CN214783967U - Engineering pile and building envelope combined type buttress soil retaining structure system - Google Patents

Engineering pile and building envelope combined type buttress soil retaining structure system Download PDF

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Publication number
CN214783967U
CN214783967U CN202120127558.1U CN202120127558U CN214783967U CN 214783967 U CN214783967 U CN 214783967U CN 202120127558 U CN202120127558 U CN 202120127558U CN 214783967 U CN214783967 U CN 214783967U
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basement
counterfort
bottom plate
foundation pit
force transmission
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CN202120127558.1U
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沈瑞宏
赵新
汤友生
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China United Engineering Corp Ltd
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China United Engineering Corp Ltd
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Abstract

The utility model provides an engineering stake and envelope convolution counterfort retaining structure system, the structure atress is reasonable, the reliability is high, can use forever, and combines together with foundation ditch envelope, can be suitable for the retaining structure system of deeper foundation ditch. The utility model comprises an enclosure structure, a buttress structure, an engineering pile, a basement structure and a structural cushion layer; the structural cushion layer is positioned between the enclosing structures and above the engineering piles; the counterfort structure comprises a counterfort plate, and the counterfort plate is positioned at the outer side of the basement structure; the counterfort structure also comprises a force transmission bottom plate, the force transmission bottom plate is arranged on the structural cushion layer, and the basement structure is arranged on the force transmission bottom plate; reinforcing steel bars are embedded in the enclosure structure and the engineering piles; the force transmission bottom plate is fixedly connected with the steel bars at the top of the engineering pile, and two sides of the force transmission bottom plate are fixedly connected with the steel bars in the enclosure structure; the buttress plate is fixedly connected with a steel bar in the enclosure structure; the building envelope, the counterfort structure and the engineering pile are poured into a whole.

Description

Engineering pile and building envelope combined type buttress soil retaining structure system
Technical Field
The utility model relates to an engineering stake and envelope convolution counterfort retaining structure system.
Background
At present, as a deep foundation pit supporting structure, a fender pile (wall) such as a cast-in-place pile, an underground diaphragm wall and the like is widely applied to engineering practice. Besides being suitable for cantilever type fender post (wall) structures, the fender system is usually two systems of fender post (wall) + anchor structure and fender post (wall) + inner support structure, and the cantilever type fender post (wall) structure is only suitable for shallow foundation pits due to large bending moment and deformation of the cantilever type fender post (wall) structure; the fender pile (wall) + anchor structure is usually greatly limited in application in cities due to the condition of a ground red line and a soil layer; the fender pile (wall) + inner support structure system, its inner support generally is as a temporary structure, after the basement construction finishes the inner support and demolishs, still need to utilize basement structure bottom plate, medium plate, roof and side wall to bear outside soil and water pressure. However, in practical engineering, there are still many situations that the basement exterior wall cannot be directly utilized to bear water and soil pressure, and especially, equipment or buildings sensitive to ground vibration often cannot directly utilize the basement exterior wall as a force transmission component to bear external water and soil pressure. Therefore, there is a need for improvements and optimizations to existing containment systems without affecting the arrangement of basement structures.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the above-mentioned not enough that exists among the prior art, and provide a reasonable in structural design's engineering stake and envelope convolution counterfort retaining structure system, the structure atress is reasonable, the reliability is high, can use forever, and combines together with foundation ditch envelope, can be suitable for the retaining structure system of deeper foundation ditch.
The utility model provides a technical scheme that above-mentioned problem adopted is: a kind of project pile and retaining structure conjunctive counterfort retaining structure system, including retaining structure, counterfort structure, project pile, basement structure and structural cushion; the structural cushion layer is positioned between the enclosing structures and above the engineering piles; the counterfort structure comprises a counterfort plate, and the counterfort plate is positioned at the outer side of the basement structure; the method is characterized in that: the counterfort structure also comprises a force transmission bottom plate, the force transmission bottom plate is arranged on the structural cushion layer, and the basement structure is arranged on the force transmission bottom plate; reinforcing steel bars are embedded in the enclosure structure and the engineering piles; the force transmission bottom plate is fixedly connected with the steel bars at the top of the engineering pile, and two sides of the force transmission bottom plate are fixedly connected with the steel bars in the enclosure structure; the buttress plate is fixedly connected with a steel bar in the enclosure structure; the building envelope, the counterfort structure and the engineering pile are poured into a whole.
The utility model also comprises a foundation pit support; during construction, a foundation pit support is fixed on the enclosure structure; after the building envelope, the counterfort structure and the engineering pile are poured into a whole, the foundation pit support is removed.
Foundation ditch support including first foundation ditch support, second way foundation ditch support and third way foundation ditch support, first foundation ditch support, second way foundation ditch support, third way foundation ditch support from top to bottom sets gradually.
Basement structure include basement bottom plate, basement side wall, basement medium plate and basement roof.
The utility model discloses still include the isolator, the isolator sets up between biography power bottom plate and basement structure.
The utility model discloses the space packing between basement structure and counterfort structure has loose material.
Pass power bottom plate be plate concrete structure or strip reinforced concrete structure.
Compared with the prior art, the utility model, have following advantage and effect:
1. the conventional fender post (wall) + inner support structural system is adopted in the foundation pit excavation construction stage, so that the stability of the foundation pit excavation is guaranteed, the surrounding environment is protected, and the construction safety is guaranteed. After the foundation pit is excavated to the bottom of the pit, the reinforcing steel bars embedded in the enclosure structure are utilized to construct the counterfort structure, so that the counterfort plates and the force transmission bottom plate in the counterfort structure are firmly connected with the enclosure system, the integral stress is realized, the resource waste caused by the fact that the enclosure structure is only used as a temporary structure under the excavation working condition is avoided, and meanwhile, the increase of engineering cost caused by the reconstruction of a basement structure is reduced.
2. The enclosure structure and the engineering pile connected with the counterfort structure system can respectively transmit the horizontal and vertical component forces of the outside water and soil pressure to the force transmission bottom plate and the engineering pile, so that the reasonability of the structure system in stress is ensured, and the problem that the force transmission of the outer wall and the floor slab of the basement structure cannot be utilized due to the dismantling of the support is solved. The reasonable force transmission system ensures the safety of the surrounding environment under the working condition of long-term use.
3. The counterfort structure is avoided from the support in the plane and the vertical direction, construction can be carried out when a foundation pit is excavated to the bottom of the pit, the counterfort structure can be simultaneously constructed when a force transmission bottom plate is constructed, the support in the enclosure structure does not need to be dismantled, and after the counterfort structure is constructed, a complete stress system can be formed with the enclosure structure and the engineering pile and can bear external water and soil pressure, the internal support system can be completely dismantled, the influence of the internal support on the construction of the basement structure can be reduced, so that the construction progress of the basement structure is greatly accelerated, and the construction period is shortened.
4. The vibration isolator is arranged between the force transmission bottom plate and the basement structure, so that the basement can be isolated from an external vibration environment, the relatively independent space environment of the basement is guaranteed, excellent vibration isolation and shock isolation effects can be achieved, and the safety and reliability of the basement or equipment sensitive to vibration are guaranteed.
Drawings
Fig. 1 is a plan view of the present invention.
Fig. 2 is a schematic sectional structure diagram in the embodiment of the present invention.
Fig. 3 is a schematic sectional structure diagram of the first step of the embodiment of the present invention.
Fig. 4 is a schematic sectional structure diagram of the second step of the embodiment of the present invention.
Fig. 5 is a schematic sectional structure diagram in the third step of the embodiment of the present invention.
Fig. 6 is a schematic sectional view of the fourth step of the embodiment of the present invention.
Fig. 7 is a schematic sectional view of the fifth step of the embodiment of the present invention.
Fig. 8 is a schematic sectional view of the sixth step in the construction of the embodiment of the present invention.
Fig. 9 is a schematic sectional view of the seventh step of the embodiment of the present invention.
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.
The utility model discloses an envelope 1, counterfort structure 2, engineering stake 3, isolator 4, foundation ditch support 6, basement structure 7 and structural cushion 8.
The enclosure structure is a retaining wall, a retaining pile or other supporting and blocking structures for foundation pit enclosure.
During construction, the foundation pit support 6 is fixed on the building enclosure 1. The foundation pit support 6 comprises a first foundation pit support 6.1, a second foundation pit support 6.2 and a third foundation pit support 6.3, wherein the first foundation pit support 6.1, the second foundation pit support 6.2 and the third foundation pit support 6.3 are sequentially arranged from top to bottom. After the building envelope 1, the counterfort structure 2 and the engineering pile 3 are poured into a whole, the foundation pit support 6 is removed.
The structural cushion layer 8 is positioned between the building envelopes 1 and above the engineering piles 3.
And reinforcing steel bars are embedded in the enclosure structure 1 and the engineering piles 3. The reinforcing steel bars can be pre-embedded in the building envelope 1 and the engineering piles 3, and pre-embedding construction can be carried out in a reinforcing steel bar connector mode.
The counterfort structure 2 comprises a force transmission bottom plate 2.1 and a counterfort plate 2.2.
The force transmission bottom plate 2.1 is arranged on the structural cushion layer 8 and is fixedly connected with the steel bars at the top of the engineering pile 3; two sides of the force transmission bottom plate 2.1 are fixedly connected with the steel bars in the building envelope 1. The buttress plate 2.2 is fixedly connected with the steel bars in the enclosure structure 1. The building enclosure 1, the counterfort structure 2 and the engineering pile 3 are poured into a whole to form a stable stress system, and bear external water and soil pressure together, and at the moment, the upper foundation pit support 6 can be dismantled without bearing the external water and soil pressure through the basement 7. The enclosure structure 1 can be used as a temporary enclosure structure in the stage of foundation pit excavation, and can also form a permanent retaining structure system together with the post-cast buttress structure 2. The force transmission bottom plate 2.1 is of a plate-shaped concrete structure or a strip-shaped reinforced concrete structure, the strip-shaped reinforced concrete structure is consistent with the plane position of the wall supporting plate 2.2, external water and soil loads can be transmitted, an outer waterproof layer is arranged outside the underground chamber, and an anti-pulling engineering pile is arranged below the strip-shaped reinforced force transmission bottom plate and a non-reinforced area bottom plate, so that the anti-floating and waterproof requirements of a foundation pit are met.
The basement structure 7 is arranged on the force transmission bottom plate 2.1. Basement structure 7 includes basement bottom plate 7.1, basement side wall 7.2, basement medium plate 7.3 and basement roof 7.4. The buttress plate 2.2 is located on the outside of the basement structure 7. The basement structure 7 can be self-waterproof by means of the structure, a waterproof layer can be arranged on the outer side of the basement structure 7, and a pump room is arranged between the basement structure 7 and the counterfort structure 2 to perform water leakage and drainage on the outer side of the basement.
Isolator 4 sets up between biography power bottom plate 2.1 and basement bottom plate 7.1, and independent setting guarantees basement vibration isolation effect. The performance of the vibration isolator 4 is determined according to relevant use requirements, and the vibration isolator is reliably connected with the force transmission bottom plate 2.1 and the basement bottom plate 7.1 and is provided with a limiting device.
The space between the basement structure 7 and the buttress structure 2 is filled with loose material.
The utility model discloses construction method includes following step:
the first step is as follows: constructing the envelope structure 1 and the engineering pile 3 in the soil layer by using related construction machinery according to the actual engineering situation;
the second step is that: after construction is finished and foundation pit excavation conditions are met, excavating a soil body 5 in the foundation pit in a layered mode according to actual conditions, and constructing a first foundation pit support 6.1, a second foundation pit support 6.2 and a third foundation pit support 6.3 from top to bottom in sequence until the foundation pit is excavated to the designed elevation of the bottom of the foundation pit; wherein, excavate a layer soil body 5, correspond the construction and support a foundation ditch.
The third step: constructing a structural cushion layer 8, chiseling out the steel bars at the top of the engineering pile 3 and the steel bars in the building envelope 1; connecting the force transmission bottom plate 2.1 with the steel bars at the top of the engineering pile 3, and fixedly connecting the two sides of the force transmission bottom plate 2.1 with the steel bars in the building enclosure 1; the buttress plate 2.2 is connected with the steel bar in the enclosure structure 1;
the fourth step: the building enclosure structure 1, the counterfort structure 2 and the engineering pile 3 are poured into a whole, and the upper foundation pit support 6 with the designed strength can be removed;
the fifth step: and a vibration isolator 4 is installed at the designated position on the upper part of the force transmission bottom plate 2.1, and a basement bottom plate 7.1, a basement side wall 7.2, a basement middle plate 7.3 and a basement top plate 7.4 are constructed in sequence. The foundation pit supports 6 can be sequentially dismantled and the basement structure 7 can be built back in sections, one foundation pit support 6 is dismantled, and a section of the basement structure 7 is built back; the whole 6 parts of the foundation pit support can be dismantled at one time, and then the whole basement is built again.
And a sixth step: according to actual needs, the gap between the basement 7 and the counterfort structure 2 is backfilled by loose materials or other fillers with vibration isolation effect, and the ground is restored.
In addition, it should be noted that the specific embodiments described in the present specification may be different in the components, the shapes of the components, the names of the components, and the like, and the above description is only an example of the structure of the present invention. All the equivalent changes or simple changes made according to the structure, characteristics and principle of the utility model are included in the protection scope of the utility model. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.

Claims (7)

1. A kind of project pile and retaining structure conjunctive counterfort retaining structure system, including retaining structure, counterfort structure, project pile, basement structure and structural cushion; the structural cushion layer is positioned between the enclosing structures and above the engineering piles; the counterfort structure comprises a counterfort plate, and the counterfort plate is positioned at the outer side of the basement structure; the method is characterized in that: the counterfort structure also comprises a force transmission bottom plate, the force transmission bottom plate is arranged on the structural cushion layer, and the basement structure is arranged on the force transmission bottom plate; reinforcing steel bars are embedded in the enclosure structure and the engineering piles; the force transmission bottom plate is fixedly connected with the steel bars at the top of the engineering pile, and two sides of the force transmission bottom plate are fixedly connected with the steel bars in the enclosure structure; the buttress plate is fixedly connected with a steel bar in the enclosure structure; the building envelope, the counterfort structure and the engineering pile are poured into a whole.
2. The project pile and envelope combination buttress soil retaining structure system of claim 1, wherein: the foundation pit support is also included; during construction, a foundation pit support is fixed on the enclosure structure; after the building envelope, the counterfort structure and the engineering pile are poured into a whole, the foundation pit support is removed.
3. The project pile and envelope combination buttress soil retaining structure system of claim 2, wherein: the foundation pit support comprises a first foundation pit support, a second foundation pit support and a third foundation pit support, wherein the first foundation pit support, the second foundation pit support and the third foundation pit support are sequentially arranged from top to bottom.
4. The project pile and envelope combination buttress soil retaining structure system of claim 1, wherein: the basement structure comprises a basement bottom plate, basement side walls, a basement middle plate and a basement top plate.
5. The project pile and envelope combination buttress soil retaining structure system of claim 1, wherein: still include the isolator, the isolator sets up between biography power bottom plate and basement structure.
6. The project pile and envelope combination buttress soil retaining structure system of claim 1, wherein: the gap between the basement structure and the buttress structure is filled with loose material.
7. The project pile and envelope combination buttress soil retaining structure system of claim 1, wherein: the force transmission bottom plate is of a plate-shaped concrete structure or a strip-shaped reinforced concrete structure.
CN202120127558.1U 2021-01-18 2021-01-18 Engineering pile and building envelope combined type buttress soil retaining structure system Active CN214783967U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202120127558.1U CN214783967U (en) 2021-01-18 2021-01-18 Engineering pile and building envelope combined type buttress soil retaining structure system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202120127558.1U CN214783967U (en) 2021-01-18 2021-01-18 Engineering pile and building envelope combined type buttress soil retaining structure system

Publications (1)

Publication Number Publication Date
CN214783967U true CN214783967U (en) 2021-11-19

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202120127558.1U Active CN214783967U (en) 2021-01-18 2021-01-18 Engineering pile and building envelope combined type buttress soil retaining structure system

Country Status (1)

Country Link
CN (1) CN214783967U (en)

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