Published since 1923
DOI: 10.33622/0869-7019
Russian Science Citation Index (RSCI) Web of Science
  • Method Of Control Tests For Valve Couplings Simulating Seismic Loads
  • UDC 693.554:621.791.052.3:699.841 DOI: 10.33622/0869-7019.2021.06.25-31
    Viktor A. RAKHMANOV, e-mail:
    Aleksandr A. SAFONOV
    Institut VNIIzhelezobeton, ul. Plekhanova, 7, Moscow 111141, Russian Federation
    Abstract. The materials of studies of the coupling joints of reinforcement performed at the Institute of Vniizhelezobeton according to the method of low-cycle loading in accordance with the requirements of the State Standard "Mechanical reinforcement joints for reinforced concrete structures. Test methods" are presented. The tests were carried out on modern equipment from SCHENCK (Germany) and MTS (USA), which ensures compliance with all the requirements of the standard for research methods, as well as computer measurements and processing of the results. It is established that the pressed coupling joints have a number of disadvantages associated with their assembly, control over the location of the connected rods, the compression force and the accuracy of the geometric dimensions of the couplings. This limits the possibility of their use for buildings and structures that perceive seismic loads without conducting control tests for low-cycle endurance under variable tension-compression with a high level of elastic-plastic loading. The fallacy of the requirements for a number of indicators of the normative document establishing technical requirements for mechanical joints of reinforcement for reinforced concrete structures is revealed, and the need for its improvement is justified.
    Key words: test procedure, seismic impacts, coupling joints, low-cycle loading, reinforcement.
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  • For citation: Rakhmanov V. A., Safonov A. A. Method of Control Tests for Valve Couplings Simulating Seismic Loads. Promyshlennoe i grazhdanskoe stroitel'stvo [Industrial and Civil Engineering], 2021, no. 6, pp. 25-31. (In Russian). DOI: 10.33622/0869-7019.2021.06.25-31.