CN113006833A - Reinforcing bar net piece connection type suitable for assembled tunnel lining - Google Patents
Reinforcing bar net piece connection type suitable for assembled tunnel lining Download PDFInfo
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- CN113006833A CN113006833A CN202110269087.2A CN202110269087A CN113006833A CN 113006833 A CN113006833 A CN 113006833A CN 202110269087 A CN202110269087 A CN 202110269087A CN 113006833 A CN113006833 A CN 113006833A
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- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 98
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 99
- 239000010959 steel Substances 0.000 claims abstract description 99
- 238000010276 construction Methods 0.000 claims abstract description 25
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000003466 welding Methods 0.000 claims description 86
- 238000009417 prefabrication Methods 0.000 claims description 14
- 239000011435 rock Substances 0.000 claims description 14
- 230000002787 reinforcement Effects 0.000 claims description 9
- 238000010008 shearing Methods 0.000 abstract description 2
- 125000006850 spacer group Chemical group 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
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Classifications
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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
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
- E21D11/22—Clamps or other yieldable means for interconnecting adjacent arch members either rigidly, or allowing arch member parts to slide when subjected to excessive pressure
-
- 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
- E21D11/006—Lining anchored in the rock
-
- 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
-
- 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
- E21D11/15—Plate linings; Laggings, i.e. linings designed for holding back formation material or for transmitting the load to main supporting members
- E21D11/152—Laggings made of grids or nettings
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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 discloses a reinforcing mesh sheet connection type suitable for an assembled tunnel lining, which is characterized in that the reinforcing mesh sheets of the assembled tunnel are connected based on fasteners; the fasteners are provided with a plurality of groups, and each group of fasteners comprises two different-nature steel plates and a bolt assembly for connecting the two different-nature steel plates; the method specifically comprises the following steps: prefabricating a steel bar mesh and a fastener; connecting the reinforcing mesh sheets through fasteners; splicing and fixing the steel bar meshes; pouring concrete; repeating the construction until the construction of the whole fabricated tunnel lining is completed; according to the invention, the tensile force of the reinforcing steel bar is converted into the shearing force of the bolt through the fastener, on the premise that the structural strength meets the requirement, the rapid positioning and assembling of the reinforcing steel bar net piece can be realized, and the construction efficiency of the tunnel can be greatly improved.
Description
Technical Field
The invention relates to the technical field of prefabricated tunnel lining construction methods, in particular to a reinforcing mesh connection type suitable for prefabricated tunnel lining.
Background
The lining speed is one of the main factors restricting the construction period of the tunnel.
At present, steel bar binding and welding are carried out in a hole, and due to the fact that the space in the hole is narrow and small, the construction working face is limited, smoke, dust and harmful gas generated by steel bar welding are slowly dispersed in the hole, and the physical health of field workers is seriously harmed.
The mode of prefabricating outside the hole and assembling inside the hole is adopted, so that the problems can be effectively solved.
However, a large number of connectors exist between the reinforcing mesh sheets, welding and mechanical connection adopted in the specification are adopted, and the construction efficiency is low. Therefore, a lining construction method with high efficiency is needed.
Disclosure of Invention
Aiming at the problems, the invention provides a reinforcing mesh connection type suitable for the lining of an assembled tunnel; the method disclosed by the invention is used for connecting the assembled tunnel reinforcing mesh sheets based on the fasteners, so that the construction efficiency can be effectively improved.
The technical scheme of the invention is as follows: a steel mesh sheet connection type suitable for an assembled tunnel lining is characterized in that the steel mesh sheets of the assembled tunnel are connected based on fasteners;
the fasteners are provided with a plurality of groups, and each group of fasteners comprises two different-nature steel plates and a bolt assembly for connecting the two different-nature steel plates;
the connection type comprises the following specific steps:
the method comprises the following steps: steel bar net sheet prefabrication
Prefabricating the reinforcing mesh sheets according to the design specifications of the bottom block, the left standard block, the right standard block and the top block in a reinforcing mesh sheet processing factory outside the tunnel;
step two: prefabrication of fasteners
Prefabricating the fasteners according to design specifications in a fastener processing plant outside the tunnel;
step three: assembling and fixing of reinforcing mesh
Welding special-shaped steel plates at two ends of each reinforcing mesh, wherein welding seams are arranged at the contact parts of the reinforcing steel bars and the special-shaped steel plates outside the reinforcing mesh to complete the connection of the reinforcing mesh and the special-shaped steel plates;
the connected reinforcing mesh is conveyed to the working surface of the tunnel, the bottom block is positioned and fixed firstly, then the left standard block is positioned on the rock walls on the two sides of the tunnel by adopting a mechanical mounting arm, the two dissimilar steel plates are connected through a bolt assembly, and finally the reinforcing mesh is connected with the random anchor rods on the rock walls of the tunnel to complete the fixation of the reinforcing mesh left standard block;
positioning and fixing the right standard block and the top block according to the steps, namely, assembling and fixing a ring of reinforcing mesh sheets;
step four: pouring concrete
Erecting a template and pouring concrete;
step five: finish the tunnel lining construction
And repeating the third step and the fourth step until the construction of the whole fabricated tunnel lining is completed.
Further, the profiled steel sheet comprises a first mounting block and a welding plate arranged on the first mounting block; be provided with a plurality of first bolt holes on the first installation piece, a plurality of first bolt holes evenly are the inline setting in proper order on first installation piece.
Furthermore, the first mounting block and the welding plate are of an integral structure, and the first mounting block and the welding plate form an L-shaped structure; the overall structure can satisfy the intensity after the reinforcing bar net piece is assembled fixedly in later stage.
Furthermore, the bolt assembly comprises a bolt capable of being arranged on the first bolt hole, a nut capable of being movably arranged on the bolt, and a gasket for reinforcing the bolt capable of being movably arranged on the bolt; the structure is a conventional bolt assembly structure, and has the advantages of easiness in obtaining and lower cost in specific construction.
Furthermore, a placing hole with a first screw head is reserved in the first bolt hole of the first mounting block; the screw end of the first screw is welded in the placing hole; the screw end of the first screw is welded in the placing hole, so that the requirements of rapid installation and accurate positioning of the assembled reinforcing steel bar mesh piece can be met.
Furthermore, the profiled steel plate comprises a second mounting block and a plurality of welding blocks which are sequentially and uniformly arranged on the side surface of the second mounting block at intervals; the second mounting block is provided with a plurality of second bolt holes, the second bolt holes are sequentially and uniformly arranged on the second mounting block in a straight line, and each second bolt hole and each welding block are on the same horizontal line; when being connected between the reinforcing bar net piece, can carry out the welding of one-to-one to reinforcing bar net piece outside reinforcing bar, not only can reach accurate location, can also solve material cost effectively.
Furthermore, the second mounting block and the plurality of welding blocks are of an integral structure; and the ratio of the spacing distance between the welding blocks to the width of the first welding block is 1: 1.5-3.5.
Furthermore, welding grooves are formed in the welding surfaces of the welding blocks; set up the welding groove and can carry out the quick contact location to reinforcing bar net piece outside reinforcing bar in subsequent welding, change the welding.
Furthermore, a deformation tolerance groove is formed in the second mounting block; the deformation tolerance groove is positioned at the contact part of the welding block and the second mounting block; the deformation tolerance groove can reserve certain deformation tolerance for welded reinforcing bar net piece outside reinforcing bar in later period.
Furthermore, contact surface connecting notches are formed in the welding surfaces of the welding blocks; the contact surface connecting groove openings are uniformly distributed on two sides of the welding groove; the use of the contact surface to interface with the notch is easier to operate in subsequent welding.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the tensile force of the reinforcing steel bar is converted into the shearing force of the bolt through the fastener, so that the rapid positioning and assembling of the reinforcing steel bar net piece can be realized on the premise that the structural strength meets the requirement, and the construction efficiency of the tunnel can be greatly improved;
2. the fastener provided by the invention has reasonable overall structural design, and can realize rapid positioning and assembly of the reinforcing mesh by adopting a simpler structure; moreover, the fastener provided by the invention is suitable for industrial mass production, can be prefabricated with the reinforcing mesh in the early stage in a factory at the same time, and is more suitable for mass popularization.
Drawings
FIG. 1 is a schematic structural view of the assembled and fixed steel mesh of the present invention;
FIG. 2 is a view showing a structure of a partial connection between a reinforcing mesh and a fastener according to the present invention;
FIG. 3 is an exploded view of a fastener according to example 1 of the present invention;
FIG. 4 is an exploded assembly view of a fastener according to example 1 of the present invention;
FIG. 5 is an exploded view of a fastener according to example 3 of the present invention;
FIG. 6 is a top view of a fastener according to example 3 of the invention;
FIG. 7 is an exploded view of a fastener according to example 4 of the present invention;
FIG. 8 is a top view of a fastener according to example 4 of the present invention;
FIG. 9 is an exploded view of a fastener according to example 5 of the present invention;
FIG. 10 is a top view of a fastener according to example 5 of the present invention;
FIG. 11 is an exploded view of a fastener according to example 6 of the present invention;
FIG. 12 is a top view of a fastener according to example 6 of the invention;
the mounting structure comprises a 1-anisotropic steel plate, 110-a first bolt hole, 111-a first mounting block, 112-a welding plate, 120-a second bolt hole, 121-a second mounting block, 122-a welding block, 123-a welding groove, 124-a deformation tolerance groove, 125-a contact surface joint notch, a 2-bolt assembly, 21-a screw, 22-a nut and 23-a gasket.
Detailed Description
Example 1: a steel mesh sheet connection type suitable for an assembled tunnel lining is characterized in that the steel mesh sheets of the assembled tunnel are connected based on fasteners;
as shown in fig. 3 and 4, the fasteners have multiple groups, each group of fasteners comprises two different-shaped steel plates 1 and a bolt assembly 2 for connecting the two different-shaped steel plates 1; the profiled steel sheet 1 includes a first mounting block 111, and a welding plate 112 provided on the first mounting block 111; a plurality of first bolt holes 110 are formed in the first mounting block 111, and the first bolt holes 110 are sequentially and uniformly arranged in a straight line on the first mounting block 111; the first mounting block 111 and the welding plate 112 are of an integral structure, and the first mounting block 111 and the welding plate 112 form an L-shaped structure; the bolt assembly 2 comprises a first bolt 21 which can be arranged on the first bolt hole 110, a nut 22 which can be movably arranged on the bolt 21, and a gasket 23 which is used for reinforcing and can be movably arranged on the bolt 21;
the specific steps of the connection type of this embodiment include:
the method comprises the following steps: steel bar net sheet prefabrication
Prefabricating the reinforcing mesh sheets according to the design specifications of the bottom block, the left standard block, the right standard block and the top block in a reinforcing mesh sheet processing factory outside the tunnel;
step two: prefabrication of fasteners
Prefabricating the fasteners according to design specifications in a fastener processing plant outside the tunnel;
step three: assembling and fixing of reinforcing mesh
Welding special-shaped steel plates 1 at two ends of each reinforcing mesh, wherein welding seams are arranged at the contact parts of the reinforcing steel bars outside the reinforcing mesh and the special-shaped steel plates 1, so that the reinforcing mesh and the special-shaped steel plates 1 are connected; then, a screw 21 is inserted into the first bolt hole 110 of the deformed steel plate 1 welded on the outer steel mesh plate;
then, positioning the left standard block on rock walls on two sides of the tunnel by adopting a mechanical mounting arm; as shown in fig. 2, the first bolt hole 110 through the deformed steel plate 1 welded to the outer mesh reinforcement sheet is inserted into the first bolt hole 110 through the deformed steel plate 1 welded to the inner mesh reinforcement sheet, the spacer 23 is placed, and the nut 22 is tightened;
finally, connecting the reinforcing mesh with a random anchor rod on the rock wall of the tunnel to complete the fixation of the reinforcing mesh;
positioning and fixing the right standard block and the top block are sequentially completed according to the steps, and as shown in figure 1, assembling and fixing of a ring of reinforcing mesh sheets are completed;
step four: pouring concrete
Erecting a template and pouring concrete;
step five: finish the tunnel lining construction
And repeating the third step and the fourth step until the construction of the whole fabricated tunnel lining is completed.
Example 2: the difference from example 1 is: the first mounting block 111 is positioned in the first bolt hole 110 and is reserved with a placing hole of the screw head of the screw 21; the screw head of the screw 21 can be welded in the receiving hole.
The specific steps of the connection type of this embodiment include:
the method comprises the following steps: steel bar net sheet prefabrication
Prefabricating the reinforcing mesh sheets according to the design specifications of the bottom block, the left standard block, the right standard block and the top block in a reinforcing mesh sheet processing factory outside the tunnel;
step two: prefabrication of fasteners
Prefabricating the fasteners according to design specifications in a fastener processing plant outside the tunnel;
step three: assembling and fixing of reinforcing mesh
Welding special-shaped steel plates 1 at two ends of each reinforcing mesh, wherein welding seams are arranged at the contact parts of the reinforcing steel bars outside the reinforcing mesh and the special-shaped steel plates 1, so that the reinforcing mesh and the special-shaped steel plates 1 are connected; then, the screw 21 is inserted into the first bolt hole 110 of the deformed steel plate 1 welded on the outer steel mesh, and the screw end of the screw 21 is welded in the placing hole;
then, a mechanical mounting arm is adopted to position the left standard block on rock walls on two sides of the tunnel, a first bolt hole 110 penetrating through the deformed steel plate 1 welded on the outer side reinforcing mesh sheet penetrates through a first bolt hole 110 penetrating through the deformed steel plate 1 welded on the inner side reinforcing mesh sheet, a gasket 23 is placed, and a nut 22 is screwed tightly;
finally, connecting the reinforcing mesh with a random anchor rod on the rock wall of the tunnel to complete the fixation of the reinforcing mesh;
positioning and fixing the right standard block and the top block according to the steps, namely, assembling and fixing a ring of reinforcing mesh sheets;
step four: pouring concrete
Erecting a template and pouring concrete;
step five: finish the tunnel lining construction
And repeating the third step and the fourth step until the construction of the whole fabricated tunnel lining is completed.
Example 3: a steel mesh sheet connection type suitable for an assembled tunnel lining is characterized in that the steel mesh sheets of the assembled tunnel are connected based on fasteners;
the fastener has a plurality of groups, each group of fasteners comprises two different-nature steel plates 1 and a bolt assembly 2 for connecting the two different-nature steel plates 1;
as shown in fig. 5 and 6, the profiled steel sheet 1 includes a second mounting block 121, a plurality of welding blocks 122 disposed on the side of the second mounting block 121 at regular intervals in sequence; a plurality of second bolt holes 120 are formed in the second mounting block 121, the plurality of second bolt holes 120 are sequentially and uniformly arranged in a straight line on the second mounting block 121, and each second bolt hole 120 and each welding block 122 are on the same horizontal line;
the first bolt assembly 2 comprises a first bolt 21 which can be arranged on the second bolt hole 120, a first nut 22 which can be movably arranged on the bolt 21, and a first gasket 23 which can be movably arranged on the first bolt 21 and used for reinforcing;
the specific steps of the connection type of this embodiment include:
the method comprises the following steps: steel bar net sheet prefabrication
Prefabricating the reinforcing mesh sheets according to the design specifications of the bottom block, the left standard block, the right standard block and the top block in a reinforcing mesh sheet processing factory outside the tunnel;
step two: prefabrication of fasteners
Prefabricating the fasteners according to design specifications in a fastener processing plant outside the tunnel;
step three: assembling and fixing of reinforcing mesh
Welding special-shaped steel plates 1 at two ends of each reinforcing mesh, wherein welding seams are arranged at the contact parts of the reinforcing steel bars outside the reinforcing mesh and the special-shaped steel plates 1, so that the reinforcing mesh and the special-shaped steel plates 1 are connected; then, a screw 21 is inserted into the first bolt hole 110 of the deformed steel plate 1 welded on the outer steel mesh plate; it should be noted that: in this embodiment, the outer steel bars of each steel bar mesh are required to be welded to the corresponding welding blocks 122; the welding seam is the contact part of the outside steel bar of the steel bar mesh and the first welding block 122;
then, positioning the left standard block on rock walls on two sides of the tunnel by adopting a mechanical mounting arm; as shown in fig. 2, the first bolt hole 110 through the deformed steel plate 1 welded to the outer mesh reinforcement sheet is inserted into the first bolt hole 110 through the deformed steel plate 1 welded to the inner mesh reinforcement sheet, the spacer 23 is placed, and the nut 22 is tightened;
finally, connecting the reinforcing mesh with a random anchor rod on the rock wall of the tunnel to complete the fixation of the reinforcing mesh;
positioning and fixing the right standard block and the top block are sequentially completed according to the steps, and as shown in figure 1, assembling and fixing of a ring of reinforcing mesh sheets are completed;
step four: pouring concrete
Erecting a template and pouring concrete;
step five: finish the tunnel lining construction
And repeating the third step and the fourth step until the construction of the whole fabricated tunnel lining is completed.
Example 4: the difference from example 3 is: as shown in fig. 7 and 8, a reinforcing mesh connection type suitable for an assembled tunnel lining is characterized in that welding grooves 123 are formed in the welding surfaces of welding blocks 122;
the specific steps of the connection type of this embodiment include:
the method comprises the following steps: steel bar net sheet prefabrication
Prefabricating the reinforcing mesh sheets according to the design specifications of the bottom block, the left standard block, the right standard block and the top block in a reinforcing mesh sheet processing factory outside the tunnel;
step two: prefabrication of fasteners
Prefabricating the fasteners according to design specifications in a fastener processing plant outside the tunnel;
step three: assembling and fixing of reinforcing mesh
Welding special-shaped steel plates 1 at two ends of each reinforcing mesh, wherein welding seams are arranged at the contact parts of the reinforcing steel bars outside the reinforcing mesh and the special-shaped steel plates 1, so that the reinforcing mesh and the special-shaped steel plates 1 are connected; then, a screw 21 is inserted into the first bolt hole 110 of the deformed steel plate 1 welded on the outer steel mesh plate; it should be noted that: in this embodiment, the outer steel bars of the steel bar mesh are required to be welded to each corresponding welding block 122; in the welding process, the outside steel bars of the steel bar mesh are placed in the welding groove 123 for welding, and the welding seam is the contact part of the outside steel bars of the steel bar mesh and the welding block 122;
then, positioning the left standard block on rock walls on two sides of the tunnel by adopting a mechanical mounting arm; as shown in fig. 2, the first bolt hole 110 through the deformed steel plate 1 welded to the outer mesh reinforcement sheet is inserted into the first bolt hole 110 through the deformed steel plate 1 welded to the inner mesh reinforcement sheet, the spacer 23 is placed, and the nut 22 is tightened;
finally, connecting the reinforcing mesh with a random anchor rod on the rock wall of the tunnel to complete the fixation of the reinforcing mesh;
positioning and fixing the right standard block and the top block are sequentially completed according to the steps, and as shown in figure 1, assembling and fixing of a ring of reinforcing mesh sheets are completed;
step four: pouring concrete
Erecting a template and pouring concrete;
step five: finish the tunnel lining construction
And repeating the third step and the fourth step until the construction of the whole fabricated tunnel lining is completed.
Example 5: the difference from example 4 is: as shown in fig. 9 and 10, the second mounting block 121 is provided with a deformation allowance groove 124; the deformation allowance groove 124 is located at a contact of the second welding block 122 and the second mounting block 121.
Example 6: the difference from example 5 is: as shown in fig. 11 and 12, the welding surfaces of the second welding blocks 122 are provided with contact surface notches 125; a plurality of contact surface groove connecting openings 125 are formed, and the plurality of contact surface groove connecting openings 125 are uniformly distributed on two sides of the welding groove 123;
the specific steps of the connection type of this embodiment include:
the method comprises the following steps: steel bar net sheet prefabrication
Prefabricating the reinforcing mesh sheets according to the design specifications of the bottom block, the left standard block, the right standard block and the top block in a reinforcing mesh sheet processing factory outside the tunnel;
step two: prefabrication of fasteners
Prefabricating the fasteners according to design specifications in a fastener processing plant outside the tunnel;
step three: assembling and fixing of reinforcing mesh
Welding special-shaped steel plates 1 at two ends of each reinforcing mesh, wherein welding seams are arranged at the contact parts of the reinforcing steel bars outside the reinforcing mesh and the special-shaped steel plates 1, so that the reinforcing mesh and the special-shaped steel plates 1 are connected; then, a screw 21 is inserted into the first bolt hole 110 of the deformed steel plate 1 welded on the outer steel mesh plate; it should be noted that: in this embodiment, the outer steel bars of the steel bar mesh are required to be welded to each corresponding welding block 122; in the welding process, the outside steel bars of the steel bar mesh are placed in the welding groove 123 for welding, and the welding seam is the contact part of the outside steel bars of the steel bar mesh and the welding block 122; the contact part of the outside steel bar of the steel bar net sheet and the welding block 122 is further reinforced and welded by utilizing the contact surface connecting notch 123
Then, positioning the left standard block on rock walls on two sides of the tunnel by adopting a mechanical mounting arm; as shown in fig. 2, the first bolt hole 110 through the deformed steel plate 1 welded to the outer mesh reinforcement sheet is inserted into the first bolt hole 110 through the deformed steel plate 1 welded to the inner mesh reinforcement sheet, the spacer 23 is placed, and the nut 22 is tightened;
finally, connecting the reinforcing mesh with a random anchor rod on the rock wall of the tunnel to complete the fixation of the reinforcing mesh;
positioning and fixing the right standard block and the top block are sequentially completed according to the steps, and as shown in figure 1, assembling and fixing of a ring of reinforcing mesh sheets are completed;
step four: pouring concrete
Erecting a template and pouring concrete;
step five: finish the tunnel lining construction
And repeating the third step and the fourth step until the construction of the whole fabricated tunnel lining is completed.
Claims (10)
1. A reinforcing mesh connection type suitable for an assembled tunnel lining is characterized in that the reinforcing mesh of the assembled tunnel is connected based on a fastener;
the fastener has a plurality of groups, each group of fasteners comprises two different-shaped steel plates (1) and a bolt assembly (2) for connecting the two different-shaped steel plates (1);
the connection type comprises the following specific steps:
the method comprises the following steps: steel bar net sheet prefabrication
Prefabricating the reinforcing mesh sheets according to the design specifications of the bottom block, the left standard block, the right standard block and the top block in a reinforcing mesh sheet processing factory outside the tunnel;
step two: prefabrication of fasteners
Prefabricating the fasteners according to design specifications in a fastener processing plant outside the tunnel;
step three: assembling and fixing of reinforcing mesh
Welding special-shaped steel plates (1) at two ends of each reinforcing mesh, wherein welding seams are arranged at the contact parts of the reinforcing steel bars and the special-shaped steel plates (1) at the outer sides of the reinforcing meshes to complete the connection of the reinforcing meshes and the special-shaped steel plates (1);
the connected reinforcing mesh is conveyed to the working surface of the tunnel, the bottom block is positioned and fixed firstly, then the left standard block is positioned on the rock walls on the two sides of the tunnel by adopting a mechanical mounting arm, and the reinforcing mesh is connected with random anchor rods on the rock walls of the tunnel to complete the fixation of the reinforcing mesh;
positioning and fixing the right standard block and the top block according to the steps, namely, assembling and fixing a ring of reinforcing mesh sheets;
step four: pouring concrete
Erecting a template and pouring concrete;
step five: finish the tunnel lining construction
And repeating the third step and the fourth step until the construction of the whole fabricated tunnel lining is completed.
2. A reinforcing mesh connection type suitable for an assembled tunnel lining according to claim 1, wherein the profiled steel sheet (1) comprises a first mounting block (111), and a welding plate (112) arranged on the first mounting block (111); a plurality of first bolt holes (110) are formed in the first mounting block (111), and the first bolt holes (110) are sequentially and uniformly arranged in a straight line on the first mounting block (111).
3. The connection type of the steel mesh suitable for the fabricated tunnel lining is characterized in that the first mounting block (111) and the welding plate (112) are of an integral structure, and the first mounting block (111) and the welding plate (112) form an L-shaped structure.
4. A reinforcing mesh connection type suitable for fabricated tunnel lining according to claim 2, wherein said bolt assembly (2) comprises a screw (21) capable of being disposed on the first bolt hole (110), a nut (22) capable of being movably disposed on the screw (21), and a washer (23) capable of being movably mounted on the screw (21) for reinforcement.
5. A reinforcing mesh connecting type suitable for an assembled tunnel lining according to claim 1, wherein the deformed steel plate (1) comprises a second mounting block (121), a plurality of welding blocks (122) which are sequentially and uniformly arranged on the side surface of the second mounting block (121) at intervals; the second mounting block (121) is provided with a plurality of second bolt holes (120), the second bolt holes (120) are sequentially and uniformly arranged in a straight line on the second mounting block (121), and each second bolt hole (120) and each welding block (122) are on the same horizontal line.
6. A reinforcing mesh connecting type suitable for an assembled tunnel lining according to claim 5, wherein the second mounting block (121) and the plurality of welding blocks (122) are of an integral structure; and the ratio of the spacing distance between the welding blocks (122) to the width of the first welding block (122) is 1: 1.5-3.5.
7. A steel mesh connecting type suitable for an assembled tunnel lining according to claim 5, wherein the welding surfaces of the welding blocks (122) are provided with welding grooves (123).
8. A reinforcing mesh connection type suitable for a fabricated tunnel lining according to claim 7, wherein the second mounting block (121) is provided with a deformation allowance groove (124); the deformation tolerance groove (124) is located at a contact of the welding block (122) and the second mounting block (121).
9. A steel mesh connecting type suitable for an assembled tunnel lining according to claim 7, wherein the welding surfaces of the welding blocks (122) are provided with contact surface connecting notches (125); the contact surface connecting notches (125) are multiple, and the contact surface connecting notches (125) are uniformly distributed on two sides of the welding groove (123).
10. A steel mesh connecting type suitable for an assembled tunnel lining according to claim 7, wherein the welding surfaces of the welding blocks (122) are provided with contact surface connecting notches (125); the contact surface connecting notches (125) are multiple, and the contact surface connecting notches (125) are uniformly distributed on two sides of the welding groove (123).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110269087.2A CN113006833A (en) | 2021-03-12 | 2021-03-12 | Reinforcing bar net piece connection type suitable for assembled tunnel lining |
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| CN202110269087.2A CN113006833A (en) | 2021-03-12 | 2021-03-12 | Reinforcing bar net piece connection type suitable for assembled tunnel lining |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02296996A (en) * | 1989-05-08 | 1990-12-07 | Shimizu Corp | Assembly method for tunnel lining steel bar |
| JPH07324595A (en) * | 1994-05-31 | 1995-12-12 | Fujita Corp | Inner concrete form and secondary lining method for shield tunnel of internal water pressure compliance type |
| CN110397450A (en) * | 2019-07-26 | 2019-11-01 | 浙江交工集团股份有限公司 | A kind of assembled connection method of lining concrete in tunnel structure reinforcing bars |
| CN110552722A (en) * | 2019-10-12 | 2019-12-10 | 黄河勘测规划设计研究院有限公司 | Fabricated reinforcement cage construction method for rapid tunnel lining |
| CN110685255A (en) * | 2019-11-09 | 2020-01-14 | 黄河勘测规划设计研究院有限公司 | Assembled reinforced concrete segment suitable for quick lining of horseshoe tunnel |
| CN111411991A (en) * | 2020-05-09 | 2020-07-14 | 黄河勘测规划设计研究院有限公司 | Fabricated reinforcement mesh lining structure and method for horseshoe-shaped tunnel |
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2021
- 2021-03-12 CN CN202110269087.2A patent/CN113006833A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02296996A (en) * | 1989-05-08 | 1990-12-07 | Shimizu Corp | Assembly method for tunnel lining steel bar |
| JPH07324595A (en) * | 1994-05-31 | 1995-12-12 | Fujita Corp | Inner concrete form and secondary lining method for shield tunnel of internal water pressure compliance type |
| CN110397450A (en) * | 2019-07-26 | 2019-11-01 | 浙江交工集团股份有限公司 | A kind of assembled connection method of lining concrete in tunnel structure reinforcing bars |
| CN110552722A (en) * | 2019-10-12 | 2019-12-10 | 黄河勘测规划设计研究院有限公司 | Fabricated reinforcement cage construction method for rapid tunnel lining |
| CN110685255A (en) * | 2019-11-09 | 2020-01-14 | 黄河勘测规划设计研究院有限公司 | Assembled reinforced concrete segment suitable for quick lining of horseshoe tunnel |
| CN111411991A (en) * | 2020-05-09 | 2020-07-14 | 黄河勘测规划设计研究院有限公司 | Fabricated reinforcement mesh lining structure and method for horseshoe-shaped tunnel |
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Application publication date: 20210622 |