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賈益綱¹，蒲秀娟²

（1 南昌大學(xué)設(shè)計(jì)研究院，南昌 330047； 2 中國醫(yī)藥集團(tuán)重慶醫(yī)藥設(shè)計(jì)院，重慶 400042）

 

［摘要］采用ANSYS軟件對(duì)3個(gè)單層單跨開洞率不同的填充墻鋼筋混凝土框架水平荷載試驗(yàn)?zāi)Ｐ瓦M(jìn)行了非線性分析，由分析結(jié)果可得計(jì)算值與試驗(yàn)結(jié)果吻合良好。用同樣的模擬方法，對(duì)5個(gè)單層雙跨不同填充墻高度的鋼筋混凝土框架模型進(jìn)行了水平荷載作用下的全過程模擬分析。研究結(jié)果表明，隨著填充墻高度的增大，填充墻框架結(jié)構(gòu)側(cè)移剛度和水平承載力顯著提高，結(jié)構(gòu)延性相對(duì)降低；框架結(jié)構(gòu)開裂荷載有所提高，但框架柱原有的“強(qiáng)剪弱彎”性能可能改變，出現(xiàn)箍筋先于縱筋屈服的不利情況；框架柱上段剪力值比原純框架柱有明顯增大，各跨墻高不等時(shí)，增幅更大；按照現(xiàn)行結(jié)構(gòu)設(shè)計(jì)方法，框架柱正截面和框架梁彎、剪承載力設(shè)計(jì)是安全的，但是框架柱斜截面抗剪承載力的設(shè)計(jì)存在極大的安全隱患。

［關(guān)鍵詞］填充墻；鋼筋混凝土；框架結(jié)構(gòu)；非線性分析

中圖分類號(hào)：TU317-1文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2012)09-0094-04

 

Jia Yigang¹，Pu Xiujuan²

（1 Design & Research Institute of Nanchang University, Nanchang 330047, China;2 Sinopharm Chongqing Pharmaceutical and Medical Industry Design Institute, Chongqing 400042, China)

 

Abstract: ANSYS software was used to do nonlinear analysis towards three monolayer single span reinforced concrete frame horizontal load test models with different open hole rate, and the calculation results have good agreement with the experimental results. Then the same analogy method was used to analyze five monolayer double span rate reinforced concrete frames with different infilled wall height, and simulate the whole process under horizontal load. The results show that with the increase of infilled wall height, the infilled wall frame structure lateral stiffness and horizontal bearing capacity increase significantly, and structure ductility becomes relatively lower; Frame structure crack load increases, but the original frame column ‘strong shear weak bending’ performance may change and appear the situation that stirrup is more easily yield than longitudinal reinforcement; Shear value of upper part of frame column becomes bigger than the original pure frame column, when every height is different, the increase is more significant; According to the current structure design method, the frame column normal section and frame beams bending, shear capacity design are safe, but inclined section shear capacity design of frame column exists a great potential safety hazard.

Keywords: infilled wall; reinforced concrete; frame structure; nonlinear analysis

作者簡介：賈益綱，碩士，教授，一級(jí)注冊(cè)結(jié)構(gòu)工程師，Email: jiayigang999@sina.com。

 

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