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閤東東，苗啟松，韓龍勇，李文峰

（北京市建筑設(shè)計(jì)研究院有限公司， 北京 100045）

 

［摘要］基于ABAQUS對(duì)加固加層后的老舊砌體住宅結(jié)構(gòu)進(jìn)行了動(dòng)力時(shí)程分析研究。老舊砌體住宅采用外套預(yù)制鋼筋混凝土墻加固，并采用鋼結(jié)構(gòu)進(jìn)行隔震加層，可增加建筑面積。加固加層后的結(jié)構(gòu)是含有砌體、混凝土和鋼結(jié)構(gòu)的混合結(jié)構(gòu)，并且采用了層間隔震技術(shù)。由于結(jié)構(gòu)較復(fù)雜，對(duì)其進(jìn)行動(dòng)力時(shí)程分析具有一定的復(fù)雜性。首先，敘述了采用雙線性模型的隔震支座模擬方法，并驗(yàn)證了該方法的正確性；其次，以某工程為例，探討了老舊砌體住宅增層隔震后的結(jié)構(gòu)的分析方法。研究結(jié)果表明，加層后下部結(jié)構(gòu)的基底剪力和位移有一定削弱，加層具有一定的可行性，分析方法也可為類似結(jié)構(gòu)提供參考。

［關(guān)鍵詞］老舊砌體住宅； 層間隔震； 動(dòng)力時(shí)程分析； 抗震加固

中圖分類號(hào)：TU311.3；TU398+.9        文獻(xiàn)標(biāo)識(shí)碼：A        文章編號(hào)：1002-848X(2013)17-0113-04

 

Ge Dongdong, Miao Qisong, Han Longyong, Li Wenfeng

(Beijing Institute of Architectural Design, Beijing 100045, China)

 

Abstract: Dynamic time history analysis of the retrofitted old masonry building with additional stories was carried out by ABAQUS software. After the old masonry building is strengthened by external prefabricated reinforced concrete wall, the lightweight steel structure is added above it in cooperation with seismic isolation, then, increasing building area is brought forward by these measures. The retrofitted old masonry building with additional stories is a composite and complex structure, because it includes masonry structure, concrete structure and steel structure, and with the application of seismic isolation technology furthermore. Hence, time history analysis of the structure is complicated. A new simulation method of bilinear seismic isolation bearing is described and verified for its correctness. Then, take a project as example, analysis method of the retrofitted old masonry building with additional storey is discussed. The results show that base shear force and displacement of retrofitted old masonry building are mitigated, and feasibility of adding stories is proved to some extent. The analysis method can help engineers for the similar project.

Keywords: old brick masonry building; story isolation; dynamic time history analysis; seismic retrofit

作者簡介：閤東東，博士，高級(jí)工程師，Email：gddhust@gmail.com。

 

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