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（1 長(zhǎng)春工程學(xué)院土木工程學(xué)院， 長(zhǎng)春 130012； 2 中元國際(長(zhǎng)春)設(shè)計(jì)研究院有限公司，  長(zhǎng)春 130012）

［摘要］采用擬靜力方法對(duì)1∶2縮尺模型框架結(jié)構(gòu)中的現(xiàn)澆鋼筋混凝土板式樓梯受力性能進(jìn)行試驗(yàn)研究，對(duì)比了常規(guī)設(shè)計(jì)與加強(qiáng)后樓梯的抗震性能，并采用有限元分析了樓梯對(duì)整體結(jié)構(gòu)的影響及樓梯在地震作用下的內(nèi)力。結(jié)果表明，梯柱、梯梁的可靠性與梯段板的拉力互相制約，梯柱、梯梁強(qiáng)則梯段板拉力大，反之亦然。常規(guī)的加強(qiáng)設(shè)計(jì)難以保證樓梯的抗震性能，框架結(jié)構(gòu)中的樓梯宜采用弱化樓梯斜梯段支撐作用的設(shè)計(jì)方法，并對(duì)樓梯結(jié)構(gòu)進(jìn)行適當(dāng)加強(qiáng)。

［關(guān)鍵詞］樓梯； 抗震性能； 試驗(yàn)研究； 框架結(jié)構(gòu)

中圖分類號(hào)：TU375文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2018)17-0072-05

Experimental study on seismic performance of the stairs in frame structure

Yuan Zhiren1, Dou Lijun1, Li Yingchao2, Wang Tan1

(1 Civil Engineering Department, Changchun Institute of Technology, Changchun 130012， China; 2 IPPR(Changchun) Engineering Design & Research Institute Co., Ltd.,   Changchun 130012， China)

Abstract:The quasi-static loading test method was used to test the mechanical behavior of cast-in place reinforced concrete slab stair in the 1/2 scale specimen. The seismic performance of a normal designed stair and a reinforced designed stair was compared. The influence of stair on whole structure and the internal force of stair under earthquake action were analyzed by finite element method. The result shows that the reliability of the ladder column and the ladder beam is independent of the tension of the ladder plate, the stronger the ladder column and beam, the larger the tensile force of ladder plate. The conventional strengthening design method is difficult to guarantee the seismic performance of the stairs. The stairs in the frame structure should adopt the design method of weakening inclined ladder plate support and strengthen the stair structure.

Keywords:stair; seismic performance; experimental research; frame structure

*吉林省科技廳社會(huì)發(fā)展重點(diǎn)項(xiàng)目資助（20090423），公共建筑疏散通道抗震技術(shù)研究（20090423）。

作者簡(jiǎn)介：袁志仁，碩士，講師，Email：yzr117@qq.com。