Construction method for laying sleeper slab track structure on large-span steel truss girder bridge

Abstract

The invention discloses a construction method for laying a sleeper slab track structure on a large-span steel truss girder bridge, which comprises the following steps: S1, detecting parameters on thesteel truss girder bridge, and establishing a CP III point three-dimensional real-time coordinate prediction model; S2, positioning sleeper slabs preliminarily; S3, welding a limiting piece; S4, supporting and positioning the sleeper slabs; S5, in combination with the CP III point three-dimensional real-time coordinate prediction model, adjusting the sleeper slab line type, and setting the pre-camber; S6, arranging connecting bolts, erecting formworks on the longitudinal beams, and pouring a reinforced concrete cushion layer under the plate; and S7, laying steel rails and guard rails on the sleeper slabs, and adjusting the line type of the line finely through fasteners. According to the method, the CP III real-time coordinate prediction model is established by utilizing the detection data,the line type and the change rule of the track structure of each construction stage of the sleeper slab type track structure can be controlled and mastered, and the problem that the precision is difficult to control in the construction process is solved.

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...

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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

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