Prestressed Concrete Hollow Sheet Metal, Composite Plate Test And Calculation Analysis

Assembly-integral composite floor which used pre-stressed hollow slabs or solid thin-slabs has dual merit of integral floor and assembly floor, it is a kind of floor which has good prospects. Especially the cracking on the slabs of assembly floor is diffcult to prevent and cure at the present time, and the integral floor also has many outstanding abuses, so the study on Assembly-integral composite floor has important meaning.Through analyzing and testing some pre-stressed thin-hollow slabs with the width of 80mm and 100mm, the text demonstrated the probability of the sort of slabs used as soleplate of laminated slabs. The merit of choosing the soleplate of pre-stressed thin-hollow slabs with the width of 80mm and 100mm is that we can not only avoide the difficulty of construction , transportation and hoist due to adopting the pre-stressed lamellar slabs with the width of 50mm, but also avoid the shortcomings of adopting the integral floor.In order to illuminate the relating rule of the quality and structural capability between the pre-stressed laminated slabs and the soleplate, manageing symbolic statistics, large numbers of test datas are analysed in the paper, the formulas about the relationship in cracking moment and ultimate moment between the laminated slabs and the soleplate are imitated. Accordingly, it can offer the new project method of the quality control or application .To transform the technology of assembly-integral thin rooftree into practical productivity, the text put forward to the design method of lamellar slabs and it's expressed by Fortran , the correctness of the programme have been proved by the tests. At the same time, illuminating the engineering applied questions on continuous laminated slabs such as the just section' s checking computation of the resisting crack and how to set up the temporarily support on mid-span of lamellar slabs in the first phase force.Finally,making use of Fortran programme writed in the paper,we discussed the applicability of regulating to lamellar slabs oncompartmentalizing prefabricate member and thin member by the high-width ratio, the paper also discussed the amount of temporarily support on mid-span of lamellar slabs suffering from the first phase force. Put forward to the maximum distance of the temporarily support on mid-span of lamellar slabs. This argument can be used as referrence to design or construction of the laminated slab system .