计算梁内任意点位移的特征弯矩方法  

Characteristic Bending Moment Method for Each Displacement of Beam

作　　者：刘光好[1] 

机构地区：[1]河北工业大学土建学院,天津300132

出　　处：《河北工业大学学报》2000年第2期95-97,共3页Journal of Hebei University of Technology

摘　　要：在梁弯矩图的常见分解中存在杆端位移弯矩图和结点位移弯矩图．这些弯矩图的特 征弯矩能表示杆端位移和梁内点的位移．依此性质得到了计算梁内任意点竖向位移和转角 的特征弯矩方法．其公式可分为两类：特征弯矩型公式和荷载型公式．用此方法求位移， 不需要计算积分或图乘．对常见问题相对简单．In factorizing of bending moment diagram (BMD) as usual, there is bar-end-displacement BMD and point-displacement BMD of beam. The bar-end-displacement and internal-point-displacement of beam can be explained by using characteristic bending moment (CBM) of those BMD. From above this paper discusses CBM method for deflection and rotation at each point of beam. The equation of them is including two groups of formulae. One is CBM-type. The other is loading-type. In calculation with this method it needs not to integrate or diagram multiplication. The operation is often easy for common problems.

关 键 词：位移 特征弯矩 荷载 工程力学 计算 

分 类 号：TU311.4[建筑科学—结构工程]