钢筋混凝土框架结构基于位移的抗震设计

基金项目:

国家自然科学基金资助项目(50578129);教育部博士点专项基金资助项目(20060703001)

DISPLACEMENT-BASED SEISMIC DESIGN METHOD OF RC FRAMES

1.
1. College of Civil Engineering,Xi’an University of Architecture &Technology,Xi'an 710055,China;
2.
2. Northwest Electric Power Design Institute,Xi'an 710032,China

摘要: RC框架结构基于位移的抗震设计以框架的侧移曲线为基础，将多自由度体系转化为等效单自由度体系。在等效线性化的前提下，用弹塑性位移反应谱求出结构等效周期，得到层间剪力，进行结构构件刚度和承载力设计。同时将框架结构的弹塑性层间位移转化为梁、柱构件的目标侧移角，以确定构件的配箍特征值，保证结构预期的变形能力。该方法可以很好的控制结构在不同强度水准地震作用下的性能。
- 基于位移的抗震设计 /
- 弹塑性位移反应谱 /
- 性能水准 /
- 层间位移角
Abstract: Displacement-based seismic design of RC frames is based on the displacement shape of the RC frame,and multi-degree-of-freedom system is transformed into an effective single-degree-of-freedom system.Based on equivalent linearization,equivalent period is determined by using the elastic-plastic displacement response spectra,and then the structural members are designed.At the same time,target deformability of the beams and columns are obtained by decomposing the structure's storey drift.And the expected deformability of the structure can be guaranteed by appropriate locate the ratio of stirrup.This method could effectively control the seismic performance of the structure in different intensity earthquakes.
- displacement-based seismic design /
- elastic-plastic displacement response spectra /
- performance level /
- storey drift ratios