Reinforcement cage feeding method of long auger drilling press-grouting pile

A technology of long helical drilling and reinforcement cage, applied in sheet pile wall, construction, infrastructure engineering and other directions, can solve the problems of inability to reach the preset position and easy to be stuck.

Inactive Publication Date: 2016-03-23
SHANGHAI ERSHIYE CONSTR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way of construction, due to the rough and uneven inner surface of the hole and the injection of concrete, the steel cag

Method used

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  • Reinforcement cage feeding method of long auger drilling press-grouting pile
  • Reinforcement cage feeding method of long auger drilling press-grouting pile
  • Reinforcement cage feeding method of long auger drilling press-grouting pile

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Embodiment Construction

[0017] The present invention is further illustrated below by specific examples.

[0018] A pile foundation project adopts long auger bored grouting piles, the natural floor elevation is -0.5m, and the pile top elevation is -1.9m; ​​the following methods are used for construction:

[0019] 1. Preliminary drilling operation: drill to the design depth first, then lift the drill 200mm, pump in the concrete, and then lift the drill while pumping in the concrete. Among them, the concrete slump must be greater than 200mm to facilitate insertion of the reinforcement cage;

[0020] 2. If Figure 1~Figure 4 As shown, adopting the cage column 1 to carry out the reinforcement cage feeding operation includes the following steps:

[0021] Step 1. The pushing device includes vertical rods and hoops. There are multiple vertical rods arranged vertically, and the hoops surround the vertical rods to form a cage-shaped column 1;

[0022] Step 2. Inject concrete into the pile hole to the elevati...

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Abstract

The invention relates to the field of building construction, in particular to a reinforcement cage feeding method of a long auger drilling press-grouting pile. The reinforcement cage feeding method of the long auger drilling press-grouting pile is characterized by comprising the following steps that 1, a pushing device is manufactured according to hole diameters, and the pushing device comprises a plurality of vertical rods and a plurality of hoops which surround the vertical rods to form cage-shaped columns; 2, concrete is poured into a pile hole to reach a standard height; 3, a reinforcement cage is inserted into the pile hole; 4, the cage-shaped columns are lifted, and the bottoms of the cage-shaped columns align to and abut against the tail end of the reinforcement cage; 5, a vibrating tamper is started to convey the reinforcement cage to the designed standard height position of a pile bottom through the cage-shaped columns; and 6, the device and the vibrating tamper are together lifted out of the pile hole. According to the reinforcement cage feeding method, the adopted cage-shaped columns are easy to manufacture and convenient to use so as to effectively accelerate the feeding operation of the reinforcement cage, and the cage-shaped columns can be recycled and reused, so that the cost of construction operation is lowered, and the operation efficiency is improved.

Description

technical field [0001] The invention relates to the field of building construction, in particular to a reinforcement cage feeding method for long auger bored grouting piles. Background technique [0002] The construction technology of the long auger bored grouting pile is to use the drilling rig to drill the hole first, and after the hole reaches the design depth, the concrete is pumped while lifting the drill, and finally sent into the steel cage. In such a construction, due to the rough and uneven inner surface of the hole and the injection of concrete, the steel cage with the same rough surface is likely to be stuck during the feeding process or cannot be transported to the preset position. Contents of the invention [0003] The purpose of the present invention is to provide a sending method that enables the reinforcement cage to be sent to the preset position accurately, conveniently and quickly. [0004] In order to achieve the above object, the present invention is ...

Claims

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Application Information

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IPC IPC(8): E02D5/36E02D7/18
CPCE02D5/36E02D7/18E02D2300/0029
Inventor 张国杰杨建
Owner SHANGHAI ERSHIYE CONSTR CO LTD
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