部分柱顶滑移钢筋混凝土框剪结构模型试验研究

发布时间：2019-02-25 13:59

【摘要】：开展了部分柱顶滑移钢筋混凝土框剪结构模型(模型B)与传统框剪结构模型(模型A)的地震模拟振动台对比试验,两模型均为三层两跨两开间,平面布置相同,几何相似比1∶10,第二层为结构薄弱层。此外,还进行了摩擦支座的力学性能试验,确定了支座摩擦系数的取值范围。研究发现:1)无润滑油时聚四氟乙烯+不锈钢镜面板摩擦支座的摩擦系数均值约0.070~0.095,有润滑油时该类摩擦支座的摩擦系数均值约0.014~0.018;2)不同峰值地震波作用下,模型B的薄弱层层间最大位移角、最大顶点相对位移、薄弱层最大绝对加速度和顶层最大绝对加速度分别比模型A降低20%~43%、17%~32%、12%~22%和7%~33%;3)模型B各层的最大层间剪力均不同程度小于模型A。因此,部分柱顶滑移钢筋混凝土框剪结构具有比传统框剪结构更优的抗震性能。
[Abstract]:The seismic simulation shaking table tests of partial column top slip reinforced concrete frame shear structure model (model B) and traditional frame shear structure model (model A) are carried out. The two models are both three-story, two-span and two-bay, and the plane layout is the same. The geometric similarity ratio is 1: 10, and the second layer is the structural weak layer. In addition, the mechanical properties of the friction bearing were tested, and the range of friction coefficient was determined. It is found that: 1) the average friction coefficient of the friction bearing of PTFE stainless steel mirror plate without lubricating oil is about 0.070 脳 0.095, and the average friction coefficient of this kind of friction bearing with lubricating oil is about 0.014 脳 0.018; 2) under the action of different peak seismic waves, the maximum displacement angle, the maximum vertex relative displacement, the maximum absolute acceleration of the weak layer and the maximum absolute acceleration of the top layer of model B are 20% and 43% lower than those of model A, respectively, and 17% of the relative displacement, 17% of the relative displacement of the vertices, and 17% of the absolute acceleration of the top layer. There are 22% and 7%. 3) the maximum interlaminar shear force of each layer of model B is smaller than that of model A. Therefore, partial column top slip reinforced concrete frame shear structure has better seismic performance than traditional frame shear structure.
【作者单位】：华南理工大学亚热带建筑科学国家重点实验室;广东省建筑科学研究院;广州大学工程抗震中心;
【基金】：国家基金重大研究计划培育项目(90815012) 国家杰出青年科学基金项目(51025829) 亚热带建筑科学国家重点实验室重点研究项目(2009ZA04)
【分类号】：TU398.2

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