林楷奇, 解琳琳, 陆新征, 卢啸. 基于开源计算程序的特大跨斜拉桥地震灾变及倒塌分析[J]. 工程力学, 2016, 33(1): 72-80. DOI: 10.6052/j.issn.1000-4750.2014.06.0541
引用本文: 林楷奇, 解琳琳, 陆新征, 卢啸. 基于开源计算程序的特大跨斜拉桥地震灾变及倒塌分析[J]. 工程力学, 2016, 33(1): 72-80. DOI: 10.6052/j.issn.1000-4750.2014.06.0541
LIN Kai-qi, XIE Lin-lin, LU Xin-zheng, LU Xiao. EARTHQUAKE-INDUCED COLLAPSE SIMULATION OF A SUPER LONG SPAN CABLE-STAYED BRIDGE BASED ON AN OPEN SOURCE FE PROGRAM[J]. Engineering Mechanics, 2016, 33(1): 72-80. DOI: 10.6052/j.issn.1000-4750.2014.06.0541
Citation: LIN Kai-qi, XIE Lin-lin, LU Xin-zheng, LU Xiao. EARTHQUAKE-INDUCED COLLAPSE SIMULATION OF A SUPER LONG SPAN CABLE-STAYED BRIDGE BASED ON AN OPEN SOURCE FE PROGRAM[J]. Engineering Mechanics, 2016, 33(1): 72-80. DOI: 10.6052/j.issn.1000-4750.2014.06.0541

基于开源计算程序的特大跨斜拉桥地震灾变及倒塌分析

EARTHQUAKE-INDUCED COLLAPSE SIMULATION OF A SUPER LONG SPAN CABLE-STAYED BRIDGE BASED ON AN OPEN SOURCE FE PROGRAM

  • 摘要: 现阶段大跨桥梁弹塑性分析多基于商用有限元软件,一定程度上的限制了相关研究的深入开展。该文基于开源有限元程序OpenSees,以我国拟建的琼州海峡大桥斜拉桥设计方案为例,采用分层壳单元模拟桥墩(桥面板),桁架单元模拟预应力斜拉索,建立了主跨1500 m 的特大跨斜拉桥有限元模型,实现了其地震灾变及倒塌全过程的模拟,并通过与商用有限元软件MSC.Marc 计算结果的比较,验证了该文开发的计算单元和模型的可行性与正确性。其研究成果可为进一步开展基于开源有限元程序的特大跨斜拉桥抗震研究提供参考。

     

    Abstract: Currently, most elasto-plastic analyses of long span bridges are conducted using commercial finite element software, which, to some extent, limits the in-depth investigation on associated topics. Based on the open source FE software package (i.e., OpenSees), a numerical model, integrating multi-layer shell elements for decks/piers and truss elements for prestressed cables, is herein proposed to simulate the behavior of a super long span cable-stayed bridge with a maximum span of 1500m (i.e., Qiongzhou Strait Bridge). The seismic performance of this Bridge is evaluated and compared with the results of commercial program MSC.Marc to validate the feasibility and accuracy of the elements and the finite element model. Furthermore, the collapse simulation of the bridge is successfully performed and the corresponding collapse mechanism is revealed. The research's outcome could provide a reference for further studies on seismic performance of super long span cable-stayed bridges based on open source FE programs.

     

/

返回文章
返回