- DEPARTMENT "TESTING STRUCTURES" of NRU MGSU - 60 YEARS
- Evaluation Of The Compliance Of Prefabricated Reinforced Concrete Elements Joints
- UDC 69.057.12-413
doi: 10.33622/0869-7019.2023.03.30-35
Aleksander N. SHUVALOV, ashuvalov@mgsu.ru
Mikhail G. KOVALEV, kovalevmg@mgsu.ru
Valentin A. ERMAKOV, ermakov@mgsu.ru
Moscow State University of Civil Engineering (National Research University), Yaroslavskoe shosse, 26, Moscow 129337, Russian Federation
Abstract. A new stage in the development of large-panel housing construction, which makes it possible to build economical housing in short terms, is accompanied by the use of innovative design and technological solutions. For high-quality design of panel buildings, reliable initial strength and deformation characteristics are required, including the ductility of the joints of prefabricated reinforced concrete elements in the entire range of loading up to the limit value of shear forces. Full-scale tests of eight series of samples of vertical joints were carried out, in which the class of concrete, the thickness of the panels, the number and relative position of the mating elements varied. As a result of the tests, characteristic graphs of the dependences of displacements on the load of one of the joint elements relative to the other were obtained. For each sample, three compliance coefficients were determined at the intervals: from the beginning of loading to the formation of cracks, from the beginning of loading to the moment of application of the maximum load, and from the moment of formation of a crack to the application of the maximum load. In addition, dependences of joint compliance coefficients on the class of concrete, joint type, number and thickness of elements in it were obtained, which can be used as initial data in the calculations of multi-storey panel buildings.
Keywords: panel construction, joints of reinforced concrete panels, concrete grade, testing of reinforced concrete structures, displacements, compliance, crack formation - REFERENCES
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