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Continuous construction method for tunnel emergency parking strip cast-in-situ lining by quickly disassembling and assembling trolley

A technology of emergency parking and trolley, which is applied in the direction of tunnel lining, tunnel, shaft lining, etc., can solve the problems of time-consuming and labor-consuming, and achieve the effect of overcoming inaccurate positioning, stable formwork, and convenient and quick disassembly

Inactive Publication Date: 2017-02-22
GUANGDONG PROVINCE COMM PLANNING & DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the above method of construction, the formwork trolley needs to be disassembled at each widening section of the emergency parking belt in the tunnel, and then transferred to the next widening section by car for assembly, which is labor-intensive and time-consuming

Method used

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  • Continuous construction method for tunnel emergency parking strip cast-in-situ lining by quickly disassembling and assembling trolley
  • Continuous construction method for tunnel emergency parking strip cast-in-situ lining by quickly disassembling and assembling trolley
  • Continuous construction method for tunnel emergency parking strip cast-in-situ lining by quickly disassembling and assembling trolley

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Effect test

Embodiment Construction

[0033] The trolley used for the cast-in-place lining of the emergency parking zone of the tunnel of the present invention is as follows: figure 1 , figure 2 As shown, it includes upper formwork assembly 1, bracket column 2, horizontal connecting rod 3, bracket beam 5, door frame beam 7 and other components. The trolley is composed of two symmetrical half trolleys. A complete trolley is connected by the butt pins and butt bolts provided at the corresponding positions of the upper formwork assembly 1, the bracket beam 5 and the mast beam 7.

[0034] When the bracket column 2 and the horizontal connecting rod 3 are removed, the butt pins and butt bolts set at the corresponding positions of the upper formwork assembly 1, the bracket beam 5 and the door frame beam 7 are removed at the same time, and after the upper formwork assembly 1 is rotated downward, It is also possible to split the entire trolley into two half-width trolleys.

[0035] In the present invention, a continuous...

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Abstract

The invention discloses a continuous construction method for a tunnel emergency parking strip cast-in-situ lining by quickly disassembling and assembling a trolley. The continuous construction method comprises the steps that (1) the trolley is assembled according to the design size of a tunnel emergency parking strip; (2) after preliminary construction of the tunnel emergency parking strip is completed, square timber and steel rails are laid on the tunnel emergency parking strip; (3) the whole trolley is disassembled into two semi-range trolley bodies; (4) the two semi-range trolley bodies travel along the steel rails in tandem; (5) the two semi-range trolley bodies are reassembled into the integrated trolley; (6) the tunnel emergency parking strip is subjected to cast-in-situ secondary lining concrete; and (7) after the poured concrete meets the design strength requirement, the integrated trolley is separate into the two semi-range trolley bodies again, and cyclic operation from the step (3) to the step (6) is repeated till secondary lining construction of the tunnel emergency parking strip is completed. By means of the method, the time for disassembling and transferring the formwork trolley can be saved, the construction cost is reduced, and the engineering quality is improved.

Description

technical field [0001] The invention relates to a construction method for a road and bridge tunnel lining, in particular to a construction method for a cast-in-situ lining structure of a tunnel emergency parking zone. Background technique [0002] With the development of expressways to mountainous areas, many long tunnels have appeared, and the number of emergency parking belts has also increased accordingly. Because the section of the tunnel emergency stop zone is larger than that of the normal section, the investment per meter of the secondary lining construction is much higher than that of the normal section lining, and the work efficiency is lower. It often becomes the last process of tunnel construction and affects the total construction period. In terms of construction quality control, there are more common defects in the quality of concrete with the second lining in emergency parking, such as misalignment, seams, concrete running deformation, large surface flatness, e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/10
CPCE21D11/10E21D11/102
Inventor 温玉辉刘二强聂玉文梁淦波李国安王强
Owner GUANGDONG PROVINCE COMM PLANNING & DESIGN INST
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