预制混凝土空心模板剪力墙受剪性能研究

发布时间：2018-05-10 05:26

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结构是一种新型装配整体式剪力墙结构体系，结构形式新颖，国内外尚无相关研究。新型剪力墙具有工厂生产标准化、运输吊装方便、结构整体性好等特点，对其进行研究具有重要的理论意义和应用价值。本文通过拟静力试验和数值模拟对预制混凝土空心模板剪力墙的受力性能进行研究，主要工作如下：（1）进行了5片预制混凝土空心模板剪力墙和1片普通钢筋混凝土剪力墙的低周反复加载试验，研究新型结构的抗震性能。试验结果表明：预制双向孔模板的竖向孔洞薄弱处混凝土出现细小的斜裂缝，随加载进行交错形成宏观竖向裂缝，改变了剪力墙破坏模式，避免脆性破坏，抗震性能良好。（2）研究了内部接缝、轴压比、剪跨比、水平钢筋配筋率等参数对预制混凝土空心模板剪力墙承载能力、延性、水平变形分布及组成、钢筋应变、刚度退化、耗能、破坏机制等受力性能的影响。指出内部接缝是影响预制混凝土空心模板剪力墙受力性能的主要因素，内部接缝引导剪力墙破坏，改变了剪力墙受力机制。（3）基于大型通用有限元软件ABAQUS建立合理的数值分析模型，分析结果与试验结果吻合良好，验证了模型的合理性。该模型可用于预制混凝土空心模板剪力墙的参数分析。（4）建议了预制混凝土空心模板剪力墙受剪承载力计算方法。
[Abstract]:Precast concrete hollow formwork shear wall structure is a new type of assembled integral shear wall structure system. The new shear wall has the characteristics of factory production standardization, convenient transportation and hoisting, good structural integrity and so on, so it has important theoretical significance and application value to study it. In this paper, the mechanical behavior of precast concrete hollow formwork shear wall is studied by pseudo-static test and numerical simulation. The main work is as follows: 1) the low cycle repeated loading tests of five prefabricated concrete hollow formwork shear walls and one common reinforced concrete shear wall are carried out to study the seismic behavior of the new structure. The test results show that small oblique cracks appear in the concrete with weak vertical holes in the prefabricated bidirectional hole formwork, and the macroscopic vertical cracks are formed with the loading, which changes the failure mode of the shear wall, avoids the brittle failure, and has good seismic performance. (2) the effect of internal joints, axial compression ratio, shear span ratio and reinforcement ratio of horizontal reinforcement on the load-carrying capacity, ductility, horizontal deformation distribution and composition of precast concrete hollow formwork shear wall, steel bar strain, stiffness degradation and energy consumption are studied. The influence of mechanical properties such as failure mechanism. It is pointed out that the internal joint is the main factor affecting the mechanical performance of the precast concrete hollow formwork shear wall. The internal joint leads to the failure of the shear wall and changes the mechanical mechanism of the shear wall. 3) A reasonable numerical analysis model is established based on the large scale general finite element software ABAQUS. The results agree well with the experimental results, and the rationality of the model is verified. The model can be used to analyze the parameters of precast concrete hollow formwork shear wall. 4) the calculation method of shear capacity of precast concrete hollow formwork shear wall is suggested.
【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】：TU398.2

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