Removable protection barrel, and protection barrel and method for cast-in-place pile construction in water
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A technology of cast-in-situ piles and casings, which is applied in the direction of sheet pile walls, foundation structure engineering, construction, etc., can solve the problems of increased construction cost, laborious demolition work, low safety, etc., and achieves accelerated construction speed, low demolition cost, and easy to use The effect of low cost
Pending Publication Date: 2018-10-26
SINOHYDRO BUREAU 12 CO LTD
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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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Embodiment 1
[0102] Production:
[0103] Several concrete cast-in-place piles are to be constructed in a water area. Due to the change of water depth, the length of the removable protective tube is 5-28 meters. The inner diameter of the removable section of the protective tube is 1.0 m, divided into four equal parts along the circumference. Ordinary protective cylinders are made 5 meters, 2 meters, and 1 meter long to suit the change of removable length caused by changes in water depth.
[0104] The ordinary protective cylinder and the bottom section protective cylinder are all made of steel. The cylinder body, flange piece, cylinder piece connecting plate, and lifting lugs are all 8 mm thick and connected by welding.
[0105] The tie rod is a square steel tube: 40 mm × 40 mm × 4 mm; the rotating rod is a round steel tube: a diameter of 48 mm × 3.5 mm.
[0106] The locking spring has an inner hole diameter of 60 mm, a working load of 8.0 kN, and a working range of 10 mm.
[0107] The diameter of t...
Embodiment 2
[0116] Production:
[0117] Several concrete cast-in-place piles need to be constructed in a sea area. Due to the change of water depth, the length of the removable protective tube is 12 to 32 meters. The inner diameter of the removable section of the protective cylinder is 1.8 meters, divided into four pieces along the circumference. The piece-type protective tube is made 5 meters, 2 meters long, and 1 meter to suit the change of the removable length caused by the change of water depth.
[0118] Ordinary protective cylinder and bottom section protective cylinder are made of steel. The cylinder body, flange piece, cylinder piece connecting plate, and lifting lugs are all 10 mm thick steel plates and welded.
[0119] The tie rod is a square steel tube: 40 mm × 40 mm × 4 mm; the rotating rod is a round steel tube: a diameter of 48 mm × 3.5 mm.
[0120] Locking spring, inner hole diameter 60 mm, working load 15 kN, working range 10 mm.
[0121] The diameter of the lock shaft is 45 mm.
[...
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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...
Claims
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Application Information
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