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(1 中國(guó)建筑設(shè)計(jì)研究院有限公司， 北京 100044；2 北京工業(yè)大學(xué)工程抗震與結(jié)構(gòu)診治北京市重點(diǎn)實(shí)驗(yàn)室， 北京 100124)

［摘要］無(wú)梁樓蓋結(jié)構(gòu)體系的板柱節(jié)點(diǎn)易發(fā)生脆性沖剪破壞，進(jìn)而導(dǎo)致整體結(jié)構(gòu)的連續(xù)倒塌。近年來(lái)我國(guó)地下室無(wú)梁樓蓋系統(tǒng)連續(xù)倒塌事故多次發(fā)生，引發(fā)了工程界的廣泛關(guān)注。針對(duì)上述情況，匯總了無(wú)梁樓蓋結(jié)構(gòu)的典型事故，分析存在的共性問(wèn)題。總結(jié)了無(wú)梁樓蓋板柱節(jié)點(diǎn)研究的主要成果，包括節(jié)點(diǎn)性能試驗(yàn)、節(jié)點(diǎn)加強(qiáng)措施和子結(jié)構(gòu)抗連續(xù)倒塌試驗(yàn)以及規(guī)范抗剪強(qiáng)度計(jì)算方法。討論了實(shí)際工程設(shè)計(jì)中常見(jiàn)的問(wèn)題，并提出了建議，可為相關(guān)科學(xué)研究和工程實(shí)踐提供參考。

［關(guān)鍵詞］地下室無(wú)梁樓蓋； 連續(xù)倒塌； 事故調(diào)查； 研究綜述； 設(shè)計(jì)方法

中圖分類(lèi)號(hào)：TU375-2文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2020)14-0001-09

Design thinking on anti-collapse of beamless floor of the basement

SUN Hailin1, YANG Youzhe2, LI Yi2, SUN Qingtang1

(1 China Architecture Design & Research Group, Beijing 100044, China; 2 Beijing Key Laboratory of Earthquake Engineering and Structural Retrofit, Beijing University of Technology, Beijing 100124, China)

Abstract:The slab-column joints of the beamless floor structure system are prone to brittle punch-shear failure, which leads to the continuous collapse of the overall structure. In recent years, the continuous collapse of the beamless floor system in the basement of our country has occurred many times, which causes widespread concern in the engineering community. In view of the above situation, the typical accidents of the beamless floor structure were summarized, and the common problems were analyzed. The main results of the research on slab-column joints of the beamless floor were summarized, including performance test of joint, strengthening measures of joint and anti-continuous collapse test of sub-structure, and shear strength calculation method in the code. The common problems in actual engineering design were discussed, and suggestions were put forward, which can provide reference for related scientific research and engineering practice.

Keywords:beamless floor of the basement； continuous collapse； incident investigation； literature review； design method

作者簡(jiǎn)介：孫海林，博士，教授級(jí)高級(jí)工程師，副總工程師，Email:sunhailin@cadg.cn。