波纹钢板组合剪力墙力学性能研究

发布时间：2018-06-07 15:20

本文选题：组合结构 + 剪力墙　；参考：《郑州大学》2017年硕士论文

【摘要】：剪力墙,是高层建筑结构的基本抗侧力构件之一,广泛应用于剪力墙结构、框架-剪力墙结构、筒体结构等多种抗侧力结构体系中。传统的现浇钢筋混凝土剪力墙由于其自重大,因此分配的地震作用也大,并且具有施工周期长、湿作业施工强度高等缺点。因此,目前在学术界及工程界,对各种类型的预制混凝土剪力墙、钢板剪力墙、钢-混凝土组合剪力墙的开发、研究及应用,一直受到广泛地关注。波纹钢板组合剪力墙是一种新型的钢-混凝土组合剪力墙,是在波纹钢板剪力墙及平钢板组合剪力墙的基础上发展起来的一种具有创新设计理念的新型结构构件,具有截面尺寸小,抗侧刚度大,承载性能高等优点,但目前国内对波纹钢板组合剪力墙的研究基本还处于起步阶段,需要对其受力机理、抗震性能、设计构造等进行深入、系统地研究。论文采用数值模拟方法,应用有限元分析软件ABAQUS,对波纹钢板组合剪力墙的静力承载及抗震性能开展研究。首先,根据所查阅文献中的对边连接钢板剪力墙、四边连接钢板剪力墙的几何尺寸、力学参数及试验加载条件,分别建立了相应的有限元分析模型,通过数值模拟结果与文献试验结果的对比,验证了本文所采用有限元建模方法的正确性。在此基础上,将钢板剪力墙中的平钢板改为波纹钢板,分别提出了波纹钢板剪力墙、波纹钢板组合剪力墙的设计概念,对两边连接波纹钢板剪力墙、四边连接波纹钢板剪力墙、波纹钢板组合剪力墙的线性屈曲、静力极限承载力及低周反复承载力,进行了较为系统的计算与分析。最后,针对前文研究所得力学性能更优的竖波纹钢板组合剪力墙,通过有限元建模计算,对比分析了波形与波距、含钢率、混凝土强度等主要设计参数对其静力极限承载力及低周反复承载力的影响。论文主要结论为:(1)波纹钢板剪力墙:采用两边连接时,竖波纹钢板剪力墙的承载性能及抵抗变形能力较优,在所研究的3种高宽比情况下,竖波纹钢板剪力墙的静力最大承载力比平钢板剪力墙高3.0%以上,比水平波纹钢板剪力墙高70%以上;最大面外变形比平钢板剪力墙小15.0%以上,比水平波纹钢板剪力墙小3.0%以上。采用四边连接:当高宽比为0.8时,竖波纹钢板剪力墙较优,竖波纹钢板剪力墙的静力最大承载力比平钢板剪力墙高1.2%;高宽比为1.5及2.0时,水平波纹钢板剪力墙较优,静力最大承载力比平钢板剪力墙高8.5%、17.0%,最大面外变形比平钢板剪力墙小4.8%、89.7%。(2)波纹钢板组合剪力墙:高宽比为0.8时,竖波纹钢板组合剪力墙最大承载力比平钢板组合剪力墙高7.3%;高宽比为1.5和2.0时,水平波纹钢板组合剪力墙的最大承载力比平钢板组合剪力墙高6%和11%。(3)截面含钢率是对竖波纹钢板组合剪力墙承载性能影响最大的设计参数:含钢率每增加1.0%,组合剪力墙的静力承载力增大18.3%以上,低周反复承载力提高20.0%以上,抗侧刚度提高9.2%。采用正弦波的钢板组合剪力墙承载性能不及采用梯形波纹的钢板组合剪力墙;对3种不同波距的梯形波纹钢板组合剪力墙进行静力分析,波距小的波纹钢板组合剪力墙刚度退化速度较慢。提高混凝土强度等级对竖波纹钢板组合剪力墙承载力的提高贡献不大。论文研究结果表明,波纹钢板组合剪力墙具有较大的抗侧刚度和抗震承载性能,所得结论可为波纹钢板组合剪力墙今后在工程中的应用提供一定的参考。
[Abstract]:Shear walls, which are one of the basic side resistance components of tall building structures, are widely used in shear wall structure, frame shear wall structure, tube structure and other anti lateral force structures. The traditional cast-in-place reinforced concrete shear walls are used because of their own importance, so the construction period is long and wet operation construction is long. Therefore, the development, research and application of various types of precast concrete shear walls, steel plate shear walls and steel concrete composite shear walls have been widely concerned at present in the academic and engineering circles. The corrugated steel plate shear wall is a new type of steel concrete composite shear wall, which is a corrugated steel plate shear wall. A new structural member with innovative design concept developed on the basis of flat steel plate composite shear walls has the advantages of small section size, large side stiffness and high bearing performance. However, the research on corrugated steel plate shear walls in China is still in the initial stage at present, and it needs to be subjected to its force mechanism, seismic performance and design structure. The paper uses the numerical simulation method and the finite element analysis software ABAQUS to carry out the research on the static bearing capacity and seismic performance of the corrugated steel plate shear wall. First, the geometric size, mechanical parameters and test of the steel plate shear walls connected with the side connection steel plate shear walls in the literature are based on the literature. According to the loading condition, the corresponding finite element analysis model is set up respectively. Through the comparison of the numerical simulation results and the literature test results, the correctness of the finite element modeling method used in this paper is verified. On this basis, the flat steel plate in the steel plate shear wall is changed to corrugated steel plate, and the corrugated steel plate shear wall and the corrugated steel plate shear wall shear wall are put forward. The design concept of force wall is used to calculate and analyze the linear buckling, static ultimate bearing capacity and low cyclic bearing capacity of corrugated steel plate shear walls connected to both sides, four sides of corrugated steel plate shear walls, corrugated steel plate shear walls, and low cyclic bearing capacity. Finally, the combined shear of vertical corrugated steel plate with better mechanical properties obtained from the previous study has been carried out. The force wall, through the finite element modeling calculation, contrasts and analyzes the influence of the main design parameters such as wave and wave distance, steel ratio, concrete strength and other main design parameters on its static ultimate bearing capacity and low cyclic bearing capacity. The main conclusions are as follows: (1) corrugated steel plate shear walls: bearing performance and resistance to deformation energy of vertical corrugated steel plate shear walls when both sides are connected. The maximum load capacity of the vertical corrugated steel plate shear wall is more than 3% higher than that of the horizontal corrugated steel plate shear wall, which is over 70% higher than that of the horizontal corrugated steel plate shear wall, and the maximum out of plane deformation is more than 15% smaller than that of the flat plate shear wall, and more than 3% smaller than the horizontal corrugated steel plate shear wall. The 3 side connections are higher than that of the horizontal corrugated steel plate shear wall. When the width ratio is 0.8, the vertical corrugated steel plate shear wall is better, the static maximum bearing capacity of the vertical corrugated steel plate shear wall is 1.2% higher than that of the flat plate shear wall. When the height width ratio is 1.5 and 2, the horizontal corrugated steel plate shear wall is better, the static maximum bearing capacity is 8.5%, 17% higher than the flat plate shear wall, and the maximum out of plane deformation is 4.8%, 89.7%. (2) wave smaller than that of the flat plate shear wall. When the height to width ratio is 0.8, the maximum bearing capacity of the vertical corrugated steel plate composite shear wall is 7.3% higher than that of the flat steel plate composite shear wall; the maximum bearing capacity of the horizontal corrugated steel plate composite shear wall is 6% and the 11%. (3) section bearing steel ratio is bearing the bearing capacity of the vertical corrugated steel plate composite shear wall when the height width ratio is 1.5 and 2. The design parameters that have the greatest impact on Performance: the steel ratio is increased by 1%, the static bearing capacity of the composite shear wall is increased by more than 18.3%, the cyclic loading capacity of the low cycle is raised by more than 20%. The bearing performance of the steel plate composite shear wall using the sine wave of 9.2%. is less than that of the trapezoid corrugated steel plate combined shear wall, and the trapezoidal trapezium with 3 different wave distances is made. The combined shear wall of corrugated steel plate is static analysis, and the stiffness degradation of the composite shear wall with small wave distance is slower. The improvement of concrete strength grade has little contribution to the improvement of the bearing capacity of the vertical corrugated steel plate combined shear wall. The results of the paper show that the composite shear wall with corrugated steel plate has greater lateral stiffness and seismic bearing capacity. The conclusions can provide some references for the future application of corrugated steel composite shear walls in engineering.
【学位授予单位】：郑州大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU973.16

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