Underwater concreting sampler of bored pile

Abstract

The invention relates to an auxiliary device used in underwater concreting in pile foundation engineering and in particularly relates to an underwater concreting sampler of a bored pile for carrying out sampling testing on an underwater concreting state. The underwater concreting sampler of the bored pile comprises a section of hanger rope, the lower end of the hanger rope is connected with a hanging beam, two arms of the hanging beam are connected with the cylinder wall at the upper end of a storage cylinder in a shape of a cylinder, an openable or closable valve is arranged at the bottom of the storage cylinder, the valve consists of two semi-circular door plates, a rotary shaft arranged on the diameter is arranged at the opening at the bottom of the storage cylinder, the two semi-circular door plates are both articulated to the rotary shaft, a stop pin is also arranged on the inner wall at the lower end of the storage cylinder, and the edges of the semi-circular door plates drop on the stop pin when the valve is closed. The underwater concreting sampler of the bored pile has a simple structure, is easy to process, is low in manufacture cost and is convenient to use; and with the adoption of the underwater concreting sampler of the bored pile, during construction, the storage cylinder is put into a pouring hole through the hanger rope, whether pouring is in place is simply judged by a sampling result of the storage cylinder without deep influence by a pile foundation, and the accurate position on the top surface of concrete can be exactly and intuitionally judged, so that quality accidents generated in pile foundation construction are avoided.

Description

Technical field [0001] The invention relates to an auxiliary device used in underwater concrete pouring of a pile foundation project, in particular to a bored pile underwater concrete pouring sampler for sampling and testing the underwater concrete pouring state. Background technique [0002] Because the bored pile foundation has the advantages of large bearing capacity, good stability, small settlement, less affected by the construction water level or groundwater level, and the development of construction technology and technology, there are many types of construction machinery to choose from. Continuously develop to ultra-deep and ultra-large diameter piles and apply them to large bridge foundations. However, as a concealed project, the quality control of the bored pile is difficult, especially when the underwater concrete is poured, the concrete is always under the mud in the hole, and the placement of the concrete cannot be observed. In order to judge the height of the underw...

AI Technical Summary

Problems solved by technology

Since the depth of concrete pouring needs to be controlled by the feeling of the construction personnel, it is difficult to accurately judge the exact position of the concrete due to the influence of various factors such as construction experience, on-site concrete quality, and the weight of the measuring hammer, and it is inevitable that the conduit will be buried too deep during the construction process. Problems such as the inability to pull out or the hollowing out of the conduit caused major quality accidents such as broken piles, which not only brought quality hidden dangers to

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