884aa四虎影成人精品,99久久国产综合精品女图图等你,97在线观看永久免费视频,久久精品国产精品亚洲38,ⅵdeodesetv性欧美

 (四川大學(xué)建筑與環(huán)境學(xué)院土木系， 成都 610065)

［摘要］系統(tǒng)地介紹了汶川地震災(zāi)區(qū)填充墻框架結(jié)構(gòu)的震害特征，分析了震害原因。研究表明，填充墻能顯著增大結(jié)構(gòu)的側(cè)向剛度和側(cè)向承載力，填充墻的強(qiáng)度越高或框架越弱，填充墻對(duì)結(jié)構(gòu)剛度和承載力的提高程度越大；填充墻在平面內(nèi)的布置不均造成局部剛度集中，導(dǎo)致地震中出現(xiàn)應(yīng)力集中或結(jié)構(gòu)整體發(fā)生扭轉(zhuǎn)；填充墻在豎向布置不連續(xù)形成軟弱層時(shí)，結(jié)構(gòu)的變形和破壞在軟弱層集中發(fā)生。當(dāng)實(shí)心磚填充墻與框架梁柱連接較強(qiáng)且框架較弱、填充墻相對(duì)較強(qiáng)時(shí)，兩者形成組合體共同承受地震作用；地震中填充墻對(duì)框架梁柱的約束作用、擠壓作用以及填充墻局部失效會(huì)改變框架梁柱的約束條件和受力狀態(tài)，形成短柱、極短柱、短梁，甚至?xí)l(fā)生某些非常規(guī)的破壞。

［關(guān)鍵詞］砌體填充墻； RC框架； 地震震害； 協(xié)同作用； 破壞機(jī)理

中圖分類號(hào)：TU352.1    文獻(xiàn)標(biāo)識(shí)碼：A    文章編號(hào)：1002-848X(2015)04-0097-05

Interaction mechanism between masonry infilled wall and bounding RC frame under earthquakes

Li Bixiong(College of Architecture and Environment， Sichuan University， Chengdu 610065， China)

Abstract:

The seismic damage characteristics of infilled wall frame structure in Wenchuan Earthquake zone were systematically introduced and the reasons were analyzed. Research shows that the infilled wall can significantly increase lateral  stiffness and lateral bearing capacity of the structure. The higher the strength of the infilled wall or weaker the frame, the higher is the development degree of structural stiffness and bearing capacity by infilled wall. The uneven arrangement of the infilled wall in plane causes the local stiffness concentration, which leads to the stress concentration or the whole structural torsion in earthquake. The discontinuous arrangement of the infilled wall in vertical plane causes weak layer, and structural  deformation and failure occurre in the weak layer. When the solid brick infilled wall and frame have strong connections and infilled wall frame is relatively stronger than frame, the two members form a combination to withstand earthquake. The constraint condition and the stress state of the beam and column of the frame can be changed by constraint, extrusion and local failure of infilled wall to form the short column, super\|short column, short beam or even some non\|conventional damage.

Keywords:masonry infilled wall； RC frame； seismic damage； interaction effect； failure mechanism

*能源工程安全與災(zāi)害力學(xué)教育部重點(diǎn)實(shí)驗(yàn)室開放基金(2013KF05)，四川大學(xué)地震災(zāi)后重建應(yīng)急研究項(xiàng)目(2013SCU190)。

作者簡(jiǎn)介：李碧雄，博士，教授， Email：libix@126.com。

參考文獻(xiàn)

［1］王旋，李碧雄，王哲，等. 汶川地震中填充墻鋼筋混凝  土框架結(jié)構(gòu)抗震性能思考［J］. 工業(yè)建筑，2009，39（1）：2529.

［2］LI BIXIONG, WANG ZHE, MOSALAM K M. Wenchuan Earthquake filed reconnaissance on reinforced concrete framed buildings with and without masonry infill walls［C］//Proceedings of 14th World Conference on Earthquake Engineering. Beijing, 2010:S31035.

［3］李碧雄，謝和平，鄧建輝，等. 汶川地震中房屋建筑震害特征及抗震設(shè)計(jì)思考［J］. 防災(zāi)減災(zāi)工程學(xué)報(bào)，2009，29（2）：224230.

［4］GNAY S, MOSALAM K M. Structural engineering reconnaissance of the April 6, 2009, Abruzzo, Italy, earthquake, and lessons learned［R］. Pacific Earthquake Engineering Research Center, PEER 2010/105, UC Berkeley, 2010.

［5］HASHEMI S A, MOSALAM K M. Seismic evaluation of reinforced concrete buildings including effects of infill masonry walls［R］. Pacific Earthquake Engineering Research Center, PEER 2007/100, UC Berkeley, 2007.

［6］MOSALAM K M, WHITE R N, AYALA G. Response of infilled frames using pseudodynamic experimentation［J］. Earthquake Engineering and Structural Dynamics, 1998, 27(6): 589608.

［7］李碧雄, 雷濤, 鄧建輝. 汶川地震中學(xué)校建筑震害研究［J］. 四川大學(xué)學(xué)報(bào)：工程科學(xué)版, 2009, 41(3): 172\|179.

［8］SCHULLER M, MEHRABI A B, NOLAND J L, et al. Performance of masonryinfilled R/C frames under inplane lateral loads: experiments［C］//Proceedings, NCEER Workshop on Seismic Response of Masonry Infills(Section Ⅰ). San Francisco, 1994: 2732.

［9］MEHRABI A B, SHING P B. Performance of masonryinfilled R/C frames under inplane lateral loads: analytical modeling［C］//Proceedings, NCEER Workshop on Seismic Response of Masonry Infills(Section Ⅰ). San Francisco, 1994: 4550.