某石质牌楼受撞击后主体结构应力水平分析  

Analysing on Stress State of Main Structure of a Stone Chinese-Style Arches After Bump

作　　者：刘可[1,2] 姚菲[3] 

机构地区：[1]江苏省建筑科学研究院有限公司 [2]江苏省建筑工程质量检测中心有限公司,南京210028 [3]河海大学土木与交通学院,南京210098

出　　处：《工程质量》2014年第2期39-41,共3页Construction Quality

基　　金：江苏省"企业博士聚集计划"2011年度立项资助;江苏省科技计划项目"城市轨道交通和共同管廊建设关键测试技术研究"(JS2011JH24);南京市建设系统科研项目计划"地铁隧道注浆质量冲击法检测技术研究"(201210)

摘　　要：某石质牌楼的雀替受到车辆撞击破坏并脱落,需要对其主体结构撞击后的应力水平进行分析。本文通过试验确定了牌楼石材材料特性,建立了牌楼结构的三维实体有限元模型。对实体结构进行了动力特性检测,将结构基频实测结果与模型模拟结果进行了对比,校核了有限元模型的精度。分析了牌楼雀替受撞击后达到石材抗拉强度极限值时,牌楼主体结构的应力状态。分析结果表明,牌楼主体结构在雀替撞击破坏的情况下,未达到石材抗拉强度极限值。The sparrow brace of the stone chinese-style arches was break down after vehicle hit. It need to analysis the stress state of the main structure after bump. The characteristic of material of stone arches was determined by the test, and the finite element model was established. The dynamic property of the structure was tested. Compared the result of natural frequency with the result of model simulation, aceuracy of the finite element model was checked. The stress state of the main structure was analyzed while the limit tensile stress of the stone was an＇ived after the sparrow brace of stone arches bump. The results shows that, the limit tensile stress of the stone didn＇t reached after the sparrow brace of the main structure broken.

关 键 词：有限元模型 基频测试 数值模拟校核 应力分析 

分 类 号：U441.3[建筑科学—桥梁与隧道工程]