CN218713067U

CN218713067U - Supporting device for upright excavation of urban cable channel

Info

Publication number: CN218713067U
Application number: CN202222695015.7U
Authority: CN
Inventors: 舒启军; 程浩; 李东津; 张华宇; 陈超步
Original assignee: State Nuclear Electric Power Planning Design & Research Institute Chongqing Co ltd
Current assignee: State Nuclear Electric Power Planning Design & Research Institute Chongqing Co ltd
Priority date: 2022-10-13
Filing date: 2022-10-13
Publication date: 2023-03-24
Anticipated expiration: 2032-10-13

Abstract

The utility model discloses a supporting device for upright excavation of city cable channel, including the steel-pipe pile, this steel-pipe pile comprises two sections along its axis direction, wherein including the exposed section that is located the top, the below of exposed section is for inserting the district, and exposes the section and insert district smooth transition, can dismantle on the lateral wall of exposed section and be connected with the guard plate. After a mechanical drilling machine is adopted to lead holes on the ground, the steel pipe pile is pressed in or driven into, the inner inserting pipe is inserted into the steel pipe pile, the inverted cone at the lower end of the inner inserting pipe is contacted with the end parts of the movable sleeves, the movable sleeves are extruded to slide on the guide rods through wedge fit between the inner inserting pipe and the movable sleeves, the grouting holes are extended out to be inserted into a soil layer, then grouting is carried out into the steel pipe pile, slurry seeps out of the inserting sections from the plurality of grouting holes to be combined with surrounding soil, the defects that the supporting period is long and the pile is not easy to sink can be effectively overcome by adopting a method of leading the holes firstly and then sinking the pile, the effects of treating a foundation and reinforcing a soil body are achieved, and the effectiveness of supporting is improved.

Description

Supporting device for upright excavation of urban cable channel

Technical Field

The utility model relates to a excavation supporting technology field, concretely relates to a supporting device that is used for upright excavation of city cable channel.

Background

The urban cable channel excavation generally adopts the slope excavation, and area is great, and foundation ditch engineering has regionalism, and different geological conditions correspond different foundation ditch engineering, and the degree of depth and the plane shape of foundation ditch have very big influence to the stability and the deformation of foundation ditch support system, to different foundation ditch engineering, need have different support systems.

The original method of vertical excavation is to adopt reinforced concrete retaining wall support, steel sheet pile support and the like. The reinforced concrete retaining wall is time-consuming and labor-consuming in supporting, long in period and complicated in process; the steel sheet pile support has great limitation on implementation because the steel sheet pile support cannot sink piles under the condition that a backfill soil layer, particularly a throwing and filling area has boulders.

SUMMERY OF THE UTILITY MODEL

The object of the present invention is to provide a supporting device for upright excavation of urban cable channel, which is detailed in the following description.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a pair of a supporting device for upright excavation of city cable channel, including the steel-pipe pile, this steel-pipe pile comprises two sections along its axis direction, wherein including the exposed section that is located the top, the below of exposed section is for inserting the section, and exposed section and insert section smooth transition, can dismantle on the lateral wall of exposed section and be connected with the guard plate, insert on the lateral wall of section along its radial grouting hole of having seted up a plurality of groups evenly distributed that runs through, this grouting hole of every group has a plurality of and is linear arrangement, insert the inner bottom middle part fixedly connected with montant of section, the guide arm of fixedly connected with a plurality of groups and grouting hole adaptation on the lateral wall of montant, and guide arm and grouting hole be same axis setting, every all the cover is equipped with the movable sleeve on the guide arm, and the diameter of movable sleeve is less than the grouting hole, the inside of steel-pipe pile is provided with and is used for gradually driving a plurality of movable sleeves from last to stretching out the top subassembly of inserting the section.

When the supporting device for upright excavation of the urban cable channel is used, firstly, a mechanical drilling machine is used for guiding holes in the ground, the steel pipe pile is pressed in or driven into the holes, the inserting section is inserted into the ground, then the movable sleeves are driven to slide on the guide rods step by step from top to bottom through the supporting and jacking assembly, the movable sleeves are transversely inserted into a soil layer, then grouting is performed into the inside of the steel pipe pile, slurry seeps out from the grouting holes to combine with the inserting section and surrounding soil, the effects of treating a foundation and reinforcing the soil body are achieved, the supporting effectiveness is improved, and meanwhile, the protective plates are arranged on the exposed sections of the steel pipe pile to prevent broken stones or soil on the side wall of a foundation pit from falling.

Preferably, the supporting and jacking assembly comprises an inner inserting pipe, the inner inserting pipe is sleeved inside the steel pipe pile, the lower end of the inner inserting pipe is in an inverted cone shape and is matched with the movable sleeves, a plurality of movable grooves which are uniformly distributed penetrate through the side wall of the inner inserting pipe along the radial direction of the inner inserting pipe, and the movable grooves are respectively in one-to-one correspondence with the guide rods.

Preferably, one ends of the movable sleeves, which are far away from the center of the inserting section, are all sharp, and the circumferential surface of the movable sleeve is provided with a plurality of diversion trenches.

Preferably, the side wall of the guide rod is provided with a friction pad and is in contact with the inner wall of the movable sleeve.

Preferably, an inner groove is formed in the circumferential surface of the exposed section, a rotating sleeve is sleeved in the inner groove, a T-shaped sliding strip arranged along the axis direction of the rotating sleeve is fixedly connected to the side wall of the rotating sleeve, a T-shaped sliding groove matched with the T-shaped sliding strip is formed in the middle of the side wall of the protection plate, and plug-in components used for being fixedly connected with the two ends of the protection plate in a butt joint mode are arranged at the middle of the side wall of the protection plate.

Preferably, the plug assembly comprises a butt joint groove, the butt joint groove is formed in one end of the protection plate, the other end of the protection plate is fixedly connected with a butt joint strip, two ends of the butt joint groove and the butt joint strip penetrate through the butt joint strip along the axial direction of the exposed section, a plug rod is connected in the plug hole in the butt joint groove, and the diameter of each plug hole is the same.

Preferably, the end of the insert rod is provided with a thread, and the thread is connected with the end of the insert hole in a threaded manner.

Has the advantages that:

after a mechanical drilling machine is adopted for hole leading on the ground, a steel pipe pile is pressed or driven in, an inner inserting pipe is inserted into the steel pipe pile, the inverted cone at the lower end of the inner inserting pipe is contacted with the end parts of a plurality of movable sleeves, the movable sleeves are extruded to slide on a guide rod through wedge-shaped matching between the inner inserting pipe and the movable sleeves, a grouting hole is extended out to be inserted into a soil layer, then grouting is carried out into the steel pipe pile, slurry seeps out of the inserting section from the plurality of grouting holes to be combined with surrounding soil, the defects that the supporting period is long and pile sinking is difficult to achieve can be effectively overcome by adopting a method of leading the hole first and then sinking the pile, the effects of treating a foundation and reinforcing a soil body are achieved, and the effectiveness of supporting is improved.

Drawings

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

Fig. 1 is a perspective view of the present invention;

fig. 2 is a partial sectional and exploded perspective view of the present invention.

The reference numerals are explained below:

1. steel pipe piles; 1a, inserting a field; 1b, an exposed section; 2. a protection plate; 3. a jack-up assembly; 3a, inserting a tube; 3b, a movable groove; 4. a plug-in assembly; 4a, a butt joint groove; 4b, butting strips; 4c, a jack; 4d, inserting the rod; 4e, screw thread; 5. an inner groove; 6. rotating the sleeve; 7. a T-shaped slide bar; 8. a T-shaped chute; 9. Grouting holes; 10. a vertical rod; 11. a guide bar; 12. a movable sleeve.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-2, the utility model provides a supporting device for upright excavation of urban cable passageway, including steel-pipe pile 1, this steel-pipe pile 1 comprises two sections along its axis direction, wherein including the exposed section 1b that is located the top, the below of exposed section 1b is for inserting section 1a, and exposed section 1b with insert section 1a smooth transition, can dismantle on the lateral wall of exposed section 1b and be connected with guard plate 2, insert and radially run through the slip casting hole 9 of seting up a plurality of groups evenly distributed along it on section 1 a's the lateral wall, this slip casting hole 9 of every group has a plurality of and is the inline, insert inner bottom middle part fixedly connected with montant 10 of section 1a, the guide arm 11 of fixedly connected with a plurality of groups and slip casting hole 9 adaptation on montant 10's the lateral wall, and guide arm 11 and slip casting hole 9 are the same axis setting, all the cover is equipped with movable sleeve 12 on every guide arm 11, and the diameter of movable sleeve 12 is less than slip casting hole 9, the inside of steel-pipe pile 1 is provided with and is used for gradually stretches out the strut subassembly 3 of section 1a of inserting section from last to down.

As an optional implementation manner, the propping assembly 3 includes an inner inserting tube 3a, the inner inserting tube 3a is sleeved inside the steel pipe pile 1, the lower end of the inner inserting tube 3a is arranged in an inverted cone shape and is matched with the plurality of movable sleeves 12, a plurality of movable grooves 3b which are uniformly distributed are radially arranged on the side wall of the inner inserting tube 3a in a penetrating manner, the plurality of movable grooves 3b are respectively in one-to-one correspondence with the plurality of groups of guide rods 11, by arranging the inner inserting tube 3a and the movable grooves 3b, the inverted cone shape of the lower end of the inner inserting tube 3a can be contacted with the end portions of the plurality of movable sleeves 12 after being inserted into the steel pipe pile 1, the movable sleeves 12 are extruded to slide on the guide rods 11 through wedge-shaped matching between the inner inserting tube 3a and the movable sleeves, the inner inserting tube extends out of the grouting hole 9 into a soil layer, and the fixing effect is improved.

As an optional implementation manner, one end of each of the plurality of movable sleeves 12, which is far away from the center of the inserting section 1a, is sharp, and the circumferential surface of each movable sleeve 12 is provided with a plurality of diversion trenches, so that the movable sleeves 12 can be conveniently broken and inserted into the soil layer by sharply arranging the end parts of the movable sleeves 12, and meanwhile, the diversion trenches are arranged so that grouting can be conveniently performed from the diversion trenches to penetrate into gaps of the soil layer of the foundation pit.

As an optional embodiment, friction pads are arranged on the side walls of the guide rods 11 and are in contact with the inner walls of the movable sleeves 12, and the friction pads are arranged on the guide rods 11, so that the friction force between the guide rods 11 and the movable sleeves 12 can be improved, the movable sleeves 12 are prevented from accidentally sliding on the guide rods 11, and the stability of the steel pipe pile 1 when being inserted into the ground is improved.

As optional implementation mode, inner groovy 5 has been seted up on exposed section 1 b's the periphery, the cover is equipped with in inner groovy 5 and rotates cover 6, the T shape draw runner 7 that fixedly connected with set up along its axis direction on the lateral wall of rotating cover 6, T shape spout 8 with T shape draw runner 7 looks adaptation is seted up at the lateral wall middle part of guard plate 2, the both ends of guard plate 2 are provided with and are used for butt joint fixed grafting subassembly 4, through setting up inner groovy 5, rotate cover 6, T shape draw runner 7 and T shape spout 8, can be after steel-pipe pile 1 is squeezed into ground, peg graft T shape spout 8 and T shape draw runner 7, accomplish to fix guard plate 2 in the exposed section 1b outside, the setting that rotates cover 6 simultaneously can transversely rotate the position of adjusting T shape draw runner 7, the horizontal installation guard plate 2 of being convenient for.

As an optional implementation mode, the socket assembly 4 includes a docking slot 4a, the docking slot 4a is opened at one end of the protection plate 2, the other end of the protection plate 2 is fixedly connected with a docking strip 4b, both ends of the docking slot 4a and the docking strip 4b are all provided with a jack 4c along the axial direction of the exposed section 1b, the jack 4d is inserted in the jack 4c at the docking slot 4a, and the diameter of each jack 4c is the same, the end of the jack 4d is provided with a thread 4e, the thread 4e is in threaded connection with the end of the jack 4c, by providing the docking slot 4a, the docking strip 4b, the jack 4c, the jack 4d and the thread 4e, after the steel pipe piles 1 are driven into the ground, the protection plates 2 are respectively installed on the steel pipe piles 1, then the docking slot 4a is docked with the docking strip 4b, the jack 4d is simultaneously inserted into the docking slot 4a corner, the jack 4c on the docking strip 4b is rotated, the jack 4d is fixed in the jack 4c through the thread, and the connection between the two protection plates is simultaneously, and the foundation pit is convenient for improving the practicability of the foundation pit.

Adopt above-mentioned structure, when using, at first adopt mechanical drilling machine to draw the hole back on ground, the steel-pipe pile 1 is impressed or is squeezed into, make and insert land section 1b and insert ground, drive a plurality of movable sleeves 12 through propping a subassembly 3 from top to bottom gradually and slide on guide arm 11 afterwards, make movable sleeve 12 transversely insert the soil layer, slip casting to steel-pipe pile 1 inside afterwards, make the thick liquid ooze from a plurality of injected holes 9 and insert land section 1a and combine with soil around, reach the ground treatment, the effect of reinforcing the soil body, improve the validity of strutting, simultaneously through installing guard plate 2 on the exposed section 1b of steel-pipe pile 1 and avoiding rubble or the hack on the foundation ditch lateral wall to drop.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a supporting device that is used for upright excavation of city cable channel which characterized in that: including steel-pipe pile (1), this steel-pipe pile (1) comprises two sections along its axis direction, wherein including exposed section (1 b) that is located the top, the below of exposed section (1 b) is for inserting ground section (1 a), and exposed section (1 b) with insert ground section (1 a) smooth transition, can dismantle on the lateral wall of exposed section (1 b) and be connected with guard plate (2), insert on the lateral wall of ground section (1 a) along its radial grouting hole (9) of seting up a plurality of groups evenly distributed that run through, this grouting hole (9) of every group have a plurality of and be the inline, insert inner bottom middle part fixedly connected with montant (10) of ground section (1 a), guide arm (11) of fixedly connected with a plurality of groups and grouting hole (9) adaptation on the lateral wall of montant (10), and guide arm (11) and grouting hole (9) are same axis setting, every all the cover is equipped with movable sleeve (12) on guide arm (11), and the diameter of movable sleeve (12) is less than grouting hole (9), steel-pipe pile (1) is gradually be used for driving down the top subassembly (1 a) to stretch out from last movable sleeve (3).

2. A support device for upright excavation of urban cable ducts according to claim 1, characterized in that: the supporting and jacking assembly (3) comprises an inner inserting pipe (3 a), the inner inserting pipe (3 a) is sleeved inside the steel pipe pile (1), the lower end of the inner inserting pipe (3 a) is arranged in an inverted cone shape and is matched with a plurality of movable sleeves (12), a plurality of movable grooves (3 b) which are uniformly distributed are formed in the side wall of the inner inserting pipe (3 a) in a penetrating mode along the radial direction of the side wall, and the movable grooves (3 b) are in one-to-one correspondence with a plurality of groups of guide rods (11).

3. A support device for upright excavation of urban cable ducts according to claim 1, characterized in that: one ends of the movable sleeves (12) far away from the center of the inserting section (1 a) are all sharp, and the circumferential surface of the movable sleeve (12) is provided with a plurality of diversion trenches.

4. A support device for upright excavation of urban cable ducts according to claim 1, characterized in that: the side wall of the guide rod (11) is provided with a friction pad and is contacted with the inner wall of the movable sleeve (12).

5. A support device for upright excavation of urban cable ducts according to claim 1, characterized in that: the utility model discloses a protective plate, including the section of exposing, the cover has been seted up on the periphery of section (1 b) inner groovy (5), the cover is equipped with in inner groovy (5) and rotates cover (6), T shape draw runner (7) that fixedly connected with set up along its axis direction on the lateral wall of rotating cover (6), T shape spout (8) with T shape draw runner (7) looks adaptation are seted up at the lateral wall middle part of protective plate (2), the both ends of protective plate (2) are provided with and are used for butt joint fixed grafting subassembly (4).

6. A support device for upright excavation of urban cable ducts according to claim 5, characterized in that: including butt joint groove (4 a) in grafting subassembly (4), this butt joint groove (4 a) is seted up in the one end of guard plate (2), the other end fixedly connected with of guard plate (2) docks strip (4 b), all run through along the axis direction of naked section (1 b) in the both ends of butt joint groove (4 a) and butt joint strip (4 b) and seted up jack (4 c), it has inserted bar (4 d) to peg graft in jack (4 c) of butt joint groove (4 a) department, and the diameter of every jack (4 c) is the same.

7. A support device for upright excavation of urban cable ducts according to claim 6, characterized in that: the end part of the inserted bar (4 d) is provided with a thread (4 e), and the thread (4 e) is in threaded connection with the end part of the inserting hole (4 c).