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研究表明,中心支撑框架的横向动力响应受控于支撑构件的非弹性性能,然而,整个框架的总性能取决于框架的构造,包括连接形式。本文对低周反复荷载下,钢框架模型的滞回特性进行评估。在试验试件的设计和制造过程中考虑了这些框架的特点。对具有类似物理特征的标准中心支撑框架也进行了对比试验,两个试验试件均为管状横截面单层X-支撑系统。本文对两个系统的特性进行描述,对两个系统进行详细比较以评估强度、刚度、非弹力、变形以及能量消耗。基于试验结果,提出能够获得系统独特细节的解析模型并进行验证。
Studies have shown that the lateral dynamic response of a central support frame is governed by the inelastic behavior of the support members, however, the overall performance of the overall frame depends on the configuration of the frame, including the form of the connection. In this paper, the hysteretic characteristics of steel frame model are evaluated under low-cycle repeated load. The characteristics of these frames were taken into account in the design and manufacture of test specimens. A comparative test was also conducted on a standard center support frame with similar physical characteristics. Both test specimens were monolithic X-support systems with tubular cross-sections. This article describes the characteristics of both systems and compares the two systems in detail to assess strength, stiffness, inelasticity, deformation, and energy consumption. Based on the experimental results, an analytical model that can obtain the unique details of the system is proposed and verified.