非自由场地的动力沉降估计
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摘要
重点研究了地层成层性对非自由场地动力沉降的影响。为了简化分析上部结构对于地层的附加作用,引入了动力锥传力机制,建立了非均质地基模型。根据地基或结构变形与沉降的不同成因,在总结自由场地研究成果的基础上,将建筑物非均质地基地震荷载或其他动力荷载引起的动力沉降分解为以下几部分:循环剪切荷载导致的土壤体积压缩;上部结构的反射或散射的动力剪切荷载引起的附加沉降;地基土壤动力非线性过程中由于材料的刚度退化引起的变形等沉降。以砂土地基为例,给出了求解的过程和步骤。
In order to study the effect of layered ground on dynamical deformation of unfree field,which is a very complex and hard to deal with,firstly the concept of unfree field is explained and a sand layered subsoil is suggested as an example of unfree field. According the different causes to induce the deformation of subsoil and structures,the total settlement or the deformation is divided into the volume compresion of soil under recycled shear force,added settlement by dynamical action from the up-structures,and the settlement from soil deformation by modulus degeneration of dynamical nonlinearity. A cone model is introduced to analyze the scattered source and research the interaction of structures and multi-layers-subsoil. The solving process is given to analyze and evaluate the settlements,and satisfied actory results are obtained.
In order to study the effect of layered ground on dynamical deformation of unfree field,which is a very complex and hard to deal with,firstly the concept of unfree field is explained and a sand layered subsoil is suggested as an example of unfree field. According the different causes to induce the deformation of subsoil and structures,the total settlement or the deformation is divided into the volume compresion of soil under recycled shear force,added settlement by dynamical action from the up-structures,and the settlement from soil deformation by modulus degeneration of dynamical nonlinearity. A cone model is introduced to analyze the scattered source and research the interaction of structures and multi-layers-subsoil. The solving process is given to analyze and evaluate the settlements,and satisfied actory results are obtained.
引文
1MenF L,CuiJ,ChenW H.Evaluation of seismic settlement of building resting on saturated sand subsoil[A].In:Proc.4thECSD[C].[s. l.]:[s.n.],1999
2陈文化.非自由场地的土层动力反应和振动液化研究[博士后科研报告][R].北京:北方交通大学,2001
3S eedHB.Settle me nto fdrys andsqu ringearthquakes[J]. ASCESoilMecha nicsandFoundations,1972,198(1):318～397
4Ak irk.Ani nversep roblemap pr oachtosett lementprediction[J ].ASC ESoilsandFoundations,1980,20(4):342～348
5SiddharthanR. Resi dualp orewater pre ssureandst ructuralresponse[J].SDEE,1990,9(5):285～293
6AlbsDe,S eedP,SandHB.Li qu efact ionin larges cales implesheartests[J].GeotechancalEng.DivisionASCE,1976,101(1):12～ 19
7HellerL W. Disc ussiononsand li quefa ction inlarg escalesimplesheartests[J].GeotecgancalEng.DivisionASCE,1977,102(2):189～ 201
8WhitmanR V.Liquefacti onc o nsequencesforastructu re[A]. In:Proc.ofSD EEconf.[C].[s.l.]:[s.n.],1982,783～791
9UlrichHolzl oh ner.Set tlementofsh al lowf ound ati onsonsands oilandfounda tione xp erimentalstudyonliquefaction[A].In :10thWCEE[C].[s.l.]:[s.n.],1992,64～77
10S taoY.Settle me ntandincli nationof reinforc edconcre tebu ild in ginDgupancit ydueto liquefactiondurin gthe1990Philippineearthquake[A]. In:10thWCEE[C].[s.l.]:[s.n.],1992,132～144
11Sh ir oTadada.Es timatio nofearthqu ake induceds ettlementforlifelineengineering[ A].In:9thWCEE[C].[s.l.]:[s.n.],1988,263～277
12Hir odh iMatsu da.S ettle mentande xc essporew ater pressur eo fsatur atecl ayin ducedbycy clicshearwithdifferentperio d[A].In:9thWCEE[C].[s.l.]:[s.n.],1988,222～231
13 MasahoYoshida.S et tleme ntchar acterist ic sofsan dygro undimp rovedb ygraveldrainsystemduringearthqua ke[A].In:10thWCEE[C].[s.l.]:[s.n.],1992,153～164
14陈文化,崔杰,门福录等.非均质地基的地震有效应力分析法[J].水利学报,2000,(10):54～60
15陈文化.建筑物地基的地震液化问题[博士学位论文][D].哈尔滨:中国地震局?こ塘ρа芯克 ?1999
16 Dr abki nBY.Es ti matingset tlementofsandcausedbyconstructvibration[J].Geo.Engineering,ASCE ,1996,122(5):233～24 3
17NagazaS Yasuda.E ffect iv enessoft op-shapedc on creteb lockinred uc in gsettlementingroundliquefiedbyan earthquake[A].In:10thWCEE[C].[s.l.]:[s.n.],1992,211～223
2陈文化.非自由场地的土层动力反应和振动液化研究[博士后科研报告][R].北京:北方交通大学,2001
3S eedHB.Settle me nto fdrys andsqu ringearthquakes[J]. ASCESoilMecha nicsandFoundations,1972,198(1):318～397
4Ak irk.Ani nversep roblemap pr oachtosett lementprediction[J ].ASC ESoilsandFoundations,1980,20(4):342～348
5SiddharthanR. Resi dualp orewater pre ssureandst ructuralresponse[J].SDEE,1990,9(5):285～293
6AlbsDe,S eedP,SandHB.Li qu efact ionin larges cales implesheartests[J].GeotechancalEng.DivisionASCE,1976,101(1):12～ 19
7HellerL W. Disc ussiononsand li quefa ction inlarg escalesimplesheartests[J].GeotecgancalEng.DivisionASCE,1977,102(2):189～ 201
8WhitmanR V.Liquefacti onc o nsequencesforastructu re[A]. In:Proc.ofSD EEconf.[C].[s.l.]:[s.n.],1982,783～791
9UlrichHolzl oh ner.Set tlementofsh al lowf ound ati onsonsands oilandfounda tione xp erimentalstudyonliquefaction[A].In :10thWCEE[C].[s.l.]:[s.n.],1992,64～77
10S taoY.Settle me ntandincli nationof reinforc edconcre tebu ild in ginDgupancit ydueto liquefactiondurin gthe1990Philippineearthquake[A]. In:10thWCEE[C].[s.l.]:[s.n.],1992,132～144
11Sh ir oTadada.Es timatio nofearthqu ake induceds ettlementforlifelineengineering[ A].In:9thWCEE[C].[s.l.]:[s.n.],1988,263～277
12Hir odh iMatsu da.S ettle mentande xc essporew ater pressur eo fsatur atecl ayin ducedbycy clicshearwithdifferentperio d[A].In:9thWCEE[C].[s.l.]:[s.n.],1988,222～231
13 MasahoYoshida.S et tleme ntchar acterist ic sofsan dygro undimp rovedb ygraveldrainsystemduringearthqua ke[A].In:10thWCEE[C].[s.l.]:[s.n.],1992,153～164
14陈文化,崔杰,门福录等.非均质地基的地震有效应力分析法[J].水利学报,2000,(10):54～60
15陈文化.建筑物地基的地震液化问题[博士学位论文][D].哈尔滨:中国地震局?こ塘ρа芯克 ?1999
16 Dr abki nBY.Es ti matingset tlementofsandcausedbyconstructvibration[J].Geo.Engineering,ASCE ,1996,122(5):233～24 3
17NagazaS Yasuda.E ffect iv enessoft op-shapedc on creteb lockinred uc in gsettlementingroundliquefiedbyan earthquake[A].In:10thWCEE[C].[s.l.]:[s.n.],1992,211～223
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