Removable protection barrel, and protection barrel and method for cast-in-place pile construction in water

Abstract

The invention relates to a removable protection barrel used for cast-in-place pile construction in water. The removable protection barrel comprises one or more common protection barrel sections; the common protection barrel section at the bottommost is a bottom protection barrel section; the common protection barrel sections and the bottom protection barrel section are the same in diameter and structure and are each composed of an upper flange sheet, a lower flange sheet and a barrel body; and each upper flange sheet is connected to the top of the corresponding barrel body, and each lower flange sheet is connected to the bottom of the corresponding barrel body. The invention further provides a protection barrel composed of the removable protection barrel and a non-removable protection barrel, and a method for carrying out concrete cast-in-place pile construction in water by utilizing the protection barrel. By means of the protection barrel and the method for carrying out concrete cast-in-place pile construction by utilizing the protection barrel, the protection barrel on water surface can be operated and removed on the water for recycling. Compared with the manufacturing cost of atraditional non-removing treatment mode, the manufacturing cost of the protection barrel is slightly high, but the protection barrel can be repeatedly used, the using cost is very low, besides, no underwater operation is needed and the removing cost is low, so that great economic benefits and safety are showed.

Description

Technical field [0001] The invention belongs to the field of civil engineering construction, and relates to a protective tube for concrete cast-in-place pile construction in waters, in particular a protective tube for concrete cast-in-place pile construction in waters, and methods for making, using, dismantling and repeated turnover. Background technique [0002] In the construction of bored piles, the protective tube is essential. It is necessary to bury a protective tube to maintain the stability of the soil at the opening of the pile hole. In addition, it also has the functions of positioning and keeping the mud surface in the hole higher than the water level outside the hole. The protective tube is often made of steel. When positioning the protective tube, first take the center of the pile as the center of the circle and determine the position of the protective tube on the soil according to the radius of the protective tube. After the protective tube is in place, apply press...

AI Technical Summary

Problems solved by technology

[0004] When constructing cast-in-situ piles in water areas, the traditional methods for the casing are as follows: 1. After the construction of the pile is completed, the casing will not be dismantled, which increases the construction cost; 2. The casing is designed into two pieces The one-piece casing is connected with high-strength bolts, and after the construction of the cast-in-situ pile is completed, the divers will carry out underwater operations to remove it

With such a two-piece-in-one design, the large frictional force generated by the side pressure of the concrete during the use of the casing makes the demolition work laborious. At the same time, the safety of divers' underwater demolition operations is low, and the cost is also high.

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