Method for construction of continuous beam linear segment without floor stand

Abstract

The invention discloses a method for construction of a continuous grid frame 0# section or a linear section through an assembly-type bracket corbel construction device, and particularly relates to a method for construction of a continuous beam linear segment without a floor stand. The method comprises the following steps that (1) a horizontal transverse beam, a vertical supporting mechanism, a slant supporting mechanism, a tie bar, a shear-resisting plug, an embedded steel tube and an embedded steel box are manufactured; (2) the embedded steel tube and the embedded steel box are installed; (3) a corbel tripod is formed by the horizontal transverse beam, the vertical supporting mechanism and the slant supporting mechanism; (4) when the corbel tripod is installed in place, stress is borne by the shearing-resisting plug, the tie bar penetrates through the embedded steel tube and is used for tensioning the horizontal transverse beam and the two ends of the tie bar are fixed; (5) after a bracket is installed, following construction of a bottom die platform and beams is conducted; (6) connection bolts of the tripod are detached, the tripod is put down in a hanging mode and is detached into independent rods which are not assembled, then, the shearing-resistant plug and finish-rolled threaded steel pull bars are detached, and all components are transferred to the next construction point for reassembly or are transferred to a stock for storage.

Description

technical field [0001] The present invention relates to a bridge construction method, in particular to a continuous beam straight section without ground support construction method, more precisely, a continuous rigid structure (continuous beam) No. 0 section or Straight line section without ground support method construction method. Background technique [0002] When the continuous rigid frame (continuous beam) 0# section or straight line section is constructed without floor supports, the design of bracket corbels is involved. The traditional bracket scheme in the prior art is to pre-embed steel plates in the pier body, and weld and assemble on site; or directly embed section steel in the pier body and other conventional methods. The above-mentioned scheme mainly has the following disadvantages: (1) The amount of welding on site is large, the quality of the welds is high, and the control is difficult; or the pier column formwork needs to be opened, which increases the diffi...

AI Technical Summary

Problems solved by technology

The above schemes mainly have the following disadvantages: (1) Large amount of on-site welding, high quality requirements for weld seams, and difficult control; or need to open holes in the formwork of pier columns, which increases the difficulty and cost of formwork production and installation

(2) All components are connected by welding, and oxygen acetylene is used for cutting when dismantling, which is difficult to dismantle

And cutting will inevitably cause burns on the concrete surface of the pier body, leaving traces and affecting the appearance quality of the pier body

(3) After the components of the bracket are cut and removed, the size of the components in the original design becomes shorter, making it difficult to continue using the same structure, resulting in low material utilization

However, due to the limited pressure bearing capacity of the hinge pin shaft used in the hinge part, it is easy to cause safety hazards for particularly large projects and cannot be applied

Moreover, if the hinge structure is used for a long time, the pin shaft and the hinge are prone to deformation, which affects the accuracy of installation, increases the difficulty of installation, and even brings safety hazards

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