CN114776330A - Tunnel primary support structure of diaphragm bag concrete and corrugated steel plate combination - Google Patents
Tunnel primary support structure of diaphragm bag concrete and corrugated steel plate combination Download PDFInfo
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- CN114776330A CN114776330A CN202210386259.9A CN202210386259A CN114776330A CN 114776330 A CN114776330 A CN 114776330A CN 202210386259 A CN202210386259 A CN 202210386259A CN 114776330 A CN114776330 A CN 114776330A
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- 239000004567 concrete Substances 0.000 title claims abstract description 71
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 70
- 239000010959 steel Substances 0.000 title claims abstract description 70
- 239000012528 membrane Substances 0.000 claims abstract description 70
- 239000000463 material Substances 0.000 claims abstract description 12
- 238000001125 extrusion Methods 0.000 claims description 29
- 239000002775 capsule Substances 0.000 claims description 14
- 241000219122 Cucurbita Species 0.000 claims description 3
- 235000009852 Cucurbita pepo Nutrition 0.000 claims description 3
- 239000002689 soil Substances 0.000 abstract description 47
- 238000010276 construction Methods 0.000 abstract description 25
- 238000007789 sealing Methods 0.000 abstract description 6
- 239000004570 mortar (masonry) Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 14
- 239000002985 plastic film Substances 0.000 description 11
- 229920006255 plastic film Polymers 0.000 description 11
- 230000000694 effects Effects 0.000 description 9
- 230000008569 process Effects 0.000 description 7
- 239000002699 waste material Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 239000004566 building material Substances 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000007373 indentation Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/107—Reinforcing elements therefor; Holders for the reinforcing elements
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
- E21D11/20—Special cross- sections, e.g. corrugated
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention belongs to the technical field of tunnel supporting, and particularly relates to a primary tunnel supporting structure combining film bag concrete and a corrugated steel plate, which comprises a corrugated steel plate body and a film bag body; connecting plates are welded at two ends of the corrugated steel plate bodies, a plurality of fixing holes are formed in the connecting plates, two adjacent corrugated steel plate bodies are fixed together through the connecting plates and spliced into an arch-shaped supporting plate, a film bag body is laid on the outer arc surface of the supporting plate and laid along the inner concave surface of the outer surface of the corrugated steel plate body, and concrete is filled in the film bag body; after the concrete in the membrane bag body is dried, the volume expands again to increase, the sealing performance of the port of the pouring area is enhanced, the construction operation is convenient, the concrete screen mesh pouring in the pouring area is benefited, the mortar overflow amount is reduced, and the materials are saved; meanwhile, the membrane bag body and the un-dried concrete are flexible bodies, are supported by expansion according to the shape in a pouring area, and are suitable for areas with lower foundation bearing capacity, such as soft soil, expansive soil, collapsible soil and the like.
Description
Technical Field
The invention belongs to the technical field of tunnel supporting, and particularly relates to a primary tunnel supporting structure combining film bag concrete and a corrugated steel plate.
Background
After the tunnel is excavated, in order to control the stress of surrounding rocks to be properly released and deformed, the structural safety degree is increased, the construction is convenient, and a structural layer which has smaller rigidity and is used as a permanent bearing structure part is immediately constructed after the tunnel is excavated, namely primary support.
The existing tunnel excavation support is generally made of a waveform steel plate, and the waveform steel plate is mainly characterized in that the virtual thickness of the steel plate can be increased through the waveform arrangement, so that the buckling resistance and the shearing resistance of the steel plate are obviously improved. Therefore, the corrugated steel plate is gradually applied to the fields of traffic facilities, building structures and factory and mine construction as a building material, and the arched structure of the corrugated steel plate has the advantages of light weight and quick and convenient construction, and is an ideal substitute of the traditional reinforced concrete arched structure.
When the wave form steel sheet is used for supporting the protection earthwork and resists rock stress, through the arch supporting structure outer spraying concrete that splices into at the wave form steel sheet, because single wave form steel sheet supports, make the regional mouth end of pouring between supporting structure and the soil body, there is the clearance remaining, when the spraying poured concrete, the easy overflow of concrete comes out, influence the whole support intensity and the leakproofness in pouring the district promptly, also correspondingly cause the waste of concrete material simultaneously, and the concrete directly contacts with the wave form steel sheet, the concrete adhesion is on the wave form steel sheet, make the comparatively sealed of taking off of later stage wave form steel sheet, wave form steel sheet damages and can not reuse when serious, cause the waste of building material.
Therefore, the invention provides a primary tunnel supporting structure combining film bag concrete and corrugated steel plates.
Disclosure of Invention
To remedy the deficiencies of the prior art, at least one of the technical problems set forth in the background is addressed.
The technical scheme adopted by the invention for solving the technical problem is as follows: the invention relates to a tunnel primary supporting structure combining film bag concrete and a corrugated steel plate, which comprises a corrugated steel plate body and a film bag body; the corrugated steel plate comprises corrugated steel plate bodies, wherein connecting plates are welded at two ends of each corrugated steel plate body, a plurality of fixing holes are formed in the connecting plates, two adjacent corrugated steel plate bodies are fixed together through the connecting plates and spliced into an arched supporting plate, a film bag body is laid on the outer arc surface of the supporting plate and laid along the inner concave surface of the outer surface of each corrugated steel plate body, and concrete is filled in the film bag body; firstly, a support plate is built, then a membrane bag body is flatly laid on the convex surface of the support plate, then a concrete pump is used for pumping the concrete into the membrane bag body, the membrane bag body is gradually inflated, so that a pouring area between the membrane bag body top support plate and a soil body is plugged, after the concrete in the membrane bag body is dried, the volume is expanded and enlarged again, the sealing property of a port of the pouring area is enhanced, the construction operation is convenient, the concrete screen mesh pouring in the pouring area is benefited, the mortar overflow amount is reduced, and the material is saved; meanwhile, the membrane bag body and the un-dried concrete are flexible bodies, are supported by expansion according to the shape in a pouring area, and are suitable for areas with lower foundation bearing capacity, such as soft soil, expansive soil, collapsible soil and the like.
Preferably, the connecting plate is provided with a through groove; the film bag body comprises a main bag body and a connecting bag body; the main bag body is laid in the concave surface of the outer surface of the corrugated steel plate body, two ends of the main bag body are communicated with the connecting bag body, and the connecting bag body is laid in the through groove; before the film bag body is attached to and covered on the supporting plate, firstly, a plastic film is laid on one side of the convex surface of the supporting plate, and then, the film bag body is laid on the supporting plate, and the plastic film does not influence the laying of the film bag body; according to the arrangement, after the supporting plate is used, in the dismounting process, concrete is prevented from being adhered to the supporting plate to influence the dismounting of the supporting plate, namely, 100% of steel materials can be reused when being dismounted, the repairing cost of the corrugated steel plate body is saved, and construction waste is not generated; and the membrane bag body includes the main bag body and connects the bag body, connects the bag body embedding and leads to the inslot, leads to the groove and provides buffer space for connecting bag body later stage inflation, avoids the connecting plate to lead to the fact the extrusion to connecting the bag body, influences the flow of concrete between the adjacent main bag body, guarantees that the concrete flows to every position of membrane bag body to guarantee this supporting construction to the powerful support of the soil body and pour regional leakproofness.
Preferably, an extrusion groove is formed in the bottom surface of the through groove; the connecting bag body is provided with a rubber rod, one end of the rubber rod is fixedly connected to the connecting bag body, the other end of the rubber rod extends into the extrusion groove, and the other end of the rubber rod is in a gourd shape; lay the membrane bag body in the backup pad in-process, run through plastic film with the rubber pole, then the embedding is in the extrusion inslot between two connecting plates that do not tighten, tighten the bolt between two adjacent connecting plates after that, the connecting plate extrudees the rubber pole in the extrusion inslot, and the shape setting of the rubber pole other end, increase the stability between rubber pole and the connecting plate, moreover the extrusion of rubber pole other end is pressed and is become flat, the rubber pole and the rubber gasket effect of this moment are the same, play two adjacent wave form steel plate body buffer protection, the effect of stability is improved.
Preferably, a concave part is formed in the inner side wall of the extrusion groove, a lower push rod is arranged in the concave part, the lower push rod is made of rubber materials, one end of the lower push rod is fixedly connected in the concave part, the other end of the lower push rod is embedded in a clamping groove formed in the upper side of the other end of the rubber rod, and the clamping groove is obliquely arranged downwards; two lax connecting plates are at the tight in-process that winds, and the connecting plate is close to gradually, and push down the push rod and tend to vertical state gradually simultaneously to push up the draw-in groove down, make the rubber pole remove to extrusion tank depth direction, will connect the bag body and pull and press at logical groove position, further improve the fastness of connecting between the bag body and the connecting plate, thereby improve the stability between the film bag body and the backup pad, improve the laminating degree between the film bag body and the backup pad.
Preferably, the other end of the rubber rod is gourd-shaped, and the interior of the rubber rod is hollow; the inner part of the outer side corner of the clamping groove is hollow, an air passage is formed in the rubber rod part between the hollow part and the hollow part, and the hollow part are communicated with each other through the air passage; the connecting plate extrudes the other end of the elastic rod, gas in the hollow part is blown into the hollow part through the air passage, the hollow part is gradually expanded, the lower push rod is further extruded, the lower push rod is tightly pressed in the clamping groove, and the connection strength between the elastic rod and the extrusion groove is improved again.
Preferably, the two tail ends of the supporting plate are provided with connecting plates, the connecting plates are fixedly connected to the inner connecting plate through bolts, the lower surfaces of the connecting plates are provided with bulges, telescopic grooves are formed between the bulges and the connecting plates, the hole diameters of the notches of the telescopic grooves are reduced, bag bodies are arranged in the telescopic grooves, and the bag bodies are fixedly connected to the inner bottom surfaces of the telescopic grooves; when the supporting structure is built, the supporting structure is supported on the ground through the connecting plates, then gas is blown into the bag body, the bag body is collided to be enlarged, the connecting plates and the supporting structure are jacked on the bag body, so that the supporting structure is more closely attached to the surface of a soil body, the jacking amount of expansion of the bag body is adjusted according to the distance between the supporting structure and the surface of the soil body, and the attaching effect of the supporting structure and the soil body is ensured; when the supporting structure needs to be disassembled, the gas in the capsule body is released, the supporting structure gradually descends at the moment, and then the bolts on the connecting plate are loosened, so that the connecting plate is not under the action of extrusion force of a soil body, the connecting plate is disassembled, and construction operation is facilitated; moreover, can build this supporting construction outside the soil body, after the membrane bag body is laid, transport this supporting construction to the culvert of the soil body again in, then according to the distance between supporting construction and the soil body, the gas is blown into to the utricule, convenient and fast, the construction operation of being convenient for.
Preferably, an elastic rope is arranged in the bag body, the elastic rope is Y-shaped, the forked end of the elastic rope is fixedly connected to the inner bottom surface of the bag body, and the single end of the elastic rope is fixedly connected to the inner bottom surface of the bag body, which extends out of the telescopic groove; after the utricule released gas, the utricule is under pulling of elasticity rope for the utricule protrusion outside the flexible inslot position is dragged to flexible inslot, protects the utricule, reduces the subaerial sharp-pointed object and inserts broken breakage with the utricule, and the shape setting of elasticity rope, makes the utricule can concentrate to flexible inslot central point and puts the indentation, guarantees that the utricule can all arrange the flexible inslot in.
Preferably, a plurality of binding ropes are uniformly sewn on the upper surface of each main bag body; a plurality of hooks are welded at the front edge and the rear edge of the supporting plate, the main bag body is laid on the supporting plate, and the binding ropes are bound on the hooks; after the membrane bag body is laid in the backup pad, the binding rope is bound on the hook, so that the membrane bag body which is not filled with concrete is stabilized in the backup pad, the membrane bag body is fixed in the backup pad in advance, and the position deviation of the membrane bag body in the backup pad is prevented when the supporting structure is moved to the culvert in-process.
Preferably, one end of the rubber rod penetrates through the bag body and is fixedly connected to the inner top surface of the bag body; the rubber pole through connection bag body sets up for connect the whole restriction of bag body and guarantee to connect the stability of the bag body in leading to the inslot.
Preferably, a plurality of communicating bag bodies are arranged between the main bag bodies in the same row, and the communicating bag is communicated with two adjacent main bag bodies in the same row; set up a plurality of intercommunication bag bodies, be in the same place the mutual intercommunication of the main bag body for when pouring concrete, the concrete can be fast and evenly stretch to every position in the membrane bag, makes the supporting construction that the membrane bag body and backup pad are constituteed can stabilize and evenly resist the pressure of the soil body.
The invention has the following beneficial effects:
1. according to the primary tunnel supporting structure combining the membrane bag concrete and the corrugated steel plate, the pouring area is blocked in the pouring area between the top supporting plate of the membrane bag body and the soil body, the volume of the concrete in the membrane bag body is expanded and enlarged again after the concrete is dried, the sealing performance of the port of the pouring area is enhanced, the construction operation is convenient, the concrete screen mesh pouring in the pouring area is benefited, the mortar overflow amount is reduced, and materials are saved; meanwhile, the membrane bag body and the un-dried concrete are flexible bodies, conform to the shape expansion support in a pouring area, and are suitable for areas with lower bearing capacity of foundations such as soft soil, expansive soil, collapsible soil and the like.
2. According to the primary tunnel supporting structure combining the membrane bag concrete and the corrugated steel plate, before the membrane bag body is attached to and covered on the supporting plate, the plastic film is laid on one side of the convex surface of the supporting plate firstly, and then the membrane bag body is laid on the supporting plate, so that the plastic film does not influence the laying of the membrane bag body; this setting, the backup pad is after the use, dismantles the in-process, avoids the concrete adhesion in the backup pad, influences the dismantlement of backup pad, promptly, steel 100% when demolising can reuse, practices thrift the repair cost to the wave form steel plate body, does not produce the construction discarded object.
Drawings
The invention will be further explained with reference to the drawings.
Figure 1 is a perspective view of a support structure of the present invention in cooperation with a tunnel earth;
FIG. 2 is a first perspective view of the support plate of the present invention;
FIG. 3 is an enlarged view of a portion A of FIG. 2;
FIG. 4 is a second perspective view of the support plate of the present invention;
FIG. 5 is a partial enlarged view of FIG. 4 at B;
FIG. 6 is a cross-sectional view of a corrugated steel plate body according to the present invention;
FIG. 7 is an enlarged view of a portion of FIG. 6 at C;
FIG. 8 is a view of the engagement of connector plates with connector tiles according to the present invention;
FIG. 9 is a cross-sectional view of a corrugated steel sheet body according to the present invention;
FIG. 10 is a matching view of the communicating pouch and the main pouch of the present invention;
in the figure: the corrugated steel plate body 1, the film bag body 2, the connecting plate 3, the fixing hole 4, the supporting plate 5, the through groove 6, the main bag body 7, the connecting bag body 8, the extrusion groove, the rubber rod 10, the concave part 11, the lower push rod 12, the clamping groove 13, the air passage 1, the connecting plate 15, the protrusion 16, the telescopic groove 17, the bag body 18, the elastic rope 19, the tying rope 20, the hook 21 and the communicating bag body 22.
Detailed Description
The present invention will be further described with reference to the following detailed description so that the technical means, the creation features, the achievement purposes and the effects of the present invention can be easily understood.
The first embodiment is as follows:
referring to fig. 1-2, a primary tunnel supporting structure combining membrane bag concrete and corrugated steel plates comprises a corrugated steel plate body 1 and a membrane bag body 2; the corrugated steel plate comprises corrugated steel plate bodies 1, wherein connecting plates 3 are welded at two ends of each corrugated steel plate body 1, a plurality of fixing holes 4 are formed in the connecting plates 3, two adjacent corrugated steel plate bodies 1 are fixed together through the connecting plates 3 and spliced into an arched supporting plate 5, a film bag body 2 is laid on the outer arc surface of the supporting plate 5, the film bag body 2 is laid along the inner concave surface of the outer surface of each corrugated steel plate body 1, and concrete is filled in the film bag body 2; the film bag concrete is a protective structure formed by using a continuous (or single) bag body made of double-layer high-strength woven chemical fiber fabric as a flexible template and filling concrete into the bag body by a high-pressure pump. The plugging agent can be used as earth and rockfill dams, embankment protection slopes, bank protection and bottom protection structures of rivers, lakes and sealands and the like, and plays a role in compaction plugging and filling; firstly, a support plate 5 is built, then a membrane bag body 2 is flatly laid on the surface of a bulge 16 of the support plate 5, then a concrete pump is used for pumping the concrete into the membrane bag body 2, the membrane bag body 2 is gradually inflated, so that a pouring area between the support plate 5 and a soil body on the top of the membrane bag body 2 is plugged, after the concrete in the membrane bag body 2 is dried, the volume is expanded and enlarged again, the sealing property of a port of the pouring area is enhanced, the construction operation is convenient, the concrete screen mesh pouring in the pouring area is benefited, the mortar overflow amount is reduced, and the materials are saved; meanwhile, the membrane bag body 2 and the un-dried concrete are flexible bodies, conform to the shape expansion support in a pouring area, and are suitable for areas with lower foundation bearing capacity, such as soft soil, expansive soil, collapsible soil and the like.
Referring to fig. 2-3 and fig. 6, a through groove 6 is formed on the connecting plate 3; the film bag body 2 comprises a main bag body 7 and a connecting bag body 8; the main bag body 7 is laid in the concave surface of the outer surface of the corrugated steel plate body 1, two ends of the main bag body 7 are communicated with the connecting bag body 8, and the connecting bag body 8 is laid in the through groove 6; before the film bag body 2 is attached and covered on the support plate 5, firstly, a plastic film is laid on one side of the bulge 16 surface of the support plate 5, and then the film bag body 2 is laid on the support plate 5, wherein the plastic film does not influence the laying of the film bag body 2; according to the arrangement, after the supporting plate 5 is used, in the dismounting process, concrete is prevented from being adhered to the supporting plate 5 to influence the dismounting of the supporting plate 5, namely, 100% of steel materials can be reused when being dismounted, the repairing cost of the corrugated steel plate body 1 is saved, and construction waste is not generated; and the membrane bag body 2 includes the main bag body 7 and connects the bag body 8, connects the embedding of the bag body 8 and is leading to the inslot 6, leads to the groove 6 and provides buffer space for connecting 8 later stage expansions of the bag body, avoids connecting plate 3 to lead to the fact the extrusion to the connection bag body 8, influences the flow of concrete between the adjacent main bag body 7, guarantees that the concrete flows to every position of the membrane bag body 2 to guarantee this supporting construction to the powerful support of the soil body and pour regional leakproofness.
Referring to fig. 6-7, the inner bottom surface of the through groove 6 is provided with an extrusion groove 9; a rubber rod 10 is arranged on the connecting bag body 8, one end of the rubber rod 10 is fixedly connected to the connecting bag body 8, the other end of the rubber rod 10 extends into the extrusion groove 9, and the other end of the rubber rod 10 is gourd-shaped; lay the membrane bag body 2 in backup pad 5 in-process, run through plastic film with rubber pole 10, then the embedding is in extrusion groove 9 between two connecting plates 3 not tightened, tighten the bolt between two adjacent connecting plates 3 after that, connecting plate 3 extrudes rubber pole 10 in extrusion groove 9, and the shape setting of the rubber pole 10 other end, increase the stability between rubber pole 10 and the connecting plate 3, moreover rubber pole 10 other end extrusion is flat, rubber pole 10 and the rubber gasket effect of this moment are the same, play and protect 1 buffering of two adjacent wave form steel plate bodies, the effect of stability is improved.
Referring to fig. 7, a concave portion 11 is formed in the inner side wall of the extrusion groove 9, a lower push rod 12 is arranged in the concave portion 11, the lower push rod 12 is made of rubber material, one end of the lower push rod 12 is fixedly connected in the concave portion 11, the other end of the lower push rod 12 is embedded in a clamping groove 13 formed in the upper side of the other end of the rubber rod 10, and the clamping groove 13 is arranged obliquely downwards; two lax connecting plates 3 are at last tight in-process, connecting plate 3 is close to gradually, push rod 12 tends to vertical state gradually down simultaneously, and top draw groove 13 down, make rubber pole 10 remove to 9 depth direction in extrusion groove, will connect bag 8 to pull and press at logical groove 6 positions, further improve the fastness between the connection bag 8 and connecting plate 3, thereby improve the stability between the film bag 2 and backup pad 5, improve the laminating degree between the film bag 2 and the backup pad 5.
Referring to fig. 7, the other end of the rubber rod 10 is gourd-shaped and hollow; the inner part of the outer side corner of the clamping groove 13 is hollow, an air passage 14 is formed in the position of the rubber rod 10 between the hollow part and the hollow part, and the hollow part are communicated with each other through the air passage 14; the connecting plate 3 extrudes the other end of the elastic rod, air in the hollow part is blown into the hollow part through the air channel 14, the hollow part gradually expands, the lower push rod 12 is further extruded, the lower push rod 12 is tightly pressed in the clamping groove 13, and the connection strength between the elastic rod and the extrusion groove 9 is improved again.
Referring to fig. 8, the two tail ends of the support plate 5 are provided with connecting plates 15, the connecting plates 15 are fixedly connected to the inner connecting plate 3 through bolts, the lower surface of each connecting plate 15 is provided with a protrusion 16, a telescopic groove 17 is formed between each protrusion 16 and each connecting plate 15, the aperture of a notch of each telescopic groove 17 is reduced, a bag body 18 is arranged in each telescopic groove 17, and the bag body 18 is fixedly connected to the inner bottom surface of each telescopic groove 17; when the supporting structure is built, the supporting structure is supported on the ground through the connecting plates 15, then gas is blown into the bag body 18, the bag body 18 is collided to be enlarged, the bag body 18 is propped against the connecting plates 15 and the supporting structure, so that the supporting structure is more closely attached to the surface of a soil body, the expansion jacking amount of the bag body 18 is adjusted according to the distance between the supporting structure and the surface of the soil body, and the attaching effect of the supporting structure and the soil body is ensured; when the supporting structure needs to be disassembled, the gas in the bag body 18 is released, the supporting structure gradually descends at the moment, and then the bolts on the connecting plate 3 are loosened, so that the connecting plate 3 is not under the action of the extrusion force of the soil body, the connecting plate 3 is disassembled, and the construction operation is convenient; moreover, the supporting structure can be well built outside the soil body, after the membrane bag body 2 is paved, the supporting structure is transported into a culvert of the soil body, and then gas is blown into the bag body 18 according to the distance between the supporting structure and the soil body, so that the supporting structure is convenient and fast to construct and operate.
Referring to fig. 8, an elastic cord 19 is arranged in the bag body 18, the elastic cord 19 is in a Y shape, the branched end of the elastic cord 19 is fixedly connected to the inner bottom surface of the bag body 18, and the single end of the elastic cord 19 is fixedly connected to the inner bottom surface of the bag body 18 extending out of the telescopic slot 17; after 18 release gas of utricule, utricule 18 is under the pulling of elastic cord 19 for the outer position of 18 protrusion flexible grooves 17 of utricule is dragged to flexible groove 17 in, protects utricule 18, reduces the subaerial sharp object and inserts capsule 18 broken breakage, and elastic cord 19's shape setting, makes utricule 18 can concentrate to flexible groove 17 central point and puts the indentation, guarantees that capsule 18 can all arrange in flexible groove 17.
Referring to fig. 9, a plurality of binding ropes 20 are uniformly sewn on the upper surface of each main bag body 7; a plurality of hooks 21 are welded at the front edge and the rear edge of the supporting plate 5, the main bag body 7 is laid on the supporting plate 5, and the binding rope 20 is bound on the hooks 21; after the membrane bag body 2 is laid on the supporting plate 5, the binding rope 20 is bound on the hook 21, so that the membrane bag body 2 which is not filled with concrete is stabilized on the supporting plate 5, the membrane bag body 2 is fixed on the supporting plate 5 in advance, and the supporting structure is moved to the culvert in-process, so that the membrane bag body 2 is prevented from being shifted on the supporting plate 5.
Referring to fig. 6, one end of the rubber rod 10 penetrates through the bag body 8 and is fixedly connected to the inner top surface of the bag body 8; the rubber rod 10 penetrates through the connection bag body 8, so that the connection bag body 8 is integrally limited in the through groove 6, and the stability of the connection bag body 8 is guaranteed.
Example two:
referring to fig. 10, a first comparative example is another embodiment of the present invention, in which a plurality of communicating bag bodies 22 are disposed between the main bag bodies 7 in the same row, and the communicating bag communicates two adjacent main bag bodies 7 in the same row; set up a plurality of intercommunication bag bodies 22, communicate the main bag body 7 each other together for when pouring the concrete, the concrete can be fast and evenly stretch to every position in the membrane bag, makes the supporting construction that the membrane bag body 2 and backup pad 5 are constituteed can stabilize and evenly resist the pressure of the soil body.
The working principle is as follows: firstly, a supporting plate 5 is built, then a membrane bag body 2 is flatly paved on the surface of a bulge 16 of the supporting plate 5, then the membrane bag body 2 is pumped into the membrane bag body 2 through a concrete pump, the membrane bag body 2 is gradually inflated, so that a pouring area between the supporting plate 5 and a soil body is supported by the membrane bag body 2, the pouring area is blocked, after the concrete in the membrane bag body 2 is dried, the volume is expanded and enlarged again, the sealing performance of a port of the pouring area is enhanced, the construction operation is convenient, the concrete screen mesh pouring in the pouring area is benefited, the mortar overflow amount is reduced, and materials are saved; meanwhile, the membrane bag body 2 and the un-dried concrete are flexible bodies, are in compliance with the shape expansion support in a pouring area, and are suitable for areas with lower foundation bearing capacity, such as soft soil, expansive soil, collapsible soil and the like;
before the film bag body 2 is attached to and covered on the support plate 5, firstly, a plastic film is laid on one side of the bulge 16 surface of the support plate 5, and then the film bag body 2 is laid on the support plate 5, wherein the plastic film does not influence the laying of the film bag body 2; according to the arrangement, after the supporting plate 5 is used, in the dismounting process, concrete is prevented from being adhered to the supporting plate 5 to influence the dismounting of the supporting plate 5, namely, 100% of steel materials can be reused in the dismounting process, the repairing cost of the corrugated steel plate body 1 is saved, and construction wastes are not generated; the membrane bag body 2 comprises a main bag body 7 and a connecting bag body 8, the connecting bag body 8 is embedded in the through groove 6, the through groove 6 provides a buffer space for the later expansion of the connecting bag body 8, the connecting plate 3 is prevented from extruding the connecting bag body 8 to influence the flow of concrete between the adjacent main bag bodies 7, and the concrete is ensured to flow to each position of the membrane bag body 2, so that the strong support of the supporting structure on a soil body and the sealing performance of a pouring area are ensured;
in the process of laying the film bag body 2 on the supporting plate 5, the rubber rod 10 penetrates through a plastic film and is embedded into the extrusion groove 9 between the two loose connecting plates 3, then bolts between the two adjacent connecting plates 3 are tightened, the rubber rod 10 is extruded into the extrusion groove 9 by the connecting plates 3, the shape of the other end of the rubber rod 10 is set, the stability between the rubber rod 10 and the connecting plates 3 is improved, the other end of the rubber rod 10 is extruded and flattened, the rubber rod 10 and a rubber gasket have the same effect at the moment, the buffer protection is performed on the two adjacent corrugated steel plate bodies 1, and the stability is improved;
in the tightening process of the two loose connecting plates 3, the connecting plates 3 are gradually close to each other, meanwhile, the lower push rod 12 gradually tends to be in a vertical state and pushes the clamping groove 13 downwards, so that the rubber rod 10 moves towards the depth direction of the extrusion groove 9, the connecting bag body 8 is pulled and pressed at the through groove 6, and the firmness between the connecting bag body 8 and the connecting plates 3 is further improved, so that the stability between the film bag body 2 and the supporting plate 5 is improved, and the attaching degree between the film bag body 2 and the supporting plate 5 is improved;
the connecting plate 3 extrudes the other end of the elastic rod, the gas in the hollow part is blown into the hollow part through the gas channel 14, the hollow part is gradually expanded, the lower push rod 12 is further extruded, the lower push rod 12 is tightly pressed in the clamping groove 13, and the connection strength between the elastic rod and the extrusion groove 9 is improved again;
when the supporting structure is built, the supporting structure is supported on the ground through the connecting plates 15, then gas is blown into the bag body 18, the bag body 18 is collided to be enlarged, the bag body 18 is propped against the connecting plates 15 and the supporting structure, so that the supporting structure is more closely attached to the surface of a soil body, the expansion jacking amount of the bag body 18 is adjusted according to the distance between the supporting structure and the surface of the soil body, and the attaching effect of the supporting structure and the soil body is ensured; when the supporting structure needs to be disassembled, the gas in the capsule body 18 is released, the supporting structure gradually descends at the moment, and then the bolts on the connecting plate 3 are loosened, so that the connecting plate 3 is not under the action of extrusion force of a soil body, the connecting plate 3 is disassembled, and construction operation is facilitated; moreover, the supporting structure can be built outside the soil body, after the laying of the membrane bag body 2 is finished, the supporting structure is transported into a culvert of the soil body, and then gas is blown into the bag body 18 according to the distance between the supporting structure and the soil body, so that the supporting structure is convenient and quick and is convenient for construction operation;
after the capsule 18 releases gas, the capsule 18 is pulled down by the elastic rope 19, so that the part of the capsule 18, which protrudes out of the telescopic groove 17, is pulled into the telescopic groove 17 to protect the capsule 18, the situation that the capsule 18 is broken and broken by inserting a sharp object on the ground is reduced, and the shape of the elastic rope 19 is set, so that the capsule 18 can be concentratedly retracted to the central position of the telescopic groove 17, and the capsule 18 can be completely arranged in the telescopic groove 17; after the membrane bag body 2 is laid on the supporting plate 5, the binding rope 20 is bound on the hook 21, so that the membrane bag body 2 which is not filled with concrete is stabilized on the supporting plate 5, the membrane bag body 2 is fixed on the supporting plate 5 in advance, and the position deviation of the membrane bag body 2 on the supporting plate 5 is prevented in the process of moving the supporting structure into the culvert.
The rubber rod 10 penetrates through the connecting bag body 8, so that the connecting bag body 8 is integrally limited in the through groove 6, and the stability of the connecting bag body 8 is ensured; set up a plurality of intercommunication bag bodies 22, communicate the main bag body 7 each other together for when pouring the concrete, the concrete can be fast and evenly stretch to every position in the membrane bag, makes the supporting construction that the membrane bag body 2 and backup pad 5 are constituteed can stabilize and evenly resist the pressure of the soil body.
The front, the back, the left, the right, the upper and the lower are all based on figure 1 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and the like.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are merely intended to facilitate the description of the present invention and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of the present invention.
The foregoing shows and describes the general principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a tunnel preliminary bracing structure of membrane bag concrete and combination of wave form steel sheet which characterized in that: comprises a corrugated steel plate body (1) and a film bag body (2); the corrugated steel plate is characterized in that connecting plates (3) are welded at two ends of each corrugated steel plate body (1), a plurality of fixing holes (4) are formed in each connecting plate (3), two adjacent corrugated steel plate bodies (1) are fixed together through the connecting plates (3) and are spliced into an arch-shaped supporting plate (5), a film bag body (2) is laid on the outer arc surface of each supporting plate (5), the film bag body (2) is laid along the concave surface on the outer surface of each corrugated steel plate body (1), and concrete is filled in the film bag body (2).
2. The primary tunnel supporting structure of the combination of the membrane bag concrete and the corrugated steel plate as claimed in claim 1, wherein: a through groove (6) is formed in the connecting plate (3); the film bag body (2) comprises a main bag body (7) and a connecting bag body (8); the main bag body (7) is laid in the concave surface of the outer surface of the corrugated steel plate body (1), two ends of the main bag body (7) are communicated with the connecting bag body (8), and the connecting bag body (8) is laid in the through groove (6).
3. The primary tunnel supporting structure of the combination of the membrane bag concrete and the corrugated steel plate as claimed in claim 2, wherein: an extrusion groove (9) is formed in the inner bottom surface of the through groove (6); the rubber rod (10) is arranged on the connecting bag body (8), one end of the rubber rod (10) is fixedly connected to the connecting bag body (8), the other end of the rubber rod (10) extends into the extrusion groove (9), and the other end of the rubber rod (10) is in a gourd shape.
4. The primary tunnel supporting structure combining film bag concrete and corrugated steel plates as claimed in claim 3, wherein: a concave part (11) is formed in the inner side wall of the extrusion groove (9), a lower push rod (12) is arranged in the concave part (11), the lower push rod (12) is made of rubber materials, one end of the lower push rod (12) is fixedly connected into the concave part (11), the other end of the lower push rod (12) is embedded into a clamping groove (13) formed in the upper side of the other end of the rubber rod (10), and the clamping groove (13) is obliquely and downwards arranged.
5. The primary tunnel supporting structure of the combination of the membrane bag concrete and the corrugated steel plate as claimed in claim 4, wherein: the other end of the rubber rod (10) is in a gourd shape, and the interior of the rubber rod is hollow; the inner part of the outer side corner of the clamping groove (13) is hollow, an air passage (14) is formed in the position, between the hollow part and the hollow part, of the rubber rod (10), and the hollow part are communicated with each other through the air passage (14).
6. The primary tunnel supporting structure of the combination of the membrane bag concrete and the corrugated steel plate as claimed in claim 1, wherein: two ends of the supporting plate (5) are provided with connecting plates (15), the connecting plates (15) are fixedly connected to the inner connecting plate (3) through bolts, the lower surfaces of the connecting plates (15) are provided with protrusions (16), telescopic grooves (17) are formed between the protrusions (16) and the connecting plates (15), the hole diameters of the grooves of the telescopic grooves (17) are reduced, bag bodies (18) are arranged in the telescopic grooves (17), and the bag bodies (18) are fixedly connected to the inner bottom surfaces of the telescopic grooves (17).
7. The primary tunnel supporting structure of the combination of the membrane bag concrete and the corrugated steel plate as claimed in claim 6, wherein: the elastic rope (19) is arranged in the capsule body (18), the elastic rope (19) is Y-shaped, the forked end of the elastic rope (19) is fixedly connected to the inner bottom surface of the capsule body (18), and the single end of the elastic rope (19) is fixedly connected to the inner bottom surface of the part, extending out of the telescopic groove (17), of the capsule body (18).
8. The primary tunnel supporting structure combining membrane bag concrete and corrugated steel plates as claimed in claim 2, wherein: a plurality of binding ropes (20) are uniformly sewn on the upper surface of each main bag body (7); the front edge and the rear edge of the supporting plate (5) are welded with a plurality of hooks (21), the main bag body (7) is laid on the supporting plate (5), and the binding rope (20) is bound on the hooks (21).
9. The primary tunnel supporting structure of the combination of the membrane bag concrete and the corrugated steel plate as claimed in claim 5, wherein: one end of the rubber rod (10) penetrates through the bag body (8) and is fixedly connected with the inner top surface of the bag body (8).
10. The primary tunnel supporting structure of the combination of the membrane bag concrete and the corrugated steel plate as claimed in claim 8, wherein: a plurality of communicating bag bodies (22) are arranged between the main bag bodies (7) in the same row, and the communicating bag is communicated with two adjacent main bag bodies (7) in the same row.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210386259.9A CN114776330A (en) | 2022-04-13 | 2022-04-13 | Tunnel primary support structure of diaphragm bag concrete and corrugated steel plate combination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210386259.9A CN114776330A (en) | 2022-04-13 | 2022-04-13 | Tunnel primary support structure of diaphragm bag concrete and corrugated steel plate combination |
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| Publication Number | Publication Date |
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| CN114776330A true CN114776330A (en) | 2022-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210386259.9A Pending CN114776330A (en) | 2022-04-13 | 2022-04-13 | Tunnel primary support structure of diaphragm bag concrete and corrugated steel plate combination |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114991810A (en) * | 2022-08-03 | 2022-09-02 | 山东建筑大学 | Composite supporting structure and construction method of wall rear mould bag grouting and high-strength support |
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2022
- 2022-04-13 CN CN202210386259.9A patent/CN114776330A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114991810A (en) * | 2022-08-03 | 2022-09-02 | 山东建筑大学 | Composite supporting structure and construction method of wall rear mould bag grouting and high-strength support |
| CN114991810B (en) * | 2022-08-03 | 2022-11-22 | 山东建筑大学 | Composite supporting structure and construction method of wall rear mould bag grouting and high-strength support |
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