Tunnel corrugated steel plate reinforcing device and method

Abstract

The invention discloses a tunnel corrugated steel plate reinforcing device and method. The tunnel corrugated steel plate reinforcing device comprises protective fixing frames and a corrugated steel plate; a corrugated steel plate is installed in a channel formed between the two protective fixing frames, and two ends of the corrugated steel plate in a corrugated extending direction are fixed on theprotective fixing frames. According to the invention, the protection fixing frames are arranged, to be capable of protecting and reinforcing lining in advance, the possible safety problems of fallingand the like of the lining before the construction of the corrugated steel plate is completed are solved; secondly, after the protective fixing frames are installed, parallel construction can be conducted on multiple working faces, the problem that according to a traditional corrugated steel plate installation method, serial construction needs to be conducted is solved, the construction speed isincreased by multiple times, the construction period is shortened, and the risk of tunnel lining accidents in the construction process is reduced; and thirdly, the protective fixing frame further enhances the safety of the lining and improves the capability of resisting water pressure and unbalanced pressure.

Description

technical field [0001] The invention relates to a tunnel corrugated steel plate reinforcement device and a reinforcement method, and belongs to the technical field of tunnel reinforcement construction. Background technique [0002] my country is a mountainous country, so the number of tunnels is huge. By the end of 2017, China Railway had put into operation 14,547 railway tunnels, with a total length of 15,326 kilometers. By the end of 2018, there were 17,738 road tunnels in China, with a total length of 17,236 kilometers. With the continuous growth of the tunnel operation time, the hidden quality risks of the tunnel lining gradually appear under the interaction of various external environmental factors, resulting in structural defects of the tunnel lining, and the structural defects of the tunnel directly lead to the bearing capacity of the tunnel lining structure. This will lead to structural deformation and even catastrophic consequences such as fracture and collapse of...

AI Technical Summary

Problems solved by technology

[0006]1. For tunnels with serious defects that directly affect operational safety, temporary steel arches are installed on site, but the current corrugated steel lining reinforcement method requires first Remove the reinforced steel arch and then install the corrugated steel plate. During this process, there is a safety risk that the lining will fall off again, and this risk will always exist before the corrugated steel plate is not grouted and fully anchored. It can last for one month or even several months, and the construction cannot be solved. Safety issues in tunnel lining during

[0007]2. The traditional installation method of corrugated board is fixed by the support of the arch foot and the connection of the lining before the complete construction is completed, but at this time the lining is not thick enough Or cracking, it is very likely that during the construction process, due to the change of the wind pressure of the train, under the action of the corrugated plate, the damage of the lining will be accelerated, causing a safety risk

[0008]3. Due to the short construction time of the operating railway, the daily construction time is 60-120 minutes. The current installation method of corrugated steel plates is installed from both sides upwards, one by one using its own The lap joint completes the whole ring forming work, and the construction speed is very slow

Due to the need for overlapping between the rings, multiple working faces cannot be constructed at the same time

[0009]4. In the actual construction process of the tunnel lining, the curve of the inner wall surface is quite different from the theoretical one, and there are slopes and cambers in the tunnel. In the current installation method , install from both sides to the vault in the hoop direction, and install from one section to the other in the longitudinal direction, and each ring must be closely connected, so that the latter ring must adapt to the installation of the previous ring, and finally all the errors are accumulated in Together, and basically accumulated at the top of the vault, the installation position of the last ring does not meet the requirements, and the corrugated steel plate even completely invades the train running space or the distance from the catenary is too small

This is also a technical problem that the current method is difficult to overcome, causing a big problem in the application of corrugated steel plates.

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