CN211472603U - Composite foundation mattress layer - Google Patents

Abstract

The utility model relates to a composite foundation cushion layer, comprising soil between piles, a building foundation arranged on the soil between the piles, a cushion layer and a pile foundation arranged between the soil between the piles and the building foundation, and the pile foundation is vertically arranged The lower end of the pile foundation is set in the soil between the piles, and the upper end of the pile foundation passes through the upper surface of the soil between the piles and the cushion layer and is fixed with the building foundation; The upper surface of the soil between the cornerstone and the pile is fixed, and the water-retaining cornerstone is arranged around the mattress; the side wall of the water-retaining cornerstone close to the mattress is fixed with a plywood made of Teflon, and the building foundation is close to the water-retaining cornerstone. The bottom of the side wall is poured and fixed with a stainless steel sheet, and the stainless steel sheet is attached and offset with the side wall of the plywood close to the building foundation. The utility model has the effect of preventing rainwater from penetrating into the cushion layer, preventing rainwater erosion from causing soil loss between the cushion layer and the pile, and improving the stability of the building foundation.

Description

A composite foundation mattress

technical field

The utility model relates to the technical field of building construction, in particular to a composite foundation mattress.

Background technique

Cushion layer is a method to solve the uneven foundation in CFG composite foundation. For example, when the building is on the rock foundation and the clay foundation at the same time, it is solved by adding a mattress layer on the rock foundation. The cushion layer is not only used for CFG piles, but also for gravel piles, pipe piles, etc., to form a composite foundation and ensure the joint action of the pile and the soil between the piles. As one of the means to deal with soft soil foundation, CFG pile composite foundation has been widely used in civil engineering in my country in recent years. In the design of composite foundation, a cushion layer composed of a certain thickness of bulk granular material and geogrid is set between the foundation and the pile and the soil between the piles, which is a core technology of the composite foundation. Whether a mattress layer is installed under the foundation has a great influence on the stress of the composite foundation. If the cushion layer is not set, the bearing characteristics of the composite foundation are similar to those of the pile foundation, and the soil bearing capacity between the piles is difficult to exert, so it cannot become a composite foundation. The cushion layer is set under the foundation, and the soil load between the piles does not depend solely on the settlement of the piles. Even if the pile ends fall on a good soil layer, the load can be guaranteed to act on the soil between the piles through the cushion layer, so that the piles The soil shares the load.

At present, the utility model patent with the publication number CN204151808U discloses a mattress layer and a composite foundation, wherein the mattress layer includes a rigid mattress layer and a flexible mattress layer, and the flexible mattress layer is located on the side of the rigid mattress layer. above. The mattress layer includes a rigid mattress layer and a flexible mattress layer. The composite foundation pile and soil are integrated through the rigid mattress layer of the lower layer, which can better exert the joint bearing capacity of the pile and soil, and lay flexible mattresses on the rigid mattress layer. The mattress layer can avoid the rigid contact between the reinforced concrete foundation and the pile body and the rigid mattress layer, so that the composite foundation has a better shock absorption effect.

The prior art scheme in the above has the following defects: the cushion layer is difficult to prevent external rainwater from infiltrating between the foundation and the soil between the piles, and the waterproof effect is not good, and it is easy to cause soil loss between the cushion layer and the pile, thereby affecting the construction of the foundation. stability.

Utility model content

Aiming at the deficiencies of the prior art, one of the purposes of the present invention is to provide a composite foundation mattress, which has the effect of preventing rainwater from penetrating into the mattress, preventing rainwater erosion from causing soil loss between the mattress and the pile , to improve the stability of the building foundation.

The above-mentioned utility model purpose of the present utility model is achieved through the following technical solutions:

A composite foundation cushion layer, comprising soil between piles, a building foundation arranged on the soil between the piles, a cushion layer and a pile foundation arranged between the soil between the piles and the building foundation, the pile foundation is vertically arranged, and the lower end of the pile foundation It is arranged in the soil between the piles, and the upper end of the pile foundation passes through the upper surface of the soil between the piles and the cushion layer and is fixed with the building foundation; The foundation stone and the upper surface of the soil between the piles are fixed, and the water-retaining foundation stone is arranged around the mattress layer; the side wall of the water-retaining foundation stone close to the mattress layer is fixed with a polytetrafluoroethylene A laminated board, a stainless steel sheet is cast and fixed at the bottom of the side wall of the building foundation close to the water-retaining cornerstone, and the stainless steel sheet is attached and abutted against the side wall of the laminated board close to the building foundation.

By adopting the above technical solution, when the load on the building foundation changes, the building foundation will produce a small amount of settlement relative to the soil between the piles. At this time, the slippage between the laminated plate and the stainless steel sheet releases the gap between the water-retaining foundation stone and the building foundation. When there is rainy weather around the building foundation, the rainwater accumulates on the periphery of the building foundation. At this time, the water-retaining foundation stone prevents rainwater from invading between the building foundation and the pile. In the cushion layer between the soil, the soil erosion between the cushion layer and the piles caused by rainwater erosion is prevented, and the stability of the building foundation is improved.

In a preferred example of the present invention, it can be further configured as follows: a water-resisting layer made of pvc material is embedded in the water-retaining cornerstone, and the water-resisting layer is vertically arranged and along the surrounding direction of the water-retaining cornerstone extend.

By adopting the above technical solution, the water barrier layer is made of PVC material, which has excellent water barrier performance, blocks the penetration of rainwater to the water-retaining cornerstone, and improves the impermeability of the water-retaining cornerstone.

In a preferred example of the present invention, it can be further configured as follows: the water-retaining cornerstone is provided with a fixing column, the fixing column horizontally penetrates the water-retaining cornerstone, and one end of the fixing column and the water-retaining cornerstone are far away from the building foundation The side wall of the cladding plate is flush, and the other end is in contact with the side wall of the cladding board away from the building foundation; the cladding plate is provided with a fastening bolt, and the end of the fastening bolt passes through the side of the cladding plate close to the building foundation. The wall penetrates into one end face of the fixing post close to the adhering plate, and the fastening bolt is screwed with the fixing post.

By adopting the above technical solution, when the fastening bolts are tightened, the lamination plate is fixed with the fixing column, and the fixing column is poured and fixed with the water-retaining foundation stone, so that the laminating plate and the water-retaining foundation stone are fixed, which solves the problem of being made of polytetrafluoroethylene. The problem that the adhesiveness of the laminated board is not enough and it is difficult to be fixed with the water-retaining cornerstone.

In a preferred example of the present invention, a countersunk groove is formed on the side wall of the laminating plate close to the stainless steel sheet, and the head of the fastening bolt is arranged in the countersunk groove.

By adopting the above technical solution, the head of the fastening bolt is arranged in the countersunk groove to prevent the head of the fastening bolt from protruding from the cling plate and affecting the sliding fit between the cling plate and the stainless steel sheet.

In a preferred example of the present invention, it can be further configured that: the side wall of the water-retaining foundation stone close to the mattress layer is integrally formed with built-in stones distributed around the mattress layer, and the built-in stone and the mattress layer are integrally formed. The edges are against each other, and a waterproof filler made of water-expandable rubber is arranged between the built-in stone and the building foundation.

By adopting the above technical solution, when the rainwater enters the upper side of the built-in stone through the space between the laminated plate and the stainless steel sheet, the waterproof filler contacts the rainwater and expands, filling the gap between the built-in stone and the building foundation, preventing further rainwater infiltration.

In a preferred example of the present invention, it can be further configured as follows: an insulating layer made of polyurethane rigid foam is embedded in the built-in stone.

By adopting the above technical solution, the heat insulation layer is arranged to enhance the heat insulation property of the built-in stone and reduce the influence of temperature change on the structure of the mattress pad.

In a preferred example of the present invention, a rubber strip is fixed on the top of the water-retaining foundation stone, and the rubber strip is arranged around the building foundation and abuts against the side wall of the building foundation.

By adopting the above technical solution, the rubber strips are arranged around the building foundation and are offset against the building foundation, so that it is difficult for rainwater to penetrate between the laminated board and the stainless steel sheet through the rubber strips.

In a preferred example of the present invention, a lower sealing groove is formed on the upper surface of the soil between the piles, and an anti-seepage layer formed by pouring fine stone concrete is poured in the lower sealing groove. The layer is fixed to the bottom surface of the water-retaining foundation stone, and the lower sealing groove extends along the surrounding direction of the water-retaining foundation stone.

By adopting the above technical solution, the infiltration of rainwater through the soil between the piles toward the cushion layer is reduced.

To sum up, the present utility model includes at least one of the following beneficial technical effects:

When there is rainy weather around the building foundation, the rainwater accumulates on the peripheral side of the building foundation. At this time, the water-retaining cornerstone blocks the rainwater from invading the cushion layer between the building foundation and the soil between the piles, thereby preventing rainwater erosion from causing the cushion layer and the pile to be damaged. Soil loss between piles improves the stability of building foundations;

The setting of the water barrier blocks the infiltration of rainwater to the water-retaining cornerstone and improves the impermeability of the water-retaining cornerstone;

The infiltration of rainwater through the soil between the piles towards the mattress layer is reduced.

Description of drawings

FIG. 1 is a schematic structural diagram of an embodiment.

FIG. 2 is a partial enlarged schematic view of part A in FIG. 1 .

Reference signs: 1. Soil between piles; 11. Lower sealing groove; 12. Impermeable layer; 2. Building foundation; 21. Stainless steel sheet; 3. Pile foundation; 4. Cushion layer; , Waterproof layer; 52, Laminated board; 521, Countersunk head groove; 522, Fastening bolt; 53, Fixed column; 531, Fixed block; 54, Rubber strip; 6, Built-in stone; 61, Insulation layer; 62, Waterproof padding.

Detailed ways

The present utility model will be described in further detail below in conjunction with the accompanying drawings.

Referring to FIG. 1 , a composite foundation cushion layer 4 disclosed by the utility model includes soil between piles 1 , a building foundation 2 , a pile foundation 3 , a cushion layer 4 and a water-retaining foundation stone 5 . The soil between piles 1 is the ground where the composite foundation is located, and the composite foundation mainly bears part of the load. The building foundation 2 is arranged on the upper side of the soil 1 between the piles, and the cushion layer 4 is made of sand and gravel. The pile foundation 3 is arranged vertically, its lower end penetrates into the soil 1 between the piles, and its upper end penetrates the mattress layer 4 and is fixed to the ground surface of the building foundation 2 for carrying most of the load of the building foundation 2 .

Referring to FIG. 1 , the cross-section of the water-retaining foundation stone 5 is rectangular, which extends around the perimeter of the building foundation 2 and is formed by pouring concrete, and the water-retaining foundation stone 5 is fixed to the upper surface of the soil 1 between the piles. The built-in stone 6 is fixed on the side wall of the water-retaining foundation stone 5 close to the cushion layer 4 . The water-retaining foundation stone 5 is embedded with a water-retaining layer 51 , the surface of the water-retaining layer 51 is vertical, which is made of pvc material, and the water-retaining layer 51 extends along the surrounding direction of the water-retaining foundation stone 5 , which improves the water-retaining foundation stone 5 . Impermeability. The built-in stone 6 is embedded with an insulating layer 61, the cross-section of the insulating layer 61 is rectangular, which extends along the extension direction of the built-in stone 6, and the insulating layer 61 is made of polyurethane rigid foam, which improves the insulation of the built-in stone 6. hot sex. The upper surface of the built-in stone 6, the side wall of the water-retaining cornerstone 5 close to the building foundation 2, the bottom surface of the building foundation 2 and the gap formed between the mattress layer 4 are provided with a waterproof filler 62, and the waterproof filler 62 is made of water-swellable rubber. completed, and the waterproof filler 62 fills the gap. A lower sealing groove 11 is formed on the upper surface of the soil 1 between the piles. The cross section of the lower sealing groove 11 is rectangular and extends along the surrounding direction of the water-retaining foundation stone 5 . An impermeable layer 12 is arranged in the lower sealing groove 11 . The impermeable layer 12 is formed by pouring fine stone concrete in the lower sealing groove 11 . As shown in FIG. 2 , the side wall of the water-retaining cornerstone 5 close to the building foundation 2 is provided with a cling plate 52 , and the cling plate 52 is made of polytetrafluoroethylene. It extends along the surrounding direction of the water-retaining foundation stone 5 . The water-retaining foundation stone 5 is provided with a fixing column 53 , the fixing column 53 is a cylindrical structure with a horizontal axis, and the fixing column 53 is embedded in the water-retaining foundation stone 5 and fixed by casting. One end of the fixed column 53 passes through the side wall of the water-retaining cornerstone 5 close to the building foundation 2 and is in contact with the side wall of the laminate 52 away from the building foundation 2, and the other end is flush with the side wall of the water-retaining cornerstone 5 away from the laminate 52, and is fixed. A fixing block 531 is fixed at one end of the column 53 away from the bonding plate 52 . The fixing block 531 is in the shape of a circular block. The side walls are cast and fixed. A countersunk head groove 521 is defined on the side wall of the adhering plate 52 away from the water-retaining foundation stone 5 , the opening of the countersunk head groove 521 is circular, and the adhering plate 52 is further provided with a fastening bolt 522 . The axis of the fastening bolt 522 coincides with the axis of the countersunk head groove 521, and the end of the fastening bolt 522 penetrates the inner wall of the countersunk head groove 521, the fitting plate 52 and the end face of the fixing column 53 close to the fitting plate 52 in turn, and is tightened. The fixing bolt 522 is threadedly connected with the fixing column 53 . When the tightening bolt 522 is tightened, the head of the tightening bolt 522 is arranged in the countersunk groove 521 . A stainless steel sheet 21 is fixed on the side wall of the building foundation 2. The stainless steel sheet 21 is arranged at the bottom of the building foundation 2 and is arranged in contact with the side wall of the building foundation 2. The stainless steel sheet 21 is fixed with the building foundation 2 and is away from the water-retaining foundation stone 5 with the laminating plate 52. Sidewalls fit snugly against each other. In addition, the top of the water-retaining foundation stone 5 is provided with a rubber strip 54, and the cross-section of the rubber strip 54 is a rectangular strip structure. It is used to prevent rainwater from penetrating between the laminated board 52 and the stainless steel sheet 21 .

The implementation principle of this embodiment is as follows: when the load on the building foundation 2 changes, the building foundation 2 produces a small amount of settlement relative to the soil 1 between the piles. The slight displacement between the water-retaining cornerstone 5 and the building foundation 2 prevents the load change on the building foundation 2 from being transferred to the water-retaining cornerstone 5, and keeps the water-retaining cornerstone 5 intact; and when there is rainy weather around the building foundation 2, Rainwater is accumulated on the peripheral side of the building foundation. At this time, the water-retaining foundation stone 5 prevents rainwater from invading into the cushion layer 4 between the building foundation 2 and the soil 1 between the piles, thereby preventing rainwater erosion from causing the cushion layer 4 and the soil between the piles 1. Drain, improve the stability of Building Foundation 2.

The examples of this specific embodiment are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore: all equivalent changes made according to the structure, shape and principle of the present invention are not It should be covered within the protection scope of the present invention.

Claims (8)

1. The utility model provides a composite foundation mattress layer (4), including soil (1) between the stake, set up building foundation (2) on soil (1) between the stake, set up mattress layer (4) and pile foundation (3) between soil (1) and building foundation (2) between the stake, pile foundation (3) vertical setting, pile foundation (3) lower extreme sets up in soil (1) between the stake, and pile foundation (3) upper end passes soil (1) upper surface and mattress layer (4) between the stake in proper order and is fixed with building foundation (2), its characterized in that: the water retaining base stones (5) distributed around the building foundation (2) are arranged on the peripheral sides of the building foundation (2), the water retaining base stones (5) are fixed with the upper surface of the inter-pile soil (1), and the water retaining base stones (5) are arranged around the mattress layer (4); the water retaining bed stone (5) are close to be fixed with attaching plate (52) made by polytetrafluoroethylene on the lateral wall of mattress pad layer (4), building foundation (2) are close to the lateral wall bottom of water retaining bed stone (5) is pour and is fixed with stainless steel sheet (21), stainless steel sheet (21) with attaching plate (52) are close to the lateral wall laminating and the counterbalance of building foundation (2).

2. A composite foundation mattress layer (4) according to claim 1, characterized in that: a water-resisting layer (51) made of PVC materials is embedded in the water-retaining foundation stone (5), and the water-resisting layer (51) is vertically arranged and extends along the surrounding direction of the water-retaining foundation stone (5).

3. A composite foundation mattress layer (4) according to claim 1, characterized in that: fixing columns (53) are arranged on the water-retaining base stones (5), the fixing columns (53) horizontally penetrate through the water-retaining base stones (5), one ends of the fixing columns (53) are flush with the side walls, far away from the building foundation (2), of the water-retaining base stones (5), and the other ends of the fixing columns (53) are abutted to the side walls, far away from the building foundation (2), of the attaching plates (52); be equipped with fastening bolt (522) on rigging board (52), fastening bolt (522) tip passes rigging board (52) are close to the lateral wall of building basis (2) and penetrate in fixed column (53) are close to in the one end terminal surface of rigging board (52), just fastening bolt (522) with fixed column (53) screw-thread fit.

4. A composite foundation mattress layer (4) according to claim 3, characterized in that: the side wall of the attaching plate (52) close to the stainless steel sheet (21) is provided with a countersunk groove (521), and the head of the fastening bolt (522) is arranged in the countersunk groove (521).

5. A composite foundation mattress layer (4) according to claim 1, characterized in that: the water-retaining bed stone (5) is close to the side wall integrated into one piece of mattress layer (4) has built-in stone (6) around mattress layer (4) distribution, built-in stone (6) with mattress layer (4) edge offsets, just built-in stone (6) with be equipped with between building foundation (2) by meeting water inflation rubber waterproof filler (62) of making.

6. A composite foundation mattress layer (4) according to claim 5, characterized in that: a heat insulation layer (61) made of polyurethane rigid foam is embedded in the built-in stone (6).

7. A composite foundation mattress layer (4) according to claim 1, characterized in that: and a rubber strip (54) is fixed at the top of the water retaining base stone (5), and the rubber strip (54) surrounds the building foundation (2) and is abutted against the side wall of the building foundation (2).

8. A composite foundation mattress layer (4) according to claim 1, characterized in that: lower seal groove (11) have been seted up to soil (1) upper surface between stake, sealing groove (11) pouring has down barrier layer (12) by the pouring of fine stone concrete, barrier layer (12) with manger plate bed stone (5) bottom surface is fixed, just down seal groove (11) are followed the direction of encircleing of manger plate bed stone (5) extends.

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