Разработка датчика для определения напряжений внутри железобетонных конструкций. Часть 2

DOI: 10.37153/2618-9283-2023-5-40-52

Authors:  
Rubric:     Theoretical and experimental studies   
Key words: pressure sensor, strain gauge, results of experimental work, special limit state, reinforced concrete structures
Annotation:

The publication is the second part of a study devoted to the development of an optimal design of a voltage sensor that allows the determination of stresses in the cross section of small-sized laboratory samples of monolithic solid-state structures made of concrete, reinforced concrete, polymer concrete, gypsum and other monolithic materials. The tasks of the experimental design were the development of a stress sensor designed to work inside monolithic structures, which has the ability to stably make measurements during the appearance and formation of cracks, as well as ease of manufacture and low cost of the components. The developed sensors make it possible to determine stresses in laboratory structures with high accuracy without significantly affecting the stress-strain state of the section, which makes it possible to determine the stress state of the section at different stages of the structural element.

In the first part of the study, the results of which were presented in the materials [2], the experience of using voltage sensors based on various physical principles was considered, as well as a brief historical background of the development of methods for determining the stresses of building structures of buildings and structures was presented. The results of experimental design of the voltage sensor housing made of polymer materials (epoxy resin) have been published. The requirements for the housing of a voltage sensor suitable for use in laboratory structures have been determined.

This publication discusses the design solution of the sensor housing made of duralumin alloy, a material that meets most of the developed requirements. Used Books:

1.     СП 14.13330.2018 Seismic building design code.

2.     Trekin N.N., Avdeev K.V., Shmakov S. D., Cherepanov A. V., Tuchin M. A., Chaganov A. B. Development of a sensor for determining stresses inside reinforced concrete structures. Part 1. Earthquake engineering. Constructions safety. 2023, no. 4, pp. 45–58. DOI: 10.37153/2618-9283-2023-4 [In Russian]

3.     СП 385.1325800.2018 Protection of buildings and structures against progressive collapse. Design code. Basic statements

4.     Mikhailov K.V., Dmitriev S.A. Theory of reinforced concrete [Teoriya zhelezobetona]. Moscow: Stroyizdat. 1971.185 p. [In Russian]

5.     Matkov N.G. Resistance of steel-polymer concrete structures and their joints. Resistance of steel-polymer concrete structures and their joints. Moscow: Voentehlit. 1999. 164 p. [In Russian]

6.     Matkov N.G., Baranov D.S. Study of the limit state of reinforced concrete elements on models with automatic recording of the complete compression diagram. VNIIS, Series “Construction and Architecture”. Moscow, 1984, Vol. 6 [In Russian]

7.     Markov N.G., Zhuk V.M., Samael O.Yu. Experimental determination of stresses in concrete and polymer concrete prisms and construction of actual compression diagrams with a descending section. Research on the construction of stress in concrete, testing of structures. Tallinn: Valgus. 1986, pp. 68–78. [In Russian]

8.     Zolotukhin Yu.D., Barbakadze V.Sh., Gerasimov I.D., Strabakhin N.I. Testing of structures. Minsk. Graduate School. 1992. 272 p.

9.     Copyright certificate No. SU 492728 A1. THE USSR. G01B 7/24 Magnetoelastic transducer: No. 1947411: declared 07/1973/17. Published 1975.11.25 / Bely M.I. Shpadi A.L., Mishin V.A.; applicant Ulyanovsk Polytechnic Institute. [In Russian]

10. Khalil Khanafer, Ali Al-Masri, Ibrahim Deiab, Kambiz Vafai. Thermal analysis of fused deposition modelingprocess based finite element method: Simulationand parametric study. An International Journal of Computation and Methodology. 2022, Volume 81, Issue 3–6. https://doi.org/10.1080/10407782.2022.2038972