1、26 4 2010 M8 =StructuralEngineersVol.26, No.4Aug.2010l :2010-03-12 “T, Email:y ! |s董徐奋(6vy“, Z200092)K 1 进行古建筑的维修加固,首先要确定的就是施加于结构或构件上的作用,然后通过作用效应与其承载力相比,才能确定该结构或构件能否继续使用或需经加固后继续使用。施加于结构上的作用直接影响维修加固方案的确定。对古建筑修缮设计基准期进行重新考虑,分别讨论了永久作用和可变作用对古建筑的影响,另外还对地震作用进行了研究,确定了木材及其加固材料的强度,为古建筑的维修加固提供了技术资料。1oM 木结构, 古建
2、筑, 荷载AnalysisofLoadsAppliedonHistoricTimberBuildingsDONGXufen(DepartmentofBuildingEngineering,TongjiUniversity,Shanghai200092, China)Abstract Forthepurposeofmaintenanceofhistoricbuildings,thefirststepistodeterminetheloadappliedonthestructureormember, andthencalculateefectsofactions.Comparedwiththebe
3、aringcapacity, astructureoramembercanbedeterminedwhetheritcanbeusedcontinualyoritneedstobestrengthened.Theloadappliedonthestructuredirectlyinfluencestheplanofmaintenance.Inthispaper,designreferenceperiodforrepairingisreconsidered,theefectofvariableandpermanentactiononthehistoricbuildingsisdiscussed,
4、inaddition, theroleofearthquakesisstudied.Atlast, thestrengthvaluesoftimberandstrengtheningmaterialsaredetermined, whichprovidestechnicaldataformaintainingthehistoricbuildings.Keywords timberstructure, historicbuilding, load1 C !,T 0H,MXA。(2) 8 (Z0 v H( 8Ms v H),v,0 l H, 9l, / f sY“, A Ahl。(3) ,0 q“
5、 ;1.1y4“,4“ I ny1, I nyX) F% 。3.3 VMTVMT 、 L 、。1) y !F%?S? V。2) L y !F%?S L ?。y,i L 。y,Y 7b, 4;,yNi L ,7y?S y L ( Y,yNE?S |。BZE y L d9, d9sS 9,y !9 Kvs , | sTy L S。 “ - Z d9 ,yNyp Z y, L V f I n。 !* H Z Z5 , Z ( 650 N,5 L 3.25kN/m2,y9v“ 1.1,5 L 3.58kN/m2。yp |3.6kN/m2Ty L ,y?S%V A L , O f B,yNy L F“
6、、 “ “ V?S%V A B Y|。 H y p ,1K 7b HW ,+Y1y, .T 7K 7b,E !q9F。3)、TyS, Vy?SZE9。y+ y,1 pyF% !9 P 1 ,7?S 50 MBd9 p, !9 50 M,yN ?v?S |。1?S 。y V L !9dBS, (sF E,/ ) “ 9 ZE。! i H M qsFQ(x)Vs,sf FQ(x)=exp-exp-x-ms (3)5 V (E(Q)Ss(Q)sYE(Q)=0.577 2s+m (4)s(Q)= p26s2 =1.282 6s (5)7 !9 =Kv M Qmaxqsf FQmax(x) V/ T p
7、FQmax(x)= FQ(x)m= exp -exp-x-msm=exp -exp-x-ms elnm=exp -exp-x-m-slnms=exp -exp-x-(m+slnm)s (6)N Vn, Sss H,KvQmaxsf FQmax(x)9 s, Ss(Qmax) M,s(Qmax)=s(Q), (E(Qmax)=0.577 2s+m+slnm (7) | i H M qs0.5sS,5 V !9 TSQtk=E(Qmax)+1.645s(Qmax)=0.577 2s+m+slnm+1.645 1.282 6s=2.687 1s+m+slnm (8)T, m !9 (CQ 。 !9
8、(44StructuralEngineersVol.26,No.4 StructuralAnalysis CQ ,V7S。 !QTk?S? !9 50 MS, QTky !9 S,5“ hh=QTk /QTk (9)1 ms V9 QTkQTk,V79 “ h。5Ty“ y?S 。m,s VV1 i Hd9 , (CQ mV2。 ZE V p !9 “ ,9 !9 500 M“ , V3。V1d9 Table1 Statisticalparametersofvariousloads qs i H(_)FWY(x)=exp -exp -x-0.359Wk0.167Wk(_)FWY(x)=exp
9、-exp -x-0.323Wk0.151WkFSY(x)=exp -exp -x-0.244S0k0.199S0kV2 !9 = (CQ mTable2 Averageappearfrequencymintheloaddesignstandardsperiod!9 / M50 50050 50050 500V3“ hTable3 Loadmodifingcoefficienth!9 / M50 500(_) 1.000 1.263(_) 1.000 1.2641.000 1.2943.4 T“ I ny1# !9 P , F !S Vy F !9?SY y !,B f /, F !68 H,
10、u F ! 4B1 p;9 H,19 F !1 p。+Y1y, V?SJ y !。6BZ ,y ! / +y,CM1zh ?hT,yNvY y9 T ? 1 p。4 ! !9 y !F%?S?,! |ZE /:6.4.2H y ! H, !9 / ?:(1)CSES ! !9?S?,i1“ 0.9;+ y1p 6。(2)4XAM !X q, I n T ! Y“ ,“ | V4 U。V4 I n T ! “ Table4 Adjustmentcoefficientconsideringlong-termloadsandwoodinessagingyy HW/ M“ F!9 F Fg !9 !9
11、 100 0.95 0.90 0.90300 0.85 0.80 0.85500 0.75 0.70 0.75(3)T q,CSES ! ! I?S?“ 0.8。(4) q H, z, OKv !v20mm, !9 V410%。y !F% H, 7Eq ?, 5qM !。f /, !9 !M !9。 L 1 ! , sy Y91 !l( ),1i , | !T,V M, 9M !? T,yN, !9M ! !9。 EqM !,5 )q !9, !9 q ! !45s =26 4 9。5 s y !F%?S1 !y H ,/ :(1) I nyN,yp !9500 M。(2) yT, ?S |,
12、71 L。(3)ypy L |3.6kN/m2。(4)y ! F !SY y !。(5) !9M ! !9。 ID 1 Sy !.GB50165 92 y !F%/ ?SS.:Sy, 1992.China Ministry of Construction.GB5016592Technicalcodeformaintenanceandstrengtheningofancient timber building S. Beijing: ChinaArchitectureandBuildingPress, 1992.(inChinese) 2 Sy !.GB500092001 y?S S .:Sy,
13、 2001.ChinaMinistryofConstruction.GB500092001LoadcodeforthedesignofbuildingstructuresS.Beijing:ChinaArchitectureandBuildingPress, 2001.(inChinese) 3 Sy !.GB500052003 !9?S S .:Sy, 2003.ChinaMinistryofConstruction.GB50005 2003 Codefordesignoftimberstructures S.Beijing:ChinaArchitectureandBuildingPress
14、, 2003.(inChinese) 4 Sy !.GB500112001 y F !9?SS .:Sy, 2001.ChinaMinistryofConstruction.GB50011 2001 Codeforseismicdesignofbuildings S.Beijing:ChinaArchitectureandBuildingPress, 2001.(inChinese) 5 Sy !.GB500231995 y FkSS .:Sy, 1995.ChinaMinistry ofConstruction.GB 50023 1995Standardforseismicappraiser
15、ofbuilding S .Beijing:ChinaArchitectureandBuildingPress, 1995.(inChinese) 6 Sy !.GB500682001 y V L !9dBSS.:Sy, 2001.China Ministry ofConstruction.GB50068 2001Unifiedstandardforreliabilitydesignofbuildingstructures S.Beijing:China Architecture andBuildingPress, 2001.(inChinese) 7 ./E TM . Z: 6, 1950.
16、LiJ.YingzaoFashi M .Shanghai:TheCommercialPress, 1950.(inChinese) 8 . b T/5 M.:Sy, 1981.LiangSC.QingStructuralRegulations M Beijing:ChinaArchitectureandBuildingPress, 1981.(inChinese) 9 y !F%?SIF.y ! J . +y S, 1994(1):8-10.Draftinggroupoftechnicalcodeformaintenanceandstrengtheningofancienttimberbuilding.LoadAppliedontheHistoricTimberBuilding J.BuildingScienceResearchofSichuan, 1994(1):8-10.(inChinese)46StructuralEngineersVol.26,No.4 StructuralAnalysis
