Span-free middle stand column steel trestle structure, pushing installation device and construction method

Abstract

According to a span-free middle stand column steel trestle structure, a pushing installation device and a construction method, the pushing installation device is used for pushing to complete construction of the steel trestle, convenience and rapidness are achieved, the construction difficulty is reduced, and the steel trestle structure adapts to the environment that a riverway planting soil layeris thin and pebbles exist at the river bottom; the steel trestle structure comprises a trestle abutment, a trestle support, a bearing beam, a longitudinal beam, a distribution beam and a bridge deck slab, the trestle support comprises two sets of trapezoidal steel pipe supports, each steel pipe support comprises two inclined rods, a main vertical rod, an auxiliary vertical rod, an upper horizontalrod and a lower horizontal rod, and the bearing beam is arranged above the upper horizontal rod in the transverse bridge direction. The longitudinal beams are arranged above the bearing beams in thelongitudinal direction, the two ends of each longitudinal beam are arranged on the table body, the ends of each longitudinal beam are limited and fixed through the back wall, the multiple distributionbeams are arranged above the longitudinal beams in the transverse bridge direction, the bridge deck slabs are arranged above the distribution beams, and the inclined rods, the main vertical rods, theauxiliary vertical rods, the horizontal rods and the transverse rods are connected in a welded mode. And the main vertical rod is connected with the bearing beam through a bracket.

Description

technical field [0001] The invention relates to the technical field of bridge trestle construction, in particular to a steel trestle structure without a mid-span column, a jacking installation device and a construction method. Background technique [0002] In the actual construction process of the steel trestle bridge, there are many unforeseen problems, such as large changes in the geological layer of the river channel, and the hard soil at the bottom of the river in some sections. The depth of the pipe pile foundation must meet the design requirements. When drilling, if the progress of the steel pipe pile is extremely slow or it is difficult to sink, the sinking cannot be forcibly applied to avoid deviation or deformation of the steel pipe. When the river channel planting soil layer is thin and there are pebbles at the bottom of the river, if the substructure is supported by steel pipe piles, bench piles are required because the steel pipe piles are shallower in the soil, ...

AI Technical Summary

Problems solved by technology

[0002] In the actual construction process of the steel trestle bridge, there are many unforeseen problems, such as large changes in the geological layer of the river channel, and the hard soil at the bottom of the river in some sections. The depth of the pipe pile foundation must meet the design requirements. When drilling, if the progress of the steel pipe pile is extremely slow or it is difficult to sink, the sinking cannot be forcibly applied to avoid deviation or deformation of the steel pipe. When the river channel planting soil layer is thin and there are pebbles at the bottom of the river, if the substructure is supported by steel pipe piles, bench piles are required because the steel pipe piles are shallower in the soil, which is expensive and has many uncontrollable factors and a long construction period. Can not achieve rapid construction, can not meet the requirements of economical and applicable, environmental protection and saving

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