Experimental Research on Seismic Performance of Prefabricated Concrete Shear Walls with Prefabricated Concrete Infill Walls
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摘要: 为研究考虑预制填充墙影响的装配式剪力墙结构的抗震性能,设计并制作了一栋两层带预制填充墙装配式剪力墙结构的1∶3缩尺试件,分别考虑在模型平面的两个主轴方向布置预制填充墙的情况下,选取三组地震波和八个地震加速度峰值水准,通过振动台试验得到了在不同等级地震波下的预制填充墙对动力特性、损伤形态、加速度响应、位移响应及试件的应变响应等特性。试验结果表明:1)在八度设防和八度罕遇地震激励作用下,模型损伤严重,最终破坏形式为一层剪力墙下端混凝土剥落并形成较多水平通缝。2)在六和七度设防地震作用时,模型基本处于弹性状态,预制填充墙的存在加大了墙体的抗侧刚度,减少了墙体地震加速度反应;在八度多遇和七度罕遇地震工况作用时,试件逐步进入弹塑性阶段,预制填充墙慢慢失去作用。3)低于八度罕遇地震时,预制填充墙对剪力墙结构的抗侧刚度具有明显的增大效应;八度罕遇地震等级,模型损伤严重,预制填充墙基本失去了作用。Abstract: In order to study seismic performance of prefabricated concrete shear walls with prefabricated concrete infill walls, a model of 1∶3 scale with two-story prefabricated concrete shear walls and prefabricated concrete infill walls was designed and fabricated. Considering the models with prefabricated concrete infill walls along the two principal axis directions of the structural plane respectively, three sets of seismic waves and eight seismic acceleration peak levels, the dynamic characteristics, damage modes, acceleration responses, displacement responses and strain responses of models excited by different levels of seismic waves were obtained by shaking table tests. The results showed that: 1) excited by fortification earthquakes and rare earthquakes of 8 degrees, the model was severely damaged, and the final failure mode of the model was that concrete at the bottom of the first-floor shear wall peeled off and formed many horizontal through cracks. 2) The model was basically in the elastic state excited by 6-degree earthquakes and fortification earthquakes of 7 degrees. The existence of the prefabricated concrete infill walls increased the lateral stiffness of shear walls and reduced seismic acceleration responses of shear walls. Subjected to the frequent earthquakes of 8 degrees and the rare earquakes of 7 degrees, the elastic-plastic deformation occurred in models gradually, and the effect of prefabricated concrete infill wall gradually decayed. 3) under rare earthquakes below 8 degrees, prefabricated concrete infill walls were of a significant effect increasing lateral stiffness of shear walls; under rare earthquakes of 8 degrees,the model damaged severely, and prefabricated concrete infill walls did not play a basic role.
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[1] 焦安亮,张鹏,李永辉,等.环筋扣合锚接连接预制剪力墙抗震性能试验研究[J].建筑结构学报, 2015(5):103-109. [2] 中华人民共和国住房和城乡建设部.高层建筑混凝土结构技术规程:JGJ 3-2010[S].北京:中国建筑工业出版社,2010. [3] 王激扬,楼文娟,田中仁史.开洞形式对混凝土剪力墙抗震性能的影响[J].建筑结构学报, 2009, 30(增刊2):41-46. [4] 周颖,张翠强.地震动选择及输入顺序在振动台试验中的应用研究[J].结构工程师,2012,28(6):60-65. [5] 郑双明.短肢剪力墙-砌块组合墙受力特征及计算方法研究[D].西安:西安建筑科技大学, 2013. [6] 刘晓怡.考虑PC填充墙的装配式联肢剪力墙结构抗震性能试验研究[D].郑州:河南工业大学,2020. [7] 陈婷婷,张敬书,金德保,等.不同种类填充墙周期折减系数取值的分析[J].工程抗震与加固改造, 2013, 35(4):48-53. [8] 胡文博.预制装配式钢筋混凝土一体化剪力墙体抗震性能研究[D].哈尔滨:哈尔滨工业大学, 2015. [9] 种迅,张蓝方,万金亮,等.两层带开洞预制剪力墙抗震性能试验研究与数值模拟分析[J].工程力学,2019,36(5):176-183. [10] 种迅,万金亮,蒋庆,等.水平拼缝部位增强叠合板式剪力墙抗震性能试验研究[J].工程力学,2018,35(4):107-114. [11] 袁辉,朱张峰,董军.填充墙对装配式混凝土联肢剪力墙抗震性能的影响[J].南京工业大学学报(自然科学版), 2018, 40(4):96-101.
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