A steel pipe concrete pile structure and its construction method
A technology of steel pipe concrete piles and steel pipe piles, which is applied in the direction of foundation structure engineering, sheet pile walls, buildings, etc., can solve the problems of reduced bearing capacity, uneven thickness of concrete, decreased bearing capacity, etc., and achieve the effect of enhanced bearing capacity
Active Publication Date: 2021-11-09
SICHUAN DEPT OF TRANSPORTATION HIGHWAY PLANNING PROSPECTING & DESIGN RES INST
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Problems solved by technology
[0004] In order to make up for the above deficiencies, the present invention provides a steel pipe concrete pile structure, which aims to improve the eccentricity of the bottom hole when the steel pipe is installed, resulting in the uneven thickness of the concrete poured between the bottom hole and the steel pipe in the later stage, and the bearing capacity is greatly reduced. The ground is not vertical, further causing the problem of load drop
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[0047] At present, during the construction of steel pipe concrete piles, a tripod and a locator are usually first laid on the pipe pins of the steel pipe, and then the steel pipe cloth, the tripod and the locator are inserted into the bottom hole at the same time. The steel pipe is positioned, but because the depth of the bottom hole is long, the tripod and the locator are installed at the bottom of the steel pipe. When the steel pipe reaches the bottom of the bottom hole, the tripod and the locator often cannot make the entire steel pipe in the middle of the bottom hole. As a result, the steel pipe is installed eccentrically in the bottom hole, which leads to the uneven thickness of the concrete poured between the bottom hole and the steel pipe in the later stage, which leads to a significant drop in bearing capacity, and the entire steel pipe is not vertical to the ground, further causing a drop in load capacity.
[0048] In order to make up for the above deficiencies, the pr...
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The invention provides a steel pipe concrete pile structure and a construction method thereof, which belong to the technical field of steel pipe concrete piles and include a steel pipe pile body and a brace mechanism. The steel pipe pile body includes a seamless steel pipe and a connecting steel pipe, and the ends of the two seamless steel pipes are sleeved at both ends of the seamless steel pipe. The tensioning mechanism includes a connecting ring, a first mounting rod, a baffle plate, a first spring, a second mounting rod, a tensioning shaft and a first connecting block. One end of the first mounting rod is fixed to the connecting ring and the other end is fixed to the first connecting ring. Block, the first spring is set in the first installation rod, one end of the second installation rod is fixed to the first connection block, the other end is fixed to the seamless steel pipe, the tensioning shaft is arranged in the second installation rod, the tensioning shaft Through the pipe wall of the seamless steel pipe, the baffle is arranged between the first spring and the tensioning shaft. The steel pipe pile body of the above structure realizes automatic alignment, and the thickness of the poured concrete is the same, the steel pipe pile body is in a vertical state with the ground, and the bearing capacity of the steel pipe pile body will not be reduced.
Description
technical field [0001] The invention relates to the technical field of steel pipe concrete piles, in particular to a steel pipe concrete pile structure and a construction method thereof. Background technique [0002] Concrete for concrete piles includes piles made of ordinary reinforced concrete and prestressed concrete. It has the advantages of saving wood and steel, being difficult to use for a long time, and low cost. It has been widely used in foundation engineering of hydraulic construction, industrial construction, civil construction and bridges. , It is also commonly used for anti-skid or water isolation of slope and foundation pit support. When constructing super high-rise buildings in areas with very thick soft soil cover, and constructing important buildings such as bridges and wharfs across water, super-long piles of 50M to 70M are often used. Practice has proved that the bearing capacity of super-long piles is often controlled by the strength of the pile body. B...
Claims
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IPC IPC(8): E02D13/04E02D5/38E02D5/52E02D15/04
CPCE02D5/38E02D5/523E02D5/526E02D13/04E02D15/04E02D2250/0023
Inventor 刘天翔程强王丰
Owner SICHUAN DEPT OF TRANSPORTATION HIGHWAY PLANNING PROSPECTING & DESIGN RES INST