剪力墙非线性分析单元MFBFE的理论及开发

发布时间：2018-03-14 18:21

本文选题：剪力墙单元　切入点：截面剪切变形　出处：《工程力学》2014年07期 　论文类型：期刊论文

【摘要】：纤维单元以其单元自身的优点被广泛使用于梁柱构件的非线性分析中,对于剪力墙构件,由于纤维单元采用平截面假定,忽略单元的截面剪切变形,会造成很大的误差。该文对基于力插值的纤维单元进行修正,将其引入到剪力墙构件的分析中,介绍了考虑截面剪切变形的修正基于力插值纤维单元(MFBFE)和材料单轴本构的形成,给出单元在OpenSees平台上的开发过程,特别是迭代过程中的非线性分析算法和OpenSees框架下单元和材料本构的实现方式。通过实例分析对MFBFE的应用效果进行检验,得到了两组6片剪力墙的水平低周往复模拟数据,与试验结果对比,可以认为试件模拟结果中各项抗震性能指标均与试验值相接近,单元分析精度较高。
[Abstract]:Nonlinear analysis of advantages of fiber unit with its own unit is widely used in beams and columns, the shear wall components, because the fiber unit uses the plane section assumption, the shear deformation of the unit is ignored, will cause great error. The fiber element force based on interpolation correction is introduced to the analysis of shear the wall member, introduces the interpolation unit based on fiber considering shear deformation correction section (MFBFE) formation and uniaxial constitutive materials, process development unit is given on the OpenSees platform, especially the implementation of the constitutive iterative process of nonlinear analysis and algorithm under the framework of OpenSees unit and material by an example. Analysis of the application effect of the MFBFE test, obtained two groups of 6 pieces of shear wall cyclic simulation data, compared with the test results, the specimen can be considered anti simulation results The seismic performance indexes are all close to the test value, and the precision of the unit analysis is high.

【作者单位】：中国地震局工程力学研究所中国地震局地震工程与工程振动重点实验室;
【基金】：中国地震局工程力学研究所中央级公益性研究所基本科研业务费专项项目(2013B05) 国家科技支撑计划项目(2012BAK15B02)
【分类号】：TU352.11

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