Hua Zhang

Dr. Hua Zhang


Research Focus & Metrics

Academic Career Length

3Years (2024-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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16 August 2024 in Buildings
Verified
Journal Article
Open access
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JLJing Lv
Jing Lv
HYHaozhong Yang
Haozhong Yang
XZXiaozhen Zhang
Xiaozhen Zhang
YWYuxin Wang
Yuxin Wang
HZHua Zhang
Hua Zhang
YZYifan Zhao
Yifan Zhao
A large amount of industrial heritage has been preserved owing to the wide recognition of its value as part of urban renewal and rural revitalization. Shaanxi’s industrial heritage is unique because of its rich historical resources. However, research on Shaanxi’s industrial heritage has been of point and piecemeal form rather than systematic. In this study, through the collection of historical data and study of the academic literature, we analyzed 385 industrial heritage sites in Shaanxi in time and space from 1840 to 1978 using a geographic information system (GIS) to reveal their evolution patterns. We comprehensively examined the influence of factors such as natural resources, traditional ancient industry inheritance, transportation conditions, and historical policies, and found that the distribution of industrial heritage in Shaanxi resulted from the interaction of these factors. We have constructed the first ever level categorized and quantified multilevel industrial heritage atlas of Shaanxi in the form of a Sankey diagram using GIS spatial maps, which provides a traceable historical record for each industrial heritage site. We not only reveal the spatial evolution law of industrial heritage in Shaanxi but also provide an overall view of the practice of industrial heritage protection and renewal, thus helping avoid the homogenization of future design. Our findings are also of academic and practical significance for the study and protection of industrial heritage.

8 February 2024 in Buildings
Verified
Journal Article
Open access
PDF file
HZHua Zhang
Hua Zhang
LZLu Zhao
Lu Zhao
Anbang LiAnbang Li
Anbang Li
SXShanhua Xu
Shanhua Xu
This paper presented the development process of a novel multi-layer self-centering damper utilizing a NiTi shape memory alloy (SMA) with remarkable superelastic properties. The construction and operating principles of the novel damping device were introduced. A model for calculating the restoring force–displacement hysteretic curve of the novel damper was established, and based on this theoretical model, a parameter analysis of the damper’s hysteresis performance was conducted. The effect of SMA pre-strain, SMA diameter, number of layers in the damper, and number of SMA wires per layer on the damper’s stiffness, the unit cycle energy dissipation, and the equivalent viscous damping ratio were investigated, respectively. The results showed that the restoring force–displacement hysteretic curve of the novel SMA damper exhibits a full spindle shape, demonstrating the damper’s excellent energy dissipation capacity, self-centering capability, significant stroke, and unique variable stiffness characteristics (i.e., appropriate initial stiffness, minimal isolation stiffness, and significant limit stiffness). The results also indicated that the SMA pre-strain has a minor impact on the damper’s stiffness but a significant influence on unit cyclic energy dissipation and equivalent damping ratio. As the SMA pre-strain increased from 0.03 to 0.04, 0.05, and 0.06, the maximum stroke of the damper continuously decreases, while the unit cyclic energy dissipation initially increases and then decreases, with the optimal energy dissipation achieved at a pre-strain of 0.04. Increasing the SMA diameter results in a higher damper stiffness and energy dissipation capacity, with no significant change in maximum stroke and equivalent damping ratio. Increasing the number of damper layers leads to an increase in maximum stroke and unit-cycle energy dissipation, accompanied by a decrease in stiffness and almost constant equivalent damping ratio. As the number of SMA wires per layer increased from 8 to 16 and 32, the maximum stroke and equivalent damping ratio presented little variation, but the damper’s stiffness and unit cyclic energy dissipation continuously increased.