CN219364557U - Composite artificial foundation device for waterproof type lime soil compaction pile - Google Patents

Abstract

The utility model discloses a waterproof type cement-soil compaction pile composite artificial foundation device, and relates to the technical field of artificial foundations. The soil compaction pile array is distributed in a collapsible soil layer, four adjacent soil compaction piles are transversely formed in the middle of each soil compaction pile, reinforcing holes are formed in the middle of each soil compaction pile, soil reinforcement columns are fixedly arranged in the reinforcing holes through tamping, and intervals are formed on the top ends of the soil reinforcement columns, which are away from the surfaces of the reinforcing holes. The utility model is provided with the reinforcing holes and the lime soil reinforcing columns, the reinforcing holes are arranged in the middle of the compaction soil layer formed by the four adjacent lime soil compaction piles, finally, lime soil is added into the reinforcing holes and compacted, and the lime soil reinforcing columns squeeze the surrounding compaction soil layer, so that the compactness of the compaction soil layer can be further increased, and the compaction times can be reduced under the requirements of the design compactness and the foundation bearing capacity, thereby improving the production efficiency.

Description

Composite artificial foundation device for waterproof type lime soil compaction pile

Technical Field

The utility model relates to the technical field of artificial foundations, in particular to a waterproof type cement-soil compaction pile composite artificial foundation device.

Background

In the provinces of Shanxi province, qinghai province, gansu province and the like of China, a large number of collapsible loess areas are distributed, and the collapsible loess generates collapsible characteristics when meeting water, so that a building is constructed in the areas, and the foundation must be treated to change the collapsible loess characteristics when meeting water, so that the safety of an upper structure is ensured.

The Chinese patent publication No. CN103161175B discloses a waterproof type cement-soil compaction pile composite artificial foundation, which overcomes the defects of large treatment area, deep depth, high cost, long construction period and the like in the prior art.

In the scheme, the foundation device with the multi-ash-soil compaction piles and the thin water-resisting layer is replaced by the ash-soil compaction pile water-resisting layer arranged at the periphery and the thick ash-soil water-resisting layer arranged at the top. However, the above scheme still has a certain problem in practical application, for example, in the construction process of the lime soil compaction pile, the compaction degree of the pile body soil often can meet the design requirement, and the compaction degree of the soil between piles does not reach the design rule yet. Therefore, in order to achieve the specified compaction degree of the soil between piles, the number of times of hammering and tamping the soil of the pile body is generally increased, so that the construction period is prolonged and the cost is increased.

Therefore, a waterproof type soil compaction pile composite artificial foundation device is provided to solve the problems.

Disclosure of Invention

The utility model aims to provide a waterproof type cement compaction pile composite artificial foundation device so as to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the water-proof type gray soil compaction pile composite artificial foundation device comprises a plurality of gray soil compaction piles, wherein gray soil compaction piles are distributed in a collapsible soil layer, four gray soil compaction piles which are transversely adjacent are formed in the middle of each gray soil compaction pile, reinforcing holes are formed in the middle of each gray soil compaction pile, gray soil reinforcing columns are fixedly rammed in the reinforcing holes, intervals are formed on the top ends of the gray soil reinforcing columns, and gray soil water-proof layers are arranged at the tops of the gray soil compaction piles.

Preferably, a foundation pit is excavated at the top of the collapsible soil layer, and the gray soil water-resisting layer is positioned in the foundation pit.

Preferably, the distance of the gap is 0.3-1 m.

Preferably, the gray soil waterproof layer comprises a plurality of gray soil cylindrical blocks and gray soil plane layers, wherein the number of the gray soil cylindrical blocks and the gray soil plane layers are equal to that of the reinforcing holes;

the gray soil cylindrical blocks are positioned in the intervals;

the ash soil column blocks and the ash soil plane layer form an integrated structure through tamping.

Compared with the prior art, the utility model has the beneficial effects that:

this compound artifical foundation device of water proof formula soil compaction stake is provided with consolidates hole and soil reinforcement post to consolidate the hole setting and form the middle part of compaction soil layer at four adjacent soil compaction stakes, add the soil in the hole of consolidating at last and tamp and form the soil reinforcement post, the soil reinforcement post extrudees the compaction soil layer all around, thereby can be further increase the compaction degree of compaction soil layer, under reaching the requirement of design compaction degree and foundation bearing capacity like this, can reduce the ramming number, thereby improve production efficiency.

Meanwhile, in the scheme, the lime-soil water-resisting layer comprises the lime-soil cylindrical blocks and the lime-soil plane layer, the lime-soil cylindrical blocks are positioned in the reinforcing holes, and the side shifting of the lime-soil water-resisting layer is avoided, so that the water is prevented from entering the collapsible soil layer, the foundation is not collapsed, the overall stability of the lime-soil plane layer can be ensured, and the safety of an upper building structure is ensured.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a view of the present utility model for removing soil;

fig. 3 is a semi-sectional view of the present utility model.

In the figure: 101. a hard soil layer; 102. a layer of collapsible soil; 2. compacting the pile by using the lime soil; 3. reinforcing the hole; 4. a soil reinforcement column; 5. a gray soil water-resisting layer; 501. a cylindrical block of gray soil; 502. a gray soil plane layer.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model provides a technical scheme for overcoming the defects of large treatment area, high cost, long construction period and the like of a soil-cement compaction pile composite artificial foundation in the prior art: a water-proof type cement soil compaction pile composite artificial foundation device.

As shown in fig. 1 to 3, the foundation device includes a plurality of soil compacting piles 2, the soil compacting piles 2 are distributed in a collapsible soil layer 102 in an array, it is to be understood that the transverse and vertical connecting lines of the top centers of four soil compacting piles 2 adjacent in the transverse direction form a rectangle, the concrete forming process of the soil compacting piles 2 is that steel pipes are driven into the soil by hammering drivers until the steel pipes extend into a hard soil layer 101, the concrete extending distance depends on the weight of a building, holes are compacted in the lateral direction, then the pipes are pulled out, and 2 is backfilled in the pile holes in layers: 8 or 3:7, tamping the lime soil for a plurality of times, and compacting the lime soil compaction pile 2 and soil between piles to form a composite foundation so as to bear upper load.

In this scheme, four laterally adjacent soil compaction piles 2 are formed with compaction soil layer in the middle part, set up at compaction soil layer middle part and consolidate hole 3 (with the formation principle of soil compaction pile 2 the same), be fixed with soil reinforcement post 4 through the pile driver ramming in consolidate hole 3, in order to reduce the construction volume, soil reinforcement post 4 bottom can not pierce through wet soil layer 102, be formed with the interval at soil reinforcement post 4 top apart from the surface of consolidating hole 3, its interval distance is 0.3-1 m, preferably 0.5m, the top of soil compaction pile 2 is provided with the soil water barrier 5 that reduces water and enter into compaction soil layer.

In a specific embodiment of this scheme, as shown in fig. 2, a foundation pit is excavated at the top of the collapsible soil layer 102, and the soil-blocking layer 5 is located in the foundation pit, it can be understood that the foundation pit is excavated before the soil compaction pile 2 is formed, so as to prevent the influence of too high foundation on the aesthetic property of the building, and avoid the influence of too high foundation by secondary filling.

In order to reduce the entry of water into the collapsible soil layer 102, the foundation is not collapsed, and as shown in fig. 3, the soil-blocking layer 5 includes soil cylindrical blocks 501 and soil plane layers 502 in an equal number to the reinforcing holes 3;

wherein the cylindrical blocks 501 of gray soil are located within the space;

the gray soil column blocks 501 and the gray soil plane layers 502 are compacted to form an integral structure.

To the supplement of this scheme, be provided with reinforcing hole 3 and lime soil reinforcing column 4 to reinforcing hole 3 sets up the middle part of the crowded dense soil layer that forms at four adjacent lime soil crowded dense piles 2, uses the pile driver to carry out segmentation and beat the compaction many times to the lime soil that adds in the reinforcing hole 3, thereby has formed lime soil reinforcing column 4, and lime soil reinforcing column 4 extrudees the crowded dense soil layer all around, thereby can further increase the compaction degree of crowded dense soil layer, thereby can reduce construction cost, reduce the construction degree of difficulty and shortened construction period.

Meanwhile, in the scheme, the lime-soil waterproof layer 5 comprises the lime-soil cylindrical blocks 501 and the lime-soil planar layer 502, the lime-soil cylindrical blocks 501 are positioned in the reinforcing holes 3, and the side shifting of the lime-soil waterproof layer 5 is effectively prevented, so that the water is prevented from entering the collapsible soil layer 102, the foundation is not collapsed, the overall stability of the lime-soil planar layer 502 can be ensured, and the safety of an upper building structure is ensured.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made hereto without departing from the spirit and scope of the utility model as defined by the appended embodiments and equivalents thereof.

Claims (4)

1. The utility model provides a compound artifical foundation device of waterproof formula soil compaction stake, includes a plurality of soil compaction stake (2), and soil compaction stake (2) array distribution is in collapsible soil layer (102), its characterized in that: four transversely adjacent the crowded close stake of ash soil (2) middle part is formed with crowded close soil layer, has seted up at crowded close soil layer middle part and has consolidated hole (3), is fixed with ash soil reinforcing column (4) through ramming in the reinforcing hole (3), and ash soil reinforcing column (4) top is formed with the interval apart from the surface of reinforcing hole (3), and the top of the crowded close stake of ash soil (2) is provided with ash soil water-proof layer (5).

2. The water-resistant type lime soil compaction pile composite artificial foundation device according to claim 1, wherein: foundation pit is excavated at the top of collapsible soil layer (102), and soil water-proof layer (5) are located the foundation pit.

3. The water-resistant type lime soil compaction pile composite artificial foundation device according to claim 1, wherein: the distance of the interval is 0.3-1 m.

4. The water-resistant type lime soil compaction pile composite artificial foundation device according to claim 1, wherein: the lime-soil waterproof layer (5) comprises a plurality of lime-soil cylindrical blocks (501) and a lime-soil plane layer (502) which are equal to the reinforcing holes (3);

the gray soil column blocks (501) are positioned in the intervals;

the gray soil column block (501) and the gray soil plane layer (502) are compacted to form an integrated structure.