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1、第34卷第1期防災(zāi)減災(zāi)工程學(xué)報(bào)Vol.34No.12014年2月JournalofDisasterPreventionandMitigationEngineeringFeb.2014*風(fēng)荷載作用下的土-結(jié)構(gòu)動(dòng)力特性分析宿金成1,3,王幼清2,3(1.哈爾濱商業(yè)大學(xué)能源與建筑工程學(xué)院,哈爾濱150028;2.哈爾濱工業(yè)大學(xué)(威海),山東威海264209;3.哈爾濱工業(yè)大學(xué)土木工程學(xué)院,哈爾濱150090)摘要:結(jié)構(gòu)的動(dòng)力特性直接影響到動(dòng)力荷載的作用效應(yīng)。動(dòng)力特性分析中,土體的影響不可忽視。與地震荷載不同,動(dòng)風(fēng)荷載自結(jié)構(gòu)向土體
2、傳播,土體的慣性力可以忽略。無(wú)質(zhì)量地基法可以滿足針對(duì)風(fēng)荷載的土-結(jié)構(gòu)動(dòng)力分析的要求。本文首先推導(dǎo)土-結(jié)構(gòu)動(dòng)力相互作用的運(yùn)動(dòng)方程,在此基礎(chǔ)上,以剪力墻箱型基礎(chǔ)結(jié)構(gòu)為基本分析對(duì)象,確定有限地基域的范圍,分析土-結(jié)構(gòu)整體動(dòng)力特性。認(rèn)為:足夠的基礎(chǔ)埋深,可以有效控制建筑物的擺動(dòng);為控制建筑物的動(dòng)力特性,可以采取措施適當(dāng)使地基土增加一定的剛度;如何在上部結(jié)構(gòu)的質(zhì)量和剛度之間建立對(duì)應(yīng)關(guān)系以控制土-結(jié)構(gòu)系統(tǒng)的動(dòng)力特性,有待進(jìn)一步研究。關(guān)鍵詞:高層建筑;土-結(jié)構(gòu)動(dòng)力特性;有限地基;脈動(dòng)風(fēng);動(dòng)力荷載中圖分類號(hào):TU311.1文獻(xiàn)標(biāo)識(shí)碼:A文
3、章編號(hào):1672-2132(2014)01-0028-06Soil-structuralDynamicCharacteristicsunderWindLoading1,3,WANGYou-qing2,3SUJin-cheng(1.SchoolofEnergyandCivilEngineering,HarbinUniversityofCommerce,Harbin150028,China;2.HarbinInstituteofTechnologyatWeihai,Weihai264209,China;3.SchoolofCi
4、vilEngineering,HarbinInstituteofTechnology,Harbin150090,China)Abstract:Thedynamiccharacteristicsofstructuredirectlyaffecttheeffectofdynamicload.Theinfluenceofsoilcannotbeneglectedintheanalysisofdynamiccharacteristics.Inconsistentwithearthquakeload,dynamicwindloadt
5、ransferfromthestructuretothesoil,sosoilinertiaforcescanbeignored.Masslessfoundationmethodcanmeettherequirementsofsoil-structuraldynamiccharacteristicsanalysisagainstwindload.First,theequationofsoil-structuralinteractionmotionwasintroduced.Second,therangeoffinitefo
6、undationsoilswasdeterminedforshearwallstruc-turewithboxbase.Finally,wholesoil-structuraldynamiccharacteristicswereanalyzed.Itshowsthatadequatefoundationdepthcaneffectivelycontroltheswingofbuilding.Increasingthestiffnessofthesoilcanbeusedforcontrollingsoil-structur
7、aldynamiccharacteristics.Itwouldbefurtherresearchworktoestablishrelationshipbetweenthemassandstiffnessoftheupperstruc-tureforcontrollingsoil-structuraldynamiccharacteristics.Keywords:high-risebuilding;soil-structuraldynamiccharacteristics;finitefoundationsoils;flu
8、ctuatingwind;dynamicload*收稿日期:2013-03-29;修回日期:2013-07-01基金項(xiàng)目:國(guó)家自然科學(xué)青年基金項(xiàng)目(51108124)資助作者簡(jiǎn)介:宿金成(1983-),男,講師,博士。主要從事土-結(jié)構(gòu)相互作用方面的研究。Email:suhuwaa@163.com通訊作者