Construction method of prestressed tubular pile

A technology of prestressed pipe piles and construction methods, which can be applied in the direction of sheet pile walls, foundation structure engineering, construction, etc., and can solve the problem of low bearing capacity

Inactive Publication Date: 2007-02-14
闫雪晖
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since this type of pile is a friction pile, the bearing capacity of this type of pile is relatively low due to the fa

Method used

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  • Construction method of prestressed tubular pile
  • Construction method of prestressed tubular pile
  • Construction method of prestressed tubular pile

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Embodiment Construction

[0024] The construction method of the prestressed pipe pile as an embodiment of the present invention includes the following steps. First, as shown in Figure 1a, at the predetermined pile position, bury the prefabricated pile tip with the grouting valve and the guide ring Then, as shown in Figure 1b, the first prestressed pipe pile is connected to the prefabricated pile tip, and the prestressed pipe pile is pressed down to a certain depth in the soil by static pressure (or hammering). ; then, if Figure 1c As shown, the second prestressed pipe pile is overlapped on the upper end of the first prestressed pipe pile, and the second prestressed pipe pile is pressed down (or hammered). Repeat the above operations of lapping the pile body and pressing the pile until the pile end reaches the design elevation; after that, if Figure 1d As shown, the pressure grout pipe in the middle hole of the prestressed pipe pile is connected with the pressure grout valve; then, as Figure 1e As ...

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Abstract

A method for constructing prestressed tubular pile includes burying prefabricated pile pointer with mud jacking valve and guide coil at certain depth of underground and connecting prestressed tubular piles to press said pile pointer up to desired depth, connecting mud jacking pipe with said valve and jacketing clasp at top of pile body, using triplet to connect mud jack with said pipe to carry out mud jacking, disassembling triplet and lifting out said pipe, placing precast reinforced concrete cap at top of pile body and connecting it.

Description

technical field [0001] The invention relates to the field of civil engineering, in particular to the construction technology of pile foundation and composite foundation. Background technique [0002] At present, the prefabricated pipe pile technology widely used in the market is easy to control the quality, the construction speed is fast, and the cost is relatively low, so it is welcomed by the society. However, prefabricated pipe piles are generally suitable for soft soil foundations: Tianjin, Shanghai, Ningbo, etc. In coastal cities, the upper soil layer is relatively soft, and the bottom of the pile has a better bearing layer, such as sand layer, clay layer and pebble layer. Since this pile type is a friction pile, the bearing capacity of this pile type is relatively low because the bearing capacity is realized only by the area of ​​the pile body and the friction coefficient of the soil. Therefore, the bearing capacity of prefabricated pipe piles should be improved simpl...

Claims

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Application Information

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IPC IPC(8): E02D5/30E02D5/52E02D5/62E02D7/00
Inventor 闫雪晖
Owner 闫雪晖
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