CN211006679U - Anti uplift soil pressure balancing device for foundation pit - Google Patents
Anti uplift soil pressure balancing device for foundation pit Download PDFInfo
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- CN211006679U CN211006679U CN201921555772.6U CN201921555772U CN211006679U CN 211006679 U CN211006679 U CN 211006679U CN 201921555772 U CN201921555772 U CN 201921555772U CN 211006679 U CN211006679 U CN 211006679U
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- bottom plate
- groove
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Abstract
The utility model relates to an anti uplift soil pressure balancing unit of foundation ditch, include prefabricated bottom plate and install the gravity mound at the prefabricated bottom plate upside, the transversal square of personally submitting of gravity mound, the fixed support base that is provided with on the bottom surface of gravity mound supports the base and sets up along the outside limit of gravity mound bottom surface, seted up on prefabricated bottom plate and inlayed and establish the groove, the shape of inlaying and establishing the groove is not less than the projection shape of supporting the base on prefabricated bottom plate top surface, the degree of depth that inlays and establishes the groove equals to support the distance between base and the gravity mound bottom surface, inlay and establish the inslot and laid the plastic woven cloth, the plastic woven cloth cladding is in supporting base and the gravity mound outside, and the height that highly is higher than the prefabricated bottom plate top surface. Concrete is when unrestrained to the gap of gravity mound and prefabricated bottom plate laminating, is kept apart by the plastic woven cloth, makes gravity mound and prefabricated bottom plate be difficult for bonding together, can pour the foundation bottom plate of foundation ditch bottom surface after, convenient with gravity mound and bottom plate separation, is convenient for retrieve the gravity mound and recycles.
Description
Technical Field
The utility model belongs to the technical field of the technique of foundation ditch protection and specifically relates to an anti uplift soil pressure balancing unit of foundation ditch is related to.
Background
At present, the anti-uplift and deformation control of the pit bottom is always a difficult problem in foundation pit and low excavation engineering. For foundation pits in soft strata such as silt and mucky soil, a safe, convenient and recyclable device is urgently needed to improve the anti-uplift stability of the bottom of the foundation pit and control the deformation of the surrounding environment of the foundation pit.
For example, chinese patent No. CN203834485U discloses a foundation pit uplift-resistant earth pressure balancing device. The foundation pit comprises a plurality of gravity piers and bottom plates, wherein the bottom plates are placed at the bottoms of foundation pits with surrounding walls, the gravity piers are placed on the bottom plates, and connecting rods can be arranged between every two adjacent gravity piers; a supporting beam can be arranged between the gravity pier adjacent to the foundation pit enclosure wall and the enclosure wall; a tie bar may be provided between each adjacent base plate. The foundation pit has the advantages that the vertical pressure of the bottom surface of the foundation pit is supplemented, the soil pressure variable is balanced, the soil body confining pressure is improved, the uplift resistance stability of the bottom of the foundation pit is improved, the underground excavation risk is reduced, and the deformation of the foundation pit is controlled.
In the construction process, the bottom plate is laid on the bottom surface of the foundation pit, and then the gravity pier is hoisted and vertically placed in the foundation pit and fixedly installed on the bottom plate. After the gravity pier is stably installed, foundation pit earth excavation operation is carried out, then foundation slab pouring is carried out immediately, and after the foundation slab pouring is completed and the strength meets the requirement, the gravity pier is taken down. However, in the pouring process, part of concrete is easily scattered into a gap formed by the attachment of the gravity pier and the bottom plate, so that the gravity pier and the bottom plate are bonded together, the gravity pier cannot be conveniently taken down subsequently, if the gravity pier is taken down by force, the bottom plate is easy to crack, and even the poured foundation bottom plate is damaged.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art existence, the utility model aims at providing an anti uplift soil pressure balancing unit of foundation ditch, after pouring the foundation bottom plate of foundation ditch bottom surface, can be convenient with gravity mound and bottom plate separation, be convenient for retrieve the gravity mound and recycle.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:
the utility model provides an anti soil pressure balancing unit that rises of foundation ditch, includes prefabricated bottom plate and installs the gravity mound at the prefabricated bottom plate upside, the transversal square of personally submitting of gravity mound, the fixed support base that is provided with on the bottom surface of gravity mound supports the base and sets up along the outside limit of gravity mound bottom surface, seted up on prefabricated bottom plate and inlayed and establish the groove, the shape of inlaying and establishing the groove is not less than the projection shape of support base on prefabricated bottom plate top surface, inlay the degree of depth that establishes the groove and equal to the distance between support base and the gravity mound bottom surface, inlay and establish the inslot and laid plastic woven cloth, plastic woven cloth cladding is in supporting base and gravity mound outside, and the height that highly is higher than prefabricated bottom plate top surface of plastic woven.
By adopting the technical scheme, when the plastic woven cloth is used, the plastic woven cloth is covered on the embedding groove by paving the plastic woven cloth on the prefabricated bottom plate, then the gravity pier is placed on the prefabricated bottom plate, the supporting bottom edge on the bottom surface of the gravity pier is embedded in the embedding groove, and at the moment, the plastic woven cloth is padded between the supporting bottom edge and the embedding groove. When pouring, the plastic woven cloth is coated on the outer side surface of the gravity pier, concrete is isolated by the plastic woven cloth when being scattered to a gap between the gravity pier and the prefabricated bottom plate, so that the gravity pier and the prefabricated bottom plate are not easy to be bonded together, and the gravity pier and the bottom plate can be conveniently separated after the foundation bottom plate of the bottom surface of the foundation pit is poured, and the gravity pier can be conveniently recycled.
The utility model discloses further set up to: the inserting groove is square, the inserting groove is formed in the outer side edge of the inserting groove, the inserting groove is square, the inner side face of the inserting groove coincides with the outer side face of the inserting groove, the inserting groove in the inserting groove is provided with four inserting plates, one inserting plate is inserted into the four edges of the inserting groove, the height of the upper side edge of each inserting plate is higher than the top face of the prefabricated bottom plate, and the plastic woven cloth is clamped between the inserting plate and the gravity pier.
Through adopting above-mentioned technical scheme, make to mould to compile cloth pad and establish between board and the gravity mound, on the one hand can be fine the receipts bundle and play to mould to compile cloth, on the other hand can make the concrete be difficult for bonding on moulding to compile cloth when concreting, be convenient for follow-up with moulding to compile cloth recovery and recycle.
The utility model discloses further set up to: the distance between the bottom surface of the insertion groove and the top surface of the prefabricated bottom plate is not less than the distance between the bottom surface of the insertion groove and the top surface of the prefabricated bottom plate.
By adopting the technical scheme, when the gravity pier is taken out subsequently, the inserting plate can be directly pushed to be separated from the inserting groove. Even if the inserting plate is bonded on the prefabricated bottom plate by concrete, the inserting plate can be well taken down from the prefabricated bottom plate.
The utility model discloses further set up to: the bottom surface of the inserting groove and the bottom surface of the embedding groove are positioned in the same plane, the projection of the inserting plate on the bottom surface of the inserting groove is isosceles trapezoids, the isosceles trapezoids are sequentially connected end to form a first rectangular frame, and the projection of the first rectangular frame on the bottom surface of the inserting groove is the same as the shape of the bottom surface of the inserting groove; when the inserting plate is turned to the side face parallel to the bottom face of the embedding groove, the projection of the inserting plate on the top face of the prefabricated bottom plate is also isosceles trapezoids, the isosceles trapezoids are sequentially connected end to form a second rectangular frame, and the projection of the second rectangular frame on the top face of the prefabricated bottom plate is superposed with the shape of the adding of the inserting groove and the bottom face of the embedding groove.
Through adopting above-mentioned technical scheme, when the gravity mound was placed on prefabricated bottom plate, each prefabricated bottom plate can be fine inlay establish insert establish the inslot, and meet in proper order, get up the gravity mound enclosure to reach the effect of gathering up the plastic woven cloth. After the gravity pier is taken down from the prefabricated bottom plate, the four insertion plates can be sequentially connected to form a rectangular frame by pushing the insertion plates, and are embedded in the insertion grooves and the embedding grooves formed in the top surface of the prefabricated bottom plate, so that the top surface of the prefabricated bottom plate is smooth, and the subsequent pouring of the prefabricated bottom plate is facilitated.
The utility model discloses further set up to: the cross section of the gravity pier is square, and the cross sections of the supporting bottom edge, the embedding groove and the inserting groove are square frames.
Through adopting above-mentioned technical scheme, can make the supporting baseplate on the gravity pier bottom inlay from a plurality of angles and establish in inlaying and establishing the inslot to make each insert the shape of establishing the board also the same, be convenient for assemble, it is very convenient to use.
The utility model discloses further set up to: the outer side surface of the gravity pier is fixedly provided with a circle of anchoring steel ring, and the anchoring steel ring is fixedly provided with a lifting lug.
Through adopting above-mentioned technical scheme, when hoisting the gravity mound to the foundation ditch in, can be through tying up the hoist cable on the lug to convenient hoist the gravity mound to the foundation ditch in.
The utility model discloses further set up to: anchoring steel ring and gravity mound on all seted up the anchor hole, anchor hole on the anchoring steel ring equals with the anchor hole quantity on the gravity mound, and the anchor hole on the anchoring steel ring all corresponds with the anchor hole on a gravity mound, two anchor holes that correspond overlap each other, the anchor in wear to be equipped with the anchor nail, and the anchor nail passes and moulds the fabric.
Through adopting above-mentioned technical scheme, after moulding and weaving cloth cladding lifting power mound, through wearing to be equipped with the anchor nail in the anchor hole to simple edge with moulding and weaving cloth is fixed, makes its cladding that can be fine on the lateral surface of gravity mound, and it is more convenient to use.
The utility model discloses further set up to: the bottom surface of the prefabricated bottom plate is fixedly provided with at least two supporting cushion rods, and the supporting cushion rods are parallel to each other.
Through adopting above-mentioned technical scheme, because the foundation ditch bottom surface is unevenness's structure usually, through be provided with the support filler rod on the bottom surface at prefabricated bottom plate, can make prefabricated bottom plate when laying the foundation ditch in, more steady, the follow-up pouring of being convenient for.
To sum up, the utility model discloses a beneficial technological effect does:
1. the gravity pier and the prefabricated bottom plate are not easy to adhere together, and the gravity pier and the bottom plate can be conveniently separated after the foundation bottom plate on the bottom surface of the foundation pit is poured;
2. the structure is simple, the assembly is convenient, and the use is easy.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is an exploded schematic view of the present invention.
In the figure, 1, a bottom plate is prefabricated; 11. a support pad bar; 12. embedding a groove; 2. a gravity pier; 21. supporting the bottom edge; 3. plastic woven cloth; 4. anchoring a steel ring; 41. lifting lugs; 42. an anchoring hole; 43. anchoring nails; 5. inserting into a groove; 51. inserting the board; 6. a through groove.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, for the utility model discloses an anti soil pressure balancing unit that rises of foundation ditch, including prefabricated bottom plate 1 and gravity mound 2, prefabricated bottom plate 1 is squarely. Two parallel supporting cushion rods 11 are integrally formed on the bottom surface of the prefabricated bottom plate 1, the supporting cushion rods 11 are square rods and are arranged along two opposite side edges of the prefabricated bottom plate 1. A gravity pier 2 is arranged on the upper side of the prefabricated floor 1.
Referring to fig. 1 and 2, the cross section of the gravity pier 2 is square, a bottom support edge 21 is integrally formed on the bottom surface of the gravity pier 2, the cross section of the bottom support edge 21 is a square frame, and the bottom support edge 21 is arranged along the outer side of the bottom surface of the gravity pier 2. An embedding groove 12 is formed in the top surface of the prefabricated bottom plate 1, the shape of the embedding groove 12 is equal to the projection area of the support bottom plate on the upper side surface of the prefabricated bottom plate 1, and the distance between the bottom surface of the embedding groove 12 and the upper side surface of the prefabricated bottom plate 1 is equal to the distance between the lower side surface of the support bottom edge 21 and the lower side surface of the gravity pier 2.
Referring to fig. 1 and 2, plastic woven cloth 3 is laid in the embedding groove 12, the plastic woven cloth 3 covers the outer side of the gravity pier 2, an anchoring steel ring 4 is mounted on the side surface of the gravity pier 2 through an expansion bolt in an anchoring mode, the anchoring steel ring 4 is sleeved on the gravity pier 2, and a lifting lug 41 is welded on the anchoring steel ring 4. All seted up anchor hole 42 on four sides of gravity mound 2, also seted up anchor hole 42 on anchor steel ring 4, the anchor hole 42 quantity on anchor steel ring 4 equals with the anchor hole 42 quantity on the gravity mound 2, and anchor hole 42 on the gravity mound 2 and the anchor hole 42 one-to-one on the anchor steel ring 4, and the axis of two anchor holes 42 that correspond each other is located same straight line. An anchoring nail 43 penetrates through the anchoring hole 42, the edge of the plastic woven cloth 3 is positioned on the upper side of the anchoring steel ring 4, and the anchoring nail 43 penetrates through the plastic woven cloth 3 simultaneously.
Referring to fig. 1 and 2, a circle of inserting grooves 5 are formed on the outer side surfaces of the embedding grooves 12, the bottom surfaces of the inserting grooves 5 and the bottom surfaces of the embedding grooves 12 are located in the same plane, the cross sections of the inserting grooves 5 are square frames, and the inner side surfaces of the inserting grooves 5 are overlapped with the outer side surfaces of the embedding grooves 12. The vertically-arranged inserting plates 51 are inserted into the inserting grooves 5, the projections of the inserting plates 51 on the side surfaces of the gravity piers 2 attached to the inserting grooves are isosceles trapezoids, the upper side edges of the inserting plates 51 are higher than the upper side edges of the prefabricated bottom plates 1, the through grooves 6 are formed in the bottom surfaces of the inserting plates 51, and the projections of the inserting plates 51 on the bottom surfaces of the inserting grooves 5 are isosceles trapezoids. When the inserting plate 51 is in a vertical state, the isosceles trapezoids projected on the bottom surface of the inserting groove 5 are sequentially connected end to form a first rectangular frame, and the shape of the first rectangular frame is the same as that of the bottom surface of the inserting groove 5. When the inserting plate 51 is turned to the horizontal state, the isosceles trapezoids projected on the top surface of the prefabricated bottom plate 1 are sequentially connected end to form a second rectangular frame, the length of the inner side edge of the second rectangular frame is equal to the length of the inner side edge of the embedding groove 12, and the length of the outer side edge of the second rectangular frame is equal to the length of the outer side surface of the inserting groove 5.
When the gravity pier is used, the inserting plate 51 is inserted into the inserting groove 5, the plastic woven cloth 3 is laid on the prefabricated bottom plate 1, the plastic woven cloth 3 covers the embedding groove 12, then the gravity pier 2 is placed on the prefabricated bottom plate 1, the supporting bottom edge 21 on the bottom surface of the gravity pier 2 is embedded in the embedding groove 12, and at the moment, the plastic woven cloth 3 is padded between the supporting bottom edge 21 and the inserting plate 51. The plastic woven cloth 3 is bound up, when concrete is poured, the concrete is separated by the plastic woven cloth 3 and the inserting plate 51 when the concrete is scattered to a gap where the gravity pier 2 and the prefabricated bottom plate 1 are attached, so that the gravity pier 2 and the prefabricated bottom plate 1 are not easy to adhere to each other, and the concrete is not easy to adhere to the plastic woven cloth 3. After the pouring is completed, the gravity block 2 and the plastic woven cloth 3 can be easily removed, and then the inserting plate 51 is knocked by a tool such as a hammer to separate the inserting plate 51 from the inserting groove 5. And the prefabricated bottom plate 1 is embedded in the inserting groove 5 and the embedding groove 12 on the top surface of the prefabricated bottom plate 1, so that the top surface of the prefabricated bottom plate 1 becomes flat and convenient for subsequent pouring.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. The utility model provides an anti mound earth pressure balancing unit that rises of foundation ditch, includes prefabricated bottom plate (1) and installs gravity mound (2) at prefabricated bottom plate (1) upside, its characterized in that: the transversal personally submitting of gravity mound (2) square, the fixed support base (21) that is provided with on the bottom surface of gravity mound (2), support base (21) and set up along the outside limit of gravity mound (2) bottom surface, it establishes groove (12) to have seted up to inlay on prefabricated bottom plate (1), the shape of establishing groove (12) is not less than the projection shape of supporting base (21) on prefabricated bottom plate (1) top surface, the degree of depth that inlays and establishes groove (12) equals to support the distance between base (21) and gravity mound (2) bottom surface, inlay and establish groove (12) and laid plastic woven fabric (3), plastic woven fabric (3) cladding is in supporting base (21) and gravity mound (2) outside, and the height that highly is higher than prefabricated bottom plate (1) top surface of plastic woven fabric (3) edge.
2. The foundation pit uplift-resistant earth pressure balancing device as claimed in claim 1, wherein: the inserting groove (12) is square frame-shaped, the inserting groove (5) is formed in the outer side edge of the inserting groove (12), the inserting groove (5) is square frame-shaped, the inner side surface of the inserting groove (5) is overlapped with the outer side surface of the inserting groove (12), the inserting groove (5) in the inserting groove (5) is provided with four inserting plates (51), one inserting plate is inserted into each inserting plate (51) on each of the four sides of the inserting groove (5), the height of the upper side edge of each inserting plate (51) is higher than the top surface of the prefabricated bottom plate (1), and the plastic woven cloth (3) is clamped between the inserting plates (51) and the gravity pier (2).
3. The foundation pit uplift-resistant earth pressure balancing device as claimed in claim 2, wherein: the distance between the bottom surface of the inserting groove (5) and the top surface of the prefabricated bottom plate (1) is not less than the distance between the bottom surface of the embedding groove (12) and the top surface of the prefabricated bottom plate (1).
4. The foundation pit uplift-resistant earth pressure balancing device as claimed in claim 3, wherein: the bottom surface of the inserting groove (5) and the bottom surface of the embedding groove (12) are positioned in the same plane, the projection of the inserting plate (51) on the bottom surface of the inserting groove (5) is isosceles trapezoids, the isosceles trapezoids are sequentially connected end to form a first rectangular frame, and the projection of the first rectangular frame on the bottom surface of the inserting groove (5) is the same as the shape of the bottom surface of the inserting groove (5); when the inserting plate (51) is turned to the side surface parallel to the bottom surface of the embedding groove (12), the projection of the inserting plate on the top surface of the prefabricated bottom plate (1) is also isosceles trapezoids, all the isosceles trapezoids are sequentially connected end to form a second rectangular frame, and the projection of the second rectangular frame on the top surface of the prefabricated bottom plate (1) is superposed with the shape of the adding of the inserting groove (5) and the bottom surface of the embedding groove (12).
5. The foundation pit uplift-resistant earth pressure balancing device as claimed in claim 4, wherein: the cross section of the gravity pier (2) is square, and the cross sections of the supporting bottom edge (21), the embedding groove (12) and the inserting groove (5) are square blocks.
6. The foundation pit uplift-resistant earth pressure balancing device as claimed in claim 1, wherein: the outer side surface of the gravity pier (2) is fixedly provided with a circle of anchoring steel ring (4), and the anchoring steel ring (4) is fixedly provided with a lifting lug (41).
7. The foundation pit uplift-resistant earth pressure balancing device as claimed in claim 6, wherein: anchor hole (42) have all been seted up on anchor steel ring (4) and gravity mound (2), anchor hole (42) on anchor steel ring (4) and anchor hole (42) quantity on gravity mound (2) equal, and anchor hole (42) on anchor steel ring (4) all correspond with anchor hole (42) on one gravity mound (2), two anchor holes (42) that correspond overlap each other, anchor hole (42) in wear to be equipped with the anchor nail, and the anchor nail passes and moulds plaiting (3).
8. The foundation pit uplift-resistant earth pressure balancing device as claimed in claim 1, wherein: the bottom surface of the prefabricated bottom plate (1) is fixedly provided with at least two supporting cushion rods (11), and the supporting cushion rods (11) are parallel to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921555772.6U CN211006679U (en) | 2019-09-18 | 2019-09-18 | Anti uplift soil pressure balancing device for foundation pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921555772.6U CN211006679U (en) | 2019-09-18 | 2019-09-18 | Anti uplift soil pressure balancing device for foundation pit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211006679U true CN211006679U (en) | 2020-07-14 |
Family
ID=71470661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921555772.6U Expired - Fee Related CN211006679U (en) | 2019-09-18 | 2019-09-18 | Anti uplift soil pressure balancing device for foundation pit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211006679U (en) |
-
2019
- 2019-09-18 CN CN201921555772.6U patent/CN211006679U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200714 Termination date: 20210918 |
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| CF01 | Termination of patent right due to non-payment of annual fee |