首页 | 本学科首页   官方微博 | 高级检索  
     

基于新型大变形平板壳单元的剪力墙模型及其在OpenSees中的应用
引用本文:王丽莎, 岑松, 解琳琳, 陆新征. 基于新型大变形平板壳单元的剪力墙模型及其在OpenSees中的应用[J]. 工程力学, 2016, 33(3): 47-54. DOI: 10.6052/j.issn.1000-4750.2015.03.0173
作者姓名:王丽莎  岑松  解琳琳  陆新征
作者单位:1.清华大学航天航空学院, 北京 100084;;2.中航工业第一飞机设计研究院, 陕西, 西安 710089;;3.清华大学土木工程系, 北京 100084
基金项目:国家科技支撑计划项目(2015BAK14B02);北京市自然科学基金项目(8142024);国家自然科学基金项目(51378299,51261120377)
摘    要:数值模拟是研究超高层建筑地震灾变行为的重要手段。地震作用下,剪力墙作为超高层结构的重要抗侧力构件往往呈现出复杂的受力状态,甚至因结构倒塌而产生大变形破坏,因此有必要开发一个能准确考虑大变形的剪力墙单元。该文基于广义协调元理论和更新Lagrangian列式,提出了一种高性能四边形平板壳单元及其几何非线性列式,并将该模型集成于开源有限元程序OpenSees中,以经典算例验证了该单元的性能和应用于大变形计算的可靠性。通过将该单元与分层壳截面结合,该文对多种类型的剪力墙构件进行了模拟,并将模拟结果与试验结果进行对比,验证了该单元能较好的模拟剪力墙的复杂受力特性,且能有效模拟钢筋混凝土构件倒塌的关键特性,为进一步开展基于OpenSees的超高层结构地震灾变行为研究提供参考。

关 键 词:平板壳元  OpenSees  剪力墙  分层壳单元  大变形
收稿时间:2015-03-09
修稿时间:2015-06-05

DEVELOPMENT OF A SHEAR WALL MODEL BASED ON A NEW FLAT SHELL ELEMENT FOR LARGE DEFORMATION SIMULATION AND APPLICATION IN OPENSEES
WANG Li-sha, CEN Song, XIE Lin-lin, LU Xin-zheng. DEVELOPMENT OF A SHEAR WALL MODEL BASED ON A NEW FLAT SHELL ELEMENT FOR LARGE DEFORMATION SIMULATION AND APPLICATION IN OPENSEES[J]. Engineering Mechanics, 2016, 33(3): 47-54. DOI: 10.6052/j.issn.1000-4750.2015.03.0173
Authors:WANG Li-sha  CEN Song  XIE Lin-lin  LU Xin-zheng
Affiliation:1.School of Aerospace Engineering, Tsinghua University, Beijing 100084, China;;2.The First Aircraft Institute of AVIC, Xi'an, Shaanxi 710089, China;;3.Department of Civil Engineering, Tsinghua University, Beijing 100084, China
Abstract:Numerical simulation is an effective method for investigating the earthquake-induced collapse mechanism of super-tall buildings. As one of the most important lateral-force resistant components, the shear walls usually exhibit complex mechanical behaviors and even fail with large deformation induced by structural collapse. Hence, a reliable numerical model which can consider large deformation is critical for the earthquake-induced collapse simulation. A high-performance quadrilateral shell element based on the theory of generalized conforming element, accounting for the geometric nonlinearity of large deformation using the updated Lagrangian formula, is herein proposed and implemented in an open-source software(i.e. OpenSees). The reliability of the element and associated algorithm for large deformation is initially validated through classic examples. Subsequently, simulation of various shear walls is conducted using the multi-layer section and the proposed shell element. Through a comparison with the experimental data, the reliability of the element is further validated in representing the complex mechanical behavior of shear walls, and the element is capable of capturing the key collapse characteristics of reinforced concrete components. The research outcome will assist in providing an effective tool for further investigation on the collapse mechanism of super-tall buildings using OpenSees.
Keywords:flat shell element  OpenSees  shear wall  multi-layer shell element  large deformation
本文献已被 CNKI 等数据库收录!
点击此处可从《工程力学》浏览原始摘要信息
点击此处可从《工程力学》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号