Construction method of hard soil field PCC pile

A construction method and hard soil technology, applied in sheet pile walls, foundation structure engineering, construction, etc., can solve problems such as difficulty in sinking molds, rise of pile core soil, etc., achieve easy pile sinking, reduce soil extrusion pressure, and low cost Effect

Active Publication Date: 2015-09-23
江苏斯维尔工程技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the technical problems of mold sinking difficulty and pile core soil rising due to soil compaction in the construction process of PCC piles on hard soil sites, and overcome the above-mentioned defects caused by mold sinking difficulties and pile core soil rising , providing a construction method for PCC piles in hard soil layers

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  • Construction method of hard soil field PCC pile
  • Construction method of hard soil field PCC pile
  • Construction method of hard soil field PCC pile

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Embodiment Construction

[0027] Such as figure 1 As shown in (a), before the pile driver is in place, soil is taken from the center of the pile to form a reserved cavity 13 . Reserve cavity 13 sectional areas (as figure 2 (a) The area of ​​the small circle) and the area between the inner and outer tubes of the pile (such as figure 2 (a) The area of ​​the circle formed by the two dotted lines) is equal, and the depth is the same as the maximum depth of sinking of the inner pipe 1 of the pile form, at this time figure 1 The section diagrams along the lines C-C and D-D are as follows figure 2 As shown in (a), the dotted line indicates the position of the pile formwork. At this time, the pile foundation is not in place yet, and the small circle with the solid line in the center indicates the outer contour of the reserved cavity 13 . Such as figure 1 As shown in (b), before the pile foundation is in place, the pile formwork is assembled and the spud cans are closed. The switch control that clamp 11...

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Abstract

The invention discloses a construction method of a hard soil field PCC pile. A valve pile shoe is arranged in a pile mold inner pipe; the length of a pile mold outer pipe is increased; and after a pile machine is in place, soil having the same section with a pile mold is taken in the center of a pile position. The outer pipe is longer than the closed valve pile shoe; a pile tip formed by the valve pile shoe is inwards inclined; in the vibration mold sinking process, the pile mold mainly generates inward horizontal component force on pile core soil, so that the pile core soil is inwards deformed to fill a reserved cavity, and the disturbance on pile side soil is little; meanwhile, the extrusion stress of the pile core soil on the inner pipe is reduced, and the mold sinking difficulty is reduced in the pile mold driving process; and in the pile mold hoisting process, the side friction resistance of the pile core soil on the inner pipe is reduced, that is, the ascending force of the pile core soil is reduced. The construction method is simple in structure, easy to realize, convenient for operation and low in cost, can effectively reduce the mold dipping difficulty on the hard soil layer and the ascending force of the pile core soil, and is an efficient and practical method in the PCC pile construction.

Description

technical field [0001] The invention relates to a pile foundation construction method, in particular to a PCC pile construction method on a hard soil site. Background technique [0002] Pile foundation refers to a deep foundation composed of piles and pile caps (referred to as caps) connected to the top of the piles or a single pile foundation connected by columns and pile foundations. The classification of eucalyptus construction methods mainly includes prefabricated piles and cast-in-place piles. Prefabricated piles are various materials and various forms of piles (such as wooden piles, concrete square piles, prestressed concrete pipe piles, steel piles, etc.) made in factories or construction sites. into or vibrate into the soil. Cast-in-situ piles are also called cast-in-place piles, which refer to forming holes directly on the foundation of the designed pile position, placing steel cages or no steel bars in the holes, and then pouring concrete into the holes to form p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/38E02D5/72
Inventor 刘汉龙丁选明戴元志徐来
Owner 江苏斯维尔工程技术有限公司
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