CN215629912U - Pile foundation engineering pile - Google Patents

Abstract

The utility model relates to a pile foundation engineering pile, and belongs to the technical field of pile type structures in pile foundation engineering. The utility model aims to provide a pile foundation engineering pile with better economic benefit and less disturbance to ecological environment, which comprises an expansion bolt type pile body, wherein one end of the pile body is a threaded end, the other end of the pile body is a tapered end, the threaded end of the pile body is provided with a gasket, a spring pad and a nut, an expansion sleeve is sleeved on the part of the pile body between the threaded end and the tapered end, the expansion sleeve comprises a first sleeve and a second sleeve, the first sleeve is positioned on one side close to the threaded end, the second sleeve is positioned on one side close to the tapered end, the side wall of the first sleeve is provided with a deformation groove at one end close to the second sleeve, the number of the second sleeves is one or more, the side wall of the second sleeve is provided with a deformation groove at one end close to the tapered end of the pile body, and the outer side wall of the second sleeve, which is positioned on one end close to the first sleeve, is provided with a tapered structure.

Description

Pile foundation engineering pile

Technical Field

The utility model relates to a pile foundation engineering pile, and belongs to the technical field of pile type structures in pile foundation engineering.

Background

With the new development of new energy in China and abroad, the concept of insisting on constructing clean energy and creating green environment is already proposed to an unprecedented height. Photovoltaic power generation engineering such as the vigorous development of bamboo shoots in spring after rain, how to build new energy and simultaneously strengthen ecological environmental awareness and reduce environmental disturbance based on the idea that 'green water mountain is the Jinshan Yinshan'.

Chinese solar energy resources are very abundant, the theoretical storage capacity reaches 17000 hundred million tons of standard coal every year, the annual average daily radiant quantity in most areas is more than 4 kilowatt-hours per square meter, and the solar energy resources in Tibet and other areas are more prominent. In most areas of Tibet, the altitude is more than four kilometers, the natural conditions are influenced by high altitude and cold, the ecological environment is very fragile, and once the ecological environment is damaged, the ecological environment is difficult to recover, so the protection work is very important. In the photovoltaic construction process, pile foundation engineering is one of necessary basic works, the existing pile types mainly comprise concrete microporous cast-in-place piles, spiral piles and static pressure piles, damage to vegetation on the earth surface is large, and particularly, damage to the earth surface and the underground ecological environment is obvious when the stratum of the concrete microporous cast-in-place piles is used.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is as follows: the pile foundation engineering pile has better economic benefit and smaller disturbance to the ecological environment.

In order to solve the technical problems, the utility model adopts the technical scheme that: pile foundation engineering pile, including the pile body of inflation bolt formula, the one end of pile body is the screw thread end, the other end is the toper end, the one end that the toper end is close to the pile body middle part is its tip end, the one end of keeping away from the pile body middle part is its tip end, the screw thread end of pile body sets packing ring and nut, the position cover of pile body between its screw thread end and toper end is equipped with the inflation sleeve, the inflation sleeve includes the first sleeve that is located near screw thread end one side and the second sleeve that is close to toper end one side, the lateral wall of first sleeve is provided with the deformation groove in the one end that is close to the second sleeve, the quantity of second sleeve is one or many, the one end that the lateral wall of second sleeve is close to pile body toper end is provided with the deformation groove, the lateral wall that the second sleeve is close to first sleeve one end sets up to the toper structure, the one end that the toper structure is close to first sleeve is its tip end for its tip end, The end far away from the first sleeve is the big end.

Further, the method comprises the following steps: and a spring pad is sleeved at the position, between the washer and the nut, of the threaded end head of the pile body.

Further, the method comprises the following steps: the lateral wall of first sleeve is provided with the barb, and the one end of barb is articulated with the lateral wall of first sleeve, and the screw thread end one side slope of one end orientation pile body is overhanging in addition, sets the spring in barb and the first telescopic connection structure so that the barb is in the tilt state for first sleeve.

Further, the method comprises the following steps: the barb is arranged many along the peripheral direction interval of first sleeve, and the barb that is located the same axial position of first sleeve is a set of, and the barb sets up the multiunit along the axis direction interval of first sleeve.

The utility model has the beneficial effects that: when the method is implemented, the pile body in the expansion bolt mode is inserted into the preformed hole, the gasket and the spring pad are sequentially sleeved into the threaded end head of the pile body, finally the nut is screwed in, and the bolt twisting device is utilized until the gasket is flush with the upper support connecting piece. Then, continuously utilizing bolt twisting equipment to hang and screw nuts, moving the pile body outwards, firstly driving a conical structure at the end part of the second sleeve to apply expansion force to the first sleeve, enabling the deformation groove part at the end part of the first sleeve to deform under stress, expanding the end part of the side wall of the first sleeve, fully expanding the whole preformed hole, and embedding the preformed hole with bedrock; in a similar way, the end parts of the side walls of the second sleeves are expanded one by one and are respectively embedded with bedrock, so that a plurality of fixing structures are formed at axial intervals of the preformed holes. In addition, in order to improve the reliability of the pile body fixing structure, the outer side wall of the first sleeve can be additionally provided with an agnail, and after the pile body is inserted into the preformed hole, the agnail can be embedded into a bedrock crack or a compact soil layer under the action of the reset elasticity of the spring and is embedded and fixed with the bedrock crack or the compact soil layer. The expansion bolt type pile design provided by the utility model has the advantages that under the condition that the stress meets the design requirement, the pile length control and ecological protection are both considered, the diameter and the length of the pile body can be relatively reduced, the fastening purpose is achieved by utilizing the friction bond force of the expansion sleeve embedded into the bedrock, the design requirement is met, the installation and use cost caused by the increase of the pile length and the pile diameter due to the fact that the strength requirement is met can be effectively reduced, the economic benefit is better, the investment is saved, the construction is convenient, large-scale mechanical equipment is not needed to enter the field, and the damage to turf vegetation is reduced. Under the same conditions, smaller drilling diameter and penetration depth can further reduce the disturbance and damage to the ecological environment. In the later stage, if the project needs to be dismantled, the expansion bolt type pile can be taken out and recycled, and meanwhile ecological protection and restoration of a construction site are facilitated.

Drawings

Fig. 1 is a schematic structural view of the present invention.

The labels in the figure are: 1-pile body, 2-washer, 3-nut, 4-first sleeve, 5-second sleeve, 6-deformation groove, 7-spring pad and 8-barb.

Detailed Description

The utility model will be further explained with reference to the drawings.

As shown in fig. 1, the pile foundation engineering pile of the present invention includes an expansion bolt type pile body 1, one end of the pile body 1 is a threaded end, the other end is a tapered end, one end of the tapered end close to the middle of the pile body 1 is a small end, one end far away from the middle of the pile body 1 is a large end, the threaded end of the pile body 1 is provided with a washer 2 and a nut 3, the pile body 1 is sleeved with an expansion sleeve at a position between the threaded end and the tapered end, the expansion sleeve includes a first sleeve 4 located at one side close to the threaded end and a second sleeve 5 located at one side close to the tapered end, one end of the side wall of the first sleeve 4 close to the second sleeve 5 is provided with a deformation groove 6, the number of the second sleeve 5 is one or more, one end of the side wall of the second sleeve 5 close to the tapered end of the pile body 1 is provided with a deformation groove 6, the outer side wall of the second sleeve 5 close to one end of the first sleeve 4 is provided with a tapered structure, the end of the conical structure close to the first sleeve 4 is its small end, and the end far away from the first sleeve 4 is its big end. In order to prevent the nut 3 from loosening in the later use process, the threaded end of the pile body 1 is sleeved with a spring pad 7 at the position between the washer 2 and the nut 3.

In the implementation of the utility model, the pile body 1 and the sleeve are generally made of metal materials, for example, steel materials, and are pre-processed in a factory for standby. Nut 3 then chooses ordinary hexagon nut for use can, and packing ring 2 is ordinary flat pad, and bar groove that deformation groove 6 adopted along circumference interval arrangement according to conventional design. The method can be installed and implemented through the following steps that a drilling machine performs hole pre-forming operation at the position of a pile to be used, an expansion bolt type pile body 1 and an expansion sleeve are pressed in after hole positioning and clearing, related parts of a thread end of the pile body 1 are respectively a gasket 2, a spring pad 7 and a nut 3 from bottom to top, the gasket 2, the spring pad and the nut 3 are sequentially installed according to the sequence, the nut 3 is screwed in and screwed down until the gasket 2 reaches the level position of an upper support connecting piece, if no special requirement exists, the nut 3 is screwed down for 3 to 5 circles by using screwing equipment, the pile body 1 moves outwards, the first sleeve 4 is kept still, the pile body 1 firstly drives a conical structure at the end part of the second sleeve 5 to apply expansion force to the first sleeve 4, the deformation groove 6 at the end part of the first sleeve 4 is deformed, the end part of the side wall of the first sleeve 4 expands, and the whole pre-forming hole is expanded and fixed with a bedrock; similarly, the end parts of the side walls of the second sleeves 5 are gradually expanded and respectively embedded with bedrock, so that a plurality of fixing structures are formed at the axial intervals of the preformed holes.

For reaching better consolidation effect, the lateral wall of first sleeve 4 is provided with barb 8, and the one end of barb 8 is articulated with the lateral wall of first sleeve 4, and the screw end one side slope of one end orientation pile body 1 is overhanging in addition, sets the spring in the connection structure of barb 8 and first sleeve 4 so that barb 8 is in the tilt state for first sleeve 4. The barbs 8 can be designed into one circle or a plurality of circles, and are preferably arranged in a mode that: barb 8 arranges many along the peripheral direction interval of first sleeve 4, and the barb 8 that is located the same axial position of first sleeve 4 is a set of, and barb 8 sets up the multiunit along the axis direction interval of first sleeve 4. The spring provided in the connection structure of the barb 8 and the first sleeve 4 may be a torsion spring designed at the position of the hinge shaft, or a cylindrical spring designed between the two at an included angle. According to the inclination direction of the barb 8, when the pile body 1 is inserted into the preformed hole, the barb 8 compresses the spring inwards due to the extrusion force, so that the pile body 1 can be smoothly inserted. After the pile body 1 is inserted in place, in the process of screwing the nut 3 to enable the pile body 1 to move outwards, the barb 8 on the outer side of the first sleeve 4 can be embedded into a bedrock crack or a compact soil layer and is embedded and fixed with the bedrock crack or the compact soil layer.

The pile body 1 and the expansion sleeve in the expansion bolt type engineering pile structure are subjected to anti-corrosion treatment.

When the utility model is used, the selection of geological conditions should be strictly paid attention, and the utility model mainly utilizes the principle that the expansion bolt utilizes the wedge-shaped slope to promote expansion to generate friction force, so that the rock-soil layer driven by the pile body is required to be compact enough, such as a foundation layer, a compact soil layer and the like, and the driving depth is generally higher than the underground water level, thereby avoiding the situations of loosening the pile body or corroding the pile body and the like caused by the influence of water flow or other loads.

Measuring the positions of four corners of a fixed point array plane by using a total station according to the construction plan, and marking the positions of the fixed points by using iron nails; and (4) adopting a manual frame horizontal strip line to discharge each pile point position in the array. Before the drilling machine is in place, the geological conditions and the bearing capacity of the site are rechecked, and if the bearing capacity does not meet the requirements, treatment measures need to be taken. Before the pile driver is in place, whether the measuring pile site is damaged due to mechanical walking or not should be checked. After the pile driver is in place, the horizontal and vertical positions of the adjusting machine base and the machine frame are carefully checked and adjusted to ensure the stability of the machine and to check that the transmission braking device runs normally enough.

Before construction, tools such as a level gauge, a leveling ruler and a calibrator are adopted for calibration, inspection and leveling, and the bottom of the upright post of the upper support is welded or bolted to the pile body 1 of the expansion bolt type engineering pile. During welding, the welding requirement needs to be paid attention to, and the welding problem caused by overlarge wind speed or rain and snow weather is prevented. And (5) after welding, inspecting the welding part, and carrying out the next step of installation on the qualified part.

And establishing a measurement control network according to control water level points provided by a construction unit, carrying out pile testing on the engineering pile strictly according to a pile testing scheme, determining pile foundation design construction parameters through pile testing results, and selecting a foundation bearing layer.

When the stand column is welded, the stand column needs to be fixed by spot welding, and in order to prevent welding deformation, the stand column joint is symmetrically welded by two persons. Welding needs to meet the requirements. And after finishing, the welding part needs to be subjected to anticorrosion treatment.

In the implementation process, a static load test method can be adopted to detect the vertical compression bearing capacity of the engineering pile, so that the problems that the driving depth of the reference pile is insufficient and the test process generates displacement are avoided.

Claims (4)

1. Pile foundation engineering stake, its characterized in that: the pile comprises an expansion bolt type pile body (1), wherein one end of the pile body (1) is a threaded end, the other end of the pile body is a conical end, one end, close to the middle part of the pile body (1), of the conical end is a small end, one end, far away from the middle part of the pile body (1), of the conical end is a large end, the threaded end of the pile body (1) is provided with a gasket (2) and a nut (3), an expansion sleeve is sleeved on the position, between the threaded end and the conical end, of the pile body (1) and comprises a first sleeve (4) and a second sleeve (5), the first sleeve (4) is close to one side of the threaded end, the second sleeve (5) is provided with a deformation groove (6), the number of the second sleeve (5) is one or more, the side wall of the second sleeve (5) is provided with a deformation groove (6) at one end, close to the conical end of the pile body (1), the outer side wall of one end, close to the first sleeve (4), of the second sleeve (5) is set to be of a conical structure, one end, close to the first sleeve (4), of the conical structure is a small end of the conical structure, and one end, far away from the first sleeve (4), of the conical structure is a large end of the conical structure.

2. The pile foundation engineering pile of claim 1, wherein: the spring pad (7) is sleeved at the position, between the gasket (2) and the nut (3), of the threaded end of the pile body (1).

3. The pile foundation engineering pile of claim 1 or 2, wherein: the outer side wall of the first sleeve (4) is provided with a barb (8), one end of the barb (8) is hinged to the outer side wall of the first sleeve (4), the other end of the barb is inclined towards one side of the threaded end of the pile body (1) and extends outwards, and a spring is arranged in a connecting structure of the barb (8) and the first sleeve (4) in a matched mode so that the barb (8) is in an inclined state relative to the first sleeve (4).

4. The pile foundation engineering pile of claim 3, wherein: barb (8) are arranged many along the periphery direction interval of first sleeve (4), and barb (8) that are located the same axial position of first sleeve (4) are a set of, and barb (8) set up the multiunit along the axis direction interval of first sleeve (4).

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