往复荷载作用下自复位墙受力机理研究

该文以自复位墙作为研究对象，将其简化成一刚体，分别仅考虑自重、考虑预应力筋影响及同时考虑预应力筋和阻尼器的影响，通过理论推导得出了往复荷载作用下的水平力-转角曲线，研究了其在往复荷载作用下的受力机理。研究表明：自复位墙墙体自重和预应力筋共同提供自复位能力，阻尼器提供耗能能力；自复位墙的力学性能与墙体几何尺寸、预应力筋及阻尼器参数有关。

STUDY ON THE MECHANICAL BEHAVIOR OF SELF-CENTERING WALL UNDER CYCLIC LOADING

The self-centering wall is simplified as a rigid body, while the horizontal load vs. rotation curve of the self-centering wall subjected to cyclic loading is obtained by theoretical derivation. Three cases are taken into account to investigate the mechanical behavior of the self-centering wall, i.e. only considering the self-weight of the self-centering wall, considering the effect of prestressed tendons, and considering both the influence of prestressed tendons and dampers. The study presented in this paper indicates that for the self-centering wall, the prestressed tendons provide the self-centering ability along with the gravity of the wall, while the dampers can dissipate energy. In addition, the mechanical performance of the self-centering wall depends on the dimensions of wall, the design parameters of prestressed tendons and dampers.