CN203846478U - Composite foundation with tire-gravel drainage piles - Google Patents

Abstract

The utility model discloses a composite foundation with tire-gravel drainage piles. The composite foundation comprises a plurality of pile bodies. Waste tires which can provide radial constraint force to the inside of the pile bodies are arranged on the outsides of the pile bodies, gravel is accommodated inside the waste tires, and drainage holes which are used for draining water in the gravel inside the tires are preliminarily formed in the tires. The diameter of each drainage hole is 10mm, and the spacing among the drainage holes is 100mm. The gravel is graded gravel, the maximum grain size of the gravel is smaller than 100mm, and the mud content of the gravel is not higher than 5%. The pile diameters of the pile bodies of the tire-gravel piles are equal to the diameters of the tires, and the pile spacing is 3-5 times each pile diameter. The lengths of the pile bodies range from 4m to 30m. The composite foundation has the advantages that the mechanics and deformation compatibility of gravel piles can be improved by the aid of the waste tires, so that the bearing capacity of the pile bodies and the bearing capacity of the composite foundation can be improved; radial deformation of the gravel can be constrained by the tires, and accordingly vertical deformation can be reduced; the composite foundation brings convenience for constructing the pile bodies, and the composite foundation is high in tube drawing speed as compared with the gravel piles.

Description

Tire-gravel drainage pile composite foundation

Technical field

The utility model belongs to field of civil engineering, relates to a kind of tire-gravel drainage pile composite foundation.

Background technology

Broken stone pile and Experiment of Sand Column Composite Foundation are a kind of processing methods that soft foundation is conventional, can be used to reinforce sand, silt foundation, and the bearing capacity of increase ground, reduces settling amount, prevents the generation of earthquake liquefaction, can also increase the resistance to overturning of weak soil simultaneously.But broken stone pile and sand pile bearing capacity of single pile and Bearing Capacity of Composite Foundation are lower, and broken stone pile and Experiment of Sand Column Composite Foundation be while destroying, and majority is that pile body first destroys, and is only afterwards comprehensive destruction of composite foundation.The destruction of pile body is expansion damage mostly, this is because incohesive existence between broken stone pile or sand pile pellet, only relying on stake to press around keeps it to bear the ability of load, under the effect of load, be positioned at the confined pressure that the pile peripheral earth of shallow surface provides too small, be not enough to retrain pile body opposing vertical load and keep geometry constant, now pile body is just likely broken through the weak spot of lateral pressure deficiency and is caused pile body expansion damage.Therefore, no matter top soil rigidity size of granular pile, in the time that confined pressure is not enough, all may there is pile body expansion damage in discrete material pile.

Deflection is greatly also a defect of granular pile, in discrete material pile composite foundation, because the ability of pile body opposing lateral deformation itself is very little, so this class composite foundation can produce radial deformation after being vertically subject to load action, pile peripheral earth can provide certain radial constraint, can be broken stone pile certain radial constraint is provided, but pile peripheral earth opposing horizontal movement itself is limited in one's ability, when construction, the disturbance meeting of pile peripheral earth is further weakened the radial constraint effect of the soil body, cause the distortion of the discrete material pile such as broken stone pile or sand pile to want specific rigidity stake large.

Along with the develop rapidly of auto industry and transportation, junked tire is more and more in addition, forms black rubbish, causes black pollution.

Utility model content

In order to address the above problem, the utility model proposes a kind of tire-replacement stone pile composite foundation.

The technical solution adopted in the utility model is as follows:

A kind of tire-gravel drainage pile composite foundation, comprise some pile bodies, described pile body outside is the junked tire that radial constraint power is provided for its inside, and the inside of described junked tire is loaded with rubble, and on described tire, is prefabricated with to the drain hole of rubble draining that is arranged at inside.

Described drain hole is that diameter is 10mm, and the spacing between described drain hole is 100mm.

Described rubble adopts graded broken stone, and maximum particle diameter is less than 50mm, and mud content is not more than 5%.

Described pile body tire-broken stone pile stake footpath is diameter of tyres, and pilespacing is doubly stake footpath of 3-5.

The length of described pile body is 4-30m.

The beneficial effects of the utility model are as follows:

Utilize junked tire to improve broken stone pile mechanics and compatibility of deformation, strengthened the bearing capacity of pile body and the bearing capacity of composite foundation, the radial deformation of tire constraint rubble, has reduced vertical deformation, be the construction of the pile body condition that offers convenience, pipe-pulling speed is faster than broken stone pile simultaneously.Can not produce the disease of necking down and broken pile.Junked tire parcel broken stone pile forms gravel drainage pile and has environmental protection, twice laid, and speed of application is fast, and cost is low, and discharging consolidation is effective, and pile body settling amount is little, single pile and Bearing Capacity of Composite Foundation advantages of higher.

Brief description of the drawings

Fig. 1 is tire-rubble/sand drainage pile schematic diagram;

In figure: 1 pile body, 2 rubbles, 3 junked tires, 4 drain holes.

Detailed description of the invention

Below in conjunction with accompanying drawing and example, the utility model is described in further detail

As shown in Figure 1, a kind of tire-gravel drainage pile composite foundation, comprises pile body 1, and described pile body outside is junked tire 3, and outer tire provides radial constraint for rubble 2.Meanwhile, prefabricated drain hole 4 in outer tire, can be to rubble partial drainage.2 of rubbles that applied external constraint are modified as half firm half flexible pile by granular pile.Accelerate the consolidation settlement of soft foundation, improve the bearing capacity of composite foundation, reduce settlement after construction.

Drain hole 4 for diameter be 10mm, the spacing between described drain hole is 100mm.

Rubble 2 adopts graded broken stone, and maximum particle diameter is less than 100mm, and mud content is not more than 5%.

Pile body tire-broken stone pile stake footpath is diameter of tyres, and pilespacing is doubly stake footpath of 3-5.

The length of pile body 1 is 4-30m.

Tire can provide very high radial constraint for inner rubble, improve broken stone pile load, the especially distortion of top pile body of restricted internal rubble pile body, thereby make the existing high supporting capacity of composite foundation, there is again strong water permeability, can be in the performance that improves broken stone pile in mechanics and compatibility of deformation.The utility model had both utilized junked tire, again for the construction of composite foundation has brought facility.

Claims (1)

1. tire-gravel drainage pile composite foundation, comprise some pile bodies, it is characterized in that: described pile body outside is the junked tire that radial constraint power is provided for its inside, the inside of described junked tire is loaded with rubble, and on described tire, is prefabricated with to the drain hole that is arranged at inner rubble draining;

Described drain hole is that diameter is 10mm, and the spacing between described drain hole is 100mm;

Described rubble adopts graded broken stone, and maximum particle diameter is less than 50mm, and mud content is not more than 5%;

Described pile body tire-broken stone pile stake footpath is diameter of tyres, and pilespacing is doubly stake footpath of 3-5;

The length of described pile body is 4-30m.