A formwork system and formwork pouring and tamping construction method suitable for large-scale deep groove pit and steep slope surface cushion

Abstract

A formwork support system suitable for cushions on steep slopes of large-scale deep pits, which is an inverted square platform inner formwork composed of cushions at the bottom of the pit, anti-floating steel bars, templates and steel pipe support frames; the bottom cushion of the pit The layer is located at the bottom of the pit, and the anti-floating steel bars are pre-buried at the bottom of the pit and integrated with the cushion layer at the bottom of the pit; Fastener-type steel pipes are set up in the shape of an inverted square truss, the steel pipe support frame is connected with the anti-floating steel bars, the template is an inverted trapezoid, installed on the outside of the four inverted trapezoidal slopes formed by the steel pipe support frame, and the bottom edge is fixed on the bottom pad of the pit On the layer, there is a reinforcement ring composed of concrete blocks on the cushion at the bottom of the pit and around the outside of the formwork; the formwork pouring and tamping construction method of using this formwork system for the cushion on the steep slope surface of a large deep pit has changed the traditional large deep pit. The construction method of the cushion layer on the steep slope of the trench pit is scientific, the overall construction progress is fast, and the quality is good.

Description

technical field [0001] The invention relates to a basement structure cushion construction method and a formwork support system, in particular to a formwork support system and a formwork pouring and tamping construction method suitable for cushion layers on steep slope surfaces of large deep groove pits. Background technique [0002] The basement structural cushion is an important construction link, and its construction quality has a great impact on the building structure and the subsequent basement floor waterproofing construction. [0003] In traditional construction, due to the fluidity and lack of blocking of the cushion concrete, in order to ensure that the cushion on the pit wall will not cause uneven thickness of the cushion and concrete pouring due to the flow of concrete under the action of gravity during construction. It is difficult to tamp, and it is usually necessary to set the pit walls of large pits such as elevator shaft pits and pile cap pits to a gentle slop...

AI Technical Summary

Problems solved by technology

[0009] The object of the present invention is to provide a kind of construction with less excavation of earth and stone, fast construction speed and good quality "a formwork system and formwork pouring and tamping construction method suitable for large-scale deep groove pit steep slope surface cushion" , to overcome the deficiencies of traditional construction methods, and solve the problem of difficult construction of large deep pits and steep cushions

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