装配式路面板受力特性及脱空时的力学分析  

Mechanical characteristics of prefabricated pavement slabs and analysis of mechanical behavior under void condition

作　　者：郑震宙 薛惠江 闫腾飞 赵永强 陈保国[3] ZHENG Zhenzhou;XUE Huijiang;YAN Tengfei;ZHAO Yongqiang;CHEN Baoguo(Shenzhen Water Engineering Construction Management Center,Shenzhen 518040,Guangdong,China;Sinohydro Bureau 7 Co.,Ltd.,Chengdu 610081,Sichuan,China;Faculty of Engineering,China University of Geosciences,Wuhan 430074,Hubei,China)

机构地区：[1]深圳市水务工程建设管理中心,广东深圳518040 [2]中国水利水电第七工程局有限公司,四川成都610081 [3]中国地质大学(武汉)工程学院,湖北武汉430074

出　　处：《工程建设》2021年第5期1-6,共6页Engineering Construction

基　　金：国家自然科学基金资助项目(51108434)。

摘　　要：装配式混凝土路面结构开裂将大大缩短其使用寿命。为研究装配式混凝土路面板在使用阶段的受力特性及在脱空条件下的力学行为特征,本文以深圳市固戍水质净化厂二期道路工程为例,结合数值模拟结果对比分析上述两种状态下的受力特性。结果表明:在正常条件、脱空条件下的混凝土路面板受力特性均未达到开裂值;脱空条件下的混凝土路面板较正常条件下的Von-Mises应力值大;脱空条件下的路面板虽未到开裂极限,但其受力情况整体大于正常条件,结合时间效应考虑,路面板将加速开裂和破坏。The cracking of prefabricated concrete pavement structure will greatly shorten its service life.In order to study the mechanical characteristics of prefabricated pavement slabs in service stage and mechanical behavior characteristics under void condition, the mechanical characteristics under the above two conditions are compared and analyzed, combined with numerical simulation results, by taking the road engineering of Shenzhen Gushu Water Purification Plant Phase Ⅱ as an example.The results show that: Under normal condition and void condition, the stress characteristics of concrete pavement slabs do not reach the cracking value.The Von-Mises stress of concrete pavement slabs under void condition is larger than that under normal condition.Although the pavement slabs under void condition do not reach the cracking limit, the overall stress condition is greater than that under normal condition.Considering the time effect, the cracking and destruction of pavement panels will accelerate.

关 键 词：装配式路面板 受力特性 路面脱空 Von-Mises应力 数值模拟 

分 类 号：U418.6[交通运输工程—道路与铁道工程]