Seismic performance analysis and design suggestion for frame buildings with cast-in-place staircases  

作　　者：Feng Yuan Wu Xiaobin Xiong Yaoqing Li Congchun Yang Wen 

机构地区：[1]China Southwest Architecture Design & Research Institute Co.,Ltd

出　　处：《Earthquake Engineering and Engineering Vibration》2013年第2期209-219,共11页地震工程与工程振动（英文刊）

基　　金：The National Key Technologies R&D Program under Grant No. 2009BAJ28B01;The Technologies R&D Program of China State Construction Engineering Co., Ltd under Grant No. CSCEC-2009-Z-15

摘　　要：Many staircases in reinforced concrete （RC） frame structures suffered severe damage during the Wenchuan earthquake. Elastic analyses for 18 RC structure models with and without staircases are conducted and compared to study the influence of the staircase on the stiffness, displacements and internal forces of the structures. To capture the yielding development and damage mechanism of frame structures, elasto-plastic analysis is carried out for one of the 18 models. Based on the features observed in the analyses, a new type of staircase design i.e., isolating them from the master structure to eliminate the effect of K-type struts, is proposed and discussed. It is concluded that the proposed method of staircase isolation is effective and feasible for engineering design, and does not significantly increase the construction cost.Many staircases in reinforced concrete （RC） frame structures suffered severe damage during the Wenchuan earthquake. Elastic analyses for 18 RC structure models with and without staircases are conducted and compared to study the influence of the staircase on the stiffness, displacements and internal forces of the structures. To capture the yielding development and damage mechanism of frame structures, elasto-plastic analysis is carried out for one of the 18 models. Based on the features observed in the analyses, a new type of staircase design i.e., isolating them from the master structure to eliminate the effect of K-type struts, is proposed and discussed. It is concluded that the proposed method of staircase isolation is effective and feasible for engineering design, and does not significantly increase the construction cost.

关 键 词：cast-in-place staircases frame structure seismic performance design suggestions 

分 类 号：TU375.4[建筑科学—结构工程] TU352.11