CN110748362A - Pipe jacking assembly system and assembly method for necking shaft - Google Patents
Pipe jacking assembly system and assembly method for necking shaft Download PDFInfo
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- CN110748362A CN110748362A CN201911270438.0A CN201911270438A CN110748362A CN 110748362 A CN110748362 A CN 110748362A CN 201911270438 A CN201911270438 A CN 201911270438A CN 110748362 A CN110748362 A CN 110748362A
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- 238000000034 method Methods 0.000 title claims abstract description 25
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 112
- 238000010276 construction Methods 0.000 claims abstract description 65
- 229910052742 iron Inorganic materials 0.000 claims abstract description 48
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 235000000396 iron Nutrition 0.000 claims description 3
- 238000013459 approach Methods 0.000 claims 1
- 238000007789 sealing Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 238000009412 basement excavation Methods 0.000 description 6
- 239000002689 soil Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/40—Devices or apparatus specially adapted for handling or placing units of linings or supporting units for tunnels or galleries
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
- E21D11/083—Methods or devices for joining adjacent concrete segments
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Abstract
A pipe jacking and assembling system for a necking shaft is positioned in a pipe jacking starting area and comprises a construction shaft and a pipe jacking area; the construction shaft comprises an upper part shrinking area and a lower part expanding area; a jack and counterforce wall area, a top iron and splicing equipment area and a segment splicing area are arranged in the lower expansion area of the construction shaft; each pipe section of the jacking pipe is formed by assembling a plurality of pipe pieces, and the pipe pieces are adjusted in posture after passing through the upper part shrinking area of the construction shaft and are assembled in the lower part expanding area; the jack and the reaction wall area comprise a reaction wall and a jacking jack for jacking the jacking pipe; the top iron and assembling equipment area comprises top iron and segment assembling equipment positioned in the top iron; the segment assembling equipment comprises a main body trolley and a telescopic arm so as to facilitate the assembling of segments; the segment assembling area is used for adjusting and assembling the posture of the segments; and after the assembly of the pipe pieces is completely finished and a complete pipe joint is formed, the pipe joint is jacked into the tunnel through the jacking jack and the counterforce wall, and the whole process of jacking pipe assembly and jacking is finished.
Description
Technical Field
The invention relates to the related field of jacking pipes, in particular to a jacking pipe assembling system and method for a necking shaft.
Background
With the advance of urbanization construction, the ground buildings of various cities are increased, and particularly, the ground buildings in the core areas of most of the cities are more and more dense. The dense ground building also brings more difficulties to the construction of the underground structure, and the frequent excavation of urban roads also brings much inconvenience to the lives of citizens. The pipe jacking technology is a trenchless construction method, is a trenchless or trenchless pipeline burying construction technology, and is generally used for municipal engineering. The excavation method has the advantages that the excavation is not needed or is less, so the influence on city construction during construction is small, the road traffic is not blocked, the vehicles can normally pass, and the damage and the influence on ground infrastructure can be reduced. So most municipal works select the pipe jacking method at present.
The traditional pipe jacking method needs to transport pipe pieces prefabricated in a factory to a construction site, install the pipe pieces in a working pit, overcome the friction force between a pipeline and surrounding soil by means of jacking equipment, jack the pipeline into the soil, and repeat the steps until the jacking work of the whole section of tunnel is completed.
However, the pipe jacking method has the problems that the construction vertical shaft is large in size, and the width of the construction vertical shaft is generally larger than that of a pipe jacking joint. When the jacking pipes arranged along the road are constructed, the road excavation area is too large, the road is often blocked and cannot pass, and great troubles are brought to urban traffic at certain traffic main roads.
The invention provides a pipe jacking assembly system and an assembly method for a necking shaft, which are used for excavating a construction shaft with a smaller size on the side of a road without blocking all roads, transporting segmented pipe pieces prefabricated in a factory into a pipe jacking initial area from the construction shaft, assembling the segmented pipe pieces into complete pipe joints on site in a working pit, and jacking a pipeline into the soil by means of jacking force generated by jacking equipment. The method can reduce the road excavation area and ensure that the ground vehicles can still normally pass during construction; and the construction period and the construction cost can be saved, and the installation is convenient.
Disclosure of Invention
In view of the above, the embodiments of the present invention provide a pipe jacking system for a throat shaft and a pipe jacking method thereof, which can not only block road traffic and reduce damage and influence on ground infrastructure during construction of an underground structure by using an underground space; the difficult problems of duct piece transportation and assembly in a smaller construction shaft can be solved, the construction period is saved, and the construction cost is effectively reduced. In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:
a pipe jacking and assembling system for a necking shaft is characterized in that the system is positioned in a pipe jacking starting area and comprises a construction shaft and a pipe jacking area connected with the construction shaft; the construction shaft comprises an upper shrinking area (1) close to the ground and a lower expanding area (2); a jack and counterforce wall area, a top iron and splicing equipment area and a segment splicing area are arranged in the lower expansion area (2) of the construction shaft; each pipe section of the jacking pipe is formed by assembling a plurality of pipe pieces, and the pipe pieces are adjusted in posture after passing through the upper part shrinking area of the construction shaft and are assembled in the lower part expanding area of the construction shaft; the jack and the reaction wall area comprise a reaction wall (3) and a jacking jack (4) for jacking the jacking pipe; the jacking iron and assembling equipment area comprises jacking iron (5) used for assisting the jacking of the pipe joint and pipe piece assembling equipment positioned in the space of the jacking iron; a main body trolley (6) of the segment assembling equipment is positioned in the inner space of the top iron (5), a telescopic arm (7) is arranged on the main body trolley (6), and the telescopic arm (7) can extend out of a segment assembling area to assist segment assembling; the segment assembling area is used for adjusting and assembling the posture of the segments; after the pipe pieces are assembled completely, the pipe pieces are fixedly connected in an appointed mode, corresponding waterproof measures are arranged, after an integral complete pipe joint is formed, the pipe joint is jacked into the tunnel through a jacking jack (4) and a reaction wall (3), and the whole process of jacking pipe assembly and jacking is completed.
Furthermore, the outer side of the ejector iron (5) comprises a steel template (8) extending into the duct piece assembling area, and the steel template (8) can assist in duct piece positioning during pipe jacking duct piece assembling; the inner side of the top iron (5) comprises a side wall segment fixing device (9), the device can rotate and enter the segment assembly area, and after the side wall segment (10) is in place, the side wall segment fixing device (9) is in close contact with the side wall segment (10) to fix the side wall segment (10); and the upper surface of the bottom structure of the top iron (5) is provided with a guide rail (11) so as to facilitate the integral transverse movement of the segment assembling equipment positioned on the top iron.
Further, the main body trolley (6) can transversely move on a guide rail (11) arranged on the upper surface of the bottom structure of the top iron (5); the telescopic arm (7) can vertically move on a frame of the main trolley (6) and can extend out of a segment assembling area to assist segment assembling; the front part of the telescopic arm (7) is provided with a bolt (12) for connecting and fixing the side wall duct piece (10), and the bolt can be inserted into a reserved hole on the side wall duct piece (10) to carry the side wall duct piece in place; the front part of the telescopic arm (7) is also provided with a bracket for supporting a pipe piece on the top of the jacking pipe.
Furthermore, longitudinal rails (13) are arranged at the lower parts of the top iron and splicing equipment area and the duct piece splicing area and are used for assisting the top iron (5) and the duct piece to be longitudinally jacked; a transverse track (15) for positioning a pipe piece (14) at the bottom of the pipe piece assembling area is arranged at the lower part of the pipe piece assembling area, a carrying trolley (16) capable of moving transversely is arranged on the transverse track (15), and the pipe piece (14) at the bottom of the pipe piece is moved transversely in place under the combined action of the carrying trolley (16) and a ground hoisting system (17); the longitudinal rails (13) are locally broken at the intersections with the transverse rails (15); the lower part of the segment assembling area is provided with a bottom jack (18), the bottom jack (18) can support and drop a segment (14) at the bottom of a jacking tube which is moved in place transversely, and the auxiliary carrying trolley (16) is withdrawn from the lower part of the segment (14) at the bottom of the jacking tube.
Furthermore, the carrying trolley (16) is provided with a lifting, rotating and telescopic mechanism, and can be withdrawn from the lower part of the pipe piece (14) at the bottom of the top pipe through the movement of the mechanism and avoid the pipe piece to a safe area.
Further, the construction process comprises the following steps:
a) lifting and lowering a pipe piece (14) at the bottom of the jacking pipe from an upper part reducing area (1) of the construction shaft, adjusting the posture, placing one end of the pipe piece on a carrying trolley (16) in a pipe piece assembling area, converting the vertical posture of the pipe piece (14) at the bottom of the jacking pipe into a horizontal posture for placing under the action of the carrying trolley (16), moving the pipe piece (14) at the bottom of the jacking pipe along a transverse guide rail (15) under the carrying of the carrying trolley (16), and conveying the pipe piece (14) at the bottom of the jacking pipe to an appointed position;
b) after the pipe piece (14) at the bottom of the jacking pipe is conveyed to a designated position, a bottom jack (18) at the lower part of the pipe piece assembling area supports the pipe piece (14) at the bottom of the jacking pipe which is transversely moved in place, and the carrying trolley (16) falls down again after being withdrawn from the lower part of the pipe piece (14) at the bottom of the jacking pipe and avoiding to a safety area, and places the pipe piece (14) at the bottom of the jacking pipe in place;
c) the method comprises the following steps that a side wall duct piece (10) is lifted and lowered down by a construction vertical shaft in a vertical posture, at the moment, a duct piece assembling equipment main body trolley (6) moves along a guide rail (11) of the side wall duct piece, a telescopic arm (7) on the side wall duct piece (10) is extended out after the side wall duct piece is close to the side wall duct piece, a plug pin (12) at the front end of the plug pin is inserted into a reserved hole in the side wall duct piece (10), the side wall duct piece (10) is in place along with the movement of the assembling equipment main body trolley (6) and is spliced with a duct piece (14) at the bottom of a top pipe, and the top pipe side wall duct piece (10);
d) after the side wall duct piece (10) is in place, the side wall duct piece fixing device (9) located inside the top iron (5) rotates and fixes the side wall duct piece (10), and the telescopic arm (7) retracts and moves back to the original position;
e) lifting and lowering a pipe piece (19) at the top of the jacking pipe from an upper part reducing area (1) of a construction vertical shaft in a vertical posture, extending a telescopic arm (7) to a pipe piece assembling area and extending into a top corner part of the pipe piece (19) at the top of the jacking pipe, and adjusting the posture of the pipe piece through up-and-down movement of the telescopic arm (7) and transverse movement of a main trolley (6) of pipe piece assembling equipment to place the pipe piece (19) at the top of the jacking pipe at an appointed position;
f) after all the segments are placed at the designated positions, splicing and fixing the segments according to different connection modes of the segments, and arranging waterproof measures according to requirements;
g) after the segments are completely spliced and a perfect sealed water-stop pipe joint is formed, jacking by using corresponding pipe jacking equipment such as a jacking jack (4), a reaction wall (3) and the like;
h) after the jacking of the previous pipe joint is finished, the jacking jack (4), the jacking iron (5) and the pipe piece assembling equipment are retracted to the initial position;
i) and repeating all the steps to assemble and jack the segment of the next pipe section.
Compared with the prior art, the pipe jacking and splicing system for the necking shaft has the following advantages:
a pipe jacking and assembling system for a necking shaft is characterized in that the system is positioned in a pipe jacking starting area and comprises a construction shaft and a pipe jacking area connected with the construction shaft; the construction shaft comprises an upper shrinking area (1) close to the ground and a lower expanding area (2); a jack and counterforce wall area, a top iron and splicing equipment area and a segment splicing area are arranged in the lower expansion area (2) of the construction shaft; each pipe section of the jacking pipe is formed by assembling a plurality of pipe pieces, and the pipe pieces are adjusted in posture after passing through the upper part shrinking area of the construction shaft and are assembled in the lower part expanding area of the construction shaft; the jack and the reaction wall area comprise a reaction wall (3) and a jacking jack (4) for jacking the jacking pipe; the jacking iron and assembling equipment area comprises jacking iron (5) used for assisting the jacking of the pipe joint and pipe piece assembling equipment positioned in the space of the jacking iron; a main body trolley (6) of the segment assembling equipment is positioned in the inner space of the top iron (5), a telescopic arm (7) is arranged on the main body trolley (6), and the telescopic arm (7) can extend out of a segment assembling area to assist segment assembling; the segment assembling area is used for adjusting and assembling the posture of the segments; after the pipe pieces are assembled completely, the pipe pieces are fixedly connected in an appointed mode, corresponding waterproof measures are arranged, after an integral complete pipe joint is formed, the pipe joint is jacked into the tunnel through a jacking jack (4) and a reaction wall (3), and the whole process of jacking pipe assembly and jacking is completed.
Due to the adoption of the pipe jacking assembly system construction of the necking shaft, the excavation method reduces the floor area of the construction shaft on the ground, so that the influence on urban construction is small during construction, all road traffic can not be blocked, vehicles can still pass, and the damage and the influence on ground infrastructure can also be reduced. And the pipe jacking assembly system and the assembly method adopting the necking shaft can solve the problem of difficult transportation caused by overlarge duct piece size, reduce the construction cost, facilitate construction, improve the construction efficiency and effectively save part of construction period.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a side view of the jacking pipe in the jacking direction;
FIG. 2 is a top view of the duct pieces at the bottom of the top duct;
FIG. 3 is a top view (with the top duct pieces assembled and the side duct pieces being assembled);
FIG. 4 is a front view of the jacking pipe in the jacking direction;
FIG. 5 is a schematic diagram of the hoisting process of the duct piece at the bottom of the top duct (the duct piece at the bottom of the top duct is sliding transversely and adjusting the posture);
FIG. 6 is a schematic diagram of the process of hoisting the duct piece at the bottom of the jacking pipe (the duct piece at the bottom of the jacking pipe slides transversely in place, and the carrying trolley is withdrawn);
FIG. 7 is a schematic view of a process of hoisting a segment on the top of a jacking pipe;
description of reference numerals:
1. constructing a reduced area at the upper part of the vertical shaft; 2. constructing an expanded area at the lower part of the vertical shaft; 3. a counterforce wall; 4. jacking a jack; 5. carrying out iron jacking; 6. a main body trolley; 7. a telescopic arm; 8. a steel form; 9. a sidewall segment fixing device; 10. a sidewall segment; 11. a guide rail; 12. a bolt; 13. a longitudinal rail; 14. a duct piece at the bottom of the jacking pipe; 15. a transverse rail; 16. carrying the trolley; 17. a ground hoisting system; 18. a bottom jack; 19. the top of the pipe piece is the top pipe piece.
Detailed Description
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-7, the invention provides a pipe jacking and splicing system for a necking shaft, which is located in a pipe jacking initial area and comprises a construction shaft and a pipe jacking area connected with the construction shaft; the construction shaft comprises an upper shrinking area (1) close to the ground and a lower expanding area (2); a jack and counterforce wall area, a top iron and splicing equipment area and a segment splicing area are arranged in the lower expansion area (2) of the construction shaft; each pipe section of the jacking pipe is formed by assembling a plurality of pipe pieces, and the pipe pieces are adjusted in posture after passing through the upper part shrinking area of the construction shaft and are assembled in the lower part expanding area of the construction shaft; the jack and the reaction wall area comprise a reaction wall (3) and a jacking jack (4) for jacking the jacking pipe; the jacking iron and assembling equipment area comprises jacking iron (5) used for assisting the jacking of the pipe joint and pipe piece assembling equipment positioned in the space of the jacking iron; a main body trolley (6) of the segment assembling equipment is positioned in the inner space of the top iron (5), a telescopic arm (7) is arranged on the main body trolley (6), and the telescopic arm (7) can extend out of a segment assembling area to assist segment assembling; the segment assembling area is used for adjusting and assembling the posture of the segments; after the pipe pieces are assembled completely, the pipe pieces are fixedly connected in an appointed mode, corresponding waterproof measures are arranged, after an integral complete pipe joint is formed, the pipe joint is jacked into the tunnel through a jacking jack (4) and a reaction wall (3), and the whole process of jacking pipe assembly and jacking is completed.
Furthermore, the steel templates (8) extending into the segment assembly area are arranged on the outer sides of the top irons (5), the steel templates (8) can assist in positioning the segments when the pipe-jacking segments are assembled, and the side wall segments (10) can be quickly positioned only by tightly attaching the outer sides of the side wall segments (10) to the steel templates (8); the inner side of the top iron (5) comprises a side wall segment fixing device (9) which can rotate and enter the segment assembling area, and after the side wall segment (10) is in place, the side wall segment fixing device (9) is tightly contacted with the side wall segment (10) to fix the side wall segment, so that the side wall segment (10) cannot be shifted to cause dislocation and incapability of assembling when the top segment (19) is assembled later; the guide rail (11) is arranged on the upper surface of the bottom structure of the top iron (5) so as to facilitate the integral transverse movement of the segment assembling equipment positioned on the guide rail, and facilitate the receiving, placing and assembling of the side wall segment (10) and the top segment (19) of the top of the jacking pipe.
Further, the main body trolley (6) can transversely move on a guide rail (11) arranged on the upper surface of the bottom structure of the top iron (5); the telescopic arm (7) can vertically move on a frame of the main trolley (6) and can extend out of a segment assembling area to assist segment assembling; the front part of the telescopic arm (7) is provided with a bolt (12) for connecting and fixing the side wall duct piece (10), and the bolt can be inserted into a reserved hole on the side wall duct piece (10) to carry the side wall duct piece in place; the front part of the telescopic arm (7) is also provided with a bracket for supporting a pipe piece at the top of the jacking pipe so as to assist the pipe piece (19) at the top to adjust the direction and assemble.
Furthermore, longitudinal rails (13) are arranged at the lower parts of the top iron and splicing equipment area and the duct piece splicing area and are used for assisting the top iron (5) and the duct piece to be longitudinally jacked; a transverse track (15) for positioning a pipe piece (14) at the bottom of the pipe piece assembling area is arranged at the lower part of the pipe piece assembling area, a carrying trolley (16) capable of moving transversely is arranged on the transverse track (15), and the pipe piece (14) at the bottom of the pipe piece is moved transversely in place under the combined action of the carrying trolley (16) and a ground hoisting system (17); the longitudinal rails (13) are locally broken at the intersections with the transverse rails (15); the pipe piece assembling area lower part is provided with a bottom jack (18), the bottom jack (18) can support and fall a pipe piece (14) at the bottom of a jacking pipe which is moved in place transversely, the auxiliary carrying trolley (16) is withdrawn from the lower part of the pipe piece (14) at the bottom of the jacking pipe, after the carrying trolley (16) is placed, the bottom jack (18) falls down, and the pipe piece (14) at the bottom is placed at a designated position.
Furthermore, the carrying trolley (16) is provided with a lifting, rotating and telescopic mechanism, and can be withdrawn from the lower part of the pipe piece (14) at the bottom of the top pipe through the movement of the mechanism and avoid the pipe piece to a safe area.
Further, the construction process comprises the following steps:
a) lifting and lowering a pipe piece (14) at the bottom of the jacking pipe from an upper part reducing area (1) of the construction shaft, adjusting the posture, placing one end of the pipe piece on a carrying trolley (16) in a pipe piece assembling area, converting the vertical posture of the pipe piece (14) at the bottom of the jacking pipe into a horizontal posture for placing under the action of the carrying trolley (16), moving the pipe piece (14) at the bottom of the jacking pipe along a transverse guide rail (15) under the carrying of the carrying trolley (16), and conveying the pipe piece (14) at the bottom of the jacking pipe to an appointed position;
b) after the pipe piece (14) at the bottom of the jacking pipe is conveyed to a designated position, a bottom jack (18) at the lower part of the pipe piece assembling area supports the pipe piece (14) at the bottom of the jacking pipe which is transversely moved in place, and the carrying trolley (16) falls down again after being withdrawn from the lower part of the pipe piece (14) at the bottom of the jacking pipe and avoiding to a safety area, and places the pipe piece (14) at the bottom of the jacking pipe in place;
c) the method comprises the following steps that a side wall duct piece (10) is lifted and lowered down by a construction vertical shaft in a vertical posture, at the moment, a duct piece assembling equipment main body trolley (6) moves along a guide rail (11) of the side wall duct piece, a telescopic arm (7) on the side wall duct piece (10) is extended out after the side wall duct piece is close to the side wall duct piece, a plug pin (12) at the front end of the plug pin is inserted into a reserved hole in the side wall duct piece (10), the side wall duct piece (10) is in place along with the movement of the assembling equipment main body trolley (6) and is spliced with a duct piece (14) at the bottom of a top pipe, and the top pipe side wall duct piece (10);
d) after the side wall duct piece (10) is in place, the side wall duct piece fixing device (9) located inside the top iron (5) rotates and fixes the side wall duct piece (10), and the telescopic arm (7) retracts and moves back to the original position;
e) lifting and lowering a pipe piece (19) at the top of the jacking pipe from an upper part reducing area (1) of a construction vertical shaft in a vertical posture, extending a telescopic arm (7) to a pipe piece assembling area and extending into a top corner part of the pipe piece (19) at the top of the jacking pipe, and adjusting the posture of the pipe piece through up-and-down movement of the telescopic arm (7) and transverse movement of a main trolley (6) of pipe piece assembling equipment to place the pipe piece (19) at the top of the jacking pipe at an appointed position;
f) after all the segments are placed at the designated positions, splicing and fixing the segments according to different connection modes of the segments, and arranging waterproof measures according to requirements; if the connection is in a plug-in mode, after each segment is placed at an appointed position and the position is confirmed to be correct and not to have deviation, plug-in connection is carried out; if the connection is in a splicing bolt mode, after each segment is placed at an appointed position and the position is confirmed to be correct and not deviated, bolt connection and fixation are carried out;
g) after the segments are completely spliced and a perfect sealed water-stop pipe joint is formed, jacking by using corresponding pipe jacking equipment such as a jacking jack (4), a reaction wall (3) and the like;
h) after the jacking of the previous pipe joint is finished, the jacking jack (4), the jacking iron (5) and the pipe piece assembling equipment are retracted to the initial position;
i) and repeating all the steps to assemble and jack the segment of the next pipe section.
Claims (6)
1. A pipe jacking and assembling system for a necking shaft is characterized in that the system is positioned in a pipe jacking starting area and comprises a construction shaft and a pipe jacking area connected with the construction shaft; the construction shaft comprises an upper part shrinking area and a lower part expanding area which are close to the ground; a jack and counterforce wall area, a top iron and splicing equipment area and a segment splicing area are arranged in the lower expansion area of the construction shaft; each pipe section of the jacking pipe is formed by assembling a plurality of pipe pieces, and the pipe pieces are adjusted in posture after passing through the upper part shrinking area of the construction shaft and are assembled in the lower part expanding area of the construction shaft; the jack and the reaction wall area comprise a reaction wall and a jacking jack for jacking the jacking pipe; the jacking iron and assembling equipment area comprises jacking irons for assisting in jacking the pipe joints and pipe piece assembling equipment positioned in the space of the jacking irons; a main trolley of the duct piece assembling equipment is positioned in the internal space of the top iron, and a telescopic arm is arranged on the main trolley and can extend out of a duct piece assembling area to assist in assembling duct pieces; the segment assembling area is used for adjusting and assembling the posture of the segments; after the pipe pieces are assembled completely, the pipe pieces are fixedly connected in an appointed mode, corresponding waterproof measures are arranged, after an integral complete pipe joint is formed, the pipe joint is jacked into the tunnel through a jacking jack and a counterforce wall, and the whole process of jacking pipe assembly and jacking is completed.
2. The jacking pipe assembling system for the necking shaft of claim 1, wherein the outer side of the jacking iron comprises a steel template extending into a pipe piece assembling area, and the steel template can assist in positioning pipe pieces during pipe piece assembling of the jacking pipes; the inner side of the top iron comprises a side wall segment fixing device which can rotate and enter the segment assembling area, and after the side wall segment is in place, the side wall segment is fixed through the close contact of the side wall segment fixing device and the side wall segment; and the upper surface of the structure at the bottom of the top iron is provided with a guide rail so as to facilitate the integral transverse movement of the segment assembling equipment positioned on the guide rail.
3. The pipe jacking system for the throat shaft of claim 1, wherein the main body trolley is capable of moving laterally on a guide rail provided on an upper surface of a roof iron substructure; the telescopic arm can vertically move on a frame of the main trolley and can extend out of a segment assembling area to assist segment assembling; the front part of the telescopic arm is provided with a bolt for connecting and fixing the side wall duct piece, and the bolt can be inserted into a reserved hole in the side wall duct piece to carry the side wall duct piece in place; the front part of the telescopic arm is also provided with a bracket for supporting a pipe piece at the top of the jacking pipe.
4. The pipe jacking and splicing system for the necking shaft as claimed in claim 1, wherein longitudinal rails are arranged at the lower parts of the top iron and splicing equipment area and the pipe piece splicing area for assisting the longitudinal jacking of the top iron and the pipe piece; a transverse track for positioning the pipe piece at the bottom of the pipe piece assembly area is arranged at the lower part of the pipe piece assembly area, a carrying trolley capable of transversely moving is arranged on the transverse track, and the pipe piece at the bottom of the pipe piece is transversely moved in place under the combined action of the carrying trolley and a ground hoisting system; the longitudinal rails are locally disconnected at the intersections with the transverse rails; the lower part of the segment assembling area is provided with a bottom jack, the bottom jack can support and drop a segment at the bottom of a top pipe which is moved in place transversely, and the auxiliary carrying trolley is withdrawn from the lower part of the segment at the bottom of the top pipe.
5. The pipe jacking system for the necking shaft of claim 1, wherein the carrying trolley is provided with a lifting, rotating and telescoping mechanism, and can be withdrawn from the lower part of the pipe piece at the bottom of the pipe jacking through the movement of the lifting, rotating and telescoping mechanism and avoid the pipe jacking system into a safe area.
6. A pipe jacking and splicing method for a necking shaft is characterized by comprising the following steps:
a) lifting and lowering a vertical posture of a pipe piece at the bottom of the jacking pipe from an upper part reduction area of the construction vertical shaft, adjusting the posture, placing one end of the pipe piece on a carrying trolley in a pipe piece assembling area, converting the vertical posture of the pipe piece at the bottom of the jacking pipe into a horizontal posture for placing under the action of the carrying trolley, moving the pipe piece at the bottom of the jacking pipe along a transverse guide rail under the carrying of the carrying trolley, and conveying the pipe piece at the bottom of the jacking pipe to an appointed position;
b) after the pipe piece at the bottom of the jacking pipe is conveyed to the designated position, the pipe piece at the bottom of the assembly area of the pipe pieces of the jacking pipe supports the pipe piece at the bottom of the jacking pipe which is transversely moved in place by a bottom jack, and the pipe piece at the bottom of the jacking pipe falls down again after the carrying trolley is withdrawn from the lower part of the pipe piece at the bottom of the jacking pipe and is avoided to the safety area, and the pipe piece at the bottom of the jacking pipe;
c) the side wall duct piece is lifted and lowered down by a construction vertical shaft in a vertical posture, at the moment, a duct piece assembling equipment main body trolley moves along a guide rail of the trolley, a telescopic arm on the trolley extends out after the trolley approaches the side wall duct piece, a bolt at the front end of the trolley is inserted into a reserved hole in the side wall duct piece, the side wall duct piece is in place along with the movement of the assembling equipment main body trolley and is spliced with a duct piece at the bottom of a jacking pipe, and the side wall duct piece of the jacking pipe is limited by a steel template outside a jacking iron for;
d) after the side wall duct piece is in place, the side wall duct piece fixing device positioned in the top iron rotates and fixes the side wall duct piece, and the telescopic arm retracts and moves back to the original position;
e) lifting and lowering a pipe piece at the top of the jacking pipe from an upper part reduction area of the construction vertical shaft in a vertical posture, extending a telescopic arm to a pipe piece assembling area and extending into a top corner part of the pipe piece at the top of the jacking pipe, and adjusting the posture of the pipe piece through up-and-down movement of the telescopic arm and transverse movement of a trolley of a main body of pipe piece assembling equipment to place the pipe piece at the top of the jacking pipe at an appointed position;
f) after all the segments are placed at the designated positions, splicing and fixing the segments according to different connection modes of the segments, and arranging waterproof measures according to requirements;
g) after the segments are completely spliced and a perfect pipe joint for sealing and stopping water is formed, jacking by using corresponding jacking equipment such as a jacking jack, a reaction wall and the like;
h) after the jacking of the previous pipe joint is finished, the jacking jack, the jacking iron and the pipe piece assembling equipment are retracted to the initial position;
i) and repeating all the steps to assemble and jack the segment of the next pipe section.
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| CN201911270438.0A CN110748362B (en) | 2019-12-12 | 2019-12-12 | A kind of vertical shaft of necking down pipe jacking assembling system and pipe jacking assembling method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112211640A (en) * | 2020-11-16 | 2021-01-12 | 北京中岩智泊科技有限公司 | Pipe jacking construction system and method adopting vertical shaft and transverse channel conversion |
| CN113685200A (en) * | 2021-09-07 | 2021-11-23 | 浙江数智交院科技股份有限公司 | Two-lining pushing construction method for highway tunnel |
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| JP2008190222A (en) * | 2007-02-05 | 2008-08-21 | Okumura Corp | Traverse truck for jacking pipe in start shaft |
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| CN110748362B (en) | 2024-08-02 |
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