|
|||||
|
|
| 岩溶区桩端下伏溶洞顶板稳定性分析研究 | |
| 引用本文： | 赵明华,张锐,胡柏学,袁铜森.岩溶区桩端下伏溶洞顶板稳定性分析研究[J].公路交通科技,2009,26(9). |
| 作者姓名： | 赵明华 张锐 胡柏学 袁铜森 |
| 作者单位： | 1. 湖南大学,岩土工程研究所,湖南,长沙,410082 2. 湖南省交通科学研究院,湖南,长沙,410015;长沙理工大学,湖南,长沙,410015 3. 湖南省交通科学研究院,湖南,长沙,410015 |
| 基金项目： | 国家自然科学基金资助项目 |
| 摘 要： | 在总结归纳岩溶区溶洞项板稳定性分析方法的基础上,针对目前桩端下伏溶洞顶板稳定性验算方法中存在的问题进行相应改进,在溶洞顶板抗冲切、抗剪验算中分别引入格里菲斯判据和莫尔判据,对抗剪验算全面考虑了桩端岩层剪切破坏和溶洞平面投影边缘处岩层剪切破坏2种破坏模式,对完整、无裂隙顶板采用圆形固支板模型验算抗弯稳定性,最后将该方法应用到桌公路大桥的溶洞顶板稳定性验算中,计算结果表明该方法简单、实用. |
| 关 键 词： | 道路工程 岩溶 岩石破坏判据 顶板稳定性 破坏模式 |
Analysis of Stability of Cave Roof under Pile Tip in Karst Area |
|
| ZHAO Minghua,ZHANG Rui,HU Boxue,YUAN Tongsen.Analysis of Stability of Cave Roof under Pile Tip in Karst Area[J].Journal of Highway and Transportation Research and Development,2009,26(9). | |
| Authors: | ZHAO Minghua ZHANG Rui HU Boxue YUAN Tongsen |
| Institution: | 1.Geotechnical Engineering Institute;Hunan University;Changsha Hunan 410082;China;2.Hunan Communications Science Research Institute;Changsha Hunan 410015;3.Changsha University of Science and Technology;China |
| Abstract: | Based on the summary of analysis methods on cave roof stability in karst area,some aspects of the existing methods on checking computation of cave roof stability under pile tip were improved.Griffith criterion and Mohr criterion were introduced into checking computations of anti-punch-shearing and anti-shearing capacities of cave roof respectively.The terrane shearing failure under pile tip and that around the planar projection edge of cave were considered comprehensively in checking computations of anti-sh... |
| Keywords: | road engineering karst rock failure criterion cave roof stability failure mode |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |