A kind of CFG pile prefabricated pile head and CFG pile construction method
A construction method and technology of prefabricated piles are applied in sheet pile wall, foundation structure engineering, construction and other directions, which can solve the problems of pile body breaking to below the design elevation of pile top, affecting construction period, wasting manpower, etc., so as to improve the bearing capacity of composite foundation. Eigenvalues, avoid secondary excavation of earthwork, and save the effect of engineering cost
Inactive Publication Date: 2019-03-05
陈甫
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Problems solved by technology
[0002] In the construction of CFG piles (abbreviation of Cement Fly-ash Gravel, which means cement fly-ash gravel piles), the current construction organization requires that the top elevation of construction piles be no less than 0.5 meters higher than the design pile top elevation. After completion, manual excavation is required to reach the design elevation of the pile top. After the soil is cleared and transported, the pile head higher than the design elevation will be cut off. The second excavation and pile head cut-off will waste a lot of manpower and affect the construction period; When excavating and removing the pile head, it is easy to cause the pile body to break below the design elevation of the pile top, and remedial measures need to be taken. At the same time, due to the disturbance of the soil between the piles, the bearing capacity of the composite foundation will inevitably be reduced, and the process is cumbersome and time-consuming. Meet the needs of rapid construction
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[0031] The implementation of the present application will be described in detail below with reference to the accompanying drawings and examples, so as to fully understand and implement the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects.
[0032] Such as figure 1 , Figure 2a and Figure 2b As shown, the prefabricated CFG pile head of the present application is a column structure, and the CFG pile head is prefabricated by reinforced concrete. After the pile head steel skeleton is formed, it is formed by pouring concrete.
[0033] Such as image 3 As shown, the top of the CFG pile head column structure also includes a pile head cap, which is prefabricated by reinforced concrete. The pile head cap and the CFG pile head column structure are an integrated structure, and three 8mm steel bars are distributed at the same angle through the same circle center to form the pile head. Cap reinforced s...
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The invention discloses prefabricated pile heads of CFG piles and a CFG pile construction method. The prefabricated pile heads are prefabricated in factories in advance according to different pile diameters and user requirements, required prefabricated pile heads can be purchased before construction of the project CFG piles, then the CFG pile construction is carried out, the earthwork can be excavated to the pile top elevation at a time, CFG pile foundation hole forming and concrete pouring are carried out, and after the concrete is poured to the design pile top elevation, just the prefabricated pile heads of the CFG piles need to be inserted into the piles. The pile stress is uniform, meanwhile, the characteristic value of the single-pile bearing capacity of the CFG piles and the characteristic value of the bearing capacity of a composite foundation are increased, the workloads of secondary earthwork excavating and CFG pile head cutting can be avoided, the construction efficiency is greatly improved, and the project cost is saved.
Description
technical field [0001] The application belongs to the field of engineering construction and relates to a CFG pile prefabricated pile head and a CFG pile construction method. Background technique [0002] In the construction of CFG piles (abbreviation of Cement Fly-ash Gravel, which means cement fly-ash gravel piles), the current construction organization requires that the top elevation of construction piles be no less than 0.5 meters higher than the design pile top elevation. After completion, manual excavation is required to reach the design elevation of the pile top. After the soil is cleared and transported, the pile head that is higher than the design elevation is cut off. The second excavation and pile head cut-off will waste a lot of manpower and affect the construction period; When excavating and removing the pile head, it is easy to cause the pile body to break below the design elevation of the pile top, and remedial measures need to be taken. At the same time, becau...
Claims
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IPC IPC(8): E02D5/50
CPCE02D5/50
Inventor 陈甫彭成侯化坤陈振富柯国军甘元初
Owner 陈甫