CN214940104U

CN214940104U - Prestressed anchorage cable device of deep foundation pit

Info

Publication number: CN214940104U
Application number: CN202120674036.3U
Authority: CN
Inventors: 张岩; 刘利军; 侯瑞; 陈龙; 崔登云
Original assignee: CCCC Third Highway Engineering Co Ltd
Current assignee: CCCC Third Highway Engineering Co Ltd
Priority date: 2021-04-01
Filing date: 2021-04-01
Publication date: 2021-11-30
Anticipated expiration: 2031-04-01

Abstract

The application discloses prestressed anchorage cable device of deep basal pit, including base, anchor slab, steel strand wires, jack, first slip casting pipe, polyethylene pipe, support frame, direction anchor and card, base outer wall fixed surface connects bellows one end, base outer wall fixed surface connects first sealing ring one side, first slip casting pipe outer wall fixed surface connects anchor slab middle part and anchor backing plate middle part, fixed connection second slip casting pipe one end is encircleed on first slip casting pipe outer wall surface, first sealing ring middle part of steel strand wires outer wall fixed surface connects and second sealing ring middle part, direction anchor outer wall fixed surface connects the support frame outer wall, support frame outer wall fixed surface sliding connection card. Through setting up the card at the steel strand wires outer wall, and the card sets up to the round platform shape, and the steel strand wires drive the card and slide at the support frame inner wall when the steel strand wires receive pulling of outer wall, and the card shrink blocks the cable wire when sliding, is convenient for mention the cushioning effect when the steel strand wires receive the pulling force.

Description

Prestressed anchorage cable device of deep foundation pit

Technical Field

The application relates to a prestressed anchor cable device, in particular to a prestressed anchor cable device of a deep foundation pit.

Background

The prestressed anchor cable structure is widely used in hydropower engineering, is a structural system capable of bearing tensile force, penetrates through a reinforcing layer surface through a drilling hole or a reserved hole, anchors one end of an inner anchor head inside a rock stratum structure, stretches the outer anchor head of an anchor cable to be a free end outside the rock stratum structure so as to apply pressure on the layer surface, anchors unstable rock bodies or reinforced objects, and adopts a post-tensioning structure or a post-tensioning member, so as to maintain the tensile force of prestressed tendons and transmit the tensile force to an anchoring tool inside concrete, namely the prestressed anchor cable structure with the prestressed anchor, inhibits and reduces and eliminates the harm of a natural force field to an engineering geologic body or a structure through an actively established prestressed field.

The existing prestressed anchor cable for fixing generally adopts field assembly, loose type, the anticorrosion measure is not perfect, and the field assembly is difficult to control the production quality, so that the anticorrosion requirement of high standard is difficult to achieve, great hidden danger is brought to the long-term safe operation of engineering, the anchoring force is allowed to be fixed by the design of the prestressed anchor cable, once the anchor cable is subjected to excessive soil pressure or landslide force and exceeds the fixed design allowable value, the anchor cable can be damaged by outward sliding, and in the grouting process, the grouting process is long, the grouting quality is greatly influenced by a grouting pipe, so that the cement slurry is contracted, so that a secondary grouting pipe is generally pre-embedded for grouting, and the construction is difficult to construct according to the expectation. Therefore, the prestressed anchor cable device for the deep foundation pit is provided to solve the problems.

Disclosure of Invention

A prestressed anchor cable device of a deep foundation pit comprises a pad, an anchor plate, a steel strand, a jack, a first grouting pipe, a polyethylene pipe, a support frame, a guide anchor and a clamping piece, wherein the surface of the outer wall of the pad is fixedly connected with one end of a corrugated pipe, the surface of the outer wall of the pad is fixedly connected with one side of a first sealing ring, the surface of the outer wall of the first grouting pipe is fixedly connected with the middle part of the anchor plate and the middle part of an anchor backing plate, the surface of the outer wall of the first grouting pipe is fixedly connected with one end of a second grouting pipe in a surrounding manner, the surface of the outer wall of the steel strand is fixedly connected with the middle part of the first sealing ring and the middle part of the second sealing ring, the surface of the outer wall of the guide anchor is fixedly connected with the outer wall of the support frame, the surface of the outer wall of the support frame is fixedly connected with the clamping piece in a sliding manner, the surface of the outer wall of the guide anchor is fixedly connected with a protective cap through threads, and anticorrosion grease is arranged inside the guide anchor, and the surface of the outer wall of the steel strand is fixedly connected with a polyethylene pipe.

Further, be provided with anticorrosive grease between inside and the steel strand wires of polyethylene pipe, polyethylene outside of tubes wall fixed surface connects the second sealing washer.

Furthermore, the surface of the outer wall of one end of the cushion seat is fixedly connected with one end of a jack, and the surface of the outer wall of the jack is fixedly connected with one end of an anchor backing plate.

Further, the outer wall surface of the corrugated pipe and the outer wall surface of the polyethylene pipe are respectively fixedly connected with a grouting body.

Furthermore, the number of the second sealing rings is multiple, and every two of the second sealing rings are fixed at two ends of the polyethylene pipe.

Furthermore, the clamping pieces are in a circular truncated cone shape and are arranged in a surrounding mode by taking the steel strand as the center.

Further, the surface of the outer wall of the corrugated pipe is fixedly connected with a spiral rib, and the spiral rib is wound on the outer wall of the polyethylene pipe in a winding manner.

Further, the surface of the outer wall of the second sealing ring is fixedly connected with a first sealing ring, and the surface of the outer wall of the first sealing ring is fixedly connected with the inner side of the guide anchor.

Furthermore, the middle part of the outer wall surface of the anchor backing plate is fixedly connected with an anchor plate, the middle part of the anchor plate is slidably connected with a clamping piece, and the surface of the outer wall of the clamping piece is slidably connected with the outer wall of the steel strand.

Furthermore, the steel strands are arranged in a plurality of numbers, and the steel strands are arranged on the outer wall of the anchor backing plate in a surrounding mode.

The beneficial effect of this application is: the application provides a prestressed anchorage cable device of deep basal pit with corrosion prevention function and have buffer function.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

FIG. 1 is a schematic overall perspective view of an embodiment of the present application;

FIG. 2 is a schematic diagram of the overall internal structure of an embodiment of the present application;

FIG. 3 is a schematic side view of an embodiment of the present application;

fig. 4 is a schematic view of a portion a of fig. 2 according to an embodiment of the present disclosure.

In the figure: 1. backing block, 2, bellows, 3, spiral muscle, 4, polyethylene pipe, 5, slip casting body, 6, first slip casting pipe, 7, direction anchor, 8, first sealing washer, 9, first sealing ring, 10, second sealing ring, 11, support frame, 12, card, 13, anticorrosive grease, 14, helmet, 15, second slip casting pipe, 16, steel strand wires, 17, second sealing washer, 18, jack, 19, anchor backing plate, 20, anchor board, 21, clamping piece.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Referring to fig. 1-4, a prestressed anchor rope device for a deep foundation pit comprises a pad 1, an anchor plate 20, a steel strand 16, a jack 18, a first grouting pipe 6, a polyethylene pipe 4, a support frame 11, a guide anchor 7 and a clamping piece 12, wherein the surface of the outer wall of the pad 1 is fixedly connected with one end of a corrugated pipe 2, the surface of the outer wall of the pad 1 is fixedly connected with one side of a first sealing ring 9, the surface of the outer wall of the first grouting pipe 6 is fixedly connected with the middle part of the anchor plate 20 and the middle part of an anchor backing plate 19, the surface of the outer wall of the first grouting pipe 6 is fixedly connected with one end of a second grouting pipe 15 in a surrounding manner, the surface of the outer wall of the steel strand 16 is fixedly connected with the middle part of the first sealing ring 9 and the middle part of the second sealing ring 10, the surface of the outer wall of the guide anchor 7 is fixedly connected with the outer wall of the support frame 11, the surface of the outer wall of the support frame 11 is fixedly connected with the clamping piece 12 in a sliding manner, and the surface of the clamping piece 12 is connected with the steel strand 16 in a sliding manner, the outer wall surface of the guide anchor 7 is fixedly connected with a protective cap 14 through threads, anticorrosive grease 13 is arranged inside the protective cap 14 and inside the guide anchor 7, and the outer wall surface of the steel strand 16 is fixedly connected with a polyethylene pipe 4;

the anti-corrosion grease 13 is arranged between the inner part of the polyethylene pipe 4 and the steel strand 16, the outer wall surface of the polyethylene pipe 4 is fixedly connected with the second sealing ring 17, the outer wall surface of one end of the pad seat 1 is fixedly connected with one end of the jack 18, the outer wall surface of the jack 18 is fixedly connected with one end of the anchor backing plate 19, the outer wall surface of the corrugated pipe 2 and the outer wall surface of the polyethylene pipe 4 are respectively fixedly connected with the grouting body 5, the outer wall of the first grouting pipe 6 is provided with a plurality of second grouting pipes 15, the second grouting pipes 15 are surrounded around the polyethylene pipe 4, so that the full pouring is facilitated, the concrete is prevented from pressing the pouring pipes during the pouring, the pouring pipes are broken to cause the pouring to be incapable of being uniformly poured, the anchor cable is unstable, the potential safety hazard occurs, the second sealing rings 17 are provided with a plurality of numbers, and every two of the second sealing rings 17 are fixed at two ends of the polyethylene pipe 4, through pouring into anticorrosive grease 13 in helmet 14 inside and polyethylene pipe 4 inside, prevent that steel strand wires 16 from receiving the influence of building site humid environment and leading to the inside phenomenon such as rust to appear, cause the life of steel strand wires 16 to reduce, influence construction safety, card 12 sets up to the round platform shape, and uses steel strand wires 16 as the center and encircle the range, through set up card 12 at steel strand wires 16 outer wall, and card 12 sets up to the round platform shape, and steel strand wires 16 drive card 12 and slide at support frame 11 inner wall when steel strand wires 16 receive pulling of outer wall, and card 12 contracts when sliding and blocks steel strand wires 16, is convenient for mention cushioning effect when steel strand wires 16 receive the pulling force, bellows 2 outer wall fixed surface connects spiral muscle 3, spiral muscle 3 encircles and spirals at polyethylene pipe 4 outer walls, the first sealing washer 8 of second sealing ring 10 outer wall fixed surface connection, the surface of the outer wall of the first sealing ring 8 is fixedly connected with the inner side of a guide anchor 7, the corrugated pipe 2 is used for preventing cement slurry from contacting with an anchor rope, the free section of the anchor rope can be stretched when the prestressed tension lock is performed, the surface of the spiral rib 3 and the surface of concrete are larger, a special high-speed spiral rib 3 is used for solidification, when the reinforcing steel bar is firmer through the corrugated pipe, the middle part of the surface of the outer wall of the anchor backing plate 19 is fixedly connected with an anchor plate 20, the middle part of the anchor plate 20 is slidably connected with a clamping piece 21, the surface of the outer wall of the clamping piece 21 is slidably connected with the outer wall of a steel strand 16, the steel strand 16 is fixedly arranged in a conical hole of the anchor plate 20, when the steel strand 16 is tensioned by using a jack 18, after a designed stress value is reached, the jack 18 is slowly released and tensioned, the clamping piece 21 of the anchor is namely a steel strand 16 strap which is retracted at a constant speed to move to enter the anchor plate 20 to form an anchoring unit, and the stress of the steel strand 16 is transferred to a building structure through the anchor plate and the anchor backing plate 19, and a plurality of steel strands 16 are arranged, and the steel strands 16 are arranged on the outer wall of the anchor backing plate 19 in a surrounding manner.

When the anti-corrosion device is used, the steel strand 16 penetrates through the middle of the anchor plate 20 to penetrate through the jack 18, the polyethylene pipe 4 is sleeved on the outer wall of the steel strand 16, the anti-corrosion grease 13 is poured into the inner part of the polyethylene pipe 4, the second sealing ring 17 is sleeved on the outer wall of the polyethylene pipe 4, the first grouting pipe 6 and the second grouting pipe 15 are inserted into the inner part of the polyethylene pipe 4 along the reserved hole, the steel strand 16 penetrates through the first sealing ring 9, the second sealing ring 17 and the support frame 11, the clamping piece 12 is placed into the support frame 11 to pull the clamping piece 16 and the clamping piece 12 to be inserted into the inner wall of the support frame 11, the steel strand 16 is convenient to fix, the protective cap 14 is fixedly connected to the guide anchor 7 along the thread, the clamping piece 12 is arranged on the outer wall of the steel strand 16 and is in the shape of a circular truncated cone, when the steel strand 16 is pulled by the outer wall, the steel strand 16 drives the clamping piece 12 to slide on the inner wall of the support frame, and the clamping piece 12 contracts when sliding, the buffer effect is convenient to be mentioned when the steel strand 16 is under the tension, the first grouting pipe 6 and the second grouting pipe 15 are grouted inwards, the second grouting pipes 15 are arranged on the outer wall of the first grouting pipe 6 and are surrounded around the polyethylene pipe 4, so that sufficient pouring is convenient, the phenomenon that the pouring pipes cannot be poured uniformly due to the fact that the pouring pipes are broken due to the fact that concrete compresses the pouring pipes during pouring, the anchor cable is unstable, potential safety hazards occur, the phenomena that the steel strand 16 rusts and the like due to the fact that the steel strand 16 is influenced by the moist environment of a construction site are prevented by injecting the anti-corrosion grease 13 into the protective cap 14 and the polyethylene pipe 4, the service life of the steel strand 16 is shortened, construction safety is influenced, and the polyethylene pipe 4 is arranged between the grouting body 5 and the steel strand 16, so that no adhesive force exists between the steel strand 16 and a reserved hole in a concrete component, can slide to make the prestress be transferred by the anchors at two ends.

The application has the advantages that:

1. through setting up the card at the steel strand wires outer wall, and the card sets up to the round platform shape, and the steel strand wires drive the card and slide at the support frame inner wall when the steel strand wires receive pulling of outer wall, and the card shrink blocks the cable wire when sliding, is convenient for mention the cushioning effect when the steel strand wires receive the pulling force.

2. Through inside and the inside anticorrosive grease of pouring into of polyethylene pipe at the helmet, prevent that the steel strand wires from receiving the influence of building site humid environment and leading to inside phenomenon such as rust to appear, cause the life reduction of steel strand wires, influence construction safety, and through set up the polyethylene pipe between the steel strand wires at the slip casting body, make the steel strand wires and its reservation pore in the concrete member between not have the cohesive force, can slide, make the prestressing force all transmit by the ground tackle at both ends.

3. Through setting up first slip casting outer wall into a plurality of second slip casting pipe, and second slip casting pipe encircles around the polyethylene pipe, the abundant pouring of being convenient for, thoughtlessly earth oppression when avoiding pouring pours the pipe, leads to pouring the pipe and breaks and lead to pouring unable even pouring, leads to the anchor rope unstable, appears the potential safety hazard.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. The utility model provides a prestressed anchorage cable device of deep basal pit which characterized in that: comprises a pad seat (1), an anchor plate (20), a steel strand (16), a jack (18), a first grouting pipe (6), a polyethylene pipe (4), a support frame (11), a guide anchor (7) and a clamping piece (12), wherein the outer wall of the pad seat (1) is fixedly connected with one end of a corrugated pipe (2), the outer wall of the pad seat (1) is fixedly connected with one side of a first sealing ring (9), the outer wall of the first grouting pipe (6) is fixedly connected with the middle part of the anchor plate (20) and the middle part of an anchor backing plate (19), the outer wall surface of the first grouting pipe (6) surrounds one end of a fixedly connected second grouting pipe (15), the outer wall of the steel strand (16) is fixedly connected with the middle part of the first sealing ring (9) and the middle part of the second sealing ring (10), the outer wall of the guide anchor (7) is fixedly connected with the outer wall of the support frame (11), and the outer wall of the support frame (11) is fixedly connected with the clamping piece (12) in a sliding way, card (12) outer wall surface sliding connection steel strand wires (16), direction anchor (7) outer wall surface passes through screw thread fixed connection helmet (14), helmet (14) inside and direction anchor (7) inside are provided with anticorrosive grease (13), steel strand wires (16) outer wall surface fixed connection polyethylene pipe (4).

2. The prestressed anchorage cable device for a deep foundation pit as claimed in claim 1, wherein: be provided with anticorrosive grease (13) between inside and the steel strand wires (16) of polyethylene pipe (4), polyethylene pipe (4) outer wall fixed surface connects second sealing washer (17).

3. The prestressed anchorage cable device for a deep foundation pit as claimed in claim 1, wherein: the surface of the outer wall of one end of the cushion seat (1) is fixedly connected with one end of a jack (18), and the surface of the outer wall of the jack (18) is fixedly connected with one end of an anchor cushion plate (19).

4. The prestressed anchorage cable device for a deep foundation pit as claimed in claim 1, wherein: the outer wall surface of the corrugated pipe (2) and the outer wall surface of the polyethylene pipe (4) are respectively fixedly connected with a grouting body (5).

5. The prestressed anchorage cable device for a deep foundation pit as claimed in claim 2, wherein: the second sealing rings (17) are arranged in a plurality of numbers, and every two of the second sealing rings (17) are fixed at two ends of the polyethylene pipe (4) in a group.

6. The prestressed anchorage cable device for a deep foundation pit as claimed in claim 1, wherein: the clamping pieces (12) are in a circular truncated cone shape and are arranged in a surrounding mode by taking the steel stranded wires (16) as centers.

7. The prestressed anchorage cable device for a deep foundation pit as claimed in claim 1, wherein: bellows (2) outer wall surface fixed connection spiral muscle (3), spiral muscle (3) encircle to spiral at polyethylene pipe (4) outer wall.

8. The prestressed anchorage cable device for a deep foundation pit as claimed in claim 1, wherein: the outer wall surface of the second sealing ring (10) is fixedly connected with a first sealing ring (8), and the outer wall surface of the first sealing ring (8) is fixedly connected with the inner side of the guide anchor (7).

9. The prestressed anchorage cable device for a deep foundation pit as claimed in claim 1, wherein: the anchor backing plate (19) outer wall surface middle part fixed connection anchor slab (20), anchor slab (20) middle part sliding connection clamping piece (21), clamping piece (21) outer wall surface sliding connection steel strand wires (16) outer wall.

10. The prestressed anchorage cable device for a deep foundation pit as claimed in claim 1, wherein: the steel strand wires (16) are arranged in a plurality of numbers, and the steel strand wires (16) are arranged on the outer wall of the anchor backing plate (19) in a surrounding mode.