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研究生:陳志民
研究生(外文):Chen, Zhi-Min
論文名稱:節理形態對岩體強度與變形性影響之分析
論文名稱(外文):The Effect of Joint Configuration on Strength and Deformability of Jointed Rock Mass
指導教授:楊長義楊長義引用關係
指導教授(外文):Yang, Zhang-Yi
學位類別:碩士
校院名稱:淡江大學
系所名稱:土木工程研究所
學門:工程學門
學類:土木工程學類
論文種類:學術論文
論文出版年:1997
畢業學年度:85
語文別:中文
論文頁數:126
中文關鍵詞:節理形態岩橋岩體峰後行為土木工程工程
外文關鍵詞:joint configurationrock bridgejointed rock masspost-peak behaviorCIVIL-ENGINEERINGENGINEERING
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The strength and deformability of jointed masses are
primarily dominated by the joint configuration, such as dip
angle, spacing, persistence, and sets of joints. This paper aim
at the post-peak behavior of jointed masses affected by the
fracture of rock bridge and sliding of joints. First, the model
proposed by Shen and Stephansson is extended to suit for the
mass with various persistence during destroy of rock bridge.
Secondly, the analysis on the post-peak behavior of three-
dimensional masses by 3DEC is also discussed. Some
conclusions are drawn as follows. (1) Mathematical model : The
post-peak behavior of jointed masses is strongly dependent on
dip angle and persistence of joints. It also affected by the
shape and size of jointed masses. The existence of rock bridge
can strengthen the deformation modulus, but the relatively
distributed position of rock bridge is negligible. The scale
effect of joint number on deformability vanishes rapidly on the
case of mass with continuous joints. (2) 3DEC : The anisotropy
of mass strength is deduced as the confining pressure
increasing. The post-peak behavior of masses is more ductile
while the dip angle and the thickness increases. The strength of
masses is independent of the stiffness of joints. The mechanical
behavior of masses with multiple sets of joint is predominated
by the dipper and weaker one. The effect of strike of joints is
observed under the true triaxial stress condition. The post-peak
behavior of jointed mass is independent of the intermediate
stress.
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