一个可用于地震分析的界面力学模型
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摘要
首先简要介绍了层间界面在侧压力及反平面剪切载荷共同作用下 ,剪切破坏的剪切梁模型及其主要力学行为特性 ;在此基础上 ,分析了层间界面失稳阶段结构对外界的能量释放量 ,以及由于层间界面上“应力锁死”现象而产生的后续再加载过程中的载荷突变 ;最后讨论了上述力学现象的地震学意义 .
In this paper, the shear beam model for analysis of interface failure under joint action of anti plane shearing and lateral compression and its principal behavior were briefly introduced. The calculation of energy release that is related to the strength of earthquake was presented by using the shear beam model. The sudden increase of load resulted from the “stress locking” at the interface layer in the reloading process was investigated. At the end of the paper, discussions on the mechanism of earthquake were given out.
In this paper, the shear beam model for analysis of interface failure under joint action of anti plane shearing and lateral compression and its principal behavior were briefly introduced. The calculation of energy release that is related to the strength of earthquake was presented by using the shear beam model. The sudden increase of load resulted from the “stress locking” at the interface layer in the reloading process was investigated. At the end of the paper, discussions on the mechanism of earthquake were given out.
引文
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Hutchinson JW,Suo Z.1 991 .Mixed mode cracking of layered materials[A].In:Hutchinson W,Wu T Y eds.Adv
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Wang X C eds.Microstructuresand Mechanical Propertiesof N ew Engineering Materials[C].Beijing:International
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Shen X P,Mroz Z.2 0 0 0 .Analysis of progressive interface failure under cyclic loading[J].Adv in Struc Engng,4
(accepted)
Yang B,Ravi-Cander K.1 998.Anti-plane shear crack growth underquasi-static loading in a damaging material[J].Int
J Solids Struct,35(1 2 ) :3695～ 3 71 5
华安增 .1 989.岩石冲击及能量释放 [A].见 :孙钧 ,林韵梅主编 .岩石力学新进展 [C].沈阳 :东北工学院出版社 ,2 2 0～ 2 2 9
江在森 ,祝意青 ,王庆良 ,等 .1 998.永登 5.8级地震孕育发生过程中的断层形变与重力场动态图象特征 [J].地震学
报 ,2 0 (3) :2 64～ 2 71
焦明若 ,张国民 ,车时 ,等 .1 999.中国大陆及其周边地区构造应力场的数值计算及其在地震活动性解释上的应用 [J].
地震学报 ,2 1 (2 ) :1 2 3～ 1 32
宋治平 ,梅世蓉 ,尹祥础 .1 999.强大地震前地震活动增强区及其力学研究 [J].地震学报 ,2 1 (3) :2 71～ 2 77
殷有泉 .1 993.地震非稳定性 [A].见 :中国力学学会办公室编 .结构与材料的不稳定性 [C].北京 :科学出版社 ,1 74～
1 85
曾海容 ,宋惠珍 .1 999.利用三维有限单元格林函数反演 1 989年 Loma-Prieta地震的震源机制 [J].地震学报 ,2 1 (3) :
2 2 5～ 2 32
Hutchinson JW,Suo Z.1 991 .Mixed mode cracking of layered materials[A].In:Hutchinson W,Wu T Y eds.Adv
Appl Mech,2 9[C].New York:Academic Press,63～ 1 91
Jorzebowski A,Mroz Z.1 994 .On slip and memory rules in elastic,friction contactproblems [J].Acta Mech,1 0 2 (1 ) :
1 1 9～ 2 1 6
Mroz Z,Shen X P.1 999.Analysisof progressive interfacefailure undermonotonic loading[A].In:Xu B Y,Tokuda M,
Wang X C eds.Microstructuresand Mechanical Propertiesof N ew Engineering Materials[C].Beijing:International
Academic Publisher,1 0 9～ 1 1 4
Shen X P,Mroz Z.2 0 0 0 .Analysis of progressive interface failure under cyclic loading[J].Adv in Struc Engng,4
(accepted)
Yang B,Ravi-Cander K.1 998.Anti-plane shear crack growth underquasi-static loading in a damaging material[J].Int
J Solids Struct,35(1 2 ) :3695～ 3 71 5
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