CN111042130B

CN111042130B - Steel sheet pile

Info

Publication number: CN111042130B
Application number: CN201911366773.0A
Authority: CN
Inventors: 王爱民; 王飞; 李万通
Original assignee: Huai'an Architectural Design And Research Institute Co ltd
Current assignee: Huai'an Architectural Design And Research Institute Co ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2021-04-09
Anticipated expiration: 2039-12-26
Also published as: CN111042130A

Abstract

The invention relates to a steel sheet pile, one side of the steel sheet pile is provided with a scouring pipe vertically, and the other side is provided with a plurality of water return pipes; the lower end of the water return pipe is provided with a sharp-pointed end wall, and the end wall is provided with a water permeable hole; the inside swivelling joint that rotationally is provided with of wet return, the lower extreme of swivelling joint be with the acuate shape of the lower extreme end wall medial surface looks laminating of wet return to the lower extreme of swivelling joint has seted up a plurality of with the inlet opening that the hole is relative permeates water. Make the scouring water in the pile driving operation can be taken back by a large amount through setting up the wet return, reduced the reserve volume of pile driving operation water in the ground by a wide margin, effectively avoided the ground disorder.

Description

Steel sheet pile

Technical Field

The invention relates to a steel sheet pile.

Background

When the pit foundation is subjected to steel plate supporting operation, steel sheet piles for supporting are driven into a soil layer, the steel sheet piles are easy to bend and deform in the steel sheet pile operation process due to large soil layer resistance, and in order to reduce the soil layer resistance, the prior art has a friction resistance reducing treatment technology for the surface of the steel sheet piles, the technology needs to be implemented on the large-width surface of the steel sheet piles before piling every time, and the required workload is large; or adopt high-pressure squirt to wash the mode that the ground washed, but this scheme can pour into a large amount of water into to the ground, leads to the pile foundation to be disorderly, is unfavorable for follow-up operation, especially as shown in fig. 5, in actual operation, the water that washes the ground can concentrate on one side of steel sheet pile, leads to the soil texture softness of pile foundation both sides inconsistent completely, has strengthened the unstable factor of steel sheet pile more.

Disclosure of Invention

The invention aims to provide a steel sheet pile which is piled by adopting high-pressure water scouring, can avoid the disorder of a foundation caused by water for operation after construction, and is realized by the following technical scheme:

one side of the steel sheet pile is vertically provided with a scouring pipe, and the other side of the steel sheet pile is provided with a plurality of water return pipes; the lower end of the water return pipe is provided with a sharp-pointed end wall, and the end wall is provided with a water permeable hole; the inside swivelling joint that rotationally is provided with of wet return, the lower extreme of swivelling joint be with the acuate shape of the lower extreme end wall medial surface looks laminating of wet return to the lower extreme of swivelling joint has seted up a plurality of with the inlet opening that the hole is relative permeates water.

The steel sheet pile is further designed in that the lower end of the flushing pipe is a sharp blind end, and a plurality of flushing holes are formed in the side wall above the blind end; the bottom of the flushing pipe is elastically provided with a blocking block which is abutted against the blind end, the blocking block is positioned on the inner side of the flushing hole, and the flushing hole is opened when the blocking block is pressed to overcome the elasticity and move downwards.

The steel sheet pile is further designed in that the upper part of the rotating pipe penetrates through a buffer tank, and the upper part of the rotating pipe is connected with a driving motor; the side wall of the rotary pipe in the buffer box is provided with a water outlet hole, and the upper part of the buffer box is connected with an external slurry pump through a water discharge pipe.

The steel sheet pile is further designed in that a slurry outlet hole is formed in the side wall of the lower portion of the buffer box, and a sealing plug is filled in the slurry outlet hole.

The steel sheet pile is further designed in that the lower end of the flushing pipe is a sharp-pointed body in threaded connection with the pipe body, the upper end of the sharp-pointed body, which is located inside the flushing pipe, is provided with a guide hole, a spring is filled in the guide hole, and the blocking block is elastically connected to the spring.

The steel sheet pile is further designed in such a way that the flushing holes are arranged obliquely downwards.

The steel sheet pile is further designed in that the flushing pipe is fixedly arranged in the middle of one side of the steel sheet pile; and the two water return pipes are symmetrically distributed on the other side surface of the steel sheet pile.

The invention has the beneficial effects that:

the flushing water in the piling operation can be largely pumped back by arranging the water return pipe, so that the reserve volume of the water for the piling operation in the foundation is greatly reduced, the foundation disorder is effectively avoided, and certainly, the structural instability factor caused by possible small soil loss can be avoided by additionally arranging a pipeline in a mode of backfilling lime powder and the like; the water return pipe and the flushing pipe are arranged on two sides of the steel sheet pile, so that water flows from one side to the other side in the operation process, and the water is prevented from being diffused only on one side of the steel sheet pile; the rotary pipe is arranged in the water return pipe, and a shearing force is formed at the end part of the water return pipe, so that small-particle soil blocks can be damaged, and the rotary pipe is prevented from being blocked; the upper part of the rotation is arranged in the buffer tank, so that the water slurry extracted by the rotation pipe can be settled to form thicker slurry which can be used for backfilling; the inside blocking piece that sets up of flushing pipe, when need not erode the operation, no water pressure in the flushing pipe, then the blocking piece will erode the hole shutoff, can not influence follow-up operation.

Drawings

Fig. 1 is a schematic end view of an embodiment of the present invention.

Fig. 2 is a schematic side view of the embodiment.

FIG. 3 is a schematic view of the internal structure of the flush tube.

Fig. 4 is a schematic view of the internal structure of the return pipe.

Fig. 5 is a schematic diagram of a prior art structure.

Detailed Description

The invention is further illustrated by the following figures and examples in conjunction with the description:

a steel sheet pile is shown by combining figures 1, 2 and 4, one side of the steel sheet pile is vertically provided with a flushing pipe 1, and the other side of the steel sheet pile is provided with two water return pipes 2; the lower end of the water return pipe 2 is provided with a sharp-pointed end wall, and the end wall is provided with a water permeable hole 21; the inside rotatory pipe 22 that rotationally is provided with of return pipe, the lower extreme of rotatory pipe be with the acuate shape of the lower extreme end wall medial surface laminating mutually of return pipe to the lower extreme of rotatory pipe is seted up a plurality of with the relative inlet opening 23 in hole of permeating water.

When the device is used, the upper end of the flushing pipe is connected with a high-pressure water source along with downward impact of the pile hammer, and the upper part of the rotating pipe is connected with a negative pressure source to extract water at the bottom of the steel sheet pile while the rotating pipe rotates under the action of the driving motor.

As shown in fig. 3, the lower end of the flushing pipe 1 is a sharp blind end, and the side wall above the blind end is provided with a plurality of flushing holes 11; the bottom of the flushing pipe is elastically provided with a plugging block 12 which is abutted against the blind end, the plugging block is positioned on the inner side of the flushing hole, and the flushing hole is opened when the plugging block is pressed to overcome the elasticity and goes downwards. The flushing holes are arranged obliquely downwards.

Specifically, the lower extreme of flushing pipe is threaded connection at the sharp-pointed body of body, the guiding hole has been seted up to the upper end that the sharp-pointed body is located the flushing pipe inside, the guiding hole intussuseption is filled with spring 13, shutoff piece elastic connection in on the spring. The inside blocking piece that sets up of flushing pipe, when need not erode the operation, no water pressure in the flushing pipe, then the blocking piece will erode the hole shutoff, can not influence follow-up operation.

The upper part of the rotary pipe passes through a buffer box 24, and the upper part of the rotary pipe is connected with a driving motor 25; the side wall of the rotary pipe in the buffer tank is provided with a water outlet 26, and the upper part of the buffer tank is connected with an external slurry pump through a water drain pipe 27. During specific implementation, the driving motor can be driven by being connected to one side of the rotating pipe through the bevel gear structure, the rotating upper portion is arranged in the buffer box, water slurry pumped by the rotating pipe can be settled to form thick slurry, operation burden of the slurry pump can be relieved, and the slurry can be used for backfilling.

Correspondingly, the lower side wall of the buffer box is provided with a slurry outlet 28, and a sealing plug is filled in the slurry outlet.

Make the scouring water in the pile driving operation can be taken back by a large amount through setting up the wet return, reduced the reserve volume of pile driving operation water in the ground by a wide margin, effectively avoided the ground disorder, of course, the structural instability factor that arouses can be avoided the possible a small amount of soil loss by the way pipeline is avoided with modes such as backfill lime powder or backfill the mud that the buffer memory case was collected.

Claims

1. A steel sheet pile is characterized in that a scouring pipe is vertically arranged on one side of the steel sheet pile, and a plurality of water return pipes are arranged on the other side of the steel sheet pile; the lower end of the water return pipe is provided with a sharp-pointed end wall, and the end wall is provided with a water permeable hole; a rotating pipe is rotatably arranged in the water return pipe, the lower end of the rotating pipe is in a sharp shape which is attached to the inner side surface of the end wall of the lower end of the water return pipe, and a plurality of water inlet holes which are opposite to the water permeable holes are formed in the lower end of the rotating pipe; the upper part of the rotating pipe penetrates through a buffer box, and the upper part of the rotating pipe is connected with a driving motor; the side wall of the rotary pipe, which is positioned in the cache box, is provided with a water outlet hole, and the upper part of the cache box is connected with an external slurry pump through a water discharge pipe; the side wall of the lower part of the buffer box is provided with a slurry outlet hole, and a sealing plug is filled in the slurry outlet hole.

2. The steel sheet pile according to claim 1, wherein the lower end of the flushing pipe is a sharp blind end, and a plurality of flushing holes are formed in the side wall above the blind end; the bottom of the flushing pipe is elastically provided with a blocking block which is abutted against the blind end, the blocking block is positioned on the inner side of the flushing hole, and the flushing hole is opened when the blocking block is pressed to overcome the elasticity and move downwards.

3. The steel sheet pile according to claim 2, wherein the lower end of the flushing pipe is a sharp body which is screwed into the pipe body, the upper end of the sharp body, which is positioned inside the flushing pipe, is provided with a guide hole, the guide hole is filled with a spring, and the blocking block is elastically connected to the spring.

4. A steel sheet pile according to claim 2, characterised in that the flushing holes are arranged obliquely downwards.

5. The steel sheet pile according to claim 1, wherein the flushing pipe is fixedly arranged in the middle of one side of the steel sheet pile; and the two water return pipes are symmetrically distributed on the other side surface of the steel sheet pile.