大跨度斜拉橋的施工非線性倒拆分析5P.pdf

大跨度斜拉橋的施工非線性倒拆分析

以斜拉橋靜載彎曲能量作為目標(biāo)函數(shù)，綜合考慮斜拉索垂度效應(yīng)、梁柱效應(yīng)和大位移效應(yīng)，并采用混
合法求解系統(tǒng)方程，確定斜拉索成橋時(shí)的初始張拉力。
以由此確定的斜拉橋初始狀態(tài)作為施工非線性倒拆分析
的初始狀態(tài)，倒拆分析的過程中需要考慮相應(yīng)階段的混凝土收縮、徐變影響，倒拆分析的結(jié)果作為斜拉橋施工
階段的斜拉索張拉力，即斜拉橋施工階段的最終優(yōu)化結(jié)果。
該方法經(jīng)過算例驗(yàn)證，取得了較好的結(jié)果，為斜拉
橋的施工控制提供了依據(jù)。

Static bending energy to bridge the objective function, considering the effect of cable sag, beam effect and the large displacement effects, and using mixed
 The legal system of equations to solve to determine the initial cable-stayed bridge into a tensile force. Stayed in this initial state as determined by the construction of nonlinear REVERSE
 The initial state of the process of demolition down to consider the appropriate stage of concrete shrinkage, creep, split down the analysis results as a cable-stayed bridge construction
 Phase of the cable tensile force, the bridge construction phase of the final optimization results. After a numerical example of this method and achieved good results, for the cable-stayed
 Bridge construction control provided.