Zhen Huang , Yuzhu Zhou , Ziming Xiong , Hao Lu , Minqian Sun , Maojiang Qin
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引用次数: 0
Abstract
As the weak part of the assembled frame tunnel, the response evaluation of the middle partition wall under explosion load has attracted much attention. This study focuses on the dynamic response, post-disaster assessment, and damage prediction of the middle partition wall with different joint types (steel box joint, mortise-and-tenon joint, sleeve joint) in the prefabricated frame tunnel under blast load. Utilizing the CONWEP explosion load algorithm, three-dimensional refined models of the joints were established to analyze the failure modes and dynamic response characteristics of the middle partition wall subjected to explosive loads. The damage level of the middle partition wall was predicted by employing the deflection-span ratio damage assessment criterion and machine learning. The results show that the middle partition walls are damaged by a combination of bending and shear under explosive loads. The stiffness of the steel box type middle partition wall is the highest, and the damage at the structural joint is the least. When the explosive equivalent is less than 150 kg or the detonation distance is greater than 3 m, the displacement changes and explosion resistance of the three types of middle partition walls are equivalent. When the equivalent reaches 454 kg or the detonation distance is less than 3 m, the blast resistance and stability of the steel box type middle partition wall surpass those of the other types of middle partition walls. The probability of serious damage and collapse failure of the steel box type middle partition wall is less than that of the other two types of partition walls. In the case of low explosion intensity, the blast resistance of the middle walls of the three types of joints is equivalent.
期刊介绍:
Engineering Science and Technology, an International Journal (JESTECH) (formerly Technology), a peer-reviewed quarterly engineering journal, publishes both theoretical and experimental high quality papers of permanent interest, not previously published in journals, in the field of engineering and applied science which aims to promote the theory and practice of technology and engineering. In addition to peer-reviewed original research papers, the Editorial Board welcomes original research reports, state-of-the-art reviews and communications in the broadly defined field of engineering science and technology.
The scope of JESTECH includes a wide spectrum of subjects including:
-Electrical/Electronics and Computer Engineering (Biomedical Engineering and Instrumentation; Coding, Cryptography, and Information Protection; Communications, Networks, Mobile Computing and Distributed Systems; Compilers and Operating Systems; Computer Architecture, Parallel Processing, and Dependability; Computer Vision and Robotics; Control Theory; Electromagnetic Waves, Microwave Techniques and Antennas; Embedded Systems; Integrated Circuits, VLSI Design, Testing, and CAD; Microelectromechanical Systems; Microelectronics, and Electronic Devices and Circuits; Power, Energy and Energy Conversion Systems; Signal, Image, and Speech Processing)
-Mechanical and Civil Engineering (Automotive Technologies; Biomechanics; Construction Materials; Design and Manufacturing; Dynamics and Control; Energy Generation, Utilization, Conversion, and Storage; Fluid Mechanics and Hydraulics; Heat and Mass Transfer; Micro-Nano Sciences; Renewable and Sustainable Energy Technologies; Robotics and Mechatronics; Solid Mechanics and Structure; Thermal Sciences)
-Metallurgical and Materials Engineering (Advanced Materials Science; Biomaterials; Ceramic and Inorgnanic Materials; Electronic-Magnetic Materials; Energy and Environment; Materials Characterizastion; Metallurgy; Polymers and Nanocomposites)