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将自复位墙简化成刚体,研究了往复荷载作用下自复位墙的滞回性能。通过理论推导,得出往复荷载作用下自复位墙的水平力-转角滞回曲线,给出了各特征点水平力和转角及等效黏滞阻尼系数的表达式,推导了自复位墙保证自复位性能应满足的条件,并提出了自复位墙简化滞回模型。在此基础上,通过参数分析进一步研究了预应力筋及阻尼器设计参数对自复位墙滞回性能的影响。结果表明:自复位墙的转动临界荷载与墙体自重及预应力筋的初始力有关;墙体完全卸载时是否有残余变形与墙体自重、预应力筋初始力及阻尼器屈服力有关;阻尼器屈服力对自复位墙滞回性能影响最大,预应力筋初始力及弹性刚度影响相对较小,阻尼器弹性刚度及布置位置影响最小。
The self-resetting wall is simplified as a rigid body, and the hysteretic behavior of the self-resetting wall under cyclic loading is studied. Through the theoretical derivation, the horizontal force-angle hysteresis curve of self-resetting wall under reciprocating load is obtained, and the expression of horizontal force and rotation angle and equivalent viscous damping coefficient of each characteristic point is given. The self-resetting wall is guaranteed Reset performance should meet the conditions and proposed a self-resetting wall simplified hysteresis model. Based on this, the influence of design parameters of prestressing tendons and dampers on the hysteretic behavior of self-resetting walls is further studied through parametric analysis. The results show that the critical load of self-resetting wall is related to the self-weight of the wall and the initial force of the prestressing tendon. Whether the residual deformation of the wall is completely dependent on the self-weight of the wall, the initial force of the prestressing tendon and the yield strength of the damper, The yield strength of the self-resetting wall has the greatest influence on the hysteretic behavior of the self-resetting wall. The initial force and the elastic stiffness of the prestressing tendon are relatively small, and the elastic stiffness of the damper and the location of the damper have the least influence.