Zobrazeno 1 - 10
of 2 931
pro vyhledávání: '"arch dam"'
Arch dam point cloud segmentation based on deep feature learning and normal vector data optimization
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-19 (2024)
Abstract Separating the dam body, spillway, and other structures from the point cloud in the dam area is an important step in dam deformation monitoring. Manual segmentation is time consuming and inaccurate. This study proposes a point cloud segmenta
Externí odkaz:
https://doaj.org/article/93414ab7bf3c44c59e9693b96b31dec0
Publikováno v:
Water Science and Engineering, Vol 17, Iss 2, Pp 177-186 (2024)
Currently, more than ten ultrahigh arch dams have been constructed or are being constructed in China. Safety control is essential to long-term operation of these dams. This study employed the flexibility coefficient and plastic complementary energy n
Externí odkaz:
https://doaj.org/article/7918b90648364046a6a975cf3e7cbcf1
Autor:
Yifan Wang, Xuejuan Tang, Yaosheng Tan, Mengxia Zhou, Jianshu Ouyang, Xuecong Liu, Chao Shang
Publikováno v:
Case Studies in Construction Materials, Vol 20, Iss , Pp e02845- (2024)
Baihetan Arch Dam is the world's first 300 m grade ultra-high arch dam using low-heat cement concrete. The hydration characteristics of low-heat cement concrete, especially the effect of temperature rise after arch closure on the temperature field an
Externí odkaz:
https://doaj.org/article/0c009ba79c254e12ab8dc5d318f77d44
Publikováno v:
Journal of Hydroinformatics, Vol 26, Iss 1, Pp 33-50 (2024)
Different scenarios of an arch-dam breach and their impact on the time-space evolution of flood waves are analysed using numerical modelling. As the accidents involving this type of dam are among the most catastrophic ones, the 108 m in height Paltin
Externí odkaz:
https://doaj.org/article/075ee19bcfbe4c5589a1be106584c031
Publikováno v:
Water Science and Engineering, Vol 16, Iss 4, Pp 408-418 (2023)
The material mechanical parameters of the dam body and foundation will change when a dam is reinforced during the aging process. This causes significant changes in the structural state of the project and makes it difficult to ensure its structural sa
Externí odkaz:
https://doaj.org/article/ed5f995551d040ea96e31d0e05de1490
Autor:
Bo Xu, Junyi Lu, Shaowei Wang, Xudong Chen, Xiangnan Qin, Jingwu Bu, Jianchun Qiu, Linsong Sun, Yangtao Li
Publikováno v:
Applied Sciences, Vol 14, Iss 19, p 8921 (2024)
Optimal sensor placement (OSP) for arch dams is important to ensure their long-term service, but the evolution of structural states and material properties is less considered at present. This paper considers the effects of cracks, contraction joints,
Externí odkaz:
https://doaj.org/article/b6e06ac6afd24bc688466445ff3dbbf5
Autor:
Zhongwen Shi, Jun Li, Yanbo Wang, Chongshi Gu, Hailei Jia, Ningyuan Xu, Junjie Zhai, Wenming Pan
Publikováno v:
Mathematics, Vol 12, Iss 19, p 3110 (2024)
Deformation is the most direct indicator of structural state changes in arch dams. Therefore, numerous deformation monitoring points are typically arranged on arch dams to obtain deformation data from each point. Considering the complex relationships
Externí odkaz:
https://doaj.org/article/c7c832b60a634ca6a5e659a2eac1a174
Publikováno v:
Water, Vol 16, Iss 18, p 2694 (2024)
Valley shrink deformation is a common physical and mechanical phenomenon during the reservoir operation of high arch dams. This phenomenon is particularly significant in the initial stages of impoundment and can severely impact the operational safety
Externí odkaz:
https://doaj.org/article/e322a97cf2514afabde04d94059c86d3
Autor:
Noemi Schclar Leitão, Sérgio Oliveira
Publikováno v:
Thermo, Vol 3, Iss 4, Pp 605-624 (2023)
In order to conduct thermal analysis of concrete dams, it is necessary to assess and validate the spatiotemporal representations used for modeling the solar radiation and the water temperature boundary conditions. To illustrate this procedure, the th
Externí odkaz:
https://doaj.org/article/74a7f155efa543e2add9824520975990
Deformation critical threshold estimation of Xiaowan ultrahigh arch dam with time-varying grey model
Publikováno v:
Water Science and Engineering, Vol 16, Iss 3, Pp 302-312 (2023)
The structural behavior of the Xiaowan ultrahigh arch dam is primarily influenced by external loads and time-varying characteristics of dam concrete and foundation rock mass during long-term operation. According to overload testing with a geological
Externí odkaz:
https://doaj.org/article/d8da2b7b249d4738b9ef9ff563537fb0