Variable cross-section drilling pouring support pile structure and construction method thereof

A technology for drilling and pouring and supporting piles, which is applied in basic structure engineering, excavation, sheet pile walls, etc., can solve problems such as waste of supporting structures, and achieves expansion of construction means, good economy, and reduction of supporting structure engineering quantities. Effect

Pending Publication Date: 2017-12-26
SHANGHAI URBAN CONSTR DESIGN RES INST GRP CO LTD
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, bored grouting support piles are generally straight piles with the same diameter along the depth range, that is, the depth of the foundation pit determines the diameter of the support pile, and this section is obviously too large for the shallow area of ​​the foundation pit. This results in a large waste of support structures

Method used

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  • Variable cross-section drilling pouring support pile structure and construction method thereof
  • Variable cross-section drilling pouring support pile structure and construction method thereof

Examples

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Embodiment

[0019] Such as figure 1 and figure 2 As shown, the variable cross-section bored grouting support pile structure includes a water-stop curtain 1 and several support piles 2, and several support piles 2 are arranged in parallel to form a support wall, and the support wall and water-stop curtain 1 are arranged in parallel. A retaining pile 2 includes a shallow support pile section 3 and a deep support pile section 4 arranged as one, the top of the shallow support pile section 3 is flush with the foundation pit top 6, and the shallow support pile The section diameter of section 3 is smaller than that of deep support pile section 4, and inter-pile soil reinforcement 7 is arranged between every two shallow support pile sections 3 .

[0020] In this embodiment, several support components are arranged on the support pile 2 . The support assembly includes a first support plate 8 , a second support plate 9 and a third support plate 10 from top to bottom, and the first support plate 8...

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Abstract

The invention provides a variable cross-section drilling pouring support pile structure and a construction method thereof. The structure comprises a waterproof curtain and multiple support piles, the support piles are parallelly arrayed and form a support wall, and the support wall is arranged parallel to the waterproof curtain; each support pile comprises a shallow-layer support pile segment and a deep-layer support pile segment which are integrally arranged, the top of each shallow-layer support pile segment is parallel to and level with the top of a foundation pit, the diameter of the cross section of the shallow-layer support pile segment is smaller than the diameter of the cross section of the deep-layer support pile segment, and a reinforcing body of earth among piles is arranged between every two shallow-layer support pile segments. The variable cross-section drilling pouring support piles can greatly reduce the engineering amount of the support structure, effectively expand the construction means of underground engineering, push the industry technical progress, and have good economic and social benefits.

Description

technical field [0001] The invention relates to the technical field of foundation pit engineering in soft soil areas, in particular to a bored grouting support pile structure and a construction method thereof. Background technique [0002] As an important form of support, bored piles have been widely used in foundation pit engineering in soft soil areas, generally in the form of bored piles + water-stop curtains. [0003] At present, bored grouting support piles are generally straight piles with the same diameter along the depth range, that is, the depth of the foundation pit determines the diameter of the support pile, and this section is obviously too large for the shallow area of ​​the foundation pit. This results in a considerable waste of support structures. Those skilled in the art are devoting themselves to solving the above-mentioned technical defects. Contents of the invention [0004] In view of the above-mentioned defects of the prior art, the technical purpos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/04E02D5/34E02D19/18
CPCE02D5/34E02D17/04E02D19/18
Inventor 张中杰陈加核邵雪莹
Owner SHANGHAI URBAN CONSTR DESIGN RES INST GRP CO LTD
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