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A kind of prefabricated pile construction method

A construction method and prefabricated pile technology, which is applied in sheet pile walls, foundation structure engineering, construction, etc., can solve the problems of low bearing capacity, inability to realize the centrifugal molding of reinforced concrete with strong tensile strength, and low density of concrete prefabricated piles , to achieve the effects of prolonging the service life, facilitating support and positioning, and enhancing the compression resistance

Active Publication Date: 2019-12-17
浙江省现代建筑设计研究院有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] Due to the above-mentioned pile forming method, the strong tension of the reinforcement cage and the centrifugal forming of the concrete cannot be realized between the reinforcement cage and the concrete in the grouting pile, so the formed concrete prefabricated pile has low compactness and low bearing capacity

Method used

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  • A kind of prefabricated pile construction method
  • A kind of prefabricated pile construction method
  • A kind of prefabricated pile construction method

Examples

Experimental program
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Effect test

Embodiment 1

[0055] Embodiment one: a kind of prefabricated pile construction method, with reference to figure 1 and figure 2 , including the following steps:

[0056] Step 1: Determine the pile position, measure and stake out the foundation pit, and determine the excavation depth and aperture of the foundation pit of the prefabricated pile 4 according to the geological conditions revealed by the design drawings of the prefabricated pile 4 and the engineering geological report. The central coordinates define the 4 central points of the prefabricated piles;

[0057] Step 2: Manufacture the prefabricated hole 3, according to the design elevation and aperture of the prefabricated pile 4, use the pile driver 1 to drill down along the center point on the foundation;

[0058]Step 3: Clean up the prefabricated hole 3, crush the rock block with a pneumatic rock drilling machine, and suck it out with a suction dredge after crushing until it reaches the design elevation;

[0059] Step 4: After t...

Embodiment 2

[0067] Embodiment 2: An auxiliary support for prefabricated pile construction, placed above the prefabricated hole 3 during construction, for supporting and positioning the prefabricated pile 4, refer to image 3 , comprising a base 21, the lower surface of the base 21 is provided with a shock absorber 7, and the shock absorber 7 is composed of rubber pads and cotton pads; the base 21 is provided with a sleeve 22, and the top of the base 21 is welded together with the bottom of the sleeve 22 ; The upper ring of the outer wall of the sleeve 22 is provided with a number of braces 8; the base 21 and the sleeve 22 are made of steel.

[0068] refer to Figure 4 , the sleeve 22 is hollow, the center of the base 21 is provided with a through hole communicating with the sleeve 22, the fastener 23 is circumferentially arranged along the inner wall of the sleeve 22, and the inner wall of the sleeve 22 is provided with a plurality of first grooves 24, The bottom of the first groove 24 i...

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Abstract

The invention discloses a preformed pile construction method and an auxiliary support. The preformed pile auxiliary support is arranged above a preformed hole and used for supporting and positioning a preformed pile. The auxiliary support comprises a base and a sleeve arranged on the base. The top end of the base and the bottom of the sleeve are welded integrally. The sleeve is hollow. A through hole communicating with the sleeve is formed in the center of the base. A plurality of fasteners used for fixing and positioning the preformed pile are arranged on the inner side wall of the sleeve and annularly arranged in the circumferential direction of the inner side wall of the sleeve. The construction method and the auxiliary support are adopted for construction, and construction procedures are simple.

Description

technical field [0001] The invention relates to the technical field of civil engineering, more specifically, it relates to a construction method of prefabricated piles. Background technique [0002] Prefabricated piles are one of the pile types commonly used in the field of construction in my country. Its advantages lie in its ability to withstand large loads and fast construction speed, especially to avoid problems such as shrinkage and broken piles of cast-in-place concrete pile foundations. [0003] At present, the main methods of driving prefabricated piles into the foundation are diesel hammering and static pressure method. These two methods have their own advantages and disadvantages. The noise and soot pollution of diesel hammering method are also relatively slow. Moreover, the unavoidable quality and construction risks of these two methods are: when there are geological conditions with relatively hard soil layers such as sand layers and gravel layers, the penetration...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D5/50E02D7/00
CPCE02D5/50E02D7/00
Inventor 汪兴龙李绍宏
Owner 浙江省现代建筑设计研究院有限公司
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