Stability analysis of subgrade cave roofs in karst region |
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| Authors: | JIANG Chong ZHAO Ming- hua CAO Wen-gui |
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| Affiliation: | 1. Geotechnical Engineering Institute;Hunan University;Changsha 410082;China;2. School of Resources and Safety Engineering;Central South University;Changsha 410083;China |
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| Abstract: | According to the engineering features of subgrade cave roof in karst region, the clamped beam model of subgrade cave roof in karst region was set up. Based on the catastrophe theory, the cusp catastrophe model for bearing capacity of subgrade cave roof and safe thickness of subgrade cave roof in karst region was established. The necessary instability conditions of subgrade cave roof were deduced, and then the methods to determine safe thickness of cave roofs under piles and bearing capacity of subgrade cave... |
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| Keywords: | pile foundation karst subgrade cave roof cusp catastrophe model stability |
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