梁格法在异型曲线箱梁桥的计算分析与应用  

Calculation Analysis and Application of Beam Grillage Process in Special-shaped Curve Box Beam Bridge

作　　者：李连强[1] 黄思勇[1] 于西尧[1] 

机构地区：[1]天津市政工程设计研究院,天津市300457

出　　处：《城市道桥与防洪》2008年第7期49-52,共4页Urban Roads Bridges & Flood Control

摘　　要：该文比较了桥梁空间内力的分析方法,介绍了梁格法理论,从梁格划分及截面特性计算需考虑的因素、箱梁扭转常数的计算、预应力效应、影响面加载与活载内力计算等方面进行了论述,并且通过实例分析,验证梁格法在异型曲线箱梁桥的计算与应用。The article compares the analysis methods of the bridge space internal force,introduces the theory of the beam grillage process,carries out the discussion from the aspects of the factors to be considered for the division of the beam grillage and the calculation of the sectional characteristic,the calculation of torsion constant IT of the box beam,the effect of pre-stress,the loading of influence surface and the internal force calculation of live load,and verifies the calculation and application of the beam grillage process in the special-shaped curve box beam bridge by the analysis of the practical example.

关 键 词：梁格法 扭转常数 影响面 异型曲线箱梁桥 

分 类 号：U448.213[建筑科学—桥梁与隧道工程]