CN216108449U

CN216108449U - Underground continuous wall

Info

Publication number: CN216108449U
Application number: CN202122404504.8U
Authority: CN
Inventors: 刘彦彬; 马硕; 张圣明; 柯杰; 刘卫; 樊建东; 孙琪聪; 夏继辉; 李学强
Original assignee: Beijing Dongdi Geotechnical Engineering Co ltd
Current assignee: Beijing Dongdi Geotechnical Engineering Co ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2022-03-22
Anticipated expiration: 2031-09-30

Abstract

The utility model relates to an underground diaphragm wall, including first prefabricated plate, first prefabricated plate is hollow structure, a plurality of inlet openings have been seted up to one side that first prefabricated plate is close to the soil body, the inside vertical fixed water pipe that is provided with of first prefabricated plate, the roof of first prefabricated plate is provided with the drive for the fixed position of water pipe the driving piece that the water pipe drew water, one side that first prefabricated plate deviates from the soil body is provided with the second prefabricated plate. This application has and makes underground continuous wall can manger water prevention of seepage, reduces the damage that liquid such as groundwater caused the foundation ditch, improves underground continuous wall's water-proof effects's effect.

Description

Underground continuous wall

Technical Field

The application relates to the field of building construction, in particular to an underground continuous wall.

Background

The underground continuous wall is a continuous wall constructed under the ground for supporting the load of a building, intercepting water and preventing seepage or retaining soil. The underground continuous wall is excavated on the ground by using a special grooving machine along the periphery of an excavation project under the condition of slurry wall protection to form a groove with a certain length, then the manufactured reinforcement cage is placed in the groove section, underwater concrete pouring is carried out by adopting a conduit method to form a unit wall section, and all the wall sections are mutually connected by adopting a specific joint mode to form a continuous underground reinforced concrete wall. The underground continuous wall enclosure structure is in a closed shape, and a support or anchor rod system is added after the foundation pit is excavated. The construction of the main structure is facilitated, and the underground continuous wall is generally used as a bearing structure part of a building at present.

In view of the above-mentioned related art, the inventor believes that, since the lower continuous wall is located below the ground surface and has a deep depth, the liquid such as the seepage water or the groundwater located inside the soil body is used to seep out from the lower continuous wall into the interior of the foundation pit.

SUMMERY OF THE UTILITY MODEL

In order to make underground continuous wall can manger water prevention of seepage, reduce the damage that liquid such as groundwater caused the foundation ditch, improve underground continuous wall's water-proof effects, this application provides an underground continuous wall.

The application provides an underground continuous wall adopts following technical scheme:

the underground diaphragm wall comprises a first precast slab, wherein the first precast slab is of a hollow structure, a plurality of water inlet holes are formed in one side, close to a soil body, of the first precast slab, a water pipe is vertically and fixedly arranged in the first precast slab, a driving piece for driving the water pipe to pump water is fixedly arranged on the top wall of the first precast slab relative to the position of the water pipe, and a second precast slab is arranged on one side, away from the soil body, of the first precast slab.

By adopting the technical scheme, the first prefabricated plate is close to the soil body and is fixed with the soil body, so that the seepage water or the underground water seeping from the inside of the soil body can enter the inside of the first prefabricated plate from the water inlet hole in the first prefabricated plate, and the water is pumped out through the water pipe positioned in the inside of the first prefabricated plate, so that the underground diaphragm wall can retain water and prevent seepage, the damage of the foundation pit caused by the liquid such as the underground water and the like is reduced, and the waterproof effect of the underground diaphragm wall is improved.

Optionally, the side wall of the first precast slab is provided with a plurality of anchoring holes, and insertion structures are arranged inside the anchoring holes.

By adopting the technical scheme, the first prefabricated slab and the soil body can be more firmly connected through the splicing structure, the possibility of falling of the first prefabricated slab and the second prefabricated slab is reduced, and the construction safety is improved.

Optionally, the inserting structure includes a fixing seat, a reinforcing steel bar is fixedly disposed inside the fixing seat, a prestressed assembly is fixedly disposed on a side of the first precast slab away from the soil body, the side being opposite to the reinforcing steel bar, and a nut is connected to the reinforcing steel bar through a thread.

Through adopting above-mentioned technical scheme, through deviating from the one side pulling of soil body with the reinforcing bar orientation, and the fixed resilience that reduces the reinforcing bar through the nut for the prestressing force subassembly produces the prestressing force between first prefabricated plate and the soil body, and then makes the connection between soil body and the first prefabricated plate more firm, and reduces the possibility that first prefabricated plate emptys.

Optionally, the prestressing force subassembly is including relative first anchor piece and the second anchor piece that sets up, first anchor piece with the second anchor piece deviates from the fixed slot has been seted up to one side of the soil body, the inside fixed solid fixed ring that is provided with of fixed slot.

Through adopting above-mentioned technical scheme, through first anchor piece and second anchor piece with the reinforcing bar clamp relative between and place the inside at the fixed slot through solid fixed ring to be convenient for operating personnel to the prestressing force is applyed to the reinforcing bar, the operating personnel's of being convenient for operation.

Optionally, the fixing seat comprises a first pressure plate located on one side of the first precast slab close to the soil body, and a second pressure plate is fixedly arranged on one side of the first precast slab close to the soil body.

By adopting the technical scheme, the area of the force applied by the prestress is larger through the first pressure plate and the second pressure plate, so that the deformation of the first precast plate caused by too small area of the force applied is reduced.

Optionally, an insertion hole is formed in the bottom of the side wall of the first prefabricated plate, an insertion block is fixedly arranged at a position of the second prefabricated plate relative to the insertion hole, the insertion block can extend into the insertion hole, and a locking structure is arranged in the insertion hole.

By adopting the technical scheme, the insertion block on the second prefabricated plate extends into the insertion hole on the first prefabricated plate, so that the first prefabricated plate and the second prefabricated plate are relatively fixed, the possibility of toppling over of the second prefabricated plate is reduced, and the construction safety is improved.

Optionally, the locking structure includes a locking block, and is located locking groove has been seted up to the top of spliced eye, the locking block is located the inside and the relative sliding connection of locking groove, the draw-in groove has been seted up to the upper surface of splicing block, the locking block can stretch into the inside of draw-in groove.

Through adopting above-mentioned technical scheme, after the grafting piece of second prefabricated plate stretched into the inside of the spliced eye of first prefabricated plate for the locking piece enters into the inside of draw-in groove, thereby fixes first prefabricated plate and second prefabricated plate, prevents the inside roll-off of second prefabricated plate from first prefabricated plate.

Optionally, the inside sliding connection of spliced eye has the kicking block, the kicking block with locking block sliding connection, the inside holding tank has been seted up to one side for the position of kicking block in the spliced eye, the kicking block can enter into the inside of holding tank, works as the spliced block enters into the inside of spliced eye, the spliced block promotes the kicking block enters into the inside of holding tank.

Through adopting above-mentioned technical scheme, through the kicking block with the locking piece top in the inside of locking groove, when operating personnel stretched into the grafting piece of second prefabricated plate the inside of spliced eye, the grafting piece promoted the kicking block and enters into the inside of holding tank for the locking piece receives the inside that gravity dropped the draw-in groove and locks.

In summary, the present application includes at least one of the following beneficial technical effects:

1. through pressing close to the soil body with first prefabricated plate and fixed with the soil body for inside infiltration water or the groundwater of permeating from the soil body can enter into first prefabricated plate from the inlet opening on the first prefabricated plate, and take water out through the water pipe that is located first prefabricated plate inside, make underground diaphragm wall can manger water prevention of seepage, reduce the damage that liquid such as groundwater led to the fact the foundation ditch, improve underground diaphragm wall's water-proof effects.

2. Through pulling the reinforcing bar orientation and deviating from one side of soil body, and make the prestressing force subassembly produce the prestressing force between first prefabricated plate and soil body through the fixed of nut, and then make the connection between soil body and the first prefabricated plate more firm, and reduce the possibility that first prefabricated plate emptys.

3. Through the kicking block with the locking piece top in the inside of locking groove, when operating personnel stretched into the grafting piece of second prefabricated plate the inside of spliced eye, the grafting piece promoted the inside that the kicking block entered into the holding tank for the locking piece receives the inside that gravity dropped the draw-in groove and locks.

Drawings

FIG. 1 is a schematic view of the overall structure of an underground diaphragm wall in the embodiment of the present application;

fig. 2 is a schematic view illustrating the construction of a first prefabricated panel of an underground diaphragm wall according to an embodiment of the present application;

fig. 3 is a schematic view showing an internal structure of a first prefabricated panel of an underground diaphragm wall according to an embodiment of the present application;

FIG. 4 is a schematic view of the internal structure of a plugging hole of an underground diaphragm wall in the embodiment of the present application;

FIG. 5 is a schematic illustration of an insertion structure of an underground diaphragm wall in an embodiment of the present application;

fig. 6 is an exploded view of the structure of a pre-stressing assembly of an underground diaphragm wall in an embodiment of the present application.

Description of reference numerals: 1. a first prefabricated panel; 11. a water storage part; 111. a water inlet hole; 112. a water pipe; 113. a water pump; 12. an installation part; 121. inserting holes; 122. a locking groove; 123. a locking block; 124. a top block; 125. accommodating grooves; 2. a second prefabricated panel; 21. a first plate body; 22. a second plate body; 23. an insertion block; 231. a card slot; 3. a plug-in structure; 31. an anchoring hole; 32. a fixed seat; 321. a first pressure plate; 322. a second pressure plate; 33. reinforcing steel bars; 4. a pre-stressed assembly; 41. a first anchor tab; 411. a first clamping hole; 42. a second anchor tab; 421. a second clamping hole; 43. fixing grooves; 44. a fixing ring; 45. and a nut.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses underground continuous wall. Referring to fig. 1 and 2, the underground diaphragm wall comprises a first prefabricated slab 1, a second prefabricated slab 2 is arranged on one side, away from a soil body, of the first prefabricated slab 1, and the first prefabricated slab 1 and the second prefabricated slab 2 are connected through an inserting connection structure 3. A plurality of plug-in structures 3 are arranged on the side wall of the first prefabricated plate 1, and a prestress assembly 4 is arranged inside the plug-in structures 3.

Referring to fig. 2 and 3, the first precast slab 1 includes a water storage portion 11 located above and an installation portion 12 located below, the water storage portion 11 is of a hollow structure, and a plurality of water inlet holes 111 are formed in one side close to a soil body, so that liquid located inside the soil body can enter the water storage portion 11, and the leakage of the liquid to the inside of a foundation pit is reduced.

A water pipe 112 is vertically provided inside the water storage part 11, and the top of the water pipe 112 is protruded from the top wall of the first prefabricated panel 1 and fixedly connected thereto. A water pump 113 is fixedly provided at the top of the first prefabricated panel 1 with respect to the water pipe 112, and the liquid inside the first prefabricated panel 1 is pumped out by the water pump 113.

Referring to fig. 3 and 4, an insertion hole 121 is horizontally formed in one side of the mounting portion 12 away from the soil body, a locking groove 122 is vertically formed in the upper side of the inside of the insertion hole 121, and the locking groove 122 is communicated with the insertion hole 121. A locking block 123 is vertically and slidably connected inside the locking groove 122, and the lower surface of the locking block 123 is flush with the upper surface of the insertion hole 121.

The top block 124 is oppositely arranged inside the plug hole 121, and the top block 124 is gradually inclined towards the opening side of the plug hole 121 from the side relatively close to the plug hole to the side relatively far away from the plug hole. The top blocks 124 are respectively positioned on two opposite side walls of the insertion hole 121 of the first prefabricated plate 1 and are connected with the first prefabricated plate 1 in a sliding manner. The top wall of the top block 124 is in sliding contact with the locking block 123. The first prefabricated plate 1 is provided with accommodating grooves 125 respectively corresponding to the opposite sides of the two top blocks 124, and the top blocks 124 are slidably connected with the accommodating grooves 125, so that the first prefabricated plate can enter the accommodating grooves 125.

The second prefabricated plate 2 is of an L-shaped structure and comprises a first plate body 21 which is vertically arranged and a second plate body 22 which is fixedly arranged at the bottom of one side of the first plate body 21 close to the first prefabricated plate 1, wherein the second plate body 22 is horizontally arranged. And the second plate body 22 is horizontally and fixedly provided with an insertion block 23 relative to the position of the insertion hole 121, the insertion block 23 can extend into the insertion hole 121 and is connected in a relative sliding manner, a clamping groove 231 is vertically formed in the upper surface of the insertion block 23, and the depth of the clamping groove 231 in the vertical direction is lower than the height of the locking block 123.

When the inserting block 23 extends into the inside of the inserting hole 121, the inserting block 23 pushes the top block 124 to move towards the inside of the accommodating groove 125 on both sides, so that the top block 124 enters the inside of the accommodating groove 125, when the inserting block 23 gradually extends into the inside of the inserting hole 121, and the locking groove 231 is opposite to the locking groove 122, the locking block 123 enters the inside of the locking groove 231 by gravity, so that the locking block 123 fixes the second prefabricated plate 2 and the first prefabricated plate 1.

Referring to fig. 5 and 6, a plurality of anchoring holes 31 are formed in the side wall of the first precast slab 1, fixing seats 32 are arranged at the positions of the anchoring holes 31, each fixing seat 32 includes a first pressure plate 321 located on one side of the first precast slab 1 close to the soil body and a second pressure plate 322 located on one side of the first precast slab away from the soil body, the first pressure plate 321 is fixedly connected with the soil body through bolts, and the first pressure plate 321 is fixedly connected with the first precast slab 1.

The first pressure plate 321 and the second pressure plate 322 are rectangular structures, and the reinforcing steel bars 33 are fixedly arranged on the first pressure plate 321 along the axial direction of the anchoring holes 31, one ends of the reinforcing steel bars 33 are arranged in the soil body and are relatively fixed, and the other ends of the reinforcing steel bars 33 extend out from one side of the first precast slab 1 departing from the soil body.

The prestressed assembly 4 is arranged at a position, opposite to the reinforcing steel bar 33, of one side, away from the soil body, of the first prefabricated slab 1, the prestressed assembly 4 comprises a first anchoring piece 41 and a second anchoring piece 42 which are arranged oppositely, a first clamping hole 411 is formed in the position, opposite to the reinforcing steel bar 33, of the first anchoring piece 41, a second clamping hole 421 is formed in the position, opposite to the reinforcing steel bar 33, of the second anchoring piece 42, and the reinforcing steel bar 33 is clamped on the opposite inner sides by the first anchoring piece 41 and the second anchoring piece 42.

The first anchoring tab 41 and the second anchoring tab 42 are gradually inclined from the side close to the soil body to the side away from the soil body toward the direction away from the axis of the reinforcing steel bar 33, so that the first anchoring tab 41 and the second anchoring tab 42 are in a conical structure. The end of the first anchor tab 41 and the end of the second anchor tab 42 away from the soil body are provided with annular fixing grooves 43, the fixing grooves 43 and the reinforcing steel bars 33 are coaxially arranged, the fixing rings 44 are fixedly arranged in the fixing grooves 43, and the first anchor tab 41 and the second anchor tab 42 are fixed through the fixing rings 44.

The nuts 45 are arranged on the sides, departing from the soil body, of the first anchoring sheets 41 and the second anchoring sheets 42, the nuts 45 are in threaded connection with the reinforcing steel bars 33, one sides, close to the soil body, of the nuts 45 are abutted to the first anchoring sheets 41 and the second anchoring sheets 42, so that the reinforcing steel bars 33 are pulled towards the side, departing from the soil body, the reinforcing steel bars 33 are clamped through the first anchoring sheets 41 and the second anchoring sheets 42, the reinforcing steel bars 33 cannot move towards the side, close to the soil body, and the connection between the first prefabricated slab 1 and the soil body is firmer through prestress.

The implementation principle of an underground diaphragm wall in the embodiment of the application is as follows: the water inlet hole 111 on one side of the first prefabricated plate 1 close to the soil body enables groundwater or water inside the soil body to enter the cavity of the first prefabricated plate 1 from the water inlet hole 111, and then the water pump 113 pumps the liquid inside the cavity out through the water pipe 112.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. An underground diaphragm wall, characterized in that: the prefabricated plate structure comprises a first prefabricated plate (1), wherein the first prefabricated plate (1) is of a hollow structure, a plurality of water inlet holes (111) are formed in one side, close to a soil body, of the first prefabricated plate (1), a water pipe (112) is vertically and fixedly arranged in the first prefabricated plate (1), a driving piece for driving the water pipe (112) to pump water is fixedly arranged on the top wall of the first prefabricated plate (1) relative to the position of the water pipe (112), and a second prefabricated plate (2) is arranged on one side, away from the soil body, of the first prefabricated plate (1).

2. An underground diaphragm wall as claimed in claim 1, wherein: a plurality of anchoring holes (31) are formed in the side wall of the first prefabricated plate (1), and inserting structures (3) are arranged in the anchoring holes (31).

3. An underground diaphragm wall as claimed in claim 2, wherein: the inserting structure (3) comprises a fixed seat (32), a steel bar (33) is fixedly arranged inside the fixed seat (32), a prestressed assembly (4) is fixedly arranged on one side, away from the soil body, of the first prefabricated plate (1) relative to the position of the steel bar (33), and a nut (45) is connected to the steel bar (33) relative to the thread of the prestressed assembly (4).

4. An underground diaphragm wall as claimed in claim 3 wherein: the prestress assembly (4) comprises a first anchor sheet (41) and a second anchor sheet (42) which are oppositely arranged, a fixing groove (43) is formed in one side, deviating from the soil body, of the first anchor sheet (41) and the second anchor sheet (42), and a fixing ring (44) is fixedly arranged inside the fixing groove (43).

5. An underground diaphragm wall as claimed in claim 3 wherein: the fixed seat (32) comprises a first pressure plate (321) which is positioned on one side of the first precast slab (1) close to the soil body, and a second pressure plate (322) is fixedly arranged on one side of the first precast slab (1) close to the soil body.

6. An underground diaphragm wall as claimed in claim 1, wherein: the bottom of the side wall of the first prefabricated plate (1) is provided with an inserting hole (121), the position of the second prefabricated plate (2) relative to the inserting hole (121) is fixedly provided with an inserting block (23), the inserting block (23) can extend into the inserting hole (121), and a locking structure is arranged in the inserting hole (121).

7. An underground diaphragm wall as claimed in claim 6 wherein: the locking structure comprises a locking block (123), a locking groove (122) is formed in the upper portion of the inserting hole (121), the locking block (123) is located in the locking groove (122) and connected in a sliding mode, a clamping groove (231) is formed in the upper surface of the inserting block (23), and the locking block (123) can stretch into the clamping groove (231).

8. An underground diaphragm wall as claimed in claim 7 wherein: the inside sliding connection of spliced eye (121) has top piece (124), top piece (124) with locking piece (123) sliding connection, holding tank (125) have been seted up to spliced eye (121) inside for one side of the position of top piece (124), top piece (124) can enter into the inside of holding tank (125), works as spliced block (23) enters into the inside of spliced eye (121), spliced block (23) promote top piece (124) enter into the inside of holding tank (125).