Sand lining tooth-shaped pile with excellent performance and construction method thereof

A technology of sand lining and tooth shape, which is applied in the direction of sheet pile walls, foundation structure engineering, construction, etc., can solve the problems of serious soil squeezing effect and inability to guarantee construction quality, so as to save excavation earth and stone volume, significant bearing capacity, and start construction The effect of shortening the time

Pending Publication Date: 2019-03-08
郭兆泉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] (e) Due to the frictional resistance of the sand lining, the drainage piles on the serrated surface are often pulled up, which cannot guarantee the construction quality
[0011] (f) The soil extrusion effect of the immersed tube forming hole and the bottom expansion process of the heavy hammer is serious

Method used

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  • Sand lining tooth-shaped pile with excellent performance and construction method thereof
  • Sand lining tooth-shaped pile with excellent performance and construction method thereof
  • Sand lining tooth-shaped pile with excellent performance and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Such as figure 1 As shown, the sand-lined tooth-shaped pile with excellent performance in this embodiment includes a pile body 1, a through hole is provided in the middle of the pile body 1, and several trapezoidal teeth are arranged at intervals on the pile body 1, and the trapezoidal teeth include trapezoidal wide teeth 2 and trapezoidal teeth. The narrow teeth 3 are alternately distributed in two trapezoidal wide teeth 2 and one trapezoidal narrow tooth 3 .

[0041] The tooth top width L1 of the trapezoidal wide tooth is 100~250mm, and the tooth top width of the narrow tooth is L2=50~80mm. The center distance between each trapezoidal tooth is 300-800mm. The two hypotenuses of the trapezoidal teeth form an angle of 45 degrees with the pile body, and the tooth height L3 of the trapezoidal teeth is 50~60mm. The sand-lined toothed pile also includes vertical ribs 4 arranged on the upper and lower surfaces of the pile body. The height of the vertical ribs is the same as...

Embodiment 2

[0046] Such as figure 2 As shown, the sand-lined tooth-shaped pile of this embodiment includes a pile body 1, and several trapezoidal teeth are arranged at intervals on the pile body 1. The trapezoidal teeth are trapezoidal narrow teeth 3, and the center distance between each trapezoidal tooth is 300~800mm .

[0047] The sand-lined toothed pile also includes vertical ribs 4 arranged on the upper and lower surfaces of the pile body. The height of the vertical ribs is the same as the tooth height of the trapezoidal teeth. The tooth height L3 of the trapezoidal teeth is 50~60mm. Figure 5 shown. The addendum width L2 of the narrow tooth is 50~80mm. The two hypotenuses of the trapezoidal teeth form an included angle of 45 degrees with the pile body. The distance between the two ends of the pile body 1 and the trapezoidal teeth at both ends is 500mm. The total length of the sand-lined toothed pile is L=12~13m.

[0048] The obtuse angle formed by the trapezoidal hypotenuse and...

Embodiment 3

[0052] Such as image 3 As shown, in the sand-lined tooth-shaped pile of this embodiment, vertical ribs 4 are not arranged on the upper and lower surfaces of the pile body, and the rest are the same as in Embodiment 2. The C-C sectional view is as follows Figure 5 shown.

[0053] In the construction method of the above-mentioned sand-lined tooth-shaped piles involved in this embodiment, a long auger drill with the same diameter and the full length of the pilot hole is first used, and then the pile is pressed by a vibrating machine, and the depth of the pile is 12-15m.

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Abstract

The invention relates to a sand lining tooth-shaped pile with excellent performance and a construction method thereof. The sand lining tooth-shaped pile comprises a pile body, a plurality of trapezoidal teeth are arranged on the pile body at intervals; and the trapezoidal teeth are trapezoidal narrow teeth, or are the trapezoidal wide teeth and the trapezoidal narrow teeth, wherein the trapezoidalwide teeth and the trapezoidal narrow teeth are alternately-distributed. According to the sand lining tooth-shaped pile and the construction method thereof, the single-pile ultimate bearing capacityis improved remarkably, is improved by 60% or above compared with a conventional tubular pile, is improved by 70%-90% compared with a cast-in-place concrete cast-in-place pile, and is improved by 35%compared with a tooth grain surface drainage pile with a sand lining; and the quality is reliable and controllable. According to the sand lining tooth-shaped pile and the construction method thereof,the pile delivering depth can reach 12-15 m, the start working time of engineering can be strived, and the construction period can be greatly shortened; and a large amount of earth and rock excavationaround a foundation pit is omitted, so that the construction speed is high, the cost is low, and the earthquake resistance is facilitated.

Description

technical field [0001] The invention relates to a toothed pile, especially a sand-lined toothed pile with excellent performance, and also relates to a construction method thereof. Background technique [0002] At present, various piles are constructed in soft foundation soil, and all there are following deficiencies: [0003] a. Cast-in-place concrete piles (including: long spiral, rotary drilling, vibrating sinking tube, etc.) are constructed in soft foundation soil, and the concrete of the pile body is prone to quality problems such as depressions, leaking reinforcement, and broken piles. [0004] b. Prestressed concrete piles are constructed in soft foundation soils. When they encounter geological conditions such as round gravel layers, sand layers, silt layers, and hard cohesive soil layers, they cannot be pressed to the design depth and cannot meet the design bearing capacity. Require. [0005] Based on the above deficiencies, although there are sand-lined serrated su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D27/12E02D5/24E02D5/30
CPCE02D5/24E02D5/30E02D27/12
Inventor 郭兆泉胡靚
Owner 郭兆泉
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