CN115976990A - Construction technology based on-site corrugated steel pipe culvert deformation treatment - Google Patents
Construction technology based on-site corrugated steel pipe culvert deformation treatment Download PDFInfo
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- CN115976990A CN115976990A CN202310043998.2A CN202310043998A CN115976990A CN 115976990 A CN115976990 A CN 115976990A CN 202310043998 A CN202310043998 A CN 202310043998A CN 115976990 A CN115976990 A CN 115976990A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 47
- 239000010959 steel Substances 0.000 title claims abstract description 47
- 238000010276 construction Methods 0.000 title claims abstract description 29
- 238000005516 engineering process Methods 0.000 title claims abstract description 16
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 8
- 230000008569 process Effects 0.000 claims abstract description 5
- 238000005259 measurement Methods 0.000 claims abstract description 4
- 230000005540 biological transmission Effects 0.000 claims description 5
- 244000309464 bull Species 0.000 claims description 4
- 238000005260 corrosion Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000006978 adaptation Effects 0.000 claims 1
- 230000008901 benefit Effects 0.000 description 8
- 238000009434 installation Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention discloses a construction technology for treating deformation of a culvert based on-site corrugated steel pipes, which relates to the technical field of construction of the culvert of the corrugated steel pipes, and comprises the following process flows of: s1, preparing before construction, measuring a grouting area, removing an inverted arch structure of a pavement, and placing a corrugated steel culvert body; s2, grouting small guide pipes, reinforcing the actual measurement of the reinforced area by using a supporting device, and removing the temporary reinforcing support. According to the invention, by removing the inverted arch structure of the pavement and assisting the grouting of the small guide pipe, the bearing capacity of the inverted arch foundation is improved, the inverted arch is prevented from continuously generating uneven settlement and deformation, the structural stability of the culvert body is improved by reinforcing the culvert body, so that the stress is ensured to be uniform, and the corrugated steel pipe culvert body with different sizes can be subjected to rapid anti-deformation treatment by adjusting the distance between the two touch panels through the arrangement of the handle block, the fixed inserted rod, the first tension spring, the adjusting knob, the control rotating rod, the driving bevel gear, the driven bevel gear and the adjusting screw, so that the practicability is good.
Description
Technical Field
The invention relates to the technical field of corrugated steel pipe culvert construction, in particular to a construction technology based on-site corrugated steel pipe culvert deformation treatment.
Background
The corrugated steel pipe culvert has the advantages of short construction period, light weight, good durability, low manufacturing cost and the like, and is increasingly applied to the newly-built culvert of the expressway and the reinforcement construction of the existing culvert; different from other structural styles, the corrugated steel pipe culvert is a flexible structure which is formed by splicing corrugated steel plates of pipe sections through high-strength bolts, and the corrugated steel pipe culvert has certain deformation adapting capacity due to the structural characteristics of the corrugated steel pipe culvert.
Because corrugated steel pipe culvert section is through high strength bolt connection, if the deformation of pipe coupling is too big, at first can influence the headroom in the culvert, the compression is crossed water or area of passage, and then the shear force that too big deformation produced can cut off the high strength bolt, or tears the steel sheet that excels in along the most unfavorable direction, leads to the collapse of structure, so need warp the punishment to it when site operation, consequently, for solving above-mentioned problem, this application has proposed one kind and has contained deformation punishment construction technology based on-the-spot corrugated steel pipe.
Disclosure of Invention
The utility model provides a deformation punishment construction technology based on-the-spot corrugated steel pipe culvert is provided to propose in solving above-mentioned background art if the tube coupling of corrugated steel pipe culvert warp too big, can cut off the high strength bolt, or tear the steel sheet that excels in along the most unfavorable direction, lead to the collapse of structure, so need deform the problem of punishment to it when site operation.
In order to achieve the above purpose, the present application provides the following technical solutions: a culvert deformation treatment construction technology based on-site corrugated steel pipes comprises the following process flows:
s1, preparing before construction, measuring a grouting area, removing an inverted arch structure of a pavement, and placing a corrugated steel culvert body;
s2, grouting small guide pipes, actually measuring actual measurement of a reinforced area, reinforcing and supporting by using a supporting device, and temporarily removing the reinforcing and supporting;
and S3, constructing a masonry body, performing anti-corrosion treatment, and checking and monitoring engineering.
Preferably, the supporting device comprises a supporting column arranged in the corrugated steel pipe culvert body, a first sliding groove and a second sliding groove are formed in the top end and the bottom end of the supporting column respectively, a first sliding column and a second sliding column are arranged in the first sliding groove and the second sliding groove respectively in a sliding mode, the end portions, far away from each other, of the first sliding column and the second sliding column are provided with a contact plate which is attached to the inner wall of the corrugated steel pipe culvert body, the side portion of the first sliding column is provided with a plurality of fixing holes uniformly, the supporting column is provided with a fixing assembly matched with the fixing holes, the inner wall of the top of the second sliding groove is rotatably provided with an adjusting screw, the second sliding column is sleeved with threads on the adjusting screw, the inner wall of the side portion of the second sliding groove is provided with an installation rotating hole, a control rotating rod is rotatably arranged in the installation rotating hole, one end of the control rotating rod is connected with the adjusting screw through a gear transmission unit, the other end of the control rotating rod is provided with an adjusting knob, and the supporting column is further provided with a locking unit for fixing the control rotating rod.
Preferably, the fixing assembly comprises a handle block arranged on the side of the support column, a fixing insertion rod matched with the fixing hole is mounted on the side of the handle block, a sliding hole is formed in the inner wall of the side of the first sliding groove, the end of the fixing insertion rod penetrates through the sliding hole and extends into one of the fixing holes, and a first elastic element is mounted on the handle block.
Preferably, the first elastic element comprises a first tension spring sleeved on the fixed inserted link, and two ends of the first tension spring are respectively installed on the supporting column and the side portion of the handle block.
Preferably, the gear transmission unit comprises a driving bevel gear installed at the end of the control rotating rod, and a driven bevel gear engaged with the driving bevel gear is sleeved on the adjusting screw rod.
Preferably, the locking unit is including cup jointing the installation locking gear on the control bull stick, fixed lug is installed to the lateral part of support column, the hexagonal slide opening has been seted up at fixed lug's top, slidable mounting has the hexagonal slide bar in the hexagonal slide opening, the bottom of hexagonal slide bar install with locking gear assorted arc fixture block, the unblock pull block is installed on the top of hexagonal slide bar, install second elastic element on the unblock pull block.
Preferably, the second elastic element comprises a second tension spring sleeved on the hexagonal sliding rod, and two ends of the second tension spring are respectively installed on the top of the fixed bump and the bottom of the unlocking pulling block.
Preferably, rubber protection pads are fixedly arranged on the side portions, far away from each other, of the two abutting plates.
In conclusion, the technical effects and advantages of the invention are as follows:
1. according to the invention, the foundation and the arch are reinforced by removing the inverted arch structure of the road surface and assisting the grouting method of the small guide pipe, so that the bearing capacity and the stability of the inverted arch foundation are improved, the inverted arch is prevented from continuously generating uneven settlement and deformation, the structural stability of the culvert body is improved by reinforcing the culvert body, the uniform stress is ensured, the construction speed is high, the construction period is shortened, meanwhile, the anticorrosion work is well done, and the service design life is ensured.
2. According to the corrugated steel pipe culvert, the first sliding column can be fixed or loosened through the arrangement of the handle block, the fixed inserting rod, the fixed hole and the first tension spring, so that the distance between the two abutting plates can be quickly and roughly adjusted by sliding the first sliding column, the second sliding column can be driven to slowly move up and down through the arrangement of the adjusting knob, the control rotating rod, the driving bevel gear, the driven bevel gear and the adjusting screw, further, the distance between the two abutting plates can be finely adjusted, so that the corrugated steel pipe culvert bodies with different sizes can be quickly subjected to deformation resistance treatment, the application range is widened, and the practicability is good.
3. When the unlocking pull block is pulled upwards, the arc-shaped fixture block is driven to be away from and loosen the locking gear and the control rotating rod through the hexagonal slide rod, at the moment, the adjusting knob can be rotated to perform anti-deformation treatment, when the unlocking pull block is loosened, the arc-shaped fixture block can be driven to automatically move downwards under the action of the elastic force of the second tension spring to fix the locking gear and the control rotating rod all the time, the condition that the distance between two touch plates changes due to the fact that the adjusting knob rotates is effectively reduced, and the stability is good when the unlocking pull block is used.
Drawings
In order to more clearly illustrate the embodiments of the present application 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 application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic view of a three-dimensional structure of a corrugated steel pipe culvert body and a supporting device in the present embodiment;
FIG. 2 is a schematic view of a partially cut structure of the supporting column in this embodiment;
FIG. 3 is an enlarged view of a portion of the fixing member of the present embodiment;
fig. 4 is a partially enlarged structural schematic view of a connection portion between the second strut and the adjusting knob in the present embodiment.
In the figure: 1. the corrugated steel pipe culvert body; 2. a support column; 3. a first traveler; 4. a second strut; 5. a touch plate; 6. a fixing hole; 7. adjusting the screw rod; 8. controlling the rotating rod; 9. adjusting a knob; 10. a handle block; 11. fixing the inserted rod; 12. a first tension spring; 13. a drive bevel gear; 14. a driven bevel gear; 15. a locking gear; 16. fixing the bump; 17. a hexagonal slide bar; 18. an arc-shaped fixture block; 19. unlocking the pull block; 20. a second tension spring; 21. a rubber protection pad.
Detailed description of the preferred embodiments
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Example (b): a culvert deformation treatment construction technology based on-site corrugated steel pipes comprises the following process flows:
s1, preparing work before construction, measuring a grouting area, removing an inverted arch structure of a pavement, and placing a corrugated steel pipe culvert body 1;
s2, grouting small guide pipes, actually measuring actual measurement of a reinforced area, reinforcing and supporting by using a supporting device, and temporarily removing the reinforcing and supporting;
and S3, constructing a masonry body, performing anti-corrosion treatment, and checking and monitoring engineering.
Based on the process flow, the foundation and the arch are reinforced by removing the inverted arch structure of the pavement and assisting the grouting method of the small guide pipe, so that the bearing capacity and the stability of the inverted arch foundation are improved, the inverted arch is prevented from continuously generating uneven settlement and deformation, the culvert body is reinforced by additionally arranging the supporting device, the structural stability of the culvert body is improved, the stress is ensured to be even, the construction speed is high, the construction period is shortened, meanwhile, the anticorrosion work is well done, and the service design life of the culvert is ensured.
Referring to fig. 1-4, the supporting device includes a supporting column 2 disposed in a corrugated steel pipe culvert body 1, a first chute and a second chute have been respectively disposed at the top and bottom of the supporting column 2, a first sliding column 3 and a second sliding column 4 are respectively slidably mounted in the first chute and the second chute, a collision plate 5 attached to the inner wall of the corrugated steel pipe culvert body 1 is respectively mounted at the end portions of the first sliding column 3 and the second sliding column 4 far away from each other, a plurality of fixing holes 6 are uniformly disposed at the side portion of the first sliding column 3, a fixing assembly adapted to the fixing holes 6 is mounted on the supporting column 2, an adjusting screw 7 is rotatably mounted on the inner wall of the top of the second chute, the second sliding column 4 is in threaded sleeve joint with the adjusting screw 7, an installation rotating hole is disposed on the inner wall of the side portion of the second chute, a control rotating rod 8 is rotatably mounted in the installation rotating hole, one end of the control rotating rod 8 is connected with the adjusting screw 7 through a gear transmission unit, an adjusting knob 9 is mounted at the other end of the control rotating rod 8, and a locking unit for fixing the control rotating rod 8 is further mounted on the supporting column 2.
Borrow by above-mentioned structure, through the setting of fixed subassembly and fixed orifices 6, can fix or loosen first traveller 3, and then the accessible slides first traveller 3 and comes to carry out quick coarse adjustment to two distances between the touch panel 5, when rotating adjust knob 9, can be through control bull stick 8, gear drive unit drives adjusting screw 7 synchronous rotation, adjusting screw 7 rotates and can drive the slow reciprocating of second traveller 4, and then can carry out fine adjustment to two distances between the touch panel 5, thereby realized can carrying out swift resistance to deformation punishment to not corrugated steel pipe culvert body 1 of equidimension, application scope has been improved, and the practicality is good.
As a preferred embodiment of this embodiment, the fixing assembly includes a handle block 10 disposed on a side portion of the supporting column 2, a fixing insertion rod 11 adapted to the fixing hole 6 is mounted on a side portion of the handle block 10, a sliding hole is opened on an inner wall of a side portion of the first sliding groove, an end portion of the fixing insertion rod 11 penetrates through the sliding hole and extends into one of the fixing holes 6, and a first elastic element is mounted on the handle block 10. The benefit that sets up like this is, when pulling handle piece 10, can drive fixed inserted bar 11 and shift out fixed orifices 6, unclamps first traveller 3, when promoting handle piece 10, can drive fixed inserted bar 11 and move into fixed orifices 6, fixes first traveller 3, and then has realized the purpose that can fix or unclamp first traveller 3.
In this embodiment, the first elastic element comprises a first extension spring 12 sleeved on the fixed inserted rod 11, and two ends of the first extension spring 12 are respectively installed on the side portions of the supporting column 2 and the handle block 10. The advantage of setting up like this is, when loosening handle piece 10, under the elasticity effect of first extension spring 12, can stimulate handle piece 10 automatic re-setting, and then can drive fixed inserted bar 11 and move into fixed orifices 6 automatically, fixes first traveller 3 all the time, and is stable firm.
As a preferred embodiment of the present embodiment, the gear transmission unit includes a driving bevel gear 13 mounted on the end of the control rotating rod 8, and a driven bevel gear 14 engaged with the driving bevel gear 13 is sleeved on the adjusting screw 7. The advantage of this arrangement is that when the control rotating rod 8 rotates, the driving bevel gear 13 is driven to rotate, and the driving bevel gear 13 rotates to drive the driven bevel gear 14 to rotate, so as to achieve the purpose of driving the adjusting screw 7 to rotate synchronously.
As a preferred embodiment of the present embodiment, the locking unit includes a locking gear 15 sleeved on the control rotating rod 8, a fixing protrusion 16 is installed at a side portion of the supporting column 2, a hexagonal sliding hole is formed at a top portion of the fixing protrusion 16, a hexagonal sliding rod 17 is slidably installed in the hexagonal sliding hole, an arc-shaped fixture block 18 matched with the locking gear 15 is installed at a bottom end of the hexagonal sliding rod 17, an unlocking pulling block 19 is installed at a top end of the hexagonal sliding rod 17, and a second elastic element is installed on the unlocking pulling block 19. The advantage of setting up like this, when removing unblock pull block 19, can drive arc fixture block 18 through hexagonal slide bar 17 and remove, change the position relation between arc fixture block 18 and locking gear 15 to can fix or loosen control bull stick 8, effectively reduce because of adjust knob 9 the rotation appears and lead to the condition that the distance between two contact plates 5 changes, stability is good.
In this embodiment, the second elastic element comprises a second extension spring 20 sleeved on the hexagonal sliding rod 17, and both ends of the second extension spring 20 are respectively installed on the top of the fixed protrusion 16 and the bottom of the unlocking pulling block 19. The advantage of this setting is that when loosening the unlocking pulling block 19, under the action of the second tension spring 20, the unlocking pulling block 19 will be pulled to automatically move downwards, and then the arc-shaped clamping block 18 will be driven to move downwards together to automatically fix the locking gear 15 and the control rotating rod 8, and the fixed state can be maintained all the time.
As a preferred embodiment of the present embodiment, rubber protection pads 21 are fixedly arranged on the side portions of the two abutting plates 5 away from each other. The advantage that sets up like this can be when the resistance to deformation punishment, play the buffering guard action, effectively reduce the impaired condition of corrugated steel culvert body 1 emergence of appearing.
The working principle of the invention is as follows:
through removing the road surface inverted arch structure and assisting the method of little pipe slip casting, consolidate basis and hunch waist to improve the bearing capacity and the stability on inverted arch basis, avoid the inverted arch to continue to produce inhomogeneous settlement and deformation, through consolidating the culvert body, improved the structural stability of culvert body, it is even to guarantee the atress, construction speed is fast, has saved the time limit for a project, does anticorrosive work simultaneously, guarantees its design life.
When the device is needed to be used for reinforcing a culvert body, firstly, the support column 2 to the abutting plate 5 are taken to be aligned with the deformation position of the corrugated steel pipe culvert body 1, when the handle block 10 is pulled, the fixed inserting rod 11 is driven to move out of the fixed hole 6, the first sliding column 3 is loosened, at the moment, the first sliding column 3 can be slid up and down to quickly and roughly adjust the distance between the two abutting plates 5, after the handle block 10 is adjusted to a proper distance, the handle block 10 is loosened, under the elastic action of the first tension spring 12, the handle block 10 can be pulled to automatically reset, the fixed inserting rod 11 can be driven to automatically move into the fixed hole 6, the first sliding column 3 is always fixed, then, the unlocking pulling block 19 is pulled upwards, the arc-shaped clamping block 18 can be driven through the hexagonal sliding rod 17 to be far away from and the locking gear 15 can be loosened, at the moment, the adjusting knob 9 can be rotated, the adjusting rod 8 can be driven, the driving bevel gear 13 and the adjusting screw 7 can be driven to synchronously rotate, the adjusting screw 7 can be driven to slowly move up and down, the fine adjustment of the distance between the two abutting plates 5 can be realized, the corrugated steel pipe culvert body can be quickly and the deformation resistance to improve the application range of the corrugated steel pipe culvert body 1, and the application range is improved.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (8)
1. The utility model provides a culvert deformation treatment construction technology based on-the-spot ripple steel pipe which characterized in that, this process flow includes:
s1, preparing before construction, measuring a grouting area, removing an inverted arch structure of a pavement, and placing a corrugated steel pipe culvert body (1);
s2, grouting small guide pipes, actually measuring actual measurement of a reinforced area, reinforcing and supporting by using a supporting device, and temporarily removing the reinforcing and supporting;
and S3, constructing a masonry body, performing anti-corrosion treatment, and checking and monitoring engineering.
2. The on-site corrugated steel pipe culvert deformation treatment construction technology based on the claim 1 is characterized in that: the supporting device comprises a supporting column (2) arranged in the corrugated steel pipe culvert body (1), a first sliding groove and a second sliding groove are respectively formed in the top end and the bottom end of the supporting column (2), the first sliding groove and the second sliding groove are respectively provided with a first sliding column (3) and a second sliding column (4) in the second sliding groove, the end portions, far away from each other, of the first sliding column (3) and the second sliding column (4) are respectively provided with a conflict plate (5) attached to the inner wall of the corrugated steel pipe culvert body (1), the side portion of the first sliding column (3) is uniformly provided with a plurality of fixing holes (6), the supporting column (2) is provided with a fixing component matched with the fixing holes (6), the inner wall of the top of the second sliding groove is rotatably provided with an adjusting screw rod (7), the second sliding column (4) is in threaded sleeve connection with the adjusting screw rod (7), the inner wall of the side portion of the second sliding groove is provided with an installing rotary hole, a control rotary rod (8) is rotatably installed in the installing rotary rod (8), one end of the control rotary rod (8) is connected with a control unit (9), and a control knob (9) is connected with the control rod (8).
3. The on-site corrugated steel pipe culvert deformation treatment construction technology based on the claim 2 is characterized in that: fixed subassembly is including setting up handle piece (10) on support column (2) lateral part, the lateral part of handle piece (10) install with fixed inserted bar (11) of fixed orifices (6) looks adaptation, the sliding hole has been seted up on the lateral part inner wall of first spout, the tip of fixed inserted bar (11) runs through the sliding hole and extends to one of them in fixed orifices (6), install first elastic element on handle piece (10).
4. The on-site corrugated steel pipe culvert deformation treatment construction technology based on the claim 3 is characterized in that: the first elastic element comprises a first tension spring (12) sleeved on the fixed inserted rod (11), and two ends of the first tension spring (12) are respectively installed on the supporting column (2) and the side portion of the handle block (10).
5. The on-site corrugated steel pipe culvert deformation treatment construction technology based on the claim 2 is characterized in that: the gear transmission unit comprises a driving bevel gear (13) arranged at the end part of the control rotating rod (8), and a driven bevel gear (14) meshed with the driving bevel gear (13) is sleeved on the adjusting screw rod (7).
6. The on-site corrugated steel pipe culvert deformation treatment construction technology based on the claim 2 is characterized in that: locking unit is including cup jointing to be installed locking gear (15) on control bull stick (8), fixed lug (16) are installed to the lateral part of support column (2), hexagonal slide opening has been seted up at the top of fixed lug (16), slidable mounting has hexagonal slide bar (17) in the hexagonal slide opening, the bottom of hexagonal slide bar (17) install with locking gear (15) assorted arc fixture block (18), unblock pull block (19) is installed on the top of hexagonal slide bar (17), install second elastic element on unblock pull block (19).
7. The on-site corrugated steel pipe culvert deformation treatment construction technology based on the claim 6 is characterized in that: the second elastic element comprises a second tension spring (20) sleeved on the hexagonal sliding rod (17), and two ends of the second tension spring (20) are respectively installed on the top of the fixed protruding block (16) and the bottom of the unlocking pulling block (19).
8. The on-site corrugated steel pipe culvert deformation treatment construction technology based on the claim 2 is characterized in that: two the lateral parts that keep away from each other of conflict board (5) all set firmly rubber protection pad (21).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310043998.2A CN115976990A (en) | 2023-01-29 | 2023-01-29 | Construction technology based on-site corrugated steel pipe culvert deformation treatment |
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| CN202310043998.2A CN115976990A (en) | 2023-01-29 | 2023-01-29 | Construction technology based on-site corrugated steel pipe culvert deformation treatment |
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| CN111851329A (en) * | 2020-08-21 | 2020-10-30 | 安徽省路桥工程集团有限责任公司 | High-fill corrugated steel pipe culvert construction system and construction method |
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| CN117988357A (en) * | 2024-04-07 | 2024-05-07 | 中国铁建大桥工程局集团有限公司 | Ultra-large diameter column pile foundation supporting structure and construction method |
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