Research On New Prestressed Concrete Hollow Slab

Since our country carried out reform and opening policy, civil engineering have made rapid progress. At the same time, new technology, method, materials, equipment and new technics on the field of traffic construction have been increasingly emerging, technology standard and design criterion are keeping renovating as well. Under such circumstances, our existing brige criterion which took shape in 1970s is unable to meet the need of modern traffic development which includes heavy load requirement, continuous development of transportation infrastructure, and high efficiency of construction not only on the aspect of structure pattern, design standard, but also on material adoption.This research is aimming at an overall and systemic programming towards standard. Except overcoming the problems the previous one had on application of new material, technics, technology , we have made an integrated programming of types and scale of the previous one. Thus we can on the one hand take several steps to achieve this goal and on the other hand spare enough room for future development. This will bring distinct benefit for guaranteeing the quality of project construction, propelling the development of traffic industry, promoting the speed of project construction and enhancing the benefit of social economy.This article combined the engineering experience and scientific fruit of hollow slab, and established reasonable structural thickness size of hollow slab. The article compared the differences between calculating result of conventional Three dimentional finite element analysis method and simulation under force in practice method. This article also take efforts on investigating lateral distribution coefficients of highway and arterial road hollow slab, which provided hollow slab design with guiding suggestion. we also exoatiated on research status quo of calculating and analysis of Safety barrier both at home and abroad, and analyzed the breakage types of barrier and cantileverpiston ,thus lay safety barrier of cantileverpiston according to this analysis to settle the safety hidden trouble under striking of wide cantileverpiston. We exploitured a kind of steeliness wide cantileverpiston and validated its expansive popularizing value through applied examples.