近场地震下弯曲剪切破坏方柱抗震性能试验与数值模拟
发布时间：2018-09-09 15:29
【摘要】：设计完成4根大比例方形截面柱试验,试件改变体积配箍率,并以不同的加载制度模拟近场地震与普通地震对结构柱抗震性能的影响。试件在试验中发生弯曲破坏与弯曲剪切破坏,模拟与计算构件的临近倒塌极限状态与有限损伤极限状态的设计限值,并与试验进行比较。试验与计算结果表明:加载制度的变化对构件的抗震性能有一定的影响;构件水平加载发生破坏后,仍能维持试验竖向荷载;满足我国设计规范的结构柱仍会发生弯曲剪切破坏,这种破坏形式导致濒临倒塌极限状态与有限损伤极限状态的设计值不保守;根据能量平衡原理计算的有限损伤极限状态的限值与弯曲剪切破坏构件的试验极限变形较为吻合。
[Abstract]:Four large scale square cross-section columns were designed and tested. The volume hoop ratio was changed and the effects of near-field earthquake and ordinary earthquake on seismic behavior of structural columns were simulated with different loading systems. Bending failure and bending shear failure occur in the test. The design limits of the near collapse limit state and the finite damage limit state of the members are simulated and calculated, and the results are compared with the test results. The results of test and calculation show that the change of loading system has a certain influence on the seismic behavior of members, and the vertical load can be maintained after the failure of horizontal loading. Bending shear failure will still occur in structural columns which meet the design requirements of our country's design code, which leads to the unconservative design values of the near collapse limit state and the finite damage limit state. The limit value of the finite damage limit calculated by the energy balance principle is in good agreement with the experimental limit deformation of the bending shear failure member.
【作者单位】： 湖南大学土木工程学院;深圳市华阳国际工程设计有限公司;
【基金】：国家自然科学基金项目(51338004,51178175)~~
【分类号】：TU352.11
本文编号：2232778
[Abstract]:Four large scale square cross-section columns were designed and tested. The volume hoop ratio was changed and the effects of near-field earthquake and ordinary earthquake on seismic behavior of structural columns were simulated with different loading systems. Bending failure and bending shear failure occur in the test. The design limits of the near collapse limit state and the finite damage limit state of the members are simulated and calculated, and the results are compared with the test results. The results of test and calculation show that the change of loading system has a certain influence on the seismic behavior of members, and the vertical load can be maintained after the failure of horizontal loading. Bending shear failure will still occur in structural columns which meet the design requirements of our country's design code, which leads to the unconservative design values of the near collapse limit state and the finite damage limit state. The limit value of the finite damage limit calculated by the energy balance principle is in good agreement with the experimental limit deformation of the bending shear failure member.
【作者单位】： 湖南大学土木工程学院;深圳市华阳国际工程设计有限公司;
【基金】：国家自然科学基金项目(51338004,51178175)~~
【分类号】：TU352.11
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