Centrifugal tubular pile with concrete of thin-wall steel pipe and production thereof

A technology of concrete pipe piles and thin-walled steel pipes, which is applied to sheet pile walls, reinforced molding, construction, etc., can solve the problems of increased construction costs, inconvenient construction, and high costs, so as to save production costs, enhance anti-shock ability, Combined with strong effect

Inactive Publication Date: 2006-03-15
SHANGHAI MCCZO ENG TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cost of choosing steel pipe piles or steel pipe concrete piles is relatively expensive, and the cost of construction will be increased after use; and the use of steel pipe piles has a phenomenon of large lateral displacement caused by excavation of foundation pits
If the method of pouring concrete into the steel pipe is used for reinforcement, the steel pipe must ensure sufficient wall thickness. Generally, the wall thickness of the steel pipe is 9.5-16mm, otherwise the steel pipe will yield due to excessive hammering force during the driving. On-site pouring of concrete will also bring inconvenience to the construction and increase the cost

Method used

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  • Centrifugal tubular pile with concrete of thin-wall steel pipe and production thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: The wall thickness of the steel pipe is: 6mm, and the concrete mix ratio is as follows:

[0021] Ordinary 42.5 grade cement: 515kg / m 3 , yellow sand: 640kg / m 3 , Gravel (5-25mm): 1216kg / m 3 , water: 100kg / m 3 , Water reducer: 10.7kg / m 3 .

[0022] The specific production method is: put the raw materials of the above mixing ratio into the mixer, the mixing time is 180 seconds, and the measured slump is 80mm. They are: low speed for 120 seconds, medium speed for 180 seconds, medium and high speed for 120 seconds, and high speed for 420 seconds. The maintenance adopts two forms of normal pressure steam health preservation and high pressure steam health preservation: a. Normal pressure steam health preservation: rest for 2 hours - heat up for 2 hours ——Constant temperature for 5 hours——Cooling temperature for 1 hour; b. High-pressure steam health preservation: heating up in the autoclave for 2 hours——Constant temperature for 4 hours——Cooling for 3 hours——...

Embodiment 2

[0023] Embodiment 2: The wall thickness of the steel pipe is: 5.9mm, and the concrete mix ratio is as follows:

[0024] Ordinary 42.5 grade cement: 515kg / m 3 , yellow sand: 640kg / m 3 , Gravel (5-25mm): 1216kg / m 3 , water: 100kg / m 3 , Water reducer: 10.7kg / m 3 .

[0025] The specific production method is: put the raw materials of the above mixing ratio into the mixer, the mixing time is 180 seconds, and the measured slump is 80mm. They are: low speed for 120 seconds, medium speed for 180 seconds, medium and high speed for 120 seconds, and high speed for 420 seconds. The maintenance adopts two forms of normal pressure steam health preservation and high pressure steam health preservation: a. Normal pressure steam health preservation: rest for 2 hours - heat up for 2 hours ——Constant temperature for 5 hours——Cooling temperature for 1 hour; b. High-pressure steam health preservation: heating up in the autoclave for 2 hours——Constant temperature for 4 hours——Cooling for 3 hours...

Embodiment 3

[0026] Embodiment 3: The wall thickness of the steel pipe is: 5.8mm, and the concrete mix ratio is as follows:

[0027] Ordinary 42.5 grade cement: 510kg / m 3 , yellow sand: 616kg / m 3 , Gravel (5-25mm): 1197kg / m 3 , water: 149kg / m 3 , Water reducer: 10.3kg / m 3 .

[0028] The specific production method is: put the raw materials of the above mixing ratio into the mixer, the mixing time is 180 seconds, and the measured slump is 80mm. They are: low speed for 120 seconds, medium speed for 180 seconds, medium and high speed for 120 seconds, and high speed for 420 seconds. The maintenance adopts two forms of normal pressure steam health preservation and high pressure steam health preservation: a. Normal pressure steam health preservation: rest for 2 hours - heat up for 2 hours ——Constant temperature for 5 hours——Cooling temperature for 1 hour; b. High-pressure steam health preservation: heating up in the autoclave for 2 hours——Constant temperature for 4 hours——Cooling for 3 hours...

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Abstract

A preparing progress of armoured concrete prefabricated member, thin-wall pipe centrifugal armoured concrete pipe pile is disclosed. It contains steal pipe and steel plate on ends of the pipe. Armoured concrete in the pipe and steal frame in inner layer. Steps of the progress contain form of steal frame, irrigating, centrifugating, evaporate protection and steam protection at high pressure and temperature.

Description

technical field [0001] The invention relates to a concrete pipe pile used in the civil construction industry and a production method thereof, in particular to a thin-walled steel pipe centrifugal concrete pipe pile and a production method thereof. Background technique [0002] At present, in some major projects, some construction units choose steel pipe piles or steel pipe concrete piles as the bearing foundation piles for buildings and large-scale equipment foundations, while many important industrial and civil buildings in the coastal area choose steel pipe piles as foundations. The amount of pile foundation is very huge. However, the cost of choosing steel pipe piles or steel pipe concrete piles is relatively expensive, which will increase the cost of construction after use; and the use of steel pipe piles has a phenomenon of large lateral displacement caused by excavation of foundation pits. If the method of pouring concrete into the steel pipe is used for reinforcement...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/30B28B21/56
Inventor 邰元左广生任嘉鼎王怀忠谢运青刘军吕庆霞
Owner SHANGHAI MCCZO ENG TECH
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