横向配箍率对钢-混凝土组合梁抗震性能的影响

英文篇名：THE INFLUENCE OF HORIZONTAL REINFORCEMENT RATIO ON SEISMIC BEHAVIOR OF STEEL-CONCRETE BEAM
中文刊名：工业建筑
英文刊名：Industrial Construction
作者：蒋丽忠 ; 邹飞 ; 戚菁菁 ; 余志武
英文作者：Jiang Lizhong Zou Fei Qi Jingjing Yu Zhiwu(School of Civil and Architecture Engineering ; Central South University Changsha 410075)
中文关键词：钢-混凝土组合梁 ; 低周反复荷载 ; 横向箍筋 ; 抗震性能
英文关键词：composite steel-concrete beam repeated and cyclic loading horizontal reinforcement seismic behavior
出版日期：2007-08-20
机构：中南大学土木建筑学院,中南大学土木建筑学院,中南大学土木建筑学院,中南大学土木建筑学院长沙410075,长沙410075,长沙410075,长沙410075
年：2007
期：08
出版单位：工业建筑

摘要

为揭示横向配箍率对组合梁抗震性能的影响规律,对低周反复荷载作用下10榀不同横向配箍率钢-混凝土组合梁进行试验研究,对不同横向配箍率钢-混凝土组合梁的破坏形态、滞回规律、耗能能力、刚度退化规律和延性等抗震性能进行深入分析,观测和记录试验中组合梁的纵向裂缝情况,根据试验研究与分析结果,建议钢-混凝土组合梁正弯矩区横向配箍率在0.5%~0.7%,而负弯矩区的横向配箍率在0.7%~0.8%。
For researching the influence of horizontal reinforcement ratio on seismic behavior of steel-concrete beams,experiments are conducted on ten specimens of composite steel-concrete beams under the repeated and cyclic loadings.With the results of these experiments,it is analyzed that breaking appearance,hysteresis curves,ductility and other seismic behavior of steel-concrete beams and written down the time when longitudinal cracking appeared in concrete flange in tension.By researching the experimental results,it is suggested that the rational horizontal reinforcement ratio of steel-concrete beam in positive moment area should be 0.5% to 0.7% and in negative moment area be 0.7% to 0.8%.

引文

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