摘要
作为框架结构不可或缺的耗能构件,型钢混凝土(SRC)柱主要以阻尼力做功及滞回变形方式耗散地震输入能量。以SRC柱为研究对象,基于收集到的国内近年来关于低周往复荷载作用下SRC柱相关试验研究的77组实测数据,以极限耗能能力作为评价损伤的表征量,结合《混凝土结构设计规范》和《型钢混凝土结构设计规程》,给出了SRC柱极限耗能能力的确定方法,计算分析了SRC柱截面尺寸、混凝土强度及含钢率等设计参数的损伤敏感度,揭示了主要设计参数对SRC柱损伤演化的影响规律。研究成果可为建立地震激励下型钢混凝土框架结构楼层损伤模型提供理论和数据支持。
As an indispensable dissipation member in the frame structures,steel reinforcement concrete（SRC） columns dissipates the inputting seismic energy mainly by damping force working and hysteretic deformation.Taking the SRC columns as research object,ultimate energy dissipation capacity of SRC columns is used as characterization constants for damage.Based on 77 group experimental data about SRC columns under low cyclic loadings,combining with Code for design of concrete structure and Technical specification for design of SRC composite structure,calculational method for the ultimate energy dissipation capacity of SRC columns was provided and damage sensitivity of sectional dimension,concrete strength and steel ratio were analyzed,then the influence law of main design parameters on damage evolution of SRC columns was obtained.The achievements can provide theoretical support for establishing story damage model of SRC frame structures.
出处
《建筑结构》
CSCD
北大核心
2013年第6期72-76,共5页
Building Structure
基金
国家科技支撑计划(2013BAJ08B03)
长江学者和创新团队发展计划
国家自然科学基金(50978218
51108376)
高等学校博士学科点专项科研基金(20106120110003)
陕西省科研项目(2012K12-03-01
2010JK633
2011KTCQ03-05)
关键词
型钢混凝土柱
设计参数
损伤敏感度
极限耗能能力
骨架曲线
steel reinforced concrete column
design parameter
damage sensitivity analysis
ultimate energy dissipation capacity
skeleton curve
