Development of precast prestressed concrete structures with damage controlling capability usingy energy dissipaters at the interface between members

在预制混凝土构件之间的界面处放置消能装置，以利用界面处的间隙开口。间隙开口通常被认为是预制预应力混凝土结构的缺点，但损伤控制系统利用了这一特点。采用波纹板作为耗能减震装置，利用预应力混凝土预制结构体系的自定心特性，使结构在地震作用下的反应位移和地震作用后的残余位移最小。波纹剪力板具有较大的剪切刚度和可忽略的轴向刚度，因此，易于优化其尺寸和位置在结构体系中。剪力板作为中间柱放置在梁之间。试验结果和分析模型表明，剪力板能有效地耗散地震能量，但不会抑制预制预应力混凝土结构的自定心功能，提出了一种利用能力设计谱预测多层建筑结构地震反应的简单方法。该方法考虑了系统的简化过程、MAP分析方法以及等效单自由度系统的高次模态效应和多重阻尼效应，提出了后张拉连接体系，使预制混凝土构件可以重复使用。对预应力混凝土构件和结构的抗剪承载力、可拆卸性和可重复使用性进行了试验研究，提出了预应力混凝土构件和结构的残余位移预测公式。该方程是基于平衡和塑性铰长度。预应力筋的作用也明确地表达在方程中。

Energy dissipating devices were placed at the interface between precast concrete members to take advantage of gap openings at the interfaces. Gap openings are ordinarily considered to be disadvantage of precast prestressed concrete structures but the damage control system utilizes this characteristics. The proposed precast prestressed structural system can minimize the response displacement during the seismic event and the residual displacement after that due to the self-centering characteristics of the system.A corrugated shear panel was used as an energy dissipating devices. The corrugated shear panel has large shear stiffness and negligible axial stiffness, and hence, it is easy to optimize its size and location in the structural system. The shear panels are placed between beams as intermediate columns. The experimental results and analytical model demonstrated that the shear panels efficiently dissipate seismic energy but does not inhibit the self-centering function of the precast prestressed concrete structures.A simple procedure was proposed to predict the seismic response of multistory building structures using capacity design spectra. The procedure considers the procedure to simplify the system, MAP analytical procedure, and the higher mode effects and multiple damping effects in a equivalent single degree of freedom system.A post-tenstioned connection system was proposed so that the precast concrete members can be reused in the future. Experiment was conducted to quantify the shear capacity, disassembling capability, and the reusability.An equation to predict the residual displacement was proposed for the prestressed concrete members and structures. The equation is based on the equilibrium and the plastic hinge length. The effect of prestressing tendons are also explicitly expressed in the equation.