简介：

简介：TheTianqiaogou-Huangyangchuanfaultlieseastofthemainpeak,LenglonglingMount,intheeastpartoftheQilianMountainsandisoneofthemajoractivefaultsontheeasternsectionoftheQilianMountains.ThefaultisseparatedintotwosegmentsatGuanjiataivillage,theeasternandwesternsegments,andhasundergoneobviousmovementsincetheHolocene.Sixtrencheswereexcavatedtostudythepaleoseismicactivityalongthefault.Integratedandcomparativeanalysisofsedimentsinthetrenchesreveals7paleoseismiceventsandahistoricearthquakeonthefaultsincetheHolocene.Theiragesare:eventⅠis(10743±343)aBP,eventⅡ(9038±39)aBP,eventⅢ(7050±577)aBP,eventⅣ(4847±185)aBP,eventⅤ(3562±190)aBP,eventⅥ(2476±194)aBP,andeventⅦ(1505±253),respectively,andeventⅧisthe1927GulangMs8.0earthquake.Itindicatesthatthefaultmighthavecontributedtothe1927GulangMs8.0earthquake.Thetemporalandspatialdistributionofthepaleoseismiceventsisrelativelyuniformandischaracterizedapproximatelybyaquasiperiodicrecurrence.

简介：一个纤维节模型基于Timoshenko横梁元素在这研究被建议基于考虑轴的框架元素的非线性的分析，曲折，并且砍变丑。这个模型用砍弯曲被完成相互依赖的明确的表达(SBIF)。元素的形状功能从平衡方程的同类的形式的准确答案被导出因为Timoshenko变丑hypothesis.The建议元素从砍锁是免费的。部分纤维模型与一个多轴的粘性材料模型一起被组成，它被用来模仿每纤维的联合砍轴的非线性的行为。由在纤维之中强加变丑相容性条件，部分、元素的抵抗力量是计算的。因为SBIF形状功能与为节的不同形状的砍修正者因素是交互的，一个反复的过程在建议Timoshenko元素的非线性的州的决心被介绍。另外，建议模型由采用一条corotational坐标转变途径处理几何非线性的问题。为非线性的几何分析的SBIFTimoshenko元素的corotational算法的推导过程被介绍。数字例子证实与一个纤维节模型一起的SBIFTimoshenko元素有象基于灵活性的明确的表达的一样的精确性和坚韧性。最后，SBIFTimoshenko元素被扩大并且demonstratedin一个三维的数字例子。

简介：Inthispaper,usingthe1999~2007GPSvelocityfielddata,andbychoosingtheoptimalblockmodel,weobtainedthedeformationmodelsapplicabletotheboundaryzonesofmajorblocksandtheslipratesofblockboundaryfaultsonthemid-southernsegmentoftheNorth-SouthSeismicBelt.Theresultsshowthat:ontheLongmenshanfaultzone,thetensionalandcompressivesliprateissmallontheBaoxing-Wenchuansegment,about0.5~1.8mm·a-1,andtherateisrelativelysignificantonthesegmentoftheWenchuan-Maoxian,as1.8~3.8mm·a-1;ontheXianshuihefaultbelt,thereisacertaindifferenceinspatialdistributionbetweenthetensionalsliprateandstrike-sliprate:thetensionalsliprate(8.1mm·a-1)isbiggerthanthesinistralstrike-sliprate(4.8mm·a-1)atthenorthoftheLuhuoregion;thetensionandcompressionsliprateisbasicallythesameasthestrike-sliprateatLuhuo-Dawu;theDawu-Kangdingsectionpresentsatrendofdecreasedstrike-sliprateandincreasedtensionalsliprate;theKangding-Shimiansegmentshowsastrike-slipnature;thestrike-sliprateissignificantlygreaterthanthetension/compressionrateontheXiaojiangfaultzone;thesliprateontheRedRiverfaultzoneshowsobviousspatialsegmentation,thesliprateissmallerinitsnorthwestpart,butwithacertainamountoftensional/compressioncomponent,4.7mm·a-1ontheJingdongsegment.ThesegmenteastofJingdong(westernGejiu)ismainlyofstrike-slip,withasliprateof4.5mm·a-1.