CN117888922A - Pipe jacking connecting device and pipe curtain construction method - Google Patents
Pipe jacking connecting device and pipe curtain construction method Download PDFInfo
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- CN117888922A CN117888922A CN202410020048.2A CN202410020048A CN117888922A CN 117888922 A CN117888922 A CN 117888922A CN 202410020048 A CN202410020048 A CN 202410020048A CN 117888922 A CN117888922 A CN 117888922A
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- 238000010276 construction Methods 0.000 title claims abstract description 61
- 230000008014 freezing Effects 0.000 claims abstract description 15
- 238000007710 freezing Methods 0.000 claims abstract description 15
- 230000000712 assembly Effects 0.000 claims abstract description 8
- 238000000429 assembly Methods 0.000 claims abstract description 8
- 230000008093 supporting effect Effects 0.000 claims description 75
- 238000007789 sealing Methods 0.000 claims description 32
- 238000009434 installation Methods 0.000 claims description 22
- 239000002689 soil Substances 0.000 claims description 22
- 238000000034 method Methods 0.000 abstract description 22
- 238000003466 welding Methods 0.000 abstract description 8
- 229910000831 Steel Inorganic materials 0.000 description 39
- 239000010959 steel Substances 0.000 description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 230000003044 adaptive effect Effects 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The invention relates to the technical field of building auxiliary structures, in particular to a pipe-jacking connecting device and a pipe curtain construction method, and especially relates to a pipe-jacking connecting device free of cutting and welding by using a pipe curtain freezing method and a pipe curtain construction method, wherein the pipe-jacking connecting device comprises a plurality of pipe-jacking pipes with notches on pipe walls and connecting assemblies for connecting adjacent pipe-jacking pipes; the inner wall of the jacking pipe is positioned at two sides of the notch and is provided with an in-pipe connecting piece respectively; the connecting components are respectively connected with the pipe connecting pieces on the same side on the two jacking pipes, so that a cavity for communicating the two jacking pipes is formed; the novel pipe curtain method comprises the steps that a plurality of pipe jacking pipes with notches on the pipe walls are arranged in the construction of the novel pipe curtain method, the adjacent pipe jacking pipes are connected through the connecting components, and the connecting components are respectively connected with pipe connecting pieces on the same side on the two pipe jacking pipes, so that a cavity for communicating the two pipe jacking pipes is formed; the support piece is arranged in the cavity, two ends of the support piece are respectively abutted with the two connecting components, and the adjacent jacking pipes are connected by only screwing the connecting pieces in the pipe and the connecting pieces on the connecting components outside the jacking pipes, so that the construction is simple and the efficiency is high.
Description
Technical Field
The invention relates to the technical field of building auxiliary structures, in particular to a pipe-jacking connecting device and a pipe curtain construction method, and especially relates to a pipe-jacking connecting device free of cutting and welding by using a pipe curtain freezing method and a pipe curtain construction method.
Background
In the tunnel construction process, in a soft soil stratum with larger water content, a new pipe curtain method and a pipe curtain freezing method are adopted for construction, the new pipe curtain method is adopted for construction as a novel construction method, the diameter of a steel pipe is about 2000mm, the outline of a to-be-constructed structure can be directly applied to a pipe row formed by a top steel pipe in the later period of construction, thus the construction of an underground structure is completed, the construction of a tunnel is completed under the condition that the earth surface is not excavated in shallow tunnel construction, the construction method is suitable for the construction of tunnels and underground pipelines in urban areas, the operation of urban roads is not influenced, the geological adaptability is strong, and the earth surface subsidence is small; the pipe curtain freezing method is implemented on the basis of a new pipe curtain method, the pipe curtain freezing method freezes surrounding soil after construction of the top steel pipe is completed, then cuts the steel pipe, welds the steel plate, enables all the top pipes to form a whole, and finally performs pouring on the inside of the pipe curtain.
However, in the construction of the existing new pipe curtain method, pipe jacking connection is carried out, firstly, a pipe jacking notch is cut in a narrow space inside the pipe jacking, then adjacent pipe jacking is connected at the notch through steel plate welding, and because the internal space of the pipe jacking is narrow, the diameter of the pipe jacking is about 2000mm, and the temperature in the pipe is increased during the cutting and welding operation in the pipe jacking, the construction of workers in the pipe is difficult, and the construction efficiency is affected;
therefore, the invention needs to design a cutting-free and welding-free pipe jacking connecting device suitable for a pipe curtain freezing method and a pipe curtain construction method.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a pipe jacking connecting device and a pipe curtain construction method.
The invention provides a pipe-jacking connecting device, which comprises a plurality of pipe-jacking pipes with notches on the pipe walls and connecting components for connecting the adjacent pipe-jacking pipes;
the inner wall of the jacking pipe is positioned at two sides of the notch and is provided with an in-pipe connecting piece respectively;
the connecting components are respectively connected with the pipe connecting pieces on the same side on the two jacking pipes, so that a cavity for communicating the two jacking pipes is formed;
and a supporting piece is arranged in the cavity, and two ends of the supporting piece are respectively abutted with the two connecting assemblies.
Further, the supporting pieces are provided with a plurality of groups, and the contact positions of at least two groups of supporting pieces and the connecting assembly are positioned at the notch edges of the jacking pipe;
the support piece is of a tubular structure, and C25 micro-expansion concrete is filled in the support piece;
and two ends of the support piece are respectively provided with a backing plate.
Further, the connecting piece in the pipe is an L-shaped connecting piece, and two sides of the L-shaped connecting piece are right angles; and two ends of the L-shaped connecting piece are respectively connected with the notch edge and the inner wall of the jacking pipe.
Further, the connecting assembly comprises a connecting main board, and two ends of the connecting main board are vertically connected with a connecting auxiliary board; the connecting main board is detachably connected with one side of the L-shaped connecting piece on the two jacking pipes respectively; the connecting auxiliary plate is detachably connected with the other side of the L-shaped connecting piece on the two jacking pipes respectively.
Further, a plurality of supporting pieces are arranged in the jacking pipe, and the supporting pieces are radially arranged along the jacking pipe;
the supporting piece comprises a first supporting structure and a second supporting structure, a jack is arranged between the first supporting structure and the second supporting structure, and one ends of the first supporting structure and the second supporting structure, which are opposite, are respectively abutted to the inner wall of the jacking pipe.
Further, the opposite ends of the first support structure and the second support structure are respectively connected with an arc-shaped backing plate.
A pipe curtain construction method of a pipe jacking connection device comprises the following steps: s1, sealing gaps of the jacking pipes by adopting a sealing structural member, jacking a plurality of jacking pipes according to jacking positions and jacking directions, and simultaneously adjusting the positions of the gaps of the adjacent jacking pipes so as to facilitate connection of the adjacent jacking pipes after jacking;
s2, after jacking is completed, performing pipe curtain freezing construction, removing a closed structural member at a pipe jacking notch after soil reaches freezing strength, excavating soil between the pipe jacking, and installing a connecting assembly and a supporting piece at the pipe jacking notch through a connecting piece in the pipe jacking to connect adjacent pipe jacking;
s3, pouring the pipe curtain main body structure after the connection assembly and the support piece are constructed.
Further, the sealing structure part comprises an arc-shaped structure which is adaptive to the shape of the top pipe notch;
the two ends of the arc-shaped structure are provided with connecting parts which are matched with the shape and the size of the connecting piece in the pipe, and the mounting positions of the supporting pieces are abutted to the joint of the closed structural piece and the jacking pipe.
Further, the method further comprises: before the closed structural part at the notch of the jacking pipe is removed, a supporting piece is installed in the jacking pipe; and is connected with the current jacking pipe, and is dismantled after construction is finished.
Further, the S2 further includes: firstly excavating soil at the installation position of the upper connecting component between the jacking pipes to finish the installation of the upper connecting component, and then excavating soil at the installation position of the lower connecting component between the jacking pipes to finish the installation of the lower connecting component, and after the installation of the connecting component is finished, installing a support;
compared with the prior art, the invention has the beneficial effects that:
in the construction of the new pipe curtain method, a plurality of pipe jacking pipes with notches on the pipe walls are arranged, adjacent pipe jacking pipes are connected through connecting components, and the connecting components are respectively connected with pipe connecting pieces on the same sides of the two pipe jacking pipes, so that a cavity for communicating the two pipe jacking pipes is formed; a supporting piece is arranged in the cavity, and two ends of the supporting piece are respectively abutted with the two connecting components; the pipe inner connecting piece is an L-shaped connecting piece, and two sides of the L-shaped connecting piece are right angles; the two ends of the L-shaped connecting piece are respectively connected with the notch edge and the inner wall of the jacking pipe; the connecting component isThe connecting assembly comprises a connecting main board, and two ends of the connecting main board are vertically connected with connecting auxiliary boards; the connecting main board is detachably connected with one side of the L-shaped connecting piece on the two jacking pipes through the connecting piece respectively; the auxiliary connection plate 42 is detachably connected with the other side connection piece of the L-shaped connection piece on the two jacking pipes 1 respectively; the outside of the jacking pipe is realized by only screwing the connecting piece on the pipe connecting piece and the connecting piece on the connecting componentThe connection is carried out without entering the narrow space operation of the inner space of the jacking pipe, and cutting, welding and the like are carried out, so that the construction is simple and the efficiency is improved.
Drawings
The following drawings are illustrative of the invention and are not intended to limit the scope of the invention, in which:
FIG. 1 is a schematic view of the steel roof integral pipe structure of the present invention;
FIG. 2 is a schematic view of a push bench connection device according to the present invention;
FIG. 3 is a schematic diagram of a connection structure of a connection motherboard according to the present invention;
FIG. 4 is a schematic view of a connection structure of a connection sub-board according to the present invention;
fig. 5 is a schematic longitudinal view of the push pipe connection device of the present invention.
In the figure: 1-jacking pipes, 2-in-pipe connectors, 21-in-pipe connector reserved studs, 22-in-pipe connector reserved bolt holes, 3-closed structural members, 4-connecting components, 41-connecting main boards, 411-connecting main board bolt holes, 42-connecting auxiliary boards and 421-connecting auxiliary board bolt holes; 5-supporting pieces and 51-pipe bottom steel backing plates; 6-supporting pieces, 61-arc-shaped base plates, 62-jacks, 7-bolts, 71-nuts and 8-first dismounting areas; 9-second removal zone.
Detailed Description
The present invention will be further described in detail with reference to the following specific examples, which are given by way of illustration, in order to make the objects, technical solutions, design methods and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1 to 5, the present invention provides a pipe jacking connection device, which comprises a plurality of pipe jacking pipes 1 with notches on the pipe walls and a connection assembly 4 for connecting adjacent pipe jacking pipes 1;
the inner wall of the jacking pipe is positioned at two sides of the notch and is respectively provided with an in-pipe connecting piece 2;
the connecting components 4 are respectively connected with the pipe connecting pieces 2 on the same side of the two jacking pipes, so that a cavity for communicating the two jacking pipes is formed.
A support piece 5 is arranged in the cavity, and two ends of the support piece 5 are respectively abutted with the two connecting assemblies 4;
it should be noted that, the plurality of connecting components 4 and the supporting pieces 5 are positioned at the notch of the jacking pipe 1;
the notch end of the jacking pipe 1 is connected with a sealing structural member 3 through an in-pipe connecting piece 2, the sealing structural member 3 is arranged adjacent to the connecting assembly 4, the sealing structural members 3 are respectively arranged transversely along the notch of the jacking pipe 1, and the sealing structural member 3 and the jacking pipe 1 are respectively and detachably connected through the in-pipe connecting piece 2; the connecting assembly 4 comprises connecting assemblies 4 which are correspondingly arranged, the connecting assemblies 4 are longitudinally arranged at the upper end and the lower end of the notch, and the connecting assemblies 4 are detachably connected with the jacking pipe 1 through the pipe connecting piece 2 respectively; the plurality of support pieces 5 are arranged between the connecting components 4, two support pieces 5 close to the jacking pipe 1 are respectively arranged at the joint of the jacking pipe 1 and the sealing structural member 3, and waterproof strips are arranged at the joint;
the horizontal end of the pipe connecting piece 2 is provided with the reserved bolt hole 22 of the pipe connecting piece, the vertical end of the pipe connecting piece 2 is connected with the reserved stud 21 of the pipe connecting piece,
the connection sub-plate 42 is connected with the pipe inner connector 2 through the pipe inner connector reserved stud 21 and the nut 71, the connection main plate 41 is connected with the pipe inner connector 2 through the connection main plate bolt hole 411, the pipe inner connector reserved bolt hole 22 and the connection sub-plate bolt hole 421 by bolts 7,
the in-pipe connecting piece 2 is formed by vertically connecting and welding two steel plates, and forms a triangular-like structure with the steel pipe, the structure and the steel pipe are prefabricated by welding in advance in a factory, wherein a reserved stud 21 (single-head stud) of the in-pipe connecting piece is welded on one steel plate, and a reserved bolt hole 22 (bolt hole) of the in-pipe connecting piece is formed on the other steel plate;
wherein, the supporting pieces 5 are provided with a plurality of groups, and the contact positions of at least two groups of supporting pieces 5 and the connecting assembly 4 are positioned at the notch edges of the jacking pipe 1;
the support piece 5 is of a tubular structure, and C25 micro-expansion concrete is filled in the support piece 5;
two ends of the support piece 5 are respectively provided with a backing plate 51;
the supporting piece 5 is a supporting steel pipe, and two ends of the supporting steel pipe are connected with a steel base plate 51 at the bottom of the pipe;
the support piece 5 is internally provided with C25 micro-expansion concrete, and the steel base plates 51 at the bottom of the pipe are respectively arranged at the joints of the jacking pipe 1 and the sealing structural member 3 and are used for preventing water leakage;
further, the pipe connecting piece 2 is an L-shaped connecting piece, and two sides of the L-shaped connecting piece are right angles; the two ends of the L-shaped connecting piece are respectively connected with the notch edge and the inner wall of the jacking pipe;
the connecting assembly 4 comprises a connecting main board 41, and two ends of the connecting main board 41 are vertically connected with a connecting auxiliary board 42; the connecting main board 41 is detachably connected with one side of the L-shaped connecting piece on the two jacking pipes 1 respectively; the auxiliary connection plate 42 is detachably connected with the other sides of the L-shaped connecting pieces on the two jacking pipes 1 respectively;
the connection assembly 4 isThe connecting assembly 4 comprises a connecting main board 41, two ends of the connecting main board 41 are vertically connected with a connecting auxiliary board 42, the two connecting main boards 41 are respectively positioned at the upper end and the lower end of a notch of the jacking pipe 1, the two ends of the connecting main board 41 extend into the jacking pipe 1, and the connecting auxiliary board 42 is detachably connected with the inner wall of the jacking pipe 1 through a pipe connecting piece 2; the connecting main plate 41 and the connecting auxiliary plate 42 are steel plates, and the jacking pipe is a steel jacking pipe;
a sealing structural member 3 is arranged at the notch of the jacking pipe 1, and the sealing structural member 3 isOne end of the sealing structural member 3, which extends into the jacking pipe, is attached to the pipe inner connecting piece 2, the arc-shaped end of the sealing structural member 3 is welded with the notch end of the jacking pipe, and the thickness and the radius of the steel plate of the sealing structural member 3 are the same as those of the jacking pipe 1; the connection component 4 is +.>The connecting steel plate comprises two connecting main plates 41 which are correspondingly arranged, wherein two ends of each connecting main plate 41 are vertically connected with an auxiliary plate 42, each connecting main plate 41 is provided with a steel plate main plate bolt hole 411, and each connecting auxiliary plate 42 is provided with a connecting auxiliary plate bolt hole 421;
wherein, a plurality of supporting pieces 6 are arranged in the jacking pipe 1, and the supporting pieces 6 are radially arranged along the jacking pipe 1;
the supporting piece 6 comprises a first supporting structure and a second supporting structure, a jack 62 is arranged between the first supporting structure and the second supporting structure, and one ends of the first supporting structure and the second supporting structure, which are opposite, are respectively abutted with the inner wall of the jacking pipe 1;
wherein, one end of the first support structure and one end of the second support structure, which are opposite, are respectively connected with an arc-shaped base plate 61;
it should be noted that, a plurality of supporting pieces 6 are provided at two sides of the connection component 4, and the supporting pieces 6 are respectively located in the jacking pipe 1, the supporting pieces 6 are supporting steel risers, each supporting steel riser comprises a first supporting steel riser and a second supporting steel riser, a jack 62 is provided between the first supporting steel riser and the second supporting steel riser, one ends of the first supporting steel riser and the second supporting steel riser are connected with an arc-shaped backing plate 61, one end of the jack 62 is installed at the other end of the first supporting steel riser, the other end of the jack 62 is connected with the other end of the second supporting steel riser, and one ends of the first supporting steel riser and the second supporting steel riser are respectively contacted with the inner wall of the jacking pipe 1 through the arc-shaped backing plate 61;
two adjacent jacking pipes 1 are connected with a supporting piece 5 through a connecting component 4, so that the construction efficiency is high; only a connecting piece is needed to be screwed in the jacking pipe 1, the connecting piece is a nut and a stud, operations such as cutting and welding are not needed, and the construction is simple and the efficiency is high;
further, the pipe connecting pieces 2 are respectively arranged at the notch ends of the jacking pipe 1;
the pipe connecting piece 2 is a right triangle connecting piece with one end being an arc surface, the arc surface of the pipe connecting piece 2 is the same as the arc surface of the jacking pipe 1, one end of the arc surface of the pipe connecting piece 2 is respectively connected with the notch end of the jacking pipe 1, and the other end of the arc surface of the pipe connecting piece 2 is respectively connected with the sealing structural part 3 and the connecting main board 41; the connecting piece is a stud and a nut reserved for the connecting piece in the pipe;
further, the sealing structure 3 isA structure; the bending end of the closed structural member 3 is connected with the vertical end of the pipe connecting piece 2 through the reserved stud 21 of the pipe connecting piece and the nut 71;
a pipe curtain construction method of a pipe jacking connection device comprises the following steps:
s1, sealing gaps of the jacking pipes 1 by adopting a sealing structural member, jacking a plurality of jacking pipes 1 according to jacking positions and jacking directions, and simultaneously adjusting the positions of the gaps of the adjacent jacking pipes 1 so as to facilitate connection of the adjacent jacking pipes 1 after jacking;
s2, after jacking is completed, performing pipe curtain freezing construction, removing a closed structural member 3 at a notch of the jacking pipe 1 after soil reaches freezing strength, excavating soil between the jacking pipes 1, and installing a connecting assembly 4 and a supporting member 5 at the notch of the jacking pipe 1 through a pipe inner connecting member 2 to connect adjacent jacking pipes 1;
the closed structural member comprises an arc-shaped structure which is adaptive to the notch shape of the jacking pipe 1;
connecting parts which are matched with the shape and the size of the connecting piece 2 in the pipe are arranged at two ends of the arc-shaped structure, and the mounting positions of the supporting pieces 5 are abutted to the joint of the closed structural piece 3 and the jacking pipe 1; before the sealing structural member at the notch of the jacking pipe 1 is removed, a supporting piece 6 is installed in the jacking pipe 1; and is connected with the current jacking pipe 1, and is dismantled after construction is finished;
s2-1, firstly excavating soil at the installation position of the upper connecting components 4 between the jacking pipes 1, completing the installation of the upper connecting components 4, then excavating soil at the installation position of the lower connecting components 4 between the jacking pipes 1, completing the installation of the lower connecting components 4, and after the installation of the connecting components 4, performing the installation of the supporting pieces 5;
s3, pouring a pipe curtain main body structure after the connection assembly 4 and the support 5 are constructed;
the pipe curtain construction method adopting the pipe jacking connecting device comprises the following specific working processes:
step one: preparing;
before jacking construction, equipment such as construction electricity, water, channels, drainage, illumination, shaft protection and the like is installed according to requirements. And a simple approach for the construction of the field is constructed, so that the field entering of construction pipe materials, equipment and machines is ensured. The construction materials, equipment and machines must be prepared in order to meet the construction requirements. The preparation of pipe joints and the like needs enough margin to ensure that the subsequent construction is not influenced. Finishing the application of the starting well, the receiving well and the counter-force wall;
step two: measuring and lofting;
firstly, leading the center line position of the center of the jacking pipe to the wall of an originating well, and simultaneously determining the center line direction so as to ensure the jacking position and the jacking direction of the jacking pipe; the posture and the position of the steel pipe are noticed at any time in the jacking process, the horizontal jacking deviation and the vertical jacking deviation are not more than 20mm, the dislocation of the adjacent pipe sections is less than 20mm, the placing angle deviation of the steel pipe is less than 1 degree, and the self-rotation angle of the jacking pipe is determined according to the integral structure of the pipe curtain so as to ensure the smooth construction of the follow-up connecting assembly 4. Preparing for entering a hole after lofting, wherein the preparation comprises the installation of a pipe jacking machine track, a pipe jacking machine head and the like;
step three: jacking the jacking pipe;
pushing the head of the push bench into the hole, and adjusting the position of the water stop ring when the cutterhead is fully in the hole, so that the underground water is completely closed. In the jacking process, whether the waterproof strip between the sealing structural member 3 and the jacking pipe leaks or not is noticed at all times, if water leakage occurs, water stopping measures should be immediately taken, the initial jacking speed should be controlled below 5mm/min, when the self-rotation angle of the jacking pipe is large, the cutter head can be turned over to adjust the self-rotation angle of the jacking pipe, and the jacking speed can be increased when the machine head and the jacking pipe do not deviate and rotate. When the top pipe is propped to a preset position, freezing construction can be performed.
Step four: disassembling the sealing structural member 3;
after jacking of the jacking pipe is completed, mounting a pipe of the supporting piece 6 in the jacking pipe, and after the mounting of the supporting piece 6 is completed, disassembling the sealing structural piece 3;
the supporting members 6 are vertically arranged along the diameter at the jacking pipes on the two sides before the closed structural member 3 is removed, the arc-shaped base plates 61 are arranged at the contact positions of the supporting members 6 and the jacking pipes, and the jack 62 is arranged at the middle position of each supporting member 6 to ensure good supporting effect. And after the supporting construction of the connecting component 4 and the supporting piece 5 between two adjacent jacking pipes of the section is completed, the supporting piece 6 can be dismantled and moved to the next water flowing section for construction. The specific installation method is shown in fig. 2.
Step five, excavating soil between the two jacking pipes; the method comprises the following steps: soil at the installation position of the upper connecting assembly 4 is excavated, and then soil at the installation position of the lower connecting assembly 4 is excavated. After the soil excavation at the upper connecting component 4 is completed, the connecting component 4 is firstly installed, then the soil excavation at the lower connecting component 4 is carried out, and finally the lower connecting component 4 is installed;
step six: installing and constructing the connecting component 4;
after the freezing construction is finished and the freezing strength is reached, the disassembly work of the sealing structural member 3 can be carried out, the disassembly work and the subsequent construction are carried out in a segmented construction and sequentially jump from inside to outside, the length of each construction section is 6 sealing structural members 3, namely, each construction section is provided with 3 sealing structural members 3 of a first disassembly area 8 and 3 sealing structural members 3 of a second disassembly area 9, and the disassembly areas are distributed as shown in figure 5. Removing the sealing structure 3 of the first removing area 8, wherein the nut 71 on the reserved stud 21 of the pipe-in structure is unscrewed in the removing process, and then the sealing structure 3 is removed;
after the closed structural member 3 on one side is removed, soil among pipes is excavated on the side, and the soil is excavated along the longitudinal direction of the main body and then is excavated along the vertical direction. When the closed structural member 3 on the other side is excavated to the other side, the closed structural member 3 on the other side can be detached, and the connecting assembly 4 can be installed after the detachment is completed.
The connecting main board 41 is installed along the excavated soil body along the longitudinal direction of the main body, the connecting main board 41 is attached to the in-pipe connecting device 2 during installation, and the connecting main board bolt holes 411 penetrate through the in-pipe connecting structure to reserve the studs 21 and are fixed by nuts 71. The connection sub-plate 42 is then mounted from the other side, and the connection sub-plate reserved bolt hole 421 should be fixed with the pipe inner connection structure reserved stud 21 and the connection main plate bolt hole 411 by the bolt 7 and the nut 71, in the specific connection manner shown in fig. 3 and 4. The upper connecting component 4 is firstly installed, and then the lower connecting steel plate 4 is installed;
after the connection component 4 and the support 5 of the first disassembly area 8 are completely constructed, the connection component 4 and the support 5 of the second disassembly area 9 are constructed;
step seven: constructing a support 5;
after the connection assembly 4 is installed, the support piece 5 is immediately installed, two ends of the support piece 5 are provided with pipe bottom steel backing plates 51, the thickness of the base of each pipe bottom steel backing plate 51 is adjusted according to the distance between the upper connection assembly 4 and the lower connection assembly 4, so that the effect of supporting the connection assembly 4 is achieved, and C25 micro-expansion concrete is filled in the support piece 5. The mounting position of the support piece 5 is propped against the joint of the closed structural piece 3 and the jacking pipe, and one is respectively mounted on two sides of the connecting component 4, and the specific position is shown in figure 2;
step eight: pouring a pipe curtain main body structure;
and after the construction of the to-be-connected assembly 4 and the support 5 is completed, pouring the main structure of the pipe curtain. The 6 connecting components 4 and the supporting pieces 5 of a certain construction section are all constructed, and the construction of the connecting components 4 and the supporting pieces 5 of the construction section is considered to be completed, so that the main structure of the pipe curtain can be poured, and after the main structure reaches the design strength, the construction of the next running water section can be performed.
The foregoing description of embodiments of the invention has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the technical improvements in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (10)
1. The pipe-jacking connecting device is characterized by comprising a plurality of pipe-jacking pipes (1) with notches on the pipe walls and connecting assemblies (4) for connecting the adjacent pipe-jacking pipes (1);
the inner wall of the jacking pipe is positioned at two sides of the notch and is respectively provided with an in-pipe connecting piece (2);
the connecting component (4) is respectively connected with the pipe connecting pieces (2) on the same side on the two jacking pipes, so that a cavity for communicating the two jacking pipes is formed;
a supporting piece (5) is arranged in the cavity, and two ends of the supporting piece (5) are respectively abutted with the two connecting assemblies (4).
2. A push bench connection device as claimed in claim 1, wherein,
the supporting pieces (5) are provided with a plurality of groups, and the contact positions of at least two groups of supporting pieces (5) and the connecting assembly (4) are positioned at the notch edges of the jacking pipe (1);
the support piece (5) is of a tubular structure, and C25 micro-expansion concrete is filled in the support piece (5);
two ends of the support piece (5) are respectively provided with a backing plate (51).
3. A push bench connection device as claimed in claim 1, wherein,
the pipe inner connecting piece (2) is an L-shaped connecting piece, and two sides of the L-shaped connecting piece are right angles; and two ends of the L-shaped connecting piece are respectively connected with the notch edge and the inner wall of the jacking pipe (1).
4. A push bench connection device as claimed in claim 3, wherein,
the connecting assembly (4) comprises a connecting main board (41), and two ends of the connecting main board (41) are vertically connected with a connecting auxiliary board (42); the connecting main board (41) is detachably connected with one side of the L-shaped connecting piece on the two jacking pipes (1) respectively; the connecting auxiliary plate (42) is detachably connected with the other side of the L-shaped connecting piece on the two jacking pipes (1) respectively.
5. A push bench connection device as claimed in any of claims 1-4, wherein,
a plurality of supporting pieces (6) are arranged in the jacking pipe (1), and the supporting pieces (6) are radially arranged along the jacking pipe (1);
the support piece (6) comprises a first support structure and a second support structure, a jack (62) is arranged between the first support structure and the second support structure, and one ends of the first support structure and the second support structure, which are opposite, are respectively abutted with the inner wall of the jacking pipe (1).
6. A push bench connection device as claimed in claim 5, wherein,
and one ends of the first support structure and the second support structure, which are opposite, are respectively connected with an arc-shaped backing plate (61).
7. A pipe curtain construction method of a pipe jacking connection device comprises the following steps:
s1, sealing gaps of the jacking pipes (1) by adopting a sealing structural member, jacking a plurality of jacking pipes (1) according to jacking positions and jacking directions, and simultaneously adjusting the gap positions of adjacent jacking pipes (1) so as to facilitate connection of the adjacent jacking pipes (1) after jacking;
s2, after jacking is completed, performing pipe curtain freezing construction, removing a closed structural member (3) at a notch of a jacking pipe (1) after soil reaches freezing strength, excavating soil between the jacking pipes (1), and installing a connecting assembly (4) and a supporting member (5) at the notch of the jacking pipe (1) through a pipe inner connecting member (2) to connect adjacent jacking pipes (1);
s3, pouring the main structure of the pipe curtain after the connection assembly (4) and the support piece (5) are constructed.
8. The pipe curtain construction method of the pipe jacking connecting device according to claim 7, wherein the sealing structural member comprises an arc-shaped structure which is matched with the notch shape of the pipe jacking (1);
the two ends of the arc-shaped structure are provided with connecting parts which are matched with the shape and the size of the connecting piece (2) in the pipe, and the mounting positions of the supporting pieces (5) are abutted to the joint of the closed structural piece (3) and the jacking pipe (1).
9. The pipe curtain construction method of a pipe-jacking connection apparatus according to claim 7, further comprising: before the sealing structural member (3) at the notch of the jacking pipe (1) is removed, a supporting member (6) is arranged in the jacking pipe (1); and is connected with the current jacking pipe (1), and is dismantled after construction is finished.
10. The pipe curtain construction method of a pipe jacking connecting device according to any one of claims 7 to 8, wherein said S2 further comprises: soil at the installation position of the upper connecting components (4) between the jacking pipes (1) is excavated firstly, the installation of the upper connecting components (4) is completed, then soil at the installation position of the lower connecting components (4) between the jacking pipes (1) is excavated, the installation of the lower connecting components (4) is completed, and the installation of the supporting piece (5) is carried out after the installation of the connecting components (4) is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410020048.2A CN117888922A (en) | 2024-01-06 | 2024-01-06 | Pipe jacking connecting device and pipe curtain construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410020048.2A CN117888922A (en) | 2024-01-06 | 2024-01-06 | Pipe jacking connecting device and pipe curtain construction method |
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| Publication Number | Publication Date |
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| CN117888922A true CN117888922A (en) | 2024-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410020048.2A Pending CN117888922A (en) | 2024-01-06 | 2024-01-06 | Pipe jacking connecting device and pipe curtain construction method |
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| Country | Link |
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| CN (1) | CN117888922A (en) |
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