开洞双钢板混凝土组合剪力墙抗震性能研究

发布时间：2018-06-24 22:09

本文选题：双钢板混凝土组合剪力墙 + 开洞　；参考：《东北石油大学》2017年硕士论文

【摘要】：开洞双钢板混凝土组合剪力墙结构以其高承载力和良好的抗震性能在高层和超高层建筑中得到初步应用。本文结合一字型多腔双钢板混凝土组合剪力墙和开洞双钢板混凝土组合剪力墙构建一种新型多腔开洞双钢板混凝土组合剪力墙结构(简称普通开洞双钢板组合剪力墙),在此基础上,将钢管约束混凝土的概念引入普通开洞双钢板组合剪力墙,通过在每层组合剪力墙顶与楼板交接处将外包钢板切断并预留一定宽度的缝隙形成一种新型组合剪力墙结构(简称为约束型开洞双钢板组合剪力墙)。两种结构均能够满足结构承载能力和刚度的要求,抗震性能良好,还能够满足建筑预留门窗洞口的要求,外侧钢板使墙体表面平整且可兼做模板,加快施工速度,内部混凝土也可起到保温、隔音的作用,在高层和超高层建筑结构中有良好的应用前景。但如何对其进行参数优化,约束型开洞双钢板混凝土组合剪力墙结构在不同地震波作用下的抗震性能如何,是其应用于工程实际之前需要解决的问题。围绕这一问题,本文进行了以下几方面具体工作:1.为验证利用ABAQUS模拟开洞双钢板混凝土组合剪力墙结构抗震性能的可行性与合理性,本文利用ABAQUS建立与既有试验中的开洞双钢板混凝土组合剪力墙模型相同的有限元模型,在相同受力情况下有限元模型与试验模型的初始刚度、屈服荷载和峰值承载力最大误差均在可接受的范围内,因此本文认为利用ABAQUS模拟开洞双钢板混凝土组合剪力墙结构抗震性能是可行的。2.为对开洞双钢板混凝土组合剪力墙进行参数优化,本文利用ABAQUS建立单层单片开洞双钢板组合剪力墙有限元模型,通过对比分析应力云图、面外位移图、滞回曲线和骨架曲线研究钢板厚度、钢材强度、混凝土强度、洞口形式、轴压比、钢板高度、隔板间距、混凝土板厚度和高厚比对其在水平往复荷载作用下滞回性能的影响,其中改变钢板高度旨在研究约束型开洞双钢板组合剪力墙中预留缝隙的最优宽度。分析结果表明:钢板厚度、混凝土板厚度和高厚比对组合剪力墙的初始刚度与承载力影响显著,混凝土强度等级、洞口形式、轴压比、钢板高度和隔板间距对组合剪力墙初始刚度和承载力影响不大,钢材强度对组合剪力墙的初始刚度和延性基本没有影响,但对组合剪力墙的承载力影响较大。3.为研究约束型开洞双钢板组合剪力墙在不同地震波作用下的抗震性能,本文利用ABAQUS建立不同墙体厚度的十层普通开洞双钢板组合剪力墙结构与十层约束型开洞双钢板组合剪力墙结构有限元模型,采用时程分析法对其在不同8度多遇、8度罕遇和9度罕遇地震波作用下的抗震性能进行对比分析。分析结果表明:在不同地震波作用下,结构地震响应曲线的变化规律与输入地震波相近,但出现了峰值滞后的现象;结构的地震响应不仅与地震强度和结构形式有关,还和输入地震波波形有关;在多遇地震波作用下墙体厚度对结构的地震响应影响不是很大,在罕遇地震波作用下墙体厚度对约束型开洞双钢板组合剪力墙结构的地震响应影响不是很大,对普通开洞双钢板组合剪力墙结构的地震响应较为明显;不同地震波作用下的同一墙体厚度的约束型开洞双钢板组合剪力墙结构的加速度响应峰值小于普通开洞双钢板组合剪力墙结构,说明约束型开洞双钢板组合剪力墙抗震性能更好;结构在不同地震波作用下均未发生破坏。
[Abstract]:With its high bearing capacity and good seismic performance, the open double steel concrete composite shear wall structure is preliminarily applied to high rise and super high-rise buildings. In this paper, a new type of composite shear wall with multiple cavity and double steel plate concrete composite shear walls and double steel plate concrete composite shear walls is built in this paper. On this basis, the concept of steel tube confined concrete is introduced into a general open double steel plate composite shear wall, and a new type of composite shear wall structure is formed by cutting off the steel plate and retaining a certain width at the junction of each composite shear wall top to the floor. The two structures can meet the requirements of the bearing capacity and stiffness of the structure. It has good seismic performance and can meet the requirements of the opening of the opening doors and windows of the building. The outer steel plate makes the wall surface smooth and can be used as a template to speed up the construction speed. The internal concrete can also play the role of insulation and sound insulation. There is a good application prospect in high-rise and super high-rise building structures. However, how to optimize its parameters and how the seismic performance of the constrain open double steel concrete composite shear wall structure under the action of different seismic waves is a problem that needs to be solved before it is applied to the engineering practice. The specific work: 1. is to verify the feasibility and rationality of using ABAQUS to simulate the seismic performance of the composite shear wall structure with open double steel plate concrete. This paper uses ABAQUS to establish the same finite element model as the model of the open double steel concrete composite shear wall model in the existing experiment, and the initial finite element model and the experimental model under the same stress condition. The maximum error of the initial stiffness, the yield load and the peak load capacity are all acceptable. Therefore, this paper considers that the seismic performance of the double steel reinforced concrete composite shear wall structure with ABAQUS is feasible and.2. is the parameter optimization for the double steel plate concrete composite shear wall with open holes. In this paper, a single single layer single hole double hole double shear wall is established in this paper. The finite element model of steel plate composite shear wall is made to study the influence of steel plate thickness, steel strength, concrete strength, hole form, axial compression ratio, steel plate height, partition spacing, thickness and thickness ratio of concrete plate under horizontal reciprocating load by comparison and analysis of stress cloud, surface displacement diagram, hysteresis curve and skeleton curve. The results show that the thickness of the steel plate, the thickness of the concrete plate and the high thickness ratio have significant influence on the initial stiffness and bearing capacity of the composite shear wall, and the strength grade of the concrete, the form of the hole, the axial compression ratio, the height of the steel plate and the spacing of the baffle plate. The initial stiffness and bearing capacity of the composite shear wall have little influence. The strength of steel has no effect on the initial stiffness and ductility of the composite shear wall, but the bearing capacity of the composite shear wall is greatly influenced by.3. as the seismic performance of the confined double steel plate composite shear wall under the action of different seismic waves. In this paper, different walls are established by using ABAQUS. The finite element model of ten layers of composite shear wall structure with body thickness and ten layer restrained open double steel plate combined shear wall structure is used to analyze the seismic performance of the composite shear wall structure under the action of different 8 degrees, 8 degrees and 9 rare earthquake waves by time history analysis. The variation of structural seismic response curve is similar to that of the input seismic wave, but there is a phenomenon of peak lag. The seismic response of the structure is not only related to the earthquake intensity and structure form, but also related to the waveform of the input seismic wave. The thickness of the wall is not very important to the seismic response of the structure under the action of many seismic waves. The influence of the thickness of the lower wall on the seismic response of the composite shear wall structure with restricted open double steel plate is not great. The seismic response of the composite shear wall structure with the ordinary opening double steel plate is more obvious, and the acceleration response peak of the double steel plate composite shear wall with the same wall thickness under the action of different seismic waves is less than that of the universal shear wall structure. The composite shear wall structure with open hole double steel plate shows that the seismic performance of the restrained open double steel plate composite shear wall is better, and the structure has not been damaged under the action of different seismic waves.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU398.2;TU352.11

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