受冲切破坏四桩承台的压杆模型

《受冲切破坏四桩承台的压杆模型》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、声明小人郑重声l刿：本论文是在导,Jiljf内指导下，独立进行研究工作所取得的成粜，撰写成博二}j／硕二L学位论文：受盐趔篮坯幽蛙巫鱼艘匿挂撞)魁”。除论文巾已经注明引用的内容外，对沦文的研究做出重要贡献的个人和集体。均已在文中以明确方式标明。本论文中不包含任何未加l

2、J{确注I埘的其他个人或集体已经公开发表或未公开发表的成果。水声叫的法律责仃由本人承担。ACKNOWl．EDGEMENTSWOtddliketoacknowledgelheassis[allCeandcontributionsofmysupravismProESuXiaozuforheg

3、reatWUlkhehasdoneininakingallthispossible．I’heassistanceof’lien’Ijhin(USA)andKalI-HeinzReinneck(Germany)hasalsobeengreatlyacknowledgedwithgratirudeAcknowledgementalsogoestowardsmyChinesecotleagueswithgratitudewhohaveprovidedrilewithahighlevelofcoopelationwouldalsoliketoacknowled

4、getheChineseScholarshipCouncilforthefinancialassistanceJwouldfinallyliketothankmyfamily(Uganda)andtheLivingstones(Canada)fo,，theillOl·alandmotivationalbackupI)EDlCAl’loNDedicatedtowardstheengineeringcomnlunityfoJ’theservicestheypl-ovideforvalioussocieties．jj㈣1：甜f硒E厶两i?i西妇p谴E蕊挂“l

5、LI％恭两垤；i酯VChapter1INTRODUCTION1．1DEsCRIPTIoNoFTHEPRoBLEMInthepastpilecapshavebeendesignedsimilartoreinforcedtwo-wayslabsaspervariousdesigncodes．Flexuraldeformationsinlightlyreinforcedtwo-wayslabsleadtotheirductility．Previousexperimentalobservationshaveactuallyshownthatpilecapsbe

6、haveverydifferently．Theydeformverylittlepriortofailurehencekeepingtheloaddistributiontotherespectivepilesmoreorlessconstant．Asaresult，pilecapsdonothavethenecessaryflexibilitytoinsureuniformityofpileloadsatfailure．Pilecapsalsodonotbehaveaswidebeams．Onlyaconcentratedzoneofconcrete

7、abovethepilesresistssignificantload．Further,planesectionsdonotremainplaneinpilecapsnordoesitremainplaneinanyotherpunchingshearpronesectionssuchasthejoinksbetweencolumnsandslabs．Strutaction，notbeamaction，isthepredominantmechanismofshearresistanceinpilecaps．Thusstrut-and·tiemodels

8、moreaccuratelyrepresentthebehaviorofdeeppilecaps．Forexample，strut-and—tiemodelscorrectlysuggestthattheloadatwhichali#tlyreinforcedpilecapfailsintwo-waysheardependsonthequantityofIon百tudinalreinforcement．FlexuraldesignCanbebestaccomplishedusingasimplestrut—and—tiemodelofwhichitha

9、sbeenprovedexperimentallythatthelongitudinalrei