应用ABAQUS程序进行节理岩质边坡稳定分析  

Stability analysis on jointed rock slope using ABAQUS program

作　　者：张晓咏[1] 戴自航[1] 

机构地区：[1]福州大学岩土工程研究所,福建福州350108

出　　处：《广西大学学报（自然科学版）》2009年第4期444-450,共7页Journal of Guangxi University（Natural Science Edition）

基　　金：国家自然科学基金资助项目(50678038);福建省高等学校新世纪优秀人才支持计划项目(TM2006-30)

摘　　要：利用ABAQUS有限元软件,按强度折减技术对一实际工程大型节理岩质边坡进行了稳定性分析。针对ABAQUS程序节理材料模型的定义过于简化,只能将岩体视为满布节理的材料,节理视为相互贯通且遍布于岩体中,而不能根据实际节理面间距或分布密度来定义节理的缺点,提出了将受节理面控制的岩体进行"砖块式"划分的方法以模拟实际的节理分布情况。实例的计算结果表明,采用ABAQUS程序的节理材料模型弱化了实际岩体的强度,得到的分析结果过于保守,而采用将岩体"砖块式"划分的分析方法更符合实际情况,计算的结果更为合理可靠。The finite element software ABAQUS was combined with strength reduction technique to analyze the stability of the large jointed rock slope of a practical engineering. Aiming at the definition of jointed material model is too simplified in ABAQUS, including that rock could only be regarded as ubiquitous-joint material, joints were regarded as interpenetration and spread all over rock, and joints could not be defined according to practical joint spacing or distribution density,＂ brick-style＂ method of division was put forwarded for rock material which is controlled by jointed planes to simulate practical joint distribution. The engineering example showed that the ABAQUS jointed ma- terial model underestimated the actual rock strength and the andlysis results were over-conservative, but using the ＂brick-style＂ method to divide rock tallied more with the actual situation, and the result was more reasonable and reliable.

关 键 词：ABAQUS程序 岩质边坡 稳定分析 有限元 强度折减技术 

分 类 号：TU45[建筑科学—岩土工程]