CN212716655U - Novel installation pretension is used to railway tunnel invert prefabricated section device - Google Patents
Novel installation pretension is used to railway tunnel invert prefabricated section device Download PDFInfo
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- CN212716655U CN212716655U CN202021389154.1U CN202021389154U CN212716655U CN 212716655 U CN212716655 U CN 212716655U CN 202021389154 U CN202021389154 U CN 202021389154U CN 212716655 U CN212716655 U CN 212716655U
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Abstract
The utility model provides a novel installation pretension is used to railway tunnel invert prefabricated section belongs to the relevant technical field of railway tunnel construction for solve the technical problem that the compression is not tight when current railway tunnel invert prefabricated section is laid and lead to leaking, infiltration between a season. The one end of connecting seat is fixed with the stull, and the lower part of stull is provided with the tight device in top, and connecting seat and inverted arch prefabricated section releasable connection are provided with a plurality of track grooves that are used for installing the transportation track on the inverted arch prefabricated section, and the connecting seat is installed in the track groove, and connecting seat ground one end is fixed on the arch of facing upward piece that has installed, and the tight device in top is installed between inverted arch prefabricated section and stull. The utility model discloses a tight device in top for facing upward provides the axial pretightning force between the arch piece, compresses tightly the waterstop between the inverted arch piece, fastens through first bolt and second bolt, has improved the sealed waterproof nature between the arch piece festival that faces upward, effectively prevents the seepage, improves construction quality, and the cost of manufacture is low, and convenient to use has improved the installation effectiveness of inverted arch prefabricated section.
Description
Technical Field
The utility model belongs to the technical field of the railway tunnel construction is relevant, specifically a novel railway tunnel invert is installation pretension for prefabricated section device.
Background
In a railway tunnel constructed by adopting a TBM (tunnel boring machine), the running of a matching system behind the boring machine and the operation of a marshalling of a diesel locomotive for transporting materials are carried out on an inverted arch of the tunnel, and the inverted arch is an important component of a tunnel lining and an integral ballast bed. In the tunnel constructed by the tunneling machine, the inverted arch is paved by a prefabricated inverted arch block while tunneling. Therefore, the laying quality of the inverted arch blocks has important influences on the smooth construction of the development machine, the lining quality of the tunnel, the construction quality of the whole ballast bed and the operation condition of the tunnel.
When the traditional prefabricated inverted arch block is laid, the internode of the inverted arch is in an independent free state after being installed, and the only way for fixing the inverted arch block is to pour fine stone mortar at the bottom of the inverted arch block for fixation. However, because of no axial pretightening force between the inverted arch blocks, the water stop belts between the inverted arch blocks are basically not compressed and even have gaps, the water stop effect is extremely poor, water leakage and water seepage phenomena can occur, and the tunnel construction quality is influenced.
Therefore, a special installation pre-tightening device is needed when the inverted arch blocks are laid, axial pre-tightening force is provided for the inverted arch blocks, and water stop belts among the inverted arch blocks are tightly pressed and fastened, so that the sealing and water stopping performance among the sections is improved.
SUMMERY OF THE UTILITY MODEL
The utility model aims at having above-mentioned problem to current technique, provided a novel railway tunnel invert prefabricated section is with installation preloading device, the technical problem that the device will solve is: how to provide axial pretightening force when the inverted arch blocks are laid, and the waterstop between the inverted arch blocks is compressed, so that the water stopping performance is improved.
The purpose of the utility model can be realized by the following technical proposal:
the utility model provides a novel railway tunnel invert prefabricated section is with installation pretension device, including the connecting seat, the one end of connecting seat is fixed with the stull, the stull sets up with the connecting seat is perpendicular, the lower part of stull is provided with the tight device in top, connecting seat and invert prefabricated section releasable connection, the connection terminal surface of two adjacent invert prefabricated sections is provided with first waterstop, be provided with a plurality of track grooves that are used for installing the transportation track on the invert prefabricated section, the connecting seat is installed in the track groove, the invert prefabricated section of treating the installation is established to first arch of facing upward piece, the invert prefabricated section that has installed is established to the second arch of facing upward piece, the connecting seat passes through fastening bolt to be fixed on the arch of facing upward piece of second, the tight device in top is located between first arch of facing upward piece and.
The utility model discloses a theory of operation is: when the first arch piece that faces upward of installation, the first back of mounting position adjustment of the arch piece that faces upward, place the connecting seat in the track groove to fix it on the arch piece that faces upward of second through the bolt, the tight device in top will first face upward the arch piece and tightly push up to the second inverted arch piece, reduce the clearance between the two, compress tightly first waterstop, it is fixed as an organic whole with two arch pieces that face upward through the inverted arch piece fixing bolt subassembly between the festival, improve the water-proof effects of inverted arch prefabricated section internode.
The connecting seat and the stull are preferably made of H-shaped steel, the connecting seat and the stull are welded and fixed, reinforcing rib plates are welded at the joint of the connecting seat and the stull, the connecting strength of the H-shaped steel is high, the H-shaped steel is convenient to install in the track groove, and the reinforcing rib plates are arranged to increase the supporting strength.
The jacking device is preferably a mechanical jack, the fixed end of the jacking device is connected with the cross brace, the telescopic end of the jacking device jacks the end face of the first inverted arch block, the mechanical jack is strong in supporting force and convenient to operate, and the internode gap of the inverted arch prefabricated block can be effectively reduced.
The middle part of each inverted arch prefabricated block is provided with a drainage ditch, a second water stop belt is arranged at the joint of the drainage ditches of two adjacent inverted arch prefabricated blocks, the two ends of each drainage ditch are respectively provided with a second water stop belt mounting groove, the second water stop belts are positioned in the second water stop belt mounting grooves, the two sides of each inverted arch prefabricated block are respectively provided with a water outlet communicated with the drainage ditch, the connecting end surface of each inverted arch prefabricated block is provided with a first water stop belt mounting groove, the first water stop belt is mounted in the first water stop belt mounting groove, each inverted arch prefabricated block is provided with a grouting hole, and the grouting holes are used for pouring fine aggregate concrete into the bottom of each inverted arch prefabricated block for fixing;
structure more than adopting, the ponding of invert prefabricated section both sides is passed through the discharge opening and is discharged the escape canal, discharges away through the escape canal, compresses tightly the second waterstop simultaneously when the tight first arch piece of facing upward in top, can prevent the escape canal junction seepage, prevents ponding in the tunnel, avoids appearing leaking, the infiltration phenomenon takes place, helps improving tunnel construction quality.
The track groove is provided with a plurality of fastening bolt mounting holes, the fastening bolts are mounted in the fastening bolt mounting holes, the connecting seat is provided with a plurality of bolt holes matched with the fastening bolts, the fastening bolts are preferably spike bolts and are also used for being connected with the transportation track, the fastening bolts are provided with fastening nuts, and the fastening bolts penetrate through the bolt holes in the connecting seat and are connected with the fastening nuts.
The fastening bolt mounting hole is internally embedded with a first threaded sleeve matched with the fastening bolt, and the embedded first threaded sleeve is convenient for mounting and dismounting the fastening bolt.
First bolt mounting hole and second bolt mounting hole have been seted up on the inverted arch prefabricated section, connect through first bolt and second bolt between two adjacent inverted arch prefabricated sections, and first bolt and second bolt are installed respectively in first bolt mounting hole and second bolt mounting hole.
The first bolt is preferably an outer hexagon bolt, the first bolt mounting hole is a straight through hole which is obliquely formed, a first flaring groove is formed in the insertion end of the first bolt mounting hole and is convenient for the bolt to be screwed, and a second threaded sleeve matched with the first bolt is pre-buried in the inverted arch prefabricated block.
Structure more than adopting, when first inverted arch piece was installed, first bolt passed first bolt mounting hole on the first inverted arch piece and is connected with the second threaded sleeve pipe in the second inverted arch piece, and locking mounted position compresses tightly the waterstop.
The second bolt is preferably an arc-shaped bolt, the second bolt mounting hole is an arc-shaped hole matched with the second bolt, and a second flaring groove is formed in the port of the second bolt mounting hole.
Structure more than adopting sets up the nut of being convenient for in second flaring groove and twists and move, and during the installation of first inverted arch piece, the second bolt passes the second bolt mounting hole on the first inverted arch piece, wears out in the second bolt mounting hole on the second inverted arch piece, embolias the flat pad at the both ends of second bolt to use the nut to screw up, lock the mounted position and compress tightly the waterstop, improve water-proof effects.
Compared with the prior art, this novel inverted arch is installation preloading device for prefabricated section has following advantage:
1. when the inverted arch precast block is installed, an axial pretightening force is provided between the inverted arch blocks through the jacking device, a water stop belt between the inverted arch blocks is compressed, fastening is performed through the first bolt and the second bolt, the sealing water stopping performance between sections is improved, accumulated water leakage is effectively prevented, and the construction quality is improved.
2. The connecting seat is installed in the track groove, fixes through fastening bolt, and after the installation, fastening bolt is used for connecting the transportation track, and is rational in infrastructure, and the cost of manufacture is low, and convenient to use has improved the installation effectiveness of inverted arch prefabricated section.
Drawings
FIG. 1 is a schematic view of the present invention in use;
FIG. 2 is a schematic side view of the present invention;
FIG. 3 is a schematic structural view of section A in FIG. 1;
FIG. 4 is a schematic structural view of section B in FIG. 1;
in the figure: 1-connecting seat, 2-cross brace, 3-reinforcing rib, 4-tightening device, 5-fastening bolt, 6-fastening nut, 7-first elevation arch block, 8-second elevation arch block, 9-first bolt, 10-first bolt mounting hole, 11-first threaded casing, 12-first flaring groove, 13-first water stop, 14-first water stop mounting groove, 15-grouting hole, 16-drainage ditch, 17-drainage hole, 18-second water stop mounting groove, 19-track groove, 20-fastening bolt mounting hole, 21-second threaded casing, 22-second bolt, 23-second water stop, 24-second bolt mounting hole and 25-second flaring groove.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.
In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.
In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.
Referring to fig. 1-4, the embodiment provides a novel installation and pre-tightening device for an inverted arch precast block of a railway tunnel, which includes a connecting seat 1, a cross brace 2 is fixed at one end of the connecting seat 1, the cross brace 2 is perpendicular to the connecting seat 1, a tightening device 4 is arranged at the lower part of the cross brace 2, the connecting seat 1 is detachably connected with the inverted arch precast block, a first water stop belt 13 is arranged on the connecting end surface of two adjacent inverted arch precast blocks, a plurality of track grooves 19 for installing and transporting tracks are arranged on the inverted arch precast block, the connecting seat 1 is installed in the track grooves 19, the inverted arch precast block to be installed is set as a first inverted arch block 7, the installed inverted arch precast block is set as a second inverted arch block 8, the connecting seat 1 is fixed on the second inverted arch block 8 through a fastening bolt 5, and the tightening device 4 is located between the first inverted arch block 7 and the cross brace 2; when the first arch piece 7 that leans on of installation, the first back of the mounted position adjustment of the arch piece 7 that leans on, place connecting seat 1 in track groove 19 to fix it on the arch piece 8 is faced upward to the second through the bolt, the tight device 4 in top is with the first arch piece 7 that leans on to the arch piece 8 top tightly of facing upward of second, reduces clearance between the two, compresses tightly first waterstop 13, and it is fixed as an organic whole to pitch the arch piece through the arch piece fixing bolt subassembly of internode with two, improves the water-proof effects of the prefabricated piece internode of inverted arch.
Connecting seat 1 and stull 2 are preferred to adopt H shaped steel to make, and connecting seat 1 and stull 2 welded fastening, and the welding of connecting seat 1 and 2 junctions of stull has deep floor 3, adopts H shaped steel joint strength height, and is convenient for install in track groove 19, sets up deep floor 3 and can increase support strength.
The preferred mechanical jack that tightly installs 4, the stiff end and the stull 2 of tightly installing 4 are connected, and the flexible end top of tightly installing 4 is tight the terminal surface of the first piece 7 of bowing upward, and mechanical jack supporting power is strong, and convenient operation can effectively reduce the internode clearance of inverted arch prefabricated section.
A drainage ditch 16 is formed in the middle of each inverted arch prefabricated block, a second water stop belt 23 is arranged at the joint of the drainage ditches 16 of two adjacent inverted arch prefabricated blocks, second water stop belt mounting grooves 18 are formed in two ends of each drainage ditch 16, each second water stop belt 23 is positioned in each second water stop belt mounting groove 18, water drain holes 17 communicated with the drainage ditches 16 are formed in two sides of each inverted arch prefabricated block, a first water stop belt mounting groove 14 is formed in the connecting end face of each inverted arch prefabricated block, a first water stop belt 13 is mounted in each first water stop belt mounting groove 14, a grouting hole 15 is formed in each inverted arch prefabricated block, and each grouting hole 15 is used for pouring fine stone concrete to the bottom of each inverted arch prefabricated block for fixing; ponding of inverted arch prefabricated section both sides is passed through outlet 17 and is discharged escape canal 16, discharges away through escape canal 16, compresses tightly second waterstop 23 simultaneously when the tight first arch of facing upward in top 7, can prevent the 16 junction seepage in escape canal, prevents ponding in the tunnel, avoids appearing leaking, the infiltration phenomenon takes place, helps improving tunnel construction quality.
A plurality of fastening bolt mounting holes 20 are formed in the track groove 19, the fastening bolts 5 are mounted in the fastening bolt mounting holes 20, a plurality of bolt holes matched with the fastening bolts 5 are formed in the connecting seat 1, the fastening bolts 5 are preferably spike bolts, the fastening bolts 5 are also used for being connected with the transportation track, fastening nuts 6 are arranged on the fastening bolts 5, and the fastening bolts 5 penetrate through the bolt holes in the connecting seat 1 and are connected with the fastening nuts 6.
The fastening bolt mounting hole 20 is embedded with a first threaded sleeve 11 matched with the fastening bolt 5, and the embedded first threaded sleeve 11 facilitates the mounting and dismounting of the fastening bolt 5.
First bolt mounting hole 10 and second bolt mounting hole 24 have been seted up on the inverted arch prefabricated section, connect through first bolt 9 and second bolt 22 between two adjacent inverted arch prefabricated sections, and first bolt 9 and second bolt 22 are installed respectively in first bolt mounting hole 10 and second bolt mounting hole 24.
The first bolt 9 is preferably an outer hexagon bolt, the first bolt mounting hole 10 is a straight through hole which is obliquely formed, a first flaring groove 12 is formed in the insertion end of the first bolt mounting hole 10, the first flaring groove 12 is arranged to facilitate the screwing of the bolt, and a second threaded sleeve 21 matched with the first bolt 9 is pre-buried in the inverted arch prefabricated block; when the first inverted arch block 7 is installed, the first bolt 9 penetrates through the first bolt installation hole 10 in the first inverted arch block 7 to be connected with the second threaded sleeve 21 in the second inverted arch block 8, the installation position is locked, and the water stop belt is tightly pressed.
The second bolt 22 is preferably an arc-shaped bolt, the second bolt mounting hole 24 is an arc-shaped hole matched with the second bolt 22, and a second flaring slot 25 is arranged at the port of the second bolt mounting hole 24; set up second flaring groove 25 and be convenient for the nut to twist and move, when first pitching up arch piece 7 installation, second bolt 22 passes second bolt mounting hole 24 on first pitching up arch piece 7, wears out in the second bolt mounting hole 24 on the arch piece 8 is faced up to the second from the second, embolias the flat pad at the both ends of second bolt 22 to use the nut to screw up, lock the mounted position and compress tightly the waterstop, improve water-proof effects.
The utility model discloses a theory of operation: when the first inverted arch block 7 is installed, the first water stop 13 is installed in the first water stop installation groove 14, the second water stop 23 is installed in the second water stop installation groove 18, and the fastening bolt 5 is installed in the fastening bolt installation hole 20 on the second inverted arch block 8; the first inverted arch block 7 is hoisted to the front of the second inverted arch block 8, after the installation position of the first inverted arch block 7 is adjusted, the connecting seat 1 is placed in the track groove 19, the fastening bolt 5 on the second inverted arch block 8 penetrates through the bolt hole on the connecting seat 1, the upper end of the fastening bolt 5 is screwed through the fastening nut 6, the position of the connecting seat 1 is locked, when the connecting seat is installed, at least two installation pre-tightening devices are used for jacking the first inverted arch block 7, the installation precision is improved, and the position deviation is prevented; starting the jacking device 4, jacking the first inverted arch block 7 to the second inverted arch block 8 by the jacking device 4, reducing the gap between the first inverted arch block and the second inverted arch block, and simultaneously pressing the first water stop belt 13 and the second water stop belt 23 to improve the waterproof effect between the sections of the inverted arch prefabricated blocks; first bolt 9 passes first bolt mounting hole 10 on first upward arch piece 7 and is connected with second threaded sleeve 21 in the second upward arch piece 8, second bolt 22 passes second bolt mounting hole 24 on first upward arch piece 7, wear out in the second bolt mounting hole 24 on the second upward arch piece 8, embolia flat pad at the both ends of second bolt 22, and use the nut to screw up, first bolt 9 and second bolt 22 are connected into a whole with first upward arch piece 7 and second upward arch piece 8, it is inseparable to connect, upward arch prefabricated piece internode sets up first waterstop 13 and second waterstop 23, internode water-proof effects is good.
When the inverted arch precast block is installed, an axial pretightening force is provided between the inverted arch blocks through a jacking device 4, a water stop belt between the inverted arch blocks is compressed, and the inverted arch precast block is fastened through a first bolt 9 and a second bolt 22, so that the sealing and water stopping performance between the sections is improved, the seeper leakage is effectively prevented, and the construction quality is improved; connecting seat 1 is installed in track groove 19, fixes through fastening bolt 5, and after the installation, fastening bolt 5 is used for connecting the transportation track, and is rational in infrastructure, and the cost of manufacture is low, and convenient to use has improved the installation effectiveness of inverted arch prefabricated section.
Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.
Claims (9)
1. A novel installation pre-tightening device for an inverted arch precast block of a railway tunnel comprises a connecting seat (1), it is characterized in that a cross brace (2) is fixed at one end of the connecting seat (1), the cross brace (2) is perpendicular to the connecting seat (1), a jacking device (4) is arranged at the lower part of the cross brace (2), the connecting seat (1) is detachably connected with the inverted arch prefabricated blocks, a first water stop (13) is arranged on the connecting end surface of each two adjacent inverted arch prefabricated blocks, a plurality of track grooves (19) for installing and transporting tracks are arranged on the inverted arch prefabricated blocks, the connecting seat (1) is installed in the track grooves (19), the inverted arch precast block to be installed is set as a first inverted arch block (7), the installed inverted arch precast block is set as a second inverted arch block (8), the connecting seat (1) is fixed on the second inverted arch block (8) through a fastening bolt (5), and the jacking device (4) is located between the first inverted arch block (7) and the transverse support (2).
2. The novel installation and pre-tightening device for the inverted arch precast block of the railway tunnel according to claim 1, characterized in that the connecting seat (1) and the cross brace (2) are made of H-shaped steel, the connecting seat (1) and the cross brace (2) are welded and fixed, and a reinforcing rib plate (3) is welded at the joint of the connecting seat (1) and the cross brace (2).
3. The novel installation preloading device for the inverted arch precast block of the railway tunnel as claimed in claim 2, wherein the jacking device (4) is configured as a mechanical jack, the fixed end of the jacking device (4) is connected with the cross brace (2), and the telescopic end of the jacking device (4) jacks up the end surface of the first inverted arch block (7).
4. The novel installation and pre-tightening device for the inverted arch precast block of the railway tunnel according to any one of claims 1 to 3, wherein a drainage ditch (16) is formed in the middle of the inverted arch precast block, a second water stop (23) is arranged at the joint of the drainage ditches (16) of two adjacent inverted arch precast blocks, second water stop mounting grooves (18) are formed in both ends of the drainage ditch (16), the second water stop (23) is located in the second water stop mounting grooves (18), drain holes (17) communicated with the drainage ditches (16) are formed in both sides of the inverted arch precast block, a first water stop mounting groove (14) is formed in the connecting end surface of the inverted arch precast block, the first water stop (13) is installed in the first water stop mounting groove (14), and grouting holes (15) are formed in the inverted arch precast block.
5. The novel installation and pre-tightening device for the inverted arch precast block of the railway tunnel according to claim 4, characterized in that a plurality of fastening bolt installation holes (20) are formed in the track groove (19), the fastening bolts (5) are installed in the fastening bolt installation holes (20), a plurality of bolt holes matched with the fastening bolts (5) are formed in the connecting seat (1), the fastening bolts (5) are set as spike bolts, fastening nuts (6) are arranged on the fastening bolts (5), and the fastening bolts (5) pass through the bolt holes in the connecting seat (1) to be connected with the fastening nuts (6).
6. The novel installation and pre-tightening device for the inverted arch precast block of the railway tunnel as claimed in claim 5, wherein the fastening bolt installation hole (20) is pre-embedded with a first threaded sleeve (11) matched with the fastening bolt (5).
7. The novel installation and pre-tightening device for the inverted arch precast block of the railway tunnel according to claim 6, wherein the inverted arch precast block is provided with a first bolt installation hole (10) and a second bolt installation hole (24), two adjacent inverted arch precast blocks are connected through a first bolt (9) and a second bolt (22), and the first bolt (9) and the second bolt (22) are respectively installed in the first bolt installation hole (10) and the second bolt installation hole (24).
8. The novel installation and pre-tightening device for the inverted arch precast block of the railway tunnel according to claim 7, wherein the first bolt (9) is a hexagon socket head bolt, the first bolt installation hole (10) is a straight through hole which is obliquely formed, the insertion end of the first bolt installation hole (10) is provided with a first flaring groove (12), and a second threaded sleeve (21) which is matched with the first bolt (9) is pre-buried in the inverted arch precast block.
9. The novel installation and pre-tightening device for the inverted arch precast block of the railway tunnel according to claim 7, wherein the second bolt (22) is an arc bolt, the second bolt installation hole (24) is an arc hole matched with the second bolt (22), and a second flared groove (25) is arranged at a port of the second bolt installation hole (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021389154.1U CN212716655U (en) | 2020-07-15 | 2020-07-15 | Novel installation pretension is used to railway tunnel invert prefabricated section device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021389154.1U CN212716655U (en) | 2020-07-15 | 2020-07-15 | Novel installation pretension is used to railway tunnel invert prefabricated section device |
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| CN212716655U true CN212716655U (en) | 2021-03-16 |
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| CN202021389154.1U Active CN212716655U (en) | 2020-07-15 | 2020-07-15 | Novel installation pretension is used to railway tunnel invert prefabricated section device |
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| CN (1) | CN212716655U (en) |
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