Liquefaction evaluation of dam foundation soils considering overlying structure
The liquefaction analysis procedure conducted at a dam foundation associated with a layer of liquefiable sand is presented. In this case, the effects of the overlying dam and an embedded diaphragm wall on liquefaction potential of foundation soils are considered. The analysis follows the stress-base...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2015-04-01
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| Series: | Journal of Rock Mechanics and Geotechnical Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1674775515000219 |
| _version_ | 1811271055090647040 |
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| author | Gang Wang Xing Wei Hanlong Liu |
| author_facet | Gang Wang Xing Wei Hanlong Liu |
| author_sort | Gang Wang |
| collection | DOAJ |
| description | The liquefaction analysis procedure conducted at a dam foundation associated with a layer of liquefiable sand is presented. In this case, the effects of the overlying dam and an embedded diaphragm wall on liquefaction potential of foundation soils are considered. The analysis follows the stress-based approach which compares the earthquake-induced cyclic stresses with the cyclic resistance of the soil, and the cyclic resistance of the sand under complex stress condition is the key issue. Comprehensive laboratory monotonic and cyclic triaxial tests are conducted to evaluate the static characteristics, dynamic characteristics and the cyclic resistance against liquefaction of the foundation soils. The distribution of the factor of safety considering liquefaction is given. It is found that the zones beneath the dam edges and near the upstream of the diaphragm wall are more susceptible to liquefaction than in free field, whereas the zone beneath the center of the dam is less susceptible to liquefaction than in free field. According to the results, the strategies of ground improvement are proposed to mitigate the liquefaction hazards. |
| first_indexed | 2024-04-12T22:13:27Z |
| format | Article |
| id | doaj.art-bf2bb8b9357d41739c39c5218dcf05c4 |
| institution | Directory Open Access Journal |
| issn | 1674-7755 |
| language | English |
| last_indexed | 2024-04-12T22:13:27Z |
| publishDate | 2015-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Rock Mechanics and Geotechnical Engineering |
| spelling | doaj.art-bf2bb8b9357d41739c39c5218dcf05c42022-12-22T03:14:39ZengElsevierJournal of Rock Mechanics and Geotechnical Engineering1674-77552015-04-017222623210.1016/j.jrmge.2015.02.005Liquefaction evaluation of dam foundation soils considering overlying structureGang Wang0Xing Wei1Hanlong Liu2School of Civil Engineering, Chongqing University, Chongqing 400044, ChinaSchool of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, ChinaSchool of Civil Engineering, Chongqing University, Chongqing 400044, ChinaThe liquefaction analysis procedure conducted at a dam foundation associated with a layer of liquefiable sand is presented. In this case, the effects of the overlying dam and an embedded diaphragm wall on liquefaction potential of foundation soils are considered. The analysis follows the stress-based approach which compares the earthquake-induced cyclic stresses with the cyclic resistance of the soil, and the cyclic resistance of the sand under complex stress condition is the key issue. Comprehensive laboratory monotonic and cyclic triaxial tests are conducted to evaluate the static characteristics, dynamic characteristics and the cyclic resistance against liquefaction of the foundation soils. The distribution of the factor of safety considering liquefaction is given. It is found that the zones beneath the dam edges and near the upstream of the diaphragm wall are more susceptible to liquefaction than in free field, whereas the zone beneath the center of the dam is less susceptible to liquefaction than in free field. According to the results, the strategies of ground improvement are proposed to mitigate the liquefaction hazards.http://www.sciencedirect.com/science/article/pii/S1674775515000219LiquefactionOverlying structureDamStone columns |
| spellingShingle | Gang Wang Xing Wei Hanlong Liu Liquefaction evaluation of dam foundation soils considering overlying structure Journal of Rock Mechanics and Geotechnical Engineering Liquefaction Overlying structure Dam Stone columns |
| title | Liquefaction evaluation of dam foundation soils considering overlying structure |
| title_full | Liquefaction evaluation of dam foundation soils considering overlying structure |
| title_fullStr | Liquefaction evaluation of dam foundation soils considering overlying structure |
| title_full_unstemmed | Liquefaction evaluation of dam foundation soils considering overlying structure |
| title_short | Liquefaction evaluation of dam foundation soils considering overlying structure |
| title_sort | liquefaction evaluation of dam foundation soils considering overlying structure |
| topic | Liquefaction Overlying structure Dam Stone columns |
| url | http://www.sciencedirect.com/science/article/pii/S1674775515000219 |
| work_keys_str_mv | AT gangwang liquefactionevaluationofdamfoundationsoilsconsideringoverlyingstructure AT xingwei liquefactionevaluationofdamfoundationsoilsconsideringoverlyingstructure AT hanlongliu liquefactionevaluationofdamfoundationsoilsconsideringoverlyingstructure |