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Underwater sand conpaction pile composite foundation test system

A technology of composite foundation and test system, which is applied in the field of underwater compacted sand pile composite foundation test system, can solve the problems of sand pile performance not fully clarified, achieve good operability and safety, and eliminate the effect of influence

Inactive Publication Date: 2011-05-18
CCCC THIRD HARBOR ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As my country's underwater compacted sand piles are still in their infancy, the performance of sand piles has not been fully clarified, and the effect of compacted sand piles on soft soil foundation is only measured through standard penetration tests.

Method used

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  • Underwater sand conpaction pile composite foundation test system
  • Underwater sand conpaction pile composite foundation test system
  • Underwater sand conpaction pile composite foundation test system

Examples

Experimental program
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Embodiment

[0017] This test is selected to be carried out in the area to the south of Dawugui Mountain in Xigang District, which is proposed to be built in Yangshan Deepwater Port Area. According to the test site data provided by the survey and design unit, the soft soil layer thickness of the test site is about 20m, and the mud surface elevation is - About 9.17m, the use of sand piles to strengthen the soft soil foundation in this area has certain pertinence and representativeness. The highest tide level in this area is +5.73m, the lowest tide level is -0.23m, the average high tide level is +3.88m, the average low tide level is +1.14m, the maximum tidal range is 5.03m, and the average tidal range is 2.74m. The average velocity of the maximum high tide in this area is 1.40m / s, and the average velocity of the maximum ebb tide is 1.64m / s.

[0018] This test is mainly carried out according to the following specifications:

[0019] "Code for Water Transport Engineering Survey" JTJ203-2001; ...

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Abstract

The invention discloses an underwater sand conpaction pile composite foundation test system, which comprises a counter-force system, a loading system, a reference system and a testing platform. The counter-force system comprises an anchoring pile and a pile-testing counter-force frame; the loading system comprises an oil pressure jack system and a force transmission system, wherein a jack of the loading system transfers a load to a load plate through a circular disc and a force transfer rod, a composite foundation is loaded by using the load plate, and the load is transferred to the anchor pile through the circular disc and the pile-testing counter-force frame and finally slaked into the foundation soil. Because the loading is carried out by using the technical scheme, the invention has the following advantages that: the loading process is finished by changing the oil pressure of the jack, thereby the maneuverability and the security are better; and because of smaller influence of water current and sea levels, the influence on the testing result by the wave flow load is eliminated to the greatest extent.

Description

technical field [0001] The invention relates to an underwater compacted sand pile composite foundation test system. Background technique [0002] The greater the displacement rate of the compacted sand pile, the better the drainage channel formed by it, and the less consolidation time is required. For compacted sand piles with high replacement rate, the improvement of foundation strength mainly depends on the influence of sand piles on the foundation strength; however, for ordinary sand piles with low replacement rate, the improvement of foundation strength depends on two main factors: sand piles The strength of the soil between the piles is enhanced due to the influence of its own strength and the drainage effect of the sand piles. As my country's underwater compacted sand piles are still in their infancy, the performance of sand piles has not been fully understood, and the effect of compacted sand piles on soft soil foundation is only measured through standard penetratio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D33/00
Inventor 尹海卿朱光裕顾春光吴心怡张曦徐明贤曹金宝章文渊
Owner CCCC THIRD HARBOR ENG
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