CN1151930A

CN1151930A - Rubber bag core for prestressed pore canal

Info

Publication number: CN1151930A
Application number: CN 96119556
Authority: CN
Inventors: 刘树范; 刘学韧; 刘韧
Original assignee: 刘树范
Priority date: 1996-11-18
Filing date: 1996-11-18
Publication date: 1997-06-18

Abstract

The rubber bag mould is used in forming prestressed pore canal. It is sealed at its two ends with fluid inside it, and it may have an alignment core tube placed inside it to ensure its flatness. It makes the construction of long pore canal easily, and it has the merits of corrugated metal pipe and is low in cost and light.

Description

Rubber bag core for prestressed pore canal

The invention belongs to prestressed pore passage formation technology in bridge, the large-scale civil engineering, especially a kind of capsule adds stamen pipe prestressed pore passage mold.

Now, in the hope of reducing the metal bellows cost that existing prestressed pore passage forms, the present invention is except the whole advantage sexual functions that possess metal bellows, its cost only equals metal bellows cost≤10%, save 〉=90%, that is with the steel tendon mould to form the cost of post-stressed duct mold basic identical, but the cost that adds stamen pipe prestressed pore passage mold when quantities hour capsule forms post-stressed duct mold than steel tendon mould and exceeds much, capsule adds the restriction that is not subjected to orifice throat length of extracting of stamen pipe prestressed pore passage mold, do not have hell and high water and problem, this is that capsule adds the unique point that is better than steel tendon mould formation post-tensioned prestressing duct mold of stamen pipe prestressed pore passage mold.

The purpose of this invention is to provide a kind of capsule and add stamen pipe prestressed pore passage mold.

The present invention is achieved in that in the capsule of using with duct design internal diameter same outer diameter as and adds the stamen pipe, inside capsule wall and stamen pipe outer wall are coated with lubricator, in capsule, has the stamen pipe, has rope in the stamen pipe, rope left end and the fixed sealing of capsule, the left end of restricting after the fixed sealing is connected with the high-strength steel tow, the rope right-hand member is connected sealing with capsule, then by the valve pressure injection go into fluid for mold, in the cement concrete final set after-hardening, open valve and emit fluid, breakdown capsule right-hand member and rope be connected with sealing after pull rope after extracting the stamen pipe to the right, the cement concrete of stripping capsule and cell walls breaks away from one by one in promptly presenting, and extracts capsule at last fully, meanwhile the high-strength steel tow is also dragged into duct by rope, simultaneously to high-strength steel tow applied thrust.

Very long stamen Guan Yi is pulled off as the duct, and can add a plurality of pier nose anchors respectively to pierce into the pier nose steel wire several in stamen pipe left end and centre, and length surpasses the stamen pipe, to stamen pipe and the application of force pulling simultaneously of pier nose steel wire, extracts the stamen pipe when extracting the stamen pipe.

Flat, the straight degree of capsule passes through 2～6 pairs of capsule rings when adhering to specification substantially, 2～6 pairs of turnbuckles, 2～6 pairs of fixed bodies are stretched capsule can not establish the stamen pipe when directly making capsule reach designing requirement, other is constant only not establish the stamen pipe, and it is put down behind capsule pressure injection fluid, straight degree adheres to specification the stamen pipe and turnbuckle all can not established.

Fluid should be used compressed air when the duct was straight line, duct such as middle part be put down, when straight two is bent upwards, fluid respectively accounts for 50% with water and compressed air in capsule, the lower edge at middle flat, straight position is with the weight of the thin iron wire support mold of suitable spacing, the suitable water fully of the fluid that the duct is filled when being curve substantially entirely fills, and utilizes the weight of water that capsule is bent downwardly.

Capsule is rubber, plastic cement material, and stamen tubing matter is tubing such as plastics, nylon, rubber, and being connected to tie up with common rope of capsule right-hand member and rope gets final product, and sealing is with plastic clay mud.

Specific embodiments of the invention are provided by the following drawings.

Fig. 1 is a general structure schematic diagram of the present invention;

Fig. 2 is the cross-sectional view of Fig. 1;

Fig. 3 is a capsule withdrawal process schematic diagram of the present invention;

Fig. 4 is that stamen pipe of the present invention adds pier nose anchor and pier nose steel wire schematic diagram;

Fig. 5 is the pier nose anchor of Fig. 4 stamen pipe left end and pier nose anchor, the pier nose steel wire schematic diagram of stamen pipe pars intermedia;

Below in conjunction with accompanying drawing embodiments of the invention are described further.

Embodiment 1

See shown in Fig. 1～2: use in the capsule 4 with duct 20 internal diameter same outer diameter as to have stamen pipe 5, capsule 4 inwalls 7 are coated with lubricator with stamen pipe 5 outer walls 6, has rope 3 in the stamen pipe 5, as seizing wire, nylon rope, crudefiber crop rope or other material rope or than fine steel rib is tensile members, restrict 3 left ends and capsule 4 fixed

sealings

8,3 left ends of restricting after the fixed sealing 8 are connected 2 with high-strength steel tow 1,3 right-hand members of restricting are connected 16 sealings 15 with capsule 4, go into fluid 13 by valve 14 pressure injections then, compressed air or water or dual-purpose promptly become mold.

Embodiment 2

See shown in Figure 3: in the cement concrete 12 final set after-hardening, open valve 14 and emit fluid 13, breakdown capsule 4 right-hand members and rope 3 be connected 16 with sealing 15 after 17 pull rope 3 after extracting stamen pipe 5 to the right, stripping capsule 4 breaks away from one by one with the cement concrete 12 of duct 20 walls in promptly presenting, extract capsule 4 at last fully, meanwhile high-strength steel tow 1 is also dragged into duct 20 by rope 3, simultaneously to high-strength steel tow 1 applied thrust.

Embodiment 3

Shown in Fig. 4～5: easily pulled off as the very long stamen pipe 5 in duct 20, also add a plurality of pier nose anchors 18,21 respectively to pierce into pier nose steel wire 19 several in stamen pipe 5 left ends and centre, length surpasses stamen pipe 5, to stamen pipe 5 and pier nose steel wire 19 application of force pulling simultaneously, extracts stamen pipe 5 when extracting stamen pipe 5.

Embodiment 4

See shown in Fig. 1～2: by 2-6 9 pairs of capsules 4 of 10,2～6 pairs of fixed bodies of 11,2～6 pairs of turnbuckles of capsule ring are stretched when flat, the straight degree of capsule 4 conforms to designing requirement substantially and can not established stamen pipe 5 when flat, the straight degree that directly makes capsule 4 reaches designing requirement, other is constant only not establish stamen pipe 5, and its flat, straight degree stamen pipe 5 that adheres to specification all can not established with turnbuckle 10 behind capsule 4 pressure injection fluids 13.

Fluid 13 was used compressed air when duct 20 was straight line, duct 20 as the middle part be put down, fluid 13 respectively accounted for 50% with water and compressed air when straight two was bent upwards in capsule 4, the lower edge at middle flat, straight position is with the weight of the thin iron wire support mold of suitable spacing, the fluid 13 suitable waters fully that duct 20 is filled when being curve substantially entirely fill, and utilize the weight of water that capsule 4 is bent downwardly.

Embodiment 5

Capsule 4 is rubber, plastic cement material, and stamen pipe 5 materials are tubing such as plastics, nylon, rubber, and 3 materials of restricting are tensile members such as finer wire, nylon, the rope made of hemp, and capsule 4 right-hand members are tied up and got final product with the common rope of 16 usefulness that is connected of rope 3, seal the plastic clay mud of 15 usefulness.

Claims

1, a kind of rubber bag core for prestressed pore canal, it is characterized in that: use in the capsule (4) with duct (20) design internal diameter same outer diameter as to add stamen pipe (5), capsule (4) inwall (7) is coated with lubricator with stamen pipe (5) outer wall (6), has rope (3) in the stamen pipe (5), rope (3) left end and the fixed sealing of capsule (4) (8), affixed sealing (8) restrict afterwards (3) be connected (2) with high-strength steel tow (1), rope (3) right-hand member is connected (16) sealings (15) with capsule, go into fluid (13) by valve (14) pressure injection then, become mold.

2, by the described rubber bag core for prestressed pore canal of claim 1, it is characterized in that: in cement concrete (12) the final set after-hardening, open valve (14) and emit fluid (13), after being connected of breakdown capsule (4) right-hand member and rope (3) (16) and the sealing (15) to the right (17) extract stamen pipe (5) and pull rope (3) afterwards, stripping capsule (4) breaks away from one by one with the cement concrete (12) of duct (20) wall in promptly presenting, extract capsule (4) at last fully, meanwhile high-strength steel tow (1) is also dragged into duct (20) by rope (3), simultaneously to high-strength steel tow (1) application of force thrust.

3, by the described rubber bag core for prestressed pore canal of claim 1, it is characterized in that: very long as duct (20), stamen pipe (5) is easily pulled off, can add a plurality of pier nose anchors (18) at stamen pipe (5) left end and centre, that (21) respectively pierce into pier nose steel wire (19) is several, length surpasses stamen pipe (5), when extracting stamen pipe (5),, extract stamen pipe (5) to stamen pipe (5) and pier nose steel wire (19) application of force pulling simultaneously.

4, by the described rubber bag core for prestressed pore canal of claim 1, it is characterized in that: capsule (4) flat, when straight degree conforms to designing requirement substantially by 2-6 to capsule ring (11), 2～6 pairs of turnbuckles (10), 2～6 pairs of fixed bodies (9) are stretched directly capsule (4), make capsule (4) can not establish stamen pipe (5) when reaching designing requirement, other is constant only not have stamen pipe (5), behind capsule (4) pressure injection fluid 13, it is flat, the straight stamen pipe (5) that adheres to specification of spending all can not established with turnbuckle (10)

Fluid (13) was used compressed air when duct (20) was straight line, duct (20) as the middle part be put down, fluid (13) respectively accounted for 50% with water and compressed air when straight two was bent upwards in capsule (4), the lower edge at middle flat, straight position is with the weight of the thin iron wire support mold of suitable spacing, the fluid (13) that duct (20) is filled when being curve substantially entirely, water fills fully, utilizes the weight of water that capsule (4) is bent downwardly.

5, by the described rubber bag core for prestressed pore canal of claim 1, it is characterized in that: capsule (4) is rubber, plastic cement material, stamen pipe (5) material is tubing such as plastics, nylon, rubber, rope (3) material is tensile members such as steel wire, nylon, the rope made of hemp, being connected of capsule (4) right-hand member and rope (3) (16) tied up with common rope and gets final product, and sealing (15) is with plastic clay mud.