Study of Strain-Stress Behavior of Non-Pressure Reinforced Concrete Pipes Used in Road Building

International Conference on Construction, Architecture and Technosphere Safety 2017

土木建筑工程

Rakitin, B.A.^1 ; Pogorelov, S.N.^1 ; Kolmogorova, A.O.^1

Institute of Architecture and Construction, South Ural State University, Lenin Avenue, 76, Chelyabinsk

454080, Russia^1

关键词: Active resistance;    Full scale tests;    High frequency HF;    Large diameter;    Metal consumption;    Stress behavior;    Underground pipeline;    Vertical vibrations;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/262/1/012038/pdf
DOI  :  10.1088/1757-899X/262/1/012038

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

The article contains the results of the full-scale tests performed for special road products - large-diameter non-pressure concrete pipes reinforced with a single space cylindrical frame manufactured with the technology of high-frequency vertical vibration molding with an immediate demolding. The authors studied the change in the strain-stress behavior of reinforced concrete pipes for underground pipeline laying depending on their laying depth in the trench and the transport load considering the properties of the surrounding ground mass. The strain-stress behavior of the reinforced concrete pipes was evaluated using the strain-gauge method based on the application of active resistance strain gauges. Based on the completed research, the authors made a conclusion on the applicability of a single space frame for reinforcement of large-diameter non-pressure concrete pipes instead of a double frame which allows one to significantly reduce the metal consumption for the production of one item. As a result of the full-scale tests of reinforced concrete pipes manufactured by vertical vibration molding, the authors obtained new data on the deformation of a pipeline cross-section depending on the placement of the transport load with regard to the axis.