温度作用下连续刚构桥力学性能仿真分析  

SIMULATION ANALYSIS OF MECHANICAL PERFORMANCE OF CONTINUOUS RIGID FRAME BRIDGE UNDER TEMPERATURE ACTION

作　　者：盛超[1] 陶祥令[1] 崔蓬勃 SHENG Chao;TAO Xiangling;CUI Pengbo(Jiangsu vocational Institute of Architectural Technology,Jiangsu Xuzhou 221116,China;Shijiazhuang Tie dao University,Shijiazhuang 050043,China)

机构地区：[1]江苏建筑职业技术学院,江苏徐州221116 [2]石家庄铁道大学,石家庄050043

出　　处：《低温建筑技术》2021年第8期54-56,61,共4页Low Temperature Architecture Technology

基　　金：江苏建筑职业技术学院科研课题,“桥梁自重及温度效应仿真分析研究项目”(JYA319-02)。

摘　　要：为获得连续刚构桥在升降温作用下的性能,温度变化会使得连续刚构桥产生温度应力和温度变形。文中以某连续刚构桥为例,进行了该连续刚构桥整体升温模式和整体降温模式的二维温度效应仿真分析,求得该桥整体升温和整体降温模式下的温度变形,结果表明在整体升温降温作用下,中跨跨径为90m的预应力混凝土连续刚构桥中跨最大温度变形可以达到23.69mm,所以在桥梁设计时,可以用二维仿真分析求得桥梁温度效应,为完善连续刚构桥设计提供参考。Temperature change will cause temperature stress and deformation of continuous rigid frame bridge.In order to get the performance of continuous rigid frame bridge under the action of temperature increasing and decreasing,the two-dimensional temperature effect of the integral heating mode and the integral cooling mode of the continuous rigid frame bridge is simulated and analyzed,and the temperature deformation of the bridge under the integral heating and the integral cooling mode is obtained in this paper.The results show that the maximum temperature deformation of the middle span of the 90-meter-long prestressed concrete continuous rigid frame bridge can reach 23.69 mm under the effect of the whole temperature rising and cooling.Therefore,the temperature effect of the bridge can be obtained by two-dimensional simulation analysis in the bridge design,which provides a reference for improving the design of continuous rigid frame bridge.

关 键 词：连续刚构桥 温度变形 二维仿真分析 

分 类 号：TU311.41[建筑科学—结构工程]