Bottom expanding and piling method by demolishing of pipe sank prefabricated steel concrete bottom expansion pile

A technology of expanding bottom piles and sinking pipes, which is applied to sheet pile walls, buildings, and foundation structure engineering, etc., and can solve problems such as potential safety hazards for construction personnel, adverse effects on pile bearing capacity, and discounting of single pile bearing capacity, and achieves a simple process method Advanced, ensure the quality of pile foundation engineering, and improve the effect of single pile bearing capacity
CN101153490BInactive Publication Date: 2010-06-23王国奋
4 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
王国奋
Publication Date
2010-06-23
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
Patent Text Reader

Abstract

The invention discloses a construction pile foundation engineering and application method, in particular relates to a blasting enlarging base and piling method for immersed tube preformed steel concrete under-reamed pile. A first section of an immersed tube is pressed into an earth body, a second section of the immersed tube is screwed onto the upper end of the first section of the immersed tube,and the immersed tube is pressed onto a design elevation hard pan; a metal pile head is taken out, emulsified oil or ammonium antimony explosive is put in through an immersed tube opening, and the immersed tube is unsealed after the explosive is blasted; an air soil suction device is used to take soil; radial reinforced bars are put into a base cavity together with pan soil, preset strong cement grout on the ground are poured into the base cavity through the immersed tube opening, gravel is then poured into the base cavity to form a sand-free concrete base, and a preset steel concrete body isput in and is in abutting anchoring joint with the concrete base made on spot; and finally the second section of the immersed tube is pull out before the first section of the immersed is pull out, and cement grout is then poured into the clearance left by the immersed tube to form the pile. The invention takes clear soil without granular void soil and with high efficiency.
Need to check novelty before this filing date? Find Prior Art

Description

[0001] This application is a divisional application with the application number: 200610047831.X, the application date: September 21, 2006, and the invention title: the blasting bottom expansion and pile forming method of immersed tube prefabricated steel concrete bottom expansion piles. technical field

[0002] The invention relates to a construction pile foundation engineering and a construction method, in particular to a blasting bottom expansion and pile forming method of immersed tube prefabricated steel concrete bottom expansion piles. Background technique

[0003] It is well known that the quality of building foundation works plays a vital role in the influence of building quality, so each construction unit not only pays attention to the construction quality of above-ground buildings, but also pays more attention to the quality of foundation works. And invest in scientific research to tap the potential of the pile foundation project, so that it can improve the utilizati...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More