884aa四虎影成人精品,99久久国产综合精品女图图等你,97在线观看永久免费视频,久久精品国产精品亚洲38,ⅵdeodesetv性欧美

（1 同濟(jì)大學(xué)土木工程防災(zāi)國(guó)家重點(diǎn)實(shí)驗(yàn)室，上海 200092； 2 同濟(jì)大學(xué)土木工程學(xué)院，上海 200092）

［摘要］以最簡(jiǎn)形式的功能函數(shù)描述平面屈曲約束支撐鋼框架在靜力荷載作用下的體系極限承載力狀態(tài)，利用對(duì)偶變數(shù)抽樣法與指數(shù)多項(xiàng)式近似概率密度法對(duì)結(jié)構(gòu)整體抗力的概率密度函數(shù)及其統(tǒng)計(jì)特征進(jìn)行了估計(jì)?？紤]兩種基本荷載組合，在對(duì)平面屈曲約束支撐鋼框架結(jié)構(gòu)整體可靠度評(píng)價(jià)的基礎(chǔ)上，給出了在一定目標(biāo)可靠度下的基于結(jié)構(gòu)體系極限承載力可靠度的實(shí)用設(shè)計(jì)公式。通過一個(gè)具體算例表明，該設(shè)計(jì)方法既比傳統(tǒng)的基于構(gòu)件可靠度的設(shè)計(jì)方法經(jīng)濟(jì)，又能保證結(jié)構(gòu)體系的可靠度。

［關(guān)鍵詞］屈曲約束支撐；鋼框架；整體可靠度；目標(biāo)可靠度；實(shí)用設(shè)計(jì)方法

中圖分類號(hào)：TU3915文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2011)08-0068-04

Integrated reliability design of planar steel frames with buckling restrained braces based on ultimate bearing capacity

Li Guoqiang^1,2, Guo Xiaokang²(1 State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China;2 College of Civil Engineering, Tongji University, Shanghai 200092, China)

Abstract:Based on the simplest performance function, the limit bearing capacity state of planar steel frames with buckling restrained braces was described under static loads. The probability density function and statistical characteristics of the system resistance were estimated by using antithetic variable sampling method and exponential polynomial approximation of probability density method. Considering two basic types of load combinations, the practical design method was proposed to achieve a target reliability index of the system resistance based on the assessment of system reliability. The proposed method was proved  to be more economical and rational than the traditional method through a design example.

Keywords:buckling restrained brace; steel frame; integrated reliability; target reliability; practical design method

作者簡(jiǎn)介：李國(guó)強(qiáng)，教授，Email：gqli@#edu.cn。

參考文獻(xiàn)

［1］LI JINJUN, LI GUOQIANG Reliability based integrated design of steel portal frames with tapered members［J］. Structural Safety, 2004,26(2):221\|239.

［2］劉玉姝.平面鋼框架結(jié)構(gòu)非線性分析及整體可靠度設(shè)計(jì)［J］. 同濟(jì)大學(xué)學(xué)報(bào), 2005,33(8):1017\|1026.

［3］寧風(fēng),包聯(lián)進(jìn),徐小華. 結(jié)構(gòu)抗震新技術(shù)在世博永久建筑工程中的應(yīng)用［J］.建筑結(jié)構(gòu)，2011,41(3):36\|39.

［4］劉晴云,閆鋒,汪大綏,等.屈曲約束支撐在磁浮虹橋站結(jié)構(gòu)設(shè)計(jì)中的應(yīng)用［J］.建筑鋼結(jié)構(gòu)進(jìn)展,2009,11(4):27\|34.

［5］劉玉姝.平面鋼框架結(jié)構(gòu)非線性分析及整體可靠度設(shè)計(jì)理論研究［D］.上海: 同濟(jì)大學(xué), 2004.

［6］李進(jìn)軍. 變截面門式鋼剛架非線性分析及整體可靠度設(shè)計(jì)理論研究［D］.上海: 同濟(jì)大學(xué)，2001.

［7］AYYUB B M, HALDAR A. Practical structural reliability techniques［J］. Journal of Structural Engineering, 1984,110(8):1701\|1724.

［8］ER G K. A method for multi-parameter PDF estimation of random variables［J］. Structural Safety, 1998,20(1):25-36.

［9］李繼華. 建筑結(jié)構(gòu)概率極限狀態(tài)設(shè)計(jì)［M］.北京:中國(guó)建筑工業(yè)出版社, 1990.