Water area tunnel formwork supporting structure and integral sliding structure of internal formwork support

Abstract

The invention belongs to the field of buildings and particularly relates to a water area tunnel formwork supporting structure and an integral sliding structure of an internal formwork support. The water area tunnel formwork supporting structure comprises a concrete bottom plate poured in advance, external formwork supports constructed at two sides of the bottom plate and used for forming external formworks, the internal formwork support constructed on the bottom plate and used for forming an internal formwork, the external formworks fixedly arranged at the inner sides of the external formwork supports, the internal formwork fixedly arranged at the outer side of the internal formwork support and split steel bars split between the external formwork supports and located above the external formworks; a connecting steel bar of which one end is pre-embedded into the bottom plate and the other end extends out of the bottom plate and is connected with each of the external formwork supports is also connected between each of the external formwork supports and the bottom plate; and a Bailey truss non-through split screw formwork supporting technology is adopted for solving the problem of easily-caused water permeability and leakage of the traditional waterproof through split bolt pull side wall, avoiding influences to the durability of a wall body due to the water permeability and leakage and improving the structural integrality on the premise of guaranteeing the workability and is a scientific, economic and environment-friendly external side wall formwork supporting technology.

Description

technical field [0001] The invention belongs to the field of construction, and in particular relates to a water tunnel formwork support structure and an integral sliding structure of an inner formwork support. Background technique [0002] After the construction of underwater tunnels, most of the structures are located underwater or in water-rich soil layers, and the requirements for the outer walls that are in direct contact with the outer sides are extremely strict. For vertical members in water areas, in order to prevent mold expansion caused by excessive lateral pressure during concrete pouring, waterproof tie bolts are often used to tie the side forms. [0003] From a theoretical analysis, the most economical and feasible solution for supporting the formwork on the outer wall of the main structure of the tunnel in the large excavation section of the water slope grading is to use waterproof through-the-center pull bolts, that is, the outer corrugated support used to supp...

AI Technical Summary

Problems solved by technology

Now the applicant adopts the formwork support system without paired tie rods, but there is still a large force on the inner mold support, many rods are used, the speed of assembly and disassembly is slow, and the labor intensity of the workers is high when adjusting the support.

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