CN217500201U

CN217500201U - Hammering steel pipe pile construction system

Info

Publication number: CN217500201U
Application number: CN202221051690.XU
Authority: CN
Inventors: 杨砚宗; 王涛; 郭俊杰
Original assignee: Shanghai Changkai Geotechnical Engineering Co Ltd
Current assignee: Shanghai Changkai Geotechnical Engineering Co Ltd
Priority date: 2022-05-05
Filing date: 2022-05-05
Publication date: 2022-09-27
Anticipated expiration: 2032-05-05

Abstract

The utility model provides a steel pipe pile hammering construction system, which comprises a steel pipe pile tip, an outer sleeve, a cylindrical hammer, a fixed pulley, a steel wire rope, a pile frame and a winch; an outer sleeve is welded on the top of the pile tip of the steel pipe pile, and high-strength grouting material with a preset height is paved at the bottom in the pile tip of the steel pipe pile; an existing building is provided with a pile hole, and the pile tip of a steel pipe pile is placed in the pile hole; the pile frame is arranged beside the pile hole, and the fixed pulley is arranged on the pile frame; the steel wire rope is erected on the fixed pulley, one end of the steel wire rope is connected with the winch, and the other end of the steel wire rope is connected with the cylindrical hammer; the columnar hammer is arranged right above the pile tip of the steel pipe pile, and the diameter of the columnar hammer is smaller than the inner diameter of the pile tip of the steel pipe pile. The utility model discloses a hammer steel-pipe pile construction system, under the limited circumstances in job site space or under the existing building can't provide sufficient counter-force or can't provide the condition of counter-force at all, still can carry out the steel-pipe pile sinking construction.

Description

Hammering steel pipe pile construction system

Technical Field

The utility model relates to a building engineering technical field especially relates to a hammer steel-pipe pile construction system.

Background

At present, most of existing buildings are subjected to foundation reinforcement by anchor rod static pressure piles for construction, and the existing buildings are required to provide sufficient counter force for the construction of the anchor rod static pressure piles.

But to most old-fashioned buildings, can't provide the counter-force at all, if adopt with pre-buried stock after the original basis is abolished, newly-increased raft's method, not only can have the risk that causes secondary destruction to existing building structure safety, newly-increased raft still has intensity not enough risk of being pulled apart moreover.

Under the condition that the existing building cannot provide enough counter force or cannot provide counter force at all, how to efficiently, quickly and safely carry out the construction of reinforcing the foundation of the existing building is still to be solved.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model provides a hammering steel pipe pile construction system, which can carry out steel pipe pile sinking construction under the condition of limited space of a construction site; when the existing building can not provide enough counter force or can not provide counter force at all, the steel pipe pile sinking construction can be carried out.

In order to achieve the purpose, the utility model provides a steel pipe pile hammering construction system, which comprises a steel pipe pile tip, a plurality of outer sleeves, a cylindrical hammer, a plurality of fixed pulleys, a steel wire rope, a pile frame and a winding machine; the outer sleeve is welded to the top of the pile tip of the steel pipe pile, and high-strength grouting material with preset height is paved at the bottom in the pile tip of the steel pipe pile; an existing building is provided with a pile hole, and the pile tip of the steel pipe pile is placed in the pile hole; the pile frame is arranged beside the pile hole, and the fixed pulley is arranged on the pile frame; the steel wire rope is erected on the fixed pulley, one end of the steel wire rope is connected with the winch, and the other end of the steel wire rope is connected with the cylindrical hammer; the columnar hammer is arranged right above the pile tip of the steel pipe pile, and the diameter of the columnar hammer is smaller than the inner diameter of the pile tip of the steel pipe pile.

Preferably, the device also comprises a guide rod and an ejection device; the guide rod is arranged along the central axis of the pile tip of the steel pipe pile, and the top end of the guide rod is connected to the pile frame; a guide hole is formed in the middle of the cylindrical hammer and is freely and slidably sleeved outside the guide rod through the guide hole; the ejection device is fixed on the pile frame or the guide rod right above the cylindrical hammer.

Preferably, a plurality of subsequent piles are further included; the subsequent pile section at the bottommost part is welded with the pile tip of the steel pipe pile through the outer sleeve; when the pile comprises at least two subsequent piles, the adjacent two subsequent piles are welded through the outer sleeve.

Preferably, the preset height is 50 cm.

The utility model discloses owing to adopted above technical scheme, make it have following beneficial effect:

through the matching of the pile tip of the steel pipe pile, the cylindrical hammer, the steel wire rope and the winch; the utility model discloses require extremely low to experimental place space, do not receive the place space restriction, under the limited condition in existing building basement space, can carry out existing building foundation reinforcement construction. Just the utility model discloses need not to carry on pre-buried, after plant the stock or newly-increased raft board, application range is wider, especially to the existing building foundation reinforcement that can't provide sufficient counter-force or can't provide the counter-force at all more suitable, can accomplish the steel-pipe pile construction that the stock static pressure construction method can't be accomplished, safe and reliable.

The utility model discloses be different from general hammering steel-pipe pile construction method, be provided with jettison device, can provide different initial velocities for the cylindricality hammer, can receive great impact force when the initial soil body that gets into of steel-pipe pile.

The utility model discloses the whereabouts direction of control weight that the guide arm can be fine, the stake point atress is even, also can effectually guarantee the steel-pipe pile straightness that hangs down simultaneously.

The pile tip is filled with high-strength grouting material, so that the strength of the pile tip is enhanced, and the pile tip and the pile body are prevented from being separated.

Drawings

Fig. 1 is a schematic structural view of a hammered steel pipe pile construction system in a first construction state according to an embodiment of the present invention;

fig. 2 is the utility model discloses a hammering steel-pipe pile construction system's of second construction state structural schematic diagram.

Detailed Description

The following description of the preferred embodiments of the present invention will be given with reference to the accompanying drawings, fig. 1 and 2, and will make the functions and features of the present invention better understood.

Referring to fig. 1 and 2, a steel pipe pile hammering construction system according to an embodiment of the present invention includes a steel pipe pile toe 1, a plurality of outer sleeves 4, a cylindrical hammer 6, a plurality of fixed pulleys 8, a steel wire rope 9, a pile frame 10, and a winch 11; an outer sleeve 4 is welded on the top of the steel pipe pile tip 1, and a high-strength grouting material 2 with a preset height of 50cm is laid at the bottom in the steel pipe pile tip 1; an existing building is provided with a pile hole 3, and a pile tip 1 of a steel pipe pile is placed in the pile hole 3; the pile frame 10 is arranged beside the pile hole 3, and the fixed pulley 8 is arranged on the pile frame 10; the steel wire rope 9 is erected on the fixed pulley 8, one end of the steel wire rope 9 is connected with the winch 11, and the other end of the steel wire rope 9 is connected with the cylindrical hammer 6; the columnar hammer 6 is arranged right above the steel pipe pile tip 1, and the diameter of the columnar hammer 6 is smaller than the inner diameter of the steel pipe pile tip 1.

The ejection device also comprises a guide rod 5 and an ejection device 7; the guide rod 5 is arranged along the central axis of the pile tip 1 of the steel pipe pile, and the top end of the guide rod is connected to the pile frame 10; a guide hole is formed in the middle of the cylindrical hammer 6 and is freely and slidably sleeved outside the guide rod 5 through the guide hole; the ejection device 7 is fixed on the pile frame 10 or the guide rod 5 right above the cylindrical hammer 6.

Also comprises a plurality of subsequent piles 12; a subsequent pile section 12 at the bottommost part is welded with the pile tip 1 of the steel pipe pile through the outer sleeve 4; when at least two subsequent piles 12 are included, two adjacent subsequent piles 12 are welded by an outer sleeve 4.

The utility model discloses hammer steel-pipe pile construction system, its construction method is as follows:

(1) pile tip manufacturing and processing

Referring to fig. 1, a pile tip 1 of the steel pipe pile is manufactured, and an outer sleeve 4 is welded; paving 50cm of high-strength grouting material 2 at the bottom of the pile tip 1 of the steel pipe pile, and maintaining to the designed strength;

(2) bottom plate opening

Pile holes 3 are arranged at corresponding positions of the existing building according to the pile position arrangement drawing;

(3) pile sinking equipment installation

Installing a pile frame 10 of pile sinking equipment beside a corresponding pile hole 3, and synchronously installing a fixed pulley 8, a steel wire rope 9, a winch 11, an ejection device 7 and a cylindrical hammer 6;

(4) pile tip positioning

Putting the processed steel pipe pile tip 1 into the drilled pile hole 3, installing a guide rod 5, and adjusting the verticality;

(5) pile sinking

In the pile sinking process, a constructor operates the winch 11, the cylindrical hammer 6 obtains a certain initial speed through the ejection device 7, and the cylindrical hammer 6 impacts the high-strength grouting material through the guide rod 5 to enable the pile tip 1 of the steel pipe pile to move downwards; then, operating the winch 11, resetting the cylindrical hammer 6 through the steel wire rope 9, repeating the operation, completing pile sinking of the pile tip 1 of the steel pipe pile, and increasing the length of the guide rod 5 in real time according to actual conditions in the pile sinking process;

(6) pile hanging and splicing

And hoisting the subsequent pile sections 12 to the position right above the pile tip 1 of the steel pipe pile, and welding the subsequent pile sections with the pile tip 1 of the steel pipe pile through the outer sleeve 4.

(7) Pile hanging and splicing

Repeating the step (5) to finish the pile sinking of the subsequent pile sections 12; and (5) sequentially repeating the step (6) and the step (5) to finish the pile sinking of the subsequent pile sections 12 until the designed pile length is reached, and finishing the pile sinking.

The present invention has been described in detail with reference to the embodiments shown in the drawings, and those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details of the embodiments should not be construed as limitations of the invention, which are intended to be covered by the following claims.

Claims

1. A steel pipe pile hammering construction system is characterized by comprising a steel pipe pile tip, a plurality of outer sleeves, a cylindrical hammer, a plurality of fixed pulleys, a steel wire rope, a pile frame and a winding machine; the outer sleeve is welded to the top of the pile tip of the steel pipe pile, and high-strength grouting material with preset height is paved at the bottom in the pile tip of the steel pipe pile; an existing building is provided with a pile hole, and the pile tip of the steel pipe pile is placed in the pile hole; the pile frame is arranged beside the pile hole, and the fixed pulley is arranged on the pile frame; the steel wire rope is erected on the fixed pulley, one end of the steel wire rope is connected with the winch, and the other end of the steel wire rope is connected with the cylindrical hammer; the columnar hammer is arranged right above the pile tip of the steel pipe pile, and the diameter of the columnar hammer is smaller than the inner diameter of the pile tip of the steel pipe pile.

2. The hammered steel pipe pile construction system according to claim 1, further comprising a guide rod and an ejector; the guide rod is arranged along the central axis of the pile tip of the steel pipe pile, and the top end of the guide rod is connected to the pile frame; a guide hole is formed in the middle of the cylindrical hammer and is freely and slidably sleeved outside the guide rod through the guide hole; the ejection device is fixed on the pile frame or the guide rod right above the cylindrical hammer.

3. The hammered steel pipe pile construction system according to claim 2, further comprising a plurality of subsequent sections of piles; the subsequent pile section at the bottommost part is welded with the pile tip of the steel pipe pile through the outer sleeve; when the pile comprises at least two subsequent piles, the adjacent two subsequent piles are welded through the outer sleeve.

4. The hammered steel pipe pile construction system according to claim 3, wherein the preset height is 50 cm.