A construction method for laying a sleeper slab track structure on a long-span steel truss bridge

Abstract

The invention discloses a construction method for laying a sleeper slab track structure on a long-span steel truss bridge, comprising the following steps: S1: detecting parameters on the steel truss bridge, and establishing a CPⅢ point three-dimensional real-time coordinate prediction model; S2 : Preliminary positioning of the sleeper plate; S3: Welding limit parts; S4: Support and position the sleeper plate; S5: Combined with the 3D real-time coordinate prediction model of the CPⅢ point, adjust the line shape of the sleeper plate and set the pre-camber; S6: Set up connecting bolts, erect formwork on the longitudinal beam, and pour the reinforced concrete cushion under the slab; S7: Lay steel rails and guard rails on the sleeper slab, and fine-tune the line shape through fasteners. The invention uses the detection data to establish a CPⅢ real-time coordinate prediction model, which can control and grasp the line shape and changing law of the track structure in each construction stage of laying the sleeper slab track structure, and solves the problem that the accuracy is difficult to control during the construction process.

Description

technical field [0001] The invention belongs to the technical field of construction methods for track structures on bridges, and more particularly relates to a construction method for laying a sleeper slab track structure on a long-span steel truss bridge. Background technique [0002] my country has a vast territory and complex terrain, and it is often necessary to build long-span bridges when constructing railways. The long-span steel truss structure is a structure type commonly used in modern railway bridges due to its outstanding advantages such as simple structure, convenient construction, and strong bearing capacity. At present, the commonly used track structures of railway steel truss beams at home and abroad include wooden sleeper open deck track, ballasted track, synthetic resin sleeper track and slab track. [0003] In the traditional railway track structure with wooden sleeper exposed bridge deck, the pressure of wooden sleeper rail buckle is relatively small, the...

AI Technical Summary

Problems solved by technology

[0006] In view of the above defects or improvement needs of the prior art, the present invention provides a construction method for laying a sleeper slab track structure on a long-span steel truss bridge, which solves the problem of wind speed, Environmental factors such as temperature and the influence of bridge loads at different construction stages on the line shape of the track structure make it difficult to control the accuracy of track construction

Images