预制外挂墙板在水平位移作用下的受力性能研究

发布时间：2018-01-03 09:04

本文关键词：预制外挂墙板在水平位移作用下的受力性能研究　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】：近年来,预制外挂墙板的应用越来越广泛,其在水平位移作用下的性能表现需要进行系统的研究。本文采用试验和有限元分析的方法研究了水平位移作用下的预制外挂墙板受力性能。研究内容主要包括墙体材料力学性能研究、粘结界面力学性能研究以及墙板整体力学性能研究。本文主要研究工作如下:进行了陶粒混凝土和砂浆的立方体抗压试验、劈裂抗拉试验和弹性模量试验,确定了轴心拉压强度及峰值应变,结合已有单轴应力应变方程,推导了直接对应于本文所用材料的单轴应力应变全曲线方程,保证了后续有限元分析所需材料数据的准确性。进行了陶粒混凝土—砂浆粘结界面拉伸粘结强度拉拔试验和Z型试件直剪试验,得到了陶粒混凝土与砂浆之间的拉伸粘结强度以及粘结界面切向粘结滑移曲线上升段数据,考虑粘结界面附近剪切变形后通过线性拟合得到了的粘结界面接触切向刚度。建立了Z型拼合试件直剪试验有限元分析模型,相应的试验数据与数值模拟分析方法的确定为墙板整体受力分析提供了基础。进行了外挂墙板在水平位移作用下的缩尺试验,得到了相应荷载—位移曲线,分析了墙板整体各阶段受力情况。基于前文对材料和粘结界面力学性能的研究结果建立了墙板缩尺试验和C型对接灌封外挂墙板的有限元分析模型。有限元分析所得荷载—位移曲线与试验结果在阶段Ⅰ较接近,但峰值荷载前者要大于后者。对比分析了粘结界面接触不同力学性能情况对墙板整体侧向受力性能的影响。根据有限元计算结果,分析了C型对接灌封外挂墙板节点受力情况,发现端部节点与中间节点受力情况存在明显差异,端部连接节点受合力大小约为中间连接节点的两倍。
[Abstract]:In recent years, more and more widely prefabricated external wall panels, the horizontal displacement under the action of performance needs a systematic study. This method using experimental and finite element analysis of horizontal displacement under the action of prefabricated external wall panels force performance. The research content mainly includes research on mechanical properties of wall materials, the overall mechanical Properties Study on mechanical properties of bonding interface and the wall. The main works are as follows: the compressive test of ceramsite concrete and mortar, splitting tensile strength and elastic modulus test, the axial compressive strength and peak strain, combined with the existing uniaxial stress-strain equations, strain curve equations of uniaxial stress is deduced correspond directly to this material, to ensure the accuracy of the finite element analysis of required materials data. The bonding interface of ceramsite concrete and mortar The tensile bond strength of Z type specimen tensile test and direct shear test, obtained between concrete and mortar tensile bond strength and bond shear ascent data to the bond slip curve, considering the shear deformation near the bonding interface by linear fitting of the interfacial contact tangential stiffness. The Z type split straight the finite element analysis model of shear test specimen, determine the simulation method provide the basis for the analysis of wall overall force of the corresponding test data and numerical tests are carried out. The scale of external wall panels in the horizontal displacement under the action of the corresponding load displacement curve, analysis of the various stages of the overall wall stress of the previous research. The mechanical properties of materials and bonding results established the finite element scale test and C type wall hanging panels docking potting analysis model based on finite element analysis of the load. Displacement curves are consistent with the test results in the first phase, but the peak load of the former is bigger than that of the latter. Comparative analysis of the influence of different interfacial contact on the mechanical properties of wall lateral force performance. According to the results of finite element calculation and analysis of the C type wall hanging plate butt potting node force, found the end node with the middle node force difference, the end of the joint force is about two times the size of the intermediate connection.

【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】：TU311

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