钢筋混凝土带暗支撑剪力墙抗震机理研究

In this report, the RC shear wall with concealed bracings was proposed and granted a patent to by State Intellectual Property Office of P.R.China. Two series of experimental studies were performed: the first was experimental research on seismic behavior of twenty-six (1/3 scale) shear walls with concealed bracings subjected to cycle loading, which differ in aspect ratio, concealed bracing type, obliquity and steel ratio, and the second was shaking table tests of two (1/8 scale) shearwall structures, including one general shearwall structure and one shearwall structure with concealed bracings. Firstly, based on these tests, the stiffness, load-carrying capacity, ductility, hysteresis property, energy dissipation, failure mechanism and failure mode of the various types of shear wall with concealed bracings were systemically analyzed, with the emphasis on the aseimic mechanism, and the finite element analysis of some specimens were carried out. Secondly, the mechanics models and formulas for calculating the load-carrying capacity of the shear walls with concealed bracings were established, at the same time, the resilience models of the shear walls with concealed bracings were also established. Finally, the seismic design method of shear wall with concealed bracings was suggested and put into engineering application. The conclusions are that the seismic behavior of the shear wall with concealed bracings is improved in a great deal, compared with the general shear wall. Moreover, the engineering applications show that the shear wall with concealed bracings is able to be constructed more easily, and its prospect in the future is promising.

钢筋砼带支撑剪力墙，是申请者提出并已获国家专利的一种新型抗震耗能剪力墙。典型试验研究表明，它与同等条件下的普通剪力墙承载能力提高百分之二十，耗能能力提高百分之三十。本项目通过抗震试验及非线性有限元分析，对该新型剪力墙的抗震机理进行深入研究，建立符合其特征的力学计算模型，提供其合理的抗震设计理论与方法并用于工程。