CN117662178B - Ultra-shallow buried large-section underground passage pushing system and method - Google Patents
Ultra-shallow buried large-section underground passage pushing system and method Download PDFInfo
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- CN117662178B CN117662178B CN202311872646.4A CN202311872646A CN117662178B CN 117662178 B CN117662178 B CN 117662178B CN 202311872646 A CN202311872646 A CN 202311872646A CN 117662178 B CN117662178 B CN 117662178B
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- pipe
- pipe shed
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000010276 construction Methods 0.000 claims abstract description 37
- 238000009412 basement excavation Methods 0.000 claims abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 143
- 239000010959 steel Substances 0.000 claims description 143
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 48
- 235000000396 iron Nutrition 0.000 claims description 48
- 239000002689 soil Substances 0.000 claims description 23
- 239000002002 slurry Substances 0.000 claims description 19
- 229910052742 iron Inorganic materials 0.000 claims description 16
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 238000005553 drilling Methods 0.000 claims description 15
- 238000005520 cutting process Methods 0.000 claims description 10
- 238000012546 transfer Methods 0.000 claims description 6
- 239000004567 concrete Substances 0.000 claims description 5
- 239000011440 grout Substances 0.000 claims description 5
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 5
- 230000005484 gravity Effects 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000013461 design Methods 0.000 description 10
- 230000001681 protective effect Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000013508 migration Methods 0.000 description 4
- 238000004062 sedimentation Methods 0.000 description 3
- 238000004873 anchoring Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance 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
- 239000011378 shotcrete Substances 0.000 description 1
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- Excavating Of Shafts Or Tunnels (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
The invention belongs to the technical field of underground passage construction, and particularly relates to an ultra-shallow buried large-section underground passage pushing system and method. The pushing system can safely and continuously and circularly push the box culvert under the condition of not interrupting road traffic, so that the box culvert can enter a preset position by matching with excavation, the efficiency is improved, and the probability of on-site operation accidents is reduced; the invention prevents the lateral shifting in the construction process; the invention improves the construction efficiency of the pipe shed by a traction process method; the invention can increase stability and prevent large-area collapse.
Description
Technical Field
The invention belongs to the technical field of underground passage construction, and particularly relates to an ultra-shallow buried large-section underground passage pushing system and method.
Background
Underground passageway construction refers to engineering processes that build or construct transit or transit facilities in an underground structure. The pipe shed construction of the underground passage is to ensure the stability, safety and sustainability of the underground passage. The supporting structure is more critical due to the particularities of the underground passage. The method of shotcrete, steel frame support and the like is generally adopted to ensure the stability and safety of the underground space. The underground passage pipe shed construction can protect constructors and equipment from collapse, geological disasters and other risks, improves the safety of construction, and meanwhile does not interrupt the running of ground vehicles.
The China patent with the application number of CN219953341U provides a pushing tunnel structure of a diagonal underpass expressway, which comprises a pushing box culvert unit, wherein the pushing box culvert unit comprises a plurality of pushing box culverts which are sequentially arranged along the extending direction of a pushing tunnel, the angle between the extending direction of the pushing tunnel and the expressway is a underpass crossing angle, the section of the pushing box culvert along a horizontal plane is a parallelogram, the included angle between the inclined plane of the pushing box culvert and the extending direction of the pushing tunnel is a pushing inclined angle, the pushing inclined angle is an acute angle of the parallelogram, and the pushing inclined angle is larger than the underpass crossing angle. Therefore, the calculated span of the whole pushing box culvert is reduced by increasing the inclination angle of the pushing box culvert, the problems of increased thickness of the top plate, reduced thickness of the structure covering soil layer and the like caused by large calculated span are solved, the influence on the safety and driving of the structure of the crossed expressway during the jacking construction of the box culvert is effectively controlled, and the safety of the jacking construction is improved.
When the box culvert pushing is applied, potential safety hazards are often generated due to the unstable action of the force application device, and meanwhile, when the supporting points are installed, the construction is slow and the efficiency is low due to the fact that the operation is troublesome; in the underground passage construction process, how to construct without interrupting road traffic and without side shifting and other safety accidents is an important point to be solved.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides the ultra-shallow buried large-section underground passage pushing system and the method, and the pushing system can be used for carrying out continuous and cyclic pushing on the box culvert under the condition of not interrupting road traffic so as to realize that the box culvert enters a preset position by matching with excavation, thereby improving the efficiency and reducing the probability of on-site operation accidents; the invention prevents the lateral shifting in the construction process; the invention improves the construction efficiency of the pipe shed by a traction process method; the invention can increase stability and prevent large-area collapse; the invention improves the efficiency of the relative displacement of the front box culvert and the rear box culvert and improves the stress stability.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
The utility model provides an ultra-shallow large section underground passage pushing system that buries, includes back stake, a plurality of back stake buries the underground of roadside working pit one end, the top of back stake is fixed with the crown beam jointly, one side of back stake is fixed with back wall, one side fixed butt of back wall has a top iron structure, top iron structure and hydraulic means butt, the top of top iron structure is equipped with the unloader that can place the top iron, hydraulic means fixes the bottom at the box culvert.
Further, the top iron structure comprises long top irons, one ends of a plurality of the long top irons are abutted against the back wall, and the other ends of the long top irons are fixedly provided with cross beams together; the top iron structure further comprises short top irons, wherein the two ends of the short top irons are provided with notches with opposite directions, the notches at the two ends of the short top irons are mutually spliced to form a plurality of groups, and the two ends of each group of short top irons are abutted against the cross beam; the hydraulic device comprises a hydraulic cylinder, wherein the hydraulic cylinder is fixedly arranged on a bracket, and the bracket is fixedly connected with the box culvert; the output end of the hydraulic cylinder is provided with a U-shaped groove through a bolt, and the U-shaped groove is mutually spliced with the notch of the adjacent short top iron.
Further, the blanking device comprises a feed box with upper and lower openings, the feed box is positioned on one side close to the hydraulic device and right above the short top iron, Z-shaped supporting feet are fixedly connected to the periphery of the bottom of the feed box, and the bottom of the Z-shaped supporting feet is fixedly connected with the ground through bolts; the inside of workbin can stack a plurality of short top irons, the fixed charge door that is equipped with of top of workbin.
Further, the device comprises a pipe shed which is inserted into the roadbed and is positioned below the road surface; the pipe shed comprises first pipe shed steel pipes and second pipe shed steel pipes, wherein a plurality of the first pipe shed steel pipes are horizontally and uniformly distributed, the distribution direction is the same as the direction of a road surface lane, and the first pipe shed steel pipes are perpendicular to the direction of the road surface lane; two rows of second pipe shed steel pipes are vertically and uniformly distributed, and the second pipe shed steel pipes at the top end of each row are respectively positioned below the first pipe shed steel pipes at the left end and the right end to form a shed-shaped structure; the first pipe shed steel pipe and the second pipe shed steel pipe are parallel to each other; the two ends of the pipe shed are respectively abutted to the door frames, and the door frames are positioned on the outer sides of the pavement.
Further, the door frame comprises two upright posts, the upright posts are inserted into the roadbed, a pile cap is fixed at the top end of each upright post, a door frame post is fixed at the top end of each pile cap, and the second pipe-shed steel pipe is abutted to the door frame post; the top ends of two door frame columns positioned on the same side of the pavement are jointly fixed with a door frame beam, and the first pipe shed steel pipe is abutted against the door frame beam; one side of the door frame, which is far away from the pipe shed, is provided with an anti-moving structure, the anti-moving structure comprises anti-moving piles, a plurality of anti-moving piles are inserted on the roadbed, and the anti-moving piles are uniformly distributed along the lane direction of the roadbed; the top of many anti-moving piles is fixed with anti-moving beam jointly, the one side that anti-moving beam is close to the pipe canopy is fixed with many anti-moving support columns, many anti-moving support columns level evenly lay and with adjacent door frame roof beam fixed connection.
Furthermore, the periphery of the pipe shed is provided with a protection structure, and the protection structure is positioned at the outer side of the pavement; the protection structure comprises a first road base protection pile, wherein a plurality of first road base protection piles are inserted into the roadbed and are uniformly distributed along the road surface lane direction; the inner side of the first road base protective pile close to the door frame is also provided with a second roadbed protective pile, and the top of the first road base protective pile and the top of the second roadbed protective pile of each protective structure are jointly fixed with a protective beam.
Further, the hydraulic device comprises a front box culvert and a rear box culvert, wherein the rear box culvert is fixedly connected with the hydraulic device, and a relay is reserved between the front box culvert and the rear box culvert; the front box culvert is close to a top plate, a side plate and a bottom plate of one end of the relay, a second butt strap is arranged on the bottom plate of one end of the rear box culvert close to the relay, and a third butt strap is arranged on the top plate and the side plate of one end of the rear box culvert close to the relay; the second butt strap and the third butt strap are both in sliding connection with the corresponding adjacent first butt strap;
the lifting jack groove is formed in a bottom plate at one end of the front box culvert, which is close to the relay, a plurality of supporting frames are uniformly arranged on the lifting jack groove, and lifting jacks are fixedly arranged on the supporting frames.
Further, a plurality of anchor bars are uniformly welded on the inner wall of one side of the first butt strap close to the front box culvert; one side of the first butt strap, which is close to the front box culvert, and the anchor bars on the first butt strap are pre-buried together and fixed on the outer wall of the front box culvert, and the outer wall of the first butt strap is flush with the outer wall of the corresponding front box culvert.
Further, the second access plate comprises a second end steel plate and a second side steel plate, and one end of the second end steel plate is vertically and fixedly welded with one end of the second side steel plate; the second end steel plate is pre-buried and fixed at the end part of the bottom plate of the rear box culvert; a plurality of anchor bars are uniformly welded on the inner wall of the second side steel plate; a first reserved groove is formed in the bottom side of the bottom plate of the rear box culvert, and the second side steel plate and the anchor steel bars on the second side steel plate are pre-buried and fixed on the first reserved groove together;
the first butt strap located at the bottom plate of the front box culvert extends into the first reserved groove to be in sliding connection with the second lateral steel plate, and the outer wall of the corresponding first butt strap is flush with the bottom plate bottom side of the rear box culvert.
Further, the third butt strap is pre-buried and fixed at the top plate end part and the side plate end part of the rear box culvert; the outer walls of the top plate and the side plates of the rear box culvert are respectively provided with a second reserved groove; the first butt strap is located in the front box culvert top plate and the side plate and is in sliding connection with the corresponding second reserved groove, and the top plate outer wall and the side plate outer wall of the rear box culvert are flush with the outer wall of the corresponding first butt strap.
Further, one end of the third access plate is in sliding connection with the inner wall of the corresponding adjacent first access plate.
Further, the support frame comprises an L-shaped steel plate, the L-shaped steel plate is fixed on the jack groove in a pre-buried mode, supporting steel bars are symmetrically fixed on the L-shaped steel plate, and the jack is fixedly installed on the L-shaped steel plate.
Further, one end of the front box culvert far away from the rear box culvert is fixedly provided with a beam type steel cutting edge, the beam type steel cutting edge comprises a top plate steel quilting frame and a plurality of pier column steel quilting frames, the top of the top plate steel quilting frame is welded with a top plate, the front end of the top plate is fixedly connected with a plurality of first saw tooth blocks, and the rear end of the top plate extends out of the top plate steel quilting frame; a bottom panel is welded on the front side of the bottom of the top plate steel quilting frame, a plurality of pier column steel quilting frames are welded at the bottom of the bottom panel, and the pier column steel quilting frames are uniformly arranged at intervals; the front end of the bottom panel is positioned outside the pier column steel quilting frame, and the bottom of the pier column steel quilting frame is welded with the pier column bottom panel;
a first side panel is welded on two sides of the top plate steel quilting frame, and the front end of the first side panel is fixedly connected with a plurality of second saw tooth blocks; the pier column steel quilting frame is characterized in that second side panels are welded on two sides of the pier column steel quilting frame, and a plurality of third saw-tooth blocks are fixedly connected to the front ends of the second side panels.
Further, the roof steel quilting frame comprises a plurality of roof longitudinal bars which are uniformly arranged side by side, and a bottom plate longitudinal bar is arranged below each roof longitudinal bar; the two adjacent top plate longitudinal rods are fixedly welded through a plurality of top plate transverse rods, and the two adjacent bottom plate longitudinal rods are fixedly welded through a plurality of bottom plate transverse rods; the adjacent top plate longitudinal rods and the bottom plate longitudinal rods are fixedly welded through a plurality of first connecting rods; the rear ends of the bottom plate longitudinal bars are fixedly welded with a cross beam together, and the rear end of each top plate longitudinal bar is fixedly welded with the cross beam through a second tie bar.
Still further, the pier column steel quilting frame comprises two symmetrically arranged side plate frames, wherein each side plate frame comprises a first side plate vertical rib, a second side plate vertical rib and a third side plate vertical rib which are all obliquely arranged, and the included angles between the first side plate vertical rib, the second side plate vertical rib and the third side plate vertical rib and the ground are continuously reduced, and are 64-73 degrees; a plurality of lateral plate transverse ribs are welded among the first lateral plate vertical ribs, the second lateral plate vertical ribs and the third lateral plate vertical ribs; a plurality of third tie bars are welded between the adjacent lateral plate transverse ribs corresponding to the two lateral plate frames, and pier stud compartment plates are welded on the third tie bars between the adjacent lateral plate transverse ribs corresponding to the two lateral plate frames.
Still further, the one end that first curb plate erects the rib and the second curb plate erects the rib and keep away from pier stud bottom plate all with the fixed welding of bottom surface board, the one end that the third curb plate erects the rib and keep away from pier stud bottom plate and fixed welding of crossbeam.
Still further, the rear end of first sawtooth piece passes through bolt and top panel fixed connection, first sawtooth piece is a plurality of continuous long sawtooth piece and a plurality of continuous short sawtooth piece circulation interval distribution.
Further, the rear end of the second sawtooth block is fixedly connected with the first side panel through a bolt.
Further, the rear end of the third sawtooth block is fixedly connected with the second side panel through a bolt, and the third sawtooth block is formed by circularly and alternately distributing a plurality of continuous long sawtooth blocks and a plurality of continuous short sawtooth blocks.
Further, the distance between the adjacent pier column steel quilting frames is 3.5-5 meters.
A pushing method utilizing the ultra-shallow buried large-section underground passage pushing system comprises the following steps:
S1, excavating a working pit on one side of a pavement, installing back piles and back walls in a roadbed at one end of the working pit far away from the pavement, installing roadbed protection piles and upright post piles of a door frame in the roadbed around the pavement where a pipe shed is constructed, installing pile caps on the upright post piles of the door frame, and installing protection beams on the roadbed protection piles; installing an anti-moving pile in the roadbed at one side of the pavement far from the working pit, and filling grout and rubble at one side of the anti-moving pile far from the pavement;
S2, constructing a pipe shed, fixing a drilling machine on a working pit foundation through a ground anchor seat and a rear support, adjusting a drill rod, drilling the drill rod into the center of a pipe position designed at a construction position of the pipe shed, drilling along a horizontal straight line, simultaneously pouring slurry into the drill rod, and spraying the slurry from a drill bit to form a small cavity; after a drill rod drills out from a designed pipe position, connecting one end of a drill bit with a pipeline through a transfer case, adjusting the drill bit to enlarge the diameter expansion range of the drill bit, pulling back the pipeline in a traction mode, drilling the drill rod in the opposite direction in the pulling back process, simultaneously pouring slurry, and reaming a small cavity to form a large cavity; after the pipeline is pulled back to a preset position, the transfer case is disassembled, one end of the pipeline is blocked, and concrete is poured on the other end of the pipeline, so that pipe shed construction is realized; after the pipe shed is in place, installing a door frame column on a pile cap of the upright post pile, jointly installing door frame beams on the door frame column on the same side, abutting the pipe shed through the door frame column and the door frame beams, then installing an anti-moving beam on the anti-moving pile, and fixedly installing an anti-moving support column between the anti-moving beam and the adjacent door frame beam;
S3, prefabricating a box culvert on a working pit, installing a plurality of long top irons on one side of a back wall, fixing the plurality of long top irons with a cross beam, abutting the plurality of short top irons on one side of the cross beam, installing a blanking device above the short top irons, connecting a hydraulic device at one end of the box culvert with the short top irons, operating a jack between relays to push forward the front box culvert, sequentially pushing forward according to the sequence of the box culverts, pushing forward the final box culvert through the hydraulic device, retracting an output end of a hydraulic cylinder, pulling the short top irons forward through a U-shaped groove, and moving the short top irons of the blanking device downwards by gravity after the pulling and splicing with the short top irons in front;
S4, when the front box culvert is pushed forward, the front box culvert is inserted into a soil layer under the pipe shed through the beam type steel blade feet, then the front box culvert is excavated and carried out in the beam type steel blade feet, and then the pushing operation is carried out after the front box culvert is excavated, so that the front box culvert is continuously circulated.
Further, the slurry comprises the following components in percentage by mass: expansive soil: 35% -45%, caustic soda: 0.5 to 0.8 percent of water: 65% -55% of the slurry is uniformly mixed before pouring.
Compared with the prior art, the invention has the following beneficial effects:
(1) The pushing system can safely and circularly push the box culvert continuously under the condition of not interrupting road traffic so as to realize that the box culvert enters a preset position in cooperation with excavation.
(2) According to the invention, the roadbed protection piles and the upright post piles of the door frame are arranged in the roadbed around the road surface at the construction position of the pipe shed, so that the two sides of the roadbed are reinforced, the roadbed is prevented from moving sideways in the construction process of the pipe shed and the jacking process of the subsequent box culvert, the stress surface of the roadbed is supported by the anti-moving piles and the structural design of filling grout rubble, the roadbed is further prevented from moving sideways, and then the pipe shed is constructed; the pipe shed is abutted through the structure of the door frame, so that the situation that the pipe shed moves sideways in the process of soil taking and box culvert jacking is prevented; simultaneously through the support of anti structure at the construction tail end, carry out fixed connection to the door frame through anti support column that moves, further prevent that the condition of side shifting from taking place in the work progress.
(3) When the pipe shed is constructed, drill cuttings are more easily discharged out of the hole by using slurry and a drill bit, so that an annular space is formed, the wall protection effect is achieved by expanding the components of soil, then the viscosity of the slurry is enhanced by combining caustic soda, and the forming and wall protection effects of the annular space are further improved.
(4) According to the invention, through working under the support of the pier column steel quilting frame and the roof plate steel quilting frame, the first saw-tooth block is cut into and then excavated, so that overexcavation and soil collapse are not caused, the loss of the upper soil is reduced, and the sedimentation risk of the expressway pavement is reduced; the second saw tooth block and the third saw tooth block can cut into soil bodies on two sides, so that the loss of the soil bodies on two sides is prevented, and the probability of collapse and sedimentation of the ultra-shallow buried large section is comprehensively reduced; according to the invention, through the structural design of the pier column steel quilting frame and the pier column partition plate, each layer of the pier column partition is sealed into an independent box chamber, once collapse phenomenon is found, the independent box chamber can be independently sealed, so that the stability is increased, and large-area collapse is prevented.
(5) According to the invention, the first butt strap on the front box culvert is in sliding connection with the second butt strap and the third butt strap corresponding to the rear box culvert, so that the friction of the bottom plate between the relays is the friction between the steel plates in the pushing construction process of the box culvert, the resistance of construction jacking is reduced to the maximum extent, and when a jack is put between the relays to perform pushing operation, the efficiency of relative displacement between the front box culvert and the rear box culvert is improved, and the box culvert is efficiently jacked into a designated position; through the pre-buried second tip steel sheet of back box culvert, make the jack atress better, through the pre-buried and the perpendicular setting of anchor reinforcing bar simultaneously, can also play firm effect to the tip of preceding box culvert and back box culvert when making first strap and second strap more firm, promote atress stability.
Drawings
FIG. 1 is a schematic view of a back support structure of the present invention;
FIG. 2 is a schematic diagram of a blanking device according to the present invention;
FIG. 3 is a schematic view of the distributing structure of the discharging device and the hydraulic device of the present invention;
FIG. 4 is a schematic view of a whole pipe shed supporting structure of the present invention;
FIG. 5 is a schematic view of a protective structure according to the present invention;
FIG. 6 is a schematic view of a pipe shed structure according to the present invention;
FIG. 7 is a schematic view of a door frame and anti-migration structure of the present invention;
FIG. 8 is a schematic diagram of a whole pipe shed supporting structure according to the present invention;
FIG. 9 is a front schematic view of the overall structure of the beam-type steel blade foot of the present invention;
FIG. 10 is a front partial schematic view of the overall structure of the beam-type steel blade foot of the present invention;
FIG. 11 is a schematic side view of a side portion of a beam-type steel blade foot of the present invention;
FIG. 12 is a side view of a second side panel structure of the present invention;
FIG. 13 is a schematic side view of a first side panel structure of the present invention;
FIG. 14 is a schematic view of a first saw tooth block according to the present invention;
FIG. 15 is a schematic top view of the roof steel quilting frame of the present invention;
FIG. 16 is a partial schematic view of a top view of the roof steel quilting frame of the present invention;
FIG. 17 is a schematic diagram of a base plate of the inter-relay structure of the present invention;
FIG. 18 is a schematic cross-sectional view of a relay structure according to the present invention;
FIG. 19 is a schematic view of the first and second straps of the inter-repeater structure of the present invention;
FIG. 20 is a schematic diagram of a cross-sectional structure of a relay structure according to the present invention;
Fig. 21 is a schematic view showing the structures of the first and third access plates of the inter-junction structure of the present invention.
The reference numerals are as follows:
Pier stud frames, 100; a side plate frame 110; a first side plate vertical rib 111; a second side panel vertical rib 112; a third side plate vertical rib 113; side plate cross ribs, 120; a third tie bar 130; pier stud bulkhead plates, 140; a top plate frame 200; a floor rail, 210; a top plate vertical bar 211; a first tie bar 230; a second tie bar 231; roof rails, 240; a floor rail 241; a first side panel 250; a second saw-tooth block 251; a first serration block 260; a top panel 261; a cross beam 270; pier column bottom panels, 280; a second side panel 300; a third serration block 310; a protective structure 400; first road base guard piles, 410; a second roadbed protection pile 420; a guard beam 430; a door frame 500; upright posts, 510; pile cap 520; a door frame post 530; a door frame beam 540; a pipe shed 600; a first pipe shed steel pipe 610; a second pipe shed steel pipe 620; an anti-migration structure 700; anti-displacement piles 710; an anti-migration beam 720; anti-migration support posts 730; a first strap, 1000; a second strap, 2000; a second end steel plate 2100; a second side steel plate 2200; a third strap, 3000; a support frame 4000; l-shaped steel plate 4100; receiving a reinforcing bar 4200; a jack, 5000; back post 6100; crown beam, 6200; rear back wall, 6300; long top iron, 7100; a long beam, 7200; short top iron, 7300; hydraulic means, 7400; a bracket 7410; a hydraulic cylinder 7420; u-shaped groove 7430; a blanking device, 8000; a bin, 8100; z-shaped supporting legs, 8200; feed inlet, 8300.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the following examples. Of course, the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Although the steps of the present invention are arranged by reference numerals, the order of the steps is not limited, and the relative order of the steps may be adjusted unless the order of the steps is explicitly stated or the execution of a step requires other steps as a basis. It is to be understood that the term "and/or" as used herein relates to and encompasses any and all possible combinations of one or more of the associated listed items.
Examples
As shown in fig. 1 to 21, an ultra-shallow buried large-section underground passage pushing system comprises a back pile 6100, wherein a plurality of back piles 6100 are buried underground at one end of a roadside working pit, a crown beam 6200 is jointly fixed at the top of each back pile 6100, a back wall 6300 is fixed at one side of each back pile 6100, a top iron structure is fixedly abutted to one side of each back wall 6300, the top iron structure is abutted to a hydraulic device 7400, a blanking device 8000 capable of placing top iron is arranged above the top iron structure, and the hydraulic device 7400 is fixed at the bottom of a box culvert.
Further, the top iron structure comprises a long top iron 7100, one ends of a plurality of long top irons 7100 are abutted against the back wall 6300, and long cross beams 7200 are fixed at the other ends of the long top irons; the top iron structure further comprises short top iron 7300, two ends of the short top iron 7300 are provided with notches with opposite directions, the notches at two ends of the short top iron 7300 are mutually spliced to form a plurality of groups, and two ends of each group of short top iron 7300 are abutted against the long cross beam 7200; the hydraulic device 7400 comprises a hydraulic cylinder 7420, the hydraulic cylinder 7410 is fixedly arranged on a bracket 7410, and the bracket 7410 is fixedly connected with a box culvert; the output end of the hydraulic cylinder 7420 is provided with a U-shaped groove 7430 through a bolt, and the U-shaped groove 7430 is mutually inserted with the notch of the adjacent short top iron 7300.
Further, the blanking device 8000 includes a feed box 8100 with an upper opening and a lower opening, the feed box 8100 is located at one side close to the hydraulic device 7400 and is located right above the short top iron 7300, Z-shaped supporting legs 8200 are fixedly connected around the bottom of the feed box 8100, and the bottom of the Z-shaped supporting legs 8200 is fixedly connected with the ground through bolts; a plurality of short top irons 7300 can be piled up in the feed box 8100, and an outward-opening feed inlet 8300 is fixedly arranged at the top of the feed box 8100.
The pushing system can safely and circularly push the box culverts continuously under the condition of not interrupting road traffic so as to realize that the box culverts enter a preset position in cooperation with excavation, the short top irons 7300 are firmly connected with each other and conveniently butt-jointed at the same time through the structural design of the short top irons 7300, the hydraulic device 7400 is retracted and simultaneously pulls the short top irons 7300 to automatically mutually plug the short top irons 7300 through the cooperation of the blanking device 8000, the efficiency is improved, meanwhile, the short top irons are prevented from being pushed to fly accidentally to hurt people, and the probability of on-site operation accidents is reduced.
Further, the pipe shed 600 is inserted into the roadbed and is positioned below the road surface; the pipe shed 600 comprises a first pipe shed steel pipe 610 and a second pipe shed steel pipe 620, wherein a plurality of the first pipe shed steel pipes 610 are horizontally and uniformly distributed, the distribution direction is the same as the direction of the road surface lane, and the first pipe shed steel pipes 610 are vertical to the direction of the road surface lane; two rows of second pipe-shed steel pipes 620 are vertically and uniformly distributed, and the second pipe-shed steel pipes 620 at the top end of each row are respectively positioned below the first pipe-shed steel pipes 610 at the left end and the right end to form a shed-shaped structure; the first pipe-shed steel pipe 610 and the second pipe-shed steel pipe 620 are parallel to each other; the two ends of the pipe shed 600 are respectively abutted against the door frames 500, and the door frames 500 are positioned on the outer sides of the road surfaces.
The invention supports the interior of the roadbed through the structure of the pipe shed 600, thereby ensuring that the road surface can not collapse in the processes of soil taking below the pipe shed and box culvert jacking, improving the construction safety and avoiding the interruption of traffic on the road surface in the construction process; the pipe shed 600 is abutted through the structure of the door frame 530, so that the situation that the pipe shed 600 moves sideways in the process of soil taking and box culvert jacking is prevented;
Further, the door frame 500 includes two upright posts 510, the upright posts 510 are inserted into the roadbed, a pile cap 520 is fixed at the top end of the upright posts 510, a door frame column 530 is fixed at the top end of the pile cap 520, and the second pipe-shed steel pipe 620 is abutted against the door frame column 530; the top ends of two door frame columns 530 positioned on the same side of the road surface are jointly fixed with a door frame beam 540, and the first pipe shed steel pipe 610 is abutted against the door frame beam 540;
the upright post piles 510 of the doorframe 500 are inserted into the roadbed, and then the tube shed 600 is supported in an abutting manner through the doorframe columns 530 and the doorframe beams 540, so that the stability of the doorframe 500 is improved, the construction operation below the tube shed 600 is not hindered, and the construction efficiency is improved.
One side, far away from the pipe shed 600, of the door frame 500 is provided with an anti-moving structure 700, the anti-moving structure 700 comprises anti-moving piles 710, a plurality of anti-moving piles 710 are inserted on a roadbed, and the anti-moving piles 710 are uniformly distributed along the pavement lane direction; the top ends of the plurality of anti-moving piles 710 are fixed with anti-moving beams 720 together, one side of each anti-moving beam 720 close to the pipe shed 600 is fixed with a plurality of anti-moving support columns 730, and the plurality of anti-moving support columns 730 are horizontally and uniformly distributed and fixedly connected with the adjacent door frame beams 540.
Meanwhile, the door frame 530 is fixedly connected through the anti-moving support column 730 by supporting the anti-moving structure 700 at the construction tail end, so that the side moving condition in the construction process is further prevented.
Furthermore, the protective structures 400 are arranged around the pipe shed 600, and the protective structures 400 are positioned outside the pavement; the protection structure 400 includes a first road base protection pile 410, and a plurality of first road base protection piles 410 are inserted into the roadbed and uniformly distributed along the road surface lane direction; the inner side of the first road base protection pile 410 close to the door frame 500 is also provided with a second road base protection pile 420, and the top parts of the first road base protection pile 410 and the second road base protection pile 420 of each protection structure 400 are jointly fixed with a protection beam 430.
According to the invention, the protection structure 400 is arranged around the pipe shed 600, the roadbed around the pipe shed 600 can be effectively blocked and protected through the first roadbed protection piles 410, the roadbed is prevented from collapsing, meanwhile, the roadbed close to the pipe shed 600 can be further reinforced through the second roadbed protection piles 420, and the roadbed is comprehensively protected and prevented from collapsing.
Further, the hydraulic device comprises a front box culvert and a rear box culvert, wherein the rear box culvert is fixedly connected with the hydraulic device 7400, and a relay is reserved between the front box culvert and the rear box culvert; the first butt strap 1000 is arranged on a top plate, a side plate and a bottom plate at one end of the front box culvert, which is close to the relay, the second butt strap 2000 is arranged on a bottom plate at one end of the rear box culvert, which is close to the relay, and the third butt strap 3000 is arranged on the top plate and the side plate at one end of the rear box culvert, which is close to the relay; the second butt strap 2000 and the third butt strap 3000 are both slidingly connected with the corresponding adjacent first butt strap 1000;
The jack groove is formed in a bottom plate at one end of the front box culvert, which is close to the relay, a plurality of supporting frames 4000 are uniformly arranged on the jack groove, and a jack 5000 is fixedly arranged on each supporting frame 4000.
According to the invention, the first butt strap 1000 on the front box culvert is in sliding connection with the second butt strap 2000 and the third butt strap 3000 corresponding to the rear box culvert, so that the friction of the bottom plate between the relays is the friction between the steel plates in the pushing construction process of the box culvert, the resistance of construction jacking is reduced to the greatest extent, and when the jack 5000 is placed between the relays to perform pushing operation, the efficiency of relative displacement of the front box culvert and the rear box culvert is improved, and the box culvert is jacked into a designated position efficiently.
Further, a plurality of anchor bars are uniformly welded on the inner wall of one side of the first butt strap 1000 close to the front box culvert; one side of the first butt strap 1000, which is close to the front box culvert, and the anchor bars on the first butt strap 1000 are pre-buried together and fixed on the outer wall of the front box culvert, and the outer wall of the first butt strap 1000 is flush with the outer wall of the corresponding front box culvert.
Further, the second access panel 2000 includes a second end steel plate 2100 and a second side steel plate 2200, one end of the second end steel plate 2100 being vertically fixed-welded to one end of the second side steel plate 2200; the second end steel plate 2100 is pre-buried and fixed at the end part of the bottom plate of the rear box culvert; a plurality of anchor bars are uniformly welded on the inner wall of the second side steel plate 2200; a first reserved groove is formed in the bottom plate bottom side of the rear box culvert, and the second side steel plate 2200 and the anchoring steel bars on the second side steel plate 2200 are pre-buried and fixed on the first reserved groove together;
The first butt strap 1000 located at the bottom plate of the front box culvert extends into the first reserved groove to be slidably connected with the second side steel plate 2200, and the outer wall of the corresponding first butt strap 1000 is flush with the bottom plate bottom side of the rear box culvert.
It is worth to say that the mode of pre-buried is the concrete pre-buried, and steel sheet and frame main part concrete anchor are firm.
Further, the third butt strap 3000 is pre-buried and fixed at the top plate end and the side plate end of the rear box culvert; the outer walls of the top plate and the side plates of the rear box culvert are respectively provided with a second reserved groove; the first butt strap 1000 located at the top plate and the side plate of the front box culvert is slidably connected with the corresponding second reserved groove, and the outer wall of the top plate and the outer wall of the side plate of the rear box culvert are flush with the outer wall of the corresponding first butt strap 1000.
Further, one end of the third strap 3000 is slidably connected to the inner wall of the corresponding adjacent first strap 1000.
The invention can ensure the sliding effect of the top plate and the side plate and save the consumption of the steel plate through the simple design of the third butt strap 3000 and the cooperation of the second reserved groove formed on the outer wall of the top plate and the outer wall of the side plate of the rear box culvert.
Further, the support frame 4000 includes an L-shaped steel plate 4100, the L-shaped steel plate 4100 is pre-buried and fixed on the jack groove, receiving bars 4200 are symmetrically fixed on the L-shaped steel plate 4100, and the jack 5000 is fixedly installed on the L-shaped steel plate 4100.
According to the invention, the second end steel plate 2100 is embedded in the rear box culvert, so that the jack 5000 is better stressed, and the first butt strap 1000 and the second butt strap 2000 are firmer through the embedded and vertical arrangement of the anchoring steel bars, and meanwhile, the ends of the front box culvert and the rear box culvert can be firmly acted, so that the stress stability is improved.
Further, a beam type steel cutting edge is fixed at one end of the front box culvert far away from the rear box culvert, the beam type steel cutting edge comprises a top plate steel quilting frame 200 and a plurality of pier column steel quilting frames 100, a top plate 261 is welded at the top of the top plate steel quilting frame 200, a plurality of first saw tooth blocks 260 are fixedly connected at the front end of the top plate 261, and the rear end of the top plate 261 extends out of the top plate steel quilting frame 200; a bottom plate 262 is welded on the front side of the bottom of the top plate steel quilting frame 200, a plurality of pier column steel quilting frames 100 are welded on the bottom of the bottom plate 262, and a plurality of pier column steel quilting frames 100 are uniformly arranged at intervals; the front end of the bottom panel 262 is positioned outside the pier column steel quilting frame 100, and the bottom of the pier column steel quilting frame 100 is welded with a pier column bottom panel 280;
A first side panel 250 is welded on both sides of the top plate steel quilting frame 200, and a plurality of second saw-tooth blocks 251 are fixedly connected to the front end of the first side panel 250; the two sides of the pier column steel quilting frame 100 are welded with the second side panel 300, and the front end of the second side panel 300 is fixedly connected with a plurality of third saw tooth blocks 310.
According to the invention, through working under the support of the pier column steel quilting frame 100 and the top plate steel quilting frame 200, through cutting in by the first saw tooth block 260 and then excavating, overexcavation and soil collapse are not caused, the loss of upper soil is reduced, and the sedimentation risk of the expressway pavement is reduced; soil bodies on two sides can be cut through the second sawtooth blocks 251 and the third sawtooth blocks 310, the supporting function is achieved, loss of the soil bodies on two sides is prevented, and the probability of collapse and settlement of the ultra-shallow buried large section is comprehensively reduced.
Further, the top steel quilting frame 200 includes a plurality of top longitudinal bars 211 arranged side by side and uniformly, and a bottom longitudinal bar 210 is arranged below each top longitudinal bar 211; the adjacent two top plate longitudinal bars 211 are fixedly welded through a plurality of top plate transverse bars 240, and the adjacent two bottom plate longitudinal bars 210 are fixedly welded through a plurality of bottom plate transverse bars 241; the adjacent top plate longitudinal bars 211 and bottom plate longitudinal bars 210 are fixedly welded through a plurality of first tie bars 230; the rear ends of the plurality of bottom plate longitudinal bars 210 are fixedly welded with a cross member 270, and the rear end of each top plate longitudinal bar 211 is fixedly welded with the cross member 270 through a second tie bar 231.
Still further, the pier column steel quilting frame 100 comprises two symmetrically arranged side plate frames 110, wherein each side plate frame 110 comprises a first side plate vertical rib 111, a second side plate vertical rib 112 and a third side plate vertical rib 113 which are all obliquely arranged, and the included angles between the first side plate vertical rib 111, the second side plate vertical rib 112 and the third side plate vertical rib 113 and the ground are continuously reduced, and the included angle is 64-73 degrees; a plurality of side plate transverse ribs 120 are welded among the first side plate vertical ribs 111, the second side plate vertical ribs 112 and the third side plate vertical ribs 113; a plurality of third tie bars 130 are welded between the two side plate frames 110 corresponding to the adjacent side plate transverse ribs 120, and pier stud compartment plates 140 are welded on the third tie bars 130 between the two side plate frames 110 corresponding to the adjacent side plate transverse ribs 120.
It should be noted that, the base materials used for the top plate steel quilting frame 200 and the pier column steel quilting frame 100 of the present invention may be i-steel, so as to improve structural stability.
According to the invention, through the structural design of the pier column steel quilting frame 100 and the pier column compartment plates 140, each layer of the pier column compartment is sealed into an independent box chamber, once collapse phenomenon is found, the independent box chamber can be independently sealed, so that the stability is increased, and large-area collapse is prevented.
Still further, the ends of the first side plate vertical rib 111 and the second side plate vertical rib 112, which are far away from the pier bottom plate 280, are fixedly welded to the bottom plate 262, and the ends of the third side plate vertical rib 113, which are far away from the pier bottom plate 280, are fixedly welded to the cross beam 270.
According to the invention, through the structural design of the top panel 261, the rear end extension side of the top panel 261 can be hung on a box culvert, the connection stability of the device and the box culvert is improved, meanwhile, through the integrated design of the cross beam 270, the support stability of the top panel steel quilting frame 200 is integrally improved, and through the angle design of the first side plate vertical rib 111, the second side plate vertical rib 112 and the third side plate vertical rib 113, the safety and stability of the device are ensured, and the jacking operation efficiency of the device is facilitated.
Further, the rear end of the first serration block 260 is fixedly connected to the top panel 261 by a bolt, and the first serration block 260 is formed by a plurality of continuous long serration blocks and a plurality of continuous short serration blocks which are circularly and alternately distributed.
Further, the rear end of the second serration piece 251 is fixedly coupled to the first side panel 250 by a bolt.
Further, the rear end of the third sawtooth block 310 is fixedly connected with the second side panel 300 through a bolt, and the third sawtooth block 310 is formed by circularly and alternately distributing a plurality of continuous long sawtooth blocks and a plurality of continuous short sawtooth blocks.
According to the invention, through the structural design that the first saw tooth block 260 and the third saw tooth block 310 are circularly and alternately distributed for the plurality of continuous long saw tooth blocks and the plurality of continuous short saw tooth blocks, the saw tooth blocks are easier to cut into soil for soil cutting operation, and meanwhile, the saw tooth blocks are easier to fix and replace in a bolt connection mode of the saw tooth blocks, so that the maintenance efficiency is improved.
Still further, the distance between the adjacent pier stud steel quilts 100 is 3.5 to 5 meters. The invention can flexibly increase and decrease 100 numbers of pier column steel quilting frames, and is suitable for construction of various spans jacking ground roads and bridges.
A pushing method utilizing the ultra-shallow buried large-section underground passage pushing system comprises the following steps:
S1, excavating a working pit on one side of a pavement, installing back piles 6100 and back walls 6300 in a roadbed at one end of the working pit far away from the pavement, installing roadbed protection piles and upright post piles 510 of a door frame 500 in the roadbed around the pavement where a pipe shed 600 is constructed, installing pile caps 520 on the upright post piles 510 of the door frame 500, and installing protection beams 430 on the roadbed protection piles; installing an anti-moving pile 710 in the roadbed at one side of the pavement far from the working pit, and filling grout and rubble at one side of the anti-moving pile 710 far from the pavement;
S2, constructing a pipe shed 600, fixing a drilling machine on a working pit foundation through a ground anchor seat and a rear support, adjusting a drill rod, drilling the drill rod into the center of a pipe position designed at the construction position of the pipe shed 600, drilling along a horizontal straight line, simultaneously pouring slurry into the drill rod, and spraying the slurry from a drill bit to form a small cavity; after a drill rod drills out from a designed pipe position, connecting one end of a drill bit with a pipeline through a transfer case, adjusting the drill bit to enlarge the diameter expansion range of the drill bit, pulling back the pipeline in a traction mode, drilling the drill rod in the opposite direction in the pulling back process, simultaneously pouring slurry, and reaming a small cavity to form a large cavity; after the pipeline is pulled back to a preset position, the transfer case is disassembled, one end of the pipeline is blocked, and concrete is poured on the other end of the pipeline, so that the construction of the pipe shed 600 is realized; after the pipe shed 600 is in place, installing a door frame column 530 on the pile cap 520 of the upright post 510, jointly installing door frame beams 540 on the door frame column 530 on the same side, abutting the pipe shed 600 through the door frame column 530 and the door frame beams 540, then installing an anti-moving beam 720 on the anti-moving pile 710, and fixedly installing an anti-moving support column 730 between the anti-moving beam 720 and the adjacent door frame beam 540;
S3, prefabricating a box culvert on a working pit, installing a plurality of long top irons 7100 on one side of a back wall 6300, fixing the plurality of long top irons 7100 with a long cross beam 7200, abutting a plurality of short top irons 7300 on one side of the long cross beam 7200, installing a blanking device 8000 above the short top irons 7300, connecting a hydraulic device 7400 at one end of the box culvert with the short top irons 7300, pushing forward the front box culvert through a jack 5000 between relays, sequentially pushing forward according to the sequence of the box culverts, pushing forward the final box culvert through the hydraulic device 7400, retracting the output end of a hydraulic cylinder 7420, pulling forward the short top irons 7300 through a U-shaped groove 7430, and moving the short top irons 7300 of the blanking device 8000 downwards by gravity after pulling and plugging with the short top irons 7300 in front;
s4, when the front box culvert is pushed forward, the front box culvert is inserted into a soil layer below the pipe shed 600 through the beam type steel blade feet, then the front box culvert is excavated and carried out in the beam type steel blade feet, and the pushing operation is carried out after the front box culvert is excavated, so that the front box culvert is continuously circulated.
Further, the slurry comprises the following components in percentage by mass: expansive soil: 35% -45%, caustic soda: 0.5 to 0.8 percent of water: 65% -55% of the slurry is uniformly mixed before pouring.
According to the invention, the roadbed protection piles and the upright post piles 510 of the doorframe 530 are respectively arranged in the roadbed around the road surface at the pipe shed construction position, so that the two sides of the roadbed are reinforced, the roadbed is prevented from moving sideways in the construction process of the pipe shed 600 and the jacking process of the subsequent box culvert, and the stress surface of the roadbed is supported by the structural design of the anti-moving piles 710 and the filled grout rubble, so that the roadbed is further prevented from moving sideways.
The pushing system can safely and circularly push the box culvert continuously under the condition of not interrupting road traffic, so that the box culvert can enter a preset position in cooperation with excavation; when the drill bit is used for drilling, drill cuttings are more easily discharged out of the hole by using the slurry and the drill bit, so that an annular space is formed, the wall protection effect is achieved by expanding the soil components, and then the viscosity of the slurry is enhanced by combining with caustic soda, so that the forming and wall protection effects of the annular space are further improved.
Compared with the conventional direct drilling, the invention has the advantages that the drill rod is drilled into the small cavity through the dragging process, the probability of encountering hard soil blocks in the drilling process is reduced, so that an annular space is easier to form, then the drill rod is drilled back in a dragging mode to form the large cavity, the large cavity is easier to form, and then the pipeline is dragged to a designated position, so that the construction efficiency of the pipe shed is improved.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and changes can be made by those skilled in the art without departing from the inventive concept and remain within the scope of the invention.
Claims (5)
1. The ultra-shallow buried large-section underground passage pushing system is characterized by comprising a back pile (6100), wherein a plurality of back piles (6100) are buried underground at one end of a roadside working pit, a crown beam (6200) is jointly fixed at the top of each back pile (6100), a back wall (6300) is fixed at one side of each back pile (6100), a top iron structure is fixedly abutted to one side of each back wall (6300), the top iron structure is abutted to a hydraulic device (7400), a blanking device (8000) capable of placing top iron is arranged above the top iron structure, and the hydraulic device (7400) is fixed at the bottom of a box culvert;
The top iron structure comprises long top irons (7100), one ends of a plurality of the long top irons (7100) are abutted against the back wall (6300), and long cross beams (7200) are fixed at the other ends of the long top irons; the top iron structure further comprises short top irons (7300), wherein the two ends of the short top irons (7300) are provided with notches with opposite directions, the notches at the two ends of the short top irons (7300) are mutually spliced to form a plurality of groups, and the two ends of each group of short top irons (7300) are abutted against long cross beams (7200); the hydraulic device (7400) comprises a hydraulic cylinder (7420), the hydraulic cylinder (7420) is fixedly arranged on a bracket (7410), and the bracket (7410) is fixedly connected with a box culvert; the output end of the hydraulic cylinder (7420) is provided with a U-shaped groove (7430) through a bolt, and the U-shaped groove (7430) is mutually spliced with the notch of the adjacent short top iron (7300);
The blanking device (8000) comprises a feed box (8100) with upper and lower openings, the feed box (8100) is positioned on one side close to the hydraulic device (7400) and right above a short top iron (7300), Z-shaped supporting feet (8200) are fixedly connected to the periphery of the bottom of the feed box (8100), and the bottom of the Z-shaped supporting feet (8200) is fixedly connected with the ground through bolts; a plurality of short top irons (7300) can be piled in the feed box (8100), and an outward-opening feed inlet (8300) is fixedly arranged at the top of the feed box (8100);
The pipe shed (600) is inserted into the roadbed and is positioned below the road surface; the pipe shed (600) comprises first pipe shed steel pipes (610) and second pipe shed steel pipes (620), wherein a plurality of the first pipe shed steel pipes (610) are horizontally and uniformly distributed, the distribution direction is the same as the pavement lane direction, and the first pipe shed steel pipes (610) are perpendicular to the pavement lane direction; two rows of second pipe-shed steel pipes (620) are vertically and uniformly distributed, and the second pipe-shed steel pipes (620) at the top end of each row are respectively positioned below the first pipe-shed steel pipes (610) at the left end and the right end to form a shed-shaped structure; the first pipe shed steel pipe (610) and the second pipe shed steel pipe (620) are parallel to each other; two ends of the pipe shed (600) are respectively abutted against a door frame (500), and the door frames (500) are positioned on the outer side of a road surface;
The door frame (500) comprises two upright posts (510), the upright posts (510) are inserted into the roadbed, pile caps (520) are fixed at the top ends of the upright posts (510), door frame columns (530) are fixed at the top ends of the pile caps (520), and the second pipe-shed steel pipes (620) are abutted to the door frame columns (530); the top ends of two door frame columns (530) positioned on the same side of the road surface are fixedly provided with door frame beams (540) together, and the first pipe shed steel pipe (610) is abutted to the door frame beams (540); one side, far away from the pipe shed (600), of the door frame (500) is provided with an anti-moving structure (700), the anti-moving structure (700) comprises anti-moving piles (710), a plurality of anti-moving piles (710) are inserted on a roadbed, and the anti-moving piles (710) are uniformly distributed along the direction of a pavement lane; the top ends of the anti-moving piles (710) are fixedly provided with anti-moving beams (720) together, one side of each anti-moving beam (720) close to the pipe shed (600) is fixedly provided with a plurality of anti-moving support columns (730), and the plurality of anti-moving support columns (730) are horizontally and uniformly distributed and fixedly connected with adjacent door frame beams (540);
The periphery of the pipe shed (600) is provided with a protection structure (400), and the protection structure (400) is positioned at the outer side of the pavement; the protection structure (400) comprises a first road base protection pile (410), and a plurality of first road base protection piles (410) are inserted into the roadbed and are uniformly distributed along the road surface lane direction; the inner side of the first road base protection pile (410) close to the door frame (500) is also provided with a second road base protection pile (420), and protection beams (430) are jointly fixed at the tops of the first road base protection pile (410) and the second road base protection pile (420) of each protection structure (400).
2. The ultra-shallow buried large-section underground passage pushing system according to claim 1, comprising a front box culvert and a rear box culvert, wherein the rear box culvert is fixedly connected with a hydraulic device (7400), and a relay is reserved between the front box culvert and the rear box culvert; a first butt strap (1000) is arranged on a top plate, a side plate and a bottom plate at one end of the front box culvert, which is close to the relay, a second butt strap (2000) is arranged on a bottom plate at one end of the rear box culvert, which is close to the relay, and a third butt strap (3000) is arranged on the top plate and the side plate at one end of the rear box culvert, which is close to the relay; the second butt strap (2000) and the third butt strap (3000) are both in sliding connection with the corresponding adjacent first butt strap (1000);
The lifting jack groove is formed in a bottom plate at one end of the front box culvert, which is close to the relay, a plurality of supporting frames (4000) are uniformly arranged on the lifting jack groove, and lifting jacks (5000) are fixedly arranged on the supporting frames (4000).
3. The ultra-shallow buried large-section underground passage pushing system according to claim 2, wherein a beam type steel cutting edge is fixed at one end of the front box culvert far away from the rear box culvert, the beam type steel cutting edge comprises a top plate steel quilting frame (200) and a plurality of pier column steel quilting frames (100), a top plate (261) is welded at the top of the top plate steel quilting frame (200), a plurality of first saw tooth blocks (260) are fixedly connected to the front end of the top plate (261), and the rear end of the top plate (261) extends out of the top plate steel quilting frame (200); a bottom plate (262) is welded on the front side of the bottom of the top plate steel quilting frame (200), a plurality of pier column steel quilting frames (100) are welded on the bottom of the bottom plate (262), and a plurality of pier column steel quilting frames (100) are uniformly arranged at intervals; the front end of the bottom panel (262) is positioned outside the pier column steel quilting frame (100), and a pier column bottom panel (280) is welded at the bottom of the pier column steel quilting frame (100);
A first side panel (250) is welded on two sides of the top plate steel quilting frame (200), and a plurality of second saw-tooth blocks (251) are fixedly connected to the front end of the first side panel (250); the two sides of the pier column steel quilting frame (100) are welded with a second side panel (300), and the front end of the second side panel (300) is fixedly connected with a plurality of third saw tooth blocks (310).
4. A pushing method using the ultra-shallow buried large section underground passage pushing system according to any one of claims 1 to 3, comprising the steps of:
S1, excavating a working pit on one side of a pavement, installing back piles (6100) and back walls (6300) in a roadbed at one end of the working pit far away from the pavement, installing roadbed protection piles and upright post piles (510) of a door frame (500) in the roadbed around the pavement where a pipe shed (600) is constructed, installing pile caps (520) on the upright post piles (510) of the door frame (500), and installing protection beams (430) on the roadbed protection piles; installing an anti-moving pile (710) in the roadbed at one side of the pavement far from the working pit, and filling grout rubble at one side of the anti-moving pile (710) far from the pavement;
S2, constructing a pipe shed (600), fixing a drilling machine on a foundation of a working pit through a ground anchor seat and a rear support, adjusting a drill rod, drilling the drill rod into a designed pipe position center of a construction position of the pipe shed (600), drilling along a horizontal straight line, simultaneously pouring slurry into the drill rod, and spraying the slurry from a drill bit to form a small cavity; after a drill rod drills out from a designed pipe position, connecting one end of a drill bit with a pipeline through a transfer case, adjusting the drill bit to enlarge the diameter expansion range of the drill bit, pulling back the pipeline in a traction mode, drilling the drill rod in the opposite direction in the pulling back process, simultaneously pouring slurry, and reaming a small cavity to form a large cavity; after the pipeline is pulled back to a preset position, the transfer case is disassembled, one end of the pipeline is blocked, and concrete is poured on the other end of the pipeline, so that the construction of a pipe shed (600) is realized; after the pipe shed (600) is in place, installing a door frame column (530) on a pile cap (520) of the upright post pile (510), jointly installing door frame beams (540) on the door frame column (530) on the same side, abutting the pipe shed (600) through the door frame column (530) and the door frame beams (540), then installing an anti-moving beam (720) on the anti-moving pile (710), and fixedly installing an anti-moving support column (730) between the anti-moving beam (720) and the adjacent door frame beams (540);
S3, prefabricating a box culvert on a working pit, installing a plurality of long top irons (7100) on one side of a back wall (6300), fixing the plurality of long top irons (7100) with a long cross beam (7200), abutting the plurality of short top irons (7300) on one side of the long cross beam (7200), installing a blanking device (8000) above the short top irons (7300), connecting a hydraulic device (7400) at one end of the box culvert with the short top irons (7300), operating through a jack (5000) between relays, jacking the front box culvert forwards in sequence according to the box culvert, jacking the last box culvert forwards through the hydraulic device (7400), retracting the output end of a hydraulic cylinder (7420), pulling the short top irons (7300) forwards through a U-shaped groove (7430), and moving the short top irons (7300) of the blanking device (8000) downwards by gravity after pulling and plugging the front short top irons (7300);
s4, when the front box culvert is pushed forward, the front box culvert is inserted into a soil layer under the pipe shed (600) through the beam type steel blade feet, then the front box culvert is excavated and carried out in the beam type steel blade feet, and the pushing operation is carried out after the excavation, so that the front box culvert is continuously circulated.
5. The pushing method by using the ultra-shallow buried large-section underground passage pushing system according to claim 4, wherein the slurry comprises the following components in percentage by mass: expansive soil: 35% -45%, caustic soda: 0.5% -0.8%, water: 65% -55%, and the slurry is uniformly mixed before pouring.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE766064A (en) * | 1970-12-28 | 1971-09-16 | Commercial Shearing | TELESCOPIC COATING AND SUPPORT STRUCTURE AND COATING PROCESS FOR TUNNELS AND WELLS |
| BE892800A (en) * | 1981-04-10 | 1982-08-02 | Gewerk Eisenhuette Westfalia | HYDRAULIC PRESSURE CYLINDER FOR PRESSURE PIPING OF TUBES AND THE LIKE |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4644167B2 (en) * | 2006-08-25 | 2011-03-02 | 株式会社ピーエス三菱 | Underpass construction method |
| CN101963061B (en) * | 2010-10-19 | 2011-08-03 | 浙江省建工集团有限责任公司 | Construction method for underground box culvert of existing railway line |
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- 2023-12-29 CN CN202311872646.4A patent/CN117662178B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE766064A (en) * | 1970-12-28 | 1971-09-16 | Commercial Shearing | TELESCOPIC COATING AND SUPPORT STRUCTURE AND COATING PROCESS FOR TUNNELS AND WELLS |
| BE892800A (en) * | 1981-04-10 | 1982-08-02 | Gewerk Eisenhuette Westfalia | HYDRAULIC PRESSURE CYLINDER FOR PRESSURE PIPING OF TUBES AND THE LIKE |
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| CN117662178A (en) | 2024-03-08 |
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