Waste tire thin-wall hollow pile for treating soft foundation and construction method thereof

A technology based on waste tires and soft foundations, which is applied in foundation structure engineering, sheet pile walls, soil protection, etc., can solve the problems of long construction period of concrete hollow piles, low engineering applicability, and not very outstanding effects, etc., and achieves good results Long-term stability, simple and convenient construction process, and favorable effects for popularization and application

Pending Publication Date: 2020-04-03
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional methods for dealing with soft ground, such as surcharge preloading (longest cycle), vacuum surcharge preloading (long cycle), electroosmosis (too high cost), etc., can be better to a certain extent Reinforce the soft foundation, but its cost is high, the construction period is long, and the effect is not very outstanding, which leads to the low applicability of the project
[0003] When the traditional concrete hollow pile is sunk, the soil around the pile is compacted or squeezed out, causing horizontal displacement or vertical uplift of the soil, which may cause floating, pile displacement and pile body warping of adjacent piles that have been pressed in Break or affect adjacent buildings, pipelines and roads, etc. The most important thing is that the concrete hollow pile has a long construction period, high cost, and requires a large amount of concrete, as well as a large amount of sand and gravel.

Method used

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  • Waste tire thin-wall hollow pile for treating soft foundation and construction method thereof
  • Waste tire thin-wall hollow pile for treating soft foundation and construction method thereof
  • Waste tire thin-wall hollow pile for treating soft foundation and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Such as figure 1 , press the tire cover mold 2 into the soft foundation 3 through a static pile driver, and insert the waste tire crowns 102 into the tire cover mold 2 one by one through the piston 4 with a scale; then, around the waste tire crown 102 Fill the cement slurry 103, and then pull out the tire cover mold 2 through the lifting hole 205; finally, take out the pile core soil below the ground surface, and refill the concrete as the hollow pile top cover 6, thereby forming a hollow pile with a length of 3-10m and a thickness of 3-5cm thin-walled hollow pile 1. The hollow pile 1 has a length of 3-10m and an inner diameter of 50cm. Soft foundation 3 is a loose or medium-dense sandy foundation with a relative density of less than 55%, or a soft clay foundation between plastic and fluid plastic. The poured cement slurry 103 has a strength of M10 or above, forming a thin-walled hollow pile 1 with the waste tire crown 102 as the core and the cement slurry 103 as the ...

Embodiment 2

[0039] The difference between this embodiment and embodiment 1 is that the inner diameter of hollow pile 1 is 70cm, and the model of tire cover mold 2 is 63cm*70cm*3.3cm*0.2cm (inner shell diameter*outer shell diameter*cavity thickness*inner shell thickness) , the rest of the structure and construction methods are the same.

Embodiment 3

[0041] The difference between this embodiment and Embodiment 1 is that the inner diameter of hollow pile 1 is 110cm, and the model of tire cover mold 2 is 103cm*110cm*3.2cm*0.3cm (inner shell diameter*outer shell diameter*cavity thickness*inner shell thickness) , the rest of the structure and construction methods are the same.

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Abstract

The invention discloses a waste tire thin-wall hollow pile for treating soft foundation and a construction method thereof. The waste tire thin-wall hollow pile for treating the soft foundation comprises a hollow pile and a soft foundation; the hollow pile is pressed into the soft foundation through a tire sleeve mold and a piston at intervals; the hollow pile comprises a hollow pile top cover, a waste tire crown and a cement slurry, the waste tire crown is stacked one by one and is fixedly connected with the cement slurry, and a hollow pile top cover is arranged at the top of the hollow pile.The construction method comprises the following steps of prefabricating a geological survey, a crown and a sleeve mold, arranging the tire sleeve mold, pulling out the tire sleeve mold, filling the pile top hollow backfill concrete, and repeating the above steps at intervals of 2 to 4.5m. The waste tires are used as main materials of the hollow pile, compared with a traditional method for treatinga soft soil foundation through steel bars, concrete and other materials, the cost of the engineering material is reduced, and the method has economic and environmental protection benefits.

Description

technical field [0001] The invention relates to the field of soft ground reinforcement, in particular to a thin-walled hollow pile for waste tires for treating soft ground and a construction method thereof. Background technique [0002] Concrete hollow pile, as a commonly used structural form for strengthening building foundation, has strong vitality, and its construction technology has been continuously improved and developed. Traditional methods for dealing with soft ground, such as surcharge preloading (longest cycle), vacuum surcharge preloading (long cycle), electroosmosis (too high cost), etc., can be better to a certain extent Reinforcing the soft ground, but its cost is high, the construction period is long, and the effect is not very prominent, which leads to the low applicability of the project. [0003] When the traditional concrete hollow pile is sunk, the soil around the pile is compacted or squeezed out, causing horizontal displacement or vertical uplift of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/08E02D5/24E02D5/52
CPCE02D3/08E02D5/24E02D5/52
Inventor 王丽艳陶云翔唐琰周爱兆孙可徐浩青侯贺营
Owner JIANGSU UNIV OF SCI & TECH
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