CN210562178U - Shield constructs to pass through existing bridge pile pulling device - Google Patents
Shield constructs to pass through existing bridge pile pulling device Download PDFInfo
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- CN210562178U CN210562178U CN201921228519.XU CN201921228519U CN210562178U CN 210562178 U CN210562178 U CN 210562178U CN 201921228519 U CN201921228519 U CN 201921228519U CN 210562178 U CN210562178 U CN 210562178U
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Abstract
The utility model provides a shield constructs and passes through existing bridge pile pulling device belongs to bridge structures and reforms transform technical field. The method solves the technical problems of high construction difficulty in narrow space, large influence on surrounding environment and high construction cost in the prior art. The technical scheme is as follows: a device for pulling a pile through an existing bridge by a shield comprises a pile head pulling mechanism and a pile body pulling mechanism. The utility model has the advantages that: the utility model discloses a H shaped steel and cuboid steel block are pulled out on segmenting the pile body, have both guaranteed the reliability of pulling out the stake, accomplish high-efficient construction again in limited underground space, reduce the influence to superstructure or building on every side, simultaneously, adopt the steel to protect a section of thick bamboo to sink into the method of reducing friction with pile body and soil body separation, have stability height, advantage such as construction speed is fast.
Description
Technical Field
The utility model relates to a bridge structures reforms transform technical field, especially relates to a shield constructs and passes through existing bridge pile pulling device.
Background
With the increase of urban population and vehicles, urban subway traffic construction has become a preferred scheme for solving traffic congestion in each big city. Although the arrangement of the subway lines avoids the influence on the original building as much as possible in principle, part of the subway lines can pass through the existing bridge pile foundation. Therefore, in order to ensure the normal construction of urban subway lines, the existing bridge pile foundation needs to be pulled out, and the pile foundation below the bridge can be pulled out only in a very narrow limited space.
Through looking up relevant data, the pile pulling research to this finite space under the bridge floor is less, does not have the technical scheme of complete maturity at present, and traditional pile pulling mode is all pulled out on directly through apparatus such as dedicated pile extractor, hoist, and adhesion is big between pile surface and earth at pile pulling in-process, causes the stake to be difficult to be pulled out. The soft soil shield tunneling area passes through an existing bridge pile pulling device (201720235220.1), a full sleeve is driven by a full sleeve machine to rotate and sink into an original pile, and a blade arranged at the bottom of the full sleeve and an inverted triangular hammer arranged between the full sleeve and the original pile are used for cutting a pile body to complete pile pulling. The method can be effectively carried out in a wide field generally, however, when the underground construction space is very limited, a large machine is inconvenient to operate, the pile pulling difficulty is very high, the safety of an upper structure or surrounding buildings is easily influenced, and the problems of high risk, high cost and the like exist.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that the construction degree of difficulty is big in narrow and small space, influences big, construction cost is high to the surrounding environment that exists among the prior art to a shield constructs and passes through existing bridge pile pulling device is provided.
The utility model discloses a realize through following measure: a shield constructs and passes through the pile pulling device of the existing bridge, wherein, include the pile head pulls out the organization and pulls out the structural two parts of the body of the pile; the pile head pulling mechanism comprises a steel pile casing 1, H-shaped steel 2, a plurality of stiffening steel plates 4 and a steel backing plate 5, wherein the steel backing plate 5 is symmetrically welded at the contact part of the inner side of the lower flange of the H-shaped steel 2 and the top of a pile body 7 along a web plate, and an original pile main rib 10 sequentially penetrates through the bottom plate of the H-shaped steel 2 and the steel backing plate 5 from bottom to top;
the pile body pulling structure comprises a cuboid steel block 3, a jack 6, a steel cushion block 8 and a plurality of deformed steel bars 9, the deformed steel bars 9 are perpendicularly and crossly welded with a plurality of vertical original pile main bars 10 along the cross section direction of the cuboid steel block 3, the cuboid steel block 3 is arranged in a frame formed by the deformed steel bars 9 and the original pile main bars 10, and the jack 6 and the steel cushion block 8 are sequentially arranged below two sides of the cuboid steel block 3;
two sides of the steel casing 1 and the lower part of the H-shaped steel 2 are respectively provided with one jack 6 along the longitudinal direction of the H-shaped steel 2; the lower part of the jack 6 is provided with the steel cushion block 8, and the steel cushion block 8 is used as a pile pulling counter-force device through a bottom construction platform.
As a further optimization scheme of the device for pulling the pile out of the existing bridge through which the shield passes, a plurality of stiffening steel plates 4 in the device for pulling out the pile head are symmetrically arranged along the web of the H-shaped steel 2, two ends of the stiffening steel plates are respectively welded at the inner sides of the upper and lower flanges of the H-shaped steel 2, and one side close to the web is welded and fixed with the web; the height of the stiffening steel plate 4 is equal to the height of the web plate of the H-shaped steel 2, and the width of the stiffening steel plate 4 is half of the width of the flange of the H-shaped steel 2.
As the utility model provides a pair of shield constructs passes through further optimization scheme of existing bridge pile pulling device, among the pile head pulling device the steel backing plate 5 with former stake owner muscle 10 welding position is through setting up a plurality of horizontal direction the twisted steel 9 is strengthened fixedly.
As the utility model provides a pair of shield constructs passes through further optimization scheme of existing bridge pile pulling device, a steel protects a 1 and is the hollow cylinder structure, and its top is less than the top of pile body 7.
A pile pulling method of a pile pulling device for a shield to pass through an existing bridge comprises the following steps:
1) pouring of the construction platform is completed before pile pulling, and the construction requirements of the jack 6 and pile pulling equipment are met;
2) fixing equipment for pressing the steel casing 1 into the pile body 7, aligning and positioning the equipment with the center of the pile body 7, pressing the steel casing 1 into the periphery of the pre-pulled pile, and flushing soil body on the side of the pile body 7 in the steel casing 1 by using a high-pressure water gun;
3) the stiffening steel plates 4 are symmetrically arranged along the web plate of the H-shaped steel 2, two ends of the stiffening steel plates are respectively welded on the inner sides of the upper flange and the lower flange of the H-shaped steel 2, and one side close to the web plate is fixedly welded with the web plate;
4) the top of the pile body 7 is provided with the H-shaped steel 2, and the inner sides of the lower flanges of the H-shaped steel 2 at the part contacted with the top of the pile body 7 are symmetrically welded with the steel backing plates 5;
5) chiseling concrete at the top of the pile body 7, enabling the exposed main reinforcement of the original pile to penetrate through the lower flange of the H-shaped steel 2 and the steel backing plate 5 to be fixedly welded with the H-shaped steel 2, and reinforcing and fixing the welding part of the steel backing plate 5 and the main reinforcement 10 of the original pile by arranging a plurality of horizontal threaded steel bars 9;
6) a jack 6 is respectively arranged below the H-shaped steel 2 at the reinforcing position of the plurality of stiffening steel plates 4 along two sides of the pile body 7, a steel cushion block 8 is arranged at the lower end of the jack 6, a construction platform in contact with the bottom of the steel cushion block 8 is used as a pile pulling counterforce device, and thrust generated by graded load application of the jack 6 drives the H-shaped steel 2 to vertically move upwards, so that pile pulling is realized;
7) after the pile body 7 is pulled out for a certain distance, the H-shaped steel 2 is taken down and the pulled-out part of the pile body is cut off, and part of the main reinforcement is reserved and is welded and fixed with a plurality of threaded reinforcing steel bars 9 in the horizontal direction;
8) the cuboid steel block 3 is placed in a frame formed by the deformed steel bars 9 and the original pile main reinforcement 10, the bottom of the cuboid steel block 3 is in contact with the jack 6, and the jack 6 is utilized to continuously apply load, so that the pile is pulled up section by section;
9) and taking down the cuboid steel block 3, cutting off the extracted part of the pile body, reserving part of main reinforcements, welding and fixing the main reinforcements with a plurality of horizontal direction threaded steel bars 9, repeating the step 8) until the pile body is completely removed.
In order to better realize the aim of the utility model, the utility model also provides a device for pulling the pile through the existing bridge by the shield, which comprises a pile body pulling structure and two pile head clamping mechanisms which are oppositely arranged;
the pile body pulling structure comprises two steel cushion blocks 8, two jacks 6 respectively arranged on the two steel cushion blocks 8, a cuboid steel block 3 arranged at the tops of the two jacks 6, and a plurality of twisted steel bars 9 arranged on the top surface of the middle part of the cuboid steel block 3 at equal intervals;
the pile head clamping mechanism comprises a base 11 arranged on the top surface of the rectangular steel block 3, a movable guide part 12 arranged on the base 11, a main linkage part 13 and an auxiliary linkage part 14 which are respectively and movably connected to two support arms I120 of the movable guide part 12, and a plurality of elastic clamping components 16 which are respectively driven by jacking elements 15 at the driving ends of the main linkage part 13 and the auxiliary linkage part 14, wherein the plurality of elastic clamping components 16 are arranged on a support plate at one end of the base 11 side by side at equal intervals;
the device also comprises a guide screw rod which is arranged on the movable guide part 12 and penetrates through a supporting column on the base 11.
As the utility model provides a pair of shield constructs further optimization scheme that passes through existing bridge pile pulling device, remove 12 bottom surfaces of guide and set up two guide blocks 121 respectively side by side, guide block 121 cross section is trapezoidal form, and two guide block 121 respectively with cross section on the base 11 is the mutual sliding fit of handstand dovetail groove.
As a further optimization scheme of the shield tunneling device for crossing the existing bridge pile extractor, the main linkage 13 is concave, the transverse arm 131 thereof is hinged on one of the supporting arms 120 of the movable guide 12, and the two power arms are respectively hinged on the top pressing element 15.
As a further optimization scheme of the shield crossing the existing bridge pile extractor provided in the present invention, the auxiliary link 14 is hinged to the other end of the movable guide 12, the connecting arm 140 of the one supporting arm 120 is arranged on the driving arm 141 at one end of the connecting arm 140, and is movably connected to the top pressure element 15 at the driving arm 141 driving end, and the other end of the connecting arm 140 is movably connected to the transverse arm 131 of the main link 13.
As the utility model provides a pair of shield constructs passes through further optimization scheme of existing bridge pile pulling device, elasticity clamping assembly 16 include with the outside the extrusion stem 160 of twisted steel 9 mutual contact sets up return spring 161 on the extrusion stem 160.
In order to better realize the utility model discloses the purpose, the utility model also provides an use shield to construct the pile pulling method that passes through existing bridge pile pulling device, including following step:
1) pouring of the construction platform is completed before pile pulling, and the construction requirements of the jack 6 and pile pulling equipment are met;
2) fixing and pressing in steel pile casing equipment, aligning and positioning with the center of the pile body 7, pressing in the steel pile casing around the pre-pulled pile body, and flushing soil body on the side of the pile body 7 in the steel pile casing by using a high-pressure water gun;
3) chiseling concrete at the top of the pile body 7, and enabling exposed main reinforcements of the original pile to penetrate through gaps among a plurality of threaded reinforcing steel bars 9 on the top surface of the cuboid steel block 3 for reinforcing and fixing;
4) the guide screw is rotated to push the movable guide part 12 to move along the base 11, so that the jacking elements 15 at the driving ends of the main linkage part 13 and the auxiliary linkage part 14 are driven to extrude extrusion rods 160 of a plurality of elastic clamping assemblies 16 at the end parts and the external deformed steel bars 9, the jack 6 applies load in stages to generate vertical upward thrust to drive the original pile main bars 10 and the pile body 7 to move vertically and upwardly together, and pile pulling is realized;
5) after the pile body 7 is pulled out for a certain distance, the guide screw rod is rotated reversely, the pile head clamping mechanism is separated from the external threaded steel bar 9, the pulled part of the pile body is cut off, and the pile body is pulled up section by section through the jack 6;
6) and taking down the cuboid steel block 3, cutting off the extracted part of the pile body, retaining part of the main reinforcement and clamping and fixing the main reinforcement and a plurality of horizontal direction threaded steel bars 9, and repeating the steps 3) to 5) until the pile body is completely removed.
The utility model has the advantages that: the utility model discloses a H shaped steel and cuboid steel block pull out on segmenting original stake, have both guaranteed the reliability of pulling out the stake, accomplish high-efficient construction in limited underground space again, reduce the influence to superstructure or surrounding building, simultaneously, adopt the steel to protect a section of thick bamboo to sink into the method of separating the body of the pile and the soil body antifriction, have stability height, construction speed advantage such as fast; the whole pile pulling process adopts a mode of sectional cutting and repeated for many times, so that the problems of deeper pile length, larger pulling resistance of the whole pile and the like are effectively solved, and the construction stability is ensured; the steel casing is sunk, so that the separation of the pile body and the soil body is realized, the pile pulling difficulty is reduced by reducing friction force, the soil body outside the casing is prevented from entering the pile body, and the effects of accumulating water quantity and accelerating the overflow speed of water and soil from the upper side of the casing are achieved; the H-shaped steel with large self rigidity is welded with the original pile main rib to meet the dual requirements of strength and rigidity during pulling, the original pile with large initial pulling resistance can be effectively pulled, the reliability of pile pulling is ensured, the subsequent pile pulling is conveniently completed through the cuboid steel block with light weight and small volume, the manpower resource is saved, and the high efficiency of construction in a narrow space is ensured; the pile pulling equipment and the pile pulling method have strong field adaptability, high pile pulling efficiency and low space requirement on a construction site.
Drawings
FIG. 1 is a schematic structural view of an H-shaped steel pile pulling device of the present invention;
FIG. 2 is a schematic structural view of the rectangular steel block pile pulling device of the present invention;
FIG. 3 is a side view of the H-shaped steel pile pulling device of the present invention;
FIG. 4 is a schematic view of the connection between the rectangular steel block and the pile body;
fig. 5 is a schematic view of the overall structure of embodiment 2 of the present invention;
fig. 6 is a front view of embodiment 2 of the present invention;
FIG. 7 is a top view of FIG. 6;
fig. 8 is a schematic view of a pile head clamping mechanism according to embodiment 2 of the present invention;
fig. 9 is a schematic structural view of a main link in embodiment 2 of the present invention;
fig. 10 is a schematic structural view of an auxiliary link according to embodiment 2 of the present invention.
Wherein the reference numerals are: 1. a steel casing; 2. h-shaped steel; 3. a rectangular steel block; 4. a stiffened steel plate; 5. a steel backing plate; 6. a jack; 7. a primary pile body; 8. a steel cushion block; 9. twisted steel bars; 10. original pile main reinforcement; 11. a base; 12. a moving guide; 120. a first supporting arm; 121. a guide block; 13. a primary linkage; 130. a second supporting arm; 131. a transverse arm; 14. an auxiliary link; 140. a connecting arm; 141. a drive arm; 15. a pressing element; 16. an elastic clamping group; 160. an extrusion stem; 161. and a return spring.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.
Example 1
Referring to fig. 1 to 4, the present invention is: a shield constructs and passes through the pile pulling device of the existing bridge, wherein, include the pile head pulls out the organization and pulls out the structural two parts of the body of the pile; the pile head removing mechanism comprises a steel pile casing 1, H-shaped steel 2, a plurality of stiffening steel plates 4 and a steel backing plate 5, wherein the steel backing plate 5 is symmetrically welded along a web plate at the contact part of the inner side of the lower flange of the H-shaped steel 2 and the top of a pile body 7, and an original pile main rib 10 sequentially penetrates through the bottom plate of the H-shaped steel 2 and the steel backing plate 5 from bottom to top;
the pile body pulling device comprises a cuboid steel block 3, a jack 6, a steel cushion block 8 and a plurality of deformed steel bars 9, wherein the deformed steel bars 9 are perpendicularly and crossly welded with a plurality of vertical original pile main bars 10 along the cross section direction of the cuboid steel block 3, the cuboid steel block 3 is arranged in a frame formed by the deformed steel bars 9 and the original pile main bars 10, and the jack 6 and the steel cushion block 8 are sequentially arranged below two sides of the cuboid steel block 3;
two jacks 6 are respectively arranged on two sides of the steel casing 1 and below the H-shaped steel 2 along the longitudinal direction of the H-shaped steel 2; a steel cushion block 8 is arranged below the jack 6, and the steel cushion block 8 is used as a pile pulling counter-force device through a bottom construction platform.
Specifically, a plurality of stiffening steel plates 4 in the pile head removing mechanism are symmetrically arranged along the web plate of the H-shaped steel 2, two ends of the stiffening steel plates are respectively welded on the inner sides of the upper flange and the lower flange of the H-shaped steel 2, and one side close to the web plate is welded and fixed with the web plate; the height of the stiffening steel plate 4 is equal to the height of the web plate of the H-shaped steel 2, and the width of the stiffening steel plate 4 is half of the width of the flange of the H-shaped steel 2.
Specifically, the welding position of the steel base plate 5 and the original pile main reinforcement 10 in the pile head removing mechanism is reinforced and fixed by arranging a plurality of horizontal threaded steel bars 9.
Specifically, the steel casing 1 is of a hollow cylindrical structure, and the top of the steel casing is lower than the top of the pile body 7.
Example 2
Referring to fig. 5 to 10, in order to better achieve the object of the present invention, the present invention further provides a device for pulling a pile through an existing bridge, which comprises a pile body pulling structure and two pile head clamping mechanisms oppositely arranged;
the pile body pulling structure comprises two steel cushion blocks 8, two jacks 6 respectively arranged on the two steel cushion blocks 8, a cuboid steel block 3 with two ends respectively arranged at the tops of the two jacks 6, and a plurality of twisted steel bars 9 arranged on the top surface of the middle part of the cuboid steel block 3 at equal intervals;
the pile head clamping mechanism comprises a base 11 arranged on the top surface of the rectangular steel block 3, a movable guide part 12 arranged on the base 11, a main linkage part 13 and an auxiliary linkage part 14 which are respectively and movably connected to two support arms I120 of the movable guide part 12, a plurality of elastic clamping components 16 which are respectively driven by jacking elements 15 at the driving ends of the main linkage part 13 and the auxiliary linkage part 14, and a plurality of elastic clamping components 16 are arranged on a support plate at one end of the base 11 side by side at equal intervals;
the device also comprises a guide screw rod which is arranged on the movable guide part 12 and penetrates through a supporting column on the base 11.
Specifically, two guide blocks 121 are respectively arranged on the bottom surface of the movable guide 12 side by side, the cross section of each guide block 121 is trapezoidal, and the two guide blocks 121 are respectively in sliding fit with the inverted trapezoidal grooves on the base 11.
In particular, the main linkage member 13 is of a concave shape, the second transverse arm 130 thereof is hinged to one of the first support arms 120 of the mobile guide member 12, and the two power arms are hinged to the presser element 15, respectively.
Specifically, the secondary linkage 14 includes a connecting arm 140 hinged to the other supporting arm 120 of the moving guide 12, a driving arm 141 disposed at one end of the connecting arm 140, a pressing element 15 movably connected to a driving end of the driving arm 141, and the other end of the connecting arm 140 is movably connected to the transverse arm 122 of the primary linkage 13.
Specifically, the elastic clamping assembly 16 includes a pressing rod 160 in contact with the outside rebar 9, and a return spring 161 provided on the pressing rod 160.
The technical features that the utility model has not been described can be realized through or adopt prior art, and no longer give unnecessary details here, and of course, the above-mentioned explanation is not right the utility model discloses a restriction, the utility model discloses also not only be limited to the above-mentioned example, ordinary skilled person in this technical field is in the utility model discloses a change, modification, interpolation or replacement made in the essential scope also should belong to the utility model discloses a protection scope.
Claims (9)
1. A shield constructs and passes through the pile pulling device of existing bridge, characterized by that, include pile head pull out the organization and pile shaft pull out the structure two parts;
the pile head pulling mechanism comprises a steel pile casing (1), H-shaped steel (2), a plurality of stiffening steel plates (4) and a steel backing plate (5), wherein the steel backing plate (5) is symmetrically welded at the contact part of the inner side of the lower flange of the H-shaped steel (2) and the top of a pile body (7) along a web plate, and an original pile main rib (10) sequentially penetrates through a bottom plate of the H-shaped steel (2) and the steel backing plate (5) from bottom to top;
the pile body pulling device comprises a cuboid steel block (3), a jack (6), a steel cushion block (8) and a plurality of deformed steel bars (9), wherein the deformed steel bars (9) are mutually perpendicular and cross-welded with a plurality of vertical original pile main bars (10) along the cross section direction of the cuboid steel block (3), the cuboid steel block (3) is arranged in a frame formed by the deformed steel bars (9) and the original pile main bars (10), and the jack (6) and the steel cushion block (8) are sequentially arranged below two sides of the cuboid steel block (3);
the two sides of the steel protective cylinder (1) and the lower part of the H-shaped steel (2) are respectively provided with one jack (6) along the longitudinal direction of the H-shaped steel (2); the steel cushion block (8) is arranged below the jack (6), and the steel cushion block (8) is used as a pile pulling counterforce device through a bottom construction platform.
2. The device for pulling the pile out of the shield crossing the existing bridge according to claim 1, wherein a plurality of stiffening steel plates (4) in the device for pulling the pile head are symmetrically arranged along the web plate of the H-shaped steel (2), two ends of the stiffening steel plates are respectively welded on the inner sides of the upper flange and the lower flange of the H-shaped steel (2), and one side close to the web plate is welded and fixed with the web plate; the height of the stiffening steel plate (4) is equal to the height of the web plate of the H-shaped steel (2), and the width of the stiffening steel plate (4) is half of the width of the flange of the H-shaped steel (2).
3. The device for pulling the pile out of the existing bridge through the shield according to claim 1, wherein the welding position of the steel backing plate (5) and the original pile main rib (10) in the device for pulling out the pile head is reinforced and fixed by arranging a plurality of threaded steel bars (9) in the horizontal direction.
4. The device for pulling the pile through the existing bridge by the shield according to claim 1, wherein the steel casing (1) is of a hollow cylinder structure, and the top of the steel casing is lower than the top of the pile body (7).
5. The device for extracting the pile from the shield crossing the existing bridge according to claim 1, further comprising a pile body extracting structure and two oppositely arranged pile head clamping mechanisms;
the pile body pulling structure comprises two steel cushion blocks (8), two jacks (6) respectively arranged on the two steel cushion blocks (8), a cuboid steel block (3) with two ends respectively arranged at the tops of the two jacks (6), and a plurality of twisted steel bars (9) arranged on the top surface of the middle part of the cuboid steel block (3) at equal intervals;
the pile head clamping mechanism comprises a base (11) arranged on the top surface of the cuboid steel block (3), a movable guide piece (12) arranged on the base (11), a main linkage piece (13) and an auxiliary linkage piece (14) which are respectively and movably connected to two supporting arms I (120) of the movable guide piece (12), and a plurality of elastic clamping assemblies (16) which are respectively driven by jacking elements (15) at the driving ends of the main linkage piece (13) and the auxiliary linkage piece (14), wherein the elastic clamping assemblies (16) are arranged on a supporting plate at one end of the base (11) side by side at equal intervals;
the device also comprises a guide screw rod which is arranged on the movable guide piece (12) and penetrates through a supporting column on the base (11).
6. The device for pulling the pile through the existing bridge by the shield according to claim 5, wherein the bottom surface of the movable guide part (12) is respectively provided with two guide blocks (121) side by side, the cross section of each guide block (121) is in a trapezoid shape, and the two guide blocks (121) are respectively in sliding fit with the inverted trapezoid-shaped grooves in the cross section of the base (11).
7. A shield tunneling bridge-crossing pile extractor according to claim 5, characterized in that said main linkage (13) is concave, with a transversal arm (131) hinged to one of the first support arms (120) of said mobile guide (12), and with two power arms hinged to said presser element (15).
8. The device for pulling the pile through the existing bridge by the shield according to claim 5, wherein the secondary linkage (14) comprises a connecting arm (140) hinged to the other supporting arm I (120) of the movable guide (12), a driving arm (141) arranged at one end of the connecting arm (140), and a jacking element (15) movably connected to the driving end of the driving arm (141), and the other end of the connecting arm (140) is movably connected with the transverse arm (131) of the primary linkage (13).
9. A shield tunneling bridge-crossing existing bridge pile-pulling device according to claim 5, characterized in that the elastic clamping assembly (16) comprises an extrusion rod (160) in contact with the outside rebar (9), and a return spring (161) is arranged on the extrusion rod (160).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921228519.XU CN210562178U (en) | 2019-07-31 | 2019-07-31 | Shield constructs to pass through existing bridge pile pulling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921228519.XU CN210562178U (en) | 2019-07-31 | 2019-07-31 | Shield constructs to pass through existing bridge pile pulling device |
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| CN210562178U true CN210562178U (en) | 2020-05-19 |
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| CN201921228519.XU Active CN210562178U (en) | 2019-07-31 | 2019-07-31 | Shield constructs to pass through existing bridge pile pulling device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110409447A (en) * | 2019-07-31 | 2019-11-05 | 江苏省地质矿产局第三地质大队 | Device and method for pulling pile through existing bridge by shield |
| CN115030159A (en) * | 2022-08-01 | 2022-09-09 | 江苏建研建设工程质量安全鉴定有限公司 | Device for pulling out obstacle pile and operation method |
-
2019
- 2019-07-31 CN CN201921228519.XU patent/CN210562178U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110409447A (en) * | 2019-07-31 | 2019-11-05 | 江苏省地质矿产局第三地质大队 | Device and method for pulling pile through existing bridge by shield |
| CN115030159A (en) * | 2022-08-01 | 2022-09-09 | 江苏建研建设工程质量安全鉴定有限公司 | Device for pulling out obstacle pile and operation method |
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