薄壁方箱楼盖受力性能及设计方法研究

发布时间：2018-06-23 01:42

本文选题：薄壁方箱楼盖 + 普通实心楼盖　；参考：《辽宁工程技术大学》2015年硕士论文

【摘要】：混凝土薄壁方箱楼盖是对实心楼盖的优化,其主要由四部分组成即：钢筋混凝土上下板带、连接板带之间的混凝土肋以及板带间布列的薄壁方箱体内膜。这种楼盖具有节约材料、减轻结构自重、适用于跨度要求大、隔音保温效果好的高层建筑结构,是较为合理的结构形式。本文通过理论分析和ADINA有限元分析软件模拟操作,对混凝土薄壁方箱楼盖进行了数值模拟研究,主要内容如下：(1)依据空心楼盖设计原理及边支承空心楼盖的支承条件,确定边支承薄壁方箱楼盖的结构分析与计算方法。(2)建立10种不同跨度的薄壁方箱楼盖和实心楼盖,其跨度分别为6.3m、7.5m、8.1m、 9.3m、10.5m、11.1m、12.3m、13.5m、14.7m、15.9m,根据规范提供的公式,计算出薄壁方箱的重力和空心率,观察两种楼盖的自重差和空心率的变化趋势。(3)薄壁方箱楼盖和实心楼盖在四边固支的支撑条件下,分别承受2.0kN/m2、3.0kN/m2、 4.0kN/m2、5.0kN/m2四级竖向荷载作用,根据模拟提取薄壁方箱楼盖和普通实心楼盖的内力值和挠度值,观察两种楼盖在不同荷载作用下的内力变化趋势。(4)按照实心平板的弹性挠度公式反计算其刚度,得到在相同跨度范围内,薄壁方箱楼盖与现浇等厚的实心楼盖相比,刚度略小,但重量更轻,更适于应用在跨度要求较大的高层结构。
[Abstract]:The concrete thin-walled square box floor is the optimization of solid floor, which is composed of four parts: reinforced concrete upper and lower slabs, concrete ribs connecting with slabs, and thin-walled box lining arranged between slabs. This kind of floor has the advantages of saving material and reducing the weight of the structure. It is suitable for the high-rise building structure with large span and good effect of sound insulation and insulation. It is a more reasonable structure form. Through theoretical analysis and finite element analysis software Adina, numerical simulation of concrete thin-walled box floor is carried out in this paper. The main contents are as follows: (1) according to the design principle of hollow floor and the supporting condition of side supporting hollow floor, The structural analysis and calculation method of thin-walled box floor with side support are determined. (2) Ten kinds of thin-walled box floor and solid floor with different spans are established, the span of which is respectively 6.3mg / g 7.5mg / m, 9.3mm / 10.5m / s 11.1mtcm ~ (-1) m ~ (12.5) m ~ (-1) m ~ (13) m ~ (-1) / m ~ (13) m / ~ (13) m ~ (-1) ~ (-1) m ~ (14) m ~ (15.9m) respectively. The variation trend of the weight difference and hollow rate of the two kinds of floor is observed. (3) the thin wall box floor and the solid floor are supported by the four sides fixed support, and they are subjected to 2.0 KN / m2 3.0 KN / m 2, 4.0 KN / m 2 and 5.0 KN / m 2 vertical loads, respectively. According to the simulation, the internal force and deflection of the thin-walled box floor and the ordinary solid floor are extracted, and the variation trend of the internal force of the two floors under different loads is observed. (4) the stiffness of the slab is calculated back according to the elastic deflection formula of the solid plate. It is found that in the same span range, the thin-walled square box floor is slightly less rigid than the cast-in-place solid floor with equal thickness, but the weight is lighter, so it is more suitable to be used in high-rise structures with larger span requirements.
【学位授予单位】：辽宁工程技术大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU37

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