复合地基承载力和抗震性能初探

整理文档很辛苦,赏杯茶钱您下走!

免费阅读已结束,点击下载阅读编辑剩下 ...

阅读已结束,您可以下载文档离线阅读编辑

资源描述

GUANGDONGARCHITECTURECIVILENGINEERING201377JUL2013No.7,、,。,,、,,;,。,,,,、。、“”。1,50~150mm,。,、,、,。、,,,,。,,,,,。[1]:,,P-s,,。P-s1,a、b150mm20mm。(CompositeFoundationBearingCapacityandSeismicPerformancePrelimilaryInvestigationXuXinxing1,2XueJiangwei3(1、GuangzhouMunicipalEngineeringDesignandResearchInstituteGuangzhou510602,China;2、GuangzhouUniversityInstituteofCivilEngineeringGuangzhou510006,China;3、TaiyuanMunicipalCommissionofHousingandUrban-RuralDevelopmentTaiyuan030024,China)Abstract:Foundationtreatmentoffinalsettlementandtheoreticalcalculationvaluestendtoexistcertaindifference,staticloadtestofpileheadofstatechangeswillgreatlyinfluencethesettlementcurve,thatistoartificiallycreateapredetermined,morereasonablesettlementcurvesprovidethebasisfor.Thecushionisarrangedtoseparateeachpile,pile,thesoilbetweenthepilesandfoundationdeformationisnotsynchronous,weakentheoverallstructuralperformance.Technicalmeasurescanstilluse“pilepartner”asstructuralmeasures,thepiletopsettlementreservation,thecompositefoundationformedcertainconstraintsonthefoundationsoilinthealtituderange,toimprovetheverticalbearingcapacityandimprovethehorizontalbearingcapacityoffoundationsoil.Keywords:compositefoundation;mattresslayer;seimicperformance;pilepartner徐新星1,2薛江炜3(1、广州市市政工程设计研究院广州510602;2、广州大学土木工程学院广州510006;3、太原市城乡建设委员会太原030024):地基处理最终沉降量和理论计算值往往存在一定的差异,静载试验时桩头状态的改变会明显影响到沉降曲线,这就为人为地创造一种预定的更合理的沉降曲线提供了依据。褥垫层的设置使每根桩相互独立,桩、桩间土和基础变形不同步,削弱了结构整体抗震性能。而采用“桩伴侣”作为构造措施,桩顶预留沉降,使复合地基桩在高度范围内对地基土形成一定的约束,在提高竖向承载力的同时也提高了地基土的水平承载力。:复合地基;褥垫层;沉降量;抗震性能;桩伴侣302[6]02-9-102-12-1003-3-2003-6-2803-10-604-1-140.00.10.20.30.40.50.60.70.80.91P-sPkPasmms=0.01bPbultPc=蚝虔PbultPbPeaba—150mmb—20mm:JUL2013No.7201377),SB=0.01a、bPaPb,PbPa。b,,a,,b12,:Pc(Pc=蚝虔Pbult)。,,、、,P-sSB。[2],(,)、,。,()、。[6],,“”:(2),。,:,。:fspk=mRaAp+b(1-m)fsk⑴:fspk(kPa);m;Ra(kN);Ap(m2);b,,0.75~0.95,;fsk(kPa),,,。,,,fsp,u:fsp,u≤nRu+(A-Ap)fu⑵:n;Ru;A、Ap、;fu。⑵、。2,⑵2,⑴(b1)。[2],⑴,⑴,“”、“”、“”、,。。,,P-s,。,、、,,,P-s。:(),、。2-T-sT-s,,,,,15%,,、313T-s%90s70103050JUL2013No.7201377,,。,,。,。,。3,,P-s,。T-s,,,。,、、,,,,。,,,,。,,70%,90%,。T-s,,。,T-s,“”。3。,;,,,,,。,,,、CFGPHC,,。[7],,,,;,,、,,,。,,。,,[8],、,,。,、,。,。、。,、,,,()。4T-s“”T-s,():fspk=xmRaAp+ag(1-m)fsk⑶324“”mkN0246810121416-140-120-100-80-60-40-200201BLv0.21CLv0.61ALv0.61C0.61B0.2mkN·m0246810121416-40-200204060801001201BLv0.21CLv0.61ALv0.61C0.61B0.2140:fspk(kPa);m;Ra(kN);Ap(m2);x,0.7~0.9,;a,,;g,2,,;fsk(kPa)。⑶T-s,。⑶fspk⑴,。5,,,。,。,,,,,、,,,,。,,,,,。,,。,,。4、,1B、1C,1Alv、1BLv1CLv,、;、3~4。,,。66.1、,,,,,、。T-s,。6.2,,,,,,。6.3,,。6.4,,“”,、,;、。(45):JUL2013No.7201377332JUL2013No.7201377,(2)。、、,,,,,。,,,。,,,。,。3.2,。,,,。,。44.1,,。4.2,,,。4.3,。4.4,。,、,、、,。,,,。[1][2011]672011-2015[Z][2],,.[J].,2012(S2)!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!![1],,.CFG[J].,2004(5)[2].[J].,2002(4)[3],,.()—[J].,2004(5)[4],,.[J].,2013(S1)[5],,.[J].,2008(S)[6],,.“”[C].2004,2004[7],.[J].,2000(2)[8],,.[J].,2009(11)[9]:,:200710160966.1(33)45

1 / 5
下载文档,编辑使用

©2015-2020 m.777doc.com 三七文档.

备案号:鲁ICP备2024069028号-1 客服联系 QQ:2149211541

×
保存成功