肋板结构主梁混凝土斜拉桥相关屈曲极限承载力空间分析  

THREE DIMENSIONAL ANALYSIS FOR LOCAL-OVERALL INTERACTIVE BUCKLING LOAD OF A LARGE-SPAN CABLE-STAYED CONCRETE BRIDGE WITH BEAM-AND-SLAB DECKS

作　　者：梁硕[1] 曾庆元[2] 张起森[1] 

机构地区：[1]长沙交通学院 [2]长沙铁道学院

出　　处：《土木工程学报》2001年第5期45-51,共7页China Civil Engineering Journal

基　　金：国家自然科学基金资助项目 (批准号:594780 37)

摘　　要：混凝土斜拉桥采用肋板结构的主梁容易发生局部变形 ,其极限承载力与此有关 ,作者根据弹性力学对物体位形的分析结果 ,提出了混凝土斜拉桥肋板结构主梁局部与整体相关屈曲空间位移的计算方法 ,编制了混凝土斜拉桥局部与整体相关屈曲极限承载力的空间分析计算程序 ,在非线性连续介质力学理论和模型试验的基础上 ,结合工程实例对大跨度混凝土斜拉桥的局部与整体相关屈曲极限承载力进行分析 ,并给出了理论计算结果。The ultimate bearing capacity of a cable?stayed concrete bridge is relative to the local deformation of a main beam A method to calculate the space displacement of a large?span cable?stayed concrete bridge with beam?and?slab decks is proposed in the paper.It is based on the configuration analysis of an elastic body.Then,a program for the local?overall interactive buckling load of a cable?stayed bridge is developed .It is based on the nonlinear continuum mechanics and testing results.At last,a computing result of the engineering example is obtained.

关 键 词：混凝土 斜拉桥 极限承载力 肋板结构 空间位移 

分 类 号：U448.27[建筑科学—桥梁与隧道工程]