The Construction Technology And Engineering Application Of Girderless Hollow Floor Slab With High-Strength And Thin-Wall "GBF" Tube In

The cast-in-site girderless hollow floor slab with the high-strength thin-wall GBF tube in is a new structural system after the joist-girder floor slab, ribbed floor slab, unbonded prestressed floor slab. For it' s great advantages as larger interspace, big-bay and dividing the room at ease of a building , more and more people have adopted it.In the designing of the cast-in-site girderless hollow floor slab with the high-strength thin-wall GBF tube in , it is very hard for us to find a reasonable method in the present standards. Therefor to search a fairly simple and precisional enough design method is one of the key steps in the designing. By simplifying the model of floor slab with equal rigidity in vertical and horizontal direction as ordinary joist-girder structure system, the cast-in-site girderless hollow floor slab with the high-strength thin-wall GBF tube in is equal to the joist-girder structure system. Using this method the designing period will be greatly reduced, and the designers can use TBSA or PKPM programme to carry out the design.The cast-in-site girderless hollow floor slab with the high-strength thin-wall GBF tube in is a kind of floor slab by using GBF tube in the middle of the structure, compared with ordinary floor slab, there are some questions for one to pay special attention in the construction of the slab. One is the GBF tube' s correct position and floating in the pouring of concrete, the other is the related density of the concrete whether meet it' s acquired demands or not. In the construction, if we keep the special procedure of the construction, all the questions above can be solved successfully.Lower price and desirable function is the basic principle in deciding a reasonable floor slab. After ananysing several conventional types of the floor slab, such as the joist-girder floor slab, the ribbed floor slab, etc., we can draw a conclusion that the cast-in-Site girderless hollow floor slab with the high-strength thin-wall GBF tube in is one of the most economical floor slab of them , and it meets the people' s demands of more comfortable, more convenient and the most space-saving.Of course, with the vast using of the cast-in-site girderless hollow floor slab with the high-strength thin-wall GBF tube in and the increasing of experience, we can understand more about it.