带竖向接缝的预制混凝土空心模板剪力墙抗震性能试验研究

发布时间：2018-05-05 06:23

本文选题：住宅产业化 + 剪力墙　；参考：《烟台大学》2014年硕士论文

【摘要】：预制混凝土空心模板剪力墙（空心模板剪力墙）是一种适用于住宅产业化的新型结构体系，竖向接缝性能是影响墙体整体性和抗震性的重要因素。本文对带竖向接缝的预制混凝土空心模板剪力墙（带竖向接缝的空心模板剪力墙）的抗震性能进行了较为系统的研究，主要研究内容和成果如下所述： (1)带内部接缝的空心模板剪力墙试验研究。通过1片钢筋混凝土剪力墙和1片空心模板剪力墙的拟静力试验，研究了内部接缝对墙体受力性能的影响。结果表明：空心模板剪力墙具有自适应分缝功能；在水平荷载作用下墙体沿内部接缝出现竖向裂缝，墙体经历了整截面墙到墙柱组合体的破坏过程，避免了脆性剪切破坏，提高了墙体的延性和耗能能力，墙体的受剪承载力有所降低。 (2)具有不同构造竖向接缝的空心模板剪力墙的受力性能试验研究。进行了3片带竖向接缝的空心模板剪力墙的拟静力试验，研究了竖向接缝构造对墙体受力性能的影响。试验结果表明：在峰值荷载前竖向接缝两侧发生相对变形，墙体演变为由两个带内部接缝墙体组成的分缝剪力墙，提高了墙体的变形能力；在不削弱水平孔洞内后浇混凝土的前提下，竖向接缝处采用木条补替部分混凝土，有助于提高墙体的变形能力。 (3)带竖向接缝的空心模板剪力墙抗震性能试验研究。对5片带竖向接缝的空心模板剪力墙进行了拟静力试验，研究了轴压比、剪跨比、水平钢筋配筋率等参数对带竖向接缝的空心模板剪力墙抗震性能的影响。结果表明：增加轴压比可提高墙体的受剪承载力；随着剪跨比的提高，，墙体受剪承载力逐渐降低；提高水平钢筋配筋率可增强墙体的耗能能力。 (4)建立了带竖向接缝的空心模板剪力墙数值模型。采用有限元软件ABAQUS，建立了带竖向接缝的空心模板剪力墙数值模型，计算结果与试验结果吻合较好。 (5)提出了带竖向接缝的空心模板剪力墙受剪承载力计算方法。
[Abstract]:Precast concrete hollow formwork shear wall is a new structure system suitable for housing industrialization. The vertical joint performance is an important factor affecting the integrity and seismic resistance of the wall. In this paper, the seismic behavior of precast concrete hollow formwork shear wall with vertical joint (hollow formwork shear wall with vertical joint) is studied systematically. The main research contents and results are as follows: Experimental study of hollow formwork shear wall with internal joint. Based on the quasi-static test of a reinforced concrete shear wall and a hollow formwork shear wall, the effect of internal joints on the mechanical properties of the wall is studied. The results show that the hollow formwork shear wall has the function of adaptive split joints, the vertical cracks appear along the joints of the wall under horizontal load, and the wall goes through the failure process from the whole section wall to the composite body of the wall column, thus avoiding the brittle shear failure. The ductility and energy dissipation capacity of the wall are improved, and the shear capacity of the wall is decreased. Experimental study on the mechanical behavior of hollow formwork shear wall with different vertical joints. The pseudostatic tests of three hollow formwork shear walls with vertical joints were carried out and the effects of vertical joints on the mechanical properties of the walls were studied. The experimental results show that relative deformation occurs on both sides of vertical joint before peak load, and the wall becomes a jointed shear wall composed of two walls with internal joints, which improves the deformation capacity of the wall. On the premise of not weakening the post-pouring concrete in the horizontal hole, it is helpful to improve the deformation ability of the wall by replacing some concrete with wood strips at the vertical joint. Experimental study on seismic behavior of hollow formwork shear wall with vertical joint. Five hollow formwork shear walls with vertical joints were tested by pseudo-static test. The effects of axial compression ratio, shear span ratio and reinforcement ratio on seismic behavior of hollow formwork shear walls with vertical joints were studied. The results show that the shear bearing capacity of the wall can be increased by increasing the axial compression ratio, the shear bearing capacity of the wall decreases gradually with the increase of the shear span ratio, and the energy dissipation capacity of the wall can be enhanced by increasing the reinforcement ratio of horizontal reinforcement. The numerical model of hollow formwork shear wall with vertical joint is established. The numerical model of hollow formwork shear wall with vertical joint is established by using the finite element software Abaqus. The calculated results are in good agreement with the experimental results. A method for calculating the shear capacity of hollow formwork shear wall with vertical joint is presented.
【学位授予单位】：烟台大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU375;TU352.11

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