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Jianxin He,Jiannan Lu,Liang Liu,Wu Yang,Haihua Yang,Pengpeng Chen,Xinyu Ding 대한토목학회 2024 KSCE Journal of Civil Engineering Vol.28 No.8
The primary contribution of this paper is to identify the optimal cross-section size and span diameter for large-grained hydraulic asphalt concrete materials in trabecular bending tests. First, three-point bending tests were conducted on asphalt concrete with maximum aggregate sizes of 19 mm (Dmax = 19 mm), 26.5 mm, and 31.5 mm, using six distinct cross-section sizes and span diameters. These experiments served to analyze the influence of varying cross-section sizes and span diameters on the mechanical properties of the materials. Secondly, the Image-Pro Plus (IPP) software was utilized to analyze and confirm the cross-sectional areas of the chosen samples. Then, by considering the optimal cross-section size and span diameter, the impact of temperature on the flexural characteristics of asphalt concrete with a maximum aggregate size of 31.5 mm was explored. This investigation enabled the proposal of a temperature cut-off interval governing the transformation of large-grained asphalt concrete from brittle to plastic damage. The validity of the experimental data was substantiated through image analysis, providing a benchmark for the testing methodology of the flexural performance of large-grained hydraulic asphalt concrete aggregate.
Development and Practice of Performance-Based Seismic Design of High-Rise Buildings in China
Xiao Congzhen,Li Jianhui,Li Yinbin,Qiao Baojuan,Sun Chao,Wei Yue,Ding Jiannan Council on Tall Building and Urban Habitat Korea 2023 International journal of high-rise buildings Vol.12 No.3
Seismic performance-based design methods are widely used in the field of engineering. This paper introduces the current status of seismic performance-based design methods for high-rise buildings in China, and summarizes latest advancements in seismic performance-based design methods for high-rise buildings in China, with a focus on the design methods based on predetermined yield mode and the design methods based on member ductility requirements. Finally, the development direction of seismic performance-based design method for high-rise buildings is prospected.