A large formwork support method for constructing concrete retaining walls without anchors

Abstract

The invention discloses a large formwork supporting method for constructing an anchoring nail-free concrete retaining wall. The large formwork supporting method comprises the following steps of: carryout section construction by using a reverse construction method from top to bottom, excavating and forming on the slope surface of each section of construction area, drilling a slope protection anchor rod and grouting, wherein the step is characterized in that firstly the two end parts of a cantilever fixed to the outer end of the slope protection anchor rod and the rock-entering end of the slopeprotection anchor rod are integrally welded by using tie bars to form a triangular structure; afterwards, arranging L-shaped counter-pulled lead screws at the two end sockets of the cantilever, wherein the counter-pulled lead screws are used for penetrating counter-pulled holes correspondingly formed in a large formwork; then supporting the large formwork after the concrete retaining wall is bound by steel bars, and fastening the large formwork by using the L-shaped counter-pulled lead screws; and finally, arranging a platform supporting frame suspension and a platform supporting frame on thelarge formwork after the large formwork is installed and fastened, overspreading springboards on the platform supporting frame and installing round steel guardrails, and diagonally bracing the largeformwork by using steel pipes or profile steel so as to reinforce the stability of the large formwork.

Description

technical field [0001] The invention belongs to the field of concrete retaining walls, and in particular relates to a large template support method for constructing concrete retaining walls without anchors. Background technique [0002] In the construction of traditional concrete retaining walls, the formwork support structure is usually assembled with wooden formwork or small steel formwork, and the drawing rod is reinforced by adding auxiliary anchors as the formwork to prevent the single-sided formwork from being damaged when the concrete is poured. Concrete lateral pressure is too large to produce violent mold accidents. In this construction method, due to the large number of formwork assembly blocks and the low rigidity of the formwork, the appearance quality and flatness effect of the concrete after forming are generally difficult to meet the requirements of fair-faced concrete, and a large area of ​​grinding is required, and due to the addition of a large number of au...

AI Technical Summary

Problems solved by technology

In this construction method, due to the large number of formwork assembly blocks and the low rigidity of the formwork, the appearance quality and flatness effect of the concrete after forming are generally difficult to meet the requirements of fair-faced concrete, and a large area of ​​grinding is required, and due to the addition of a large number of auxiliary Anchor nails, the number of turnover of the formwork is small, which greatly increases the construction cost

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