考虑层间滑移的多层组合梁挠度计算  

ANALYTICAL ANALYSIS FOR CALCULATING DEFLECTIONS OF MULTILAYERED COMPOSITE BEAMS WITH INTERLAYER SLIPS

作　　者：张永平 徐荣桥[1] ZHANG Yong-ping;XU Rong-qiao(Department of Civil Engineering,Zhejiang University,Hangzhou,Zhejiang 310058,China)

机构地区：[1]浙江大学土木系,杭州310058

出　　处：《工程力学》2018年第A01期22-26,共5页Engineering Mechanics

基　　金：国家自然科学基金项目(51478422)

摘　　要：目前对组合梁的研究大多集中在两层组合梁,对多层组合梁的研究甚少。该文推导了考虑各层层间滑移的多层组合梁控制方程,求解了其在均布荷载与简支边界条件下的挠度计算的解析表达式,给出了挠度放大系数公式,结合规范中的折减刚度法,可以方便地用于工程设计。Most of the researches on composite beams with interlayer slips are concentrated on two-layered composite beams, while few works have been done on multi-layered composite beams. In this paper, the gonverning equations are derived for multi-layered composite beams taking into account the slips between layers, the analytical solutions for deflection calculations under uniformly distributed load and simply supported boundary conditions are obtained, and the formula for deflection magnification factor is presented. These solutions can be utilized to engineering applications by conveniently combining with reduced stiffness method.

关 键 词：多层组合梁 层间滑移 挠度放大系数 等效抗弯刚度 折减刚度法 

分 类 号：TU31[建筑科学—结构工程]