Static Performance and Stability of a Multi-Span Hybrid Continuous Rigid Frame Bridge with High Piers

Authors

HUANG Yu, School of Civil Engineering , Changsha University of Science & Technology , Changsha , Hunan 410114 , China ;China First Highway Engineering Co ., Ltd., Lishui , Zhejiang 323000 , ChinaFollow
LIU Guanyu, School of Civil Engineering , Changsha University of Science & Technology , Changsha , Hunan 410114 , China
YI Jianbo, China First Highway Engineering Co ., Ltd., Lishui , Zhejiang 323000 , China
XING Xuan, China First Highway Engineering Co ., Ltd., Lishui , Zhejiang 323000 , China
SU Miao, School of Civil Engineering , Changsha University of Science & Technology , Changsha , Hunan 410114 , China
PENG Hui, School of Civil Engineering , Changsha University of Science & Technology , Changsha , Hunan 410114 , China

Abstract

In order to study the static performance and stability of a steel-concrete composite continuous rigid frame bridge in Suichang,Zhejiang Province,a single girder and girder lattice finite element model for the whole bridge was established by using Midas Civil,and a local solid finite element model was established by using Ansys.A detailed analysis of the structural displacement and stress state of the bridge in use and the local stress in the solid section of the pier and girder under different loads was carried out.The influence of the pile-bottom restraint stiffness and pier-girder connection form on the overall stability of the bridge was discussed,and the overall stability of the structure under wind and live loads was investigated.The results show that the girder lattice model can better simulate the real stress state of the bridge.Under the action of live load,the overall mechanical performance of the bridge and the overall stability of the bridge structure can meet the requirements of the code.The maximum deflection of the structure is 23.8 mm;the maximum tensile stress of the main girder is 45.5 MPa at the middle of the first span,and the maximum compressive stress is −46.5 MPa at the sixth pier.Under the combined action of loads in the use stage,the maximum deflection of the structure is 106.7 mm;the maximum tensile stress of the main girder is 160 MPa,and the maximum compressive stress is -205 MPa.Increasing the pile-bottom restraint stiffness is conducive to improving the overall stability of the bridge,and pier-girder consolidation is more conducive to bridge stability than bearing connections.

Publication Date

2-22-2025

DOI

10.14048/j.issn.1671-2579.2025.01.020

First Page

166

Last Page

173

Submission Date

March 2025

Recommended Citation

Yu, HUANG; Guanyu, LIU; Jianbo, YI; Xuan, XING; Miao, SU; and Hui, PENG (2025) "Static Performance and Stability of a Multi-Span Hybrid Continuous Rigid Frame Bridge with High Piers," Journal of China & Foreign Highway: Vol. 45: Iss. 1, Article 20.
DOI: 10.14048/j.issn.1671-2579.2025.01.020
Available at: https://zwgl1980.csust.edu.cn/journal/vol45/iss1/20

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