CN216615864U - Underground foundation pit supporting structure based on existing building - Google Patents
Underground foundation pit supporting structure based on existing building Download PDFInfo
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- CN216615864U CN216615864U CN202122863081.6U CN202122863081U CN216615864U CN 216615864 U CN216615864 U CN 216615864U CN 202122863081 U CN202122863081 U CN 202122863081U CN 216615864 U CN216615864 U CN 216615864U
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Abstract
The utility model relates to an underground foundation pit supporting structure based on an existing building, which comprises a plurality of concrete piles distributed along the circumferential direction of a foundation pit, wherein the concrete piles are prefabricated parts, adjacent concrete piles are spaced to form a steel sheet pile mounting interval, vertical slots are formed in the surface of the concrete piles positioned on one side of the steel sheet pile mounting interval, steel sheet piles are arranged in the steel sheet pile mounting interval, and two sides of each steel sheet pile are inserted into the vertical slots in the two adjacent concrete piles. The utility model provides an underground foundation pit supporting structure based on the existing building, which can partially recover and can effectively prevent the side wall of a foundation pit from shifting after partially recovering, and solves the problem that the side wall of the foundation pit can shift in the existing underground foundation pit construction process based on the existing building.
Description
Technical Field
The utility model relates to the field of buildings, in particular to an underground foundation pit supporting structure based on an existing building.
Background
Foundation pit engineering has been involved in all construction projects from ancient times to present. A large number of underground structure buildings such as underground parking factories, basements, underground subway stations, underground civil air defense projects and the like are gradually raised. Sometimes, a foundation under a built building is a building basement, a foundation pit needs to be dug at the moment, and at the moment, soil bodies on the periphery of the foundation pit need to be supported and then excavated on the basis of an underground foundation pit supporting structure of the existing building. Present underground excavation supporting construction based on current building is steel sheet pile structure, extracts the steel sheet pile after the construction finishes, and this excavation supporting construction although can have advantage that can recycle, but has following not enoughly: after the steel sheet pile is pulled out, soil around the foundation pit can shift towards the interior of the foundation pit.
SUMMERY OF THE UTILITY MODEL
The utility model provides an underground foundation pit supporting structure based on the existing building, which can be partially recycled and can effectively prevent the side wall of a foundation pit from shifting after the recycled part is recycled, and solves the problem that the side wall of the foundation pit can shift in the existing underground foundation pit construction process based on the existing building.
The technical problem is solved by the following technical scheme: the utility model provides an underground foundation ditch supporting construction based on current building, includes a plurality of concrete piles that distribute along foundation ditch circumference, the concrete pile is the prefab, and spaced apart formation steel sheet pile installation interval between the adjacent concrete pile, the concrete pile is located steel sheet pile installation interval one side and is equipped with vertical slot on the surface, be equipped with the steel sheet pile in the steel sheet pile installation interval, peg graft on two adjacent concrete piles in the vertical slot in the both sides of steel sheet pile. The steel sheet piles are installed at intervals of 15 to 40 cm, and the effect of preventing the displacement after the steel sheet piles are pulled out is optimal. The steel-based pile has the advantage of being convenient to pull out, but is not suitable for being left underground without being pulled out. According to the technical scheme, after the foundation pit construction is completed, the steel plate pile part is pulled out, and the concrete pile remains in the soil to play a role in preventing the side wall of the foundation pit from shifting.
Preferably, the steel sheet pile is provided with an arch portion that arches toward the outside of the foundation pit in the horizontal direction. The soil pressure resistance of the support in the construction engineering can be improved.
Preferably, the arch portion includes first steel wallboard, the second steel wallboard that one end is connected at first steel wallboard one end and the third steel wallboard that one end is connected at the first steel wallboard other end, and the distance between second steel wallboard and the third steel wallboard is from the one end that second steel wallboard is connected with first steel wallboard to the other end grow gradually. The lateral pressure resistance of the steel foundation pile can be further improved.
Preferably, the steel sheet pile further comprises a first connecting steel sheet with one end connected to the other end of the second steel wall plate and a second connecting steel sheet with one end connected to the other end of the third steel wall plate; and the other end of the first connecting steel plate is inserted into the vertical slot of one concrete pile, and the other end of the second connecting steel plate is inserted into the vertical slot of the other concrete pile. The structure is compact.
Preferably, the first steel wall plate, the second steel wall plate, the third steel wall plate, the first connecting steel plate and the second connecting steel plate are integrally formed together. The connection strength is good and the surface smoothness is convenient to keep.
Preferably, the surface of the concrete pile, which is located on one side of the steel sheet pile installation interval, is fixedly provided with two reinforcing steel plates, the reinforcing steel plates shield the notch of the vertical slot to form a clamping edge, a steel sheet pile insertion opening is formed between the two reinforcing steel plates, hook heads located in the vertical slot are arranged on two sides of the steel sheet pile in the horizontal direction, and the hook heads are matched with the clamping edge to prevent the steel sheet pile from being separated from the vertical slot through the steel sheet pile insertion opening. It is possible to preferably prevent the occurrence of separation between the concrete pile and the steel-based pile in the direction in which the concrete pile is distributed.
Preferably, the reinforced steel plate is cast with the concrete pile.
Preferably, the lower ends of the concrete piles are embedded with a plurality of steel support rods, the upper surfaces of the steel support rods are provided with slots, the slots extend in a direction perpendicular to the distribution direction of two adjacent concrete piles, the lower ends of the reinforcing steel plates are inserted into the slots and supported on the steel support rods, and the upper ends of the reinforcing steel plates are detachably connected with the concrete piles. After the construction is finished, the upper end of the reinforced steel plate and the concrete pile are disassembled, and then the reinforced steel plate is pulled out, so that the reinforced steel plate can be recycled.
Preferably, the steel support rods positioned on two opposite sides of the concrete are fixedly connected together in a one-to-one correspondence manner, the reinforced steel plates positioned on two opposite sides of the concrete are sleeved at two ends of the connecting screw rod, one end of the connecting screw rod is connected with a first nut in a threaded manner, the other end of the connecting screw rod is connected with a second nut in a threaded manner, the reinforced steel plates are positioned between the first nut and the second nut, and the reinforced steel plates are abutted against the concrete pile under the clamping action of the first nut and the second nut. Can improve joint strength for the steel joist is difficult to deviate from the concrete pile when steel foundation pile and concrete pile produce separately. The structure is compact.
Preferably, an operation gap through which the connecting member passes when the reinforcing steel plate is lifted up is provided between the connecting screw and the upper end surface of the concrete pile. The connecting piece can be a lifting hook, a pull rope and the like. The reinforced steel plate is convenient to pull out.
The utility model has the following advantages: partial recovery can be carried out, and the side wall of the foundation pit cannot shift after the recovery of the recovery part.
Drawings
FIG. 1 is a schematic diagram of a first embodiment of the present invention;
FIG. 2 is an enlarged partial schematic view of FIG. 1;
fig. 3 is a schematic view of a concrete pile according to the second embodiment.
In the figure: concrete pile 1, vertical slot 2, steel sheet pile 3, first steel wallboard 3, second steel wallboard 4, third steel wallboard 5, first connecting steel plate 6, second connecting steel plate 7, reinforcing steel plate 8, card limit 9, gib head 10, steel die-pin 11, slot 12, connecting screw 13, first nut 14, second nut 15, operation clearance 16.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the first embodiment, referring to fig. 1 and 2, an underground foundation pit supporting structure based on an existing building comprises a plurality of concrete piles 1 distributed along the circumferential direction of a foundation pit, the concrete piles are prefabricated members, steel sheet pile installation intervals are formed between adjacent concrete piles at intervals, vertical slots 2 are formed in the surfaces of the concrete piles, which are located on one sides of the steel sheet pile installation intervals, steel sheet piles 3 are arranged in the steel sheet pile installation intervals, and two sides of each steel sheet pile are inserted into the vertical slots of the two adjacent concrete piles. The steel sheet pile is provided with an arch part which is arched towards the outside of the foundation pit along the horizontal direction. The arch portion includes that first steel wallboard 3, one end are connected at the second steel wallboard 4 of first steel wallboard one end and the third steel wallboard 5 at the first steel wallboard other end is connected to one end, and the distance between second steel wallboard and the third steel wallboard is from the one end that second steel wallboard is connected with first steel wallboard to the other end grow gradually. The steel sheet pile further comprises a first connecting steel sheet 6 with one end connected to the other end of the second steel wall plate and a second connecting steel sheet 7 with one end connected to the other end of the third steel wall plate; and the other end of the first connecting steel plate is inserted into the vertical slot of one concrete pile, and the other end of the second connecting steel plate is inserted into the vertical slot of the other concrete pile. The first steel wall plate, the second steel wall plate, the third steel wall plate, the first connecting steel plate and the second connecting steel plate are integrally formed together. The concrete pile is located steel sheet pile installation interval one side and is fixed with two reinforcing steel plates 8 on the surface, and the reinforcing steel plate shelters from the notch of vertical slot and forms card limit 9, forms the steel sheet pile inserted hole between two reinforcing steel plates, and the horizontal direction's of steel sheet pile both sides are equipped with and are located hook 10 in the vertical slot, the hook cooperation card limit prevents that the steel sheet pile is deviate from through the steel sheet pile inserted hole vertical slot. And the reinforced steel plate is poured together with the concrete pile.
The second embodiment is different from the first embodiment in that:
referring to fig. 3, a plurality of steel support rods 11 are embedded in the lower ends of the concrete piles, slots 12 are formed in the upper surfaces of the steel support rods, the slots extend in a direction perpendicular to the distribution direction of two adjacent concrete piles, and the lower ends of the reinforcing steel plates are inserted into the slots and supported on the steel support rods. The upper end of reinforcing steel sheet is in the same place with concrete pile detachable connection, specifically: the steel support rods positioned on two opposite sides of the concrete are fixedly connected together in a one-to-one correspondence mode (specifically, the steel support rods are integrally formed together or welded together), the reinforcing steel plates positioned on two opposite sides of the concrete are sleeved at two ends of the connecting screw rod 13, one end of the connecting screw rod is in threaded connection with the first nut 14, the other end of the connecting screw rod is in threaded connection with the second nut 15, the reinforcing steel plates are positioned between the first nut and the second nut, and the reinforcing steel plates are abutted to the concrete pile under the clamping effect of the first nut and the second nut. An operation gap 16 for the connecting piece to pass through when the reinforced steel plate is hoisted is arranged between the connecting screw rod and the upper end face of the concrete pile.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides an underground foundation ditch supporting construction based on current building, its characterized in that includes a plurality of concrete piles that distribute along foundation ditch circumference, the concrete pile is the prefab, and spaced apart formation steel sheet pile installation interval between the adjacent concrete pile, the concrete pile is located steel sheet pile installation interval one side and is equipped with vertical slot on the surface, be equipped with the steel sheet pile in the steel sheet pile installation interval, peg graft on two adjacent concrete piles in the vertical slot of both sides of steel sheet pile.
2. An underground excavation supporting construction based on an existing building according to claim 1, wherein the steel sheet pile is provided with an arch portion that is arched toward an outside of the excavation in a horizontal direction.
3. An underground excavation supporting construction based on an existing building according to claim 2, wherein the arch portion includes a first steel wall plate, a second steel wall plate having one end connected to one end of the first steel wall plate, and a third steel wall plate having one end connected to the other end of the first steel wall plate, and a distance between the second steel wall plate and the third steel wall plate becomes gradually larger from the end where the second steel wall plate is connected to the first steel wall plate to the other end.
4. An underground foundation pit supporting structure based on an existing building according to claim 3, wherein the steel sheet pile further comprises a first connecting steel sheet having one end connected to the other end of the second steel wall plate and a second connecting steel sheet having one end connected to the other end of the third steel wall plate; and the other end of the first connecting steel plate is inserted into the vertical slot of one concrete pile, and the other end of the second connecting steel plate is inserted into the vertical slot of the other concrete pile.
5. An underground excavation supporting construction based on an existing building according to claim 4, wherein the first steel wall plate, the second steel wall plate, the third steel wall plate, the first connecting steel plate and the second connecting steel plate are integrally formed together.
6. An underground foundation pit supporting structure based on an existing building according to claim 1, 2, 3, 4 or 5, wherein two reinforcing steel plates are fixed on the surface of the concrete pile on one side of the steel sheet pile installation interval, the reinforcing steel plates shield the notch of the vertical slot to form a clamping edge, a steel sheet pile insertion opening is formed between the two reinforcing steel plates, hook heads located in the vertical slot are arranged on two sides of the steel sheet pile in the horizontal direction, and the hook heads are matched with the clamping edge to prevent the steel sheet pile from being separated from the vertical slot through the steel sheet pile insertion opening.
7. An underground excavation supporting construction based on existing buildings according to claim 6, wherein the reinforced steel plate is cast together with the concrete piles.
8. An underground foundation pit supporting structure based on an existing building according to claim 6, wherein a plurality of steel supporting rods are pre-embedded at the lower ends of the concrete piles, slots are formed in the upper surfaces of the steel supporting rods and extend in a direction perpendicular to the distribution direction of two adjacent concrete piles, the lower ends of the reinforcing steel plates are inserted into the slots and supported on the steel supporting rods, and the upper ends of the reinforcing steel plates are detachably connected with the concrete piles.
9. An underground foundation pit supporting structure based on an existing building according to claim 8, wherein the steel supporting rods on two opposite sides of the concrete are fixedly connected together in a one-to-one correspondence mode, the reinforced steel plates on two opposite sides of the concrete are sleeved at two ends of the connecting screw rod, one end of the connecting screw rod is in threaded connection with a first nut, the other end of the connecting screw rod is in threaded connection with a second nut, the reinforced steel plate is located between the first nut and the second nut, and the reinforced steel plate is abutted to the concrete pile under the clamping effect of the first nut and the second nut.
10. An underground supporting structure of foundation pit based on existing building as claimed in claim 9, wherein there is an operation gap between the connecting screw and the upper end face of the concrete pile for the connecting piece to pass through when lifting the reinforced steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122863081.6U CN216615864U (en) | 2021-11-22 | 2021-11-22 | Underground foundation pit supporting structure based on existing building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122863081.6U CN216615864U (en) | 2021-11-22 | 2021-11-22 | Underground foundation pit supporting structure based on existing building |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216615864U true CN216615864U (en) | 2022-05-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122863081.6U Active CN216615864U (en) | 2021-11-22 | 2021-11-22 | Underground foundation pit supporting structure based on existing building |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216615864U (en) |
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2021
- 2021-11-22 CN CN202122863081.6U patent/CN216615864U/en active Active
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