Structure for reducing settlement of peripheral soil body resisted by peripheral pipe pile of basement

Abstract

The utility model discloses a structure for reducing peripheral soil settlement resistance of a basement peripheral pipe pile, which relates to the technical field of buildings and comprises a prefabricated concrete pipe and a prefabricated reinforced concrete plate. A sand filling area, a coincidence area, an earthwork area and a reserved settlement cavity are arranged around the upper portion of the waste pipe pile. The fluidity of sand is larger than that of earthwork, after the prefabricated concrete pipe is inserted into the sand filling area, the sand located outside the prefabricated concrete pipe can effectively enter the reserved settlement cavity in the prefabricated concrete pipe during ground settlement, and the prefabricated concrete pipe can effectively settle along with the surrounding earthwork; earthwork above the precast concrete pipe is also settled synchronously, and settlement of surrounding soil is reduced and resisted; therefore, the problem that the ground is uneven or cracks due to the fact that the ground settlement speed of existing waste tower cranes, passenger and goods elevators and other building foundation pipe piles is inconsistent with the ground of surrounding municipal garden supporting facilities is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of building, especially relates to a structure for reducing the resistance of surrounding soil settlement of basement peripheral pipe pile. BACKGROUND

[0002] In most of the current construction, before the construction of the main building, pipe piles for bearing tower cranes are needed to be built outside the foundation of the main building, and then the tower crane foundation is poured on the pipe piles. After the main building starts to stack, the tower crane is installed on the tower crane foundation. After the completion of the main building, the tower crane will be dismantled, and then the tower crane foundation will be broken. However, the pipe piles buried deep underground cannot be removed.

[0003] After the completion of the main building, the surrounding land will be developed into gardens, green belts, sidewalks or squares. The abandoned tower crane pipe piles that have not been removed will be buried under the concrete ground base of the developed gardens, green belts, sidewalks or squares.

[0004] With the periodic pressure of rainwater, ground and soil flow, the ground of the developed gardens will settle. However, due to the presence of abandoned tower crane pipe piles in some areas, the bearing capacity of the areas with pipe pile foundation is high, and the settlement speed is inconsistent with the settlement speed of the surrounding ground, which may cause uneven ground, cracking or collapse.

[0005] Therefore, for the municipal garden supporting facilities around the building, it is particularly important to prevent the inconsistent settlement speed of the abandoned tower crane pipe pile foundation and the surrounding square and road, which may affect the normal use of the square and road.

[0006] In summary, the existing technology has at least the following technical problems:

[0007] The ground settlement speed of the existing abandoned tower crane pipe pile foundation is inconsistent with the ground settlement speed of the surrounding municipal garden supporting facilities, which may cause uneven ground or cracking. UTILITY MODEL CONTENT

[0008] The utility model aims to provide a structure for reducing the resistance of surrounding soil settlement of basement peripheral pipe pile to solve the problem of inconsistent ground settlement speed of the existing abandoned tower crane pipe pile foundation and the surrounding municipal garden supporting facilities, which may cause uneven ground or cracking.

[0009] The preferred technical solutions in many technical solutions provided by the utility model can produce many technical effects, which are described below.

[0010] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0011] The utility model provides a kind of to reduce basement peripheral pipe pile resistance surrounding soil settlement structure, including prefabricated concrete pipe and prefabricated reinforced concrete slab;In the vertical direction, in the upper region of the pipe pile of abandonment, sand-filled area is provided, the sand-filled area surrounds the upper portion of the pipe pile, and the top end surface of the sand-filled area is flush with the top end surface of the pipe pile;The prefabricated concrete pipe is sleeved on the pipe pile, and the bottom of the prefabricated concrete pipe is inserted into the sand-filled area, and the bottom of the prefabricated concrete pipe and the upper portion of the pipe pile are provided with coincident area in the vertical direction;The top end surface of the pipe pile to the top end surface of the prefabricated concrete pipe is reserved settlement cavity;The vertical height of the reserved settlement cavity is greater than the vertical height of the coincident area;The prefabricated reinforced concrete slab is capped on the top end surface of the prefabricated concrete pipe;And outside the prefabricated concrete pipe, the coincident area is set up earthwork area upwards, and the earthwork area surrounds the prefabricated reinforced concrete slab;The reserved settlement cavity is used to provide the pipe pile with reserved settlement space, so that the settlement speed of the pipe pile above ground is consistent with the settlement speed of the surrounding ground of the pipe pile.

[0012] In one embodiment, the horizontal plane coverage area of the sand-filled area is 3-5 times the cross-sectional area of the pipe pile.

[0013] In one embodiment, the sand-filled area provides a friction coefficient of not less than 0.45 for the inner wall or outer wall of the prefabricated concrete pipe or the outer wall of the pipe pile.

[0014] In one embodiment, the sand in the sand-filled area is medium-coarse sand.

[0015] In one embodiment, the diameter of the prefabricated concrete pipe is at least 2 times the diameter of the pipe pile.

[0016] In one embodiment, the prefabricated reinforced concrete slab is square or circular in shape.

[0017] In one embodiment, the horizontal plane area of the prefabricated reinforced concrete slab is 1.5-2 times the cross-sectional area of the prefabricated concrete pipe.

[0018] In one embodiment, the prefabricated concrete pipe is a prefabricated concrete drainage pipe.

[0019] In one embodiment, the vertical height of the prefabricated concrete pipe is at least 4-6 times the vertical height of the coincident area.

[0020] The utility model has the following beneficial effects:

[0021] The basement peripheral pipe pile resistance surrounding soil subsidence structure has multiple advantages, can effectively solve the problem that the ground subsidence speed of the abandoned tower crane pipe pile foundation and the ground subsidence speed of the surrounding municipal garden supporting facilities are inconsistent, and causes uneven ground or cracking phenomenon.

[0022] Firstly, the structure sets a sand filling area in the upper area of the abandoned pipe pile, the sand filling area surrounds the upper part of the pipe pile, and the top end face of the sand filling area is flush with the top end face of the pipe pile. The bottom of the prefabricated concrete pipe is inserted into the sand filling area, and an overlapping area is formed between the upper part of the pipe pile and the prefabricated concrete pipe. Because the fluidity of sand is greater than that of earthwork, after the prefabricated concrete pipe is inserted into the sand filling area, when the ground subsides, the sand outside the prefabricated concrete pipe can effectively enter the prefabricated concrete pipe, and the prefabricated concrete pipe can effectively subside, thereby providing space for the subsidence of the earthwork above the prefabricated concrete pipe.

[0023] Moreover, the existence of the sand filling area forms a good bearing structure between the pipe pile and the prefabricated concrete pipe, and further enhances the stability of the whole basement peripheral pipe pile resistance surrounding soil subsidence structure.

[0024] In addition, the sand in the sand filling area enters between the pipe pile and the prefabricated concrete pipe, and the sand in the overlapping area can contact the wall surface of the pipe pile and the prefabricated concrete pipe in the vertical direction, which helps to increase the friction force on the wall surface of the pipe pile and the prefabricated concrete pipe, and can increase the additional support force of the prefabricated concrete pipe, thereby improving the bearing capacity of the structure, so that the position of the prefabricated concrete pipe can remain stable when the soil under the prefabricated concrete pipe does not subside.

[0025] More importantly, the reserved subsidence cavity between the top end face of the prefabricated concrete pipe and the top end face of the pipe pile provides sufficient subsidence space, so that the prefabricated concrete pipe and the earthwork above it have a buffer zone during the subsidence process, and the earthwork above the prefabricated concrete pipe can smoothly follow the synchronous subsidence of the earthwork under the surrounding ground, thereby reducing the resistance to surrounding soil subsidence, and reducing the influence of the abandoned pipe pile on the square, ground and road above. The design of the reserved subsidence cavity ensures that the subsidence speed of the ground bearing the earthwork above the pipe pile and the surrounding ground is consistent, and reduces the risk of ground cracking and unstable structure caused by uneven subsidence.

[0026] Overall, the basement peripheral pipe pile resistance surrounding soil subsidence structure design comprehensively considers subsidence balance, structural stability and environmental adaptability, effectively improves the consistency of the ground subsidence speed of the abandoned tower crane pipe pile foundation and the ground subsidence speed of the surrounding municipal garden supporting facilities, and avoids the problem of uneven ground or local cracking.

[0027] In summary, the unique design of the anti-settling structure can significantly reduce the ground problems of the surrounding municipal garden supporting facilities caused by ground settlement differences, so that the surrounding municipal garden supporting facilities and the ground are stable, and the anti-settling structure is suitable for engineering scenes with high requirements for foundation stability and has wide popularization and application value. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the present application, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0029] Figure 1 is a sectional view of the basement peripheral pipe pile resistance surrounding soil settlement structure of the present application.

[0030] Among them, the signs are as follows:

[0031] 1, prefabricated concrete pipe;

[0032] 2, prefabricated reinforced concrete slab;

[0033] 3, sand filling area;

[0034] 4, coincident area;

[0035] 5, reserved settlement cavity;

[0036] 6, earthwork area;

[0037] 7, pipe pile;

[0038] 8, ground. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application.

[0040] The specific embodiment provides a basement peripheral pipe pile resistance surrounding soil settlement structure, which effectively solves the problem that the ground settlement speed of the existing abandoned tower crane pipe pile foundation is inconsistent with the ground settlement speed of the surrounding municipal garden supporting facilities, resulting in uneven ground or cracking phenomenon.

[0041] In addition, the entire content of the following embodiment is not limited to the solution of the present application as recited in the claims.

[0042] The first embodiment of the basement peripheral pipe pile resistance surrounding soil settlement structure is as follows: Figure 1As shown, including prefabricated concrete pipe 1 and prefabricated reinforced concrete slab 2; in the vertical direction, in the upper region of the abandoned pipe pile 7 set sand filling area 3, sand filling area 3 surrounds the upper part of the pipe pile 7, the top end surface of the sand filling area 3 flush with the top end surface of the pipe pile 7; the prefabricated concrete pipe 1 is sleeved on the pipe pile 7, and the bottom of the prefabricated concrete pipe 1 is inserted into the sand filling area 3, and the bottom of the prefabricated concrete pipe 1 and the upper part of the pipe pile 7 are vertically arranged with the overlapping area 4; the top end surface of the pipe pile 7 to the top end surface of the prefabricated concrete pipe 1 is the reserved settlement cavity 5; the vertical height of the reserved settlement cavity 5 is greater than the vertical height of the overlapping area 4; the prefabricated reinforced concrete slab 2 is capped on the top end surface of the prefabricated concrete pipe 1; and outside the prefabricated concrete pipe 1, the overlapping area 4 is provided with the earthwork area 6 upwards, and the earthwork area 6 surrounds the prefabricated reinforced concrete slab 2; the reserved settlement cavity 5 is used to provide the pipe pile 7 with a reserved settlement space, so that the settlement speed of the pipe pile 7 above the ground 8 is consistent with the settlement speed of the pipe pile 7 around the ground 8.

[0043] The basement peripheral pipe pile resistance surrounding soil settlement structure of the utility model has multiple advantages, which can effectively solve the problem that the ground 8 settlement speed of the abandoned tower crane pipe pile 7 foundation is inconsistent with the ground 8 settlement speed of the surrounding municipal garden supporting facilities, and causes uneven or cracking phenomenon of the ground 8.

[0044] Firstly, the structure sets the sand filling area 3 in the upper region of the abandoned pipe pile 7, and the sand filling area 3 surrounds the upper part of the pipe pile 7 and makes the top end surface flush with the top end surface of the pipe pile 7. And the bottom of the prefabricated concrete pipe 1 is inserted into the sand filling area 3, and the overlapping area 4 is formed between the upper part of the pipe pile 7 and the prefabricated concrete pipe 1. Because the fluidity of sand is greater than that of earthwork, after the prefabricated concrete pipe 1 is inserted into the sand filling area 3, when the ground 8 settles, the sand outside the prefabricated concrete pipe 1 can effectively enter the prefabricated concrete pipe 1, and the prefabricated concrete pipe 1 can effectively settle, providing space for the settlement of the earthwork above the prefabricated concrete pipe 1.

[0045] And the existence of the sand filling area 3 forms a good bearing structure between the pipe pile 7 and the prefabricated concrete pipe 1, further enhancing the stability of the entire basement peripheral pipe pile resistance surrounding soil settlement structure.

[0046] In addition, the sand in the sand filling area 3 enters between the pipe pile 7 and the prefabricated concrete pipe 1 through the overlapping area 4, and the sand in the overlapping area 4 can contact the wall surface of the pipe pile 7 and the prefabricated concrete pipe 1 in the vertical direction, which helps to increase the friction on the wall surface of the pipe pile 7 and the prefabricated concrete pipe 1, and can provide additional support for the prefabricated concrete pipe 1, thereby improving the carrying capacity of the structure, so that when the soil under the prefabricated concrete pipe 1 does not settle, the position of the prefabricated concrete pipe 1 can remain stable.

[0047] More importantly, the reserved settlement cavity 5 between the top end face of the precast concrete pipe 1 and the top end face of the pipe pile 7 provides sufficient settlement space, so that the precast concrete pipe 1 and the earthwork above it have a buffer zone during the settlement process, and the earthwork above the precast concrete pipe 1 can smoothly follow the synchronous settlement of the earthwork under the surrounding ground 8, thereby reducing the resistance to the surrounding soil settlement, and reducing the influence of the abandoned pipe pile 7 on the square, ground 8 and road above. The design of this reserved settlement cavity 5 ensures that the settlement speed of the ground 8 bearing the earthwork above the pipe pile 7 and the surrounding ground 8 is consistent, reducing the risk of ground 8 cracking and structural instability caused by uneven settlement.

[0048] Overall, the structure design of reducing the resistance of the basement peripheral pipe pile to the surrounding soil settlement comprehensively considers settlement balance, structural stability and environmental adaptability, effectively improves the consistency of the settlement speed of the ground 8 of the abandoned tower crane pipe pile 7 foundation and the settlement speed of the ground 8 of the surrounding municipal garden supporting facilities, and avoids the problem of uneven ground 8 or local cracking.

[0049] In summary, the unique design of the anti-settlement structure can significantly reduce the problems of the surrounding municipal garden supporting facilities and ground 8 caused by the difference in ground 8 settlement, making the surrounding municipal garden supporting facilities and ground 8 stable, suitable for engineering scenes with high requirements for foundation stability, and has wide application value.

[0050] As one of the optional embodiments,

[0051] The specific size of the sand filling area 3 is that the horizontal plane coverage area of the sand filling area 3 is 3-5 times the cross-sectional area of the pipe pile 7.

[0052] In application, the precast concrete pipe 1 is inserted into the sand filling area 3, and the sand filling area 3 provides vertical upward normal support force for the end of the precast concrete pipe 1.

[0053] Regarding the lateral support force that the sand between the outer wall of the precast concrete pipe 1, the outer wall of the pipe pile 7 and the inner wall of the precast concrete pipe 1 can provide through friction, the friction coefficient provided by the sand filling area 3 for the inner wall or outer wall of the precast concrete pipe 1 or the outer wall of the pipe pile 7 is not less than 0.45.

[0054] Specifically, the sand in the sand filling area 3 is medium-coarse sand.

[0055] In application, the coarseness of the sand can control the friction force that the sand between the outer wall of the precast concrete pipe 1, the outer wall of the pipe pile 7 and the inner wall of the precast concrete pipe 1 can generate, and can also control the speed of the sand in the sand filling area 3 entering the reserved settlement cavity 5 in the precast concrete pipe 1 during the settlement of the ground 8, thereby affecting the settlement speed of the earthwork above the precast reinforced concrete slab 2 and the ground 8.

[0056] The vertical height of the prefabricated concrete pipe 1 is at least 4-6 times the vertical height of the coincident area 4. The higher the coincident area 4, the larger the area of the sand filling area 3 in contact with the prefabricated concrete pipe 1, and the greater the lateral friction provided by the coincident area 4 for the prefabricated concrete pipe 1.

[0057] Further, in order to reserve a large enough settlement cavity 5, the diameter of the prefabricated concrete pipe 1 is at least 2 times the diameter of the pipe pile 7.

[0058] In application, the larger prefabricated concrete pipe 1 allows a larger range of ground 8 to be covered, and reduces the prominence of the excess area of the area where the pipe pile 7 exists and the surrounding area when the surrounding ground 8 settles; and the larger prefabricated concrete pipe 1 reserves a larger settlement cavity 5, which can prolong the consistency of the settlement of the ground 8 in the area where the pipe pile 7 exists and the surrounding area.

[0059] Regarding the arrangement of the prefabricated reinforced concrete slab 2 described above, the prefabricated reinforced concrete slab 2 is square or circular in shape.

[0060] The horizontal area of the prefabricated reinforced concrete slab 2 is 1.5-2 times the cross-sectional area of the prefabricated concrete pipe 1.

[0061] In application, since the prefabricated reinforced concrete slab 2 covers the top of the prefabricated concrete pipe 1, it prevents the reserved settlement cavity 5 from entering the soil and ensures the space of the reserved settlement cavity 5; and the horizontal area of the prefabricated reinforced concrete slab 2 determines the area of the ground 8 that the prefabricated concrete pipe 1 bears; in order to make the prefabricated concrete pipe 1 bear force evenly and keep the settlement speed of the prefabricated concrete pipe 1 and the bottom surface of the surrounding area stable during settlement, the area of the prefabricated reinforced concrete slab 2 is controlled to be 1.5-2 times the cross-sectional area of the prefabricated concrete pipe 1.

[0062] The second embodiment of the structure for reducing the resistance of the basement peripheral pipe pile to the settlement of the surrounding soil, which is different from the first embodiment, is that the prefabricated concrete pipe 1 is a concrete prefabricated drainage pipe.

[0063] In application, the concrete prefabricated drainage pipe can be used as the prefabricated concrete pipe 1 in the structure for reducing the resistance of the basement peripheral pipe pile to the settlement of the surrounding soil, which makes it more flexible and convenient to obtain the prefabricated concrete pipe 1 and the prefabricated reinforced concrete slab 2 assembly in construction projects.

[0064] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described.

Claims

1. A structure for reducing the resistance of a basement peripheral pipe pile to peripheral soil settlement, characterized in that, it comprises a prefabricated concrete pipe and a prefabricated reinforced concrete slab; a sand-filled area is arranged in the upper region of the abandoned pipe pile in the vertical direction, the sand-filled area surrounds the upper part of the pipe pile, and the top end surface of the sand-filled area is flush with the top end surface of the pipe pile; the prefabricated concrete pipe is sleeved outside the pipe pile, and the bottom of the prefabricated concrete pipe is inserted into the sand-filled area, and the bottom of the prefabricated concrete pipe and the upper part of the pipe pile are arranged with an overlapping area in the vertical direction; a reserved settlement cavity is formed between the top end surface of the pipe pile and the top end surface of the prefabricated concrete pipe; the vertical height of the reserved settlement cavity is greater than the vertical height of the overlapping area; the prefabricated reinforced concrete slab is capped on the top end surface of the prefabricated concrete pipe; and outside the prefabricated concrete pipe, a soil area is arranged above the overlapping area, and the soil area surrounds the prefabricated reinforced concrete slab; the reserved settlement cavity is used to provide a reserved settlement space for the pipe pile, so that the settlement speed of the pipe pile above the ground is consistent with the settlement speed of the peripheral ground of the pipe pile.

2. The basement peripheral tube pile settlement resisting structure according to claim 1, wherein The horizontal plane coverage area of the sand-filled area is 3-5 times the cross-sectional area of the pipe pile.

3. The basement peripheral tube pile settlement resisting structure according to claim 1, wherein The friction coefficient provided by the sand-filled area for the inner wall or outer wall of the prefabricated concrete pipe or the outer wall of the pipe pile is not less than 0.

45.

4. The basement peripheral tube pile settlement resisting structure according to claim 3, wherein The sand in the sand-filled area is medium-coarse sand.

5. The basement peripheral tube pile settlement resisting structure according to claim 1, wherein The diameter of the prefabricated concrete pipe is at least 2 times the diameter of the pipe pile.

6. The basement peripheral tube pile settlement resisting structure according to claim 1, wherein The prefabricated reinforced concrete slab is square or circular in shape.

7. The basement peripheral tube pile settlement resisting structure according to claim 6, wherein The horizontal plane area of the prefabricated reinforced concrete slab is 1.5-2 times the cross-sectional area of the prefabricated concrete pipe.

8. The structure of claim 1, wherein, The prefabricated concrete pipe is a prefabricated concrete drainage pipe.

9. The structure of claim 1, wherein, The vertical height of the prefabricated concrete pipe is at least 4-6 times the vertical height of the overlapping area.

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