Experimental Study on Bending Performance of Steel-concrete Composite Section of Long-span Continuous Beam Bridge

被引：0
|
作者：
Huai C. [1 ]
Yang J. [1 ]
Luo J. [2 ]
Wang J. [1 ]
机构：
[1] Yellow River Engineering Consulting Co. ，Ltd, Zhengzhou
[2] School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou
来源：
Hunan Daxue Xuebao/Journal of Hunan University Natural Sciences | 2022年 / 49卷 / 11期
关键词：
flexural performance; force transmission mechanism; load-bearing capacity; long span continuous girder bridge; steel concrete joint section; ultra high performance concrete;
D O I：
10.16339/j.cnki.hdxbzkb.2022127
中图分类号：
学科分类号：
摘要：
In order to explore the stress characteristics of the steel-concrete joint section，an experimental model of the steel-concrete joint section of the main beam with a scale ratio of 1∶3（long × wide × height：6.0 m × 1.722 m × 2.0 m），and the four point bending negative moment bending test was carried out，and the stress condition and force transfer mechanism of the steel-concrete joint section under different load conditions were analyzed and compared，Based on the model test，ABAQUS is used to analyze the steel-concrete joint section. The research results show that under normal loading and over loading conditions，the stress level of each component in the steel-concrete joint section is low，the joint section has strong safety reserves，the bearing capacity of the joint section meets the design requirements，and the common stress performance between the steel box and the concrete is good. The bending moment borne by the steel top plate，bottom plate and UHPC layer of the steel-concrete joint section gradually decreases during the transmission from the steel beam transition section through the pressure bearing plate to the steel-concrete joint section，and the force transmission is smooth. The steel-concrete joint section of the test model is mainly loaded by the bearing plate，and the load sharing proportion is reasonable. © 2022 Hunan University. All rights reserved.
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页码：161 / 169
页数：8
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