空间钢构架混凝土厚板抗冲切性能有限元分析
发布时间：2018-08-06 19:02
【摘要】：厚板的厚度一般不是由弯曲承载力决定,而是由厚板的抗冲切承载力控制。采取有效措施,提高厚板的抗冲切承载力,减小厚板的厚度(质量),有利于带厚板高层建筑结构的抗震性能。本文分别利用薄板理论、厚板理论(Ressiner中厚板理论)以及ABAQUS有限元分析软件分析四边简支板中心点的弯矩和挠度等的变化规律,对薄板以及厚板的受力性能进行分析。为研究提高厚板的抗冲切承载力的配筋形式,本文探索一种新的抗冲切形式—空间钢构架。为研究钢筋混凝土简支厚板的抗冲切性能,采用ABAQUS有限元软件,建立了钢筋混凝土简支厚板抗冲切的非线性有限元模型,在非线性有限元模型验证的基础上,分别对配置抗冲切箍筋、空间钢构架、抗冲切锚栓以及型钢剪力架的钢筋混凝土厚板的冲切性能进行了比较分析,并分析了空间钢构架缀条截面面积和间距、设置斜腹杆等参数对钢筋混凝土厚板抗冲切性能的影响。分析结果表明:抗冲切箍筋、空间钢构架、抗冲切锚栓以及型钢剪力架等配筋形式均能够有效提高钢筋混凝土厚板的抗冲切承载力,其中配置空间钢构架对钢筋混凝土厚板抗冲切承载力提高程度最为显著。空间钢构架对钢筋混凝土厚板抗冲切承载力的影响因素可以用空间钢构架混凝土综合影响系数s?来综合考虑。随着综合影响系数s?增大,试件的抗冲切极限承载力近似呈线性地增大。这些结论可以为空间钢构架在钢筋混凝土中厚板中的应用提供技术依据。
[Abstract]:The thickness of thick plate is not usually determined by bending capacity, but controlled by punching shear capacity of thick plate. Effective measures are taken to improve the punching shear capacity of thick plates and to reduce the thickness (quality) of thick plates, which is beneficial to the seismic performance of tall buildings with thick plates. In this paper, thin plate theory, thick plate theory (Ressiner medium thick plate theory) and ABAQUS finite element analysis software are used to analyze the bending moment and deflection of the center point of the simply supported plate on the four sides, and the mechanical properties of the thin plate and thick plate are analyzed. In order to study the reinforcement form to improve the punching shear capacity of thick plate, this paper explores a new punching shear form-spatial steel frame. In order to study the impact shear behavior of reinforced concrete simply supported thick slab, a nonlinear finite element model of reinforced concrete simple supported thick slab is established by using ABAQUS finite element software. The nonlinear finite element model is verified on the basis of nonlinear finite element model. The punching behavior of reinforced concrete thick slabs with punching stirrups, spatial steel frames, punch-shear anchors and steel shear frames are compared and analyzed, and the section area and spacing of spatial steel frames are analyzed. The influence of the parameters such as inclined web bar on the punching shear behavior of reinforced concrete thick slab. The results show that the punching shear capacity of reinforced concrete thick slab can be improved effectively by reinforcement such as punching stirrups, space steel frame, punching shear bolt and steel shear frame. The steel frame with space is the most significant to enhance the punching shear capacity of reinforced concrete thick slab. The influence factors of spatial steel frame on the punching shear capacity of reinforced concrete thick slab can be used as the comprehensive influence coefficient of space steel frame concrete s? To consider. With the comprehensive influence coefficient s? The ultimate bearing capacity of punching shear increases linearly when the specimen increases. These conclusions can provide technical basis for the application of space steel frame in reinforced concrete plate.
【学位授予单位】：苏州科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU398.9
[Abstract]:The thickness of thick plate is not usually determined by bending capacity, but controlled by punching shear capacity of thick plate. Effective measures are taken to improve the punching shear capacity of thick plates and to reduce the thickness (quality) of thick plates, which is beneficial to the seismic performance of tall buildings with thick plates. In this paper, thin plate theory, thick plate theory (Ressiner medium thick plate theory) and ABAQUS finite element analysis software are used to analyze the bending moment and deflection of the center point of the simply supported plate on the four sides, and the mechanical properties of the thin plate and thick plate are analyzed. In order to study the reinforcement form to improve the punching shear capacity of thick plate, this paper explores a new punching shear form-spatial steel frame. In order to study the impact shear behavior of reinforced concrete simply supported thick slab, a nonlinear finite element model of reinforced concrete simple supported thick slab is established by using ABAQUS finite element software. The nonlinear finite element model is verified on the basis of nonlinear finite element model. The punching behavior of reinforced concrete thick slabs with punching stirrups, spatial steel frames, punch-shear anchors and steel shear frames are compared and analyzed, and the section area and spacing of spatial steel frames are analyzed. The influence of the parameters such as inclined web bar on the punching shear behavior of reinforced concrete thick slab. The results show that the punching shear capacity of reinforced concrete thick slab can be improved effectively by reinforcement such as punching stirrups, space steel frame, punching shear bolt and steel shear frame. The steel frame with space is the most significant to enhance the punching shear capacity of reinforced concrete thick slab. The influence factors of spatial steel frame on the punching shear capacity of reinforced concrete thick slab can be used as the comprehensive influence coefficient of space steel frame concrete s? To consider. With the comprehensive influence coefficient s? The ultimate bearing capacity of punching shear increases linearly when the specimen increases. These conclusions can provide technical basis for the application of space steel frame in reinforced concrete plate.
【学位授予单位】：苏州科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU398.9
【参考文献】
相关期刊论文 前10条
1 吴艺;吕西林;扶长生;;型钢剪力架板柱节点抗震性能研究[J];结构工程师;2016年03期
2 李伟强;唐兴荣;贾欢;;空间钢构架—钢管混凝土短柱轴压承载力计算方法[J];广西大学学报(自然科学版);2016年03期
3 贾欢;唐兴荣;李伟强;;空间钢构架—钢管混凝土柱受力性能有限元分析[J];广西大学学报(自然科学版);2016年03期
4 孙庆昭;;ABAQUS混凝土塑性损伤模型概述[J];重庆建筑;2014年11期
5 秦浩;赵宪忠;;ABAQUS混凝土损伤因子取值方法研究[J];结构工程师;2013年06期
6 张劲;王庆扬;胡守营;王传甲;;ABAQUS混凝土损伤塑性模型参数验证[J];建筑结构;2008年08期
7 刘文s，
本文编号：2168693
本文链接：https://www.wllwen.com/jianzhugongchenglunwen/2168693.html
