【作者】 汪幼林；

【导师】 吴方伯；

【作者基本信息】 湖南大学 ， 结构工程， 2006， 硕士

【摘要】 装配式密肋空心楼盖由预制空心箱体和现浇密肋梁组成，适用于大开间建筑物。它可以减小楼盖结构层厚度，增加楼层净高，节省吊顶；而且它采用装配式的空心箱体，减轻了楼盖自重，楼盖空心率高；它只需支肋梁的底模，浇肋梁混凝土，施工简便、进度快，同时也改善了楼盖的抗裂性能，并为楼盖采用高强混凝土创造了技术条件。 本文对装配式密肋空心楼盖进行了试验研究和有限元分析，提出了这种楼盖的实用设计方法和挠度计算方法，同时也解决了这种楼盖在工程中常遇到的一些问题，并对楼盖的经济性能进行了分析研究。本文共分五章： 第一章介绍了无梁楼盖到空心楼盖的演变过程，并介绍了装配式密肋空心楼盖的结构形式、性能、施工工艺等。 第二章通过装配式密肋空心楼盖足尺模型的静水加载试验，得出了试验模型的荷载一挠度曲线、裂缝分布，并测试了这种楼盖的抗渗性能。 第三章通过有限元软件Ansys分析试验模型，并与同尺寸的平板无梁楼盖有限元模型、密肋楼盖有限元模型、交叉梁有限元模型内力、挠度计算结果进行比较。同时在ansys的后处理中通过“面操作”得出实体单元模型的内力，进而分析了装配式密肋空心楼盖中空心箱体的底板和盖板对楼盖密肋梁弯矩分布的影响规律。 第四章提出了装配式密肋空心楼盖的设计方法和挠度计算方法，对边梁和梁柱节点的构造提出了建议，分析了装配式密肋空心楼盖的适用高度、边梁与肋梁的弯扭分配、楼盖的抗裂性能等工程中常遇到的问题。 第五章对不同跨度、荷载下的装配式密肋空心楼盖和普通梁板结构进行了经济比较，并分析了密肋梁宽、楼盖厚度对装配式密肋空心楼盖经济性能的影响，为装配式密肋空心楼盖的工程应用提供参考。更多还原

【Abstract】 The fabricated hollow-ribbed floor is composed by space beams and the prefabricated concrete box fillers, it adapts to the large column span and bay width floor structures, it can reduce the thickness of the slab, increase the net height of the floor structures, economize the ceiling; and because the use of fabricated boxes the structural weight is lower and the hollow ratio is higher.The fabricated hollow-ribbed floor only need to set the molding board and cast the space beams, so the construction is easier and quicker, it also ameliorates the crack resistance of the floor and create technical conditions for the use of strong concrete in the floor.This paper made an experimental investigation and finite element analysis on the fabricated hollow-ribbed floor, put forward a practical mechanism of deflection and design methods of this kind of floor, it also solved some problems this kind of floor often meets during the construction, and did some economic analysis on this kind of floor. This article is totally divided into five chapters, as follows:In the first chapter, we introduced the developing process of mushroom floor to hollow floor and the structure formation, capability, construction techniques of the fabricated hollow-ribbed floor.In the second chapter, we got the load-displace curve,fracture distribution of the test modal by the test of a 9m×9m size fabricated hollow-ribbed floor model, and the impermeability of this kind floor was tested in the experiment.In the third chapter, we made finite element analysis on the testing model by the finite element program ansys, and compared the internal force, deflection with the finite element modal of mushroom floor,joist floor and crossing beam system with the same size. We got the internal force by doing "surface operation "on the solid element modal,and then analyzed the rules of the box filler’s supporting plate and top plate which in the fabricated hollow-ribbed floor that impact on the ribbed beams’ bending moment distribution.In the fourth chapter, we put forward the practical mechanism of deflection and design methods of this kind of floor, contributed suggestions for the fabric of edge beam and beam column joint, and also solved some problems this kind of floor often meets during the construction, such as the application height, moment distribution between edge beam and ribbed beam, crack resistance of the fabricated hollow-ribbed更多还原