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A secondary lining trolley for large-span variable-section tunnels and its construction method

A technology of secondary lining and construction method, applied in tunnel lining, tunnel, wellbore lining, etc., can solve the problems of large consumption of manpower and material resources, long installation time, high safety risk, and achieve labor saving, easy duplication and simple production process. Effect

Active Publication Date: 2018-09-21
THE FIFTH ENGEERING OF CHINA RAILWAY 5TH BUREAU GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a secondary lining trolley for large-span variable-section tunnels and its construction method, which overcomes the shortcomings of the existing technical solutions, such as large consumption of manpower and material resources, long installation time, and high safety risks, and achieves a Multiple vehicles can be used to improve tunnel lining construction efficiency, reduce costs and reduce safety risks

Method used

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  • A secondary lining trolley for large-span variable-section tunnels and its construction method
  • A secondary lining trolley for large-span variable-section tunnels and its construction method
  • A secondary lining trolley for large-span variable-section tunnels and its construction method

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Embodiment 1

[0026] Embodiment 1: as Figure 1-Figure 6 As shown, a secondary lining trolley for a large-span variable-section tunnel includes a main gantry 1, a secondary gantry 2, a formwork beam 3, and a formwork column 4. The secondary gantry 2 is installed next to the main gantry 2, and The frame 2 forms a horizontal E-shaped structure, the opening direction of the horizontal E-shaped structure is downward, and its top is connected to the formwork beam 3 through the upper longitudinal beam 5, and the formwork column 4 is set on the formwork beam 3, and the upper end of the formwork column 4 is against the lining section The template 10 at the top, the main gantry 1 and the secondary gantry 2 are placed on three steel rails 9, a breaking node 1 is set on the beam 2-1 of the secondary gantry 2, and a detachable connecting plate 2-2 is set at the breaking node. 1-1, formwork column 4 and formwork beam 3 respectively set breaking node 2 and breaking node 3, respectively set detachable con...

Embodiment 2

[0029] Embodiment 2: A construction method for the secondary lining trolley of a large-span variable-section tunnel. The implementation steps of the method are as follows:

[0030] (1) Based on the design of the largest section, analyze the structural dimensions of other sections, and set the double gantry structure of the main gantry 1 and the secondary gantry 2 on the secondary lining trolley. The beam 2-1 of the gantry 2, the formwork column 4 and the formwork beam 3 are respectively provided with breaking nodes, and the first connecting plate 2-1-1, the second connecting plate 4-1 and the third connecting plate 3-1 are arranged at the breaking nodes;

[0031] (2) When the lining section changes, remove all formwork 10 on the top of the lining section;

[0032] (3) Remove the redundant parts of formwork column 4 and formwork beam 3 corresponding to the breaking node, and adjust the connection positions of formwork column 4 and formwork beam 3, formwork beam 3 and upper long...

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Abstract

The invention discloses a long-span variable section tunnel secondary lining trolley and a construction method thereof. The trolley comprises a main portal frame and a secondary portal frame, and the secondary portal frame and the main portal frame form a horizontal type E-shaped structure. The top of the secondary portal frame is connected to a formwork beam through upper longitudinal girders, formwork columns are arranged on the formwork beam, and the upper ends of the formwork columns abut against a formwork at the top of a lining section. The main portal frame and the secondary portal frame are placed on three steel rails, beams of the secondary portal frame, the formwork columns and the formwork beam are each provided with a disjunction joint, a connecting plate is arranged detachably at each disjunction joint, and traction driving wheels are arranged on the two outer steel rails. When the lining section changes, the transformation of the section of the trolley can be completed only through a small amount of disassembly of the formwork, the formwork columns and the secondary portal frame, the time for putting the trolley in place is greatly reduced, the construction safety risk is lowered and a lot of manpower is saved; by arranging the disjunction joints, the time for field remanufacturing is reduced, the transformation of the trolley is accelerated, and the construction safety risk is lowered.

Description

technical field [0001] The invention relates to a construction method of a secondary lining trolley for a large-section and variable-section tunnel, in particular to a secondary lining trolley with a large cross-section, a variable cross-section and a sudden change mode in the secondary lining construction of the tunnel and a construction method thereof. Background technique [0002] Due to the large section span and low flattening ratio of large-section variable-section tunnels, it is required to close the secondary lining into a ring as soon as possible after excavation to reduce safety risks. This requires the secondary lining trolley to be installed quickly and with high work efficiency. The traditional secondary lining trolley cannot be applied to multiple different sections. If each section is equipped with a trolley, the construction cost of the trolley will be very high, and the installation time of the trolley will increase, which will increase safety risks and affec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/10
CPCE21D11/102
Inventor 申剑陈德斌夏真荣肖承倚吴秀雄王开荣张健朱东平钟勇刘云周崇连蒋志权张伯湘徐文滕建毛陈立家颜桢伟
Owner THE FIFTH ENGEERING OF CHINA RAILWAY 5TH BUREAU GROUP
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