Deeply Incised Valley Environment Large-Section Continuous Beam Cantilever Construction Technology and Application

DOI

10.2991/978-94-6463-847-9_19How to use a DOI?

Keywords

Deeply incised valley; Continuous beam bridge; Cantilever construction; Corbel-type bracket; Intelligent grouting

Abstract

This paper addresses the technical challenges in the cantilever construction of large-section prestressed concrete continuous beams in deeply incised valley environments. Taking the Shoupanyan Bridge as the engineering background, the corbel-type bracket construction technology, intelligent circulating grouting technology, cantilever casting construction technology, and closure construction key technology are systematically studied. The Shoupanyan Bridge has a main span of 115m and a total bridge length of 258m, adopting a (65 + 115 + 65)m prestressed concrete continuous beam structure. The research shows that the maximum combined stress of the corbel-type triangular bracket support system is 123MPa, meeting the strength requirements. The grouting compactness of the intelligent circulating grouting process reaches over 95%. The safety factor of the diamond-shaped form traveler system is above 1.3. The closure segment construction adopts counterweight balance technology, and the closure accuracy is controlled within 15mm. The research results provide technical support for the construction of large-span continuous beam bridges in deeply incised valley environments and have important reference value for similar projects.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Yan Cheng
AU  - Gang Peng
AU  - Xue Wang
PY  - 2025
DA  - 2025/09/23
TI  - Deeply Incised Valley Environment Large-Section Continuous Beam Cantilever Construction Technology and Application
BT  - Proceedings of the 2025 6th International Conference on Urban Construction and Management Engineering (ICUCME 2025)
PB  - Atlantis Press
SP  - 169
EP  - 177
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-847-9_19
DO  - 10.2991/978-94-6463-847-9_19
ID  - Cheng2025
ER  -