CN214530688U - Adjacent deep basal pit supporting construction - Google Patents
Adjacent deep basal pit supporting construction Download PDFInfo
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- CN214530688U CN214530688U CN202120250109.6U CN202120250109U CN214530688U CN 214530688 U CN214530688 U CN 214530688U CN 202120250109 U CN202120250109 U CN 202120250109U CN 214530688 U CN214530688 U CN 214530688U
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Abstract
The utility model relates to an adjacent deep basal pit supporting construction, including two sets of triaxial stirring pile bodies, two sets of the earth mass both sides that imbed respectively in the soil mass both sides between two adjacent deep basal pits respectively the triaxial stirring pile body, two sets of imbed respectively in the bored concrete pile body of the soil mass both sides between two adjacent deep basal pits and scarf joint in retaining pile body between triaxial stirring pile body and the bored concrete pile body, it is two sets of triaxial stirring pile body is located two sets of between the bored concrete pile body, triaxial stirring pile body forms stagnant water curtain, every group the bored concrete pile body comprises the bored concrete pile of a plurality of equal interval distributions, all installs the enhancement stake between two adjacent bored concrete piles, the enhancement stake is worn to locate two sets of triaxial stirring pile bodies and fixed connection on another group's bored concrete pile body. The method has the effect of improving the bearing capacity of the soil body between the adjacent deep foundation pits.
Description
Technical Field
The application relates to the technical field of building construction, in particular to an adjacent deep foundation pit supporting structure.
Background
With the acceleration of urbanization process, urban construction land is increasingly tense, and the distance between a deep foundation pit supporting structure of a super high-rise building and a part of high-rise buildings and a ground red line edge is narrow. The CBD development center situation in the high-end building concentration is particularly obvious. It is common for narrow soil strips to remain between two foundation pits.
Chinese patent No. CN 204023578U discloses a double row pile supporting structure, which includes front row piles, rear row piles, front pile top crown beams connected to the top ends of the front row piles, rear pile top crown beams connected to the top ends of the rear row piles, connecting beams connected between the front pile top crown beams and the rear pile top crown beams, and a reinforcing soil body between the front row piles and the rear row piles; the spatial portal type supporting structure is formed by mutually connecting a front row of piles, a rear row of piles, a front pile top crown beam, a rear pile top crown beam, a reinforced soil body and a connecting beam connecting piece.
With respect to the related art, the inventors consider that the following drawbacks exist: the soil strips between adjacent foundation pits are relatively narrow, the elastic modulus of the soil body in the region is relatively small, the soil body is easily compressed and deformed, the stress of the soil body is unstable, the bearing capacity of the soil body is low, and the soil strips between the adjacent foundation pits need to be reinforced.
SUMMERY OF THE UTILITY MODEL
In order to consolidate the soil body between the adjacent deep basal pit, improve the bearing capacity of the soil body between the adjacent deep basal pit, this application provides an adjacent deep basal pit supporting construction.
The application provides an adjacent deep basal pit supporting construction adopts following technical scheme:
the utility model provides an adjacent deep basal pit supporting construction, includes two sets of triaxial stirring pile bodies, two sets of embedding respectively in the soil body both sides between two adjacent deep basal pits of the triaxial stirring pile body both sides between two adjacent deep basal pits and scarf joint in keep off the soil pile body between triaxial stirring pile body and the filling pile body, it is two sets of triaxial stirring pile body is located two sets of between the filling pile body, triaxial stirring pile body forms stagnant water curtain, every group the filling pile body comprises the drilling bored concrete pile of interval distribution such as a plurality of roots, all installs the enhancement stake between two adjacent drilling bored concrete piles, it wears to locate two sets of triaxial stirring pile bodies and fixed connection on another group of filling pile body to strengthen the stake.
Through adopting above-mentioned technical scheme, the retaining pile body imbeds and forms retaining wall between triaxial stirring pile body and the bored concrete pile body, on the one hand, reduce the soil body and take place the possibility of soil erosion and water loss, on the other hand, improve the factor of safety when constructor walks on the soil body, the bored concrete pile body plays the reinforcement guard action to the soil body, the bored concrete pile body supports and leans on in the retaining pile body, play certain supporting role to the retaining pile when supporting the soil body, triaxial stirring pile body forms the stagnant water curtain, effectively prevent the foundation ditch infiltration, all install the reinforcement pile between two adjacent drilling bored concrete piles, improve the bored concrete pile body that is located the soil body both sides, the connection structure intensity of triaxial stirring pile body, thereby effectively improve the bearing capacity of the soil body between the adjacent deep basal pit.
Preferably, the upper portion of bored concrete pile body is provided with the collar tie beam, the reinforced pile is the opening setting for cavity setting and both ends, wears to be equipped with the steel strand wires in the reinforced pile, the both ends of reinforced pile all are equipped with anchor disc, the both ends of steel strand wires correspond fixed connection in anchor disc, and two anchor discs are fixed connection respectively in the collar tie beam on two sets of bored concrete pile bodies.
By adopting the technical scheme, the reinforcing pile is penetrated with the steel strand and is fixedly connected with the ring beam on the cast-in-place pile body through the anchor plate, so that the purpose of locking the cast-in-place pile bodies positioned on two sides of the soil body is realized, the anti-overturning force of the cast-in-place pile bodies is further improved, and the stability of the supporting structure is enhanced.
Preferably, the retaining pile body comprises a retaining steel pipe pile embedded between the cast-in-place pile body and the triaxial mixing pile body and a retaining crown beam positioned at the top of the retaining steel pipe pile.
Through adopting above-mentioned technical scheme, keep off native steel-pipe pile and inlay between triaxial stirring pile body and bored concrete pile body, have sufficient bending resistance, locate the fender native crown beam at fender native steel-pipe pile top and play firm effect, prevent to keep off native steel-pipe pile and take place the displacement, prevent that the soil body landing from in the foundation ditch.
Preferably, a split screw rod is inserted between the two retaining steel pipe piles, a split nut in threaded connection with the split screw rod is arranged on the opposite outer side of the retaining steel pipe pile, and the split nut abuts against the side wall of the retaining steel pipe pile.
Through adopting above-mentioned technical scheme, be provided with between two sets of retaining pile bodies and to drawing the screw rod and carry out the lock solid through drawing the nut, improve the antidumping power of retaining pile body, further strengthen supporting construction's stability.
Preferably, the counter-pulling screw rods are provided with a plurality of counter-pulling screw rods which are distributed at equal intervals along the length direction of the soil body, the counter-pulling screw rods are positioned above the soil body, and steel plates are paved on the counter-pulling screw rods.
By adopting the technical scheme, the steel plate is paved on the soil body, on one hand, the possibility of water and soil loss of the soil body is reduced, and on the other hand, the constructors can walk on the soil body conveniently.
Preferably, the soil mass stirring device further comprises a single-amplitude stirring pile body vertically embedded in the soil mass, and the amplitude stirring pile body is positioned between the two groups of soil retaining pile bodies.
By adopting the technical scheme, the single stirring pile body vertically embedded into the soil body forms the box-shaped section to increase the rigidity of the soil body, increase the comprehensive elastic modulus of the soil body, reduce the compression deformation of the soil body and improve the bearing capacity of the soil body.
Preferably, single stirring pile body includes that two sets of vertical first cement pile bodies and the horizontal second cement pile bodies of arranging between two sets of triaxial stirring pile bodies of arranging of multiunit are along equal interval distribution of soil body length direction, first cement pile body, second cement pile body constitute by a plurality of cement piles, arbitrary cement pile all imbeds with the pile body of other cement piles that this cement pile is adjacent, first cement pile body and second cement pile body all are located the top of reinforced pile.
Through adopting above-mentioned technical scheme, first cement stake is arranged along soil body circumference and is set up, form confined inoxidizing coating in the soil body periphery, the reinforcing protection to the soil body, reduce the possibility that takes place the soil body and run off, many second cement stakes are arranged along soil body width direction and are set up and constitute the second cement stake body, multiunit second cement stake body is arranged along soil body length direction interval, the rigidity of reinforcing soil body, arbitrary cement stake is scarf joint each other and is arranged, increase the comprehensive elastic modulus of the soil body, the bearing capacity of reinforcing soil body.
Preferably, a non-woven fabric is arranged above the soil body.
By adopting the technical scheme, the non-woven fabric is paved on the soil body, so that the possibility of water and soil loss of the soil body is further reduced.
In summary, the present application includes at least one of the following beneficial technical effects:
the soil retaining pile body is embedded between the three-axis stirring pile body and the cast-in-place pile body to form a soil retaining wall, the cast-in-place pile body plays a role in reinforcing and protecting a soil body, the cast-in-place pile body abuts against the soil retaining pile body to support the soil body and play a certain supporting role for the soil retaining pile at the same time, the three-axis stirring pile body forms a water-stop curtain to effectively prevent water seepage of a foundation pit, reinforcing piles are arranged between every two adjacent cast-in-place piles, the strength of a connecting structure of the cast-in-place pile body and the three-axis stirring pile body on two sides of the soil body is improved, and therefore the bearing capacity of the soil body between every two adjacent deep foundation pits is effectively improved;
a split screw is arranged between the two groups of retaining pile bodies and is locked by a split nut, so that the anti-overturning force of the retaining pile bodies is improved, and the stability of a supporting structure is further enhanced;
the steel plate is laid on the soil body, so that on one hand, the possibility of water and soil loss of the soil body is reduced, and on the other hand, the construction personnel can walk on the soil body conveniently.
Drawings
Fig. 1 is a schematic view of the overall structure of an adjacent deep foundation pit supporting structure.
Fig. 2 is a schematic structural view of a single stirring pile body.
Fig. 3 is a schematic structural view of a reinforcing pile and a cast-in-place pile body.
Fig. 4 is a schematic structural view of a steel plate and a counter screw.
Description of reference numerals: 1. a soil body; 11. non-woven fabrics; 2. a triaxial mixing pile body; 3. pouring a pile body; 31. a ring beam; 3a, drilling a cast-in-place pile; 4. a soil retaining pile body; 41. soil retaining steel pipe piles; 42. a soil retaining crown beam; 43. oppositely pulling the screw rod; 44. oppositely pulling the nut; 5. a single-amplitude stirring pile body; 51. a first cement pile body; 52. a second cement pile body; 61. reinforcing piles; 62. steel strand wires; 63. an anchor disc; 7. a steel plate; 71. a butting block; 72. and (4) mounting the groove.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
The embodiment of the application discloses adjacent deep basal pit supporting construction, refer to fig. 1, including two sets of triaxial stirring pile bodies 2 who imbeds respectively in the soil body 1 both sides between two adjacent deep basal pits, two sets of bored concrete pile bodies 3 who imbeds respectively in the soil body 1 both sides between two adjacent deep basal pits, scarf joint in the fender soil pile body 4 between triaxial stirring pile body 2 and bored concrete pile body 3 and vertically imbed in the single stirring pile body 5 of soil body 1, triaxial stirring pile body 2 forms the waterproof curtain.
Referring to fig. 2, the single mixing pile 5 is located between two sets of retaining piles 4, the single mixing pile 5 includes two sets of first cement piles 51 longitudinally arranged between the two sets of triaxial mixing piles 2 and a plurality of sets of second cement piles 52 transversely arranged between the two sets of first cement piles 51, and the second cement piles 52 are equally spaced along the length direction of the soil body 1. The first cement pile body 51 and the second cement pile body 52 are formed by a plurality of cement piles, and any one cement pile is embedded into the pile bodies of other cement piles adjacent to the cement pile to form an occlusive pile.
Referring to fig. 1 and 3, two sets of triaxial mixing pile bodies 2 are located between two sets of cast-in-place pile bodies 3, each set of cast-in-place pile body 3 is composed of a plurality of cast-in-place bored piles 3a distributed at equal intervals, and a ring beam 31 is arranged at the upper part of each cast-in-place bored pile 3 a. All install the reinforced pile 61 that is located first cement pile body 51 and second cement pile body 52 below between two adjacent drilling bored concrete piles 3a, reinforced pile 61 wears to locate two sets of triaxial stirring pile bodies 2, keep off soil pile body 4 and fixed connection on another group's bored concrete pile body 3. The reinforced pile 61 is the opening setting for cavity setting and both ends, wears to be equipped with steel strand wires 62 in the reinforced pile 61, and the both ends of reinforced pile 61 all are equipped with anchor disc 63, and the both ends of steel strand wires 62 correspond fixed connection in anchor disc 63, and two anchor disc 63 are fixed connection in the collar tie beam 31 on two sets of bored concrete pile bodies 3 respectively.
Referring to fig. 1, the soil 1 is provided with a nonwoven fabric 11 located above the single agitating pile 5, and the nonwoven fabric 11 is located between the two sets of soil retaining piles 4. Each group of retaining pile bodies 4 includes a retaining steel pipe pile 41 embedded between the cast-in-place pile body 3 and the triaxial mixing pile body 2 and a retaining crown beam 42 positioned at the top of the retaining steel pipe pile 41, a split screw 43 is inserted between two opposite retaining steel pipe piles 41, a split nut 44 connected with the split screw 43 through threads is arranged on the opposite outer side of the retaining steel pipe pile 41, and the split nut 44 abuts against the side wall of the retaining steel pipe pile 41.
Referring to fig. 4, a plurality of counter-pulling screws 43 are arranged and distributed at equal intervals along the length direction of the soil body 1, the counter-pulling screws 43 are positioned above the soil body 1, and steel plates 7 are laid on the counter-pulling screws 43. A pair of abutting blocks 71 distributed along the length direction of the steel plate 7 is fixedly connected to the lower end surface of the steel plate 7, an installation groove 72 for embedding the split screw 43 is formed in the lower end surface of the abutting block 71, and the lower end surface of the abutting block 71 abuts against the non-woven fabric 11.
The implementation principle of the adjacent deep foundation pit supporting structure in the embodiment of the application is as follows: retaining pile body 4 imbeds and forms retaining wall between triaxial stirring pile body 2 and bored concrete pile body 3, on the one hand, reduce the possibility that soil mass 1 takes place soil erosion, on the other hand, improve the factor of safety when constructor walks on soil mass 1, bored concrete pile body 3 plays the reinforcement guard action to soil mass 1, bored concrete pile body 3 supports and leans on in retaining pile body 4, play certain supporting role to the retaining pile when supporting soil mass 1, triaxial stirring pile body 2 forms the stagnant water curtain, effectively prevent the foundation ditch infiltration, all install reinforced pile 61 between two adjacent drilling bored concrete piles 3a, improve the bored concrete pile body 3 that is located soil mass 1 both sides, the connection structure intensity of triaxial stirring pile body 2, thereby effectively improve the bearing capacity of soil mass 1 between the adjacent deep basal pit.
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 (8)
1. The utility model provides an adjacent deep basal pit supporting construction which characterized in that: the construction method comprises two groups of triaxial mixing pile bodies (2) which are respectively embedded into two sides of a soil body (1) between two adjacent deep foundation pits, two groups of cast-in-place pile bodies (3) which are respectively embedded into two sides of the soil body (1) between two adjacent deep foundation pits and soil retaining pile bodies (4) which are embedded between the triaxial mixing pile bodies (2) and the cast-in-place pile bodies (3), wherein the triaxial mixing pile bodies (2) are positioned between the two groups of cast-in-place pile bodies (3), the triaxial mixing pile bodies (2) form a waterproof curtain, each group of cast-in-place pile bodies (3) consists of a plurality of cast-in-place piles (3a) which are distributed at equal intervals, reinforcing piles (61) are respectively arranged between two adjacent cast-in-place piles (3a), and the reinforcing piles (61) penetrate through the two groups of mixing pile bodies (2) and are fixedly connected to another group of cast-in-place pile bodies (3); the upper portion of bored concrete pile body (3) is provided with circle roof beam (31), reinforced pile (61) are the opening setting for cavity setting and both ends, wear to be equipped with steel strand wires (62) in reinforced pile (61), the both ends of reinforced pile (61) all are equipped with anchor plate (63), fixed connection in anchor plate (63) is corresponded at the both ends of steel strand wires (62), and two anchor plate (63) are circle roof beam (31) on two sets of bored concrete pile bodies (3) of fixed connection respectively.
2. An adjacent deep foundation pit supporting structure according to claim 1, wherein: the soil-retaining pile body (4) comprises a soil-retaining steel pipe pile (41) embedded between the cast-in-place pile body (3) and the triaxial mixing pile body (2) and a soil-retaining crown beam (42) positioned at the top of the soil-retaining steel pipe pile (41).
3. An adjacent deep foundation pit supporting structure according to claim 2, wherein: opposite-pulling screw rods (43) penetrate between the two retaining steel pipe piles (41), opposite outer sides of the retaining steel pipe piles (41) are provided with opposite-pulling nuts (44) in threaded connection with the opposite-pulling screw rods (43), and the opposite-pulling nuts (44) are abutted to the side walls of the retaining steel pipe piles (41).
4. An adjacent deep foundation pit supporting structure according to claim 3, wherein: the oppositely-pulling screw rods (43) are arranged in a plurality of equal-interval distribution along the length direction of the soil body (1), the oppositely-pulling screw rods (43) are located above the soil body (1), and steel plates (7) are laid on the oppositely-pulling screw rods (43).
5. An adjacent deep foundation pit supporting structure according to claim 4, wherein: the lower terminal surface fixedly connected with butt piece (71) of steel sheet (7), mounting groove (72) that confession split screw (43) were inlayed and are established are seted up to the lower terminal surface of butt piece (71).
6. An adjacent deep foundation pit supporting structure according to claim 1, wherein: the soil mass retaining device is characterized by further comprising a single-amplitude stirring pile body (5) vertically embedded into the soil mass (1), wherein the single-amplitude stirring pile body (5) is located between the two groups of soil retaining pile bodies (4).
7. An adjacent deep foundation pit supporting structure according to claim 6, wherein: single stirring pile body (5) are including two sets of vertical first cement pile body (51) of arranging between two sets of triaxial stirring pile bodies (2) and the horizontal second cement pile body (52) of arranging between two sets of first cement pile bodies (51) of multiunit, second cement pile body (52) are along equal interval distribution of soil body (1) length direction, first cement pile body (51), second cement pile body (52) comprise a plurality of cement stake, arbitrary cement stake all imbeds with the pile body of the adjacent other cement stake of this cement stake, first cement pile body (51) and second cement pile body (52) all are located the top of reinforced pile (61).
8. An adjacent deep foundation pit supporting structure according to claim 1, wherein: and a non-woven fabric (11) is arranged above the soil body (1).
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| CN202120250109.6U CN214530688U (en) | 2021-01-28 | 2021-01-28 | Adjacent deep basal pit supporting construction |
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| CN202120250109.6U CN214530688U (en) | 2021-01-28 | 2021-01-28 | Adjacent deep basal pit supporting construction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113897973A (en) * | 2021-11-02 | 2022-01-07 | 中建八局第四建设有限公司 | Mutual-pulling type foundation pit support structure and construction method |
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- 2021-01-28 CN CN202120250109.6U patent/CN214530688U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113897973A (en) * | 2021-11-02 | 2022-01-07 | 中建八局第四建设有限公司 | Mutual-pulling type foundation pit support structure and construction method |
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