CN212582716U

CN212582716U - Slip casting composite foundation that building reinforcement was rectified

Info

Publication number: CN212582716U
Application number: CN202020965402.6U
Authority: CN
Inventors: 罗伟全; 张雪华; 王天梅
Original assignee: Dongguan Dacheng Construction Engineering Technology Co ltd
Current assignee: Dongguan Dacheng Construction Engineering Technology Co ltd
Priority date: 2020-03-17
Filing date: 2020-05-30
Publication date: 2021-02-23
Anticipated expiration: 2030-05-30

Abstract

The utility model relates to a technical field of compound ground of slip casting especially relates to a compound ground of slip casting that building reinforcement was rectified, and it is including being used for inserting the foundation pile under the soil, and foundation pile length direction's both ends are run through and are had the slip casting hole that is used for the liquid thick liquid to fill, have seted up a plurality of solid thick liquid holes on the side of foundation pile. The utility model discloses can consolidate original support ground, be difficult for causing the effect of destruction to original ground.

Description

Slip casting composite foundation that building reinforcement was rectified

Technical Field

The utility model belongs to the technical field of the compound ground of slip casting and specifically relates to a compound ground of slip casting that rectifies is consolidated to building.

Background

The composite foundation refers to an artificial foundation formed by reinforcing or replacing part of soil and bearing load by foundation soil and a reinforcing body together. If the inclination value exceeds the allowable value in the building foundation design specification (GB50007-2011), stable reinforcement and correction must be carried out on the inclination value. The working principle of the deviation rectifying and reinforcing method is to change the stress state of the foundation, i.e. the stress release principle or the stress transfer principle, and disturb and destroy the soil structure to promote the soil to be consolidated and settled again under the action of the upper load so as to achieve the purpose of deviation rectifying. The deviation rectifying method needs to be selected according to the upper structure, the foundation type, the geotechnical engineering condition of the foundation and the construction environment condition. In the deviation rectifying and reinforcing of the composite foundation, the deviation rectifying and reinforcing can be carried out on the composite foundation by three steps by using a pressure grouting method. Wherein, the first step is to carry out foundation reinforcement treatment, the second step is to carry out column section enlarging reinforcement treatment, and the third step is to carry out decoration and reconstruction treatment.

The existing grouting composite foundation for building reinforcement and deviation correction is to put a grouting pipe with a special nozzle into a soil layer at a preset depth, and then to strongly impact and damage the soil body by a high-pressure jet flow with a pressure of about 20MPA, so that the grout and the soil body are stirred and mixed, and a solidification body is formed in the soil after solidification. The prior art is mainly used for reinforcing the foundation, improving the shear strength of the foundation and improving the deformation modulus of soil.

The above prior art solutions have the following drawbacks: the grouting depth of the prior art is shallow, the grouting method is not suitable for grouting reinforcement of a large-depth weak foundation, and impact damage can be formed on a building foundation in the high-pressure grouting process, so that a foundation slab is locally bulged, even secondary settlement is easily caused by cracking, and the original supporting foundation is damaged.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing a building consolidates compound ground of slip casting of rectifying, original support ground consolidates, is consequently difficult for causing destruction to original ground.

The utility model aims at realizing through the following technical scheme:

the utility model provides a slip casting composite foundation who rectifies, is including being used for inserting the foundation pile under the soil, foundation pile length direction's both ends are run through and are had the slip casting hole that is used for the liquid thick liquid to pour into, seted up a plurality of solid thick liquid holes on the side of foundation pile, pack in solid thick liquid hole after the liquid thick liquid solidifies.

By adopting the technical scheme, high-pressure grouting is directly injected into the grouting holes of the foundation piles, and the foundation piles separate the liquid cement from the soil body, so that the impact of the high-pressure liquid cement on the soil body can be reduced; the periphery side of the foundation pile is provided with a grout fixing hole, the liquid grout can overflow the stock hole under the grout spraying pressure of a high-pressure grout spraying method and is mixed with the soil body on the periphery side of the foundation pile, the liquid grout can be integrally connected with the soil body after being solidified, so that the foundation pile and the soil body are integrally connected, the foundation pile not only has a supporting effect on a building, but also can be anchored with the soil body, and therefore, the original foundation is not easily damaged in the grouting process.

The present invention may be further configured in a preferred embodiment as: still include concrete foundation stabilization platform, the one end that the foundation pile is close to ground is provided with the bearing stake, the bearing stake is fixed through concrete placement with the foundation pile, it is fixed through concreting between bearing stake and the concrete foundation stabilization platform.

Through adopting above-mentioned technical scheme, the foundation pile is fixed through bearing stake and concrete foundation stabilization platform, and concrete foundation stabilization platform can increase the bearing area of composite foundation, transmits the pressure of building comparatively evenly to the foundation pile in, reduces partial foundation pile in a plurality of foundation piles and subsides under receiving inhomogeneous pressure, therefore concrete stabilization platform has better bearing capacity, has strengthened composite foundation's bearing capacity.

The present invention may be further configured in a preferred embodiment as: be provided with the splice bar between the bearing stake, the splice bar runs through in the bearing stake.

Through adopting above-mentioned technical scheme, the splice bar is connected between with the bearing stake, and the splice bar can transmit the effort that receives to the bearing stake in to can disperse the atress, reduce single foundation pile and receive the problem that subsides behind the pressure, consequently can play the whole effect that is difficult for receiving the destruction of protection ground.

The present invention may be further configured in a preferred embodiment as: vertical supporting ribs are arranged among the foundation piles at intervals, the length direction of the vertical supporting ribs is consistent with that of the foundation piles, and one ends of the vertical supporting ribs are connected with the connecting ribs.

Through adopting above-mentioned technical scheme, vertical brace rod sets up between the foundation pile, strengthens the support capacity of foundation pile in vertical side to the pressure energy that the splice bar received can transmit for vertical brace rod, therefore vertical brace rod can play the effect of in time transmitting the effort to the soil body.

The present invention may be further configured in a preferred embodiment as: the periphery of the vertical supporting rib is provided with a thread section, and one end of the vertical supporting rib is provided with an inserting tip which is convenient to insert into soil.

By adopting the technical scheme, when the vertical support rib is inserted into the soil body, the thread section can be tightly anchored with the soil body, so that the movement of the vertical support rib in the vertical direction is reduced, and the anti-sedimentation effect of the vertical support rib can be improved.

The present invention may be further configured in a preferred embodiment as: the bearing stake is the round platform form, the less terminal surface of bearing stake is fixed with the foundation pile, the great terminal surface of bearing stake and concrete foundation stabilization platform butt.

Through adopting above-mentioned technical scheme, the less area of foundation pile terminal surface enlarges the area of being connected with concrete foundation stabilization platform through the bearing stake of connecting for the foundation pile can transmit the effort that concrete foundation stabilization platform received to the foundation pile in, because the bearing stake is comparatively inseparable with the terminal surface laminating of foundation pile, consequently the foundation pile is difficult for with the disconnection of concrete foundation stabilization platform, has played the effect of consolidating being connected of foundation pile and concrete foundation stabilization platform.

The present invention may be further configured in a preferred embodiment as: the concrete foundation consolidates and has pour the stiffening layer that shears on the platform, the reinforcing bar rack has been buried underground in the stiffening layer that shears.

Through adopting above-mentioned technical scheme, the reinforcing bar rack has tensile ability, has certain toughness simultaneously, and consequently the reinforcing layer that shears that has embedded the reinforcing bar rack inside has the ability of anti-shear, and its ability of anti-shear is stronger, and the reinforcing layer that shears is difficult for the fracture.

The present invention may be further configured in a preferred embodiment as: the reinforcing bar rack is including indulging muscle and horizontal muscle, horizontal muscle with indulge the crisscross setting of muscle, horizontal muscle is connected through the fastener with the crisscross department of indulging the muscle.

Through adopting above-mentioned technical scheme, indulge and be provided with the crossbeam on muscle and the horizontal muscle to interconnect's indulge muscle and horizontal muscle can be with pressure dispersion to the strengthening layer that shears, promote the sound construction degree of reinforcing bar rack in the strengthening layer that shears.

To sum up, the utility model discloses a following at least one useful technological effect:

the foundation pile is provided with the grout fixing hole, so that liquid grout seeps out of the outer side of the foundation pile and is combined with the soil body in the grouting process, the original supporting foundation on the soil body is reinforced, the foundation pile can play a role of separating from the soil body in the high-pressure sprinkling irrigation process, the impact force on the soil body is reduced, and the original foundation is not easily damaged;

bearing piles are fixedly poured on the foundation piles, connecting ribs penetrate through adjacent bearing piles, and the connecting ribs can connect the single foundation piles through the bearing piles to disperse the stress of the single foundation piles, so that the foundation piles are not easy to settle under the action of pressure;

be provided with concrete foundation stabilization platform on the bearing stake, be fixed with the reinforcing layer that shears on the concrete foundation stabilization platform, concrete foundation stabilization platform can increase the area of contact of compound butt, reduces the pressure that single foundation pile received, consequently can reduce the subsidence of single foundation pile.

Drawings

Fig. 1 is a schematic view of an overall structure of a grouting composite foundation for building reinforcement and deviation rectification according to an embodiment of the present invention;

fig. 2 is a cross-sectional view of the present invention along the direction of fig. 1.

Reference numerals: 1. foundation piles; 101. grouting holes; 102. grouting holes; 2. a concrete foundation stabilization platform; 21. supporting the pile; 22. connecting ribs; 221. a connecting member; 23. vertical support ribs; 231. a threaded segment; 232. an insertion tip; 3. a shear resistant reinforcement layer; 31. a steel bar net rack; 311. longitudinal ribs; 312. transverse ribs; 313. and (5) erecting the ribs.

Detailed Description

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

Referring to fig. 1, fig. 2, for the utility model discloses a slip casting composite foundation who rectifies is consolidated to building, including being used for inserting foundation pile 1 under the soil, foundation pile 1 is the column, and foundation pile 1 can make for reinforced concrete. The foundation pile 1 may be provided with a plurality of rows. The foundation pile 1 is also provided with a cavity inside, the cavity is arranged along the length direction of the foundation pile 1, and the two ends of the foundation pile 1 are communicated to form a grouting hole 101. A plurality of grout holes 102 are formed on the peripheral side of the foundation pile 1, and the grout holes 102 are communicated with the grouting holes 101. Grout holes 102 are uniformly arranged on the circumferential side of foundation pile 1, and in the present embodiment, grout holes 102 are arranged in a plurality of rows along the longitudinal direction of foundation pile 1.

When the high-pressure spray irrigation method is used, the foundation pile 1 is firstly driven into the soil body, and liquid slurry is poured into the grouting hole 101 of the foundation pile 1. The grout overflows from the grout holes 102 under high pressure and is mixed with the soil outside the foundation pile 1 to form a whole. The arrangement can reinforce the composite foundation, and the foundation pile 1 can enhance the compressive strength of the soil body, so that the composite foundation is not easy to generate settlement; and meanwhile, the solidified slurry can be anchored with a soil body, so that the foundation can be reinforced due to some reasons during construction, and the foundation is not easy to damage.

Vertical support ribs 23 are arranged between the foundation piles 1 at intervals. Specifically, the outer circumference of the vertical support rib 23 is provided with a threaded section 231, and one end of the vertical support rib 23 is integrally provided with an insertion tip 232 which is convenient to insert into the soil. Further, the length direction of the vertical support rib 23 coincides with the length direction of the foundation pile 1.

The upper end of the foundation pile 1 is positioned in the soil body, and a bearing pile 21 is fixed at the upper end of the foundation pile 1. The bearing pile 21 can be the round platform form or the terrace form that concrete placement formed, the preferred round platform form of bearing pile 21 in this embodiment, bearing pile 21 is that the less terminal surface of round platform form passes through concrete placement with the terminal surface of foundation pile 1 upper end to be fixed, because grout fills up grouting holes 101 during high pressure sprinkling irrigation, can flush with the upper end edge of foundation pile 1 during consequently grout solidification, consequently the up end of foundation pile 1 can be great with the less terminal surface laminating area of bearing pile 21 this moment, and combine firmly. The support piles 21 are also buried in the soil, so that the support piles 21 can transmit stress to the soil when being subjected to pressure or other acting force.

Bearing stake 21 has buried splice bar 22 underground when the preparation, splice bar 22 is the reinforcing bar, splice bar 22 can have many, a splice bar 22 can have worn many bearing stake 21, it is formed with the whole of interconnect relation to link up through splice bar 22 cluster between a plurality of bearing stakes 21, when single bearing stake 21 receives great pressure or effort, splice bar 22 can pass to adjacent bearing stake 21 on with power, the dispersion atress, splice bar 22 is limited to the position of bearing stake 21 and is used simultaneously, make single bearing stake 21 be difficult for subsiding or the skew takes place for the position.

Further, the end of the vertical support rib 23 away from the insertion tip 232 is connected to the connecting rib 22 through a connecting part 221, the connecting part 221 may be a T-shaped pipe, the T-shaped pipe includes a long arm and a cross arm, the connecting rib 22 passes through the cross arm of the T-shaped pipe, the end of the vertical support rib 23 away from the insertion tip 232 is inserted into the long arm, and the connecting rib 22 is connected to the vertical support rib 23. Further, the connection part of the connecting piece 221 and the connecting rib 22 or the vertical support rib 23 is fixed by welding, and the arrangement further strengthens the connection firmness degree of the connecting piece 221 and the connecting rib 22 or the vertical support rib 23.

Foretell construction strengthening's slip casting composite foundation who rectifies still includes concrete foundation reinforcing platform 2, concrete foundation reinforcing platform 2 passes through concrete placement and forms, it is fixed through concreting between the terminal surface of the great one end of bearing stake 21 and concrete foundation reinforcing platform 2, under concrete foundation reinforcing platform 2 and bearing stake 21's fixed, the terminal surface position of a plurality of bearing stakes 21 can be on same level, make bearing stake 21 and foundation pile 1 can support the building in the composite foundation, the bearing effect of composite foundation to the building is better.

Further, a shear-resistant reinforcing layer 3 is poured on the concrete foundation reinforcing platform 2, and a steel bar net rack 31 is embedded in the shear-resistant reinforcing layer 3. The rebar grid 31 comprises longitudinal bars 311 and transverse bars 312, the transverse bars 312 and the longitudinal bars 311 are stacked in a staggered mode, and the staggered stacking positions of the transverse bars 312 and the longitudinal bars 311 are connected through fasteners. In particular, the fastener may be a hoop or a wire. The iron wire will indulge muscle 311 and horizontal muscle 312 cramp for it is difficult to separate when the building is fixed between indulging muscle 311 and the horizontal muscle 312.

The longitudinal ribs 311 and the transverse ribs 312 can be laid in multiple layers, the longitudinal ribs 311 and the transverse ribs 312 laid up vertically are connected through the vertical ribs 313, the joints between the vertical ribs 313 and the longitudinal ribs 311 or the transverse ribs 312 can be hooped or welded and fixed through iron wires, the tensile capacity of the shear-resistant reinforcing layer 3 can be enhanced through the multiple layers, and therefore the shear-resistant reinforcing layer 3 has a good effect in the aspect of shear resistance.

The implementation principle of the embodiment is as follows: during construction, the foundation pile 1 is driven into the soil body, liquid slurry is poured into the grouting hole 101 of the foundation pile 1 by using a high-pressure sprinkling irrigation method, part of the liquid slurry flows out of the slurry fixing hole 102, and the liquid slurry impacts the soil body under pressure and is mixed with the soil body. After the liquid slurry is solidified, soil mass on the peripheral side of the foundation pile 1 and the liquid slurry form a whole, so that the composite foundation can be reinforced; vertical support ribs 23 are embedded between the foundation piles 1, insertion tip ends 232 of the vertical support ribs 23 are inserted into soil, connecting ribs 22 penetrate through bearing piles 21 fixed on the foundation piles 1, and the connecting ribs 22 and one ends of the vertical support ribs 23 far away from the insertion tip ends 232 are fixed; one end of the bearing pile 21 far away from the foundation pile 1 is fixed with the concrete foundation reinforcing platform 2, the shear-resistant reinforcing layer 3 is further poured and fixed on the concrete foundation reinforcing platform 2, and the reinforcing steel bar net rack 31 is buried in the shear-resistant reinforcing layer 3. Foretell setting can consolidate composite foundation, reduces the secondary and subsides, is difficult for causing destruction to original support ground simultaneously.

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. The utility model provides a slip casting composite foundation who rectifies, its characterized in that: the grouting pile comprises a foundation pile (1) inserted into the soil, grouting holes (101) for liquid cement grouting penetrate through two ends of the foundation pile (1) in the length direction, a plurality of cement fixing holes (102) are formed in the side face of the foundation pile (1), and the cement fixing holes (102) are filled with cement after the cement is solidified.

2. The grouting composite foundation for building reinforcement and deviation rectification according to claim 1, characterized in that: still include concrete foundation stabilization platform (2), the one end that foundation pile (1) is close to ground is provided with bearing stake (21), bearing stake (21) are fixed through concrete placement with foundation pile (1), it is fixed through concreting between bearing stake (21) and concrete foundation stabilization platform (2).

3. The grouting composite foundation for building reinforcement and deviation rectification according to claim 2, wherein: be provided with between bearing stake (21) splice bar (22), splice bar (22) run through in bearing stake (21).

4. The grouting composite foundation for building reinforcement and deviation rectification according to claim 3, wherein: vertical support ribs (23) are arranged among the foundation piles (1) at intervals, the length direction of the vertical support ribs (23) is consistent with that of the foundation piles (1), and one ends of the vertical support ribs (23) are connected with the connecting ribs (22).

5. The grouting composite foundation for building reinforcement and deviation rectification according to claim 4, wherein: the periphery of the vertical support rib (23) is provided with a thread section (231), and one end of the vertical support rib (23) is provided with an insertion tip (232) which is convenient to insert into soil.

6. The grouting composite foundation for building reinforcement and deviation rectification according to claim 2, wherein: bearing stake (21) are the round platform form, the less terminal surface of bearing stake (21) is fixed with foundation pile (1), the great terminal surface of bearing stake (21) and concrete foundation reinforcement platform (2) butt.

7. The grouting composite foundation for building reinforcement and deviation rectification according to claim 2, wherein: concrete foundation consolidates platform (2) and has pour reinforcing layer (3) that shears, reinforcing bar rack (31) have been buried underground in reinforcing layer (3) that shears.

8. The grouting composite foundation for building reinforcement and deviation rectification according to claim 7, wherein: reinforcing bar rack (31) is including indulging muscle (311) and horizontal muscle (312), horizontal muscle (312) with indulge muscle (311) crisscross setting, horizontal muscle (312) is connected through the fastener with the crisscross department of indulging muscle (311).