Construction method for expanded reinforced cast-in-situ bored pile with hydraulic extruding and expanding combined bag grouting pile body

A technology of bored cast-in-place piles and construction methods, which are applied in sheet pile walls, foundation structure engineering, construction, etc., to achieve the effects of reducing length, easy quality assurance, and cost reduction

Active Publication Date: 2019-07-16
中煤长江基础建设有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the existing problems in the construction of existing enlarged and reinforced bored piles, and propose a construction method for enlarged and reinforced reinforced bored piles with hydraulic extrusion combined with bladder bag grouting

Method used

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  • Construction method for expanded reinforced cast-in-situ bored pile with hydraulic extruding and expanding combined bag grouting pile body
  • Construction method for expanded reinforced cast-in-situ bored pile with hydraulic extruding and expanding combined bag grouting pile body
  • Construction method for expanded reinforced cast-in-situ bored pile with hydraulic extruding and expanding combined bag grouting pile body

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Embodiment Construction

[0047] In order to deepen the understanding of the present invention, reference will be made to Figure 1 to Figure 13 , the embodiments of the present invention are described in detail, the following embodiments are implemented on the premise of the technical solution of the present invention, and detailed implementation is provided, but the protection scope of the present invention is not limited to the following embodiments.

[0048] combined with Figure 5 with 9 As shown, a kind of hydraulic squeeze expansion joint bladder grouting pile body that the present invention relates to expands the reinforced bored cast-in-place pile, comprises cast-in-place pile pile body, and cast-in-situ pile pile body comprises reinforcement cage 3 and concrete 14, and cast-in-situ pile pile length is The diameter of cast-in-situ pile is 22m, the diameter of cast-in-situ pile is 1m, the longitudinal bar of steel cage is hot-rolled ribbed HRB400Φ16, the stirrup is spiral hoop HPB235Φ8@100, an...

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Abstract

The invention relates to a construction method for an expanded reinforced cast-in-situ bored pile with a hydraulic extruding and expanding combined bag grouting pile body. The construction method is characterized by comprising the steps that after drilling is finished, a manufactured reinforcement cage and hydraulic equipment are placed in a drilled hole, a bag grouting extruding and expanding body is wrapped with a bag, then the reinforcement cage is placed in the hole to be subjected to hydraulic extruding and expanding, and finally bag grouting and concrete pouring are carried out. The construction method comprises the steps of drilling and forming the hole, manufacturing the reinforcement cage, installing a steel sleeve, an expansion plate, the bag and the like, installing the hydraulic equipment, lowering the reinforcement cage, hydraulic extruding and expanding construction, grouting the bag, pouring the concrete, and cleaning and maintenance of the hydraulic equipment. The extruding and expanding body can be unfolded in a corresponding soil layer, and reinforcing ribs are arranged in the extruding and expanding body, so that the strength of the extruding and expanding body and the interface strength between the extruding and expanding body and a pile body are improved, the contact area between the extruding and expanding body and the soil body is increased, the uplift bearing capacity is improved, the length and the distance of the cast-in-place pile are reduced, the cost is reduced, and resources are saved.

Description

technical field [0001] The invention relates to the technical field of cast-in-situ pile construction in pile foundation engineering, in particular to a construction method for expanding and reinforcing bored cast-in-place piles with hydraulic extrusion combined with bladder bag grouting pile body. Background technique [0002] Uplift piles are widely used in anti-floating of large basements and anti-uplift of high-rise buildings (structures). With the widespread application of uplift pile construction technology, more and more people pay attention to the mismatch between pile strength and uplift bearing capacity and soil friction. The pile length and design uplift bearing capacity of a single pile are calculated based on the investigation data. For areas where the friction bearing layer is silty clay and soft soil with high water content and low permeability, the design scheme of large-diameter cast-in-situ piles is generally adopted for the uplift-resistant piles. The pil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/38
CPCE02D5/38
Inventor 黄佳波陈春银陈跃虎刘宽荆苏兴
Owner 中煤长江基础建设有限公司
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