CN210482321U - Foundation pit support - Google Patents
Foundation pit support Download PDFInfo
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- CN210482321U CN210482321U CN201921357020.9U CN201921357020U CN210482321U CN 210482321 U CN210482321 U CN 210482321U CN 201921357020 U CN201921357020 U CN 201921357020U CN 210482321 U CN210482321 U CN 210482321U
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Abstract
The utility model relates to a foundation pit support, which comprises a stress plate, an inclined support rod and a support pile wedged at the bottom of the foundation pit, wherein the stress plate is propped against the side wall of the foundation pit, one end of the inclined support rod is hinged with the stress plate, and the other end of the inclined support rod is hinged with the support pile; the utility model discloses a construction method for inclined strut, including bracing piece, inclined tube, bracing piece, stress board, bracing pile, axis separation, the pipe chute sets up to two half structures along the axis separation, the week side that the pipe chute is close to the one end of bracing piece is articulated with the stress board, the one end of pipe chute is articulated with the support stake, the pipe chute sets up to the double-half structure along the axis separation, the tip that the week side that the pipe chute is close to the one end of bracing piece is close to the inclined tube for conical surface and conical surface is close to for the main aspects, the conical surface and the nut threaded connection of pipe chute have the effect that changes the length of bracing piece wantonly in order to satisfy different.
Description
Technical Field
The utility model relates to a construction technical field especially relates to a foundation ditch support.
Background
The foundation pit is a space below the ground excavated for constructing a foundation and a basement of a building (including a structure). The foundation pit belongs to temporary engineering and has the function of providing a space so that the basic masonry operation can be carried out according to the position specified by design.
The foundation pit inevitably causes deformation of surrounding soil bodies in the excavation process, influences underground pipelines of surrounding buildings, and seriously endangers the normal use and safety of the underground pipelines. In order to avoid this, a foundation pit supporting structure is provided in the design of the foundation pit and the excavation construction for stabilizing the safety of the foundation pit.
Chinese patent No. CN205712137U discloses a foundation pit supporting structure, which includes a stressed plate longitudinally disposed on the side wall of a foundation pit, and a cast-in-place pile disposed in the foundation pit, wherein the upper end of the cast-in-place pile is disposed above the bottom surface of the foundation pit, and the lower end of the cast-in-place pile is embedded in the bottom surface of the foundation pit; a transverse reinforcing column is further arranged at the middle upper part of the stress plate; the cast-in-place pile further comprises an inclined supporting column, wherein the inclined supporting column is composed of at least two steel pipes which can be butted together, the lower end of the inclined supporting column is connected with the top end of the cast-in-place pile, and the upper end of the inclined supporting column is connected with the transverse reinforcing column; carry out the butt through bearing diagonal post and bored concrete pile to upper portion in the atress board and support, drive the atress board and remove when preventing that the foundation ditch lateral wall from bearing great soil pressure.
The weak point of prior art lies in, the length of bearing diagonal pole is decided by the demand in concrete place (if the angle between foundation ditch lateral wall and the foundation ditch bottom undulant in certain extent), and the bearing diagonal pole comprises a plurality of steel pipe concatenations, need measure the steel pipe according to job site actual conditions and assemble fixedly after cutting, and the suitability is lower and increase the engineering time.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a foundation ditch support has the length of the arbitrary change bearing diagonal pole in order to satisfy the actual demand of different job sites and reduce engineering time's effect.
The above technical purpose of the present invention can be achieved by the following technical solutions:
a foundation pit support comprises a stress plate, an inclined support rod and a support pile wedged at the bottom of a foundation pit, wherein the stress plate is abutted against the side wall of the foundation pit, one end of the inclined support rod is hinged with the stress plate, and the other end of the inclined support rod is hinged with the support pile; the inclined support rod comprises an inclined rod, a nut which is sleeved on the inclined tube and a nut which is sleeved on the inclined tube, one end of the inclined rod is hinged to the stress plate, one end of the inclined tube is hinged to the support pile, the inclined tube is of a double-half structure which is separated along the axis, the peripheral side face of one end, close to the inclined rod, of the inclined tube is a conical surface, the small end of the conical surface is close to the inclined rod relative to the large end of the conical surface, and the conical surface of the inclined tube is in threaded connection with the nut.
By adopting the technical scheme, the length of the inclined supporting rod can be adjusted by the sleeve connection between the inclined tube and the inclined rod; meanwhile, a nut sleeved on the inclined tube is screwed, and one end of the inclined tube is set to be a conical surface, so that the nut forces two separated parts of the inclined tube to be folded and abutted against the peripheral surface of the inclined rod in the process of downward movement of the nut along the axis of the inclined tube, and the effect of fixing the relative position between the inclined tube and the inclined rod is achieved; the length of the inclined supporting rod can be changed randomly to meet actual requirements of different construction sites, operation is simple and convenient, and construction time is shortened.
The utility model discloses further set up to: the screw cap is characterized in that a convex block is fixed on the end face of the screw cap close to the inclined rod in a protruding mode, the inclined rod is provided with a guide block, a guide surface which is abutted to the edge of the side wall of the convex block is arranged on the guide block along the screw cap screwing-out direction, and the orientation of the guide surface is the same as the screwing-in direction of the screw cap.
By adopting the technical scheme, when peripheral soil body is deformed due to excavation or the soil body is deformed due to other reasons, the side wall of the foundation pit is deformed to apply force to the stress plate, the direction of the force is acted on the inclined rod along the axis of the inclined rod, the inclined rod is displaced downwards in an inclined manner relative to the inclined pipe at the moment, the inclined rod drives the guide block to move relative to the lug, the acting force is divided into component force for forcing the nut to rotate along the guide surface, the nut is screwed downwards and the pressure of the inclined pipe against the peripheral surface of the inclined rod is increased, so that the friction force between the inclined pipe and the inclined rod is increased, the relative position between the inclined pipe and the inclined rod is further limited, and the deformation of the whole supporting structure due to the deformation of the side wall.
The utility model discloses further set up to: the supporting pile is fixed with a fixing plate, through grooves are formed in one ends, far away from the inclined rods, of two separated parts of the inclined tube respectively, opposite groove faces between the two through grooves are abutted to two sides of the fixing plate respectively, the inclined tube is hinged to a pin shaft penetrating through the fixing plate, and when the two separated parts of the inclined tube are attached to each other, the shortest distance between the opposite groove faces of the two through grooves is smaller than the thickness of the fixing plate.
By adopting the technical scheme, the hinged connection between the inclined tube and the support pile can be realized; because of the deformation of the side wall of the foundation pit, the guide block props against the screw cap, when the screw cap is forced to downwards screw, the screw cap forces two separated parts of the inclined tube to be mutually folded and propped against two sides of the fixing plate and increases the friction force between the inclined tube and the fixing plate, thereby more limiting the rotation of the inclined tube relative to the supporting column and reducing the deformation of the whole supporting structure caused by the deformation of the side wall of the foundation pit.
The utility model discloses further set up to: the opposite groove surfaces between the two through grooves are respectively provided with a plurality of sawtooth-shaped first protrusions in a protruding mode, and the side face of the fixing plate is provided with a second protrusion meshed with the first protrusions.
By adopting the technical scheme, the first protrusion and the second protrusion are forced to be mutually occluded by screwing the nut, so that the relative rotation friction between the inclined tube and the support pile is increased, and the relative rotation between the inclined tube and the support pile is limited.
The utility model discloses further set up to: the side wall protrusion of week of down tube is provided with annular shaft shoulder, and the side wall of week of shaft shoulder sets up a plurality of along the gomphosis groove of circumference equidistance arrangement, the guide block gomphosis is in gomphosis groove and the guide block is kept away from the tip of down tube and is contradicted in the axial terminal surface of gomphosis groove.
By adopting the technical scheme, when the length of the inclined supporting rod is adjusted, the guide block is not embedded in the embedding groove, after the screw cap is screwed, the length of the inclined supporting rod is adjusted, and then the guide block is embedded into the embedding groove along the radial direction of the inclined rod, so that the guide block on the inclined rod is prevented from hindering the screwing of the screw cap in the process of adjusting the length of the inclined supporting rod; the plurality of embedded grooves for the embedding of the guide blocks can be arranged, so that the situation that the guide blocks embedded into the embedded grooves can not conflict with the convex blocks due to the fact that the screwing angles of the nuts can not be accurately estimated can be avoided.
The utility model discloses further set up to: the side wall of any one of the separated parts of the inclined tube is convexly provided with a plurality of alignment rods, and the alignment rods are inserted into alignment holes formed in the side wall of the other separated part along the direction that the two separated parts are close to or separated from each other.
By adopting the technical scheme, the two separation parts of the inclined tube are prevented from relative displacement along the axis direction through the splicing connection between the alignment rod and the alignment hole, so that the overall stability is improved.
The utility model discloses further set up to: one end of the alignment rod is provided with a conical tip.
By adopting the technical scheme, the conical tip is abutted against the outer edge of the orifice of the alignment hole, and the conical tip guides the alignment rod to be accurately inserted into the alignment hole, so that the alignment precision of the two separated parts can be improved.
The utility model discloses further set up to: the side surface of the inclined rod, which is close to one end of the inclined tube, is provided with a plurality of annular grooves which are distributed along the axis, and rubber rings are clamped in the grooves.
By adopting the technical scheme, the surface of the rubber ring is contacted with the inner side wall of the inclined tube, so that the friction force between the inclined rod and the inclined tube can be increased; meanwhile, the rubber ring has elasticity, and the rubber ring can fill a gap between the inner wall of the inclined tube and the outer wall of the inclined rod, so that the friction force is increased, and the relative sliding trend between the inclined tube and the inclined rod is reduced.
To sum up, the utility model discloses following beneficial effect has:
1. the length of the inclined support rod can be adjusted through the sleeve connection between the inclined tube and the inclined rod; meanwhile, a nut sleeved on the inclined tube is screwed to play a role in fixing the relative position between the inclined tube and the inclined rod; the length of the inclined supporting rod can be changed at will to meet the actual requirements of different construction sites, the operation is simple and convenient, and the construction time is reduced;
2. the guide block is forced by the pressure of the side wall of the foundation pit to screw the screw cap downwards, the pressure of the inclined tube abutting against the periphery of the inclined rod is increased, and therefore the friction force between the inclined tube and the inclined rod is increased, the relative position between the inclined tube and the inclined rod is limited more, and the deformation of the whole supporting structure caused by the deformation of the side wall of the foundation pit is reduced.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
figure 2 is an explosion diagram of the structure of the utility model.
In the figure, 1, a diagonal rod; 2. an inclined tube; 3. a nut; 4. a fixing plate; 10. an inclined support rod; 11. a shaft shoulder; 12. a fitting groove; 13. a guide block; 14. a groove; 20. a stress plate; 21. an alignment rod; 22. aligning holes; 23. a through groove; 24. a pin shaft; 25. a first bulge; 30. supporting piles; 31. a bump; 41. and a second bulge.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
A foundation pit support, as shown in figure 1, comprises a stress plate 20, an inclined support rod 10 and a support pile 30 wedged at the bottom of a foundation pit, wherein the inclined support rod 10 comprises an inclined rod 1, a screw cap 3 sleeved on an inclined tube 2 and a screw cap sleeved on the inclined tube 2; one end of the inclined rod 1 is hinged with the stress plate 20, one end of the inclined tube 2 is hinged with the support pile 30, the peripheral side surface of the other end of the inclined tube 2 is a conical surface, the small end of the conical surface is close to the inclined rod 1 relative to the large end of the conical surface, and the screw cap 3 is in threaded connection with the conical surface of the inclined tube 2.
As shown in fig. 2, an annular shaft shoulder 11 is fixed to the peripheral side wall of one end of the diagonal rod 1 close to the diagonal tube 2 in a protruding manner, a plurality of embedding grooves 12 which are arranged at equal intervals along the circumferential direction and are used for embedding guide blocks 13 are formed in the peripheral side wall of the shaft shoulder 11, the end part, far away from the diagonal tube 2, of each guide block 13 abuts against the axial end face of each embedding groove 12, and each embedding groove 12 is fixedly connected with a bolt penetrating through each guide block 13; the end surface of the screw cap 3 close to the diagonal rod 1 is convexly fixed with a convex block 31, and the guide block 13 is provided with a guide surface which is abutted against the edge of the side wall of the convex block 31 along the screwing-out direction of the screw cap 3, wherein the orientation of the guide surface is the same as the screwing-in direction of the screw cap 3.
As shown in fig. 2, a plurality of annular grooves 14 arranged along the axis are formed in the circumferential side surface of one end of the diagonal rod 1 close to the diagonal tube 2, and a rubber ring is clamped in each groove 14.
As shown in fig. 2, the inclined tube 2 is a double-half structure separated along an axis, a plurality of alignment rods 21 arranged along the axis are fixed on the side wall of any one of the separated parts of the inclined tube 2 in a protruding manner, one end of each alignment rod 21 is a conical tip, and the alignment rods 21 are inserted into alignment holes 22 formed in the side walls of the other separated part along the direction in which the two separated parts are close to or away from each other.
As shown in fig. 2, a fixing plate 4 is fixed at the top of the supporting pile 30, through grooves 23 are respectively formed in one ends, far away from the diagonal rod 1, of two separated portions of the inclined tube 2, opposite groove surfaces between the two through grooves 23 respectively abut against two sides of the fixing plate 4, the inclined tube 2 is hinged to the supporting pile 30 through a pin shaft 24 which is simultaneously arranged in the two through grooves 23 and the fixing plate 4 in a penetrating manner, and when the two separated portions of the inclined tube 2 are attached to each other, the shortest distance between the opposite groove surfaces of the two through grooves 23 is smaller than the thickness of the fixing plate 4.
As shown in fig. 2, a plurality of first sawtooth-shaped protrusions 25 are respectively fixed on opposite groove surfaces between the two through grooves 23 in a protruding manner, the first protrusions 25 are arranged around the circumference of the hinge axis of the inclined tube 2 and the fixed plate 4 at equal intervals, and two side surfaces of the fixed plate 4 are respectively provided with second protrusions 41 engaged with the first protrusions 25.
Working way (refer to fig. 2)
S1, the supporting pile 30 is wedged at the bottom of the foundation pit in a static pressure mode;
s2, completing the hinged connection between the inclined tube 2 and the fixed plate 4 through the pin shaft 24;
s3, the two separated parts of the inclined tube 2 are preliminarily folded through the splicing of the alignment rod 21 and the alignment hole 22;
s4, adjusting the inclined tube 2 and the inclined rod 1 to slide relatively until the stress plate 20 butts against the side wall of the foundation pit;
s5, screwing the screw cap 3, wherein one end of the inclined tube 2 is set to be a conical surface, so that the screw cap 3 forces two separated parts of the inclined tube 2 to be folded and abutted against the peripheral surface of the inclined rod 1 in the process that the screw cap 3 moves downwards along the axis of the inclined tube 2, and the function of fixing the relative position between the inclined tube 2 and the inclined rod 1 is achieved;
s6, embedding the guide block 13 into the embedding groove 12 along the radial direction of the diagonal rod 1, enabling the guide surface on the guide block 13 to abut against the edge of the side wall of the bump 31, enabling the orientation of the guide surface to be the same as the screwing direction of the nut 3, and finishing the installation of the foundation pit support;
s8, when the surrounding soil body is deformed due to excavation or the soil body is deformed due to other reasons, the side wall of the foundation pit deforms to apply force to the stress plate 20, the direction of the force is applied to the inclined rod 1 along the axis of the inclined rod 1, at the moment, the inclined rod 1 displaces downwards in an inclined mode relative to the inclined pipe 2, the inclined rod 1 drives the guide block 13 to move relative to the bump 31, the force is divided into component force for forcing the nut 3 to rotate along the guide surface, the nut 3 is screwed downwards and the pressure of the inclined pipe 2 abutting against the peripheral surface of the inclined rod 1 is increased, so that the friction force between the inclined pipe 2 and the inclined rod 1 is increased, the relative position between the inclined pipe 2 and the inclined rod 1 is further limited, and the deformation of the whole supporting structure due to the deformation of the side.
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 to the present embodiment without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent laws within the scope of the present invention.
Claims (8)
1. The utility model provides a foundation ditch support, includes atress board (20) and bracing piece (10) to one side, characterized by: the support pile is characterized by further comprising a support pile (30) wedged at the bottom of the foundation pit, the stress plate (20) is abutted against the side wall of the foundation pit, one end of the inclined support rod (10) is hinged with the stress plate (20), and the other end of the inclined support rod (10) is hinged with the support pile (30); the utility model discloses a bearing diagonal bracing piece, including bearing diagonal bracing piece (10), inclined tube (2) are located including down tube (1), cover and nut (3) that inclined tube (2) were located to the cover, the one end and the atress board (20) of down tube (1) are articulated, the one end and the support stake (30) of inclined tube (2) are articulated, inclined tube (2) set up to the double-half structure along the axis separation, the week side that inclined tube (2) are close to the one end of inclined tube (1) is close to inclined tube (1) for conical surface and conical surface's tip is close to inclined tube (1) for the main aspects, the conical surface and nut (3) threaded connection of inclined tube (2).
2. The foundation pit support of claim 1, wherein: the screw cap (3) are close to the end face protrusion of the inclined rod (1) and are fixedly provided with the convex blocks (31), the inclined rod (1) is provided with the guide blocks (13), the guide blocks (13) are provided with guide surfaces which are inconsistent with the edges of the side walls of the convex blocks (31) along the screwing-out direction of the screw cap (3), and the orientation of the guide surfaces is the same as the screwing-in direction of the screw cap (3).
3. The foundation pit support of claim 2, wherein: support stake (30) and be fixed with fixed plate (4), logical groove (23) have been seted up respectively to two separation parts's of pipe chute (2) one end of keeping away from down tube (1), and relative groove face between two logical groove (23) contradicts respectively in the both sides of fixed plate (4) and round pin axle (24) articulated connection that fixed plate (4) were worn to establish in pipe chute (2), and when two separation parts of pipe chute (2) were laminated each other, the shortest distance between the relative groove face of two logical groove (23) was less than the thickness of fixed plate (4).
4. The foundation pit support of claim 3, wherein: a plurality of saw-toothed first protrusions (25) are respectively arranged on opposite groove surfaces between the two through grooves (23) in a protruding mode, and second protrusions (41) meshed with the first protrusions (25) are arranged on the side face of the fixing plate (4).
5. The foundation pit support of claim 2, wherein: the inclined rod is characterized in that an annular shaft shoulder (11) is arranged on the peripheral side wall of the inclined rod (1) in a protruding mode, a plurality of embedding grooves (12) are formed in the peripheral side wall of the shaft shoulder (11) and are distributed at equal intervals in the circumferential direction, the guide block (13) is embedded in the embedding grooves (12), and the end portion, away from the inclined tube (2), of the guide block (13) abuts against the axial end face of the embedding grooves (12).
6. The foundation pit support according to any one of claims 1 to 5, wherein: the side wall of any one of the separated parts of the inclined tube (2) is convexly provided with a plurality of alignment rods (21), and the alignment rods (21) are inserted into alignment holes (22) formed in the side wall of the other separated part along the direction that the two separated parts are close to or separated from each other.
7. The foundation pit support of claim 6, wherein: one end of the alignment rod (21) is arranged to be a conical tip.
8. The foundation pit support according to any one of claims 1 to 5, wherein: the side surface of the inclined rod (1) close to one end of the inclined tube (2) is provided with a plurality of annular grooves (14) which are distributed along the axis, and rubber rings are clamped in the grooves (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921357020.9U CN210482321U (en) | 2019-08-20 | 2019-08-20 | Foundation pit support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921357020.9U CN210482321U (en) | 2019-08-20 | 2019-08-20 | Foundation pit support |
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| Publication Number | Publication Date |
|---|---|
| CN210482321U true CN210482321U (en) | 2020-05-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921357020.9U Active CN210482321U (en) | 2019-08-20 | 2019-08-20 | Foundation pit support |
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| Country | Link |
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| CN (1) | CN210482321U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112982441A (en) * | 2021-03-18 | 2021-06-18 | 中建七局第一建筑有限公司 | Foundation pit supporting structure |
| CN114658004A (en) * | 2022-04-08 | 2022-06-24 | 杭州福世德岩土科技有限公司 | Ground supporting device that geotechnical engineering construction used |
-
2019
- 2019-08-20 CN CN201921357020.9U patent/CN210482321U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112982441A (en) * | 2021-03-18 | 2021-06-18 | 中建七局第一建筑有限公司 | Foundation pit supporting structure |
| CN114658004A (en) * | 2022-04-08 | 2022-06-24 | 杭州福世德岩土科技有限公司 | Ground supporting device that geotechnical engineering construction used |
| CN114658004B (en) * | 2022-04-08 | 2024-01-12 | 杭州福世德岩土科技有限公司 | Foundation supporting device for geotechnical engineering construction |
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