大跨交叉網(wǎng)架拱結(jié)構(gòu)的穩(wěn)定性分析
羅堯治 曹立嶺 沈雁彬 馬政綱 張小明
- 摘 要
-
羅堯治 曹立嶺 沈雁彬 馬政綱 (浙江大學(xué)空間結(jié)構(gòu)研究中心 杭州 310027)張小明 (廣東順德建筑設(shè)計院 528300)
[提要] 結(jié)合實際工程介紹了螺栓球鋼管拱結(jié)構(gòu)的應(yīng)用,并采用有限元非線性分析理論對人跨度交叉網(wǎng)架拱結(jié)構(gòu)穩(wěn)定性進行全過程跟蹤分析,討論了交叉網(wǎng)架拱在橫向與豎向荷載不『司比例作用下的穩(wěn)定性能。最后,得出具有實際應(yīng)用價值的結(jié)論。
[關(guān)鍵詞] 網(wǎng)架拱結(jié)構(gòu) 整體穩(wěn)定性 幾何非線性分析
The crosscd-arch latticcd truss has large span,small cross width and wcak out-plane stiffncss. It's ncccssary to tcst the stability as wcll as analyze the strcngth of the arch structurcs. The nonlincar finite clcmcnt analysis of largc-span crosscd-arch latticcd truss is studicd,and a thorough invcstigation on the corresponding stability is taken undcr the influcnce of diffcrcnt proportional cocfficicnts of the x-dircction load to rhe z-dircction load. Finally the practically applicable conclusions arc achicvcd.
Keywords: crosscd-arch latticcd structurcs; g!obal stability; nonlincar finite clcmcnt analysis