The Research Of Design Parameters And Connections Of The Steel Web Continuous Rigid Frame Bridge

PC box girder bridge with corrugated steel webs, whether with conventional or prestressed concrete box girder bridge as compared with the stiffening of the steel web PC box girder bridge flat compared to its structural performance, reduce the amount of work to shorten the duration and reduce the cost has a great advantage, but also in the construction of performance and aesthetics are also very attractive, is a worthy extension of the bridge type.With a continuous rigid frame bridge analysis corrugated steel webs is currently abroad, up from static analysis to dynamic performance and fatigue performance of research, study the depth and breadth of the bridge had been close to the traditional PC level; domestic for that type of bridge construction still in its infancy, its design parameters, mechanical properties, the connection forms of research techniques are not very mature, pending further study.In this paper, Xintan Bridge in Chongqing Qijiang prototype, with corrugated steel webs of concrete instead of ordinary web design, combined with the parameters of a bridge has been built at home and abroad to determine their shape parameters, pre-stressed configuration, connection type, etc., and through the finite element MIDAS model building analysis program checking.Through the space to establish local FEA model, corrugated steel webs continuous rigid frame bridge structure parameters such as high-span ratio, external prestressing and geometric parameters such as slab length, folding angle, thickness, angle webs were analyzed to determine their on the corrugated steel webs continuous rigid frame bridge of the law, hoping for the corrugated steel webs of continuous rigid frame bridge design reference.Flexible design is fully in accordance with the shear connection type, designed the current box-girder bridge with corrugated steel webs commonly used in stud, PBL, and submerged shear connector, using FEA software, the establishment of localized space model, the three kinds of connections parts modeling calculations to calculate the results of both tests combined research results, based on comparative analysis of three kinds of joints in the force characteristics, maximum load-bearing capacity, economic and other characteristics, by comparison, hoping to find one of the most suitable to use to such a bridge to connect the form, for box-girder bridges with corrugated steel webs provide a reference design.