CN201232181Y

CN201232181Y - Permeable structure of rigid drainage pile

Info

Publication number: CN201232181Y
Application number: CNU2008200379060U
Authority: CN
Inventors: 梁钰泽; 梁闽
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-06-05
Filing date: 2008-06-05
Publication date: 2009-05-06
Anticipated expiration: 2018-06-05

Abstract

The utility model relates to a water permeable structure for a rigid drainage pile, comprising a prefabricated permeable concrete pipe. An axial through hole is arranged on the prefabricated permeable concrete pipe; at least one axial first drainage groove is arranged on the vertical face of the prefabricated permeable concrete pipe; a second drainage groove is arranged on at least one of the upper end face and the lower end face of the prefabricated permeable concrete pipe; the position of the second drainage groove is corresponding to that of the first drainage groove; one end of the second drainage groove is communicated with the first drainage groove correspondingly and the other end of the second drainage groove is communicated with the through hole and provided with a permeable film continuously covered on the first drainage groove, and the permeable film is concave to the vertical face of the drainage pile. When in use, the water permeable structure is arranged in the soft oil layer through foundation drilling or piling pipe, water in the soft oil layer enters into the first drainage groove through the permeable film and then enters into the second drainage groove from the first drainage groove, and water in the through hole is pumped through a vacuum pump. When used, the water permeable structure can improve and fasten the soft oil layer around the pile effectively, thereby effectively increasing the bearing capacity of the foundation.

Description

The permeable structure of rigid drainage pile

Technical field

The utility model relates to the rigid pile that a kind of consolidated subsoil is used, especially a kind of permeable structure of rigid drainage pile.

Background technology

Rigid pile composite foundation has the application experience (seeing among " building lot treatment technology standard " JGJ79-2002 " CFG stake method ") of more than ten years, it is long that it has effective length, be out of shape little, can give full play to the bearing capacity of inter-pile soil and stake end soil, the Bearing Capacity of Composite Foundation height, than more advantages such as pile foundation cost are low, thereby extensively promoted the use of.But rigid pile composite foundation has distortion radical in deep soft soil; Rigid pile mostly is the immersed tube bored or pressure filling in situ concrete pile of low grade, in the weak soil layer construction soil layer mesopore water pressure is increased suddenly cause earth heaving and with stake pull off, pile concrete easily produces undergauge, segregation, setting of rigid pile not only do not have improving effect to all weak soil layers of stake, there is perturbation action to reduce defectives such as stake side resistance, therefore less employing in soft foundation on the contrary.

Summary of the invention

In order to overcome above-mentioned defective, the utility model provides a kind of permeable structure of rigid drainage pile, the rigid drainage pile of this permeable structure of tool is adapted at using in the deep soft soil, can effectively improve reinforcing to the weak soil layer in stake week, thereby can effectively improve bearing capacity of foundation soil.

The utility model for the technical scheme that solves its technical problem and adopt is:

A kind of permeable structure of rigid drainage pile, comprise prefabricated permeable concrete pipe, prefabricated permeable concrete pipe is provided with axial through hole, the facade of prefabricated permeable concrete pipe is provided with at least one and is the first axial rhone, on the precast concrete pipe, at least one end face in the lower surface is provided with second rhone, the position of second rhone is corresponding with first rhone, second rhone, one end correspondence communicates in first rhone, the second rhone other end communicates in through hole, be provided with a water permeable membrane, water permeable membrane is covered on first rhone continuously, and water permeable membrane is depressed in the facade of drainage pile.

Water permeable membrane also can be covered on first rhone and second rhone continuously, and water permeable membrane is depressed in the facade and the corresponding upper and lower end face of drainage pile.

Be provided with the plastic draining groove, the plastic draining groove shape and the first rhone shape are complementary, and the plastic draining groove places first rhone continuously, and water permeable membrane is covered on the plastic draining groove continuously.(also the plastic draining groove can be set in certain second rhone)

Evenly be interval with three first rhones on the facade of prefabricated permeable concrete pipe, be equipped with three second rhones on the upper and lower end face of prefabricated permeable concrete pipe, first and second rhone of correspondence position communicates.

The beneficial effects of the utility model are: this routine use is: (piling is managed in this way by foundation drilling or piling pipe this example to be placed the weak soil layer, then earlier this example is placed a pipe, then the stake pipe is extracted), determine that according to the actual grade needs (this example can be divided into plurality of sections and seal from beginning to end and be connected composition for the effective length of required example, in order to keep better sealing of this example, first section under the soil face is used fluid-tight prefabricated hollow concrete pipe, the butt joint that communicates of the prefabricated pervious concrete seal of tube of fluid-tight then prefabricated hollow concrete Guan Zaiyu), water in the weak soil layer enters into first rhone by water permeable membrane, enter the through hole through second rhone from first rhone again, the pore water pressure that can dissipate fast like this and increase suddenly in the soil layer, make ground be difficult for protuberance, water in the through hole is extracted out by vacuum pump again, can force to reduce the water content of weak soil layer between stake and the effective stress that in the stratum, forms fast, thereby ground is formed precompressed, rear screed is beaten soil layer, meet the requirements until bearing capacity of foundation soil, just stop pumping and ram and beat soil layer.The use that therefrom can find out this example can effectively improve reinforcing to the weak soil layer in stake week, thereby can effectively improve bearing capacity of foundation soil.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the amplification plan view of Fig. 1;

Fig. 3 is a use schematic diagram of the present utility model.

The specific embodiment

Embodiment: a kind of permeable structure of rigid drainage pile, comprise prefabricated permeable concrete pipe 2, prefabricated permeable concrete pipe is provided with axial through hole 12, the facade of prefabricated permeable concrete pipe is provided with at least one and is the first axial rhone 3, on the precast concrete pipe, at least one end face in the lower surface is provided with second rhone 4, the position of second rhone is corresponding with first rhone, second rhone, one end correspondence communicates in first rhone, the second rhone other end communicates in through hole, be provided with a water permeable membrane 9, water permeable membrane is covered on first rhone continuously, and water permeable membrane is depressed in the facade of drainage pile.

Use of the present utility model is:

(piling is managed in this way by foundation drilling or piling pipe this example to be placed the weak soil layer, then earlier this example is placed a pipe, then the stake pipe is extracted), determine that according to the actual grade needs (this example can be divided into plurality of sections and seal from beginning to end and be connected composition for the effective length of required example, in order to keep better sealing of this example, first section under the soil face is used fluid-tight prefabricated hollow concrete pipe 1, the butt joint that communicates of the prefabricated pervious concrete seal of tube of fluid-tight then prefabricated hollow concrete Guan Zaiyu), water in the weak soil layer enters into first rhone by water permeable membrane, enter the through hole through second rhone from first rhone again, the pore water pressure that can dissipate fast like this and increase suddenly in the soil layer, make ground be difficult for protuberance, water in the through hole is extracted out by vacuum pump again, can force to reduce the water content of weak soil layer between stake and the effective stress that forms fast in the stratum, thereby ground is formed precompressed, rear screed is beaten soil layer, meet the requirements until bearing capacity of foundation soil, just stop pumping and ram and beat soil layer.The use that therefrom can find out this example can effectively improve reinforcing to the weak soil layer in stake week, thereby can effectively improve bearing capacity of foundation soil.

Claims

1. the permeable structure of a rigid drainage pile, comprise prefabricated permeable concrete pipe, it is characterized in that: prefabricated permeable concrete pipe is provided with axial through hole, the facade of prefabricated permeable concrete pipe is provided with at least one and is the first axial rhone, on the precast concrete pipe, at least one end face in the lower surface is provided with second rhone, the position of second rhone is corresponding with first rhone, second rhone, one end correspondence communicates in first rhone, the second rhone other end communicates in through hole, be provided with a water permeable membrane, water permeable membrane is covered on first rhone continuously, and water permeable membrane is depressed in the facade of drainage pile.

2. the permeable structure of rigid drainage pile according to claim 1, it is characterized in that: water permeable membrane is covered on first rhone and second rhone continuously, and water permeable membrane is depressed in the facade and the corresponding upper and lower end face of drainage pile.

3. the permeable structure of rigid drainage pile according to claim 1 and 2, it is characterized in that: be provided with the plastic draining groove, the plastic draining groove shape and the first rhone shape are complementary, and the plastic draining groove places first rhone continuously, and water permeable membrane is covered on the plastic draining groove continuously.

4. the permeable structure of rigid drainage pile according to claim 3, it is characterized in that: evenly be interval with three first rhones on the facade of prefabricated permeable concrete pipe, be equipped with three second rhones on the upper and lower end face of prefabricated permeable concrete pipe, first and second rhone of correspondence position communicates.