系杆拱桥主拱肋钢混结合段模型试验研究  

MODEL EXPERIMENT STUDY OF STEEL-CONCRETE COMBINED SEGMENT OF MAIN ARCH RIB OF TIED ARCH BRIDGE

作　　者：李小飞 Li Xiao-fei

机构地区：[1]中铁二十四局集团西南建设有限公司,成都610000

出　　处：《建筑技术开发》2025年第3期114-116,共3页Building Technology Development

基　　金：中国铁建股份有限公司研发项目(15-C80)。

摘　　要：系杆拱桥拱肋钢-混结合段受力复杂,其设计缺少相应的规范指导。基于鹰潭市余信贵大桥主桥项目,按1∶5模型比例进行结合段节点试验。采用等效原则设计材料、几何及受力,通过分级荷载测试其应力应变状态,并进行有限元分析对比。结果显示,试验与数值分析相符,验证了结果的正确性,为以后同类型结构设计、施工及相关研究提供了参考。The mechanical behavior of the steel-concrete joint section of the arch ribs in tied-arch bridges is complex,and there is a lack of corresponding specification guidance for its design.Based on the main bridge project of YuxinguìBridge in Yingtan city,a node test of the joint section was carried out at a 1∶5 model scale.The materials,geometry,and forces were designed following the equivalent principle,and the stress and strain states were tested through graded loads and compared through finite element analysis.The results show that the test is consistent with the numerical analysis,verifying the correctness of the results and providing references for the design,construction,and related research of the same type of structures in the future.

关 键 词：系杆拱桥 钢混结合段 节点模型试验 静力试验 有限元分析 

分 类 号：U448.225[建筑科学—桥梁与隧道工程]