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Overall process construction method for hammering pile, special device therefor and application thereof

A construction method and a technology of a special device, which are applied in the directions of sheet pile wall, foundation structure engineering, foundation structure test, etc., can solve the problems of a construction method without internal strike and its special device, etc.

Inactive Publication Date: 2011-06-08
毕建东
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] But so far, engineering applications are mainly external driving piles, and there are very few internal driving piles, and there is no whole-process construction method and special equipment for internal driving piles

Method used

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  • Overall process construction method for hammering pile, special device therefor and application thereof
  • Overall process construction method for hammering pile, special device therefor and application thereof
  • Overall process construction method for hammering pile, special device therefor and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0276] Embodiment 1, the method of carrying out the whole process of construction using the pile-pressing pile machine of the immersed tube-filled pile of 3.1 or the pile-pressing machine of the immersed-pipe cast-in-place pile of 3.2:

[0277] A site, soil layer from top to bottom: 1m thick miscellaneous fill, 5m thick soft-plastic silty clay, 2m thick fully weathered mudstone, 2m thick strongly weathered mudstone, and the following is moderately weathered mudstone.

[0278] The designed pile diameter is 800mm, the pile length is 10.5m, and the ultimate bearing capacity of a single pile is 1,500 tons, of which: the ultimate resistance of the pile tip is 1,300 tons, and the ultimate resistance of the pile side is 200 tons.

[0279] The tonnage of the pile machine is 680 tons; the internal hammer 30 weighs 8 tons; the pile pipe 35 is 15m long, 800mm in outer diameter, 20mm thick, and the lower end is partially thickened outward by 10mm.

[0280] 1. Test pile:

[0281] ①A type ...

Embodiment 2

[0297] Embodiment 2, the method for carrying out the whole process of construction with the vibrating pile machine of the immersed pipe grouting pile of 3.3:

[0298] Site conditions, pile size and bearing capacity, internal hammer 30 and pile pipe 35 are all the same as in Embodiment 1, and a 120 kW vibrating pile driver is used.

[0299] 1. Test pile:

[0300] 1. adopt the pile tip with the A-type test of embodiment 1;

[0301] ②Sinking the pile tip for Type A test: First, use a pile driver to pass the vibrating head 39 to vibrate the pile tube 35, and sink the Type A test pile tip until the vibration penetration reaches 30mm / min (at this time, the Type A test pile tip Enter the strongly weathered mudstone (about 0.1m), start to hit the A-type test pile tip with the internal hammer 30, and the pile pipe 35 follows up; Stop when the penetration is 10mm (at this time, the A-type test pile tip enters the moderately weathered mudstone for about 0.5m, and the pile length is 10....

Embodiment 3

[0312] Embodiment 3, the method for carrying out the whole process of construction using the hammer pile machine of the immersed pipe grouting pile of 3.4:

[0313] Site conditions, pile size and bearing capacity, internal hammer 30 and pile pipe 35 are all the same as in Embodiment 1, and a hammer pile driver with a diesel hammer weight of 6 tons is used.

[0314] 1. Test pile:

[0315] 1. adopt the pile tip with the A-type test of embodiment 1;

[0316] ②Sinking the pile tip for Type A test: First, use a pile driver to hammer the pile tube 35 through the hammer head 41, sink the pile tip for Type A test, until the penetration of the diesel hammer reaches 30mm / 5 hours when the falling distance of the diesel hammer is 3m. (At this time, the tip of the Type A test pile enters the strongly weathered mudstone for about 0.1m), start hitting the Type A test pile tip with the internal hammer 30, and the pile pipe 35 follows up; the falling distance of the internal hammer 30 is smal...

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Abstract

The invention provides an overall process construction method for a hammering pile, a special device therefor and application thereof. The special device used comprises special pile points, a reinforcing cage for testing and a special piling machine, wherein the special pile points comprise a pile point for testing and a pile point for piling; and the special piling machine is a piling machine equipped with a hammerless gun which is also taken as a pressure lever and having loading function. The overall process construction for the hammering pile comprising pile testing, pile driving and pilemeasuring is completed systematically by measuring pile end resistance through a hammering method matched with pile sinking, a small area method or an assistance method, and by measuring pile side resistance through an isolation method or the assistance method, so that the method realizes the aims of testing, driving and measuring a timber pile by a small piling machine. The method and the specialdevice therefor adopted can complete the overall process construction of pile testing, pile driving and pile measuring of a pipe-sinking-filling pile or a prefabricated concrete hollow pile with theultimate bearing capacity of 1,500 tons under the condition that the pile pressing tonnage is only 680 tons or even 300 tons, and have good comprehensive benefit.

Description

technical field [0001] The invention relates to a whole-process construction method of internal driving piles, a special device and application thereof, and belongs to the technical field of pile foundation construction. Background technique [0002] The whole process of pile construction includes three major steps: ①Pile test: trial driving or pressure test before formal pile construction; Concrete and other specific steps; ③ Pile measurement: test the bearing capacity after making piles. [0003] At present, pile construction generally only includes two steps of test pile and pile making, and because the test pile is relatively poor in guiding the pile, and the pile cannot be tested, the comprehensive benefit is not high, especially for end bearings. The higher the bearing capacity of the pile, the more prominent this problem will be. [0004] When the bearing capacity of piles is low, only static pressure steel pipe piles or precast concrete hollow piles can carry out t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D5/22E02D5/72E02D7/00E02D5/38E02D33/00
Inventor 毕建东
Owner 毕建东