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Open trench tunnel main structure tall side wall unilateral vertical mold and construction process thereof

A main structure, open-cut tunnel technology, applied in infrastructure engineering, underwater structures, artificial islands, etc., can solve the problems of difficult to guarantee construction quality, large demolition workload, long erection period, etc., to improve construction efficiency and The effect of engineering progress, high stability of the support, and improvement of construction accuracy

Inactive Publication Date: 2016-03-16
CHINA RAILWAY SHISIJU GROUP CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Under the premise that the engineering land is becoming increasingly tight, the foundation pit engineering is developing in the direction of deep, large, and close, followed by the form of vertical support being applied to construction more and more frequently. Due to the narrow operating space, the obvious The construction of the side wall of the main structure of the excavation tunnel cannot be realized by using double-sided formwork, and must use single-side formwork
[0003] The traditional single-side formwork technology uses steel pipes to build bent frames as the formwork support system. Through a series of engineering applications in recent years, it can be found that it has major disadvantages: ① At present, China's infrastructure construction has short construction periods and heavy engineering tasks. , The characteristics of the long construction line, while the traditional one-sided vertical formwork process uses a large number of steel pipes, a long erection period, and a large disassembly workload, which seriously affects the construction efficiency of the side wall, and it is difficult to meet the actual requirements of the project for the construction period; ② Due to The volume of the side wall is large, and the lateral pressure and buoyancy force are extremely large during the concrete pouring process. However, the single-side vertical formwork technology of the traditional steel pipe bent frame has a low height of the primary formwork, and the phenomenon of formwork floating and expansion is very easy to occur, resulting in the concrete wall. Surface flatness, verticality, etc. have defects, which affect the quality and image of the project; ③Affected by its own structural form, the traditional single-side vertical formwork technology needs to pull bolts, and the application of the pull bolts will affect the side wall of the main structure. The waterproof performance has a great impact, causing waterproof hidden dangers, and the construction quality is difficult to guarantee
For the wall formwork with a higher height, the traditional single-side formwork technology is more difficult to construct

Method used

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  • Open trench tunnel main structure tall side wall unilateral vertical mold and construction process thereof
  • Open trench tunnel main structure tall side wall unilateral vertical mold and construction process thereof
  • Open trench tunnel main structure tall side wall unilateral vertical mold and construction process thereof

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Embodiment Construction

[0015] The main structure of the open-cut tunnel is one-sided vertical formwork with tall side walls, such as figure 1 As shown, the shaped steel triangular truss 1 including a right-angled triangle, the bottom side of the shaped steel triangular truss 1 is obliquely provided with embedded anchor bolts 2, and several pressure beam channel steels 9 are arranged on the shaped steel triangular truss 1, and the right-angled sides of the shaped steel triangular truss 1 The formwork 7 is installed on the outside of the long side, and several connection devices are arranged between the steel triangular truss 1 and the formwork 7. One end of the connection device is located inside the formwork 7 on one side of the steel triangle truss 1, and the hypotenuse of the steel triangle truss 1 is installed along the length direction. The steel pipes 10 are connected horizontally, and the operating platform 4 is installed on the top of the shaped steel triangular truss 1 . This structure adopt...

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PUM

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Abstract

The invention discloses an open trench tunnel main structure tall side wall unilateral vertical mold and a construction process thereof. The open trench tunnel main structure tall side wall unilateral vertical mold comprises a right triangle-shaped profile steel triangular truss; an embedded foundation bolt is inclined at one side of the bottom of the profile steel triangular truss; multiple pressing beam channel steels are arranged on the profile steel triangular truss; a template is mounted at the outer side of the long edge of the right-angled edge of the profile steel triangular truss; multiple connecting devices are arranged between the profile steel triangular truss and the template; one ends of the connecting devices are positioned in the template at one side of the profile steel triangular truss; a transverse connecting steel pipe is mounted on the inclined edge of the profile steel triangular truss in the length direction; and an operation platform is mounted at the upper part of the profile steel triangular truss. The profile steel triangular truss and an embedded part are used as support systems of the template; the unilateral mold standing can be performed; a bracket is high in stability and excellent in water resistance; the steel pipe use level is low; the disassembly is convenient; enough sidesway and buoyancy resistance can be provided to the tunnel tall side wall template; the template construction precision is improved; and the construction efficiency and the engineering progress are greatly improved.

Description

technical field [0001] The invention relates to a side wall of a main structure of an open-cut tunnel and a construction process thereof, in particular to a single-side vertical formwork of a large side wall of the main structure of an open-cut tunnel and a construction process thereof. Background technique [0002] Under the premise that the engineering land is becoming increasingly tight, the foundation pit engineering is developing in the direction of deep, large, and close, followed by the form of vertical support being applied to construction more and more frequently. Due to the narrow operating space, the obvious The construction of the side wall of the main structure of the excavation tunnel cannot be realized by using double-sided formwork, and must use single-side formwork. [0003] The traditional single-side formwork technology uses steel pipes to build bent frames as the formwork support system. Through a series of engineering applications in recent years, it can...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D29/05
CPCE02D29/05E02D2250/0023
Inventor 蒋树磊李树忱李占先杨世锋赵世森师文明康熙杨领航
Owner CHINA RAILWAY SHISIJU GROUP CORP
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