Project pile underwater concrete sampler and sampling method in construction

Abstract

The invention relates to an underwater concrete sampler of an engineering stake, which comprises a hand rocking handle, a measurement rope box, a measurement rope, a depth coder, a suspension ring, an iron ring, reinforcing steel bars, a chassis, etc. When the sampler is used for sampling, a drill is first used for drilling to reach designed depth, and then concrete is perfused to reach the depth of the stake top of a designed engineering stake. Next, a pulley is arranged at the edge of the drill, and the measurement rope is put on the pulley. Then, the sampler is put on the mouth of the drill, and the jointing point of the suspension ring and the measurement rope is used as the start depth of zero. Meanwhile, a zero position is ensured to be parallel to the ground. After that the hand rocking handle is rocked, scales of the depth on the depth coder or on the measurement rope can be observed as the measurement rope is put downwards. When the jointing point of the suspension ring and the measurement rope reaches the designed concrete surface or the stake top of the engineering stake, the measurement rope is lifted and then is put downwards, at last the sampler is lifted. If carpolites of the concrete are in an iron cage, the concrete is proved to exist on the jointing point of the suspension ring and the measurement rope. Thus, the sampler has the advantages of simple operation and accurate judgments.

Description

technical field [0001] The invention relates to a sampling device in building foundation engineering, in particular to a sampler for accurately judging the depth of poured concrete when concrete is poured into engineering piles in a building and a sampling method during construction. Background technique [0002] Due to the advantages of high bearing capacity and strong adaptability, concrete pouring piles have become the most commonly used engineering piles in buildings at home and abroad, that is, engineering piles made of concrete pouring have become one of the commonly used foundation types. [0003] China's land resources are extremely precious, and the development and utilization of underground space has attracted more and more attention, so buildings usually have basements. The construction steps are generally carried out according to the following procedures: construction of engineering piles in buildings; excavation of earth and rocks in the basement; construction o...

AI Technical Summary

Problems solved by technology

[0006] It is difficult to accurately obtain the depth of the concrete surface of the engineering pile because the position of the poured concrete surface is judged by the feel of the hand

In order to ensure the quality of construction, the construction personnel can only use the method of overfilling concrete to ensure that the length of the engineering piles meets the design requirements. Waste of concrete, and it affects the smooth excavation of soil and stone in the basement

[0007] In order to ensure the excavation of soil and rocks in the basement, cutting or blasting methods are usually used to remove the overfilled concrete part of the engineering pile, which not only increases the cost of manpower, but also affects the construction safety

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