Effects of Outlets on Cracking Risk and Integral Stability of Super-High Arch Dams
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 conditio...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2014-01-01
|
| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1155/2014/312827 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832545389619707904 |
|---|---|
| author | Peng Lin Hongyuan Liu Qingbin Li Hang Hu |
| author_facet | Peng Lin Hongyuan Liu Qingbin Li Hang Hu |
| author_sort | Peng Lin |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-a3448693613046679c12cf7036123725 |
| institution | Kabale University |
| issn | 2356-6140 1537-744X |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-a3448693613046679c12cf70361237252025-02-03T07:25:56ZengWileyThe Scientific World Journal2356-61401537-744X2014-01-01201410.1155/2014/312827312827Effects of Outlets on Cracking Risk and Integral Stability of Super-High Arch DamsPeng Lin0Hongyuan Liu1Qingbin Li2Hang Hu3State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, ChinaSchool of Engineering, The University of Tasmania, Hobart, AustraliaState Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, ChinaState Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, ChinaIn 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.http://dx.doi.org/10.1155/2014/312827 |
| spellingShingle | Peng Lin Hongyuan Liu Qingbin Li Hang Hu Effects of Outlets on Cracking Risk and Integral Stability of Super-High Arch Dams The Scientific World Journal |
| title | Effects of Outlets on Cracking Risk and Integral Stability of Super-High Arch Dams |
| title_full | Effects of Outlets on Cracking Risk and Integral Stability of Super-High Arch Dams |
| title_fullStr | Effects of Outlets on Cracking Risk and Integral Stability of Super-High Arch Dams |
| title_full_unstemmed | Effects of Outlets on Cracking Risk and Integral Stability of Super-High Arch Dams |
| title_short | Effects of Outlets on Cracking Risk and Integral Stability of Super-High Arch Dams |
| title_sort | effects of outlets on cracking risk and integral stability of super high arch dams |
| url | http://dx.doi.org/10.1155/2014/312827 |
| work_keys_str_mv | AT penglin effectsofoutletsoncrackingriskandintegralstabilityofsuperhigharchdams AT hongyuanliu effectsofoutletsoncrackingriskandintegralstabilityofsuperhigharchdams AT qingbinli effectsofoutletsoncrackingriskandintegralstabilityofsuperhigharchdams AT hanghu effectsofoutletsoncrackingriskandintegralstabilityofsuperhigharchdams |