Staggered-Supported Steel Anchor Box System for Cable-Stayed Bridges
Publication: Journal of Bridge Engineering
Volume 27, Issue 7
Abstract
This paper presents a novel anchorage structure for stay cables to reduce the load on the concrete pylon. Called the staggered-supported steel anchor box (SS-SAB), this anchorage structure provides self-balancing of the horizontal component of the cable tension force during cable tensioning; the vertical load is transferred to the concrete pylon through a staggered support. The SS-SAB can tolerate the forces within the spatial cable plane and reduce the cracking risks of the concrete pylon. To investigate the behavior of the SS-SAB, a half-scale specimen was designed and tested. Data on the deformation, crack patterns, local strains, and slippages were obtained that demonstrate that the SS-SAB can delay crack occurrences in the concrete pylon. In a supplementary analysis, a finite-element analysis performed using the ABAQUS software suite delivered good accuracy. From the test and numerical analysis, the influence of the cable angle on load sharing within the concrete pylon was investigated. The effective scope of applications of the SS-SAB is provided.
Get full access to this article
View all available purchase options and get full access to this article.
Data Availability Statement
All data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
This study was completed under the support of the National Key Research and Development Program of China (Grant No. 2021YFB1600301) National Natural Science Foundation of China (Grant No. 52078436) and the Sichuan Science and Technology Program (Grants Nos. 2021JDTD0012 and 2022JDRC0012), and the Opening Funding Project of the Key Laboratory of Earthquake Engineering Simulation and Seismic Resilience of the China Earthquake Administration.
References
Cheng, B., J. Wang, and C. Li. 2013. “Compression behavior of perforated plates in steel tower anchorage zones of cable-stayed bridges.” J. Constr. Steel Res. 90: 72–84. https://doi.org/10.1016/j.jcsr.2013.07.020.
Cui, N., and S. Huang. 2019. “On the optimal strut-and-tie models and design approach for the cable–pylon anchorage zone.” J. Civ. Eng. Manage. 25 (6): 576–586. https://doi.org/10.3846/jcem.2019.10374.
Li, S., E. Lim, L. Shen, Y. Hong, and Q. Pu. 2021. “Strut-and-Tie model-based prestress design for the cable–pylon anchorage zone of cable-stayed bridges.” J. Bridge Eng. 26 (9): 04021069. https://doi.org/10.1061/(ASCE)BE.1943-5592.0001771.
Li, Z., Y. Liu, and J. He. 2014. “Behavior of stud connectors under combined shear and tension loads.” Eng. Struct. 81: 362–376. https://doi.org/10.1016/j.engstruct.2014.10.016.
Li, Z., C. Zhao, K. Deng, and W. Wang. 2018. “Load sharing and slip distribution in multiple holes of a perfobond rib shear connector.” J. Struct. Eng. 144 (9): 04018147. https://doi.org/10.1061/(ASCE)ST.1943-541X.0002152.
Qin, S., W. Xu, Q. Lu, Q. Zheng, Z. Fu, R. Yuan, and J. Sun. 2020. “Overall design and concept development for main navigational channel bridge of Changtai Changjiang river bridge.” [In Chinese.] Bridge Construction 50 (3): 1–10.
Shao, X., D. He, and L. Li. 2014. “Experimental research on horizontal mechanical behavior of steel anchor girder-corbel composite structure.” [In Chinese.] Chin. J. Highway Transp. 27 (4): 55–61+68.
Su, Q.-T., G.-T. Yang, F. Qin, and C. Wu. 2012. “Investigation on the horizontal mechanical behavior of steel-concrete composite cable-pylon anchorage.” J. Constr. Steel Res. 72: 267–275. https://doi.org/10.1016/j.jcsr.2012.01.004.
Xu, Z., C. Wang, R. Zhao, and X. Wang. 2011. “Full-scale model test for one box with three rooms cable-pylon anchorage zone of cable-stayed bridge.” In Proc., 3rd Int. Conf., on Transportation Engineering, 1970–1976. Reston, VA: ASCE.
Zeng, Y., K. Chen, M. Yuan, S. Chen, and S. Dai. 2012. “Study of low retracting ring prestressed anchorage structure in pylon of cable-stayed bridge.” [In Chinese.] Bridge Construction 42 (5): 21–25.
Zhang, J., W. Ding, and S. Zhu. 2015. “Analysis of steel anchor beam structural system of anchorage in pylon of Jingyue Changjiang river highway bridge.” [In Chinese.] Bridge Construction 45 (2): 89–93.
Information & Authors
Information
Published In
Copyright
© 2022 American Society of Civil Engineers.
History
Received: Dec 27, 2021
Accepted: Mar 15, 2022
Published online: May 11, 2022
Published in print: Jul 1, 2022
Discussion open until: Oct 11, 2022
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.
Cited by
- Huanwei Liang, Ke Tan, Kailai Deng, Yongming Zhang, Canhui Zhao, Tengyu Yang, Crack Resistance of Steel–Concrete Hybrid Joint between Concrete Girder and Steel–Concrete Composite Girder in Long-Span Cable-Stayed Bridge under Hogging Moment, Journal of Bridge Engineering, 10.1061/JBENF2.BEENG-5895, 28, 2, (2023).
- Haijun Xu, Yuqing Liu, Chi Lu, Analysis on the stress mechanism of the exposed steel anchor box composite cable–pylon anchorage structure, Engineering Structures, 10.1016/j.engstruct.2023.115816, 281, (115816), (2023).