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A platform for research: civil engineering, architecture and urbanism
Low-strain dynamic monitoring device for underwater pile foundation
The invention discloses a low-strain dynamic monitoring device for an underwater pile foundation. A driving hammer and a stress wave receiving probe are arranged in a stress wave generating and receiving device together, the driving hammer can be released and retracted automatically, the stress wave generating and receiving device is fixed to the top of the pile foundation through the combination of a balance weight and a fixing device, an attaching colloidal matter layer is arranged at the lower end of the stress wave receiving probe, an openable water resistant door is arranged on the lower portion of a left cavity, rubber is arranged on the lower surface of the water resistant door, and when a pile is pressed by the stress wave generating and receiving device, a frame block presses the pile to achieve sealing together with a pile cap and then the water resistant door is opened. In this way, the left cavity contains no water all the time, and knocking effect can not be affected by friction between the driving hammer and water when the driving hammer falls down. A length adjuster is arranged to adjust the stretching length of the fixing device so that the low-strain dynamic monitoring device can be adapted to underwater pile foundations with different pile diameters.
Low-strain dynamic monitoring device for underwater pile foundation
The invention discloses a low-strain dynamic monitoring device for an underwater pile foundation. A driving hammer and a stress wave receiving probe are arranged in a stress wave generating and receiving device together, the driving hammer can be released and retracted automatically, the stress wave generating and receiving device is fixed to the top of the pile foundation through the combination of a balance weight and a fixing device, an attaching colloidal matter layer is arranged at the lower end of the stress wave receiving probe, an openable water resistant door is arranged on the lower portion of a left cavity, rubber is arranged on the lower surface of the water resistant door, and when a pile is pressed by the stress wave generating and receiving device, a frame block presses the pile to achieve sealing together with a pile cap and then the water resistant door is opened. In this way, the left cavity contains no water all the time, and knocking effect can not be affected by friction between the driving hammer and water when the driving hammer falls down. A length adjuster is arranged to adjust the stretching length of the fixing device so that the low-strain dynamic monitoring device can be adapted to underwater pile foundations with different pile diameters.
Low-strain dynamic monitoring device for underwater pile foundation
ZHANG ZHEWEI (author) / LI FEIBO (author)
2015-05-13
Patent
Electronic Resource
English
IPC:
E02D
FOUNDATIONS
,
Gründungen
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