Underwater low-resistance pile foundation low-strain dynamic monitoring device

A low-resistance, pile-based technology, used in infrastructure engineering, infrastructure testing, construction, etc., can solve the problems of complex and difficult operation, high difficulty, decreased probe sensitivity, etc., and achieve the effect of saving test costs and reducing obstacles.
CN104452831AActive Publication Date: 2015-03-25天津中玻北方新材料有限责任公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
天津中玻北方新材料有限责任公司
Publication Date
2015-03-25

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Abstract

The invention discloses an underwater low-resistance pile foundation low-strain dynamic monitoring device. A driving hammer and a stress wave receiving probe are integrated into a stress wave generation receiving device, and meanwhile automation of falling and lifting of the driving hammer is achieved; the stress wave generation receiving device is fixed to the top of a pile foundation through the combination of a balancing weight and a fixing device, an adhesive gluing gelatinous layer is arranged at the lower end of the stress wave receiving probe, and water passages are formed between the outer wall of a pushing and pressing chamber and the inner wall of a shell and between the outer wall of the pushing and pressing chamber and the inner wall of a waterproof separating layer respectively to be used for reducing water resistance. The underwater low-resistance pile foundation low-strain dynamic monitoring device has the advantages that the device can be used in deepwater high pressure environments; the driving hammer and the detection probe are combined, so that manual work is saved, and the water resistance is small during knocking through the driving hammer.
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Description

technical field

[0001] The invention relates to the technical field of pile foundation detection, in particular to a pile foundation detection device in a high water pressure environment, specifically, a low-resistance pile foundation low-strain detection device for underwater use. Background technique

[0002] Large-diameter cast-in-situ piles are widely used because of their high bearing capacity and low construction noise. They are usually excavated manually or drilled into holes and poured into piles underground or underwater. The quality is affected by the construction process, especially the concrete pouring. It is difficult to control due to the influence of various factors such as working procedures, so the quality problems of pile foundations generally exist, such as too thick sediment, uneven pile body (local mud, segregation, honeycomb, etc.). Therefore, before proceeding to the next process, the quality and integrity of the concrete body of the pile must be inspe...

Claims

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