隧道岩体稳定性的非线性单元安全系数分析
Hits:
Release time:2020-08-09 Journal:中南大学学报(自然科学版) Place of Publication:中国 Key Words:隧道; 岩体; 稳定性; 单元安全系数; 非线性 Abstract:为了采用非线性准则(巴顿准则)定量描述隧道岩体的稳定性,首先通过理论分析,推导巴顿非线性准则和摩尔库仑线性准则之间的关系,得到采用巴顿准则参数节理粗糙系数JRC和岩体压缩强度JCS表征的岩体剪切强度参数黏结力c,内摩擦角φ和巴顿准则参数表征的单元安全系数Ke;然后,利用有限差分软件FLAC3D建立隧道开挖计算模型,基于其内置的FISH语言,编制巴顿准则下非线性单元安全系数Ke计算程序,并对比Ke≤1的区域和FLAC3D塑性区分布.研究结果表明:Ke≤1对应的区域和由FLAC3D计算得到的塑性区域大致相同,从而验证了所推导的基于巴顿准则参数的单元安全系数公式的正确性以及所编制程序的可行性;单元安全系数Ke能够表征各个单元的破坏程度,优于塑性区判定标准. Co-author:柳群义 First Author:喻言 Indexed by:Applied Research Correspondence Author:冯德山 Document Code:1672-7207(2010)03-1085-03 Discipline:土木工程 Document Type:J Volume:41 Issue:3 Page Number:1085-1089 ISSN No.:1672-7207 Translation or Not:no CN No.:43-1426/N Date of Publication:2010-06-26 Included Journals:EI -
|
 Zip Code:c576f0c85848a14d10428d1b79269fc7d68bde9ba6ecb95648b168a03671c3821c778c2bedf0cae5d03c95a065c3a5efa4243241acb9eb6089885db6f9f3fa7f5b7491eb5af48e7ab43d253e29e0fa6991b0af260ac98903cc7fbca150cb2fc86cb6bd41d95f78a263ba3d6f6aa504ee56cdd8693f2e6f13b576940cee3633de Fax:17e6c064ee5cb174c4e944a660b3f619e9f93b408e0b240bede9c3e19ecc6800e4984f519ecfa91ba7ae06ae3e4625e03227d05cc2002730892a846aa57724d5726b7e7fb08181480e647262115fb634c6f5545aacd74cff5c45368c07d0490d7716bdcb5446496de61a5a7d10de5694997f1bfa8ba6d200f4ccaeebd9c2fed0 Postal Address:71db3ba9b84fb74a51e15316e4d4d5158f917d9d8fb5faf012f84ab1172b26e0f5c378c5cecdf29537ce2e6e402924d646da474ef15c20b32a3bd5b6bc9c7bd827f454623be9d12b5256f6321a92104010a6def1c290e33f0d28cb4f37613a9225795c4442d6b34af06bd692cac4ab416f451ae02c3f9b5ffa4b7b654b4a5c82 Office Phone:17e6c064ee5cb174c4e944a660b3f619e9f93b408e0b240bede9c3e19ecc6800e4984f519ecfa91ba7ae06ae3e4625e03227d05cc2002730892a846aa57724d5726b7e7fb08181480e647262115fb634c6f5545aacd74cff5c45368c07d0490d7716bdcb5446496de61a5a7d10de5694997f1bfa8ba6d200f4ccaeebd9c2fed0 Mobile:5137d55315e3e35e4f835eb43d34a4aa36b1b453d3da1bb8194ee0525d17fd8ebb55be93064fddd451e8daaed692f6a07972105dcad24687d241e73e52fc23bfeaa9ae244a27b9bbbf3bc7746d1ebf576a528b5fd3ab2e715ccd88d1cee492655bae47acb16b70d23c481ee1f499873c9165a8278a451959797a05929c450c7c Email:b679856bb3c424c1b1f7ff32fc78c0465f82c20323019d2bcbaf0fd567213eff4f807ae6c53d852fff6b4557cf7dcfb6d93900b2fbb86f99bad419376cc49941a87bc49d00f086bfbf95d3a9f2040f260a5dea2e34b25479a54e2d46c07826eed4d04d17b119265ef06d58cb47f1322d0f7ab5847b2d282fa530dd5e5d029335
|
MOBILE Version