Abstract
This design is the structural design of a 23.5m hollow slab bridge in quanzhou. The design shall complete the writing of calculation specifications, CAD drawing and Midas calculation.
This paper is the part of the calculation book, including the calculation of the upper structure and the lower structure of the bridge. The calculation of superstructure includes structural form and dimension. Calculation of geometric characteristics of wool section; Internal force calculation; Estimation and arrangement of prestressed reinforcement; Calculation of geometric characteristics of converted sections; Calculation of hollow slab strength; Calculation of prestress loss; Cross section stress checking calculation of hollow slab at the prestressed stage; Stress calculation of hollow slab section in service stage; Check the deformation of hollow plate. The calculation of the lower structure includes the calculation of cover beam. Pier calculation; Calculation of pile foundation.
The bridge designed this time is a three-span bridge with a single span of 23.5m. The total length of the bridge deck is 70.5m. It is an assembly prestressed hollow slab bridge. The bridge is a separated two-way four-lane highway with a 1-m-wide separation zone in the middle. The two sides are of the same structure with a width of 10.1m. Because the structure is symmetrical, only half of the bridge should be designed. In this design, two 1.77m wide side plates and six 1.14m wide middle plates are used to form the upper structure of the half-width bridge. The lower structure adopts double-column piers and bored piles.
