Vibrating piling-hammer sink-pull steel protective-cylinder piling method and special steel protective cylinder

A technology of steel casing and piling hammer, which is applied in sheet pile wall, construction, infrastructure engineering, etc., can solve the problems of bad influence of pile body concrete, occupation of working time, increase of production and construction cost, etc.

Inactive Publication Date: 2006-03-08
HEBEI CONSTR & INVESTIGATION RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are also some disadvantages: one is that the drilling rig is used to insert and pull out the steel casing, and the drilling rig must be equipped with a special swinging device. The attached swinging device affects the flexibility of the drilling rig and brings inconvenience to the operation of the drilling rig. At the same time, it takes up working time, affects the efficiency of hole formation, and cannot realize the drilling construction flow operation; secondly, the steel casing needs to use special materials a

Method used

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  • Vibrating piling-hammer sink-pull steel protective-cylinder piling method and special steel protective cylinder
  • Vibrating piling-hammer sink-pull steel protective-cylinder piling method and special steel protective cylinder
  • Vibrating piling-hammer sink-pull steel protective-cylinder piling method and special steel protective cylinder

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Experimental program
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Embodiment

[0036] 1. The vibratory piling hammer sinking and drawing steel casing pile forming method given in this embodiment includes the following steps:

[0037] (1) Sink into steel casing

[0038] a. Set pile position control points

[0039] After placing the pile position, use four φ16-φ20 steel bars to drive into the ground no less than 0.5 meters as the control point, and the two connecting lines of the symmetrical control point intersect at the pile position point, and locate it after inspection;

[0040] b. Place the combined steel casing positioning frame at the hole, and then locate the positioning frame (simple steel frame for observing the horizontal relative position of the steel casing) according to the control pile points;

[0041] c. The pre-connected vibratory piling hammer and steel casing group (the connection length is determined according to the required sinking depth) is hoisted into the steel casing positioning frame by a crawler crane that is suitable for the l...

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PUM

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Abstract

This invention discloses a method for piling including 1, sinking a steel fender drum, 2, holing, 3, pulling up the steel fender drum. After the concrete is filled, a vibration hummer is used to pull the steel fender up first and then stops working when a hoist can pull up the steel fender directly. This invented fender drum is composed of at least two sections of drum units, connection ears are distributed on the outside walls of both ends and those on the two adjacent units are symmetric and connected by bolts.

Description

technical field [0001] The invention relates to a pile foundation construction technology, in particular to a method for forming a pile by sinking and pulling out a steel casing with a vibrating piling hammer. Background technique [0002] In construction, bored piles are commonly used foundation forms. In the construction of bored piles, when encountering huge thick soft plastic, flow plastic and sensitive strata, it is generally necessary to lower the steel casing to isolate the weak stratum in order to safely drill into the hole. At present, high-efficiency drilling machines such as rotary drilling rigs have been widely used in the field of pile foundation construction, and more and more have entered the areas of extremely thick soft plastic and flow plastic. Due to the soft ground, the design pile length is relatively deep, and the rotary drilling hole has no circulating mud retaining wall, so a deep steel casing needs to be installed to meet the hole forming requiremen...

Claims

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Application Information

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IPC IPC(8): E02D5/38E02D5/66
Inventor 聂庆科张春来商卫东王国辉胡建敏
Owner HEBEI CONSTR & INVESTIGATION RES INST
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