Piezoelectric-material-based construction method for monitoring concrete filled steel tubular member quality through impedance method

Abstract

The invention discloses a piezoelectric-material-based construction method for monitoring concrete filled steel tubular member quality through the impedance method. According to the working principle of a PZT substrate, multi-section and multi-layer arrangement is performed on intelligent aggregate and a PZT reactor. The construction method aims to solve the problems that the existing concrete filled steel tubular member quality monitoring method stays in the test period and is poor in practicability to facilitate data acquisition and contrastive analysis. Multiple concrete member quality indicators, such as concrete filling density and the interface bonding quality of concrete on a tube wall, can be detected through one-time construction; in addition, the impedance method is utilized to verify a result, the operation is simple and the detection accuracy is high; the material can be recycled and the utilization rate is high; the detection and the engineering can be carried out simultaneously, the construction of an upper major structure can not be affected, so that the investment in construction period cost is reduced, and the on-line monitoring can be carried out in real time; the method is particularly suitable for evaluating the concrete pouring quality and the interface bonding quality of concrete filled steel tubular members.

Description

technical field [0001] The invention relates to a construction method for monitoring the quality of steel pipe concrete members, in particular to a construction method based on piezoelectric materials, capable of detecting the concrete filling density of steel pipe concrete members and the bonding quality of the steel pipe interface at the same time in one construction, and can be applied online. Background technique [0002] my country's super high-rise building construction is in a period of rapid development. Due to its excellent structural performance, CFST columns are widely used in super high-rise buildings, and the cross-section of CFST members is getting larger and larger. A certain number of original partitions and vertical stiffeners are often arranged on the inner wall of the steel pipe of this type of large-section concrete-filled steel pipe column. The concrete below the junction of the original partition and the steel pipe cannot be vibrated directly and effect...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a construction method based on the piezoelectric material-based mass impedance method of concrete-filled steel pipe components to solve the problems that the current detection of concrete-filled steel tube components stays in the test stage and has poor practicability in practical applications. At the same time, it solves the problem that the existing monitoring methods only Single indicator, if other indicators are detected, the construction needs to be re-arranged, the material recovery rate is low, and the utilization rate is low; it also solves the problem of low monitoring accuracy and the problem that the existing technology only uses one method for monitoring and cannot be applied to online monitoring.

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