Device and method for measuring bearing capacity of super-large-diameter steel pipe pile in situ
A super-large diameter, in-situ measurement technology, applied in the field of bearing capacity devices, can solve the problems of difficult design of steel pipe piles, inability to distinguish internal and external friction resistance, etc., to achieve convenient engineering applications, small size, and convenient installation. Effect
Pending Publication Date: 2021-08-06
CCCC THIRD HARBOR ENG
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Problems solved by technology
The most reliable way to obtain the bearing capacity of steel pipe piles is engineering measurement or field test. Although the test results obtained by the current measuring devices and methods can obtain the end resistance and side friction resistance of steel pipe piles, they cannot distinguish the inner and outer friction resistances. This brings difficulties to the pile sinking design of steel pipe piles
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[0044] The present invention will be further described below in conjunction with accompanying drawing.
[0045] see Figure 1 to Figure 4 , the device 100 for in-situ measuring the bearing capacity of super-large-diameter steel pipe piles of the present invention includes a pair of inner auxiliary steel plates 21, a pair of outer auxiliary steel plates 22, an inner measuring steel plate 31, an outer measuring steel plate 32, a plurality of inner wall strain sensors 51, A plurality of outer wall strain sensors 52, inner wall end resistance pressure sensors 61 and outer wall end resistance pressure sensors 62, wherein,
[0046] The top of the inner wall surface and the top of the outer wall surface of the steel pipe pile 10 are welded one by one with an inner rib 11 and an outer rib 12;
[0047] The inner auxiliary steel plate 21 is a curved plate adapted to the curvature of the inner wall surface of the steel pipe pile 10, and one end of the inner auxiliary steel plate 21 is p...
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The invention discloses a device for measuring the bearing capacity of a super-large-diameter steel pipe pile in situ. The device comprises a pair of inner auxiliary steel plates and a pair of outer auxiliary steel plates, an inner measuring steel plate and an outer inner measuring steel plate, a plurality of inner wall strain sensors and a plurality of outer wall strain sensors, an inner wall end resistance pressure sensor and an outer wall end resistance pressure sensor, and is characterized in that the pair of the inner auxiliary steel plates and the pair of outer auxiliary steel plates are welded on the inner wall surface and the outer wall surface of the steel pipe pile correspondingly; the inner measuring steel plate is connected between the pair of inner auxiliary steel plates; the outer measuring steel plate is connected between the pair of outer auxiliary steel plates; rubber is filled between the inner measuring steel plate and the steel pipe pile, and between the outer measuring steel plate and the steel pipe pile; the inner wall strain sensors are installed in the middle of the inner side face of the inner measuring steel plate at intervals in the length direction of the steel pipe pile; the outer wall strain sensors and the inner wall strain sensors are installed in the middle of the outer side face of the outer measuring steel plate in a one-to-one correspondence mode; and the inner wall end resistance pressure sensor and the outer wall end resistance pressure sensor are arranged in the middle of the bottom surfaces of the inner measuring steel plate and the outer measuring steel plate correspondingly. The device is small in size and convenient to install. The invention further discloses a method for measuring the bearing capacity of the super-large-diameter steel pipe pile in situ.
Description
technical field [0001] The invention relates to a device and method for in-situ measuring the bearing capacity of super-large-diameter steel pipe piles. Background technique [0002] Steel pipe piles are widely used in engineering. Since the lower end of the steel pipe pile is open, the soil pours into the pile pipe to form a soil plug during the pile sinking process, and its bearing capacity is mainly the end resistance and the external frictional resistance. At present, in order to meet the needs of engineering, the pile diameter of steel pipe piles is getting larger and larger, and the application of super large diameter steel pipe piles is increasing. At present, super-large-diameter steel pipe piles with a pile diameter of 6.5m and a circumference of more than 20m have appeared in the field of offshore wind power. This makes it difficult for the pile to completely occlude the soil plug, so the bearing capacity of the steel pipe pile is the internal and external frictio...
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IPC IPC(8): E02D33/00E02D5/28
CPCE02D5/285E02D33/00E02D2300/0029E02D2600/10
Inventor 富坤傅一帆邱松苗艳遂张洁李森王衔王炜霞
Owner CCCC THIRD HARBOR ENG