预制装配式钢筋混凝土一体化剪力墙体抗震性能研究
发布时间：2018-07-26 16:55
【摘要】：为了降低较长剪力墙体的抗侧刚度、减轻自重,并提高工业化程度,本文针对预制装配式剪力墙结构,提出了以内置空心管的填充墙与实体剪力墙墙肢一体化浇筑生产、安装施工的新型预制一体化剪力墙结构。具体的做法是:预制钢筋混凝土剪力墙结构浇筑成型前,在填充墙位置预先等距的铺设空心管内模,并在两面设置钢筋网片,填充墙与结构墙一起浇筑预制从而形成了预制一体化剪力墙。针对该类墙体的抗震性能展开了一系列的试验研究和有限元分析,具体研究内容如下:1.设计并制作了5个外形尺寸、墙肢与连梁配筋相同而填充墙做法不同的足尺双肢剪力墙试件,通过拟静力试验对无填充、砌块砌体填充和一体化施工三种填充墙做法进行了抗震性能的研究与比较,总结了这三类墙体结构的破坏形态、受力特点、承载与变形能力、刚度、延性、耗能能力等方面的特点。试验结果表明:预制一体化剪力墙试件相比于无填充墙试件和砌体填充试件,其刚度和水平抗剪承载力有明显的提高,同时具有良好的延性、耗能能力与抗震性能。2.基于Open SEES平台,选用分层壳单元和相应的材料本构模型,对5个剪力墙试验试件进行有限元模拟验证,获得了与试验结果吻合程度较好的滞回曲线、骨架曲线以及墙肢纵筋应变变化曲线。3.根据拟静力试验和有限元分析探究了增大空心管管径、设置聚氨酯泡沫隔断和削弱钢筋网片等构造措施对墙体刚度和承载力的影响规律,给出了合理的构造方案。4.选取不同的填充墙宽度、开缝数、混凝土强度、墙肢配筋和轴压比等参数,进行基于Open SEES的有限元模拟分析,获得上述参数对预制一体化剪力墙体水平抗剪承载力和刚度的影响规律。5.基于试验以及有限元参数分析的结果,提出了预制一体化剪力墙结构的水平抗剪承载力和刚度计算方法:对于一体化开缝剪力墙,可以分别计算墙肢和填充墙的抗剪承载力和刚度,并进行叠加得到。无开缝的一体化剪力墙可以按照整体墙,简化成工字型截面进行抗剪承载力和刚度的计算。
[Abstract]:In order to reduce the lateral stiffness of the long shear wall, reduce the deadweight, and improve the industrialization degree, this paper puts forward the integrated pouring production of the infilled wall and the solid shear wall limb with the built-in hollow pipe, aiming at the prefabricated shear wall structure. Installation of a new type of prefabricated integrated shear wall structure. The concrete method is: before the precast reinforced concrete shear wall structure is put into shape, the hollow pipe internal mold is laid in the filling wall position in advance, and the reinforcement mesh is set on both sides. Filling walls and structural walls are cast together to form prefabricated integrated shear walls. A series of experimental research and finite element analysis are carried out on the seismic behavior of this kind of wall. The specific research contents are as follows: 1. In this paper, five full-scale shear wall specimens with the same reinforcement and different filling methods are designed and fabricated, and the non-filled specimens are tested by pseudo-static test. This paper studies and compares the seismic behavior of three kinds of infilled walls with masonry filling and integrated construction, and summarizes the failure patterns, mechanical characteristics, bearing capacity and deformation capacity, stiffness, ductility of these three kinds of wall structures. Energy dissipation capacity and other aspects of the characteristics. The experimental results show that the stiffness and horizontal shear bearing capacity of prefabricated integrated shear wall specimens are significantly higher than those of unfilled wall specimens and masonry filled specimens. At the same time, the precast shear wall specimens have good ductility, energy dissipation capacity and seismic performance of 0.2. Based on the Open SEES platform, the layered shell element and the corresponding material constitutive model are selected to simulate five shear wall test specimens by finite element method, and the hysteretic curves are obtained, which are in good agreement with the experimental results. Skeleton curve and strain variation curve of longitudinal reinforcement of wall limb. Based on the pseudostatic test and finite element analysis, this paper probes into the influence of structural measures such as increasing the diameter of hollow pipe, setting polyurethane foam partition and weakening reinforcement mesh on the stiffness and bearing capacity of wall, and gives the reasonable construction scheme. The finite element simulation analysis based on Open SEES is carried out by selecting different parameters such as the width of the filled wall, the number of slits, the strength of concrete, the reinforcement of the wall limb and the axial compression ratio, etc. The influence of above parameters on horizontal shear bearing capacity and stiffness of precast integrated shear wall is obtained. Based on the results of experiment and finite element parameter analysis, the calculation method of horizontal shear bearing capacity and stiffness of precast integrative shear wall structure is presented. The shear bearing capacity and stiffness of the wall limb and the infilled wall can be calculated, and the superposition results can be obtained. The integral shear wall without slit can be simplified into I-shaped section according to the integral wall to calculate the shear capacity and stiffness.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU352.11;TU375
本文编号：2146665
[Abstract]:In order to reduce the lateral stiffness of the long shear wall, reduce the deadweight, and improve the industrialization degree, this paper puts forward the integrated pouring production of the infilled wall and the solid shear wall limb with the built-in hollow pipe, aiming at the prefabricated shear wall structure. Installation of a new type of prefabricated integrated shear wall structure. The concrete method is: before the precast reinforced concrete shear wall structure is put into shape, the hollow pipe internal mold is laid in the filling wall position in advance, and the reinforcement mesh is set on both sides. Filling walls and structural walls are cast together to form prefabricated integrated shear walls. A series of experimental research and finite element analysis are carried out on the seismic behavior of this kind of wall. The specific research contents are as follows: 1. In this paper, five full-scale shear wall specimens with the same reinforcement and different filling methods are designed and fabricated, and the non-filled specimens are tested by pseudo-static test. This paper studies and compares the seismic behavior of three kinds of infilled walls with masonry filling and integrated construction, and summarizes the failure patterns, mechanical characteristics, bearing capacity and deformation capacity, stiffness, ductility of these three kinds of wall structures. Energy dissipation capacity and other aspects of the characteristics. The experimental results show that the stiffness and horizontal shear bearing capacity of prefabricated integrated shear wall specimens are significantly higher than those of unfilled wall specimens and masonry filled specimens. At the same time, the precast shear wall specimens have good ductility, energy dissipation capacity and seismic performance of 0.2. Based on the Open SEES platform, the layered shell element and the corresponding material constitutive model are selected to simulate five shear wall test specimens by finite element method, and the hysteretic curves are obtained, which are in good agreement with the experimental results. Skeleton curve and strain variation curve of longitudinal reinforcement of wall limb. Based on the pseudostatic test and finite element analysis, this paper probes into the influence of structural measures such as increasing the diameter of hollow pipe, setting polyurethane foam partition and weakening reinforcement mesh on the stiffness and bearing capacity of wall, and gives the reasonable construction scheme. The finite element simulation analysis based on Open SEES is carried out by selecting different parameters such as the width of the filled wall, the number of slits, the strength of concrete, the reinforcement of the wall limb and the axial compression ratio, etc. The influence of above parameters on horizontal shear bearing capacity and stiffness of precast integrated shear wall is obtained. Based on the results of experiment and finite element parameter analysis, the calculation method of horizontal shear bearing capacity and stiffness of precast integrative shear wall structure is presented. The shear bearing capacity and stiffness of the wall limb and the infilled wall can be calculated, and the superposition results can be obtained. The integral shear wall without slit can be simplified into I-shaped section according to the integral wall to calculate the shear capacity and stiffness.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU352.11;TU375
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