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Piling method B

A technology for forming piles and pile heads, which is applied in the direction of sheet pile walls, buildings, and foundation structure engineering, and can solve the problems of pile settlement and pile bottom mud that cannot be cleaned, and achieve low single pile bearing capacity, ensure reliability, and achieve Pile Process Simple Effects

Inactive Publication Date: 2005-09-14
王国奋
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reason is that the mud at the bottom of the pile cannot be removed, which will lead to the settlement of the pile

Method used

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  • Piling method B
  • Piling method B
  • Piling method B

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] Such as Figure 1-4 As shown, the immersed tube prefabricated steel concrete expanded bottom pile is composed of a prefabricated pile body 2 and a cast-in-place steel concrete base 1. The pile body 2 is docked with the base 1 in the hard soil layer under the positioning of the immersed tube by using the rib 3 at the bottom. Anchored to form a whole.

[0037] The diameter of the largest part of the base 1 should be greater than the diameter of the pile body 2. Optimally, the cross-sectional diameter d of the pile body 2 is 250-700 mm, and the ratio of the diameter D to d at the largest cross-section of the base 1 is generally 1.5

[0038] The specific shape of the cast-in-place reinforced concrete base 1 is not limited, but tests have shown that if Figure 2~4 The three classes of shapes shown are preferred: f...

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Abstract

The pile forming method C includes penetrating sunken tube with metal pile head through soft soil layer to reach the hard soil layer in the designed level; taking out the metal pile head, digging out soil inside the sunken tube to form the base expanding cavity, setting radial steel bar cage to hard soil layer if necessary; fixing the inserted ribs to the bottom in advance; setting inside the sunken tube prefabricated steel rib concrete pile, pouring concrete to designed level to form pile pedestal, and anchoring to the pile; drawing out the sunken tube to finish piling. By means of setting sunken tube and dry soil taking, the present invention ensures the reliability of the enlarged pedestal. The present invention has low cost / bearing force ratio.

Description

[0001] This application is a divisional application with the application number 97105261.1, the application date 970718, and the name is immersed tube prefabricated steel concrete expanded bottom pile and its pile forming method and equipment. Technical field: [0002] The invention relates to a pile-forming method for piles used in foundation engineering, in particular to a pile-forming method for immersed tube prefabricated steel concrete expanded bottom piles suitable for soft ground. Background technique: [0003] my country's coastal areas are all soft soil foundations. At present, in the pile foundation engineering of soft soil foundations, three types of piles are generally used: immersed tube piles, prefabricated piles and large diameter bored piles. Among them, the large-diameter bored pile has the highest bearing capacity, but its cost is high, its work efficiency is low, and the pollution is serious during construction. Therefore, it is generally only used in buil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D5/44E02D5/50
Inventor 王国奋
Owner 王国奋