CN112502135A - Steel pipe pile system and method - Google Patents

Abstract

The invention provides a steel pipe pile system and a method, which adopt a steel pipe pile, a steel plate telescopic mechanism and a driving mechanism, wherein the steel plate telescopic mechanism comprises a steel plate and a guide groove, the guide groove is arranged on the steel pipe pile, one end of the steel plate is connected with the driving mechanism, the other end of the steel plate extends into the guide groove, the other end of the steel plate can retract into the steel pipe pile along the guide groove or extend outwards along the guide groove and is inserted into a foundation outside the steel pipe pile under the action of the driving mechanism, and the steel plate telescopic mechanism and the driving mechanism are arranged on the basis of the existing steel pipe pile, so that after the steel pipe pile is forced to sink, the contact area between the steel pipe pile and the foundation is increased, the pre-piling time is shortened, and the settlement generated when a steel pipe pile system supports a building or a structure is effectively reduced. In addition, for some soft foundations, the steel pipe pile pressing depth can be reduced by adopting the form, and the plastic deformation of a pile head caused by frequent impact load is reduced.

Description

Steel pipe pile system and method

Technical Field

The invention belongs to the technical field of building construction, and relates to a steel pipe pile reinforcing technology used in the civil construction field such as building foundations, bridge foundations and the like.

Background

Steel pipe piles are used for supporting civil buildings and structures such as buildings, roads, and bridges, and are constructed on foundations. At this time. For example, a press machine is used to continuously apply a force to the steel pipe pile to press the steel pipe pile into the ground to a desired depth, and a full-rotary mechanical rotary press-in device is used to rotatably press the steel pipe pile into the ground.

In the prior art, the steel pipe pile is generally pressed into the ground by adopting an intermittent force application method in the pile sinking process, the intermittent force application means that once acting force is applied to the steel pipe pile, the steel pipe pile sinks for a distance, then second acting force is applied to the steel pipe pile at intervals, and the process is circulated until the sinking depth of the steel pipe pile meets the requirement.

Disclosure of Invention

The invention aims to provide a steel pipe pile system and a method, which are characterized in that a steel plate telescopic mechanism and a driving mechanism are arranged on the basis of the existing steel pipe pile, so that after the steel pipe pile is forced and driven to sink, the contact area between the steel pipe pile and a foundation is increased, the pre-piling and loading time is shortened, and the settlement generated when the steel pipe pile system supports a building or a structure is effectively reduced.

In order to solve the technical problems, the invention provides the following technical scheme:

a steel pipe pile system comprising: steel-pipe pile, steel sheet telescopic machanism and actuating mechanism, the steel sheet telescopic machanism includes steel sheet and guide slot, the guide slot set up in on the steel-pipe pile, the one end and the actuating mechanism of steel sheet are connected, the other end of steel sheet stretches into inside the guide slot, under actuating mechanism's effect the other end of steel sheet can be along the guide slot retract to the steel-pipe pile in or along the guide slot outwards extend and insert to the ground in the steel-pipe pile outside.

Preferably, in the above steel pipe pile system, the driving mechanism includes a gear, a rack, a crank and a connecting rod, the rack is disposed in the steel pipe pile and located on a central shaft of the steel pipe pile, the gear is engaged with the rack, one end of the crank is coaxially connected with the central shaft of the gear, the other end of the crank extends to the outside of the steel pipe pile for holding by an applicator, the upper end of the connecting rod is hinged to the lower end of the rack, one end of the steel plate is hinged to the lower end of the connecting rod, the rack can move up and down by rotating the crank, and the up and down movement of the rack can drive the steel plate to retract into the steel pipe pile along the guide groove or extend outwards along the guide groove and insert into a foundation outside of the steel.

Preferably, in the above steel pipe pile system, the number of the connecting rods is two, the two connecting rods are symmetrically arranged on two sides of the rack, an included angle between the two connecting rods can change along with the up-down movement of the rack, the number of the steel plate telescopic mechanisms is two, and the two steel plate telescopic mechanisms are symmetrically arranged on the steel pipe pile.

Preferably, in the above steel pipe pile system, the system further includes two connecting plates, the upper ends of the connecting plates are respectively hinged to the lower ends of the corresponding connecting rods, a plurality of steel plate telescopic mechanisms are respectively arranged below the two steel plate telescopic mechanisms, one ends of the steel plates in the steel plate telescopic mechanisms are hinged to the corresponding connecting plates, and the other ends of the steel plates extend into the corresponding guide grooves.

Preferably, in the above steel pipe pile system, the steel plate expansion mechanisms adjacent to each other in the vertical direction are provided at equal intervals.

Preferably, in the above steel pipe pile system, one end of the steel plate is hinged to the connecting rod or the connecting plate through a column hinge, and the rack is hinged to the connecting rod through a ball hinge.

Preferably, in the above steel pipe pile system, the length of the steel plate is 1.5 to 2 times the radius of the steel pipe pile, and the thickness of the steel plate is 1/5 to 1/8 of the depth of the guide groove.

Preferably, in the above steel pipe pile system, two sides of the gear are respectively provided with one crank.

Preferably, in the above steel pipe pile system, a steel pipe pile head is provided at an upper end of the steel pipe pile, and a pile shoe is provided at a lower end of the steel pipe pile.

The invention also discloses a using method of the steel pipe pile system, which comprises the following steps:

step 1, preparing the steel pipe pile system;

step 2, sinking the steel pipe pile;

step 3, the gear drives the rack to move downwards by rotating the crank, so that the steel plate extends outwards along the guide groove and is inserted into the foundation on the outer side of the steel pipe pile;

step 4, after construction is completed, reversely rotating the crank to enable the gear to drive the rack to move upwards, and enabling the other end of the steel plate to retract into the steel pipe pile along the guide groove;

and 5, recovering the steel pipe pile system.

According to the technical scheme disclosed above, compared with the prior art, the invention has the following beneficial effects:

in summary, the steel pipe pile system and method provided by the invention adopt the steel pipe pile, the steel plate telescoping mechanism and the driving mechanism, the steel plate telescoping mechanism comprises the steel plate and the guide groove, the guide groove is arranged on the steel pipe pile, one end of the steel plate is connected with the driving mechanism, the other end of the steel plate extends into the guide groove, the other end of the steel plate can retract into the steel pipe pile along the guide groove or extend outwards along the guide groove and is inserted into the foundation outside the steel pipe pile under the action of the driving mechanism, and the steel plate telescoping mechanism and the driving mechanism are arranged on the basis of the existing steel pipe pile, so that after the steel pipe pile is forced to sink, the contact area between the steel pipe pile and the foundation is increased, the pre-pile loading time is shortened, and the settlement generated when the steel pipe pile system supports the building or the structure is effectively reduced. In addition, for some soft foundations, the steel pipe pile pressing depth can be reduced by adopting the form, and the plastic deformation of a pile head caused by frequent impact load is reduced.

Drawings

Fig. 1 is a schematic structural view of a steel pipe pile system according to the present invention.

Fig. 2 is one of internal sectional views of a steel pipe pile system according to the present invention.

Fig. 3 is a second internal sectional view of a steel pipe pile system according to the present invention.

Fig. 4 is a schematic view showing the connection of the connecting rod with the rack and the steel plate in the present invention.

Fig. 5 is a schematic view of the structure of the connecting rod of the present invention.

Fig. 6 is a side view schematic of fig. 5.

In the figure: 1-steel pipe pile, 2-steel plate, 3-guide groove, 4-gear, 5-rack, 6-crank, 7-connecting rod, 8-connecting plate, 9-column hinge, 10-spherical hinge, 11-steel pipe pile head, 12-pile shoe.

Detailed Description

The invention is described in further detail below with reference to the figures and specific examples. The technical contents and features of the present invention will be described in detail below with reference to the embodiments illustrated in the accompanying drawings. It is further noted that the drawings are in greatly simplified form and are not to precise scale, merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention. For convenience of description, the directions of "up" and "down" described below are the same as the directions of "up" and "down" in the drawings, but this is not a limitation of the technical solution of the present invention.

Referring to fig. 1 to 6, the present embodiment provides a steel pipe pile system, including: the steel pipe pile comprises a steel pipe pile 1, a steel plate 2 telescopic mechanism and a driving mechanism, wherein the steel plate 2 telescopic mechanism comprises a steel plate 2 and a guide groove 3, the guide groove 3 is formed in the steel pipe pile 1, one end of the steel plate 2 is connected with the driving mechanism, the other end of the steel plate 2 extends into the guide groove 3, the other end of the steel plate 2 can retract into the steel pipe pile 1 along the guide groove 3 or outwards extend along the guide groove 3 and be inserted into a foundation outside the steel pipe pile 1 under the action of the driving mechanism, and the steel plate 2 telescopic mechanism and the driving mechanism are arranged on the basis of the existing steel pipe pile 1, so that after the steel pipe pile 1 is driven to sink, the contact area between the steel pipe pile 1 and the foundation is increased, the pre-pile loading time is shortened, and the settlement generated when a steel pipe pile system supports a building or a structure is. In addition, for some soft foundations, the steel pipe pile 1 can be pressed into the ground in a reduced depth by adopting the mode, and the plastic deformation of a pile head caused by frequent impact load is reduced.

Preferably, in the above steel pipe pile system, the driving mechanism includes a gear 4, a rack 5, a crank 6 and a connecting rod 7, the rack 5 is disposed in the steel pipe pile 1 and located on a central axis of the steel pipe pile 1, the gear 4 is engaged with the rack 5, one end of the crank 6 is coaxially connected to the central axis of the gear 4, the other end of the crank 6 extends to the outside of the steel pipe pile 1 for a constructor to hold, the upper end of the connecting rod 7 is hinged to the lower end of the rack 5, one end of the steel plate 2 is hinged to the lower end of the connecting rod 7, the rack 5 can move up and down by rotating the crank 6, and the up and down movement of the rack 5 can drive the steel plate 2 to retract into the steel pipe pile 1 along the guide groove 3 or extend outward along the guide groove 3 into a foundation outside of the steel. By rotating the crank 6, the gear 4 drives the rack 5 to move downwards, so that the steel plate 2 extends outwards along the guide groove 3 and is inserted into the foundation outside the steel pipe pile 1; by rotating the crank 6 in the opposite direction, the gear 4 drives the rack 5 to move upwards, so that the other end of the steel plate 2 can retract into the steel pipe pile 1 along the guide groove 3.

In order to ensure that the two sides of the steel pipe pile 1 are uniformly stressed and the steel pipe pile 1 is more stably fixed in a foundation, preferably, in the steel pipe pile system, the number of the connecting rods 7 is two, the connecting rods are symmetrically arranged on the two sides of the rack 5, the size of an included angle between the two connecting rods 7 can be changed along with the up-and-down movement of the rack 5, the number of the steel plate 2 telescopic mechanisms is two, and the two steel plate 2 telescopic mechanisms are symmetrically arranged on the steel pipe pile 1.

Preferably, in the above-mentioned steel-pipe pile system, still include two connecting plates 8, the upper end of connecting plate 8 is articulated with the lower extreme of corresponding connecting rod 7 respectively, two steel sheet 2 telescopic machanisms's below is equipped with a plurality of steel sheet 2 telescopic machanisms respectively, steel sheet 2's among the steel sheet 2 telescopic machanism one end is articulated on corresponding connecting plate 8, the other end stretches into in the corresponding guide slot 3, through increasing the quantity of steel sheet 2 telescopic machanism, can further increase the area of contact of steel-pipe pile 1 and ground, shorten the time of piling in advance, the settlement that produces when effectively reducing steel-pipe pile system support building or structure.

Preferably, in the above steel pipe pile system, the steel plate 2 telescopic mechanisms adjacent to each other up and down are arranged at equal intervals, so that the stress on the two sides of the steel pipe pile 1 is more uniform, and the steel pipe pile 1 is more stably fixed in the foundation.

Preferably, in the above steel pipe pile system, one end of the steel plate 2 is hinged to the connecting rod 7 or the connecting plate 8 through a column hinge 9 to improve the connection stability between the steel plate 2 and the connecting rod 7, and the rack 5 is hinged to the connecting rod 7 through a ball hinge 10 to facilitate the rotation of the connecting rod 7 relative to the rack 5.

In order to smoothly retract the steel plate 2 into the steel pipe pile 1 and to make the protruding length of the steel plate 2 meet the requirement, it is preferable that in the above steel pipe pile system, the length of the steel plate 2 is 1.5 to 2 times the radius of the steel pipe pile 1, and the thickness of the steel plate 2 is 1/5 to 1/8 of the depth of the guide groove 3.

Preferably, in the above steel pipe pile system, the upper end of the steel pipe pile 1

Preferably, in the above steel pipe pile system, two sides of the gear are respectively provided with one crank, so that the gear can be stably erected in the steel pipe pile, and the gear can be conveniently held by a constructor.

The steel pipe pile head 11 is arranged, and the pile shoe 12 is arranged at the lower end of the steel pipe pile 1.

With continued reference to fig. 1 to 6, the method for using the steel pipe pile system includes the following steps:

step 1, preparing the steel pipe pile system;

step 2, sinking the steel pipe pile 1;

step 3, the gear 4 drives the rack 5 to move downwards by rotating the crank 6, so that the steel plate 2 extends outwards along the guide groove 3 and is inserted into the foundation outside the steel pipe pile 1;

step 4, after the construction is finished, reversely rotating the crank 6 to enable the gear 4 to drive the rack 5 to move upwards, and enabling the other end of the steel plate 2 to retract into the steel pipe pile 1 along the guide groove 3;

and 5, recovering the steel pipe pile system.

In summary, the steel pipe pile system and the using method thereof provided by the invention adopt the steel pipe pile 1, the steel plate 2 telescopic mechanism and the driving mechanism, the steel plate 2 telescopic mechanism comprises a steel plate 2 and a guide groove 3, the guide groove 3 is arranged on the steel pipe pile 1, one end of the steel plate 2 is connected with a driving mechanism, the other end of the steel plate 2 extends into the guide groove 3, the other end of the steel plate 2 can retract into the steel pipe pile 1 along the guide groove 3 or extend outwards along the guide groove 3 and is inserted into the foundation outside the steel pipe pile 1 under the action of the driving mechanism, by arranging a steel plate 2 telescoping mechanism and a driving mechanism on the basis of the existing steel pipe pile 1, after the force application and pile sinking of the steel pipe pile 1 are completed, the contact area of the steel pipe pile 1 and a foundation is increased, the pre-loading time is shortened, and the settlement generated when a steel pipe pile system supports a building or a structure is effectively reduced. In addition, for some soft foundations, the steel pipe pile 1 can be pressed into the ground in a reduced depth by adopting the mode, and the plastic deformation of a pile head caused by frequent impact load is reduced.

The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the appended claims.

Claims (10)

1. A steel pipe pile system, comprising: steel-pipe pile, steel sheet telescopic machanism and actuating mechanism, the steel sheet telescopic machanism includes steel sheet and guide slot, the guide slot set up in on the steel-pipe pile, the one end and the actuating mechanism of steel sheet are connected, the other end of steel sheet stretches into inside the guide slot, under actuating mechanism's effect the other end of steel sheet can be along the guide slot retract to the steel-pipe pile in or along the guide slot outwards extend and insert to the ground in the steel-pipe pile outside.

2. The steel pipe pile system according to claim 1, wherein the driving mechanism comprises a gear, a rack, a crank and a connecting rod, the rack is arranged in the steel pipe pile and located on a central shaft of the steel pipe pile, the gear is meshed with the rack, one end of the crank is coaxially connected with the central shaft of the gear, the other end of the crank extends to the outer side of the steel pipe pile and is held by an applicator, the upper ends of the connecting rod are respectively hinged with the lower ends of the rack, one end of the steel plate is hinged with the lower end of the connecting rod, the rack can move up and down by rotating the crank, and the up and down movement of the rack can drive the steel plate to retract into the steel pipe pile along the guide groove or extend outwards along the guide groove and be inserted into a foundation on the outer.

3. The steel pipe pile system according to claim 2, wherein the number of the connecting rods is two, the two connecting rods are symmetrically arranged on both sides of the rack, an included angle between the two connecting rods can be changed along with the vertical movement of the rack, the number of the steel plate telescopic mechanisms is two, and the two steel plate telescopic mechanisms are symmetrically arranged on the steel pipe pile.

4. The steel pipe pile system according to claim 3, further comprising two connecting plates, wherein the upper ends of the connecting plates are respectively hinged to the lower ends of the corresponding connecting rods, a plurality of steel plate telescoping mechanisms are respectively arranged below the two steel plate telescoping mechanisms, one ends of the steel plates in the steel plate telescoping mechanisms are hinged to the corresponding connecting plates, and the other ends of the steel plates extend into the corresponding guide grooves.

5. The steel pipe pile system according to claim 4, wherein the steel plate expansion mechanisms adjacent to each other at upper and lower positions are arranged at equal intervals.

6. The steel pipe pile system according to claim 3, wherein one end of the steel plate is hinged to the connecting rod or the connecting plate by a column hinge, and the rack is hinged to the connecting rod by a ball hinge.

7. The steel pipe pile system according to claim 1, wherein the steel plate has a length 1.5-2 times a radius of the steel pipe pile, and a thickness 1/5-1/8 times a depth of the guide groove.

8. The steel pipe pile system according to claim 7, wherein the crank is provided on each of both sides of the gear.

9. The steel pipe pile system according to claim 1, wherein a steel pipe pile head is provided at an upper end of the steel pipe pile, and a pile shoe is provided at a lower end of the steel pipe pile.

10. The using method of the steel pipe pile system is characterized by comprising the following steps:

step 1 of preparing a steel pipe pile system according to any one of claims 2 to 9;

step 2, sinking the steel pipe pile;

step 3, the gear drives the rack to move downwards by rotating the crank, so that the steel plate extends outwards along the guide groove and is inserted into the foundation on the outer side of the steel pipe pile;

step 4, after construction is completed, reversely rotating the crank to enable the gear to drive the rack to move upwards, and enabling the other end of the steel plate to retract into the steel pipe pile along the guide groove;

and 5, recovering the steel pipe pile system.

Images