Abstract

The paper presents the application of full-scale-model experiments to develop software and design a device for determining the degree of reinforcement bar rusting in concrete elements of high-rise buildings. Operation of the designed device is based on the dependence of the electromagnetic field surrounding a ferromagnetic body on its geometrical parameters and reduction of electromagnetic properties of the ferromagnet by oxidation. To receive primary information about the electromagnetic field an original measuring device is used, which is a matrix of high-precision electromagnetic transducers. In order to determine their position in relation to the control object distance sensors are used. The measurement results are transmitted to a computer model that is adjusted so that the results of modeling the electromagnetic field at the locations of transducers agreed with the results of direct measurements. The required model parameters are the geometric dimensions of the reinforced bar.

To raise the measuring device to the height of the building structure it is proposed to install it on a quadrotor.

Introduction

Over the past few decades the construction industry has made a significant step forward. Construction technology develops at a fast pace. It should be noted that construction projects vary in purpose, materials, height, standard life service, purpose and operation characteristics. Increasingly, there is a need for renovation of old buildings and structures due to changes in their functionality, improvement of design standards, as well as other factors. All this requires the development of a variety of technologies, techniques and special equipment for testing of buildings and structures, as well as quality control of building structures. Engineering survey of building structures is a separate area of construction activities, covering a range of issues related to ensuring the operational reliability of buildings, carrying out the repair work, as well as the development of project documentation for reconstruction of buildings and structures. The amount of the structural surveys is increasing every year, which is primarily a result of deterioration and obsolescence of buildings. Operation of buildings due to various reasons results in the deterioration of building structures, reduction and loss of their bearing capacity, deformation and strains in individual elements and the entire building. To develop measures to restore the performance of structures, it is necessary to carry out control survey operations to identify the causes of premature wear, the bearing capacity reduction. A special class of problems is connected with the examination of high-rise buildings. In this paper, in order to raise the measuring device to the height of the building structure it is proposed to install it on a quadrotor [1, 2].