Mounting and reinforcing structure of plug formwork of steel formwork trolley of power generating tunnel

Abstract

The invention discloses a mounting and reinforcing structure of a plug formwork of a steel formwork trolley of a power generating tunnel. A plurality of sections of U-steel are arranged on the outer side of the plug formwork along the radian of the steel formwork trolley in the circular direction, and each section of U-steel is fixed to a steel formwork trolley panel through a steel bar; long wooden wedges are arranged between the U-steel and the plug formwork, and each steel bar at least comprises a first steel bar and a second steel bar; the first steel bars encircle the U-steel from one side, and the first steel bars and the steel formwork trolley panel are welded; and the second steel bars penetrate through the steel formwork trolley panel to be welded to the back faces of the U-steel.According to the mounting and reinforcing structure of the plug formwork of the steel formwork trolley of the power generating tunnel, formwork erecting of a plug of the secondary lining steel formwork trolley is fast, simple and stable, operation for operators is facilitated, the construction progress is accelerated, operation personnel is reduced, the risk is reduced, the construction time is shortened, and the mounting and reinforcing quality is obviously improved.

Description

technical field [0001] The invention relates to the technical field of steel mold trolley construction for power generation tunnels, in particular to a plug template installation and reinforcement structure for power generation tunnel steel mold trolleys. Background technique [0002] During the concrete pouring process of the second lining of the tunnel body project of the power generation tunnel, one side of the two ends of the steel formwork trolley is in contact with the formed concrete, and no plugging is required. Since the thickness of the secondary lining of the tunnel changes with the grade of the surrounding rock, and the base surface of the surrounding rock is uneven due to the drilling and blasting method, the plug formwork cannot be made into a fixed steel formwork. [0003] In the prior art, a combination of wood boards and steel pipes is usually used as the plug at the end of the trolley. Due to insufficient reinforcement technology, there are the following pr...

AI Technical Summary

Problems solved by technology

[0004] 1. Long construction time: due to the change of the tunnel section, the steel pipes and formwork of the obliquely supporting scaffolding cannot be recycled. , leading to the position deviation of the waterstop, embedded parts, etc., requiring multiple treatments, and the construction time is long

[0005] 2. Large waste of turnover materials: The tunnel excavation section is affected by various factors, and the thickness of the second lining of each section in each cycle is not uniform, requiring various lengths of wood boards; the removed plug formwork is more damaged, requiring a large number of wood boards to carry out Turnover, the utilization rate of turnover materials is low, and the construction cost increases

[0006] 3. High safety risk: plug formwork reinforcement, formwork inspection during concrete pouring, several formwork workers are required in each cycle, and each formwork worker takes an average of 3-6 hours, requiring more personnel, long continuous working hours, and high safety risks

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