eCite Digital Repository
Effects of outlets on cracking risk and integral stability of super-high arch dams
Citation
Lin, P and Liu, H and Li, Q and Hu, H, Effects of outlets on cracking risk and integral stability of super-high arch dams, The Scientific World Journal, 2014 Article 312827. ISSN 1537-744X (2014) [Refereed Article]
![]() | PDF 5Mb |
Copyright Statement
Licensed under Creative Commons Attribution 3.0 Unported (CC BY 3.0) http://creativecommons.org/licenses/by/3.0/
Abstract
In this paper, case study on outlet cracking is first conducted for the Goupitan and Xiaowan arch dams. A nonlinear FEM method
is then implemented to study effects of the outlets on integral stability of the Xiluodu arch dam under two loading conditions,
i.e., normal loading and overloading conditions. On the basis of the case study and the numerical modelling, the outlet cracking
mechanism, risk, and corresponding reinforcement measures are discussed. Furthermore, the numerical simulation reveals that
(1) under the normal loading conditions, the optimal distribution of the outlets will contribute to the tensile stress release in the
local zone of the dam stream surface and decrease the outlet cracking risk during the operation period. (2) Under the overloading
conditions, the cracks initiate around the outlets, then propagate along the horizontal direction, and finally coalesce with those
in adjacent outlets, where the yield zone of the dam has a shape of butterfly. Throughout this study, a dam outlet cracking risk
control and reinforcement principle is proposed to optimize the outlet design, select the appropriate concrete material, strengthen
the temperature control during construction period, design reasonable impounding scheme, and repair the cracks according to
their classification.
Item Details
Item Type: | Refereed Article |
---|---|
Keywords: | super-high arch dam, dam instability, outlet cracking, concrete structure |
Research Division: | Engineering |
Research Group: | Resources engineering and extractive metallurgy |
Research Field: | Geomechanics and resources geotechnical engineering |
Objective Division: | Construction |
Objective Group: | Construction processes |
Objective Field: | Civil construction processes |
UTAS Author: | Liu, H (Dr Hong Liu) |
ID Code: | 93308 |
Year Published: | 2014 |
Web of Science® Times Cited: | 6 |
Deposited By: | Engineering |
Deposited On: | 2014-07-25 |
Last Modified: | 2017-11-03 |
Downloads: | 390 View Download Statistics |
Repository Staff Only: item control page