**4. Conclusions**

A theoretical derivation was performed, aiming to determine the appropriate area of prestressed steel strands per unit length, and a prototype test was conducted to verify the rationality of the derivation in this study. The following conclusions can be drawn:


**Author Contributions:** Conceptualization, T.D., S.X. and L.Z.; Methodology, T.D., L.Z., and B.C.; Software, T.D. and L.Z.; Writing—original draft preparation, L.Z.; Writing—review and editing, B.C., X.L., and M.L.; Funding acquisition, J.Y. and Q.Z.

**Funding:** This research was supported by the Beijing South-to-North Water Transfer Line Management Office (GXGLC-JSZX -2017-CG01), the National Natural Science Foundation of China (Grant No. 5097911), the Beijing Municipal Science and Technology Commission (Z141100006014058), and the China Institute of Water Resources and Hydropower Research (SM0145B632017).

**Acknowledgments:** The authors would like to thank the anonymous reviewers for their constructive suggestions to improve the quality of the paper.

**Conflicts of Interest:** The authors declare no conflict of interest.
