【摘要】：設計完成4根大比例方形截面柱試驗,試件改變體積配箍率,并以不同的加載制度模擬近場地震與普通地震對結構柱抗震性能的影響。試件在試驗中發(fā)生彎曲破壞與彎曲剪切破壞,模擬與計算構件的臨近倒塌極限狀態(tài)與有限損傷極限狀態(tài)的設計限值,并與試驗進行比較。試驗與計算結果表明:加載制度的變化對構件的抗震性能有一定的影響;構件水平加載發(fā)生破壞后,仍能維持試驗豎向荷載;滿足我國設計規(guī)范的結構柱仍會發(fā)生彎曲剪切破壞,這種破壞形式導致瀕臨倒塌極限狀態(tài)與有限損傷極限狀態(tài)的設計值不保守;根據(jù)能量平衡原理計算的有限損傷極限狀態(tài)的限值與彎曲剪切破壞構件的試驗極限變形較為吻合。
[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.
【作者單位】： 湖南大學土木工程學院;深圳市華陽國際工程設計有限公司;
【基金】：國家自然科學基金項目(51338004,51178175)~~
【分類號】：TU352.11

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