【作者】 常卫华；

【导师】 曹万林；

【作者基本信息】 北京工业大学 ， 结构工程， 2004， 硕士

【摘要】 本文对 Ｔ 形短肢剪力墙模型进行了抗震性能试验研究，对比了不同肢厚比的 Ｔ　形短肢剪力墙的抗震性能，对比了普通 Ｔ 形短肢剪力墙与带暗支撑的 Ｔ 形短肢剪力　墙的抗震性能．，进行了理论分析和抗震设计研究。　　　　　具体工作有以下几个方面：　　　　　１．对 ６ 个 １／２ 缩尺的 Ｔ 形短肢剪力墙模型进行了低周反复荷载试验研究。对　其承载力、刚度及其衰减过程、延性、耗能、滞回特性及破坏特征等进行了较深　入的分析。试验表明，带暗支撑 Ｔ 形短肢剪力墙与普通短肢剪力墙相比，可较大　幅度地改善抗震性能。　　　　　２．在试验研究的基础上，建立了刚度、承载力计算的简化力学模型与公式：　建议了恢复力模型；进行了刚度及承载力的计算，与试验结果符合较好。　　　　　３．建议了结构抗震动力分析力学模型并进行了时程分析。　　　　　４．用 ＤＲＡＩＮ 一 ２Ｄ＋程序，对底部带暗支撑 Ｔ 形短肢剪力墙以及普通 Ｔ 形短肢　剪力墙分别进行了弹塑性时程地震反应计算，分析了底部带暗支撑对结构整体地震　反应的影响。计算分析表明，底部带暗支撑的 Ｔ 形短肢剪力墙结构各层的位移均有　所比减小，层间位移分布更为均匀，有利于抗震。　　　　　５．在试验及理论分析的基础上，提出了普通 Ｔ 形短肢剪力墙和带暗支撑 Ｔ 形　短肢剪力墙的抗震设计建议。可供该类结构的抗震设计参考。更多还原

【Abstract】 In the paper, the experimental study on the seismic behavior of T shaped short pier shear walls has been presented. Seismic behavior of T-shaped short pier shear walls with different wall pier width-depth ratio has been compared between two conditions, with concealed bracings and without. Based on experimental study, theoretical analysis and seismic design methods on T shaped short pier have been given. The main contents are listed as follow: 1. The experimental research on the seismic behavior of 6 models of T-shaped short pier shear wall with 1/2 scale is presented. Based on the cyclic loading experiments, the following seismic behavior characters of the specimen have been analyzed: bearing capacity, stiffness, ductility, hysteresis capacity, energy dissipation and failure phenomena. Compared with normal T-shaped short pier shear walls, the seismic behavior of T-shaped short pier shear walls with concealed bracings have been greatly improved. 2. Based on the experimental research, the mechanism how shear wall piers work together with concealed bracing is studied., which sets the base for the establishment of the mechanical model . The simplified mechanical model and the calculative formulas of the stiffness and the bearing capacity have been established. The model of restoring force has been established. The calculating results accord well with the experimental results. 3. The model of dynamic analysis for the structure is established and the model of restoring force is proposed. 4. With the analysis of DRAIN ?2D+, the nonlinear time history seismic response analysis have been provided and compared between T-shaped short pier shear walls with bottom concealed bracings and normal ones. It has been proved that for the T shaped short pier shear walls with concealed bracings, displacement of each floor of have been obviously reduced, compared with the normal ones. With setting of the concealed bracings distribution of displacement is more uniform in the shear wall, which is advantageous for earthquake resistance. 5. Based on experimental and theoretical analysis, seismic design suggestion for T -shaped short pier shear walls with bottom concealed bracings and T shaped short pier shear walls is presented, which may provide references for seismic design.更多还原