CN209923937U

CN209923937U - Deep foundation pit supporting device

Info

Publication number: CN209923937U
Application number: CN201920362984.6U
Authority: CN
Inventors: 谢兴昶; 汪秋华; 孙首元
Original assignee: Guangdong Hongzhan Construction Engineering Co Ltd
Current assignee: Guangdong Hongzhan Construction Engineering Co Ltd
Priority date: 2019-03-21
Filing date: 2019-03-21
Publication date: 2020-01-10
Anticipated expiration: 2029-03-21

Abstract

The utility model discloses a deep basal pit supporting device, including being located the slope of putting in the soil layer outside, it is the echelonment to put the slope, and puts the slope outside and be equipped with first protective structure and second protective structure, first protective structure is located puts the slope upper end, and first protective structure is L shape, first protective structure comprises strengthening rib, soil nail anchor and wire net, strengthening rib cross arrangement is in the soil layer outside, and ties up together through the steel wire bundle between the strengthening rib, be equipped with a plurality of fixed plate on the strengthening rib, the setting of soil nail anchor slope is in the soil layer, and the one end and the fixed plate fixed connection of soil nail anchor, the wire net cladding is in the strengthening rib outside, the first protective structure outside is equipped with first built-in fitting. Compare with traditional deep basal pit supporting device, the utility model discloses it is better to strut the effect, when taking place to subside because of the too big soil layer that leads to of precipitation, only needs in time to carry out the soil layer and backfills, just can effectively avoid the damage of strut the system.

Description

Deep foundation pit supporting device

Technical Field

The utility model relates to a construction technical field specifically is a deep basal pit supporting device.

Background

The deep foundation pit refers to a project which has an excavation depth of more than 5 meters (including 5 meters), or has a depth of less than 5 meters, but has particularly complicated geological conditions, surrounding environments and underground pipelines. The foundation pit support is a retaining, reinforcing and protecting measure adopted for the side wall of the foundation pit and the surrounding environment in order to ensure the safety of the construction of an underground structure and the surrounding environment of the foundation pit. Traditional deep basal pit is under construction, generally all adopts the form of putting the slope excavation to be under construction, and when partial district put the slope width not enough, can adopt simple and easy strutting arrangement to consolidate the great district of slope, uses under normal conditions, and not the problem, but when it meets the great weather of precipitation, the soil layer takes place to subside easily to lead to strutting the system and damaging.

To this end, a deep excavation supporting apparatus is proposed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a deep basal pit supporting device to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a deep foundation pit supporting device comprises a slope which is arranged outside a soil layer, wherein the slope is in a ladder shape, a first protective structure and a second protective structure are arranged outside the slope, the first protective structure is arranged at the upper end of the slope and is in an L shape, the first protective structure is composed of reinforcing ribs, soil nail anchors and a steel wire mesh, the reinforcing ribs are arranged outside the soil layer in a crossed mode and are bundled together through steel wires, a plurality of fixing plates are arranged on the reinforcing ribs, the soil nail anchors are obliquely arranged in the soil layer, one ends of the soil nail anchors are fixedly connected with the fixing plates, the steel wire mesh covers the outside of the reinforcing ribs, a first embedded part is arranged outside the first protective structure, the second protective structure is arranged at the lower end of the slope, the second protective structure is composed of supporting piles, retaining plates and backfill layers, the supporting piles are arranged outside the slope, the soil blocking plate is located between the slope and the supporting pile and is fixed on the supporting pile through screws, the backfill layer is located between the soil blocking plate and the slope, a second embedded part is arranged at the upper end of the second protection structure, and the second embedded part is fixedly connected with the first embedded part through a first pull rod.

The slope is reinforced by a supporting system consisting of a first protective structure and a second protective structure, the first protective structure mainly comprises reinforcing ribs, soil nail anchors and a steel wire mesh, the reinforcing ribs can be fixed on the outer side of the soil layer through the soil nail anchors, then the steel wire mesh is covered, and a layer of concrete layer is sprayed on the surface of the steel wire mesh, the second protective structure is arranged below the slope and mainly comprises supporting piles, soil retaining plates and backfill soil layers, the slope can be well supported through the supporting piles, the soil retaining plates and the backfill layers are matched, the structural stability of the slope is greatly enhanced, a row of stand columns are arranged on the steps of the slope, a supporting effect can be achieved on the first protective structure through top blocks on one sides of the stand columns, and a connecting and fixing effect can be achieved between the first protective structure and the second protective structure through first pull rods, when the soil layer subsides takes place for the downhill path upper strata like this, can play a effect of pulling first protective structure through first pull rod, as long as carry out timely material backfill, just can avoid strutting the damage of system.

Preferably, the slope is put and a layer of step is shared, and put the slope lower extreme and be located the outside of a fender pile and be equipped with the escape canal.

Preferably, be equipped with the stand on the step of putting the slope, the stand is located first protective structure's root, the stand is equipped with the toper kicking block towards one side of first protective structure, and the stand lower extreme is equipped with the second pull rod that is used for fixed fender pile.

This arrangement can provide an effect of fixing the support piles by the second tie rods.

Preferably, a shotcrete layer is arranged outside the first protective structure, and the thickness of the shotcrete layer is smaller than 5 cm.

Preferably, a reinforced cement plate for fixing the second pull rod is arranged on the outer side of the supporting pile, and the supporting pile is at least 50cm higher than the step.

Preferably, the first pull rod consists of a turn buckle and connecting rods, and the connecting rods are symmetrically arranged at two ends of the turn buckle.

This setting is through setting up the turn buckle on first pull rod, can be nimble adjust the pulling force.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model adopts a supporting system composed of a first protective structure and a second protective structure to reinforce the slope, the first protective structure mainly comprises a reinforcing rib, a soil nail anchor and a steel wire mesh, the reinforcing rib can be fixed outside the soil layer through the soil nail anchor, then the steel wire mesh is covered and a layer of concrete layer is sprayed on the surface of the steel wire mesh, the second protective structure is arranged below the slope and mainly comprises a supporting pile, a soil retaining plate and a backfill soil layer, the slope can be supported well through the supporting pile, the soil retaining plate and the backfill layer are matched, the structural stability of the slope is greatly enhanced, a row of stand columns are arranged on the steps of the slope, a supporting effect can be played on the first protective structure through the top blocks on one side of the stand columns, and a connecting and fixing effect can be played between the first protective structure and the second protective structure through the first pull rod, when the soil layer subsides takes place for the downhill path upper strata like this, can play a effect of pulling first protective structure through first pull rod, as long as carry out timely material backfill, just can avoid strutting the damage of system. Compare with traditional deep basal pit supporting device, the utility model discloses it is better to strut the effect, when taking place to subside because of the too big soil layer that leads to of precipitation, only needs in time to carry out the soil layer and backfills, just can effectively avoid the damage of strut the system.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a sectional view of a first protective structure of the present invention;

fig. 3 is a schematic structural view of the first pull rod of the present invention.

In the figure: 1. slope releasing; 2. a first guard structure; 3. a second protective structure; 4. reinforcing ribs; 5. anchoring with soil nails; 6. steel wire mesh; 7. a fixing plate; 8. a first embedded part; 9. supporting piles; 10. a soil guard plate; 11. a backfill layer; 12. a second embedded part; 13. a first pull rod; 14. a column; 15. a second pull rod; 16. and (3) reinforcing the cement board.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the utility model provides a deep foundation pit supporting device, which comprises a slope 1 located outside a soil layer, wherein the slope 1 is in a ladder shape, a first protective structure 2 and a second protective structure 3 are arranged outside the slope 1, the first protective structure 2 is located at the upper end of the slope 1, the first protective structure 2 is in an L shape, the first protective structure 2 is composed of a reinforcing rib 4, a soil nail anchor 5 and a steel wire mesh 6, the reinforcing rib 4 is arranged outside the soil layer in a crossed manner, the reinforcing ribs 4 are bound together through steel wires, a plurality of fixing plates 7 are arranged on the reinforcing rib 4, the soil nail anchor 5 is obliquely arranged in the soil layer, one end of the soil nail anchor 5 is fixedly connected with the fixing plates 7, the steel wire mesh 6 is coated outside the reinforcing rib 4, a first embedded part 8 is arranged outside the first protective structure 2, the second protective structure 3 is located at the lower end of the slope 1, and the second protective structure 3 is composed of supporting piles 9, retaining plates 10 and backfill layers 11, the supporting piles 9 are located on the outer side of the slope 1, the retaining plates 10 are located between the slope 1 and the supporting piles 9, the retaining plates 10 are fixed on the supporting piles 9 through screws, the backfill layers 11 are located between the retaining plates 10 and the slope 1, the second embedded parts 12 are arranged at the upper end of the second protective structure 3, and the second embedded parts 12 are fixedly connected with the first embedded parts 8 through first pull rods 13.

Specifically, the slope 1 has a layer of steps, and a drainage ditch is arranged at the outer side of the supporting pile 9 at the lower end of the slope 1.

Specifically, be equipped with stand 14 on the step of putting slope 1, stand 14 is located first protective structure 2's root, stand 14 is equipped with the toper kicking block towards one side of first protective structure 2, and the stand 14 lower extreme is equipped with second pull rod 15 that is used for fixed fender pile 9.

Specifically, a sprayed concrete layer is arranged outside the first protective structure 2, and the thickness of the sprayed concrete layer is smaller than 5 cm.

Specifically, a reinforced cement plate 16 for fixing the second pull rod 15 is arranged on the outer side of the support pile 9, and the support pile 9 is at least 50cm higher than the step.

Specifically, the first pull rod 13 is composed of a turn buckle and connecting rods, and the connecting rods are symmetrically arranged at two ends of the turn buckle.

When in use, the hole is punched at a preset position, then the soil nail anchor 5 is formed by inserting the steel bar and grouting, then, the reinforcing ribs 4 are laid at the upper ends of the slope 1, the soil nail anchors 5 are fixed with the reinforcing ribs 4 through screws, after the laying is finished, the steel wire meshes 6 are covered at the outer sides of the reinforcing ribs 4 and a layer of concrete is sprayed on the surfaces of the reinforcing ribs 4, when the concrete is sprayed, the first embedded parts 8 need to be preset, when the first protective structure 2 is laid, the holes are punched again so as to finish the casting of the support piles 9 and the upright posts 14, the holes of the second pull rods 15 are drilled on the slope 1 while the holes of the support piles 9 are drilled, after the construction of the support piles 9 is completed, the upright posts 14 are connected with the support piles 9 through the second pull rods 15, and then installing the soil retaining plate 10 on the support pile 9, finally backfilling a soil layer, and connecting the first protective structure and the second protective structure together through the first pull rod after backfilling the soil layer.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a deep basal pit supporting device, is including putting slope (1) that is located the soil layer outside, its characterized in that: the soil nail anchor is characterized in that the slope (1) is in a step shape, a first protective structure (2) and a second protective structure (3) are arranged on the outer side of the slope (1), the first protective structure (2) is located at the upper end of the slope (1), the first protective structure (2) is in an L shape, the first protective structure (2) is composed of reinforcing ribs (4), soil nail anchors (5) and steel wire meshes (6), the reinforcing ribs (4) are arranged on the outer side of a soil layer in a crossed mode, the reinforcing ribs (4) are bundled together through steel wires, a plurality of fixing plates (7) are arranged on the reinforcing ribs (4), the soil nail anchors (5) are obliquely arranged in the soil layer, one ends of the soil nail anchors (5) are fixedly connected with the fixing plates (7), the steel wire meshes (6) are wrapped on the outer side of the reinforcing ribs (4), a first embedded part (8) is arranged on the outer side of the first protective structure (2), and the second protective structure (3) is located at the lower end of the slope (, and the second protective structure (3) is composed of supporting piles (9), soil retaining plates (10) and backfill layers (11), the supporting piles (9) are located on the outer side of the slope (1), the soil retaining plates (10) are located between the slope (1) and the supporting piles (9), the soil retaining plates (10) are fixed on the supporting piles (9) through screws, the backfill layers (11) are located between the soil retaining plates (10) and the slope (1), second embedded parts (12) are arranged at the upper end of the second protective structure (3), and the second embedded parts (12) are fixedly connected with the first embedded parts (8) through first pull rods (13).

2. A deep foundation pit supporting device according to claim 1, wherein: the slope (1) is provided with a layer of steps, and a drainage ditch is arranged at the outer side of the lower end of the slope (1) which is positioned on the support pile (9).

3. A deep foundation pit supporting device according to claim 1, wherein: be equipped with stand (14) on the step of putting slope (1), stand (14) are located the root of first protective structure (2), stand (14) are equipped with the toper kicking block towards one side of first protective structure (2), and stand (14) lower extreme is equipped with second pull rod (15) that are used for fixed fender pile (9).

4. A deep foundation pit supporting device according to claim 1, wherein: a sprayed concrete layer is arranged outside the first protective structure (2), and the thickness part of the sprayed concrete layer is smaller than 5 cm.

5. A deep foundation pit supporting device according to claim 1, wherein: and a reinforced cement plate (16) for fixing the second pull rod (15) is arranged on the outer side of the support pile (9), and the support pile (9) is at least 50cm higher than the step.

6. A deep foundation pit supporting device according to claim 1, wherein: the first pull rod (13) is composed of a turn buckle and connecting rods, and the connecting rods are symmetrically arranged at two ends of the turn buckle.