钢筋桁架混凝土楼板受力性能分析

发布时间：2018-06-21 11:34

本文选题：钢筋桁架混凝土楼板 + 施工阶段　；参考：《郑州大学》2015年硕士论文

【摘要】：钢筋桁架混凝土楼板是一种最近几年才出现的组合楼板形式,具有施工方便、缩短施工工期和适用范围广等优点,在国内已有较多的应用,但目前对这种楼板的认识还是与普通钢筋混凝土一样,对它受力性能的分析研究还比较少,这也就影响了钢筋桁架混凝土楼板的推广使用。为了研究钢筋桁架混凝土楼板的受力性能,本文利用有限元分析软件,对钢筋桁架混凝土楼板进行建模,模拟了在受静力作用下的性能,对底部压型钢板对楼板的作用进行了分析计算。本文对比了在施工阶段分别不考虑底部压型钢板、考虑底部压型钢板以及考虑压型钢板有效截面的作用。通过考虑底部压型钢板的有效宽度,研究钢筋桁架混凝土楼板的刚度公式。论文还研究了施工时钢筋桁架混凝土楼板有无支撑的受力性能,通过对比有无支撑施工工况,得到在挠度控制条件下,钢筋桁架混凝土楼板的最大适用跨度。论文对钢筋桁架混凝土楼板使用阶段分别考虑无底部压型钢板、底部压型钢板完全受力、考虑底部压型钢板有效截面以及在界面焊接节点抗剪承载力影响下的受力性能,给出了正截面受弯承载力公式,并通过有限元软件建模分析,与推导出的理论计算公式对比分析,给出计算钢筋桁架混凝土楼板正截面受弯承载力的推荐公式。根据有效惯性矩法,计算钢筋桁架混凝土楼板在使用阶段的刚度,并结合有限元软件计算结果,提出了刚度计算公式。本文还建立了无底部压型钢板、考虑底部压型钢板拼接与不考虑底部压型钢板拼接的钢筋桁架混凝土双向板使用阶段模型,对比分析计算结果,得到底部压型钢板对钢筋桁架混凝土双向板使用阶段受力的影响规律。
[Abstract]:The reinforced truss concrete floor slab is a kind of composite floor form that appeared in recent years. It has the advantages of convenient construction, short construction period and wide application scope, and has been widely used in China. However, at present, the understanding of this kind of floor is the same as that of ordinary reinforced concrete, and the analysis and research on its mechanical performance is still relatively few, which also affects the popularization and use of reinforced truss concrete floor. In order to study the mechanical behavior of reinforced truss concrete floor slab, the finite element analysis software is used to model the reinforced truss concrete floor slab, and the static behavior of reinforced truss concrete floor slab is simulated. The effect of bottom profiled steel plate on floor is analyzed and calculated. In this paper, the effect of considering the effective section of the bottom profiled steel plate and the bottom profiled steel plate is compared respectively in the construction stage without the consideration of the bottom profiled steel plate and the consideration of the bottom profiled steel plate. The stiffness formula of reinforced truss concrete floor slab is studied by considering the effective width of bottom profiled steel plate. The paper also studies the mechanical behavior of reinforced truss concrete floor with or without support during construction. By comparing the construction conditions with or without bracing, the maximum applicable span of reinforced truss concrete floor is obtained under the condition of deflection control. In the use of reinforced truss concrete floor, the full force is taken into account without bottom profiled steel plate and bottom profiled steel plate, the effective section of bottom profiled steel plate and the mechanical behavior under the influence of shear bearing capacity of interface welded joints are considered in this paper. The formula of flexural bearing capacity of normal section is given, and the formula of flexural bearing capacity of normal section of reinforced truss concrete floor slab is given by means of finite element modeling and analysis, and compared with the theoretical calculation formula derived from the formula, and the recommended formula for calculating flexural bearing capacity of normal section of reinforced truss concrete floor slab is given. According to the effective moment of inertia method, the stiffness of reinforced truss concrete floor slab in service stage is calculated, and the stiffness calculation formula is put forward in combination with the results of finite element software. In this paper, the model of concrete two-way slab without bottom profiled steel plate is established, and the model of concrete two-way slab without bottom profiled steel plate splicing and without considering bottom profiled steel plate is established, and the calculation results are compared and analyzed. The influence of bottom profiled steel plate on the stress of reinforced truss concrete bidirectional slab is obtained.
【学位授予单位】：郑州大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU398

【引证文献】