摘要
为研究PVC管的抗震性能,依据日本学者对PVC管所做的场地沉陷下的试验布局,建立了场地沉陷下PVC管的三维有限元模型。模拟结果显示,在50cm的沉陷位移作用下,沉陷区的接口发生了转动破坏;在沉陷区与非沉陷区的过渡区域,PVC管体进入了塑性。由管体壳单元、接口单元和土弹簧单元组成的有限元模型,能比较真实地给出管体和接口的变形。试验与数值模拟结果均表明,PVC管的抗震性能较弱。
In order to study the seismic performance of polyvinyl chloride （PVC） pipelines, a 3D finite element model of PVC pipelines subjected to subsidence was established. The finite element model is built on the experi- ment, which is designed by Japanese scholars. As the FEM simulation shows, when the settlement displacement is up to 50cm, large rotation failure of joint in the subsidence zone is found. In addition, plastic deformation of pipe body is produced in the transition area of non - settlement and settlement. The finite element model, consisting of shell element, joint element and soil spring element, can present the deformation of pipe body and joint more actu- ally. Both the experiment and numerical simulation come to the conclusion that the seismic performance of PVC pipelines is weaker.
出处
《世界地震工程》
CSCD
北大核心
2016年第3期101-105,共5页
World Earthquake Engineering
基金
地震行业专项(201308018)
国家自然科学基金(51078335)
河北省地震科技星火计划项目(DZ201504177011)
关键词
PVC管
场地沉陷
抗震试验
数值模拟
PVC pipe
site subsidence
aseismatic test
numerical simulation
