Optimization of the Structural Parameters of the Vertical Trabeculae Beetle Elytron Plate Based on the Mechanical and Th
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pISSN 1226-7988, eISSN 1976-3808 www.springer.com/12205
DOI 10.1007/s12205-020-2334-x
Structural Engineering
Optimization of the Structural Parameters of the Vertical Trabeculae Beetle Elytron Plate Based on the Mechanical and Thermal Insulation Properties Zhijie Zhang
a
, Elbashiry Mohamed Adam Elsafia, Jinxiang Chen
a
, Peixing Weib, and Yaqin Fuc
a
Key Laboratory of Concrete and Prestressed Concrete Structures of the Ministry of Education, Southeast University, Nanjing 210096, China School of Landscape Architecture, Jiangsu Vocational College of Agriculture and Forestry, Jurong 212400, China c College of Materials and Textiles, Zhejiang Sci-Tech University, Hangzhou, Zhejiang, Hangzhou 310018, China b
ARTICLE HISTORY
ABSTRACT
Received 18 December 2019 Revised 8 May 2020 Revised 28 June 2020 Accepted 9 July 2020 Published Online 17 September 2020
According to the excellent structure of the beetle elytron plate (BEP), a new type of bionic prefabricated wallboard with vertical trabeculae and honeycomb walls (the vertical trabeculae beetle elytron plate: VBEPsc) was proposed. The relationships between the main structural parameters, including the concrete frame thickness (T), honeycomb wall thickness (t), trabecula number (N) and trabecular radius (R), and the performance of the VBEPsc were analyzed. In addition, to improve the mechanical and insulation performance of the VBEPsc, an initial optimal design was determined. The results showed that 1) in addition to the mechanical properties of the VBEPsc being mainly affected by T, as is known, N had an apparent impact on the stiffness of the VBEPsc; the insulation performance was affected greatly by T, N, and t. 2) Under the given conditions, the mechanical properties of the optimized VBEPsc met the requirements for bearing capacities and serviceability; The insulation performance of the optimized VBEPsc met the requirements for self-insulating walls of category II buildings in areas that are cold in winter and hot in summer. In addition, a double-layer mold and complete production technology for VBEPsc were proposed. These works started a discussion for the application of such prefabricated wallboards.
KEYWORDS Vertical trabeculae beetle elytron plate Novel wallboard Bionic structure Green construction materials Optimization
1. Introduction In the process of construction industrialization, as important components of prefabricated buildings, the mechanical and thermal insulation performance of new-type, green and environmental protection prefabricated wallboards has become a current research topic. Yu et al. (2018) studied the effects of rice husk fiber and binding material contents on the performance of wallboard. Liu et al. (2018) explored the punching performance of recycled aggregate concrete thin wallboard with single-layer reinforcement. Zhang et al. (2019) proposed straw sandwich concrete prefabricated wallboard (SCBEP) and optimized the structural parameters to improve its mechanical and thermal insulation properties. Wu and Dare (2004, 2006) ex
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