Installing structure for shield arrival temporary waterproof device without main structure and construction method of installing structure

A technology of main structure and waterproof device, applied in vertical shaft equipment, earthwork drilling, wellbore lining, etc., can solve the problems of prolonging construction progress and construction period, prolonging process conversion time, affecting construction efficiency, etc., so as to shorten construction progress and construction efficiency. The effect of cycle, saving process conversion time and improving construction efficiency

Active Publication Date: 2017-04-26
CHINA RAILWAY TUNNEL GROUP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few domestic researches on this aspect, and it is impossible to solve the shield machine stoppage caused by the late construction of the station structure during

Method used

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  • Installing structure for shield arrival temporary waterproof device without main structure and construction method of installing structure
  • Installing structure for shield arrival temporary waterproof device without main structure and construction method of installing structure
  • Installing structure for shield arrival temporary waterproof device without main structure and construction method of installing structure

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0036] Example one:

[0037] see Figure 1-2 , in the figure, the shield of the present invention reaches the installation structure of the temporary waterproof device without the main structure, including the connecting steel ring 1, the double-row steel bar 2, the steel mesh sheet 3, and the concrete 5.

[0038] Among them, the connecting steel ring is located on the ground connecting wall 6, and is matched with the set hole door. The double-row reinforcing bars are arranged circumferentially on the outside of the connecting steel ring, and are implanted in the ground connecting wall, and the implanted double-row reinforcing bars and the connecting steel ring are arranged coaxially. The outer protruding ends of the connecting steel ring and the double-row reinforcement are welded and fixed. Reinforcing meshes are bound on the outer protruding ends of the double-row reinforcing bars, and C30 concrete is moulded to seal the gap between the connecting steel ring and the groun...

Example Embodiment

[0050] Embodiment 2:

[0051] see figure 2 , the structure of this embodiment is similar to that of the first embodiment, and the same parts of its structure will not be repeated here, the difference is: this embodiment also includes a full-ring cut-out hole 8 in the inner side of the connecting steel ring, and the cut-out hole The depth of the reinforced bar is the same as the depth of the planted bar, which is used to reduce the disturbance to the connection position of the steel ring when the shield tunneling tool cuts the hole door.

[0052] The specific construction steps 1 to 4 of this embodiment are shown in Embodiment 1, which will not be repeated here. The difference is that it also includes step 5, full-circle drilling inside the cave door:

[0053]On the inner side of the connecting steel ring, the whole ring of the tunnel door is cut, and the cutting depth is consistent with the depth of the planting bar, so as to reduce the disturbance to the connection position...

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Abstract

The invention belongs to the technical field of shield arrival construction, and particularly relates to an installing structure for a shield arrival temporary waterproof device without a main structure and a construction method of the installing structure. The installing structure comprises a connecting steel ring which is located on a diaphragm wall and matched with a tunnel portal. Two rows of circumferential steel bars are embedded in the portion, outside the connecting steel ring, of the diaphragm wall. The embedded two rows of circumferential steel bars are arranged coaxial with the connecting steel ring, and the outer stretching-out ends of the two rows of steel bars are fixed to the connecting steel ring; and meanwhile, steel bar meshes are fixed to the outer stretching-out ends of the two rows of steel bars. Concrete is poured between the steel bar meshes and the connecting steel ring as well as between the steel bar meshes and the diaphragm wall so as to seal clearances between the connecting steel ring and the diaphragm wall. The construction method sequentially comprises the steps of machining of the connecting steel ring, embedding of the steel bars on the tunnel portal, positioning and fixing of the connecting steel ring, C30 formwork-building concrete construction on the peripheries of steel ring plates and the like. By adoption of the installing structure for the shield arrival temporary waterproof device without the main structure and the construction method of the installing structure, shield halt caused by late construction of a station structure in the construction process can be effectively prevented, the process conversion time is reduced, the construction efficiency is improved, the construction progress is accelerated, and the construction period is shortened.

Description

technical field [0001] The invention belongs to the technical field of shield tunneling construction, and in particular relates to a temporary waterproof device installation structure for a shield tunneling without a main body structure and a construction method thereof. Background technique [0002] Due to the mismatch between the station construction and the construction progress of the shield section, the conflict between the station construction and the arrival time of the shield, the side wall of the main structure was not constructed when the shield arrived, and the temporary waterproof device installed on the main structure could not be installed. After the construction of the base plate of the station is completed, the shield tunneling operation will be carried out. It is necessary to install a temporary waterproof device on the continuous wall to connect the steel ring. However, there are few researches in this area in China, and it is impossible to solve the shield...

Claims

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Application Information

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IPC IPC(8): E21D11/38E21D11/10
CPCE21D11/107E21D11/38
Inventor 何列贺婷薛景沛郭卫社陈树茂方一航侯文凯楚明泰石立新
Owner CHINA RAILWAY TUNNEL GROUP CO LTD
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