Walking type trackless triangular hanging basket and construction method thereof

Abstract

The invention discloses a triangular main truss of a walking type trackless triangular hanging basket, which comprises a main longitudinal beam, wherein the main longitudinal beam is horizontally arranged, an upright post, wherein the bottom end of the upright post is connected with the main longitudinal beam, two inclined pull rods, wherein the bottom ends of the two inclined pull rods are respectively connected with the two ends of the main longitudinal beam and the top ends of the two inclined pull rods are connected with the top end of the upright post. The parts of the main longitudinal beams, which are positioned at the two sides of the upright post, are horizontally inclined upwards in a certain angle centering the intersection point with the upright post. Pre-stress is applied to the triangular main truss before concrete is poured, so that the inelastic deformation of the triangular main truss which is a main bearing structure is eliminated. When the construction load is applied to the triangular hanging basket, the stress structures of the main body of the triangular hanging basket are all within elastic deformation, so that the descent of the triangular hanging basket inthe concrete pouring process can be effectively reduced, a maximum deformation value of the whole triangular hanging basket is controlled at a specified maximum limited value of 20mm and the line shape of a beam body is controlled, so under the condition that the bearing capacity of the components are met, lighter materials can be selected to reduce the dead weight of the structure and save the construction cost.

Description

technical field [0001] The invention relates to the field of bridge construction, in particular to a walking-type trackless triangular hanging basket and a construction method. Background technique [0002] The construction method of hanging basket cantilever pouring is generally divided into three parts: pouring of box girder support of block "0" on the pier top, mid-span hanging basket cantilever pouring and side span support pouring. There are many types of hanging baskets. Common hanging baskets include diamond hanging baskets, triangular hanging baskets, truss hanging baskets, cable hanging baskets, etc. The hanging baskets assembled by universal rods and the hanging baskets assembled by Bailey truss It belongs to the truss hanging basket. For the triangular hanging basket, the rod structure is simple, easy to manufacture, easy to install, travel, and disassemble; the deformation is small, the structure is light in weight, the operating space of the front cantilever be...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the defects existing in the prior art, the object of the present invention is to provide a walking-type trackless triangular hanging basket and a construction method, so as to solve the problem that the subsidence deflection of the hanging basket for large-span continuous beam cantilevered construction affects the line shape of the beam body

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