CN212865956U

CN212865956U - Inner supporting structure for foundation pit

Info

Publication number: CN212865956U
Application number: CN202021528393.0U
Authority: CN
Inventors: 陈铭; 罗东梅; 陶海生; 杨燕芳; 杨静妮; 欧阳可立
Original assignee: Huizhou Urban And Rural Construction Engineering Co ltd
Current assignee: Huizhou Urban And Rural Construction Engineering Co ltd
Priority date: 2020-07-28
Filing date: 2020-07-28
Publication date: 2021-04-02
Anticipated expiration: 2030-07-28

Abstract

The application relates to the field of foundation pit protection, in particular to an inner supporting structure of a foundation pit, which comprises a plurality of first transverse baffles for supporting the inner wall of the foundation pit in the length direction and a plurality of second transverse baffles for supporting the inner wall of the foundation pit in the width direction, wherein the first transverse baffles and the second transverse baffles are arranged in the vertical direction; one side of the second transverse baffle far away from the inner wall of the foundation pit is provided with a second vertical plate, the side wall of the second vertical plate is abutted against the side wall of the second transverse baffle, and a second supporting rod used for supporting the second transverse baffle is arranged between the first supporting rod and the second vertical plate. This application has increased staff's installation foundation ditch inner support structure's convenience.

Description

Inner supporting structure for foundation pit

Technical Field

The application relates to the field of foundation pit protection, in particular to an inner supporting structure of a foundation pit.

Background

At present, a foundation pit is an earth pit excavated at a foundation design position according to the base elevation and the base plane size. Before excavation, an excavation scheme is determined according to geological and hydrological data and the conditions of buildings nearby the site, and waterproof drainage work is performed. The persons with low excavation depth can use the method of putting side slope to make the earth slope stable, and the size of the slope is determined according to the relevant construction project. When a deeper foundation pit and a building adjacent to the deeper foundation pit are excavated, a foundation pit wall supporting method, a concrete-sprayed wall protecting method and a large foundation pit are used, and even an underground continuous wall and a columnar column type bored pile are used for interlocking, so that an outer soil layer is prevented from collapsing; for those who have no influence on nearby buildings, the underground water level can be reduced by a well point method, and slope releasing open cut is adopted; in cold areas, natural cold air freezing method can be adopted for excavation and the like.

In the related art, the chinese patent with publication number CN208763024U discloses an inner supporting structure of a foundation pit, wherein the supporting structure is arranged in the foundation pit and comprises a cast-in-situ bored pile, lattice columns arranged in the cast-in-situ bored pile, supporting piles attached to the wall of the foundation pit, supporting plate strips arranged on the supporting piles at intervals, a first horizontal inner support, a second horizontal inner support, angle braces and a protective surface layer, the first horizontal inner support and the second horizontal inner support are arranged between two adjacent lattice columns at intervals in parallel, and the top surface of the first horizontal inner support is flush with the top surfaces of the lattice columns; the corner supports are arranged at four corners of the foundation pit; the first horizontal inner support comprises a plurality of first main beams arranged in parallel and first connecting beams arranged between the first main beams, and a triangular support area is formed between the first main beams and the first connecting beams; the second horizontal inner support comprises a plurality of second main beams arranged in parallel and second connecting beams arranged between the second main beams, and a triangular support area is formed between the second main beams and the second connecting beams; the protective layer is laid on the top of the cast-in-situ bored pile and the pit rear slope surface of the foundation pit.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: the foundation pit inner supporting structure comprises a cast-in-situ bored pile, lattice columns arranged in the cast-in-situ bored pile, supporting piles attached to the wall of the foundation pit, palm plate belts arranged on the supporting piles at intervals, a first horizontal inner support, a second horizontal inner support, corner supports and a protective surface layer. The structure of the foundation pit inner supporting structure is complex, and time and labor are wasted in the installation process.

SUMMERY OF THE UTILITY MODEL

In order to increase the convenience of staff installation foundation ditch inner support structure, this application provides a foundation ditch inner support structure.

The application provides a foundation ditch inner support structure adopts following technical scheme:

an inner supporting structure of a foundation pit comprises a plurality of first transverse baffles for supporting the inner wall of the foundation pit in the length direction and a plurality of second transverse baffles for supporting the inner wall of the foundation pit in the width direction, wherein the first transverse baffles and the second transverse baffles are arranged in the vertical direction; one side of the second transverse baffle far away from the inner wall of the foundation pit is provided with a second vertical plate, the side wall of the second vertical plate is abutted against the side wall of the second transverse baffle, and a second supporting rod used for supporting the second transverse baffle is arranged between the first supporting rod and the second vertical plate.

By adopting the technical scheme, the two first vertical plates have a supporting effect through the two ends of the first supporting rod, and the first vertical plates have supporting force towards the inner wall of the foundation pit for the plurality of first transverse baffles, so that the plurality of first transverse baffles support the side wall of the foundation pit in the length direction; the second vertical plate is supported through the second supporting rod, and the second vertical plate has a supporting force towards the inner wall of the foundation pit to the plurality of second transverse baffles, so that the plurality of second transverse baffles support the side wall of the foundation pit in the width direction, and compared with the background technology, the convenience for installing the foundation pit supporting structure by workers is improved.

Preferably, four angles of foundation ditch are all fixed and are provided with the locating piece, the locating piece includes fixed connection's first location portion and second location portion, first constant head tank has been seted up to one side that first location portion is close to the foundation ditch inner wall, the tip of first horizontal baffle with first constant head tank joint cooperation, second constant head tank has been seted up to one side that second location portion is close to the foundation ditch inner wall, the tip of second horizontal baffle with second constant head tank joint cooperation.

By adopting the technical scheme, the first positioning groove increases the convenience of installing the first transverse baffle by workers, has a positioning effect on the first transverse baffle, and can limit the first transverse baffle from being far away from the side wall of the foundation pit in the length direction; the second constant head tank has increased the convenience that the staff installed the second horizontal baffle, has the positioning action to the second horizontal baffle, and second location portion can restrict the lateral wall that the foundation ditch length direction was kept away from to the second horizontal baffle.

Preferably, first clamping grooves are formed in one sides, away from the inner wall of the foundation pit, of the first transverse baffles, and the first vertical plates are in clamping fit with the first clamping grooves; a second joint groove is formed in one side, far away from the inner wall of the foundation pit, of the second transverse baffle plates, and the second vertical plate is matched with the second joint groove in a clamped mode.

By adopting the technical scheme, the first clamping groove has a positioning function on the first vertical plate, and the first vertical plate is limited from sliding along the transverse direction; the second joint groove has the positioning action to the second riser, has restricted the second riser to slide along the transverse direction, has increased the convenience of staff installation first riser and second riser.

Preferably, a first mounting groove is formed in one side, away from the first transverse baffle, of the first vertical plate, the end portion of the first supporting rod is in clamping fit with the first mounting groove, and the first supporting rod is fixed to the first vertical plate through a fastener.

Through adopting above-mentioned technical scheme, first mounting groove has the positioning action to the tip of first bracing piece, has restricted first bracing piece and has slided along vertical direction, has increased the convenience that the staff installed first bracing piece simultaneously.

Preferably, the fastener is an angle steel, the angle steel includes a first angle edge and a second angle edge which are perpendicular to each other, the first angle edge is fixedly connected with the second angle edge, the first angle edge is fixed on the side wall of the first supporting rod through a first bolt, and the second angle edge is fixed on the bottom of the first mounting groove through a second bolt.

Through adopting above-mentioned technical scheme, on being fixed in first bracing piece with first angle limit through first bolt, be fixed in the tank bottom of first mounting groove with the second angle limit through the second bolt to link together first bracing piece and first riser, increased the fastness of first bracing piece and first riser installation simultaneously.

Preferably, every inner wall of foundation ditch width direction all is provided with two risers, the second riser is kept away from the second mounting groove has been seted up to one side of second horizontal baffle, two connect through the connecting plate between the second riser, the connecting plate simultaneously with two the cooperation of second mounting groove joint.

Through adopting above-mentioned technical scheme, the second mounting groove has a limiting action to the connecting plate, can restrict the connecting plate and slide along vertical direction.

Preferably, the first supporting rod is close to the side wall of the connecting plate and is provided with a first supporting groove, the connecting plate is close to the side wall of the first supporting rod and is provided with a second supporting groove, one end of the second supporting rod close to the first supporting rod is matched with the first supporting groove in a clamping mode, and one end of the second supporting rod close to the connecting plate is matched with the second supporting groove in a clamping mode.

Through adopting above-mentioned technical scheme, the second riser has the holding power towards the foundation ditch inner wall to a plurality of second horizontal baffle to make a plurality of second horizontal baffle support foundation ditch width direction's lateral wall.

Preferably, the degree of depth in first bracing groove is less than the thickness of first bracing piece, the degree of depth in second bracing groove is less than the thickness of connecting plate, the second bracing piece is close to the lower surface butt of first bracing piece one end in the tank bottom of first bracing groove, the second bracing piece is close to the lower surface butt of connecting plate one end in the tank bottom of second bracing groove.

Through adopting above-mentioned technical scheme, the tank bottom in first bracing groove and the tank bottom in second bracing groove are to the ascending supporting role of second bracing piece, and the restriction second bracing piece slides downwards under the effect of gravity, has increased the fastness of second bracing piece installation.

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

1. the two first vertical plates have a supporting effect through two ends of the first supporting rod, and the first vertical plates have supporting force towards the inner wall of the foundation pit for the plurality of first transverse baffles, so that the plurality of first transverse baffles support the side wall of the foundation pit in the length direction; the second vertical plate is supported through the second supporting rod, and the second vertical plate has supporting force towards the inner wall of the foundation pit for the plurality of second transverse baffles, so that the plurality of second transverse baffles support the side wall in the width direction of the foundation pit, and compared with the background technology, the convenience of installing the foundation pit supporting structure by workers is improved;

2. the second supporting rods have a supporting effect on the connecting plates, the connecting plates have a powerful effect on the second vertical plates, and the second vertical plates have supporting force towards the inner wall of the foundation pit for the plurality of second transverse baffles so that the plurality of second transverse baffles support the side wall of the foundation pit in the width direction;

3. the tank bottom in first supporting groove and the tank bottom in second supporting groove have ascending supporting role to the second bracing piece, and the restriction second bracing piece slides downwards under the effect of gravity, has increased the fastness of second bracing piece installation.

Drawings

Fig. 1 is a schematic structural diagram of an inner support structure of a foundation pit according to an embodiment of the present application.

Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.

Description of reference numerals: 1. a first transverse baffle; 101. a first clamping groove; 2. a second transverse baffle; 201. a second clamping groove; 3. positioning blocks; 301. a first positioning portion; 3011. a first positioning groove; 302. a second positioning portion; 3021. a second positioning groove; 4. a third bolt; 5. a fourth bolt; 6. a first vertical plate; 601. a first mounting groove; 7. a first support bar; 701. a first support groove; 8. angle steel; 801. a first corner edge; 802. a second corner edge; 9. a first bolt; 10. a second bolt; 11. a second vertical plate; 111. a second mounting groove; 12. a connecting plate; 121. a second support groove; 13. a second support bar.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses bearing structure in foundation ditch. Referring to fig. 1, the supporting structure in the foundation pit comprises a plurality of first transverse baffle plates 1 for supporting the inner wall of the foundation pit in the length direction and a plurality of second transverse baffle plates 2 for supporting the inner wall of the foundation pit in the width direction, the first transverse baffle plates 1 and the second transverse baffle plates 2 are cuboid in shape, and the length directions of the first transverse baffle plates 1 and the second transverse baffle plates 2 are in the horizontal direction. In this embodiment, the number of the first transverse baffle and the second transverse baffle 2 is four, and four first transverse baffles 1 and four second transverse baffles 2 are arranged along the vertical direction.

Continuing to refer to fig. 1, positioning blocks 3 are fixedly disposed at four corners of the foundation pit, each positioning block 3 includes a first positioning portion 301 and a second positioning portion 302 which are integrally formed, the first positioning portion 301 and the second positioning portion 302 are perpendicular to each other, and the first positioning portion 301 and the second positioning portion 302 are both rectangular solids. First locating portion 301 is fixed in foundation ditch length direction's lateral wall through four third bolts 4, and four third bolts 4 all pass first locating portion 301 and foundation ditch length direction's lateral wall threaded connection, are fixed in foundation ditch length direction's lateral wall with first locating portion 301. The second positioning portion 302 is fixed to the side wall of the foundation pit in the width direction through four fourth bolts 5, and the four fourth bolts 5 penetrate through the second positioning portion 302 and are in threaded connection with the side wall of the foundation pit in the width direction, so that the second positioning portion 302 is fixed to the side wall of the foundation pit in the width direction. First locating portion 301 is close to one side of foundation ditch inner wall and has seted up first locating slot 3011, and the end both ends of first horizontal baffle 1 cooperate with two first locating slots 3011 joint respectively. Second constant head tank 3021 has been seted up to one side that second location portion 302 is close to the foundation ditch inner wall, and the both ends of second horizontal baffle 2 cooperate with two second constant head tanks 3021 joint respectively. With the arrangement, the first positioning groove 3011 increases the convenience of installing the first transverse baffle 1 by workers, has a positioning effect on the first transverse baffle 1, and the first positioning portion 301 can limit the side wall of the first transverse baffle 1 away from the length direction of the foundation pit; second constant head tank 3021 has increased the convenience that the staff installed second crosspiece 2, has the positioning action to second crosspiece 2, and second location portion 302 can restrict second crosspiece 2 and keep away from foundation ditch length direction's lateral wall.

Continuing to refer to fig. 1, one side of first horizontal baffle 1, which is far away from the inner wall of the foundation pit, is provided with two first risers 6, the shape of first riser 6 is a cuboid, and the length direction of first riser 6 is vertical. Every first horizontal baffle 1 keeps away from one side of foundation ditch inner wall and has all seted up two first joint grooves 101, and two first joint grooves 101 are arranged along the length direction of first horizontal baffle 1. The two first vertical plates 6 are respectively matched with the two first clamping grooves 101 in a clamping manner. Two first mounting grooves 601 are seted up to one side that first riser 6 kept away from first horizontal baffle 1, and two first mounting grooves 601 are arranged along the length square of first riser 6. A first supporting rod 7 used for supporting the two first vertical plates 6 is fixedly arranged between the two first vertical plates 6 positioned on the opposite inner wall of the foundation pit. The number of the first supporting rods 7 is four, two pairs of the first supporting rods 7 are used for supporting two first vertical plates 6, two ends of each first supporting rod 7 are respectively matched with the two first mounting grooves 601 in a clamping mode, and the first supporting rods 7 are fixed with the first vertical plates 6 through fasteners. So set up, first mounting groove 601 has the positioning action to the tip of first bracing piece 7, has restricted first bracing piece 7 and has slided along vertical direction, has increased the convenience of the first bracing piece 7 of staff's installation simultaneously.

Referring to fig. 1 and 2, in the present embodiment, the fastening member is an angle iron 8, the angle iron 8 includes a first corner edge 801 and a second corner edge 802 that are perpendicular to each other, the first corner edge 801 and the second corner edge 802 are integrally formed, the first corner edge 801 is fixed to the side wall of the first support bar 7 by a first bolt 9, and the first bolt 9 penetrates through the first corner edge 801 to be screwed with the side wall of the first support bar 7, so as to fix the first corner edge 801 to the side wall of the first support bar 7. The second corner 802 is fixed to the bottom of the first mounting groove 601 by a second bolt 10, and the second bolt 10 passes through the second corner 802 and is in threaded connection with the first vertical plate 6, so that the second corner 802 is fixed to the first vertical plate 6. So set up, angle steel 8 is fixed in two first mounting grooves 601 respectively with the both ends of first bracing piece 7 to with firm the installing in between two first risers 6 of first bracing piece 7.

Referring to fig. 1, one side of the second transverse baffle 2, which is far away from the inner wall of the foundation pit, is provided with a second vertical plate 11, the second vertical plate 11 is cuboid in shape, and the length direction of the second vertical plate 11 is in the vertical direction. Two second joint grooves 201 are seted up to one side that the foundation ditch inner wall was kept away from to second horizontal baffle 2, and two second joint grooves 201 are arranged along the length direction of second horizontal baffle 2. The two second vertical plates 11 are respectively matched with the two second clamping grooves 201 in a clamping manner. Two second mounting grooves 111 have all been seted up to one side that second horizontal baffle 2 was kept away from to every second riser 11, and two second mounting grooves 111 are arranged along the length square of second riser 11. Connect through connecting plate 12 between two second risers 11, connecting plate 12's shape is the cuboid, and connecting plate 12's length direction is the horizontal direction, and connecting plate 12 cooperates with two second mounting grooves 111 joint simultaneously. So set up, second mounting groove 111 has a limiting effect to connecting plate 12, can restrict connecting plate 12 and slide along vertical direction.

With continued reference to fig. 1, a second support bar 13 for supporting the second cross bar 2 is disposed between the first support bar 7 and the second riser 11. Specifically, a first supporting groove 701 is formed in the side wall, close to the connecting plate 12, of the first supporting rod 7, and the depth of the first supporting groove 701 is smaller than the thickness of the first supporting rod 7. The connecting plate 12 is provided with a second supporting groove 121 on the side wall near the first supporting rod 7, and the depth of the second supporting groove 121 is smaller than the thickness of the connecting plate 12. One end of the second support bar 13 close to the first support bar 7 is in clamping fit with the first support groove 701, one end of the second support bar 13 close to the connecting plate 12 is in clamping fit with the second support groove 121, the lower surface of one end of the second support bar 13 close to the first support bar 7 abuts against the groove bottom of the first support groove 701, and the lower surface of one end of the second support bar 13 close to the connecting plate 12 abuts against the groove bottom of the second support groove 121. With the arrangement, the second vertical plate 11 has supporting force towards the inner wall of the foundation pit for the four second transverse baffles 2, so that the plurality of second transverse baffles 2 support the side wall of the foundation pit in the width direction; the groove bottoms of the first supporting groove 701 and the second supporting groove 121 have an upward supporting effect on the second supporting rod 13, so that the second supporting rod 13 is limited to slide downwards under the action of gravity, and the installation firmness of the second supporting rod 13 is improved.

The implementation principle of the foundation pit inner supporting structure in the embodiment of the application is as follows: fixing the first positioning part 301 on the side wall of the length direction of the foundation pit by four third bolts 4, fixing the second positioning part 302 on the side wall of the width direction of the foundation pit by four fourth bolts 5, after all the positioning blocks 3 are installed, respectively clamping and matching the two ends of the first transverse baffle 1 with the two first positioning grooves 3011, respectively clamping and matching the two ends of the second transverse baffle 2 with the two second positioning grooves 3021, after all the first transverse baffle 1 and all the second transverse baffle 2 are installed, respectively clamping and matching the first vertical plate 6 with the first clamping groove 101, after all the first vertical plates 6 are installed, respectively clamping and matching the two ends of the first supporting rod 7 with the two first mounting grooves 601, fixing the first corner on the first supporting rod 7 by the first bolts 9, fixing the first corner 801 on the first supporting rod 7 by the first bolts 9, fixing the second corner 802 on the bottom of the first mounting groove 601 by the second bolts 10, thereby realizing the fixation of the first support rod 7; then make second riser 11 and the cooperation of second joint groove 201 joint, then make the one end and the cooperation of first supporting groove 701 joint that connecting plate 12 is close to first supporting plate, make the one end and the cooperation of second supporting groove 121 joint that connecting plate 12 is close to connecting plate 12 to accomplish the installation to whole foundation ditch inner support structure, compare in background art, increased staff's installation foundation ditch inner support structure's convenience.

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. The utility model provides a bearing structure in foundation ditch which characterized in that: the supporting device comprises a plurality of first transverse baffles (1) for supporting the inner wall of a foundation pit in the length direction and a plurality of second transverse baffles (2) for supporting the inner wall of the foundation pit in the width direction, wherein the first transverse baffles (1) and the second transverse baffles (2) are arranged in the vertical direction, one side, away from the inner wall of the foundation pit, of each first transverse baffle (1) is provided with a first vertical plate (6), the side wall of each first vertical plate (6) abuts against the side wall of each first transverse baffle (1), and a first supporting rod (7) for supporting the two first vertical plates (6) is fixedly arranged between the two first vertical plates (6) on the inner wall, opposite to the foundation pit; one side of the second transverse baffle (2) far away from the inner wall of the foundation pit is provided with a second vertical plate (11), the side wall of the second vertical plate (11) is abutted to the side wall of the second transverse baffle (2), and a second support rod (13) used for supporting the second transverse baffle (2) is arranged between the first support rod (7) and the second vertical plate (11).

2. An excavation internal support structure as defined in claim 1, wherein: all four angles of foundation ditch are fixed and are provided with locating piece (3), locating piece (3) include fixed connection's first location portion (301) and second location portion (302), first constant head tank (3011) have been seted up to one side that first location portion (301) are close to the foundation ditch inner wall, the tip of first horizontal baffle (1) with first constant head tank (3011) joint cooperation, second constant head tank (3021) have been seted up to one side that second location portion (302) are close to the foundation ditch inner wall, the tip of second horizontal baffle (2) with second constant head tank (3021) joint cooperation.

3. An excavation internal support structure as defined in claim 1, wherein: one side, away from the inner wall of the foundation pit, of each of the first transverse baffles (1) is provided with a first clamping groove (101), and the first vertical plates (6) are clamped and matched with the first clamping grooves (101); a plurality of second horizontal baffle (2) keep away from one side of foundation ditch inner wall and have all seted up second joint groove (201), second riser (11) and a plurality of second joint groove (201) joint cooperation.

4. An excavation internal support structure as defined in claim 1, wherein: keep away from first riser (6) first mounting groove (601) have been seted up to one side of first horizontal baffle (1), the tip of first bracing piece (7) with first mounting groove (601) joint cooperation, first bracing piece (7) with first riser (6) are fixed through the fastener.

5. An excavation internal support structure according to claim 4, wherein: the fastener is angle steel (8), angle steel (8) include mutually perpendicular's first angle limit (801) and second angle limit (802), first angle limit (801) with second angle limit (802) fixed connection, first angle limit (801) are fixed in through first bolt (9) the lateral wall of first bracing piece (7), second angle limit (802) are fixed in through second bolt (10) the tank bottom of first mounting groove (601).

6. An excavation internal support structure as defined in claim 1, wherein: every inner wall of foundation ditch width direction all is provided with two second riser (11), second riser (11) are kept away from second transverse baffle (2) one side has been seted up second mounting groove (111), two connect through connecting plate (12) between second riser (11), connecting plate (12) simultaneously with two second mounting groove (111) joint cooperation.

7. An excavation internal support structure according to claim 6, wherein: first bracing piece (7) are close to first supporting groove (701) have been seted up to the lateral wall of connecting plate (12), connecting plate (12) are close to second supporting groove (121) have been seted up to the lateral wall of first bracing piece (7), second bracing piece (13) are close to the one end of first bracing piece (7) with first supporting groove (701) joint cooperation, second bracing piece (13) are close to the one end of connecting plate (12) with second supporting groove (121) joint cooperation.

8. An excavation internal support structure according to claim 7, wherein: the degree of depth of first bracing groove (701) is less than the thickness of first bracing piece (7), the degree of depth of second bracing groove (121) is less than the thickness of connecting plate (12), second bracing piece (13) are close to the lower surface butt of first bracing piece (7) one end in the tank bottom of first bracing groove (701), second bracing piece (13) are close to the lower surface butt of connecting plate (12) one end in the tank bottom of second bracing groove (121).