Composite cavity vacuum tension elastic mold and rapid construction process using same
An elastic mold and cavity technology, which is applied in shaft lining, tunnel lining, underground chamber, etc., can solve problems such as uneven stress on segments, cracking of concrete at holes, water leakage of subway tunnel segments, etc. Strong structure, high strength, reinforced segment structure, and the effect of improving the strength of surrounding rock
Pending Publication Date: 2022-03-01
陕西同人应用材料有限公司
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Problems solved by technology
[0003] Under normal circumstances, the damage of subway tunnel segments mainly includes: some segments are damaged during transportation; after entering the site for acceptance and before the segment is hoisted and lowered for assembly, it is damaged; after assembly, it is damaged; it peels off; it cracks during use, etc.; Through statistics on the causes of segment damage in actual construction, it is concluded that the main reasons for segment damage in subway tunnels are as follows: 1. The finished products produced by the segment factory are unqualified, and there are defects in key parts such as edges, corners and sealing rings. There are cracks or air bubbles on the surface of the piece; 2. The staff did not operate properly when installing the segment, causing the concrete in the hole to crack, resulting in damage to the segment; 3. When the shield machine is tunneling, due to the adjustment of the shield machine posture, etc Due to the influence of various factors, complex stress situations such as uneven stress or excessive stress concentration on the segment on the annulus will cause the segment to be partially crushed, and appearance defects such as cracking and chipping will appear; 4. The operation process of the subway With the change of the vehicle load and the asymmetric extrusion of the segment when turning, some segments will be damaged; on the other hand, the subway tunnel segment will leak water, and the leakage water of the subway tunnel segment mainly occurs At the segment joints, segment bolt holes, and segment hoisting holes; according to statistics, the main causes of segment water leakage are: the segment itself is poor in waterproof performance, and the segment assembly error is too large, especially when forming After the segment is out of the shield tail, there is a large staggered deformation; the water stop strip of the segment is not firmly pasted; the secondary grouting pressure is too high, which causes cracking and deformation of the segment; the grouting is insufficient and not completely sealed Gap between segments
[0004] At present, there are existing repair methods for subway tunnel segment damage and water leakage defects. The main problems are that the repair equipment is relatively large, and the repair and handling takes a lot of time. Repair the damaged part, low work efficiency and high cost
Method used
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Embodiment 1
[0040] Such as Figures 1 to 7 As shown, this embodiment provides a composite cavity vacuum tension elastic mold including a hose mold frame 11, a middle limit reinforcing hose 12, a transverse rib outer membrane 13, an inner joint belt 14, a top exhaust pipe 16, and a bottom solid injector 15 And the elastic sealing gasket 17, the middle limit reinforced hose 12 is arranged between the hose mold frames 11, and is parallel with the longer mold frame of the hose mold frame 11, and the end of the middle limit enhanced hose 12 is connected with the soft hose mold frame 11. The shorter mold frame of the pipe mold frame 11 is connected, and an elastic sealing gasket 17 is arranged between the hose mold frame 11 and the subway tunnel segment or surrounding rock 10, and the transverse rib outer membrane 13 is arranged on the hose mold frame 11 away from the subway tunnel pipe. One side of the piece or the surrounding rock 10, and connected with the side of the middle limit reinforced...
Embodiment 2
[0046] This embodiment provides another embodiment of the present invention, and the formed retainer 21 can be replaced by the elastic sealing gasket 17 .
Embodiment 3
[0048] The present embodiment provides another embodiment of the present invention, the top exhaust pipe 16 is "U" type, and the top of the top exhaust pipe (16) of the "U" shape is provided with an exhaust slot 22 and a slurry outlet slot 24 in parallel, One end of the top exhaust pipe 16 of the "U" shape is provided with a slurry indicating pipe 23, which makes a sound during exhaust and stops when the slurry is discharged.
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Abstract
The invention discloses a composite cavity vacuum tension elastic mold and a rapid construction process using the mold, relates to the technical field of support or reinforcement of subway tunnel segments or surrounding rocks, and solves the problems that the existing repair method for subway tunnel segment damage and water leakage defects mainly has the defects of larger repair equipment, more time consumption for repair and carrying, low repair cost and the like. The technical problems that a traditional repairing method consumes much time, multiple damaged positions cannot be repaired in a short time, working efficiency is low, cost is high and the like are solved. The device comprises a hose mold frame, a middle limiting reinforcing hose, a transverse rib outer film, an inner side connecting belt, a top exhaust pipe, a bottom solid injection device and an elastic sealing gasket. The composite cavity vacuum tension elastic mold and the rapid construction process using the mold have the advantages that the efficiency is high, the strength is high, an original supporting structure is not damaged, and the mold adapts to underground narrow space.
Description
technical field [0001] The invention relates to the technical field of support or reinforcement of subway tunnel segments or surrounding rocks, and more specifically relates to the technical field of a composite cavity vacuum tension elastic mold and a rapid construction process using the mold. Background technique [0002] The subway tunnel segment is a complete concrete liner of the subway tunnel that is assembled with prefabricated segments at the back while the shield machine is digging forward; these segments are the innermost barrier of the subway tunnel. It plays the role of resisting soil pressure, groundwater pressure and some special loads. [0003] Under normal circumstances, the damage of subway tunnel segments mainly includes: some segments are damaged during transportation; after entering the site for acceptance and before the segment is hoisted and lowered for assembly, it is damaged; after assembly, it is damaged; it peels off; it cracks during use, etc.; Th...
Claims
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IPC IPC(8): E21D11/10
CPCE21D11/10
Inventor刘向东陈斌李学彬
Owner陕西同人应用材料有限公司