CN211472485U - Prestressed anchor cable structure for controlling anchor cable deformation and prestress loss - Google Patents
Prestressed anchor cable structure for controlling anchor cable deformation and prestress loss Download PDFInfo
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- CN211472485U CN211472485U CN201921626485.XU CN201921626485U CN211472485U CN 211472485 U CN211472485 U CN 211472485U CN 201921626485 U CN201921626485 U CN 201921626485U CN 211472485 U CN211472485 U CN 211472485U
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Abstract
The utility model provides a control anchor rope warp and prestressing force loss's prestressed anchorage cable structure. The structure includes: the anchor cable positioning device comprises an anchor cable hole-forming sleeve, an anchor cable, a grouting pipe, an anchor cable positioning bracket and an anchor; the anchor cable pore-forming sleeve is arranged in an anchor cable hole in a soil layer, and the outer wall of the anchor cable pore-forming sleeve is abutted against the soil layer and used for temporarily supporting the soil layer so as to ensure the linearity of the anchor cable hole; the anchor cable, the grouting pipe and the anchor cable positioning bracket are arranged in the anchor cable hole forming sleeve, and the tail part of the anchor cable extends out of the crown beam and is connected to the anchor device for locking; the anchor cable positioning brackets are arranged in the anchor cable hole forming sleeve side by side along the length direction of the anchor cable and used for fixing the anchor cable so as to prevent the anchor cable from sinking or warping in a soil layer; and the grouting pipe is used for grouting the anchor cable so as to fix the position of the anchor cable in the soil layer, and the anchor device is used for tensioning, locking and redrawing the anchor cable. The utility model discloses the deformation of steerable anchor rope reduces prestressing force loss, and construction speed is fast and convenient operation, and the anchor rope warp for a short time, and the foundation ditch slope warp and safe assurance.
Description
Technical Field
The utility model relates to a building engineering technical field particularly, relates to a control anchor rope warp and prestressing loss's prestressed anchorage cable structure.
Background
In the deep foundation pit construction process of urban building engineering, the foundation pit supporting type of the support piles, the stirring pile waterproof curtain and the prestressed anchor cables is an economical and reasonable foundation pit supporting scheme. Due to the fact that deep soft soil layers are arranged in river and coastal alluvial areas, the total length of the anchor cable is long, the anchoring section and the free section are located in the soft soil layers, deformation values and elongation values of the anchor cable are large in the anchor cable construction pore-forming, anchor cable laying, grouting and prestress tensioning processes, and meanwhile due to the fact that the soil layers are soft, the soil body is deformed and the stress conditions are complex, the anchor cable prestress loss is prone to occurring. Therefore, the deep foundation pit of the pile-anchor support type in the coastal soft soil area is easy to deform to a large extent, so that the potential safety hazard of the foundation pit is caused, and the normal use of the foundation pit is influenced.
Disclosure of Invention
In view of this, the utility model provides a control anchor rope warp and prestressing force loss's prestressed anchorage cable structure aims at solving current river and coastal alluvial area and has the deformation value and the elongation value that deep soft soil layer leads to the anchor rope and the problem of anchor rope prestressing force loss is big on the left side.
The utility model provides a control anchor rope warp and prestressing force loss's prestressed anchorage cable structure, this structure includes: the anchor cable positioning device comprises an anchor cable hole-forming sleeve, an anchor cable, a grouting pipe, an anchor cable positioning bracket and an anchor; the anchor cable pore-forming sleeve is arranged in an anchor cable hole in a soil layer, and the outer wall of the anchor cable pore-forming sleeve is abutted against the soil layer and used for temporarily supporting the soil layer so as to ensure the linearity of the anchor cable hole; the anchor cable, the grouting pipe and the anchor cable positioning bracket are arranged in the anchor cable hole forming sleeve, the tail part of the anchor cable extends out of the crown beam and is locked on an anchor device, and the anchor device is used for tensioning, locking and redrawing the anchor cable to meet the preset requirement; the anchor cable positioning brackets are arranged in the anchor cable hole forming sleeve side by side along the length direction of the anchor cable, and a plurality of notches are formed in the axial direction of the anchor cable positioning brackets and used for fixing the anchor cable to prevent the anchor cable from sinking or warping in a soil layer; the middle position of the anchor cable positioning bracket is also provided with a positioning hole for fixing the grouting pipe, and the grouting pipe is used for grouting the anchor cable so as to fix the position of the anchor cable in a soil layer.
Further, in the prestressed anchor cable structure for controlling anchor cable deformation and prestress loss, a supporting water stopping structure is arranged on the side wall of the soil layer and is used for supporting and stopping the soil layer.
Further, in the prestressed anchor cable structure for controlling anchor cable deformation and prestress loss, the crown beam is arranged above the supporting water-stop structure, and the side wall of the crown beam is pressed against the soil layer to fix the anchor.
Further, in the prestressed anchor cable structure for controlling the deformation and the prestress loss of the anchor cable, a base plate is arranged at the connecting position between the crown beam and the anchor.
Further, in the prestressed anchor cable structure for controlling the deformation and the prestress loss of the anchor cable, the tail part of the anchor cable extends out of the anchor cable hole forming sleeve and sequentially penetrates through the crown beam and the base plate.
Further, in the above prestressed anchor cable structure for controlling the deformation and the prestress loss of the anchor cable, the anchor cable is a wire harness formed by a plurality of steel strands.
The utility model provides a control anchor rope warp and prestressing force loss's prestressed anchorage cable structure through set up anchor rope pore-forming sleeve pipe in the anchor rope hole to carry out temporary support to the soil layer on the inner wall in anchor rope hole in order to guarantee the straightness nature in anchor rope hole, guarantee pore-forming quality, reduce the disturbance destruction to soft soil layer, avoid collapsing the hole; meanwhile, the anchor cable hole-forming sleeve has high rigidity, so that the linear radian of the anchor cable hole caused by the self weight of a drill bit and a drill rod in the hole-forming process can be reduced, the disturbance damage to a soft soil layer is avoided, the deformation value and the elongation value of the anchor cable are prevented from being increased in the hole-forming, anchor cable laying, grouting and prestress tensioning processes, and the loss of the prestress of the anchor cable can be avoided; adopting an anchorage device to perform tensioning locking and redrawing on the anchor cable so as to meet the design requirement; meanwhile, an anchor cable positioning bracket is arranged on the anchor cable to fixedly support the anchor cable and the grouting pipe so as to prevent the anchor cable from sinking or warping in the soil layer; and grouting the anchor cable by adopting a grouting pipe to fix the position of the anchor cable in the soil layer. Compared with the prior art, the deformation of the anchor cable can be controlled, the prestress loss is reduced, the construction speed is high, the operation is convenient, and the standardized components are quickly installed; meanwhile, the anchor cable has small deformation, and the deformation and the safety of the foundation pit slope are ensured.
Further, cement grout is injected into the anchor cable hole through the grouting pipe, the anchoring section and the free section of the anchor cable are fully filled with the cement grout, the anchor cable hole-forming sleeve is slowly drawn out in combination with the grouting condition in the grouting process, in addition, in the grouting process, in order to avoid the downward deflection of the anchor cable bundle caused by the hole collapse of the anchor cable hole and the sinking of the anchor cable bundle, the anchor cable bundle is temporarily fixed, so that the deformation of the anchor cable and the deformation of the foundation pit slope are reduced, and the construction safety is ensured.
Particularly, the supporting water-stopping structure and the crown beam are arranged on the side wall of the soil layer to bear horizontal extrusion force and vertical shearing force so as to avoid collapse of the soil layer. Compared with the prior art, the deformation of the anchor cable can be controlled, the prestress loss is reduced, the construction speed is high through the structure, the operation is convenient, and the standardized components are quickly installed; meanwhile, the anchor cable has small deformation, and the deformation and the safety of the foundation pit slope are ensured.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic structural diagram of a prestressed anchor cable structure for controlling anchor cable deformation and prestress loss according to an embodiment of the present invention;
3 fig. 3 2 3 is 3 a 3 cross 3- 3 sectional 3 view 3 taken 3 at 3 the 3 position 3 a 3- 3 a 3 in 3 fig. 3 1 3. 3
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Referring to fig. 1 to 2, schematic structural diagrams of a prestressed anchor cable structure for controlling deformation and prestress loss of an anchor cable according to an embodiment of the present invention are shown. As shown, the structure includes: the anchor cable positioning device comprises an anchor cable hole-forming sleeve 1, an anchor cable 2, a grouting pipe 3, an anchor cable positioning bracket 4, a base plate 5, an anchor 6, a supporting water-stopping structure 7 and a crown beam 8; wherein the content of the first and second substances,
the anchor rope pore-forming sleeve 1 is arranged in an anchor rope hole in a soil layer, and the outer wall of the anchor rope hole is abutted against the soil layer to support the soil layer. Specifically, the anchor cable hole forming sleeve 1 is arranged in the anchor cable hole to support a soil layer on the inner wall of the anchor cable hole so as to ensure the linearity of the anchor cable hole, thereby ensuring the hole forming quality, reducing disturbance damage to a soft soil layer and avoiding hole collapse; meanwhile, the anchor cable hole forming sleeve 1 is high in rigidity, and the linear radian of the anchor cable hole caused by the self weight of a drill bit and a drill rod in the hole forming process can be reduced. Wherein, anchor rope pore-forming sleeve pipe 1 can be the steel casing pipe to guarantee its rigidity, especially to the river and the coastal alluvial area have deep soft soil layer, can further ensure the pore-forming quality, avoid the disturbance destruction to soft soil layer, and then avoid in pore-forming, anchor rope, slip casting, prestressing force stretch-draw in-process the grow of deformation value and elongation value of anchor rope 2, and can avoid the loss of the prestressing force of anchor rope 2.
The anchor cable 2, the grouting pipe 3 and the anchor cable positioning bracket 4 are all arranged in the anchor cable hole-forming sleeve 1, the tail part of the anchor cable 2 extends out of the crown beam 8 and locks the anchor 6, and the anchor 6 is used for tensioning, locking and redrawing the anchor cable 2 to meet the preset requirement. Specifically, the anchor cable 20 is divided into a tension section, a free section, and an anchor section in this order from the tail portion to the front end. The free section and the anchoring section are embedded in the anchor cable hole forming sleeve 1, namely the inside of the anchor cable hole. The anchor cable 2 is a wire bundle composed of a plurality of steel strands. The side surface of each steel strand in the free section can be wrapped with a hose. The arrangement of the hose ensures that the steel strands in the free section 22 interval cannot be fixed by the anchor cable pore-forming sleeve 1, so that the steel strands in the free section interval can be stretched in the hose in the process of pre-stress stretching of the anchor cable 2. The steel strands in the free section interval can be parallel to each other and arranged at a certain distance, and preferably, the steel strands can be uniformly distributed in a circular shape. The tail part of the anchor cable 2 extends out of the anchor cable hole-forming sleeve 1, sequentially penetrates through the crown beam 8 and the base plate 5 and then is connected to an anchorage device 6 outside the anchor cable hole-forming sleeve 1, so that the anchor cable 2 is tensioned, locked and redrawn through the anchorage device 6, and the anchor cable 2 can meet preset requirements, the preset requirements can be determined according to actual conditions, and no limitation is imposed on the anchor cable 2 in the embodiment. Slip casting pipe 3 sets up in anchor rope pore-forming sleeve pipe 1 and sets up in the inside that many steel strands enclosed the circular structure of establishing, and with parallel interval setting between the steel strand wires.
The anchor cable positioning brackets 4 are arranged in the anchor cable pore-forming sleeve 1 side by side along the length direction of the anchor cable 2, and a plurality of notches 41 are axially arranged on the anchor cable positioning brackets 4 and used for fixing the anchor cable 2 to prevent the anchor cable 2 from sinking or warping in a soil layer; the middle position of the anchor cable positioning bracket 4 is further provided with a positioning hole 42 for fixing the grouting pipe 3, and the grouting pipe 3 is used for grouting the anchor cable 2 to fix the position of the anchor cable 2 in the soil layer. Specifically, the anchor cable positioning bracket 4 may be provided at the anchoring section to support the plurality of steel strands and the grout pipe 3 at the anchoring section of the anchor cable 2. The anchor cable positioning brackets 4 can be made of wide and thick circular sheet-shaped plastic brackets, and the space between the anchor cable positioning brackets 4 is encrypted by combining the situation of entering the soil layer, so that the anchor cable 2 is ensured not to sink into the soft soil layer, and preferably, the space between the anchor cable positioning brackets 4 can be 1m-1.5 m. The steel strand wires of the anchor cable 2 can be fixed at the position of the notch 41 through binding, and the grouting pipes 3 can be fixed at the position of the positioning holes 42 through binding, so that the three types of whole bodies can be conveniently conveyed into the anchor cable holes through the anchor cable hole-forming sleeve 1. The setting of anchor rope location bracket 4 can be so that the steel strand wires that constitute anchor rope 2 can not twine together, make anchor rope 2 can keep the shape in the installation, and so as to avoid the contact between slip casting pipe 3 and anchor rope 2 to be connected, exist mutually independently between slip casting pipe 3 and the anchor rope 2 promptly, and then anchor rope 2 buries underground in the thick liquid when being convenient for follow-up slip casting in order to prevent anchor rope 2 from sinking or downwarping in the soil layer, and slip casting pipe 3 promotes and rotates along with the slip casting simultaneously, slip casting pipe 3 is taken out while slip casting promptly, and then avoid the damage of slip casting pipe 3 and slip casting pipe 3 to bury and lead to the thick liquid shrink in the thick liquid and cause the problem that needs supplementary slip casting, the intensity of the anchor rope body has been improved, and slip casting makes anchor rope 2 fix the settlement position in the soil layer. The notches 41 are arranged in one-to-one correspondence with the steel strands and are uniformly distributed along the circumferential direction of the anchor cable positioning bracket 4.
And a supporting and water-stopping structure 7 is arranged on the side wall (the right side wall shown in figure 1) of the soil layer and is used for supporting and stopping the soil layer. In particular, the supporting and water-stopping structure 7 may support a structure of a pile, i.e., a water-stopping curtain combination, so as to prevent the side edges of the soil layer from collapsing and stop water thereof.
And a crown beam 8 is arranged above the supporting and water-stopping structure 7, and the side wall of the supporting and water-stopping structure is pressed on a soil layer to fix the anchorage device 6. Specifically, the crown beam 8 may be a reinforced concrete continuous beam disposed at the top of the support water stop structure 7, and has one function of connecting all pile foundations together to prevent the foundation pit, i.e., the top edge of the soil layer, from collapsing, and the other function of fixing the anchor 6 by assuming the horizontal extrusion force and the vertical shearing force during the construction such as drilling and grouting. Wherein, a backing plate 5 is arranged at the connecting position between the crown beam 8 and the anchorage device 6 for supporting the anchorage device 6.
In summary, in the prestressed anchor cable structure for controlling the deformation and the prestress loss of the anchor cable provided by the embodiment, the anchor cable hole forming sleeve 1 is arranged in the anchor cable hole to temporarily support the soil layer on the inner wall of the anchor cable hole so as to ensure the linearity of the anchor cable hole, ensure the hole forming quality, reduce the disturbance damage to the soft soil layer, and avoid hole collapse; meanwhile, the anchor cable hole-forming sleeve 1 has high rigidity, can reduce the linear radian of the anchor cable hole caused by the self weight of a drill bit and a drill rod in the hole-forming process, particularly for a river and a deep soft soil layer in a coastal alluvial area, avoids the deformation value and the elongation value of the anchor cable 2 from being increased in the hole-forming, anchor cable laying, grouting and prestress tensioning processes, and can avoid the loss of prestress of the anchor cable 2; adopting an anchorage device 6 to perform tensioning locking and redrawing on the anchor cable 2 so as to meet the design requirement; meanwhile, an anchor cable positioning bracket 4 is arranged on the anchor cable 2 to fixedly support the anchor cable 2 and the grouting pipe 3 so as to prevent the anchor cable 2 from sinking or warping in the soil layer; and grouting the anchor cable by adopting the grouting pipe 3 so as to fix the position of the anchor cable in the soil layer. Compared with the prior art, the structure can control the deformation of the anchor cable 2 and reduce the prestress loss, and has the advantages of high construction speed, convenient operation and quick installation of standardized components; meanwhile, the anchor cable 2 is small in deformation, and the deformation and safety of the foundation pit slope are guaranteed.
Further, cement grout is injected into the anchor cable hole through the grouting pipe 3, the anchoring section and the free section of the anchor cable 2 are fully filled with the cement grout, the anchor cable hole-forming sleeve 1 is slowly drawn out in combination with the grouting condition in the grouting process, in addition, in the grouting process, in order to avoid the downward deflection of the anchor cable bundle caused by the hole collapse of the anchor cable hole and the sinking of the anchor cable bundle, the anchor cable bundle is temporarily fixed, so that the deformation of the anchor cable and the deformation of the foundation pit slope are reduced, and the construction safety is ensured.
In particular, the supporting water-stopping structure 7 and the crown beam 8 are arranged on the side wall of the soil layer to bear horizontal leaning force and vertical shearing force so as to avoid collapse of the soil layer. Compared with the prior art, the deformation of the anchor cable 2 can be controlled, the prestress loss is reduced, the construction speed is high, the operation is convenient, and the standardized components are quickly installed; meanwhile, the anchor cable 2 is small in deformation, and the deformation and safety of the foundation pit slope are guaranteed.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (6)
1. A prestressed anchor cable structure for controlling the deformation and the prestress loss of an anchor cable, comprising: the anchor cable positioning device comprises an anchor cable hole-forming sleeve, an anchor cable, a grouting pipe, an anchor cable positioning bracket and an anchor; wherein the content of the first and second substances,
the anchor cable pore-forming sleeve is arranged in an anchor cable hole in a soil layer, and the outer wall of the anchor cable pore-forming sleeve is abutted against the soil layer and used for temporarily supporting the soil layer so as to ensure the linearity of the anchor cable hole;
the anchor cable, the grouting pipe and the anchor cable positioning bracket are arranged in the anchor cable hole forming sleeve, the tail part of the anchor cable extends out of the crown beam and is locked on an anchor device, and the anchor device is used for tensioning, locking and redrawing the anchor cable to meet the preset requirement;
the anchor cable positioning brackets are arranged in the anchor cable hole forming sleeve side by side along the length direction of the anchor cable, and a plurality of notches are formed in the axial direction of the anchor cable positioning brackets and used for fixing the anchor cable to prevent the anchor cable from sinking or warping in a soil layer; the middle position of the anchor cable positioning bracket is also provided with a positioning hole for fixing the grouting pipe, and the grouting pipe is used for grouting the anchor cable so as to fix the position of the anchor cable in a soil layer.
2. The prestressed anchor rope structure for controlling deformation and loss of prestress of an anchor rope according to claim 1,
and a supporting water-stopping structure is arranged on the side wall of the soil layer and is used for supporting and stopping the soil layer.
3. The prestressed anchor rope structure for controlling deformation and loss of prestress of an anchor rope according to claim 2,
the crown beam is arranged above the supporting water-stopping structure, and the side wall of the crown beam is pressed against the soil layer to fix the anchorage device.
4. The prestressed anchor rope structure for controlling deformation and loss of prestress of an anchor rope according to claim 3, wherein a pad plate is provided at a connecting position between said crown beam and said anchor.
5. The prestressed anchor rope structure for controlling deformation and loss of prestress of an anchor rope according to claim 4, wherein said anchor rope has a tail portion extending from inside said anchor rope hole-forming sleeve and sequentially passing through said crown beam and said pad.
6. The prestressed anchor rope structure for controlling deformation and loss of prestress of an anchor rope according to any one of claims 1 to 5, wherein said anchor rope is a strand consisting of a plurality of steel strands.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921626485.XU CN211472485U (en) | 2019-09-27 | 2019-09-27 | Prestressed anchor cable structure for controlling anchor cable deformation and prestress loss |
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| CN201921626485.XU CN211472485U (en) | 2019-09-27 | 2019-09-27 | Prestressed anchor cable structure for controlling anchor cable deformation and prestress loss |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110761292A (en) * | 2019-09-27 | 2020-02-07 | 中国二十冶集团有限公司 | Prestressed anchor cable structure and prestressed anchor cable construction method |
| CN115752829A (en) * | 2022-11-24 | 2023-03-07 | 青岛理工大学 | Anchor cable stress monitoring device and method |
-
2019
- 2019-09-27 CN CN201921626485.XU patent/CN211472485U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110761292A (en) * | 2019-09-27 | 2020-02-07 | 中国二十冶集团有限公司 | Prestressed anchor cable structure and prestressed anchor cable construction method |
| CN115752829A (en) * | 2022-11-24 | 2023-03-07 | 青岛理工大学 | Anchor cable stress monitoring device and method |
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