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辛力，王敏，曾凡生，應(yīng)向陽(yáng)

（中國(guó)建筑西北設(shè)計(jì)研究院有限公司， 西安 710018）

 

［摘要］《建筑抗震設(shè)計(jì)規(guī)范》（GB 50011—2010）中介紹了實(shí)現(xiàn)結(jié)構(gòu)抗震性能設(shè)計(jì)目標(biāo)的參考方法，但目前受制于設(shè)計(jì)手段，實(shí)施起來(lái)面臨較大困難。中銀大廈采用的是框剪+鋼桁架連體結(jié)構(gòu)，設(shè)計(jì)中主體結(jié)構(gòu)選用性能目標(biāo)D，連體部分的連接支座選用性能目標(biāo)C，連體結(jié)構(gòu)選用性能目標(biāo)B。通過(guò)理論推導(dǎo)，對(duì)規(guī)范所給的參考方法進(jìn)行簡(jiǎn)化，推導(dǎo)出結(jié)構(gòu)各性能目標(biāo)相對(duì)于常規(guī)設(shè)計(jì)時(shí)的地震影響系數(shù)，通過(guò)修改地震影響系數(shù)值，實(shí)現(xiàn)不同性能目標(biāo)結(jié)構(gòu)的抗震設(shè)計(jì)。另外，高性能目標(biāo)(C，B)時(shí)，針對(duì)個(gè)別次要構(gòu)件少量超筋而程序難以調(diào)節(jié)，適當(dāng)降低了構(gòu)件的承載力需求，通過(guò)降低承載力而提高變形能力的方法保證其耗能能力相同，實(shí)現(xiàn)結(jié)構(gòu)的整體性能設(shè)計(jì)。彈塑性時(shí)程分析結(jié)果表明，建議的方法簡(jiǎn)單有效、可靠度高，可為復(fù)雜高層建筑結(jié)構(gòu)基于性能的抗震設(shè)計(jì)方法提供參考。

［關(guān)鍵詞］連體結(jié)構(gòu); 基于性能的抗震設(shè)計(jì); 性能目標(biāo); 變形能力; 彈塑性時(shí)程分析

中圖分類(lèi)號(hào)：TU973.3+1      文獻(xiàn)標(biāo)識(shí)碼：A      文章編號(hào)：1002-848X(2013)09-0047-05

 

Research on performance-based seismic design method of Bank of China Building in Shaanxi

Xin Li, Wang Min, Zeng Fansheng, Ying Xiangyang

（China Northwest Building Design & Research Institute Co., Ltd., Xi′an 710018, China)

 

Abstract: The performance-based seismic design method is introduced in the Code for seismic design of building(GB 50011-2010), but it is difficult to implement under current calculation means. Towers linked with connective structures is used in the Bank of China Building, the performance objective of the main body is D, the bearing of the connective structures is C, and the connective structure is B. Based on the theoretical derivation, the amplification factor of base shear in each performance objective was deduced, and the method proposed by current code was simplified. In performance objective C and B, higher deformation capacity and lower bear capacity are designed for some element which is over reinforced, in order to ensure its energy dissipation capacity. Elastic-plastic time history analysis was used to evaluation the structural performance. The result proves the proposed method is effective. It provides a valuable thought to performance-based seismic design for the high-rise buildings.

Keywords: towers linked with connective structure; performance-based seismic design; performance objective; deformation capacity; elastic-plastic time history analysis

作者簡(jiǎn)介：辛力，博士，高級(jí)工程師，一級(jí)注冊(cè)結(jié)構(gòu)工程師，Email:xinli1129@sina.com。

 

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