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2 pages, 164 KiB

Open AccessEditorial

Special Issue on Advanced Technologies for Bridge Design and Construction

by Ichiro Ario, Yuki Chikahiro and Gakuho Watanabe

Appl. Sci. 2023, 13(19), 10907; https://doi.org/10.3390/app131910907 - 1 Oct 2023

Cited by 1 | Viewed by 2652

Abstract

In light of the increasing frequency of large-scale natural disasters worldwide, critical infrastructures such as bridges, which serve as vital links between cities and prefectures, are often devastated [...] Full article

(This article belongs to the Special Issue Advanced Technologies for Bridge Design and Construction)

Research

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22 pages, 23022 KiB

Open AccessArticle

Development and Application of Digital Twin–BIM Technology for Bridge Management

by Elfrido Elias Tita, Gakuho Watanabe, Peilun Shao and Kenji Arii

Appl. Sci. 2023, 13(13), 7435; https://doi.org/10.3390/app13137435 - 23 Jun 2023

Cited by 9 | Viewed by 4745

Abstract

The concept and technology of a digital twin, which represent a replica of a real object in a virtual space called Industry 4.0, are widely used across all industries and purposes. Similarly, in the architecture, engineering, and construction (AEC) industries, there is an [...] Read more.

The concept and technology of a digital twin, which represent a replica of a real object in a virtual space called Industry 4.0, are widely used across all industries and purposes. Similarly, in the architecture, engineering, and construction (AEC) industries, there is an urgent need to develop a technology called BIM, a form of digital twin based on 3D models, for the purpose of improving productivity and reducing costs. Bridge structures are required to be safe, reliable, and durable, and various research studies have been conducted on maintenance and repair strategies and their development by fusing health monitoring and digital twins. In this study, we explore the development of digital twin–BIM technology and demonstrate its various applications for an existing bridge structure where the implementation of health monitoring is planned. Moreover, we evaluate the characteristics of the structural performance of the bridge structure using digital twin–BIM technology. Full article

(This article belongs to the Special Issue Advanced Technologies for Bridge Design and Construction)

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26 pages, 13768 KiB

Open AccessArticle

Advanced Prediction for Cyclic Bending Behavior of RC Columns Based on the Idealization of Reinforcement of Bond Properties

by Peilun Shao, Gakuho Watanabe and Elfrido Elias Tita

Appl. Sci. 2023, 13(11), 6379; https://doi.org/10.3390/app13116379 - 23 May 2023

Cited by 1 | Viewed by 2786

Abstract

The bonding characteristics between steel bars and concrete in reinforced concrete (RC) structures are crucial for the prediction of load-bearing capacity for seismic design. Nevertheless, most previous studies on bond-slip performance focus on the bond strength based on the pull-out experiments, it is [...] Read more.

The bonding characteristics between steel bars and concrete in reinforced concrete (RC) structures are crucial for the prediction of load-bearing capacity for seismic design. Nevertheless, most previous studies on bond-slip performance focus on the bond strength based on the pull-out experiments, it is often overlooked that the effect on the failure modes of RC members and the deformation performance due to the bond characteristics. In this research, the effect of the diameter and its arrangement of the reinforcement of the RC column on the bond failure mode and load-bearing capacity based on the cyclic loading tests and the FE analysis are carried out. In the cyclic loading test, it was found that two RC columns with different diameters and reinforcement arrangements showed distinct load-bearing capacity, deformation performance, and failure mode. Despite those columns having the same longitudinal reinforcement ratios. In addition, by applying an advanced finite element analysis using a bond-slip model that induces splitting failure, we succeeded in reproducing the cyclic deformation behavior and local damage obtained in experiments with high accuracy. The proposed model brings in the advanced prediction of the seismic behavior of RC structures and the enhancement of seismic resistance of social infrastructure facilities to earthquake disasters. Full article

(This article belongs to the Special Issue Advanced Technologies for Bridge Design and Construction)

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16 pages, 6907 KiB

Open AccessArticle

Optimization of Construction Process and Determination of Intermediate Cable Forces for Composite Beam Cable-Stayed Bridge

by Ersen Huang, Hongjun Ke and Huanhuan Hu

Appl. Sci. 2023, 13(9), 5738; https://doi.org/10.3390/app13095738 - 6 May 2023

Cited by 4 | Viewed by 1917

Abstract

This paper presents a comprehensive study of the Xiangsizhou Bridge, a double-tower double-cable steel–concrete composite girder cable-stayed bridge located in Pingnan, Guangxi, China. A finite element model of the full-bridge spatial truss system was established using a dual main beam simulation of the [...] Read more.

This paper presents a comprehensive study of the Xiangsizhou Bridge, a double-tower double-cable steel–concrete composite girder cable-stayed bridge located in Pingnan, Guangxi, China. A finite element model of the full-bridge spatial truss system was established using a dual main beam simulation of the steel–concrete composite girder. To obtain the initial reasonable bridge state, the minimum bending energy method was employed, followed by optimization of the state using the unknown load coefficient method to attain the final reasonable completion state. This paper proposes an innovative construction scheme for the erection of the main girders, which is designed to address the issue of excessive tensile stresses in the bridge deck slabs that can arise in conventional construction schemes. This scheme can save about 4 months of construction time and shorten the construction cycle of main beam erection by 60%. Furthermore, the study derived and verified a formula for the intermediate cable force during the construction process, which demonstrated its effectiveness. This study provides practical value for the design and construction of similar bridges. Full article

(This article belongs to the Special Issue Advanced Technologies for Bridge Design and Construction)

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16 pages, 5763 KiB

Open AccessArticle

Design and Mechanical Properties of Flat Anchorage Limit Plate

by Bo Huang, Anyang Wu, Shuang Zhang, Jiawei Wang, Bing Cao, Yihan Du and Yue Zhang

Appl. Sci. 2023, 13(9), 5638; https://doi.org/10.3390/app13095638 - 3 May 2023

Cited by 1 | Viewed by 1640

Abstract

To address the safety problems caused by clips being squeezed by jacks and wire slipping in the tensioning process of flat anchorages, we designed a limit plate to be used with a flat anchorage, and we studied the mechanical properties of the anchorage [...] Read more.

To address the safety problems caused by clips being squeezed by jacks and wire slipping in the tensioning process of flat anchorages, we designed a limit plate to be used with a flat anchorage, and we studied the mechanical properties of the anchorage system after adding the limit plate through numerical simulation. Lastly, the limit plate was created and applied in a practical engineering scenario to test its safety performance. The results showed that the newly designed limit plate changed the butt position of the jack during tension, increased the hole distance, and hid the clips in the hole position of the limit plate, thus mitigating the safety hazard caused by the narrow surface tension construction in practice. The limit plate alleviated the stress concentration on the anchorage, and the extreme stress value decreased by 10–13%. Adverse effects, such as stress concentration caused by tension, were transferred to the replaceable limit plate, thus improving the reliability of the flat anchorage. The symmetrical tensioning scheme represented by sequential tensioning of holes 1, 4, 2, 5, and 3 is recommended, which produced the lowest extreme stress value of 685.55 kPa, which is 22.42 kPa lower than the maximum value of various other schemes. Full article

(This article belongs to the Special Issue Advanced Technologies for Bridge Design and Construction)

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25 pages, 5310 KiB

Open AccessArticle

Force Analysis of Circular Diaphragm Wall Based on Circular Cylindrical Shell Theory

by Lin Wang and Guojian Shao

Appl. Sci. 2023, 13(7), 4450; https://doi.org/10.3390/app13074450 - 31 Mar 2023

Cited by 6 | Viewed by 2063

Abstract

In order to make up for the shortcomings of existing theory calculation methods for circular diaphragm walls, an alternative calculation method was developed with a clear concept based on the circular cylindrical shell theory and superposition principle in elasticity and named the circular [...] Read more.

In order to make up for the shortcomings of existing theory calculation methods for circular diaphragm walls, an alternative calculation method was developed with a clear concept based on the circular cylindrical shell theory and superposition principle in elasticity and named the circular cylindrical shell theory calculation method (CCSTCM). We took the north anchorage circular foundation pit of G3 Tongling Yangtze River Highway and Railway Bridge as an example and calculated and analyzed it by the proposed CCSTCM, finite element numerical simulation method (FENSM) and site monitoring. As a result, we obtained the radial displacement, circumferential stress and vertical bending moment of the circular diaphragm wall, and then summarized their regularities. By researching the results of the CCSTCM (TCR), the results of the FENSM (NSR) and the results of the site monitoring (SMR), the following conclusions could be drawn: the numerical calculation model established was reasonable; the variation trends of the data curves of the TCR were highly similar to those of the NSR and SMR; and the TCR were slightly larger than the NSR but slightly smaller than the SMR, and closer to the SMR in general. Finally, the proposed CCSTCM was proven to be correct and applicable and could be used in similar circular diaphragm wall projects. Full article

(This article belongs to the Special Issue Advanced Technologies for Bridge Design and Construction)

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16 pages, 6846 KiB

Open AccessArticle

Algorithm and Application of Foundation Displacement Monitoring of Railway Cable Bridges Based on Satellite Observation Data

by Ying Zhu, Miao Shuang, Daqi Sun and Hui Guo

Appl. Sci. 2023, 13(5), 2868; https://doi.org/10.3390/app13052868 - 23 Feb 2023

Cited by 3 | Viewed by 1143

Abstract

In order to realize real time monitoring of foundation displacement of railway cable bridge based on satellite observation system, reasonable data sources of satellite monitoring and data analysis duration are necessary, and the influence of various errors should be eliminated in the process [...] Read more.

In order to realize real time monitoring of foundation displacement of railway cable bridge based on satellite observation system, reasonable data sources of satellite monitoring and data analysis duration are necessary, and the influence of various errors should be eliminated in the process of satellite signal acquisition. In this paper, the validity of foundation settlement monitoring of bridge tower by satellite is verified through accuracy and stability tests. For eliminating the multipath error and random noise of GNSS signal, a new method is presented by combining stationary wavelet transform and empirical mode decomposition in this study. For improving the observation accuracy of the satellite monitoring system, combing the measured data, the GNSS data are corrected by establishing non-linear mapping between the GNSS data and precise leveling data by BP neural network. Based on that, the accuracy of the presented method is verified by the foundation settlement data of a new railway cable bridge tower. Full article

(This article belongs to the Special Issue Advanced Technologies for Bridge Design and Construction)

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22 pages, 4846 KiB

Open AccessArticle

Cable Force Optimization of Cable-Stayed Bridge Based on Multiobjective Particle Swarm Optimization Algorithm with Mutation Operation and the Influence Matrix

by Lifeng Wang, Ziwang Xiao, Min Li and Ning Fu

Appl. Sci. 2023, 13(4), 2611; https://doi.org/10.3390/app13042611 - 17 Feb 2023

Cited by 10 | Viewed by 2692

Abstract

To compensate the incapability of traditional cable force adjustment methods to automatically optimize cable forces, this paper proposes Midas/Civil and MATLAB as a structure calculator and a cable force optimizer, and external memory as a data transfer. Initial solutions from conventional methods can [...] Read more.

To compensate the incapability of traditional cable force adjustment methods to automatically optimize cable forces, this paper proposes Midas/Civil and MATLAB as a structure calculator and a cable force optimizer, and external memory as a data transfer. Initial solutions from conventional methods can be optimized by internalizing the influence matrix into the multiobjective particle swarm optimization algorithm with mutation operation and constructing the mathematical model of cable force optimization, and then, a series of Pareto frontier solution sets are obtained. For the first time, fuzzy set theory is introduced for selecting Pareto presolution set for the optimization of cable-stayed bridges, to solve the final reasonable dead load state of bridges. By using this method, the peak vertical displacement of a main girder of the optimized cable-stayed bridge decreased from −11 mm to −6 mm, with a reduction of 45%. Before and after optimization, the difference of peak negative bending moment at the top of the pier was 34.8%, indicating that the main beam was more evenly stressed and the alignment was more reasonable. Full article

(This article belongs to the Special Issue Advanced Technologies for Bridge Design and Construction)

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21 pages, 2795 KiB

Open AccessArticle

Numerical Analysis of Reinforcing Effect for Scissors-Type Bridge with Strut Members

by Yuki Chikahiro and Ichiro Ario

Appl. Sci. 2022, 12(24), 12906; https://doi.org/10.3390/app122412906 - 15 Dec 2022

Cited by 1 | Viewed by 2025

Abstract

Recently, a scissor mechanism was efficiently applied in the safety engineering field as an emergency structure owing to the advantages of mobility, transformability, and re-usability. This paper focuses on the advantages of this mechanism and puts forward a deployable emergency bridge called Mobile [...] Read more.

Recently, a scissor mechanism was efficiently applied in the safety engineering field as an emergency structure owing to the advantages of mobility, transformability, and re-usability. This paper focuses on the advantages of this mechanism and puts forward a deployable emergency bridge called Mobile Bridge as a smart bridge. To deploy this bridge in an emergency situation, the structural safety, such as strength and stiffness, must be ensured through proper reinforcing methods. Several research studies concerning the reinforcing effect to scissors structures have been conducted using a cable and/or strut. However, the reinforcing situation was limited, and it is not clear where and how much reinforcement should be introduced. In this paper, we discuss the reinforcing effect of simple struts through a theoretical and numerical approach. Then, we evaluate their applicability to the Mobile Bridge based on numerical simulation. The advantage of the proposed reinforcing method is evaluated, focusing on the reduction of the bending moment which is the dominant sectional force in the scissor structure. We found the reinforcing effect has a nonlinear relationship between the stress and ratio of extension rigidity. The most effective reinforcing configuration was a double warren truss with the vertical element in a two-unit scissors-type bridge and a double warren truss without the vertical element in a three-unit scissors-type bridge. The necessary sectional area of the strut elements was more than 0.2 times that of the scissors member. These results imply that the smart bridge can enhance its performance by using proper reinforcement of the struts. Full article

(This article belongs to the Special Issue Advanced Technologies for Bridge Design and Construction)

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16 pages, 7850 KiB

Open AccessArticle

Influence Line-Based Design of Scissors-Type Bridge

by Ichiro Ario, Yuta Hama, Khongkham Chanthamanivong, Yuki Chikahiro, Akimasa Fujiwara and Haicheng Ma

Appl. Sci. 2022, 12(23), 12170; https://doi.org/10.3390/app122312170 - 28 Nov 2022

Cited by 2 | Viewed by 2198

Abstract

Globally, large-scale natural disasters are occurring more frequently due to climatic and environmental changes. In addition, the disaster risk for infrastructures, mainly bridges, has become a vulnerability issue because reinforced concrete bridge structures are being directly exposed to the natural environment. Bridge structures [...] Read more.

Globally, large-scale natural disasters are occurring more frequently due to climatic and environmental changes. In addition, the disaster risk for infrastructures, mainly bridges, has become a vulnerability issue because reinforced concrete bridge structures are being directly exposed to the natural environment. Bridge structures linking cities or prefectures are destroyed in the aftermath of natural disasters and must be rebuilt. As a post-disaster measure, rapid reconstruction of damaged bridges and the reconnection of transportation systems between impacted locations and urban areas are the main problems encountered. This study aims to solve these problems through the application of a novel concept of an emergency bridge based on origami-inspired post-buckling theory, in conjunction with previous studies investigating the optimal deployable structure of scissors-type bridges. This study applied a novel design method for scissor-type bridges that use influence line diagrams and equilibrium equations. The proposed methods can determine the size of each member appropriately while providing the minimum and maximum values of the influence line border when carrying light vehicles by analyzing variations in the live load distribution on the structure. In the case of heavy vehicles passing over a bridge, the fundamental internal axial forces and bending moments were obtained, which provided design parameters for improving the load-carrying capacity of the structure. The proposed emergency bridge has a lower theoretical stress than that of a double-Warren truss. Full article

(This article belongs to the Special Issue Advanced Technologies for Bridge Design and Construction)

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21 pages, 11094 KiB

Open AccessArticle

On-Site Manufacturing Method for Pre-Tension U-Type Pre-Stressed Concrete Girders and Analytical Performance Verification of Anchoring Blocks Used for Applying Tension Force

by Dong-Woo Seo, Sangki Park, Ki-Tae Park, Hyun-Ock Jang and Yeon-Woo Shin

Appl. Sci. 2022, 12(23), 11892; https://doi.org/10.3390/app122311892 - 22 Nov 2022

Cited by 1 | Viewed by 2188

Abstract

Development of U-type pre-stressed girders has been attempted to increase the length of I-type girders in South Korea. However, a length of 30 m or less is common because the self-weight, according to the post-tension method, is large. In this study, the pre-tension [...] Read more.

Development of U-type pre-stressed girders has been attempted to increase the length of I-type girders in South Korea. However, a length of 30 m or less is common because the self-weight, according to the post-tension method, is large. In this study, the pre-tension method was applied without limiting the post-tension method to induce a reduction in self-weight and in the materials used because of the decrease in the cross section. In addition, the authors proposed an application of an on-site pre-tensioning method using the internal reaction arm of a U-type girder. A pre-stressed concrete U-type girder bridge is composed of a concrete deck slab and a composite section. Structural performance characteristics, such as resistance and rigidity, were improved compared to those of the PSC I-type girders. Construction safety is also improved in the manufacturing and installation stages, and the elongation ratio is reduced because of the reduction in the weight of the girders. Therefore, it is possible to ensure the aesthetic landscape and economic efficiency of bridges. As a result, it is expected that efficient construction will be possible with high-quality factory-made and cast-in-place members. In this study, the pre-tension method is introduced in the field, and the analytical performance of the anchoring block used for tension is verified. Full article

(This article belongs to the Special Issue Advanced Technologies for Bridge Design and Construction)

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24 pages, 8387 KiB

Open AccessArticle

Condition Assessment and Adaptation of Bailey Bridges as a Permanent Structures

by Barasa Anthony Kusimba, Tshewang Rinzin, Yuki Banno and Koji Kinoshita

Appl. Sci. 2022, 12(22), 11673; https://doi.org/10.3390/app122211673 - 17 Nov 2022

Cited by 5 | Viewed by 7222

Abstract

The present study assessed the Bailey Bridge’s condition and investigated its adaptation as a permanent structure, targeted the Acrow Bailey Bridge in Japan. Field diagnostic loading experiments were performed under various loading conditions, such as dynamic and static loading tests. The onsite data [...] Read more.

The present study assessed the Bailey Bridge’s condition and investigated its adaptation as a permanent structure, targeted the Acrow Bailey Bridge in Japan. Field diagnostic loading experiments were performed under various loading conditions, such as dynamic and static loading tests. The onsite data were obtained using a transducer, friction strain gauge, target measurements for the image processing approach, and accelerometer. From the field measurements, the deflection and stresses of the bridge were found to operate within the linear elastic region. The bridge was then accurately modeled based on the in situ geometric configuration of the bridge, and Finite Element Analysis was performed. The model’s accuracy was validated with the onsite data under the linear elastic domain. The model was deployed to check for resistance of critical members. A nonlinear analysis based on the linear and nonlinear buckling method was performed to determine the subject bridge’s Serviceability Limit State and Ultimate Limit State. The results showed that the first out-of-plane eigenvalue buckling analysis could monolithically assess bridge members. Further, the study established digital twin models resolve for historical data through in situ modeling measurements. Therefore, the findings obtained in this study highlight the bridge’s Structural Health Condition, bearing capacity, and propose a framework for adaptation as a permanent structure. Full article

(This article belongs to the Special Issue Advanced Technologies for Bridge Design and Construction)

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22 pages, 10960 KiB

Open AccessArticle

Smoothed Particle Hydrodynamics Simulation of the Dynamic Water Pressure inside an Arch Rib of an Arch Bridge Subjected to Seismic Excitation

by Ziwan Wang, Rui Li and Xiaozhang Li

Appl. Sci. 2022, 12(20), 10626; https://doi.org/10.3390/app122010626 - 20 Oct 2022

Cited by 1 | Viewed by 1477

Abstract

The dynamic pressure exerted on an arch rib by inner water under seismic excitation was studied based on the smoothed particle hydrodynamics (SPH) numerical model. Numerical cases of different seismic excitations in both the horizontal and vertical directions and different water depths were [...] Read more.

The dynamic pressure exerted on an arch rib by inner water under seismic excitation was studied based on the smoothed particle hydrodynamics (SPH) numerical model. Numerical cases of different seismic excitations in both the horizontal and vertical directions and different water depths were carried out. The fast Fourier transform (FFT) of dynamic pressure exerted on the arch rib showed that the spike frequency is related to the water depth. The surface wave frequency of inner water is very close to the first spike frequency. The first spike frequency comes close to the second and fourth vibration frequencies when the inner water reaches the depth of 18 m and 11.3 m, respectively. This will likely lead to the resonance of the entire arch rib. By considering barely the first spike frequency, when designing a new arch bridge, the possibilities of resonance in its second and fourth modes under seismic excitation cannot be ruled out. Based on the findings of this investigation, the inner water effect should be considered during the arch bridge design stage. Full article

(This article belongs to the Special Issue Advanced Technologies for Bridge Design and Construction)

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24 pages, 7443 KiB

Open AccessArticle

Proposed New Analytical Method of Tower Load in Large-Span Arch Bridge Cable Lifting Construction

by Qian Huang, Xiaoguang Wu, Yunfei Zhang and Min Ma

Appl. Sci. 2022, 12(18), 9373; https://doi.org/10.3390/app12189373 - 19 Sep 2022

Cited by 8 | Viewed by 2447

Abstract

The cable lifting construction method is the most widely used construction method for large-span arch bridges. The correct calculation and analysis of cable lifting construction is essential to ensure the safety and linearity in the construction of arch bridges. The existing research mainly [...] Read more.

The cable lifting construction method is the most widely used construction method for large-span arch bridges. The correct calculation and analysis of cable lifting construction is essential to ensure the safety and linearity in the construction of arch bridges. The existing research mainly focuses on the construction scheme and finite element analysis of cable lifting for large-span arch bridges. There is relatively little research on calculation theory, and there is no analytical method for cable lifting construction of arch bridges. To calculate and analyze cable lifting construction more quickly and accurately, based on the deformation coordination principle and suspension cable theory, a practical calculation method is proposed to calculate the load of the tower acting by a cable system in the cable lifting construction of arch bridges. A large-span arch bridge under construction was used as a case study, and the correctness of the calculation method was verified by measuring the displacements of the tower top. A brief description of the structure, verification method, and verification process is presented. The displacement results are calculated by the numerical calculation software SAP2000, the actual measured displacement data are discussed and comparatively analyzed, and the correctness and calculation accuracy of the proposed calculation method are also evaluated. The results show that the calculation method has sufficient accuracy. The tower load calculation is mainly undertaken to prepare for the analysis of the tower mechanical properties; therefore, the calculation method is applied to towers of the case engineering, and the stability, load carrying capacity, and deformation of the tower are analyzed to verify whether its mechanical properties meet the engineering requirements. The results show that steel pipe columns of the buckle tower are prone to twisting instability. The normal stress of the tower’s part of the pressurized rod or pressurized bending rod is larger. Wind cable load calculation models and tower design-related recommendations are presented in this tower analysis. The tower load calculation method and tower mechanics analysis method in this study can provide guidance for the calculation and analysis of the cable lifting construction of large-span arch bridges. Full article

(This article belongs to the Special Issue Advanced Technologies for Bridge Design and Construction)

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17 pages, 9834 KiB

Open AccessArticle

Estimation Equation for Horizontal Load Bearing Capacity of Circular PCFST with Diaphragm

by Seiya Zenzai, Yuki Chikahiro and Shigeru Shimizu

Appl. Sci. 2022, 12(17), 8739; https://doi.org/10.3390/app12178739 - 31 Aug 2022

Cited by 1 | Viewed by 1482

Abstract

The purpose of this study is to propose a practical formula for estimating the maximum load bearing capacity of partially concrete-filled steel tubes (PCFST) without using complicated numerical analysis and estimation procedures. This study focused on four parameters (radius thickness ratio

R

, [...] Read more.

The purpose of this study is to propose a practical formula for estimating the maximum load bearing capacity of partially concrete-filled steel tubes (PCFST) without using complicated numerical analysis and estimation procedures. This study focused on four parameters (radius thickness ratio

R

, slenderness ratio

λ

, axial force ratio

n

, and concrete filling ratio

L_{c} / L

) used in numerical analysis to determine horizontal load bearing capacity and buckling position in PCFST with diaphragms under monotonic loading. Based on the results, an equation for estimating the horizontal load bearing capacity of PCFST was obtained by nonlinear regression analysis. The estimation equation that did not consider different buckling positions predicted the horizontal load bearing capacity with an error of approximately ±10% from the numerically analyzed values, but the estimation equation that took the different buckling positions into consideration could predict the horizontal bearing capacity to within a margin of error of about 5% from the numerical value by determining the buckling position in advance. Full article

(This article belongs to the Special Issue Advanced Technologies for Bridge Design and Construction)

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22 pages, 8525 KiB

Open AccessArticle

Innovative Design of Novel Main and Secondary Arch Collaborative Y-Shaped Arch Bridge and Research on Shear Lag Effect of Its Unconventional Thin-Walled Steel Box Arch Ribs

by Qian Huang, Xiaoguang Wu, Hui Wei and Qida Chen

Appl. Sci. 2022, 12(16), 8370; https://doi.org/10.3390/app12168370 - 22 Aug 2022

Cited by 8 | Viewed by 5323

Abstract

The first main and secondary collaborative Y-shaped steel box arch bridge under construction in China is a rarely seen innovative practice among bridges already built at home and abroad, which is an attractive engineering research topic in the field of advanced bridge design [...] Read more.

The first main and secondary collaborative Y-shaped steel box arch bridge under construction in China is a rarely seen innovative practice among bridges already built at home and abroad, which is an attractive engineering research topic in the field of advanced bridge design and construction, and the investigation of this bridge has made a groundbreaking contribution. The structure of unconventional thin-walled steel box arch ribs is very novel, abandoning the traditional two-dimensional arch rib structure form and adopting the new structural mode of single–double combination and joint working of main and secondary arches. However, for this innovative design, many technical difficulties including innovative design details, mechanical behavior of thin-walled structures and construction methods still need to be pioneeringly explored and thoroughly researched. In this paper, the innovative design concept of unconventional thin-walled arch ribs for spatial Y-shaped steel box arch bridges is described, and a comparative analysis with the corresponding conventional single arch rib structure is carried out. Due to the limitations of the common conventional arch bridge research methods, a combined global and local finite element method is used to analyze the static and dynamic properties of the structure, and the shear lag effect of the thin-walled steel box arch ribs is studied in a pioneering and exploratory approach. In addition, the stress distribution of the bifurcated section of the arch ribs and the configuration of the diaphragm are analyzed in detail to verify the reasonableness, advantage and applicability of the innovative design. The results show that the main and secondary arch collaboration Y-shaped steel box arch bridge has reasonable structure and superior mechanical properties and has a greater value for promotion The design concept and analysis method are worthy of use as a reference for the aesthetical and mechanical design of similar spatial Y-shaped arch bridges in the future. Full article

(This article belongs to the Special Issue Advanced Technologies for Bridge Design and Construction)

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