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Stiffening pile for reclaiming reinforcing body

A reinforced body and stiffened pile technology, which is applied to sheet pile walls, excavation, construction, etc., can solve the problems of poor reliability of recoverable bolts, inability to meet conventional support requirements, and difficulty in meeting anchoring support requirements.

Active Publication Date: 2013-01-02
SHANGHAI STRONG FOUND ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Obviously this cannot meet the conventional support requirements
According to our practical test, the reliability of the retractable bolt with enlarged head is poor, the anchoring force is low, and it is difficult to meet the requirements of anchoring and support

Method used

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  • Stiffening pile for reclaiming reinforcing body
  • Stiffening pile for reclaiming reinforcing body
  • Stiffening pile for reclaiming reinforcing body

Examples

Experimental program
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Effect test

Embodiment Construction

[0030] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0031] see figure 1 , the stiffened pile of recyclable reinforced body includes a pile body 6 formed by jet spray mixing pile body or cement grouting, its pile head part contains a columnar cage, and the reinforced body 5 is U-shaped and hangs on the The top end plate 1 of this columnar cage is folded back and passes through the other bottom end plate 2. The reinforcement body 5 is a whole unbonded steel strand.

[0032] figure 2 with image 3 The cylindrical cage shown is cast in one shot, with or without holes distributed throughout.

[0033] The pile body 6 of cement slurry is formed by drilling grouting, and the pile body 6 stirred by rotary jetting is constructed by utilizing the rotary jetting stirring drilling tool.

[0034] The cyli...

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Abstract

The invention discloses a stiffening pile for reclaiming a reinforcing body. The stiffening pile comprises a cement soil pile body, the pile head part of the cement soil pile body comprises a columnar reinforcing cage which is made of high-strength plastic or high-strength material, the reinforcing body is wound in a U shape on a top end plate of the columnar reinforcing cage and passes through the other end plate, and the reinforcing body is an integral un-bonded steel strand. The stiffening pile provides high pulling resistance, and can also be used for conveniently reclaiming the reinforcing body. The bonding force between the reinforcing body and an anchorage body is controlled by adopting the un-bonded reinforcing body. Moreover, the reinforcing cage made of nonmetallic material improves the strength and the integrity of the stiffening pile and can effectively improve the pulling resistance of the stiffening pile. After a foundation pit support project is finished, the anchorage body can be separated with the reinforcing body, so that the reinforcing body is conveniently reclaimed from the soil, the requirements of steel reutilization, low carbon and energy conservation are realized, the reinforcing body is prevented from being left in the stratum to form an obstacle, and the purposes of protecting the environment and reducing the engineering cost are fulfilled.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to a support pile used in deep foundation pit support engineering. Background technique [0002] Currently commonly used deep foundation pit support engineering, cement-soil stiffened piles have high pull-out resistance, and have been applied in some weak soil layers, but the steel strands used for the reinforcement body are completed in the foundation pit enclosure structure After functioning, it often remains underground to form obstacles, thus limiting the application of this type of support. For this reason, after the supporting structure is completed, the reinforced body can be recovered from the soil, which is an urgent problem to be solved in the engineering field. [0003] Judging from the current technical standards of bolt (cable) support and the technical level of bolt (cable) recovery, these recoverable bolt support technologies are applicable under certain co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D5/54E02D17/02
Inventor 刘全林宋伟民
Owner SHANGHAI STRONG FOUND ENG
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