CN2104880U - Pile made of sand and crushed stone - Google Patents

Abstract

The utility model discloses a pile made of sand and rubble, comprising a rubble core 1 and a sand protective shell 2. The pile made of sand and rubble has the advantages that the pile has both the functions of a sand well and a rubble pile, and can overcome the defect that the sand well presents a flexible state and has no carrying capacity and the rubble pile has foundation settlement due to sheared breakdown.

Description

Pile made of sand and crushed stone

The utility model relates to a kind of stake with protective sleeve.

For improving the intensity of the soft ground that loosens the soil, sand drain and sand gutter are set in soil usually or broken stone pile is set.The former can make the moisture content in the soil discharge from sand drain and sand gutter, realizes earth consolidation, improves the intensity of ground; The latter can improve the supporting capacity of the soft ground that loosens the soil.But the sand drain ground is flexible state; No supporting capacity own, and the rubble in the broken stone pile directly contacts meeting generation shear failure with soil, makes the basis of building on broken stone pile produce bigger sedimentation, so the application of broken stone pile on soft soil is subjected to bigger restriction.

The purpose of this utility model is to provide a kind of having concurrently to make the fixed and raising supporting capacity of soft mellow soil, and can avoid the arenaceous shell broken stone pile of foundation settlement.

Fig. 1 builds a process schematic diagram for the arenaceous shell broken stone pile.

Fig. 2 is an arenaceous shell broken stone pile cross-sectional drawing.

Shown in Fig. 1 C, the design's arenaceous shell rubble stake is made up of rubble core 1 and sand containment vessel 2, and its medium sand containment vessel 2 is arranged in around the rubble core 1, by the steel sleeve extrusion modling of piling machine.

Build stake and adopt available coagulation soil pipe perfusion pile piling machinery to construct, as adopting vibrating type pile driver, paddle type mill pile driver and forced pile driver etc., implementation step is shown in Fig. 1.

Figure 1A squeezes into steel sleeve to projected depth on the stake position of determining, pour into sand in steel sleeve;

Figure 1B, steel sleeve is mentioned the formation sand pile behind the filling sand, puts shoe at the sand pile top, adopts the steel sleeve of band flapper pile tip, can save shoe, is pressed into steel sleeve again, around sand is depressed into by steel sleeve, forms sand containment vessel 2, follows toward steel sleeve and fills out the filling rubble;

Fig. 1 C mentions steel sleeve, forms the arenaceous shell broken stone pile, and its cross section as shown in Figure 2.

With prior art relatively, this programme has following advantage:

1, is provided with the sand containment vessel, has the sand drain effect, discharge moisture content in the soil body, make soil solidifying, improve foundation strength;

2, be provided with the rubble core, can significantly improve foundation capability;

3, owing to the existence of sand containment vessel, the rubble of rubble core does not directly contact with the soil body, prevents to produce shear failure, avoids foundation settlement.

Claims (1)

1. A kind of arenaceous shell broken stone pile is characterized in that it is made up of rubble core 1 and sand containment vessel 2, and its medium sand containment vessel 2 is arranged around rubble cores 1, by the steel sleeve extrusion modling of pile driver.

Images