多遇地震作用下板式楼梯与框架共同工作性能研究  

Research on the collaborate performance of board type stairs and frame in frequent earthquakes

作　　者：张然[1] 张新培[1] 田志鹏[2] 

机构地区：[1]四川大学建筑与环境学院,四川成都610065 [2]四川省建筑科学研究院,四川成都610081

出　　处：《四川建筑科学研究》2013年第1期150-154,共5页Sichuan Building Science

摘　　要：针对目前地震作用下板式楼梯框架地震反应研究不足的现状,本文建立了不含楼梯和含两个板式楼梯的两个5层钢筋混凝土框架模型,并进行了多遇地震作用下的弹性时程分析,讨论了板式楼梯与框架共同工作时对框架梁柱内力的影响以及楼梯各构件的地震反应,结果表明,直接与楼梯构件连接的框架梁柱的内力受到较大影响,楼梯梁、梯柱以及梯板的内力绝对值相比静力计算的值有明显增大,梯板存在较大拉压力。In this paper, two five layers of reinforced concrete frame models of excluding stair and containing two type stair are established to do the frequent earthquake effect of elastic time history analysis according to the limitation of recent researehs, then we discuss the effect of the frame force resulted from the collaborate of board type stairs and frame,including the seismic response in each part of board type stairs. The conclusion shows that the frame force changes largely in the parts directly kinking to board type stairs ,the force in the beams, pillars and boards of the stairs increases obviously comparing with their static force, pull and pressure force of the stair board become larger.

关 键 词：混凝土板式楼梯框架 多遇地震 时程分析 共同工作性能 

分 类 号：TU375.3[建筑科学—结构工程]