Pouring Positioning of Larger Span Beams and Replacement Method of Early Dismantled Formwork

Abstract

The invention relates to a method for changing the braces for positioning and early dismantling of formwork for larger-span beams, belonging to the technical field of larger-span beams pouring, and comprising the following operation steps: firstly, according to the beam pouring structure, a plurality of short support pipes are positioned at fixed points according to a square array. Arrangement, and then place a long support pipe on each short support pipe, and nest the pipe fittings with groove-type clamps. Then, the support frame of the limit frame is lifted to the position where it is nested with the support top plate through the cylinder limit hoop sleeved with the long support pipe, and the span beam is hoisted to cast the limit frame. Then, the platform pouring support frame is laid on the platform plate support angle frame, and the steel bar laying and one-time concrete pouring process are completed. It has the advantages of high structural strength, convenient installation, universal material selection, stable quality, short cycle and high utilization rate. The problem of difficult turnover of the support is solved. The quality stability of the integral pouring of the concrete structure is improved. On the premise of ensuring safe construction, reduce the work intensity.

Description

technical field [0001] The invention relates to the technical field of pouring large-span beams, in particular to a method for positioning large-span beams and replacing formwork early. Background technique [0002] According to the concrete strength requirements for the removal of the bottom formwork of cast-in-place structural beams in the construction code of concrete structures, for beam members with a span greater than 8m, the concrete strength grade value must reach 100% of the design before the formwork and support can be completely removed. When the span is less than 8m, the formwork and support can be removed as long as the concrete strength grade reaches 75% of the design value. If the concrete reaches 100% strength, it will inevitably lead to more formwork and supports that cannot be used in a long period of time, and the time benefit and economic benefit are poor. [0003] In the current construction process of concrete structure engineering, the cast-in-place s...

AI Technical Summary

Problems solved by technology

[0004] The invention mainly solves the deficiencies in the prior art, such as long period, difficult support member turnover, large amount of materials used and complicated installation, and provides a bracing method for pouring and positioning large-span beams and removing formwork early, which has high structural strength, The advantages of convenient installation, common material selection, stable quality, short cycle and high utilization rate solve the problem of difficult turnover of supports

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