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(1 中國(guó)航空規(guī)劃建設(shè)發(fā)展有限公司，北京 100120； 2 北京工業(yè)大學(xué)，北京 100124)
［摘要］對(duì)于平面張弦梁結(jié)構(gòu)設(shè)計(jì)，結(jié)構(gòu)體系撐桿平面外穩(wěn)定是結(jié)構(gòu)設(shè)計(jì)的關(guān)鍵因素。以遷安文化會(huì)展中心平面張弦梁結(jié)構(gòu)為分析實(shí)例，通過改變上弦梁與撐桿的連接方式及不同的預(yù)應(yīng)力度、撐桿抗彎剛度、次梁抗彎剛度，建立仿真計(jì)算模型?？紤]結(jié)構(gòu)初始幾何缺陷，對(duì)此類結(jié)構(gòu)的穩(wěn)定問題進(jìn)行分析，得出了撐桿約束條件、預(yù)應(yīng)力度對(duì)平面張弦梁結(jié)構(gòu)整體穩(wěn)定性能的影響規(guī)律。進(jìn)一步提出基于結(jié)構(gòu)體系穩(wěn)定安全的節(jié)點(diǎn)力學(xué)性能化設(shè)計(jì)方法，對(duì)于直梁式平面張弦梁結(jié)構(gòu)設(shè)計(jì)具有一定的指導(dǎo)意義。
［關(guān)鍵詞］平面張弦梁；平面外穩(wěn)定；撐桿連接節(jié)點(diǎn)；預(yù)應(yīng)力度；撐桿抗彎剛度；次梁抗彎剛度；節(jié)點(diǎn)分析
Analysis and research on the stability performance of plane beam string structure
Wang Shu1, Ge Jiaqi1, Li Jian2(1 China Aviation Planning and Construction Development Co., Ltd., Beijing 100120,China；2 Beijing University of Technology, Beijing 100124, China)
Abstract:For plane beam string structure, structure system bar-s out-plane stability is the key factor for design. Base on the plane beam string structure of Qianan Culture Exhibit Center, considering structural initial geometric imperfection the stability performance of plane beam string structure is analyzed while the joint of stay bar, prestress ratio change. The effect rules of bar restriction condition, prestress ratio is obtained on overall stability of plane beam string structure. The join construction and mechanics performance design method are put forward for the structure.  The conclusion can provide reference for other similar structural projects.
Keywords:plane beam string structure; out-plane stability; joint connection mode;  stay bar; prestress ratio; stiffness
作者簡(jiǎn)介：王樹(1972-)，男，高級(jí)工程師，一級(jí)注冊(cè)結(jié)構(gòu)工程師，Email:nwj1973@163.com。
參考文獻(xiàn)
［1］JGJ61—2003 網(wǎng)殼結(jié)構(gòu)技術(shù)規(guī)程［S］.
［2］葛家琪,王樹,張玲，等.鋼管桁架結(jié)構(gòu)大間隙焊縫相貫節(jié)點(diǎn)性能試驗(yàn)與理論研究［J］.建筑結(jié)構(gòu),2008，38(12):18-22.