钢管高强混凝土剪力墙受剪性能试验研究

发布时间：2018-04-09 03:33

本文选题：钢管高强混凝土剪力墙　切入点：小剪跨比　出处：《华南理工大学》2013年硕士论文

【摘要】：钢管高强混凝土剪力墙（STCHSC剪力墙）是一种新型的组合构件。方小丹、蒋标等人对此组合构件的轴压性能进行了试验研究；方小丹、李青等人对该组合构件的压弯性能进行了试验研究。为系统研究钢管高强混凝土的受力性能，本文对STCHSC剪力墙的受剪性能进行了试验研究。主要工作和研究成果如下： (1)完成了22个STCHSC剪力墙小剪跨比试件在水平单调荷载下的受剪试验，主要变化参数包括剪跨比、管外混凝土强度、轴压比、截面形式、配筋形式、水平配筋率和竖向配筋率。试验中观察并记录了STCHSC剪力墙的受力、变形、开裂、破坏全过程； (2)分析了STCHSC剪力墙受剪破坏形态、荷载-位移曲线、开裂荷载、变形能力、刚度特性及承载能力等关键性能。试验结果表明：剪力墙的破坏形态为斜压破坏。STCHSC剪力墙初始刚度大,承载能力高，破坏时有一定的变形能力； (3)在STCHSC剪力墙试验研究的基础上，利用非线性有限元软件ABAQUS建立了剪力墙的力学模型，模拟结果与试验结果进行了对比分析、相互验证。结果表明，模拟分析能够很好的反映STCHSC剪力墙的主应力分布规律，承载力与试验值相比偏低； (4)根据试验结果，，结合已有的设计规范及相关受剪分析模型，提出了STCHSC剪力墙受剪承载力计算公式，其计算结果与试验结果吻合良好，且有一定的安全储备。本文的研究成果为STCHSC剪力墙的受剪设计提供了试验依据，对其设计和工程应用具有重要的意义。
[Abstract]:STCHSC shear wall is a new type of composite member.Fang Xiaodan, Jiang Biao, et al., and Fang Xiaodan, Li Qing, etc., have carried out experimental research on the axial compression behavior of the composite member, and carried out an experimental study on the compression and bending behavior of the composite member.In order to systematically study the mechanical behavior of high strength concrete filled steel tube (CFST), the shear behavior of STCHSC shear wall is studied experimentally in this paper.The main findings and findings are as follows:1) the shear tests of 22 STCHSC shear wall specimens with small shear span ratio under horizontal monotone load have been completed. The main parameters include shear span ratio, concrete strength outside pipe, axial compression ratio, section form, reinforcement form, horizontal reinforcement ratio and vertical reinforcement ratio.The whole process of stress, deformation, cracking and failure of STCHSC shear wall was observed and recorded in the experiment.The key properties of STCHSC shear wall, such as shear failure mode, load-displacement curve, cracking load, deformation capacity, stiffness characteristic and bearing capacity, are analyzed.The experimental results show that the failure mode of shear wall is baroclinic failure. STCHSC shear wall has large initial stiffness, high bearing capacity and certain deformation ability.Based on the experimental study of STCHSC shear wall, the mechanical model of shear wall is established by using the nonlinear finite element software ABAQUS. The simulation results are compared with the experimental results and verified by each other.The results show that the simulation analysis can well reflect the principal stress distribution of STCHSC shear wall, and the bearing capacity is lower than the experimental value.4) according to the test results, combined with the existing design code and related shear analysis model, the calculation formula of shear bearing capacity of STCHSC shear wall is put forward. The calculated results are in good agreement with the test results and have a certain safety reserve.The research results in this paper provide experimental basis for the shear design of STCHSC shear wall, and are of great significance for its design and engineering application.
【学位授予单位】：华南理工大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU398.9

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