Anti-floating construction method and device for reinforced cage of large-diameter bored pile
A technology of bored cast-in-place piles and construction methods, which are applied in protection devices, sheet pile walls, infrastructure engineering, etc., can solve the problems affecting the construction quality of bored (punched) cast-in-place piles and the floating of steel cages, and achieve anti-floating effects. Obvious, low cost, easy to make and install
Active Publication Date: 2016-09-28
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Problems solved by technology
[0002] During the construction of cast-in-place concrete piles, the force on the reinforcement cage is the friction caused by the float and the buried depth of the lower part when the mud and concrete mixture move upward. The resultant force of the friction of concrete, the self-weight of the steel cage and the pressure generated by the fixing of the steel cage, if the floating force exceeds the downward force, the steel cage will float up, which directly affects the construction quality of the drilled (punched) hole cast-in-situ pile
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[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings, but not as any limitation to the present invention.
[0017] Embodiment of the present invention: when implementing a kind of large-diameter bored cast-in-place pile reinforcement cage anti-floating construction method of the present invention, as shown in Fig. 1 As shown, the method is to first weld the steel cage 7 Placed vertically in large diameter boreholes 2 In cast-in-situ pile, reinforcement cage 7 The top of the cage is higher than the height of the large-diameter drilling hole; a steel pipe frame is set on the top of the steel cage, and a counterweight is set on the steel pipe frame 3 ; Then carry out perfusion construction, through the counterweight 3 prevent steel cage 7 Floating occurs during the pouring process to ensure the pouring quality of the reinforcement cage of the large-diameter bored pile. The weight of the counter...
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Abstract
The invention discloses an anti-floating construction method and device for a reinforcement cage of a large-diameter bored pile. In the method, the welded reinforcement cage is vertically placed in the large-diameter bored pile, and the top of the reinforcement cage is higher than the large-diameter pile. The height of the drilling hole; set up a steel pipe frame on the top of the steel cage, and set a counterweight on the steel pipe frame; then carry out the pouring construction, and use the counterweight to prevent the steel cage from floating during the pouring process, so as to ensure that the large-diameter bored piles The filling quality of the reinforcement cage. The invention is suitable for the construction of reinforced cages for drilled (punched) hole piles with a diameter of 3m or more. It has the advantages of obvious anti-floating effect, simple manufacture and installation, and low input cost.
Description
technical field [0001] The invention relates to an anti-floating construction method and device for a steel cage of a large-diameter bored cast-in-situ pile and belongs to the technical field of construction of cast-in-situ piles for buildings. Background technique [0002] During the construction of cast-in-situ concrete piles, the force on the reinforcement cage is caused by the friction of the floating friction generated by the upward movement of the mud and concrete mixture, the friction of the buried deep concrete, the self-weight of the reinforcement cage and the fixation of the reinforcement cage. The resultant force of the pressure, if the floating force exceeds the downward force, the steel cage will float up, which directly affects the construction quality of the drilled (punched) hole grouting pile. Contents of the invention [0003] The object of the present invention is to provide a large-diameter bored pile reinforcement cage anti-floating construction method...
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IPC IPC(8): E02D5/38E02D31/12
CPCE02D5/38E02D31/12
Inventor 陈寿忠任远敏朱春莲钟震曹华
Owner CCFED THE FIRST CONSTR & ENG