CN114032908A - Reinforcement cage lowering device for pile foundation engineering and construction method thereof - Google Patents
Reinforcement cage lowering device for pile foundation engineering and construction method thereof Download PDFInfo
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- CN114032908A CN114032908A CN202111351561.2A CN202111351561A CN114032908A CN 114032908 A CN114032908 A CN 114032908A CN 202111351561 A CN202111351561 A CN 202111351561A CN 114032908 A CN114032908 A CN 114032908A
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- reinforcement cage
- lifting
- steel reinforcement
- lifting rope
- pile foundation
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/08—Sinking workpieces into water or soil inasmuch as not provided for elsewhere
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a steel reinforcement cage lowering device for pile foundation engineering and a construction method thereof, the device comprises a frame, wherein a lifting ring and a leg seat are arranged at the corner part of the frame, a pair of upward oppositely-opened turning plates are arranged in the middle of the frame, operation platforms and stress beams capable of adapting to and lifting steel reinforcement cages of different sizes are arranged at two sides of the frame, the two turning plates are closed at the beginning and surround a lower guide hole through semicircular notches at respective edges, a connecting plate is slidably matched without falling off the upper part of the stress beam, scales and clamping grooves are arranged along the lower part of the stress beam, a lifting hook and a limiting plate for centering and limiting a protective cylinder are respectively sleeved on the clamping grooves of corresponding scales according to the sizes of the steel reinforcement cage and the protective cylinder during working, one end of a lifting rope is connected onto the connecting plate, the other end of the lifting rope penetrates through a stiffening hoop at the top of the steel reinforcement cage and then is upwards connected with the lifting hook, and scales for auxiliary positioning are marked on the lifting rope. The invention has high lowering efficiency, low cost, capability of adapting to multiple pile diameters, accurate lowering to elevation, safe and reliable construction, simple operation and recycling.
Description
Technical Field
The invention belongs to the field of construction of building pile foundation engineering, and particularly relates to a reinforcement cage lowering device for pile foundation engineering and a construction method thereof.
Background
At present, in the bored concrete pile work progress, when transferring the steel reinforcement cage, the steel reinforcement cage is through welding in order to guarantee to transfer to the design elevation with hanging the muscle, and this mode of transferring has following problem: 1) the hanging ribs cannot be recycled, so that the cost is increased; 2) the length of the hanging bar has errors due to manual operation, if the steel reinforcement cage cannot guarantee a vertical state, the hanging bar is easy to incline, and potential quality hazards exist; 3) the hanging ribs are welded with the main ribs of the reinforcement cage, the main ribs are possibly disturbed in the process of earth excavation at the later stage, and potential quality hazards exist; 4) the hanging ribs are generally placed above the pile casing through the cross rods, the pile casing is possibly stressed to cause settlement, and pile elevation has errors.
Disclosure of Invention
The invention aims to provide a steel reinforcement cage lowering device for pile foundation engineering and a construction method thereof.
The technical scheme adopted by the invention is as follows:
the utility model provides a device is transferred to steel reinforcement cage for pile foundation engineering, be equipped with the frame of rings and leg seat including bight, the centre of frame is equipped with a pair of upwards to run from opposite directions the board that turns over, both sides all are equipped with operation platform and can adapt to and lift by crane not unidimensional steel reinforcement cage's atress roof beam, two turn over the board and close and surround into the pipe lower bore through the semicircular notch at respective edge initially, sliding fit that the upper portion of atress roof beam was not deviate from has the connecting plate, the lower part is equipped with scale and draw-in groove along the line, in operation, the lifting hook is put on the draw-in groove of corresponding scale with the limiting plate that is used for the spacing section of thick bamboo that protects of centering respectively according to steel reinforcement cage and the size cover that protects the section of thick bamboo, the one end of lifting rope is connected on the connecting plate, the other end upwards is connected with the lifting hook after passing the stiffening hoop at steel reinforcement cage top, mark has the scale that is used for assistance-localization real.
Furthermore, the frame comprises two longitudinal beams, a transverse beam positioned between the two longitudinal beams, and a lifting ring and a leg seat positioned at the corner, the transverse beam is positioned at two ends and two sides of the middle of the frame, the stress beam is positioned between the two transverse beams on the same side, the longitudinal beam, the transverse beam, the lifting ring, the leg seat and the stress beam are in full-welded connection, and the operating platform comprises a support welded on the frame and a flat plate paved on the support.
Furthermore, the stress beam is provided with a long groove, the upper side wall of the long groove is a plane straight line, the lower side wall of the long groove is provided with a plurality of bulges along the line, the lower part of the connecting plate is sleeved on the long groove and matched with the upper side wall of the long groove, and the adjacent bulges form a clamping groove.
Furthermore, one end of the lifting rope is folded and locked through a U-shaped screw rod, a nut and a clamping pin which are installed on the connecting plate, and the other end of the lifting rope penetrates through the lifting hook and then is folded and locked through the independent U-shaped screw rod, the nut and the clamping pin.
Furthermore, a rotating shaft is arranged on the turning plate, two ends of the rotating shaft respectively penetrate through the clamping ring on the frame, and an expansion head used for preventing the rotation shaft from being separated from the clamping ring is arranged at the end part of the rotating shaft.
Furthermore, the turning plate is provided with an operating rod.
Further, the limiting plate is limited through the arc-shaped surface.
Furthermore, the lifting rope is marked with scales through red paint, and the scales need to be measured again at regular intervals.
A steel reinforcement cage transfer construction method for pile foundation engineering adopts the steel reinforcement cage transfer device for pile foundation engineering, firstly, the whole device is lifted to the hole edge by lifting equipment and is horizontally supported to be placed, then a lifting hook and a limiting plate are sleeved on clamping grooves with corresponding scales according to the sizes of the steel reinforcement cage and a protective cylinder respectively to ensure that the lifting position of the lifting hook is positioned at the edge of the steel reinforcement cage, the protective cylinder can be centered by a limiting plate, then one end of a lifting rope is connected on a connecting plate, the other end of the lifting rope penetrates through a stiffening hoop at the top of the steel reinforcement cage and then is upwards connected with the lifting hook, meanwhile, the lifting rope is assisted and positioned by the scales on the lifting rope according to the design elevation, the hollow depth and the size relation of the device to ensure that the length of the lifting rope required input is obtained by adjustment, then the whole device and the steel reinforcement cage are lifted by the lifting equipment, and vertically fall to the whole device to be horizontally supported to be placed after the limiting rod at the top of the steel reinforcement cage is taken down, the steel reinforcement cage arrives design elevation promptly, then transfers the hole through the pipe and transfers the pipe, and the back is settled to the pipe, carries out clear hole operation and fills the construction, fills the completion back, removes the lifting rope and is connected with the connecting plate, and the lifting rope descends naturally, then hangs away whole device and lifting rope through lifting by crane equipment.
Furthermore, the field leveling work is done and the steel plate is laid before the construction, so that the whole device can be horizontally placed at the hole edge in a supporting manner.
The invention has the beneficial effects that:
the invention has high lowering efficiency, and the lowering is undertaken by the frame, the stress beam, the connecting plate, the lifting hook and the lifting rope, and the lifting rope is used for lifting to replace the lifting rib, so that the lap welding of the lifting rib and the manufacturing time of the lifting rib are reduced; the invention has low construction cost, reduces the waste of the hanging bar and shortens the construction time; the invention can adapt to the construction of a multi-pile-diameter cast-in-place pile, the positions of the lifting hook and the limiting plate are respectively adjusted according to the sizes of the steel reinforcement cage and the pile casing, and only the weight of the steel reinforcement cage and the depth of the hollow hole are required to be considered for configuring the lifting rope; the steel reinforcement cage lifting device can accurately and accurately lower the steel reinforcement cage to the elevation, and the lowering position of the steel reinforcement cage can be controlled by positioning the height of the lifting rope; the construction is safe and reliable, the vertical stress of the lifting rope is more stable than that of the lifting rib, the protective cylinder can be centered by the limiting plate, and the turnover plate can also control the installation and disassembly processes of the guide pipe without colliding with the steel reinforcement cage; the invention has the advantages of convenient lifting, simple operation and recycling use.
Drawings
Fig. 1 is a plan view of a reinforcement cage lowering device for pile foundation engineering according to an embodiment of the present invention.
Fig. 2 is a schematic working diagram of a reinforcement cage lowering device for pile foundation engineering in the embodiment of the invention.
Fig. 3 is a schematic connection diagram of the stress beam, the connecting plate, the limiting plate and the hook in the embodiment of the invention.
FIG. 4 is a schematic view of one end of a lifting rope of the embodiment of the present invention folded and locked by a U-shaped screw, a nut and a bayonet lock installed on a connecting plate.
Figure 5 is a schematic view of the other end of the lifting rope in an embodiment of the invention folded over after passing through the hook and secured by a separate threaded rod, nut and bayonet.
In the figure: 1-a scaffold; 2-hoisting rings; 3-longitudinal beam; 4-a snap ring; 5-a rotating shaft; 6-turning over the board; 7-operating lever; 8-a stressed beam; 9-transverse beam; 10-plate; 11-a connecting plate; 12-a leg rest; 13-a limiting plate; 14-a hook; 15-a stiffening hoop; 16-a lifting rope; 17-bayonet lock; 18-a screw cap; 19-U-shaped screw.
Detailed Description
The invention is further described below with reference to the figures and examples.
As shown in fig. 1 to 3, a steel reinforcement cage lowering device for pile foundation engineering comprises a frame with a hanging ring 2 and a leg base 12 at the corner, a pair of upward oppositely-opened turning plates 6 is arranged in the middle of the frame, operation platforms and stress beams 8 capable of adapting to and lifting steel reinforcement cages of different sizes are arranged at the two sides of the frame, initially, the two turning plates 6 are closed and form a guide lower hole through semicircular notches at the respective edges, a connecting plate 11 is in sliding fit with the upper part of the stress beam 8 without falling off, and scales and clamping grooves are arranged along the lower part of the stress beam, when in work, lifting hook 14 and the limiting plate 13 that is used for centering spacing to protect a section of thick bamboo are put on the draw-in groove of corresponding scale according to the size cover of steel reinforcement cage and a section of thick bamboo respectively, and the one end of lifting rope 16 is connected on connecting plate 11, and the other end upwards is connected with lifting hook 14 after passing stiffening hoop 15 at steel reinforcement cage top, and lifting rope 16 superscript has the scale that is used for assistance-localization real-time.
As shown in fig. 1 and 2, in the present embodiment, the frame includes two longitudinal beams 3, a transverse beam 9 located between the two longitudinal beams 3, and a hanging ring 2 and a leg base 12 located at a corner, the transverse beam 9 is located at two ends and two sides in the middle of the frame, the stressed beam 8 is located between the two transverse beams 9 on the same side, the longitudinal beams 3, the transverse beam 9, the hanging ring 2, the leg base 12 and the stressed beam 8 are fully welded and connected, the operation platform includes a bracket 1 welded on the frame and a flat plate 10 laid on the bracket 1, and the structure is simple, stable and reliable.
As shown in fig. 1 and 2, in the present embodiment, a rotating shaft 5 is disposed on the turning plate 6, two ends of the rotating shaft 5 respectively penetrate through the snap ring 4 on the frame, and an enlarged head for preventing the rotating shaft 5 from coming off from the snap ring 4 is disposed at an end of the rotating shaft 5. As shown in fig. 1 and 2, in the present embodiment, the operation lever 7 is provided on the flap 6.
As shown in fig. 3, in this embodiment, the stress beam 8 is provided with an elongated slot, an upper side wall of the elongated slot is a straight plane line, a plurality of protrusions are arranged along a lower side wall line, a lower portion of the connecting plate 11 is sleeved on the elongated slot and is matched with the upper side wall of the elongated slot, and adjacent protrusions form a clamping slot, so that the clamping slot and the connecting plate sliding slot can be machined by cutting at one time.
As shown in fig. 4 and 5, in this embodiment, one end of the lifting rope 16 is folded and locked by the U-shaped screw 19, the nut 18 and the latch 17 installed on the connecting plate 11, and the other end of the lifting rope 16 passes through the hook 14 and is folded and locked by the independent U-shaped screw 19, the nut 18 and the latch 17, so that the connection is simple and reliable, and the operation is convenient.
In the present embodiment, the limit plate 13 is limited by an arc-shaped surface. In the embodiment, the lifting rope 16 is marked with scales through red paint, the scales need to be measured again at regular intervals, and the precision and the measuring range of the scales are determined according to actual conditions.
The materials and the sizes of all components on the device are set according to actual requirements, in the embodiment, the longitudinal beam 3 is made of 10-size I-steel, the height is 10cm, and the length is 2.8 m; the transverse beams 9 on the two sides of the middle of the frame are square tubes, and are 63cm long, 5cm wide, 10cm high and 5mm thick; the transverse beams 9 at the two ends of the frame are square tubes, and the transverse beams are 56cm long, 10cm high, 7cm wide and 5mm thick; the leg seat 12 is a square tube with the height of 40cm, the length of 7cm, the width of 7cm and the thickness of 5 mm; the stress beam 8 is a solid steel plate, and is 5cm thick, 10cm high and 1.4m long; the support 1 adopts a steel bar, and the flat plate 10 adopts an iron sheet plate; the turning plate 6 is made of a steel plate, the thickness is 1cm, the length is 66cm, the width is 17cm, and the diameter of a guide pipe lowering hole is 250 mm; the operating rod 7 is made of round steel and has the diameter of 20 mm.
A steel reinforcement cage transfer construction method for pile foundation engineering adopts the steel reinforcement cage transfer device for pile foundation engineering: before construction, field leveling work is carried out and steel plates are laid, so that the whole device can be horizontally placed at the hole edge; during construction, the whole device is lifted to the hole side through lifting equipment and placed in a horizontally supporting mode, then the lifting hook 14 and the limiting plate 13 are sleeved on clamping grooves with corresponding scales according to the sizes of a steel reinforcement cage and a protective cylinder respectively, the lifting position of the lifting hook 14 is ensured to be located at the edge of the steel reinforcement cage, the protective cylinder can be centered through the limiting plate 13, then one end of a lifting rope 16 is connected to the connecting plate 11, the other end of the lifting rope penetrates through a stiffening hoop 15 at the top of the steel reinforcement cage and then is upwards connected with the lifting hook 14, meanwhile, the length of the lifting rope 16 required to be input is ensured to be adjusted through auxiliary positioning of the scales on the lifting rope 16 according to the designed elevation, the limiting rod at the top of the steel reinforcement cage is taken down, the lifting rope vertically falls to the whole device and is placed in the horizontally supporting mode, the steel reinforcement cage reaches the designed elevation, and then the guide pipe is placed through a guide pipe lowering hole, after the guide pipe is arranged, hole cleaning operation and pouring construction are carried out, after pouring is finished, the connection between the lifting rope 16 and the connecting plate 11 is released, the lifting rope 16 naturally descends, and then the whole device and the lifting rope 16 are lifted away through lifting equipment.
The invention has high lowering efficiency, and the lowering is undertaken by the frame, the stress beam 8, the connecting plate 11, the lifting hook 14 and the lifting rope 16, and the lifting rope 16 is used for lifting to replace a lifting rib, so that the lap welding of the lifting rib and the manufacturing time of the lifting rib are reduced; the invention has low construction cost, reduces the waste of the hanging bar and shortens the construction time; the invention can adapt to the construction of a multi-pile-diameter cast-in-place pile, the positions of the lifting hook 14 and the limiting plate 11 are respectively adjusted according to the sizes of the steel reinforcement cage and the pile casing, and the lifting rope 16 is configured only by considering the weight of the steel reinforcement cage and the depth of the hollow hole; the steel reinforcement cage lifting device can accurately and accurately lower the steel reinforcement cage to the elevation, and the lowering position of the steel reinforcement cage can be controlled by positioning the height of the lifting rope 16; the construction is safe and reliable, the vertical stress of the lifting rope 16 is more stable than that of the lifting rib, the limiting plate 11 can ensure that the protective cylinder is centered, and the turning plate 6 can also control the installation and disassembly processes of the guide pipe without colliding with a reinforcement cage; the invention has the advantages of convenient lifting, simple operation and recycling use.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (10)
1. The utility model provides a device is transferred to steel reinforcement cage for pile foundation engineering which characterized in that: including the bight frame that is equipped with rings and leg rest, the centre of frame is equipped with a pair of board that turns over that upwards runs from opposite directions, both sides all are equipped with operation platform and can adapt to and lift by crane the atress roof beam of unidimensional steel reinforcement cage, two turn over the board and close and surround into the pipe discharge orifice through the semicircular notch at respective edge during the initial time, the sliding fit that the upper portion of atress roof beam did not deviate from has the connecting plate, the lower part is equipped with scale and draw-in groove along the line, in operation, the lifting hook is put on the draw-in groove of corresponding scale with the size cover that the limiting plate that is used for centering spacing protecting the section of thick bamboo according to steel reinforcement cage and protecting the section of thick bamboo respectively, the one end of lifting rope is connected on the connecting plate, the other end upwards is connected with the lifting hook after passing the stiffening hoop at steel reinforcement cage top, the scale that is used for assistance-localization real-size is marked on the lifting rope.
2. A reinforcement cage lowering device for pile foundation engineering according to claim 1, wherein: the frame comprises two longitudinal beams, a transverse beam positioned between the two longitudinal beams, a lifting ring and a leg seat, wherein the lifting ring and the leg seat are positioned at the corner part, the transverse beam is positioned at two ends and two sides in the middle of the frame, the stress beam is positioned between the two transverse beams on the same side, the longitudinal beam, the transverse beam, the lifting ring, the leg seat and the stress beam are in full-welding connection, and the operating platform comprises a support welded on the frame and a flat plate paved on the support.
3. A reinforcement cage lowering device for pile foundation engineering according to claim 1, wherein: the stress beam is provided with an elongated slot, the upper side wall of the elongated slot is a plane straight line, the lower side wall of the elongated slot is provided with a plurality of bulges along the line, the lower part of the connecting plate is sleeved on the elongated slot and matched with the upper side wall of the elongated slot, and the adjacent bulges form a clamping groove.
4. A reinforcement cage lowering device for pile foundation engineering according to claim 1, wherein: one end of the lifting rope is locked by a U-shaped screw rod, a nut and a clamping pin which are arranged on the connecting plate after being folded, and the other end of the lifting rope penetrates through the lifting hook to be folded and locked by an independent U-shaped screw rod, a nut and a clamping pin.
5. A reinforcement cage lowering device for pile foundation engineering according to claim 1, wherein: the turning plate is provided with a rotating shaft, two ends of the rotating shaft respectively penetrate through the clamping ring on the frame, and the end part of the rotating shaft is provided with an expansion head used for preventing the expansion head from being separated from the clamping ring.
6. A reinforcement cage lowering device for pile foundation engineering according to claim 1, wherein: the turning plate is provided with an operating rod.
7. A reinforcement cage lowering device for pile foundation engineering according to claim 1, wherein: the limiting plate is limited through the arc-shaped surface.
8. A reinforcement cage lowering device for pile foundation engineering according to claim 1, wherein: the lifting rope is marked with scales through red paint, and the scales need to be retested regularly.
9. A steel reinforcement cage lowering construction method for pile foundation engineering is characterized in that: the steel reinforcement cage lowering device for pile foundation engineering according to any one of claims 1 to 8, wherein the whole device is lifted to the hole edge by a lifting device and horizontally supported, then a lifting hook and a limiting plate are sleeved on the clamping grooves with corresponding scales according to the sizes of the steel reinforcement cage and the protecting cylinder respectively to ensure that the lifting position of the lifting hook is positioned at the edge of the steel reinforcement cage and the protecting cylinder can be centered by the limiting plate, then one end of a lifting rope is connected to the connecting plate, the other end of the lifting rope penetrates through a stiffening hoop at the top of the steel reinforcement cage and then is upwards connected with the lifting hook, meanwhile, the lifting rope is assisted and positioned by the scales on the lifting rope according to the size relation of the design elevation, the hole depth and the device to ensure that the length of the lifting rope required input is obtained by adjustment, then the whole device and the steel reinforcement cage are lifted by the lifting device, the limiting rod at the top of the steel reinforcement cage is taken down and then vertically falls to the whole device to be horizontally supported, and the steel reinforcement cage reaches the design elevation, and then, lowering the guide pipe through the guide pipe lowering hole, after the guide pipe is placed, performing hole cleaning operation and filling construction, after filling is completed, removing the connection between the lifting rope and the connecting plate, naturally lowering the lifting rope, and then lifting the whole device and the lifting rope away through lifting equipment.
10. The reinforcement cage lowering construction method for pile foundation engineering according to claim 9, wherein: and (3) performing field leveling work and paving a steel plate before construction, and ensuring that the whole device can be horizontally placed at the hole edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111351561.2A CN114032908B (en) | 2021-11-16 | 2021-11-16 | Reinforcement cage lowering device for pile foundation engineering and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111351561.2A CN114032908B (en) | 2021-11-16 | 2021-11-16 | Reinforcement cage lowering device for pile foundation engineering and construction method thereof |
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| Publication Number | Publication Date |
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| CN114032908A true CN114032908A (en) | 2022-02-11 |
| CN114032908B CN114032908B (en) | 2023-05-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111351561.2A Active CN114032908B (en) | 2021-11-16 | 2021-11-16 | Reinforcement cage lowering device for pile foundation engineering and construction method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014074304A (en) * | 2012-10-05 | 2014-04-24 | Cup Shokai Co Ltd | Hanger device, top end positioning tool for reinforcement cage, hanging method for reinforcement cage, and erecting method for reinforcement cage |
| CN111305192A (en) * | 2020-03-17 | 2020-06-19 | 中铁上海工程局集团有限公司 | Bridge pile foundation reinforcement cage positioning combined clamp and construction and use method thereof |
| CN211169518U (en) * | 2019-07-22 | 2020-08-04 | 中国水利水电第四工程局有限公司 | Pile foundation steel reinforcement cage hoisting device |
| CN212405145U (en) * | 2020-04-28 | 2021-01-26 | 中国葛洲坝集团市政工程有限公司 | Device for fixing pile foundation reinforcement cage |
| CN213653457U (en) * | 2020-09-28 | 2021-07-09 | 中电建十一局工程有限公司 | Steel reinforcement cage lifts by crane and mounting structure |
-
2021
- 2021-11-16 CN CN202111351561.2A patent/CN114032908B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014074304A (en) * | 2012-10-05 | 2014-04-24 | Cup Shokai Co Ltd | Hanger device, top end positioning tool for reinforcement cage, hanging method for reinforcement cage, and erecting method for reinforcement cage |
| CN211169518U (en) * | 2019-07-22 | 2020-08-04 | 中国水利水电第四工程局有限公司 | Pile foundation steel reinforcement cage hoisting device |
| CN111305192A (en) * | 2020-03-17 | 2020-06-19 | 中铁上海工程局集团有限公司 | Bridge pile foundation reinforcement cage positioning combined clamp and construction and use method thereof |
| CN212405145U (en) * | 2020-04-28 | 2021-01-26 | 中国葛洲坝集团市政工程有限公司 | Device for fixing pile foundation reinforcement cage |
| CN213653457U (en) * | 2020-09-28 | 2021-07-09 | 中电建十一局工程有限公司 | Steel reinforcement cage lifts by crane and mounting structure |
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| Publication number | Publication date |
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| CN114032908B (en) | 2023-05-16 |
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