半刚性框架—密肋约束钢板剪力墙试验研究与数值分析

发布时间：2018-02-20 15:50

本文关键词： 半刚性框架低屈服点钢肋板刚度比钢板剪力墙防屈曲　出处：《西安建筑科技大学》2014年硕士论文　论文类型：学位论文

【摘要】：钢板剪力墙因具有初始侧向刚度大，滞回性能稳定，耗能能力好，延性大等优点受到了国内外学者的广泛关注与研究。本文提出的半刚性框架-密肋约束钢板剪力墙是一种新型的抗侧力体系，用密肋约束内填钢板的面外变形，作为一种新的防屈曲措施，目前国内外学者对该结构体系的研究还较少。本文采用试验研究与数值分析相结合的方法对半刚性钢框架-密肋约束钢板剪力墙的抗震性能进行了深入的研究，并在此基础上系统地分析了密肋约束低屈服点钢板剪力墙的力学性能。本文的主要研究内容及结论如下： 1．首先对半刚性框架-密肋约束钢板剪力墙进行了低周反复荷载作用下的试验研究。结果表明：结构具有良好的延性，，密肋约束有效地抑制了内填钢板的面外变形，提高了结构的承载力、侧向刚度和耗能能力。 2．在试验研究的基础上，建立试件的有限元模型，将有限元分析结果与试验结果进行对比，结果表明两者吻合良好；在此基础上进行变参分析，结果表明密肋可以较好地改善结构的受力性能。 3．对密肋约束钢板剪力墙进行了理论推导和数值分析，结果表明当肋板刚度比达到一定阈值后，增加肋板刚度比对内填钢板的力学性能影响较小，并给出了密肋网格的最小约束刚度比和最小肋板刚度比。 4．分析了不同螺栓布置形式对密肋约束钢板剪力墙的力学性能的影响，给出了螺栓的最大间距与内填钢板厚度的关系。 5．研究了密肋约束低屈服点钢板剪力墙在不同开洞形式下的力学性能，表明密肋约束降低了内填钢板对边缘构件的刚度要求。 6．对半刚性框架-密肋约束低屈服点钢板剪力墙进行了滞回性能研究，分析结果表明：密肋约束钢板剪力墙滞回环较无约束钢板剪力墙饱满，耗能能力也好；低屈服点钢板剪力墙能量耗散系数大于普通钢板剪力墙，密肋约束低屈服点钢板剪力墙抗震性能良好，适合应用于设防烈度较高的地区。
[Abstract]:Steel plate shear wall has high initial lateral stiffness, stable hysteretic performance and good energy dissipation capacity. The advantages of large ductility have been widely paid attention to and studied by scholars at home and abroad. The semi-rigid frame-ribbed steel plate shear wall proposed in this paper is a new type of lateral force resistance system. As a new anti-buckling measure, there are few researches on the structure system at home and abroad. In this paper, the seismic behavior of steel plate shear wall with semi-rigid steel frame and multi-ribbed steel plate is studied by means of the combination of experimental study and numerical analysis. On this basis, the mechanical properties of multi-ribbed low-yield point steel shear wall are systematically analyzed. The main contents and conclusions of this paper are as follows:. 1. The experimental study of semi-rigid frame-ribbed steel plate shear wall under low cyclic cyclic loading is carried out. The results show that the structure has good ductility and the multi-rib constraint can effectively restrain the out-of-plane deformation of the steel plate. The bearing capacity, lateral stiffness and energy dissipation capacity of the structure are improved. 2. On the basis of the experimental research, the finite element model of the specimen is established, and the results of finite element analysis are compared with the experimental results, the results show that the two results are in good agreement with each other, and on this basis, the variable parameter analysis is carried out. The results show that the multi-ribbed structure can improve the mechanical performance of the structure. 3. The theoretical derivation and numerical analysis of the multi-ribbed steel plate shear wall are carried out. The results show that when the ribbed plate stiffness ratio reaches a certain threshold, the increase of ribbed plate stiffness has little effect on the mechanical properties of the steel plate. The minimum constraint stiffness ratio and the minimum ribbed plate stiffness ratio are given. 4. The influence of different bolt arrangement forms on the mechanical properties of steel plate shear wall with multi-ribbed constraints is analyzed, and the relationship between the maximum spacing of bolts and the thickness of inner-filled steel plate is given. 5. The mechanical properties of low yield point steel plate shear walls with multiple rib constraints under different opening forms are studied. 6. The hysteretic behavior of steel plate shear wall with semi-rigid frame-ribbed low yield point is studied. The results show that the hysteretic loop of steel plate shear wall with multi-rib constraint is fuller than that of unconstrained steel plate shear wall, and its energy dissipation capacity is better. The energy dissipation coefficient of steel plate shear wall with low yield point is higher than that of common steel plate shear wall. The multi-ribbed steel plate shear wall with low yield point has good seismic performance and is suitable for use in areas with high fortification intensity.
【学位授予单位】：西安建筑科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU398

【相似文献】