CN109914424B

CN109914424B - Deep foundation pit supporting structure

Info

Publication number: CN109914424B
Application number: CN201910224611.7A
Authority: CN
Inventors: 李立明; 章丹凤; 许凤亚
Original assignee: Zhejiang Jinghua Construction Co ltd
Current assignee: Zhejiang Jinghua Construction Co ltd
Priority date: 2019-03-23
Filing date: 2019-03-23
Publication date: 2020-10-30
Anticipated expiration: 2039-03-23
Also published as: CN109914424A

Abstract

The invention discloses a deep foundation pit supporting structure, relates to the technical field of foundation pit supporting, and solves the problem that an existing supporting structure cannot support a foundation pit with an irregular shape surrounded by a side wall. Technical scheme is a deep basal pit bearing structure, including setting up the barricade at the foundation ditch lateral wall, carry out the bracing piece that supports to the barricade, and carry out the stand that supports to the bracing piece, the lower extreme of stand and barricade all inserts in soil, support through the bracing piece between the adjacent stand, also support through the bracing piece between the stand that corresponds and the barricade, the coaxial fixedly connected with diameter in upper end of stand is less than its gag lever post, the bracing piece is used for the one end fixedly connected with connecting piece of support post, the one side of connecting piece bracing piece dorsad is the arc and laminates on the lateral wall of stand, go back fixedly connected with limiting plate on the butt piece, be provided with spacing hole on the limiting plate, the gag lever post passes. The invention has reasonable structure and can support the foundation pit with irregular shape surrounded by the side wall.

Description

Deep foundation pit supporting structure

Technical Field

The invention relates to the technical field of foundation pit supporting, in particular to a deep foundation pit supporting structure.

Background

The foundation pit is a soil pit excavated at a foundation design position according to the base elevation and the base plane size, and the deep foundation pit is an engineering with the excavation depth exceeding 5 meters (including 5 meters) or the excavation depth not exceeding 5 meters, but particularly complicated geological conditions, surrounding environments and underground pipelines. And the lateral wall of the foundation pit is very easy to collapse, so that the lateral wall of the foundation pit is provided with the baffle, and then the support structure is arranged to support the baffle.

For example, patent No. CN205134331U discloses a supporting structure for excavation of a foundation pit, which includes a first fender post and a second fender post respectively disposed on two opposite sidewalls of the foundation pit; the first crown beam is arranged at the top of the first fender pile; the second crown beam is arranged at the top of the second fender post; excavating a first soil body and a second soil body formed in the lower area of the foundation pit; the first soil body clings to the side wall of the first fender post; the second soil body clings to the side wall of the second fender post; the first steel support and the second steel support are transversely arranged between two opposite side walls of the foundation pit; and the first steel support and the second steel support are both positioned in the upper area of the foundation pit.

Like above-mentioned bearing structure, current foundation ditch bearing structure adopts the bracing piece structure of simple mostly in order to support the baffle of foundation ditch both sides, however, this kind of bearing structure has certain limitation, only is applicable to the less foundation ditch of width to, the foundation ditch is not necessarily the rectangle of rule, if the foundation ditch lateral wall encloses into anomalous shape, the bracing piece is difficult for both ends atress to support in order to the baffle of foundation ditch lateral wall.

Disclosure of Invention

The invention aims to provide a deep foundation pit supporting structure which can be suitable for a foundation pit with an irregular shape surrounded by side walls.

The technical purpose of the invention is realized by the following technical scheme: a deep foundation pit supporting structure comprises a retaining wall arranged on the side wall of a foundation pit, a supporting rod for supporting the retaining wall and an upright post for supporting the supporting rod, the lower ends of the upright post and the retaining wall are inserted into soil, the upright post is vertically arranged, the cross section of the upright post is circular, the supporting rods are horizontally arranged, the adjacent upright posts are supported by the supporting rods, the corresponding upright post and the retaining wall are also supported by the supporting rod, the upper end of the upright post is coaxially and fixedly connected with a limiting rod with the diameter smaller than that of the upright post, one end of the support bar for supporting the upright post is fixedly connected with a connecting piece, one surface of the connecting piece back to the support bar is arc-shaped and is attached to the side wall of the upright post, the connecting piece is further fixedly connected with a limiting plate, a limiting hole is formed in the limiting plate, and the limiting rod penetrates through the limiting hole.

Through adopting above-mentioned scheme, block all around the foundation ditch by the barricade, avoid soil to collapse into in the foundation ditch, rethread bracing piece props the barricade in order to prevent that the barricade from being overturned, because the lower extreme of barricade inserts in soil, thereby the bracing piece only need to support the upper end of barricade can, it props the bracing piece to set up the stand again, prevent the bracing piece landing, the tip at the bracing piece sets up the connecting piece, the stand is the cylinder, and the connecting piece pastes and is the arc in the stand one side, make bracing piece and connecting piece can rotate around the stand with the adjustment position, thereby adapt to the foundation ditch that the lateral wall encloses into irregular shape, and link to each other through the bracing piece between the adjacent stand and support, make and consolidate each other between the stand, thereby.

The invention is further configured to: the outer wall of the upright post is also fixedly connected with a circle of supporting table arranged along the circumferential direction of the upright post, and the lower side of the connecting piece is supported on the supporting table.

Through adopting above-mentioned scheme, the stand is propped through the bracing piece in order to hold the stand through the effect of limiting plate and gag lever post between the stand for relative position between the stand is difficult for taking place to change, sets up the supporting bench and supports the connecting piece of bracing piece tip on the stand, avoids the limiting plate to receive the action of gravity of bracing piece and takes place to warp.

The invention is further configured to: and a bolt transversely penetrates through the limiting rod and is positioned above the limiting plate.

Through adopting above-mentioned scheme, cross the bolt on the gag lever post, the bolt is located the top of limiting plate, carries on spacingly to the limiting plate through the bolt, avoids the limiting plate accident to break away from with the gag lever post.

The invention is further configured to: still be provided with the insection that the round set up along its circumference on the upper end outer wall of stand, it is provided with the tooth's socket to correspond on the arcwall face of connecting piece, tooth on the stand inlays and establishes in the tooth's socket.

Through adopting above-mentioned scheme, the arcwall face laminating of connecting piece is on the lateral wall of stand, though can make the convenient adjustment of the support direction of bracing piece, but when the skew takes place for the support atress direction of bracing piece, connecting piece and bracing piece also easy atress and take place to rotate around the stand and can't normally support, so set up the insection on the stand, set up the tooth's socket on the connecting piece for difficult atress and around the stand emergence rotation after the position of connecting piece and bracing piece is confirmed.

The invention is further configured to: and reinforcing ribs arranged along the axial direction of the supporting rod and reinforcing rings arranged along the circumferential direction of the supporting rod are distributed on the outer wall of the supporting rod.

Through adopting above-mentioned scheme, set up strengthening rib and beaded finish in order to strengthen the support capacity of bracing piece on the outer wall of bracing piece for the bracing piece non-deformable.

The invention is further configured to: the connecting piece with accompany the gasket between the bracing piece, wear to be equipped with connecting bolt on the connecting piece, connecting bolt wears to penetrate the gasket with beaded finish and threaded connection have stop nut.

Through adopting above-mentioned scheme, set up the gasket between connecting piece and bracing piece, through the quantity that changes the gasket, can adjust the interval between connecting piece and the bracing piece for the whole length that supports of bracing piece can be adjusted as the condition.

The invention is further configured to: the connecting piece is further provided with a protruding square block, the end part of the supporting rod is correspondingly provided with a square hole, and the protruding square block penetrates through the gasket and is embedded in the square hole.

Through adopting above-mentioned scheme, set up the protrusion square on the connecting piece, set up the square hole that corresponds at the tip of bracing piece, the protrusion square inlays and establishes in the square hole to strengthen the joint strength between connecting piece and the bracing piece, reduce the influence that the gravity of bracing piece is connected to the connecting piece, make the connecting piece connect more firmly after on the bracing piece.

The invention is further configured to: the retaining wall is composed of a plurality of channel steel, two side edges of the channel steel are turned outwards and folded back to form barb-shaped folding edges, the channel steel is divided into two parts facing to the opposite direction, and the two parts are sequentially arranged at intervals and are hooked with the folding edges.

By adopting the scheme, the retaining wall is spliced by the channel steel, so that the retaining wall is convenient to store and adjust the length as required, and the lower end of the retaining wall is convenient to insert into soil.

The invention is further configured to: the bracing piece is used for the butt fixedly connected with butt piece is still gone up to the one end of barricade, also be provided with the protrusion square on the butt piece and inlay and establish in the square hole of bracing piece tip, fixing bolt still wears to be equipped with on the butt piece, fixing bolt passes beaded finish and threaded connection have fixation nut, the butt piece dorsad one side of bracing piece is provided with the caulking groove, the embedded pin that is equipped with of caulking groove, the pin part inlays to be established the inslot of channel-section steel, just be provided with the draw-in groove of following its axial setting on the both sides wall of pin, be provided with the card arris in the caulking groove, the card arris inlays to be established in the draw-in groove.

Through adopting above-mentioned scheme, be used for the one end of butt barricade to connect the butt piece at the bracing piece to set up the pin and inlay in the inslot of channel-section steel, the lower extreme of pin inserts in soil, and set up the draw-in groove in the both sides of pin, set up the card arris in the caulking groove on the butt piece, the pin can prevent that the barricade from taking place the skew, and the butt piece blocks the pin again, thereby conveniently supports the barricade.

In conclusion, the invention has the following beneficial effects: the irregular foundation pit surrounded by the side walls can be supported.

Drawings

FIG. 1 is a schematic view of the overall structure of the embodiment;

FIG. 2 is an enlarged view of portion A of FIG. 1;

fig. 3 is an enlarged view of a portion B in fig. 1.

Reference numerals: 1. retaining walls; 2. a support bar; 3. a column; 4. a limiting rod; 5. a connecting member; 6. a limiting plate; 7. a limiting hole; 8. a support table; 9. a bolt; 10. a tooth socket; 11. reinforcing ribs; 12. a reinforcement ring; 13. a gasket; 14. a connecting bolt; 15. a limit nut; 16. a protruding square block; 17. a square hole; 18. channel steel; 19. an abutting member; 20. fixing the bolt; 21. fixing a nut; 22. caulking grooves; 23. a stop lever; 24. a card slot; 25. and (6) clamping edges.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Combine fig. 1 and fig. 3 to show, a deep basal pit bearing structure, including enclosing barricade 1 at the foundation ditch perisporium, barricade 1's lower extreme inserts in soil in order to block foundation ditch earth all around, barricade 1 is formed by piecing together a plurality of channel-section steels 18, and the both sides limit inflection that turns up of channel-section steel 18 is formed with barb-like hem, and channel-section steel 18 divide into towards opposite two parts, in the notch of some channel-section steels 18 moves towards the foundation ditch, another part moves towards the foundation ditch outward, consecutive interval arrangement between two parts channel-section steels 18 links up through the hem to constitute a whole face barricade 1.

Still be provided with the bracing piece 2 that supports to barricade 1 in the foundation ditch and to the stand 3 that supports to bracing piece 2, stand 3 is the cylinder of vertical setting, and 2 levels of bracing piece set up, and bracing piece 2 divide into two parts, and partly are held and are supported between adjacent stand 3, and another part supports between stand 3 and barricade 1.

The outer wall of the support rod 2 is provided with a plurality of reinforcing ribs 11 arranged along the axial direction of the support rod and reinforcing rings 12 arranged along the circumferential direction of the support rod, the reinforcing ribs 11 are distributed along the circumferential direction of the outer wall of the support rod 2 at intervals, and the reinforcing rings 12 are distributed along the axial direction of the support rod 2 at intervals.

Bracing piece 2 is used for the connecting piece 5 that the one end fixed connection of support post 3 had, the coaxial fixedly connected with diameter in upper end of stand 3 is less than its gag lever post 4, the one side of connecting piece 5 bracing piece 2 dorsad is the arc and laminates on the outer wall of stand 3, the upper end outer wall of stand 3 is provided with the insection that the round set up along its circumference, it is provided with tooth's socket 10 (not shown in the figure) to correspond on the connecting piece 5, tooth on the stand 3 inlays in the tooth's socket 10 of establishing on connecting piece 5 when connecting piece 5 butt is on stand 3. Go back fixedly connected with limiting plate 6 on connecting piece 5, be provided with spacing hole 7 on the limiting plate 6, gag lever post 4 passes from spacing hole 7, and still be provided with the brace table 8 that the round set up along its circumference on the outer wall of stand 3, connecting piece 5 supports on brace table 8, because stacking up each other of limiting plate 6, connecting piece 5 can't directly support on brace table 8 a bit, so set up the backing plate between connecting piece 5 and brace table 8 and support, it has bolt 9 still transversely to run through on gag lever post 4, bolt 9 is located limiting plate 6's top, make limiting plate 6 be difficult for breaking away from on gag lever post 4.

Still accompany gasket 13 between connecting piece 5 and the bracing piece 2, wear to be equipped with connecting bolt 14 on the connecting piece 5, connecting bolt 14 wears to penetrate gasket 13 and beaded finish 12 and threaded connection has stop nut 15 to fix connecting piece 5 on bracing piece 2, can also adjust the whole support length of bracing piece 2 through the quantity that changes gasket 13.

In order to make the connection between the connecting member 5 and the supporting rod 2 more firm, a protruding square block 16 (not shown) is further disposed on the connecting member 5, a square hole 17 (not shown) is correspondingly disposed at the end of the supporting rod 2, and the protruding square block 16 is embedded in the square hole 17, so that the connection between the connecting member 5 and the supporting rod 2 is more firm.

Referring to fig. 1 and 2, one end of the support rod 2, which is used for abutting against the retaining wall 1, is further fixedly connected with an abutting piece 19, the abutting piece 19 is also provided with a protruding square block 16 and is embedded in a square hole 17 at the end of the support rod 2, a fixing bolt 20 penetrates through the abutting piece 19, the fixing bolt 20 penetrates through the reinforcing ring 12 and is in threaded connection with a fixing nut 21, one side of the abutting piece 19, which is opposite to the support rod 2, is provided with an embedded groove 22, a stop rod 23 is embedded in the embedded groove 22, part of the stop rod 23 is embedded in a channel steel 18 of the retaining wall 1, two side walls of the stop rod 23 are provided with clamping grooves 24 which are axially arranged along the axial direction, clamping edges 25 are arranged in the embedded groove 22 on the abutting piece 19, and.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. The utility model provides a deep basal pit bearing structure which characterized in that: comprises a retaining wall (1) arranged on the side wall of a foundation pit, a support rod (2) for supporting the retaining wall (1) and a stand column (3) for supporting the support rod (2), wherein the stand column (3) and the lower end of the retaining wall (1) are all inserted into soil, the stand column (3) is vertically arranged, the cross section of the stand column (3) is circular, the support rod (2) is horizontally arranged, the stand column (3) is adjacent to the stand column (3) and is supported by the support rod (2), the stand column (3) and the retaining wall (1) are correspondingly supported by the support rod (2), a limit rod (4) with the diameter smaller than that of the upper end of the stand column (3) is coaxially and fixedly connected with the support rod (2), the support rod (2) is used for supporting one end of the stand column (3) and is fixedly connected with a connecting piece (5), one surface of the support rod (2) is in an arc shape and is attached, go back fixedly connected with limiting plate (6) on connecting piece (5), be provided with spacing hole (7) on limiting plate (6), gag lever post (4) certainly pass in spacing hole (7), still be provided with the insection that the round set up along its circumference on the upper end outer wall of stand (3), it is provided with tooth's socket (10) to correspond on the arcwall face of connecting piece (5), tooth on stand (3) is inlayed and is established in tooth's socket (10).

2. The deep foundation pit supporting structure of claim 1, wherein: the outer wall of the upright post (3) is further fixedly connected with a supporting table (8) which is circumferentially arranged in a circle, and the lower side of the connecting piece (5) is supported on the supporting table (8).

3. The deep foundation pit supporting structure of claim 1, wherein: and a bolt (9) transversely penetrates through the limiting rod (4), and the bolt (9) is positioned above the limiting plate (6).

4. The deep foundation pit supporting structure of claim 1, wherein: the outer wall of the support rod (2) is distributed with a reinforcing rib (11) arranged along the axial direction and a reinforcing ring (12) arranged along the circumferential direction.

5. The deep foundation pit support structure of claim 4, wherein: connecting piece (5) with accompany gasket (13) between bracing piece (2), wear to be equipped with connecting bolt (14) on connecting piece (5), connecting bolt (14) wear to penetrate gasket (13) with beaded finish (12) and threaded connection have stop nut (15).

6. The deep foundation pit supporting structure of claim 5, wherein: still be provided with protruding square (16) on connecting piece (5), the tip correspondence of bracing piece (2) is provided with square hole (17), protruding square (16) pass gasket (13) and inlay and establish in square hole (17).

7. The deep foundation pit support structure of claim 6, wherein: barricade (1) comprises a plurality of channel-section steels (18), just the both sides limit of channel-section steel (18) turns up the inflection and is formed with barb-like hem, just channel-section steel (18) divide into towards opposite two parts, two parts interval arrangement in proper order and pass through between channel-section steel (18) the hem links up with.

8. The deep foundation pit support structure of claim 7, wherein: one end of the supporting rod (2) used for being abutted against the retaining wall (1) is also fixedly connected with an abutting piece (19), the abutting piece (19) is also provided with a convex block (16) which is embedded in a square hole (17) at the end part of the supporting rod (2), a fixing bolt (20) is further arranged on the abutting piece (19) in a penetrating mode, the fixing bolt (20) penetrates through the reinforcing ring (12) and is connected with a fixing nut (21) in a threaded mode, one side of the abutting part (19) back to the supporting rod (2) is provided with a caulking groove (22), a stop lever (23) is embedded in the embedding groove (22), the stop lever (23) is partially embedded in the groove of the channel steel (18), and the two side walls of the stop lever (23) are provided with clamping grooves (24) arranged along the axial direction thereof, a clamping rib (25) is arranged in the embedding groove (22), and the clamping rib (25) is embedded in the clamping groove (24).