阅读说明：本技术 基坑锚索孔口装置及基坑锚索孔口施工方法 (Foundation pit anchor cable orifice device and foundation pit anchor cable orifice construction method ) 是由 严毅 郝非 李宗鹏 毋铭 姚逢节 于 2019-09-29 设计创作，主要内容包括：本发明提供了一种基坑锚索孔口装置及基坑锚索孔口施工方法。其中,基坑锚索孔口装置包括：套管、封堵层和两个环形的密封件；套管用于置于支护桩的开孔内,套管的外壁与开孔之间的间隙填充封堵层,套管的内部用于穿设锚索成孔管；两个密封件分别与套管的两端一一对应连接且与锚索成孔管相接触。本发明中,通过套管与支护桩的开孔之间的间隙填充封堵层进行封堵和加固,提高了密封性能和开孔处的强度,避免出现塌孔,并且套管的两个端部均设置密封件,两个密封件与锚索成孔管均相接触,能够对套管与锚索成孔管之间的间隙进行封堵密封,有效地提高了基坑锚索孔口处的密封性,避免了出现涌水涌砂,保证了基坑的稳定性和安全性,结构简单,便于操作。(The invention provides a foundation pit anchor cable orifice device and a foundation pit anchor cable orifice construction method. Wherein, foundation ditch anchor rope drill way device includes: the sealing device comprises a sleeve, a plugging layer and two annular sealing elements; the sleeve is used for being arranged in the opening of the support pile, a gap between the outer wall of the sleeve and the opening is filled with a plugging layer, and an anchor cable hole forming pipe is arranged in the sleeve in a penetrating mode; the two sealing elements are respectively connected with the two ends of the sleeve in a one-to-one correspondence manner and are in contact with the anchor cable pore-forming pipe. According to the invention, the gap between the sleeve and the opening of the support pile is filled with the plugging layer for plugging and reinforcing, so that the sealing performance and the strength of the opening are improved, hole collapse is avoided, the two end parts of the sleeve are respectively provided with the sealing parts, the two sealing parts are respectively contacted with the anchor cable hole forming pipe, the gap between the sleeve and the anchor cable hole forming pipe can be plugged and sealed, the sealing performance of the anchor cable hole of the foundation pit is effectively improved, water and sand gushes are avoided, the stability and the safety of the foundation pit are ensured, the structure is simple, and the operation is convenient.)

1. A foundation pit anchor cable orifice device, comprising: the device comprises a sleeve (1), a plugging layer (2) and two annular sealing elements (3); wherein the content of the first and second substances,

the sleeve (1) is used for being placed in an opening of a support pile (4), a gap between the outer wall of the sleeve (1) and the opening is filled with the plugging layer (2), and an anchor cable hole forming pipe (5) is arranged in the sleeve (1) in a penetrating mode;

the two sealing elements (3) are respectively connected with two ends of the sleeve (1) in a one-to-one correspondence mode and are in contact with the anchor cable hole forming pipe (5).

2. The foundation pit anchor cable orifice device of claim 1, wherein the sleeve (1) and the anchor cable bore forming tube (5) have a predetermined clearance therebetween, and wherein each of the seals (3) extends towards the anchor cable bore forming tube (5) and contacts the anchor cable bore forming tube (5) to close the clearance between the sleeve (1) and the anchor cable bore forming tube (5).

3. The foundation pit anchor cable orifice device of claim 2, wherein each seal (3) comprises: a first sealing body (31) and a second sealing body (32) both having annular shapes; wherein the content of the first and second substances,

the first end of the first sealing body (31) is connected with the end part corresponding to the sleeve (1), the second end of the first sealing body (31) is vertically connected with the second sealing body (32), and the second sealing body (32) is arranged between the sleeve (1) and the anchor cable hole forming pipe (5) in a covering mode and is in contact with the anchor cable hole forming pipe (5) so as to seal a gap between the sleeve (1) and the anchor cable hole forming pipe (5).

4. The foundation pit anchor cable orifice device of claim 1, further comprising:

and the grouting pipe (6) is inserted in the plugging layer (2).

5. The foundation pit anchor cable orifice device of claim 4, further comprising:

and the slurry return pipe (7) is inserted in the plugging layer (2).

6. A foundation pit anchor cable orifice construction method is characterized by comprising the following steps:

a connecting step, wherein two ends of the sleeve are respectively provided with a sealing element;

a hole opening step, wherein holes are formed in the support piles;

a grouting step, namely placing the connected sleeve into the open hole, and grouting and plugging a gap between the open hole and the outer wall of the sleeve;

and an installation step, inserting an anchor cable hole forming pipe into the sleeve, wherein the anchor cable hole forming pipe penetrates through the two sealing pieces and is in contact with the two sealing pieces.

7. The method of claim 6, wherein the sleeve and the anchor line bore forming tube have a predetermined clearance therebetween, and wherein each of the sealing members extends toward and contacts the anchor line bore forming tube to close the clearance between the sleeve and the anchor line bore forming tube.

8. The method of constructing a foundation pit anchor cable orifice of claim 7, wherein each of the seals comprises: the first sealing body and the second sealing body are annular; wherein the content of the first and second substances,

the first end of the first sealing body is connected with the end part corresponding to the sleeve, the second end of the first sealing body is vertically connected with the second sealing body, and the second sealing body is arranged between the sleeve and the anchor cable hole forming pipe and is in contact with the anchor cable hole forming pipe.

9. The method of constructing a foundation pit anchor cable orifice of claim 6,

in the connecting step, a grouting pipe is arranged outside the sleeve;

in the grouting step, the grouting pipe and the sleeve are arranged in the open hole, and grouting is performed in the grouting pipe to plug a gap between the open hole and the outer wall of the sleeve.

10. The method of constructing a foundation pit anchor cable orifice of claim 9,

in the connecting step, a slurry return pipe is arranged outside the sleeve;

in the grouting step, the slurry return pipe and the sleeve are arranged in the open hole, and slurry in a gap between the open hole and the outer wall of the sleeve is led out from the slurry return pipe.

Technical Field

The invention relates to the technical field of building engineering, in particular to a foundation pit anchor cable orifice device and a foundation pit anchor cable orifice construction method.

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. In general, anchor cable construction adopts a steel sleeve hole forming process, and a steel sleeve penetrates through a temporary hole of a waterproof curtain without a blocking structure or is only sealed through a sealing element. Due to the fact that deep sand layers and abundant underground water exist in rivers and coastal alluvial areas, severe hole collapse is prone to occurring when anchor cables are constructed to form holes and penetrate through water-containing sand layers. And, when the anchor rope drill way was in the geological environment that ground water level is high, the water yield is abundant, the easy phenomenon that appears gushing water and gushing sand in a large number caused the foundation ditch to warp the increase, can appear the risk that the local landslide that collapses of foundation ditch even.

Disclosure of Invention

In view of the above, the invention provides a foundation pit anchor cable orifice device, and aims to solve the problems that hole collapse and water and sand gushing are easy to occur in an anchor cable orifice in the prior art. The invention further provides a foundation pit anchor cable orifice construction method.

In one aspect, the present invention provides a foundation pit anchor cable orifice device, comprising: the sealing device comprises a sleeve, a plugging layer and two annular sealing elements; the sleeve is used for being placed in the opening of the support pile, a gap between the outer wall of the sleeve and the opening is filled with a plugging layer, and an anchor cable hole forming pipe penetrates through the interior of the sleeve; the two sealing elements are respectively connected with the two ends of the sleeve in a one-to-one correspondence manner and are in contact with the anchor cable pore-forming pipe.

Further, in the foundation pit anchor cable orifice device, a preset gap is formed between the sleeve and the anchor cable hole forming pipe, and each sealing element extends towards the anchor cable hole forming pipe and is in contact with the anchor cable hole forming pipe so as to block the gap between the sleeve and the anchor cable hole forming pipe.

Further, in the above foundation pit anchor cable orifice device, each sealing member includes: the first sealing body and the second sealing body are annular; wherein, the first end of first seal all is connected with the tip that the sleeve pipe corresponds, and the second end and the perpendicular connection of second seal of first seal, second seal lid are located between sleeve pipe and the anchor rope pore-forming pipe and are contacted with anchor rope pore-forming pipe to the clearance between shutoff sleeve pipe and the anchor rope pore-forming pipe.

Further, above-mentioned foundation ditch anchor rope drill way device still includes: and the grouting pipe is inserted in the plugging layer.

Further, above-mentioned foundation ditch anchor rope drill way device still includes: and the slurry return pipe is inserted in the plugging layer.

According to the invention, the gap between the sleeve and the open pore of the support pile is filled with the plugging layer for plugging, so that the sealing performance is improved, the gap between the sleeve and the open pore can be reinforced, the strength of the open pore is improved, the occurrence of hole collapse is avoided, in addition, the sealing parts are arranged at the two end parts of the sleeve, and the two sealing parts are in contact with the anchor cable hole forming pipe, so that the gap between the sleeve and the anchor cable hole forming pipe can be plugged and sealed, the sealing performance of the anchor cable hole opening of the foundation pit is effectively improved, the phenomenon of water burst and sand burst is avoided, the stability and the safety of the foundation pit are ensured, the problems that the anchor cable hole opening is easy to collapse and water burst and sand burst are caused in the prior art are solved, the structure is simple, the operation is convenient.

On the other hand, the invention also provides a foundation pit anchor cable orifice construction method, which comprises the following steps: a connecting step, wherein two ends of the sleeve are respectively provided with a sealing element; a hole opening step, wherein holes are formed in the support piles; a grouting step, namely placing the connected sleeve into the open hole, and grouting and plugging a gap between the open hole and the outer wall of the sleeve; and an installation step, inserting an anchor cable hole forming pipe into the sleeve, wherein the anchor cable hole forming pipe penetrates through the two sealing pieces and is in contact with the two sealing pieces.

Further, in the foundation pit anchor cable orifice construction method, a preset gap is formed between the sleeve and the anchor cable hole forming pipe, and each sealing element extends towards the anchor cable hole forming pipe and is in contact with the anchor cable hole forming pipe so as to block the gap between the sleeve and the anchor cable hole forming pipe.

Further, in the above method for constructing an anchor cable orifice of a foundation pit, each sealing member includes: the first sealing body and the second sealing body are annular; wherein, the first end of first seal all is connected with the tip that the sleeve pipe corresponds, and the second end and the perpendicular connection of second seal of first seal, second seal lid are located between sleeve pipe and the anchor rope pore-forming pipe and are contacted with anchor rope pore-forming pipe.

Further, in the foundation pit anchor cable orifice construction method, in the connecting step, a grouting pipe is arranged outside the sleeve; in the grouting step, the grouting pipe and the sleeve are arranged in the open hole, and grouting is performed in the grouting pipe to plug the gap between the open hole and the outer wall of the sleeve.

Further, in the foundation pit anchor cable orifice construction method, in the connecting step, a slurry return pipe is further arranged outside the sleeve; in the grouting step, the slurry return pipe and the sleeve are arranged in the open hole, and slurry in a gap between the open hole and the outer wall of the sleeve is led out from the slurry return pipe.

According to the invention, the sealing performance is improved by grouting and plugging the gap between the opening and the outer wall of the sleeve, the gap between the sleeve and the opening can be reinforced, the strength of the opening is improved, hole collapse is avoided, the two end parts of the sleeve are respectively provided with the sealing piece, and the two sealing pieces are respectively contacted with the anchor cable hole forming pipe, so that the gap between the sleeve and the anchor cable hole forming pipe can be plugged and sealed, the sealing performance of the hole of the anchor cable of the foundation pit is effectively improved, the phenomenon of water burst and sand burst is avoided, the stability and the safety of the foundation pit are ensured, the structure is simple, the operation is convenient, and the construction speed is improved.

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 foundation pit anchor cable orifice device provided in an embodiment of the present invention;

fig. 2 is an enlarged schematic structural view of a foundation pit anchor cable orifice device provided in an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 2;

fig. 4 is a flowchart of a foundation pit anchor cable orifice construction method provided by an embodiment of the present invention.

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 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 embodiments with reference to the attached drawings.

Foundation ditch anchor rope drill way device embodiment:

referring to fig. 1-3, a preferred construction of the foundation pit anchor cable orifice device of the present embodiment is shown. As shown, foundation pit anchor cable orifice means includes: a sleeve 1, a plugging layer 2 and two annular sealing elements 3. Wherein, the supporting piles 4 are provided with openings which are in an inclined state and penetrate through the supporting piles 4 and the waterproof curtain. The sleeve 1 is arranged in the open pore, the outer diameter of the sleeve 1 is smaller than the inner diameter of the open pore, a gap is formed between the outer wall of the sleeve 1 and the inner wall of the open pore, and the gap is filled with the plugging layer 2. This shutoff layer 2 is that the thick cement thick liquid pours into to solidify in the clearance between the outer wall of sleeve pipe 1 and the trompil inner wall and forms to the clearance between the outer wall of shutoff sleeve pipe 1 and the trompil inner wall. The interior of the casing 1 is used for inserting the cable perforation pipe 5, that is, the cable perforation pipe 5 is arranged in the casing 1, but the cable perforation pipe 5 is not connected with the casing 1, and only the casing 1 is inserted.

The two sealing elements 3 are respectively connected with two ends of the sleeve 1 in a one-to-one correspondence mode, the two ends of the sleeve 1 are respectively provided with one sealing element 3, and each sealing element 3 is in contact with the anchor cable hole forming pipe 5. Specifically, sealing member 3 sets up in the tip of sleeve pipe 1, and sealing member 3 is the annular, and anchor rope becomes hole pipe 5 and wears to establish two sealing member 3 in proper order after contacting with two sealing member 3 homogeneous phases. In order to facilitate the disassembly and assembly, the anchor cable hole forming pipe 5 inevitably leaves a gap with the casing pipe 1 when penetrating the casing pipe 1, and each sealing element 3 is used for plugging and sealing the gap between the casing pipe 1 and the anchor cable hole forming pipe 5.

The connection between each sealing element 3 and the corresponding end of the casing 1 may be a detachable connection, preferably, the end of each sealing element 3 corresponding to the casing 1 is fixed by a band clamp.

It can be seen that, in this embodiment, the gap between the openings of the sleeve 1 and the support pile 4 is filled with the plugging layer 2 for plugging, so that the sealing performance is improved, the gap between the sleeve 1 and the openings can be reinforced, the strength of the openings is improved, hole collapse is avoided, the sealing parts 3 are arranged at the two ends of the sleeve 1, the two sealing parts 3 are in homogeneous contact with the anchor cable hole forming pipe 5, the gap between the sleeve 1 and the anchor cable hole forming pipe 5 can be plugged and sealed, the sealing performance of the hole opening of the anchor cable of the foundation pit is effectively improved, the phenomenon of water gushing and sand gushing is avoided, the stability and the safety of the foundation pit are ensured, the problems that the hole collapse and the sand gushing are easily caused at the hole opening of the anchor cable in the prior art are solved, the structure is simple, the operation is convenient, and the construction speed is.

With continued reference to fig. 1 to 3, in the above embodiment, a preset gap is formed between the casing 1 and the anchor cable hole forming pipe 5, specifically, the inner diameter of the casing 1 is greater than the outer diameter of the anchor cable hole forming pipe 5, and the preset gap may be determined according to actual conditions, which is not limited in this embodiment.

Each seal 3 extends to the cable bore forming tube 5 after the end connection corresponding to the casing 1, and each seal 3 is in contact with the cable bore forming tube 5, and each seal 3 is used for blocking a gap between the casing 1 and the cable bore forming tube 5.

Preferably, each seal 3 comprises: a first sealing body 31 and a second sealing body 32. The first sealing body 31 and the second sealing body 32 are both annular, the first end of the first sealing body 31 is connected with the end part corresponding to the sleeve 1, the second end of the first sealing body 31 is vertically connected with the second sealing body 32, and the second sealing body 32 is arranged between the sleeve 1 and the anchor cable hole forming pipe 5 in a covering mode. Specifically, the first sealing body 31 is connected to the outer wall of the end portion corresponding to the sleeve 1, the first sealing body 31 extends along the length direction of the sleeve 1, the second sealing body 32 is disposed at the end surface of the end portion corresponding to the sleeve 1 and extends toward the center of the sleeve 1, and the cross section formed by the second sealing body 32 and the first sealing body 31 is L-shaped.

The second sealing body 32 is in contact with the cable bore forming tube 5, and the second sealing body 32 is used for sealing a gap between the casing 1 and the cable bore forming tube 5.