- 摘 要
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(1 西安建筑科技大學土木工程學院,西安 710055; 2 長安大學建筑工程學院,西安 710061;3 同濟大學建筑工程系,上海 200092)
[摘要]以江蘇省某工程為背景,采用ABAQUS軟件建立了三種實體模型進行模態(tài)分析,考察了帶地下室的高層框架-剪力墻結(jié)構(gòu)在不同邊界約束條件下的自振周期與振型。比較分析表明,地下室回填土對此結(jié)構(gòu)的自振周期影響很小,可以忽略;而是否將地下室頂板作為嵌固端則對自振周期影響很大。將分析結(jié)果與幾種經(jīng)驗公式進行的比較表明,確定帶地下室框架-剪力墻結(jié)構(gòu)的自振周期時,考慮地下室與上部結(jié)構(gòu)共同工作是比較符
合實際的。
[關(guān)鍵詞]框架-剪力墻結(jié)構(gòu);自振周期;對比分析
Comparison analysis of natural vibration period of frame-shear wall structure under different constraint conditions
Sun Xianghong1,2, Chen Jianbing3(1 School of Civil Engineering, Xi’an University of Architecture & Technology, Xi’an 710055, China; 2 College of Civil Engineering, Changan University, Xi’an 710061, China; 3 Department of Civil Engineering, Tongji University, Shanghai 200092, China)
Abstract:Based on a project in Jiangsu province, three different models are established respectively by using ABAQUS software. Modal analysis is carried out. Natural vibration period and oscillation mode of the high-rise frame-shear wall structure with basement under different constraint conditions are compared. The analytical results indicate that backfilled soil has little effect on natural vibration period of the present structure. However, whether taking the top-floor of the basement as the fixed-end of the superstructure or not has considerable effect on natural vibration period. In addition, analytical results are compared with several empirical formulas. It is shown that considering basement-superstructure interaction for determination of natural vibration period of frame-shear wall structure with basement is in accord with actual condition.
Keywords:frame-shear wall structure; natural vibration period; comparison analysis
國家自然科學基金創(chuàng)新研究群體科學基金項目(50621062)。
作者簡介:孫香紅,博士研究生,副教授,Email:xianghongsun@163.com。
參考文獻
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