弯箱梁桥的内力影响面机动分析  

Kinematic method for analyzing the internal force influence surface of curved box bridge

作　　者：瞿尔仁[1] 易云琨[1] 刘孝武[1] 黄曦[1] 李添润 

机构地区：[1]合肥工业大学土木建筑工程学院,安徽合肥230009

出　　处：《合肥工业大学学报（自然科学版）》2000年第2期196-199,共4页Journal of Hefei University of Technology：Natural Science

摘　　要：该文用样条有限条法导出了弯箱梁桥的应力、应变及单元刚度矩阵，推导了求一点确定内力分量的内力影响面定理，提出了等价荷载的概念，并求出了分别相应于样条结点参数及样条结点位移的等价荷载．最后编制了程序，通过静力分析和机动分析得出的影响面进行比较，说明了这种方法的正确性．The spline finite strip method (SFSM) is used to deduce the stress,strain and unit stiffness matrixes of the curved box bridge and testify the theorem for internal force influence surface. The concept of equivalent load is given, and the equivalent load vectors coordinating with spline node parameter and spline node displacement are obtained. A program is also made to compare the internal force influence of static analysis with that of kinematic analysis, showing the validity of the method.

关 键 词：样条有限条 内力影响面 机动分析 等价荷载向量 弯箱梁桥 

分 类 号：U448.213[建筑科学—桥梁与隧道工程] U448.42[交通运输工程—道路与铁道工程]