CN212926127U

CN212926127U - Composite foundation mattress layer

Info

Publication number: CN212926127U
Application number: CN202021731827.7U
Authority: CN
Inventors: 叶纯志; 蔡春韬
Original assignee: Anhui Yonghao Construction Engineering Co ltd
Current assignee: Anhui Yonghao Construction Engineering Co ltd
Priority date: 2020-08-18
Filing date: 2020-08-18
Publication date: 2021-04-09
Anticipated expiration: 2030-08-18

Abstract

The utility model relates to a composite foundation mattress layer, including bury underground in the pile body and by supreme plain concrete closed layer, grey soil elastic cushion layer and the rubble bed course of being in proper order down, rubble bed course top is reinforced concrete foundation, the top of pile body is located in the grey soil elastic cushion layer, the geomembrane has been laid in the rubble bed course, the geomembrane is close to one side of reinforced concrete foundation is provided with the aqueduct, the aqueduct is located be close to in the rubble bed course one side of grey soil elastic cushion layer, the aqueduct both sides the geomembrane to reinforced concrete foundation extends in one side, follow on the aqueduct global a plurality of inlet openings have been seted up on a week and the length direction of aqueduct, just aqueduct and underground drainage pipe intercommunication. The method has the effects of reducing moisture permeation and improving engineering quality.

Description

Composite foundation mattress layer

Technical Field

The application relates to the field of constructional engineering foundations, in particular to a composite foundation mattress layer.

Background

The mattress layer is arranged on the top of the pile body of the pile-soil composite foundation and mainly plays a role in adjusting pile-soil load sharing, reducing stress concentration of the bottom surface of the foundation and coordinating deformation of the pile soil. The pile and the mattress layer are stressed together, the stress concentration of the bottom surface of the foundation is reduced, and the mattress layer is made of materials with better water stability and water permeability, such as medium sand, coarse sand, graded gravel, broken stones and the like.

The Chinese patent with the publication number of CN207846453U in the prior art discloses a CFG pile composite mattress layer structure, which comprises a first mattress layer, a geogrid layer, a mortar layer and a reinforced concrete layer, wherein the first mattress layer, the geogrid layer, the mortar layer and the reinforced concrete layer are arranged on the upper layer of a pile body, the composite mattress layer structure is provided with a plurality of layers, a reinforced concrete foundation is arranged on the uppermost layer, different mattress layers adopt filling aggregates with different particle sizes, the integrity of the mattress layers is improved through geogrids, the multi-layer mattress layer has comprehensive effects, and the common bearing capacity of the pile body and soil between piles is better exerted.

For the above-mentioned related art, the inventor thinks that there is the foundation ditch backfill back, and the aforesaid mattress layer can't be discharged the water that permeates in the ground, seeps water to ground and mattress layer for a long time, can cause the possibility of ground subsidence, and then influences engineering quality.

SUMMERY OF THE UTILITY MODEL

In order to reduce moisture infiltration, improve engineering quality, this application provides a composite foundation mattress layer.

The application provides a compound ground mattress layer adopts following technical scheme:

the utility model provides a composite foundation mattress pad layer, is including burying underground in the pile body and by supreme plain concrete closed layer, grey soil elastic cushion layer and the rubble bed course of being in proper order down, rubble bed course top is reinforced concrete foundation layer, the top of pile body is located in the grey soil elastic cushion layer, the geomembrane has been laid in the rubble bed course, the geomembrane is close to one side of reinforced concrete foundation layer is provided with the aqueduct, the aqueduct is located be close to in the rubble bed course one side of grey soil elastic cushion layer, the aqueduct both sides the geomembrane to reinforced concrete foundation layer one side extends, follow on the aqueduct global a plurality of inlet openings have been seted up on a week and the length direction of aqueduct, just aqueduct and underground drainage pipe intercommunication.

Through adopting above-mentioned technical scheme, utilize the geomembrane can hinder moisture infiltration, because the aqueduct is close to grey soil elastic cushion layer, and the geomembrane of aqueduct both sides extends to reinforced concrete foundation layer one side, can make the moisture of aqueduct both sides to the water pipe flow, and then can collect moisture and discharge to in the underground drainage pipe, therefore can reduce moisture infiltration to mattress pad in situ, can improve engineering quality.

Preferably, the diameter of the particles of the gravel in the gravel cushion is 20mm-40 mm.

By adopting the technical scheme, the broken stones with the particle diameters of 20mm-40mm are used as broken stone cushion layers, so that the moisture can flow in the broken stone layers conveniently, and the moisture can be collected and discharged conveniently.

Preferably, the water guide pipes are parallel to each other, and a communicating pipe is communicated between the adjacent water guide pipes.

Through adopting above-mentioned technical scheme, lay many aqueducts, can accelerate the collection of moisture to through each aqueduct of communicating pipe intercommunication, the emission of the moisture of being convenient for.

Preferably, a filter screen is fixedly connected to the water inlet hole, and the filter screen is a steel wire mesh.

Through adopting above-mentioned technical scheme, utilize the filter screen, can hinder during the rubble gets into the aqueduct, reduce and lead to the fact the jam to the aqueduct.

Preferably, the thin pile is buried in the mattress pad layer, the thin pile is located four intermediate position between the pile body, the top of thin pile is located in the rubble pad layer, the top rigid coupling of pile body has supporting seat one, the top rigid coupling of thin pile has supporting seat two, the top rigid coupling of supporting seat two has the support backing plate, the support backing plate with four of thin pile a week be connected with the bracing piece between the pile body.

Through adopting above-mentioned technical scheme, when the effect of mattress layer received the power, utilize second supporting seat and bracing piece can disperse the effort to each pile body in, and the thin stake also can bear mattress layer application of force, and then can reduce and cause the damage to the pile body, the life of extension pile body.

Preferably, the bracing piece is arc-shaped, just the cambered surface of bracing piece is protruding to keeping away from one side of reinforced concrete foundation layer.

Through adopting above-mentioned technical scheme, set up the bracing piece into the arc form, can be so that the bracing piece is the arch form, and then can improve the bracing piece and can bear bigger effort, improved the holding power of bracing piece.

Preferably, an inclined strut is fixedly connected to the concave side of the supporting rod, and two ends of the inclined strut are respectively close to the first supporting seat and the supporting base plate.

Through adopting above-mentioned technical scheme, utilize the diagonal brace, can support the both ends of bracing piece, and then can reduce the bracing piece and take place deformation, further improved the holding power of bracing piece.

In summary, the present application includes at least one of the following beneficial technical effects:

the geomembrane and the water guide pipe are arranged, so that moisture permeation can be hindered by the geomembrane, the water guide pipe is close to the lime soil elastic cushion layer, and the geomembranes on the two sides of the water guide pipe extend to one side of the reinforced concrete foundation layer, so that the moisture on the two sides of the water guide pipe can flow to the water guide pipe, and further the moisture can be collected and discharged into an underground drainage pipeline, so that the moisture permeation into the mattress cushion layer can be reduced, and the engineering quality can be improved;

by arranging the thin piles, when the mattress layer is acted by force, the acting force can be dispersed into each pile body by utilizing the second supporting seat and the supporting rod, and the thin piles can also bear the force exerted by the mattress layer, so that the damage to the pile body can be reduced, and the service life of the pile body can be prolonged;

through setting up the bracing piece into the arc form, can be so that the bracing piece is the arch form, and then can improve the bracing piece and can bear bigger effort, improved the holding power of bracing piece.

Drawings

Fig. 1 is a schematic view of a layer structure of a mattress layer according to an embodiment of the present application.

Fig. 2 is a partial layered structure diagram of fig. 1, mainly illustrating the construction of a water guide duct.

Fig. 3 mainly illustrates the construction between the pile body and the thin pile in fig. 1.

Description of reference numerals: 1. a pile body; 21. plain concrete sealing layers; 22. a lime soil elastic cushion layer; 23. a gravel cushion layer; 3. a reinforced concrete foundation layer; 4. a geomembrane; 5. a water conduit; 51. a water inlet hole; 52. a filter screen; 501. a communicating pipe; 6. fine piling; 71. a first supporting seat; 72. a second supporting seat; 73. a support pad; 74. a support bar; 741. a diagonal brace.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a composite foundation mattress layer. Referring to fig. 1, a composite foundation mattress layer includes, from bottom to top, a plain concrete closed layer 21, a lime-soil elastic cushion layer 22, and a crushed stone cushion layer 23. The plain concrete is a structure made of concrete without ribs or stress reinforcing steel bars, and the plain concrete sealing layer 21 is arranged as the bottommost layer, so that the hardness of the foundation can be enhanced, and the mattress layer can be sealed; the lime-soil elastic cushion layer 22 is formed by uniformly mixing slaked lime powder and clay according to the proportion of 2:3 and tamping under the condition of certain water content, and can play a role in elastic buffering; the gravel cushion 23 is formed by paving gravel with the particle diameter of 20mm-40mm, and the flow of moisture is facilitated through gaps between the gravel.

As shown in fig. 1 and fig. 2, geomembrane 4 is further laid in the gravel cushion layer 23, one side of the geomembrane 4 close to the reinforced concrete foundation layer 3 is provided with a water conduit 5, the water conduit 5 is abutted against the geomembrane 4, the water conduit 5 is multiple and parallel to each other, the multiple water conduits 5 are equidistantly distributed in the gravel cushion layer 23, and a communicating pipe 501 is communicated between two adjacent water conduits 5, the end part of the water conduit 5 is communicated with an underground drainage pipeline, in addition, a plurality of water inlet holes 51 are formed in the circumferential surface of the water conduit 5 along the circumference and the length direction of the water conduit 5, a filter screen 52 is fixedly connected to the water inlet holes 51, the filter screen 52 is utilized, the gravel can be prevented from entering the water conduit 5, and the blocking of the water conduit 5. The geomembranes 4 on the two sides of the water guide pipe 5 extend towards one side of the reinforced concrete foundation layer 3, so that the geomembranes 4 on the two sides of the water guide pipe 5 are enabled to be V-shaped, and the water on the crushed stone layer can be favorably distributed to the water guide pipe 5.

Utilize geomembrane 4 can hinder moisture infiltration, and moisture on the geomembrane 4 flows to guide pipe 5, and then can utilize guide pipe 5 to collect moisture and discharge to underground drainage pipe in, therefore can reduce moisture infiltration to mattress pad layer in, reduce mattress pad layer sunken possibility, and then can improve engineering quality.

As shown in fig. 1, a reinforced concrete foundation layer 3 is disposed above the gravel cushion layer 23, the mattress cushion layer can be capped by using reinforced concrete, a pile body 1 is embedded in the mattress cushion layer, the pile body 1 can be a rigid pile, the top of the pile body 1 is located in a lime-soil elastic cushion layer 22, and the pile bodies 1 are a plurality of pile bodies and are uniformly distributed in the mattress cushion layer. Still buried the thin pile 6 in the mattress layer, thin pile 6 is flexible post, thin pile 6 is many, and the intermediate position between per four pile bodies 1 is provided with a thin pile 6, the diameter and the degree of depth of thin pile 6 all are less than pile body 1, the top of thin pile 6 is located rubble bed course 23, the pile body 1 and the thin pile 6 of burying underground in the mattress layer can make mattress layer and stake bear the effort of reinforced concrete foundation layer 3 jointly, reduce stress concentration, be favorable to guaranteeing mattress layer's bearing capacity.

As shown in fig. 3, the top of the pile body 1 is bolted with a first support seat 71, the top of the thin pile 6 is bolted with a second support seat 72, the second support seat 72 is identical to the first support seat 71 in shape and structure, the first support seat 71 and the second support seat 72 are both composed of a circular bottom plate and a vertical column, a support pad 73 is fixedly connected between the first support seat 71 and the second support seat 72, the support pad 73 is a circular plate, a support rod 74 is fixedly connected between the periphery of the support pad 73 and the top of the first support seat 71, the support rod 74 is a circular rod, the support rod 74 is an arc rod, the arc surface of the support rod 74 protrudes to the side far away from the top of the pile body 1, an inclined strut 741 is fixedly connected to the concave side of the support rod 74.

When the mattress layer is acted by force, the second support seat 72 and the support rod 74 can disperse the acting force to each pile body 1, and the thin pile 6 can also bear the force exerted by the mattress layer, so that the damage to the pile body 1 can be reduced, and the service life of the pile body 1 is prolonged. In addition, the inclined strut 741 can support both ends of the strut bar 74, thereby reducing the deformation of the strut bar 74 and further improving the supporting capability of the strut bar 74.

The implementation principle of this application embodiment a composite foundation mattress layer does: utilize geomembrane 4 can hinder moisture infiltration, because aqueduct 5 is close to grey soil elastic cushion layer 22, and the geomembrane 4 of aqueduct 5 both sides extends to 3 one sides of reinforced concrete foundation layer, can make the moisture of geomembrane 4 both sides flow to aqueduct 5, and then can collect moisture and discharge to the underground drainage pipe in, therefore can reduce moisture infiltration to the mattress pad in situ, can improve engineering quality.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A composite foundation mattress layer, characterized in that: comprises a plain concrete closed layer (21), a gray soil elastic cushion layer (22) and a broken stone cushion layer (23) which are buried in a pile body (1) and sequentially arranged from bottom to top, a reinforced concrete foundation layer (3) is arranged above the broken stone cushion layer (23), the top of the pile body (1) is positioned in the gray soil elastic cushion layer (22), a geomembrane (4) is laid in the broken stone cushion layer (23), one side of the geomembrane (4) close to the reinforced concrete foundation layer (3) is provided with a water conduit (5), the water conduit (5) is positioned at one side of the broken stone cushion layer (23) close to the gray soil elastic cushion layer (22), the geomembrane (4) at two sides of the water conduit (5) extends towards one side of the reinforced concrete foundation layer (3), a plurality of water inlet holes (51) are formed on the circumferential surface of the water conduit (5) along the circumference and the length direction of the water conduit (5), and the water guide pipe (5) is communicated with an underground drainage pipeline.

2. The composite foundation mattress layer of claim 1, wherein: the particle diameter of the gravels in the gravel cushion layer (23) is 20mm-40 mm.

3. The composite foundation mattress layer of claim 1, wherein: the water guide pipes (5) are parallel to each other, and a communicating pipe (501) is communicated between the adjacent water guide pipes (5).

4. The composite foundation mattress layer of claim 1, wherein: a filter screen (52) is fixedly connected to the water inlet hole (51), and the filter screen (52) is a steel wire mesh.

5. The composite foundation mattress layer of claim 1, wherein: still bury thin stake (6) in the mattress bed course underground, thin stake (6) are located four intermediate position between the pile body (1), the top of thin stake (6) is located in rubble bed course (23), the top rigid coupling of pile body (1) has supporting seat one (71), the top rigid coupling of thin stake (6) has supporting seat two (72), the top rigid coupling of supporting seat two (72) has support backing plate (73), support backing plate (73) with four of thin stake (6) a week be connected with bracing piece (74) between the pile body (1).

6. The composite foundation mattress layer of claim 5, wherein: the support rod (74) is arc-shaped, and the arc surface of the support rod (74) protrudes to one side far away from the reinforced concrete foundation layer (3).

7. The composite foundation mattress layer of claim 6, wherein: an inclined strut (741) is fixedly connected to the concave side of the strut (74), and two ends of the inclined strut (741) are respectively close to the first support seat (71) and the support base plate (73).