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论文中文题名:

 浆锚连接装配式剪力墙抗震性能研究    

姓名:

 李志龙    

学号:

 16204046023    

学科代码:

 081402    

学科名称:

 结构工程    

学生类型:

 硕士    

学位年度:

 2019    

院系:

 建筑与土木工程学院    

专业:

 结构工程    

第一导师姓名:

 张淑云    

第一导师单位:

 西安科技大学    

论文外文题名:

 Research on Seismic Performance of Prefabricated Shear Wall with Slurry Anchor Connection    

论文中文关键词:

 装配式剪力墙 ; 浆锚连接 ; 抗震性能 ; 非线性分析    

论文外文关键词:

 fabricated shear wall ; slurry anchor connection ; seismic performance ; finite element analysis    

论文中文摘要:
装配式剪力墙由于能工业化制作生产,缩短建造工期,节省人力、物力,并能有效控制尺寸误差、外观质量,目前在国内外得到了广泛的研究和应用。本文对浆锚连接装配式剪力墙的抗震性能进行研究,采用ABAQUS有限元分析软件,通过参数化分析来确定各个参数对浆锚连接装配式剪力墙抗震性能的影响,对于装配式剪力墙的实践应用提供了参考,本文具体研究的内容如下: (1)本文基于已有的装配式剪力墙拟静力试验,通过ABAQUS进行了试验模拟,建模时混凝土采用C3D8R单元,钢筋采用T3D2桁架单元。采用分离式建模,钢筋嵌入到混凝土中,剪力墙与地梁的接触面采用面-面接触。通过施加竖向荷载和水平位移加载分析,有限元模拟与试验结果吻合较好,为后续参数化分析奠定了基础。 (2)对浆锚连接装配式剪力墙进行了低周反复荷载加载,分别改变剪力墙高宽比、轴压比以及水平接缝处连接长度进行计算分析,绘制滞回曲线、骨架曲线、刚度退化曲线以及耗能能力曲线等,来研究浆锚连接装配式剪力墙的抗震性能。研究结果表明:随着高宽比的增大,试件承载力整体呈降低趋势,同时试件的初始刚度减小,刚度退化速度也开始变缓。试件的延性和耗能能力随着高宽比的增大而越来越好。当轴压比增大时,试件的承载力相应提高,而试件的耗能能力随之减弱。浆锚连接装配式剪力墙水平接缝处纵筋连接长度大于锚固长度后,对试件的承载力、刚度、耗能影响不明显。 (3)对连接钢筋直径、连接钢筋排数等进行了分析计算,结果表明:边缘纵筋配筋率较小时,增大墙体边缘钢筋直径,剪力墙耗能能力有所增加,当边缘纵筋配筋率较大时,剪力墙耗能能力随直径的增大而减小。改变剪力墙中间部位连接钢筋数量对剪力墙承载力有一定影响,但不显著。
论文外文摘要:
Assembled shear walls can be industrially produced and produced, shortening the construction period. saves manpower and material resources, and can effectively control dimensional error and appearance quality. At present, it has been widely studied and applied at home and abroad. In this paper, the seismic performance of the slurry-anchored assembled shear wall is studied. The ABAQUS finite element analysis software is used to determine the influence of each parameter on the seismic performance of the slurry-anchored assembled shear wall. The practical application of the wall provides a reference. The specific research content of this paper is as follows: (1)Based on the existing pseudo-static test of fabricated shear wall, the experiment is carried out by ABAQUS. The concrete is C3D8R unit and the steel is T3D2 truss unit. With separate modeling, the steel bars are embedded in the concrete, and the contact faces of the shear wall and the ground beam are in face-to-surface contact. By applying vertical load and horizontal displacement loading analysis, the finite element simulation agrees well with the experimental results, which lays a foundation for subsequent parametric analysis. (2)The low-cycle repeated loading of the shear-bonded shear wall was carried out, and the aspect ratio, axial compression ratio and joint length of the horizontal joint were changed to calculate and analyze the hysteresis curve, skeleton curve and stiffness degradation. Curves and energy consumption curves, etc, to study the seismic performance of the slurry-bonded assembled shear wall. The results show that with the increase of the aspect ratio, the bearing capacity of the specimen decreases overall, and the initial stiffness of the specimen decreases, and the rate of stiffness degradation begins to slow down. The ductility and energy dissipation capacity of the specimen are high. The width ratio is getting bigger and better. When the axial compression ratio is increased, the bearing capacity of the test piece is correspondingly increased, and the energy consuming ability of the test piece is also weakened. After the longitudinal joint connection length of the horizontal joint of the slurry-anchored joint-type shear wall is greater than the anchor length, the bearing capacity, stiffness and energy consumption of the specimen are not obvious. (3)The calculation and calculation of the diameter of the connected steel bars and the number of rows of connected steel bars are carried out. The results show that when the reinforcement ratio of the longitudinal reinforcement is small, the diameter of the reinforcement at the edge of the wall is increased, and the energy consumption of the shear wall is increased. When the rib ratio is large, the energy consumption of the shear wall decreases as the diameter increases. Changing the number of reinforcing bars in the middle part of the shear wall has a certain influence on the bearing capacity of the shear wall, but it is not significant.
中图分类号:

 TU398.2    

开放日期:

 2019-06-27    

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