填料模拟对空腹式无铰拱温度效应的影响分析  

Analysis on Impact of Packing Simulation on Temperature Effect of Open Spandrel Hingeless Arch Bridge

作　　者：谷世君 吴正新[2] 颉保平 程生平 GU Shijun;WU Zhengxin;XIE Baoping;CHENG Shengping(不详)

机构地区：[1]中国市政工程西北设计研究院有限公司,甘肃兰州730000 [2]中交第四航务工程勘察设计院有限公司,广东广州510230

出　　处：《城市道桥与防洪》2021年第1期181-183,M0017,共4页Urban Roads Bridges & Flood Control

摘　　要：采用有限元软件Midas建立拱圈模型(M1)和拱圈-拱上结构联合作用模型(M2),对空腹式无铰拱桥进行仿真模拟,引入联合作用系数K,对比分析2种结构状态下主拱的温度响应。分析结果显示:拱上填料约束了拱桥的变形,改善了应力分布,提高了拱圈的稳定性;温度工况下,拱圈-拱上结构的联合作用效应显著。The finite element software of MIDAS is used to establish the arch ring model(M1)and the joint action model(M2)of arch ring-and spandrel structure.The open spandrel hingeless arch bridge is simulated.The joint action coefficient K is introduced to compare and analyze the temperature response of the main arch under two structural states.The analysis results show that the spandrel packing can restrain the deformation of the arch bridge,improve the stress distribution and enhance the stability of the arch ring.Under the temperature condition,the combined effect of the arch ring-the spandrel structure is significant.

关 键 词：空腹式拱桥 联合作用系数 温度效应 数值计算 

分 类 号：U441.5[建筑科学—桥梁与隧道工程]