發(fā)布時(shí)間：2018-09-09 15:29

【摘要】：設(shè)計(jì)完成4根大比例方形截面柱試驗(yàn),試件改變體積配箍率,并以不同的加載制度模擬近場(chǎng)地震與普通地震對(duì)結(jié)構(gòu)柱抗震性能的影響。試件在試驗(yàn)中發(fā)生彎曲破壞與彎曲剪切破壞,模擬與計(jì)算構(gòu)件的臨近倒塌極限狀態(tài)與有限損傷極限狀態(tài)的設(shè)計(jì)限值,并與試驗(yàn)進(jìn)行比較。試驗(yàn)與計(jì)算結(jié)果表明:加載制度的變化對(duì)構(gòu)件的抗震性能有一定的影響;構(gòu)件水平加載發(fā)生破壞后,仍能維持試驗(yàn)豎向荷載;滿足我國(guó)設(shè)計(jì)規(guī)范的結(jié)構(gòu)柱仍會(huì)發(fā)生彎曲剪切破壞,這種破壞形式導(dǎo)致瀕臨倒塌極限狀態(tài)與有限損傷極限狀態(tài)的設(shè)計(jì)值不保守;根據(jù)能量平衡原理計(jì)算的有限損傷極限狀態(tài)的限值與彎曲剪切破壞構(gòu)件的試驗(yàn)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(xué)土木工程學(xué)院;深圳市華陽(yáng)國(guó)際工程設(shè)計(jì)有限公司;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(51338004,51178175)~~
【分類號(hào)】：TU352.11

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