資源描述:
《基礎(chǔ)剛度對(duì)剛性樁復(fù)合地基樁土荷載分擔(dān)比的影響》由會(huì)員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫。
1、第32卷第6期巖土工程學(xué)報(bào)Vol.32No.62010年.6月ChineseJournalofGeotechnicalEngineeringJune2010基礎(chǔ)剛度對(duì)剛性樁復(fù)合地基樁土荷載分擔(dān)比的影響12213孫訓(xùn)海,許力和,李艷霞,佟建興,雷曉雨(1.中國(guó)建筑科學(xué)研究院地基所,北京100013;2.中國(guó)天辰工程有限公司,天津300400;3.天津大學(xué)建筑工程學(xué)院,天津300072)摘要:結(jié)合甲醇儲(chǔ)罐基礎(chǔ)的現(xiàn)場(chǎng)試驗(yàn),對(duì)不同基礎(chǔ)剛度條件下的剛性樁復(fù)合地基樁、土承載力發(fā)揮系數(shù)和樁、土荷載分擔(dān)比進(jìn)行了研究。試驗(yàn)表明:基礎(chǔ)剛度對(duì)樁、土承載力的發(fā)揮和荷載分擔(dān)比具有顯著的影響,
2、在給定褥墊厚度、相同樁長(zhǎng)、相同樁距條件下,基礎(chǔ)剛度較大的樁承載力能充分發(fā)揮,柔性基礎(chǔ)條件下樁間土承載力能充分發(fā)揮,樁承載力發(fā)揮很少?;A(chǔ)剛度較大的剛性樁復(fù)合地基的樁荷載分擔(dān)比比柔性基礎(chǔ)樁荷載分擔(dān)比大,而柔性基礎(chǔ)土荷載分擔(dān)比比剛性基礎(chǔ)土荷載分擔(dān)比大。關(guān)鍵詞:剛性樁復(fù)合地基;基礎(chǔ)剛度;柔性基礎(chǔ);發(fā)揮系數(shù);褥墊;分擔(dān)比中圖分類號(hào):TU473文獻(xiàn)標(biāo)識(shí)碼:A文章編號(hào):1000–4548(2010)06–0850–06作者簡(jiǎn)介:孫訓(xùn)海(1979–),男,江蘇濱海人,博士研究生,從事地基、基礎(chǔ)工程設(shè)計(jì)與研究。E-mail:haisun1979@yahoo.com.cn。Effec
3、toffoundationrigidityonpile-soilloadshareratioofrigidpilecompositefoundation12213SUNXun-hai,XULi-he,LIYan-xia,TONGJian-xing,LEIXiao-yu(1.InstituteofFoundationEngineering,ChinaAcademyofBuildingResearch,Beijing100013,China;2.ChinaTianchenEngineeringCorporation,Tianjin300400,China;3.Colle
4、geofCivilEngineering,TianjinUniversity,Tianjin300072,China)Abstract:Onthebasisoffieldtestsoncarbinolstoragetankfoundation,investigationsareconductedonthebearingcapacityandpile-soilloadshareratioofrigidpilecompositefoundationwithdifferentrigidities.Studiesshowthatchangeofthefoundationri
5、gidityhassignificanteffectonthedevelopmentofpile-soilbearingcapacityandloadshareratio.Underthesamecushionthickness,pilelengthandspace,thebearingcapacityofpileandsoilcanbothdevelopsufficientlyforthefoundationwithenoughrigidity.Whilefortheflexiblefoundation,thebearingcapacityofsoilbetwee
6、nthepilescandevelopsufficiently,butthatofthepilesdevelopslittle.Thepileloadshareratioofrigidpilecompositefoundationislargerthanthatofflexiblefoundation.ButthesoilloadshareratioofflexiblefoundationislargerthanthatofrigidfoundationKeywords:rigidpilecompositefoundation;foundationrigidity;
7、flexiblefoundation;developingfactor;cushion;loadshareratio0引言本文結(jié)合天津大港某化工儲(chǔ)罐工程,通過現(xiàn)場(chǎng)不同基近年來,剛性樁復(fù)合地基在工業(yè)與民用建筑中應(yīng)礎(chǔ)剛度的載荷試驗(yàn),著重研究了基礎(chǔ)剛度對(duì)剛性樁復(fù)用越來越廣泛,剛性樁復(fù)合地基樁體多用CFG樁、靜合地基樁、土承載力發(fā)揮系數(shù)及樁、土荷載分擔(dān)比的壓預(yù)制樁等。目前工民建領(lǐng)域主要是足夠剛度基礎(chǔ)下影響。的復(fù)合地基,足夠剛度基礎(chǔ)下的復(fù)合地基,基礎(chǔ)具有向樁上轉(zhuǎn)移荷載的能力,在給定褥墊厚度條件下樁和1工程實(shí)例樁間土承載力都能充分發(fā)揮。1.1工程概況柔性基礎(chǔ)下剛性樁復(fù)合地基