钢骨-钢管混凝土柱恢复力模型  

Studies on Restoring Force Model of Circular Steel Tube Composite Column Filled with Steel Reinforced Concrete

作　　者：徐亚丰[1] 赵敬义[2] 李宁[3] 卢小一 

机构地区：[1]沈阳建筑大学土木工程学院,辽宁沈阳110168 [2]中国航天建筑设计研究院济南分院,山东济南250012 [3]沈阳市房地产开发建设管理办公室,辽宁沈阳110013 [4]浙江城建建设集团有限公司,浙江杭州310007

出　　处：《沈阳建筑大学学报（自然科学版）》2009年第3期482-485,共4页Journal of Shenyang Jianzhu University：Natural Science

基　　金：辽宁省教育厅科研计划项目(20060691);沈阳市人才资源开放专项基金项目(2007140303002);沈阳建筑大学省级重点试验室开放基金项目(JG-200602)

摘　　要：目的建立能够反映结构或构件动力特性重要参数的恢复力模型,研究钢骨-钢管混凝土柱的抗震性能.方法通过设置不同的试验参数,对5个钢骨-钢管混凝土柱进行了低周反复荷载作用下受力性能的试验研究,并分析了试件的破坏形态.考虑了含骨率和轴压比对构件延性、耗能和强度、刚度退化等的影响,建立了折线型钢骨-钢管混凝土柱的恢复力模型.结果得到不同轴压比和不同含骨率下的荷载-位移滞回曲线,含骨率和轴压比对钢骨-钢管混凝土柱有着明显的影响,随着含钢率的增加,构件的变形能力得到了提高,而轴压比越大,构件的变形能力越差.结论钢骨-钢管混凝土柱多折线恢复力模型的建立为钢骨-钢管混凝土柱的弹塑性时程分析提供了参考.In order to investigate seismic performance of circular steel tube composite columns filled with steel reinforced concrete and obtain the force restoration model which can reflect the important parameters of structure and member, the different test parameters have been designed and five circular steel tube composite columns filled with steel reinforced concrete under horizontal low-cyclic loading are tested, and the destroy form has been analysed. Based on the test results and analysis, force restoration model of the columns is established with consideration of the degree of ductility, capacity of energy dissipation, deterioration of stiffness by the steel ratio and axial compression ratio. Under different axial compression ratios and steel ratios, the looping curves are carried out. The axial compression ratio and steel ratio have an obvious influence on the circular steel tube composite columns filled with steel reinforced concrete. Along with the increase of steel ratio, the deformation ability will be raised, but with the increase of axial compression ratio, the deformation ability will be worse. These conclusions offer reference for elasto-plastic time-history analysis of these columns.

关 键 词：钢骨 钢管混凝土柱 恢复力模型 抗震性能 

分 类 号：TU398[建筑科学—结构工程]