双钢管耗能支撑理论计算与滞回曲线分析  

Theoretical Calculation and Hysteresis Curve Analysis on Double Steel Pipe Energy Dissipation Brace

作　　者：周鹏 范存新[1] 姜锦磊 金远洪 Zhou Peng;Fan Cunxin;Jiang Jinlei;Jin Yuanhong(Department of Civil Engineering,Suzhou University of Science and Technology,215011,China)

机构地区：[1]苏州科技大学土木工程学院,215011

出　　处：《特种结构》2018年第4期13-21,共9页Special Structures

基　　金：国家自然科学基金(51078247)

摘　　要：结合钢结构稳定理论,研究保证双钢管耗能支撑稳定工作性能的问题,给出双钢管耗能支撑的构成要求。对双钢管耗能支撑的整体屈曲、内核单元的高阶屈曲,连接段的破坏和支撑内芯与约束之间的间隙理论值进行了理论分析和推导,提出了相应的计算公式,并结合有限元软件ABAQUS,根据推导出的条件,建立所设计的双钢管耗能模型和没有外围约束的内芯合并的普通支撑模型。依据在相同位移荷载下计算出来的滞回曲线分析双钢管耗能支撑设计的合理性。研究表明:通过理论分析给出的双钢管耗能支撑稳定工作的条件,能够提供较大的抗侧刚度,设计的双钢管耗能支撑耗能效果好,适合工程使用。The structure requirements of double steel tube energy dissipation brace were given based on the stability theory of steel structures and studied points of that secure the stable performance of the brace. The the- oretical clearance value of overall yield of double steel tube energy dissipation brace, high-order buckling of core unit, failure of the connecting section, and values between inner core support and restraint were analyzed, and the corresponding formula was proposed. The double steel brace model and ordinary brace model for integrated core structure without external constraints was established with the assistance of finite element software ABAQUS on the basis of the derived conditions. According to the hysteresis curve calculated under the same load, the validity of the design of the energy dissipation bracing of the double steel pipe was analyzed. The research shows that the condition of stable operation of double steel tube energy dissipation braces can provide the larger lateral rigidity, and the energy consumption of double steel tube energy dissipation braces ensures excellent perform- ance, which is suitable for the engineering application.

关 键 词：双钢管耗能支撑 稳定性 抗侧刚度 滞回曲线 

分 类 号：TU392.3[建筑科学—结构工程]