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Open caisson deviation rectification construction method

A construction method and caisson technology, applied in the municipal field, can solve problems such as caisson jacking and rectification

Inactive Publication Date: 2010-09-29
广东固易特种工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem solved by the invention is to provide a caisson deviation correction construction method to solve the problem of caisson jacking deviation correction

Method used

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  • Open caisson deviation rectification construction method

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Embodiment Construction

[0013] The present embodiment will be described in detail below in conjunction with the accompanying drawings.

[0014] figure 1 It is a schematic diagram of caisson correction. In this embodiment, the caisson 2 needs to be lifted by 12 cm, and the foundation soil 3 below the caisson 2 is muddy soil with a water content of 60%. The quicklime pile 1 is arranged at the position where the caisson 2 needs to be jacked up, and the quicklime pile 1 is obliquely driven into the foundation soil 4, and the inclination rate of the quicklime pile 1 is 80°. Real-time monitoring should be carried out during the jacking process of caisson 2, and the construction should be temporarily stopped when the jacking amount of caisson 3 reaches 8cm. After 3 days, the quicklime pile 1 will be constructed after the soil is basically stable, so that caisson 2 will continue to be jacked up by 4cm.

[0015] Quicklime pile 1 is 8m long, the pile spacing is 0.9cm, and the pile diameter is 400cm. Quickli...

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Abstract

The invention discloses an open caisson deviation rectification construction method, which is characterized in that quicklime piles are arranged at the positions where the open caisson needs to be jacked, and are obliquely infiltrated into the foundation soil, the rake rate of the quicklime pile is 75-90 degrees. The real-time monitoring is carried out during the process of the jacking of the open caisson, the construction is stopped when the jacking quantity of the open caisson reaches 8-10cm, and the construction of the quicklime piles can be carried out after three-dimensional back-stay soil body is stable. The construction of slip-casting is carried out after the construction of the quicklime piles is finished. The invention is characterized in that the material can be obtained in local, the price is low, the occupied field is small, no hydroelectric equipment is needed and the construction is quick, and the like.

Description

technical field [0001] The invention relates to a caisson deviation correcting construction method, which is applicable to the municipal field. Background technique [0002] During caisson construction, due to various factors, tilting occurs, and the traditional method adopts digging and sinking to correct the deviation. However, for some caissons with functional requirements, if the elevation of the caissons decreases, their function will be affected, and the deviation can only be corrected by jacking up and correcting to meet the use requirements. Pour quicklime blocks into the foundation, because the quicklime blocks absorb the moisture in the soil around the pile and undergo a digestion reaction to produce slaked lime. At the same time, the volume of the pile body expands, causing a strong compressive force on the soil between the piles. In addition, the lime will produce ion exchange in the foundation soil. The gelling effect greatly reduces the content of clay particl...

Claims

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Application Information

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IPC IPC(8): E02D35/00E02D23/00
Inventor 朱奎
Owner 广东固易特种工程有限公司
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