CN210288333U

CN210288333U - Deep foundation treatment structure

Info

Publication number: CN210288333U
Application number: CN201921125305.XU
Authority: CN
Inventors: 沈锋良; 陆胜洪
Original assignee: Hangzhou Linrun Construction Co Ltd
Current assignee: Hangzhou Linrun Construction Co Ltd
Priority date: 2019-07-17
Filing date: 2019-07-17
Publication date: 2020-04-10
Anticipated expiration: 2029-07-17

Abstract

The utility model relates to a deep foundation treatment structure, join in marriage gravel layer, lime bed course and concrete layer including foundation pile, plain soil layer, level, foundation pile and plain soil layer, level join in marriage gravel layer, lime bed course, concrete layer and intersect perpendicularly, and plain soil layer, level join in marriage gravel layer, lime bed course, concrete layer and arrange from bottom to top in proper order, and adjacent foundation pile is connected with the connecting pile, the connecting pile is located plain soil layer and level and joins in marriage between the gravel layer. Through the setting of gradation gravel layer, lime soil bed course, concrete layer, the bearing capacity of ground has been improved. Because adjacent foundation piles are connected into a whole through the connecting piles, the overall stability of the foundation piles is enhanced, when the foundation is transversely vibrated, the foundation piles are not easy to deform or even misplace, and the upper-layer building is prevented from being damaged.

Description

Deep foundation treatment structure

Technical Field

The utility model belongs to the technical field of the ground processing technique and specifically relates to a deep ground processing structure is related to.

Background

The foundation is a soil layer below the bottom surface of the foundation, which is subjected to a building load transmitted from the foundation to generate stress and strain. In many cases, many buildings have to be built on soft foundations, and before building construction on the soft foundations, consolidation treatment needs to be performed on the soft foundations, so foundation improvement is one of the natural treatment measures to be considered.

When deep foundation is treated, the foundation pile is driven to transfer the load of the upper building to the soil layer with strong deep bearing capacity, so that the rigidity of the foundation is improved. The soft soil layer has poor support performance and poor bearing capacity, and because a plurality of foundation piles are not connected, the overall stability of the foundation piles is poor, and when the foundation is subjected to transverse vibration, an upper-layer building is easily damaged.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a deep foundation treatment structure, it improves the holistic connection stability of foundation pile, improves the bearing capacity of ground.

The above object of the present invention can be achieved by the following technical solutions:

the deep foundation treatment structure comprises foundation piles, a plain soil layer, a graded sandstone layer, an ash soil cushion layer and a concrete layer, wherein the foundation piles are vertically intersected with the plain soil layer, the graded sandstone layer, the ash soil cushion layer and the concrete layer, the plain soil layer, the graded sandstone layer, the ash soil cushion layer and the concrete layer are sequentially arranged from bottom to top, adjacent foundation piles are connected with connecting piles, and the connecting piles are located between the plain soil layer and the graded sandstone layer.

Through adopting above-mentioned technical scheme, through the setting of gradation gravel layer, lime soil bed course, concrete layer, improved the bearing capacity of ground. Because adjacent foundation piles are connected into a whole through the connecting piles to form a three-dimensional net-shaped structure, the overall stability of the foundation piles is enhanced, the foundation piles cannot deform or even be dislocated when the foundation is transversely vibrated, and an upper building is prevented from being damaged.

The utility model discloses further set up to: be equipped with the reinforcing bar hoop in the connecting pile, the reinforcing bar hoop is placed along connecting pile length direction.

Through adopting above-mentioned technical scheme, the connecting pile is concrete placement stake, and the reinforcing bar hoop can strengthen the structural strength of connecting pile.

The utility model discloses further set up to: be equipped with the jack on the lateral wall of foundation pile, it has connecting reinforcement to peg graft in the jack, connecting reinforcement passes through iron wire and reinforcing bar hoop fixed connection.

Through adopting above-mentioned technical scheme, strengthened the connection stability of connecting pile and foundation pile tie point for the tie point of connecting pile and foundation pile can not split easily.

The utility model discloses further set up to: the diameter of the connecting pile is smaller than that of the foundation pile.

Through adopting above-mentioned technical scheme, the connecting pile plays the holistic effect of connecting adjacent foundation pile, does not directly provide the support to the ground, does not need too big diameter, can reduce cost.

The utility model discloses further set up to: the thickness of the lime soil cushion layer is 200-300 mm.

Through adopting above-mentioned technical scheme, the lime soil bed course can provide good holding power, and tamp easily.

The utility model discloses further set up to: the particle size of the broken stone of the graded sandstone layer is less than 50 mm.

By adopting the technical scheme, gaps among the broken stones are small, the broken stones are easy to tamp, and the compactness is high.

The utility model discloses further set up to: the lower end of the foundation pile is provided with a cone, and the cone is located in the plain soil layer.

Through adopting above-mentioned technical scheme, ram into the soil layer with the foundation pile easily.

To sum up, the utility model discloses following beneficial effect has:

1. through the setting of gradation gravel layer, lime soil bed course, concrete layer, the bearing capacity of ground has been improved. Because adjacent foundation piles are connected into a whole through the connecting piles, the overall stability of the foundation piles is enhanced, when the foundation is transversely vibrated, the foundation piles are not easy to deform or even misplace, and the upper-layer building is prevented from being damaged.

2. Through the setting of reinforcing bar hoop and connecting reinforcement, strengthened the structural strength of connecting pile to and the connection stability of connecting pile and foundation pile tie point.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is an enlarged schematic view of a portion a in fig. 1.

In the figure: 1. foundation piles; 11. a pyramid part; 12. a jack; 2. a plain soil layer; 3. a graded sandstone layer; 4. a lime soil cushion layer; 5. a concrete layer; 6. connecting reinforcing steel bars; 7. connecting piles; 8. and reinforcing the steel bar hoop.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, for the utility model discloses a deep foundation treatment structure, including foundation pile 1, plain soil layer 2, level join in marriage gravel layer 3, lime soil bed course 4 and concrete layer 5, plain soil layer 2, level join in marriage gravel layer 3, lime soil bed course 4, concrete layer 5 arrange from bottom to top in proper order.

The graded gravel layer 3 adopts natural graded broken stones, the grain diameter of the broken stones is less than 50mm, fine sand is adopted, and the graded gravel material cannot contain organic impurities such as grass root garbage and the like during laying. The thickness of the graded sandstone layer 3 is 800mm, the graded sandstone layer is compacted in a layering mode, and the thickness of each layer of compacted sandstone layer is smaller than 150 mm. The graded sand stone layer 3 can improve the bearing capacity of the shallow foundation layer below the bottom surface of the foundation, generally, the occupied proportion of the settlement of the shallow foundation layer is larger, and the graded sand stone layer 3 can reduce the settlement of the shallow foundation layer.

The lime-soil cushion layer 4 is formed by uniformly mixing lime and cohesive soil according to the volume mixing ratio of 3:7 (lime: soil) and then tamping in layers, wherein the thickness of the lime-soil layer is 300mm, the lime-soil layer is paved in two layers, the thickness of each layer is 150mm, and after one layer is paved, the other layer is paved in a rammed manner. The lime soil cushion layer 4 can balance the load of the foundation pile 1 and the soil between piles and can bear the load together. Concrete layer 5 is cast with concrete having a strength grade of C10, and concrete layer 5 has a thickness of 100 mm.

The foundation pile 1 is vertically intersected with a plain soil layer 2, a graded sand stone layer 3, an ash soil cushion layer 4 and a concrete layer 5, the diameter of the foundation pile 1 is 700mm, a cone 11 is arranged at the lower end of the foundation pile 1, and the cone 11 is located in a soft soil layer. The adjacent foundation piles 1 are connected with connecting piles 7, the connecting piles 7 are located between the plain soil layer 2 and the graded sandstone layer 3, and the diameters of the connecting piles 7 are smaller than those of the foundation piles 1. Be provided with jack 12 on the lateral wall of foundation pile 1, jack 12 has a plurality ofly, and it has connecting reinforcement 6 to peg graft in the 12 interpolation of jack, and connecting reinforcement 6 is the L type, is provided with reinforcing bar hoop 8 in the connecting pile 7, and reinforcing bar hoop 8 places along 7 length direction of connecting pile, and reinforcing bar passes through iron wire and connecting reinforcement 6 hoop fixed connection. Through the setting of reinforcing bar hoop 8 and connecting reinforcement 6, strengthened the structural strength of connecting pile 7 to and the connection stability of connecting pile 7 and foundation pile 1 tie point.

The implementation principle of the embodiment is as follows: through the setting of gradation gravel layer 3, lime soil bed course 4, concrete layer 5, the bearing capacity of ground has been improved. Because adjacent foundation piles 1 are connected into a whole through connecting piles 7, the overall stability of the foundation piles 1 is enhanced, when the foundation is transversely vibrated, the foundation piles 1 are not easy to deform or even misplace, and the damage to an upper building is avoided.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. Deep ground handles structure, its characterized in that: including foundation pile (1), plain soil layer (2), level join in marriage gravel layer (3), grey soil bed course (4) and concrete layer (5), foundation pile (1) and plain soil layer (2), level join in marriage gravel layer (3), grey soil bed course (4), concrete layer (5) are crossing perpendicularly, and plain soil layer (2), level join in marriage gravel layer (3), grey soil bed course (4), concrete layer (5) are arranged from bottom to top in proper order, and adjacent foundation pile (1) is connected with connecting pile (7), connecting pile (7) are located between plain soil layer (2) and level join in marriage gravel layer (3).

2. The deep foundation treatment structure of claim 1, wherein: be equipped with reinforcing bar hoop (8) in connecting pile (7), reinforcing bar hoop (8) are placed along connecting pile (7) length direction.

3. The deep foundation treatment structure of claim 2, wherein: be equipped with jack (12) on the lateral wall of foundation pile (1), it has connecting reinforcement (6) to peg graft in jack (12), connecting reinforcement (6) are through iron wire and reinforcing bar hoop (8) fixed connection.

4. A deep foundation treatment structure according to claim 3, wherein: the diameter of the connecting pile (7) is smaller than that of the foundation pile (1).

5. The deep foundation treatment structure of claim 1, wherein: the thickness of the lime soil cushion layer (4) is 200 mm and 300 mm.

6. The deep foundation treatment structure of claim 1, wherein: the particle size of the broken stone of the graded sandstone layer (3) is less than 50 mm.

7. The deep foundation treatment structure of claim 1, wherein: the lower end of the foundation pile (1) is provided with a cone part (11), and the cone part (11) is located in the plain soil layer (2).