本文選題：空間兩節(jié)點(diǎn) + 懸鏈線索單元�。� 參考：《哈爾濱工程大學(xué)學(xué)報(bào)》2016年06期

【摘要】：為了分析索結(jié)構(gòu)在荷載作用下的線性和非線性反應(yīng),根據(jù)索結(jié)構(gòu)的受力特點(diǎn),提出了一種可以充分考慮索結(jié)構(gòu)非線性效應(yīng)的空間兩節(jié)點(diǎn)懸鏈線索單元。基于彈性懸鏈線的解析解,推導(dǎo)了索單元的切線剛度矩陣,通過(guò)迭代法求解了索結(jié)構(gòu)的剛度矩陣和內(nèi)力向量,利用該新型的索單元模型分析了靜、動(dòng)力荷載作用下結(jié)構(gòu)的非線性行為,對(duì)于非線性靜力分析,結(jié)構(gòu)平衡方程采用牛頓迭代法求解;對(duì)于非線性動(dòng)力時(shí)程分析,采用Newmark直接積分法和牛頓迭代法相結(jié)合的增量迭代法求解。數(shù)值分析結(jié)果驗(yàn)證了空間兩節(jié)點(diǎn)懸鏈線索單元模擬索結(jié)構(gòu)的精確性和可靠性。
[Abstract]:In order to analyze the linear and nonlinear responses of cable structures under loads, a spatial two-node catenary clue element is proposed to fully consider the nonlinear effect of cable structures according to the stress characteristics of cable structures. Based on the analytical solution of elastic catenary, the tangent stiffness matrix of cable element is derived, the stiffness matrix and internal force vector of cable structure are solved by iterative method, and the static state is analyzed by using the new cable element model. For nonlinear static analysis, the structural equilibrium equation is solved by Newton iteration method, and for nonlinear dynamic time history analysis, the nonlinear behavior of structure under dynamic load is solved by Newton iteration method. The incremental iterative method, which combines Newmark direct integration method and Newton iteration method, is used to solve the problem. The numerical results verify the accuracy and reliability of the spatial two-node catenary clue element in simulating cable structure.
【作者單位】： 東北電力大學(xué)建筑工程學(xué)院;哈爾濱工業(yè)大學(xué)土木工程學(xué)院;
【基金】：國(guó)家國(guó)際科技合作專項(xiàng)項(xiàng)目(2011DFA21460)
【分類號(hào)】：O342
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本文編號(hào)：2080102