半刚接钢框架—带支撑钢板剪力墙抗震性能研究

发布时间：2018-01-05 06:06

本文关键词：半刚接钢框架—带支撑钢板剪力墙抗震性能研究　出处：《哈尔滨工业大学》2014年硕士论文　论文类型：学位论文

【摘要】：钢框架—钢板剪力墙体系由框架梁、框架柱、钢板剪力墙构成。钢板剪力墙与框架梁柱共同抵抗水平荷载，其中钢板剪力墙充当主要抗侧力构件；在高层框架-钢板剪力墙结构体系中，连续的钢板剪力墙视为腹板，平面内刚度很大，具有很高的初始刚度，随着水平荷载（水平侧移）增大，内填钢板逐渐形成拉力带（较大的薄膜拉力），提高了结构抗侧移刚度以及承载力等。在实际工程中，作为钢板剪力墙的钢板比较厚，即浪费材料又增大了结构自重。为了结构设计既经济合理又能获得良好的性能，本文提出了半刚接-带支撑钢板剪力墙结构体系，此类结构薄板和支撑协同作用好，当荷载不大时支撑能为薄板提供有效的平面外约束，提高了初始刚度，当荷载继续较大时，薄板逐渐形成多条斜向拉力带，为支撑提供有效的平面外约束；通过前后薄板和支撑之间的协同作用，使得这种结构体系具有很好的静动力性能。基于半刚接-带支撑钢板剪力墙结构体系，本文应用ANSYS有限元软件对结构模型进行非线性静力分析以及时程响应分析，完成了以下内容：（1）对半刚接-带支撑钢板剪力墙结构模型进行了变参数有限元非线性静力分析，研究了支撑形式、跨高比、板厚、支撑截面尺寸对结构的刚度、承载力等的影响规律；分析结果表明：‘X’型支撑结构比‘十’型和单斜型支撑结构的刚度和承载力高；当跨高比为4/3时，板的拉力带发育最好；同时，板厚、支撑截面尺寸也是结构受力性能的主要影响参数。（2）对‘X’支撑一跨一层半刚接钢框架-带支撑钢板剪力墙结构施加往复荷载，分析结构的滞回性能；结果表明：结构滞回环比较饱满，耗能性能良好。（3）对三跨九层的‘X’支撑半刚接钢框架-带支撑钢板剪力墙结构体系和半刚接-带支撑框架结构体系进行了时程响应分析，，对比分析结果，研究了结构体系的耗能情况。总体而言，带支撑钢板剪力墙是一种有效的抗侧力构件，具有较高的承载力以及良好的延性性能；在地震作用下，半刚接钢框架-带支撑钢板剪力墙这种结构体系相比半刚接钢框架-带支撑剪力墙抗震性能好，耗能性能更好。
[Abstract]:Steel frame-steel shear wall system is composed of frame beam, frame column and steel plate shear wall. Steel plate shear wall and frame Liang Zhu resist the horizontal load together, in which steel plate shear wall acts as the main lateral force resistant member. In the high-rise frame-steel shear wall structure system, the continuous steel plate shear wall is regarded as web plate, and the plane stiffness is very large, with a high initial stiffness, which increases with horizontal load (horizontal lateral shift). The inner filled steel plate gradually forms a tensile belt (larger film tension force), which improves the lateral stiffness and bearing capacity of the structure. In the actual engineering, the steel plate as the steel plate shear wall is thicker, which not only wastes the material but also increases the weight of the structure. In order to design the structure, it is economical and reasonable and can obtain good performance. In this paper, a semi-rigid joint-braced steel plate shear wall structure system is proposed. This kind of structure has good synergistic effect between thin plate and bracing. When the load is small, the bracing can provide effective out-of-plane constraint for the thin plate and improve the initial stiffness. When the load continues to be larger, the thin plate gradually forms a number of diagonal tension bands, which provide effective external constraints for the bracing. The structure system has good static and dynamic performance through the synergistic action between the front and rear thin plates and braces. Based on the semi-rigid-braced steel plate shear wall structure system, the nonlinear static analysis of the structure model is carried out by using ANSYS finite element software to analyze the response of the structure in time, and the following contents are completed: In this paper, the nonlinear static analysis of semi-rigid jointed steel plate shear wall model with variable parameters is carried out, and the stiffness of the structure is studied, such as the form of bracing, the ratio of span to height, the thickness of plate, and the size of supporting section. The influence law of bearing capacity and so on; The results show that the stiffness and bearing capacity of the structure are higher than those of the 'ten' and monoclinic bracing structures. When the ratio of span to height is 4/3, the tensile band of the plate is the best. At the same time, the thickness of the plate and the size of the supporting section are also the main influence parameters of the structure. (2) to apply reciprocating load to the steel frame-shear wall structure with steel plate with support, and to analyze the hysteretic behavior of the structure; The results show that the hysteretic loop of the structure is full and energy dissipation is good. In this paper, the time history response analysis of three span and nine story steel frame with steel frame and steel plate shear wall with support and the structure system with half rigid connection and braced frame are carried out, and the results are compared. The energy dissipation of the structure system is studied. Generally speaking, steel plate shear wall with bracing is an effective lateral force resistant member with high bearing capacity and good ductility. Under seismic action, the seismic performance and energy dissipation performance of semi-rigid steel frame-steel shear wall are better than that of semi-rigid steel frame-shear wall.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU391;TU352.11

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