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夏 堅1'2, 楊 偉2'3, 張 偉2'3, 宋漢東2'3, 高峰2,3
(1 福州大學土木工程學院,福州 350108;2 福建省建筑科學研究院,福州 350025;3 福建省綠色建筑技術重點實驗室,福州 350025)[摘要] 提出了鋼筋混凝土框架結構直接基于地震損傷性能的抗震設計方法,改變已有研究采用的損傷驗算思路。根據(jù)提出的地震損傷性能目標,將薄弱層的損傷指標作為結構整體損傷的控制指標,并結合Pushover分析方法從而進行結構直接基于損傷性能的抗震設計。給出的算例演示了鋼筋混凝土框架結構直接基于損傷性能設計的全過程,研究表明直接基于損傷性能的抗震設計結果能夠滿足建筑抗震設計規(guī)范的基本要求。因此,本文提出的直接基于損傷性能設計方法是方便可行的,并使損傷指標在設計過程中真正起到控制作用。
[關鍵詞] 損傷指標;性能設計;推覆分析;框架結構
中圖分類號:P315.9 文獻標識碼:A 文章編號:1002-848X(2012) Sl-0210-05Direct damage-based seismic design method for RC frame structures
Xia Jian1,2, Yang Wei2,3, Zhang Wei2,3, Song Handong2,3, Gao Feng2,3
(1 School of Civil Engineering, Fuzhou University, Fuzhou 350108, China; 2 Fujian Academy of Building Research, Fuzhou 350025, China; 3 Fujian Provincial Key Laboratory of Green Building Technology, Fuzhou 350025, China)Abstract: Direct damage-based seisnuc design( DDSD) method is presented for RC frame structures. The former adopted idea of checking damage level is changed by this idea. The weak floor damage index is recognized as the whole damage controlindex. According to the specified damage performance level, DDSD method is carried out by combing pushover analysis method. The offered example demonstrates the whole design progress of DDSD method. The results show DDSD method can meet the demand of building design code spontaneously. Therefore, the presented DDSD method is convenient and feasible. The seisnuc design is actually controlled by damage index when nuuung DDSD.
Keywords: damage index; performance-based seismic design; pushover analysis; frame structures