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十五層住宅樓結(jié)構(gòu)設(shè)計(jì)-展示頁(yè)

2025-07-06 02:32本頁(yè)面
  

【正文】 /12= kN?mMHE= MEH= kN? mMHJ=1/12 g右L2=1/12= kN?mMJH= MHJ= kN? m(2)分配系數(shù)E節(jié)點(diǎn):μe=ie/(ie+ic)= /(+2)=μe‘=ic/(ie+ic)= /(+2)=H節(jié)點(diǎn):μhl=ih/(ih+ih’+)=/(++2)=μjr= ih’ /(ih+ih’+)= /(++2)=μj’=/(ih+ih’+)= /(++2)=J節(jié)點(diǎn):μj=ij/(ij+)=/(+2)=μj’=/(ij+)= /(+2)= (3)彎矩分配 上柱下柱右梁 左梁上柱下柱右梁 左梁上柱下柱     (4)標(biāo)準(zhǔn)層彎矩圖610層(1)計(jì)算固端彎矩把梯形荷載化作等效均布荷載g邊左=g左+(12α2+α3)g右 =+(12+) = kN/mg邊右= g左+(12α2+α3)g右 =+(12+) = kN/mMEH=1/12 g左L2=1/12= kN? mMHE= MEH= kN? mMHJ=1/12 g右L2=1/12= kN? mMJH= MHJ= kN? m(2)分配系數(shù)E節(jié)點(diǎn):μe=ie/(ie+ic)= /(+242)=μe‘=ic/(ie+ic)= 24/(+242)=H節(jié)點(diǎn):μhl=ih/(ih+ih’+)=/(++242)=μjr= ih’ /(ih+ih’+)= /(++242)=μj’=/(ih+ih’+)= 24/(++242)=J節(jié)點(diǎn):μj=ij/(ij+)=/(+242)=μj’=/(ij+)= 24/(+242)=(3)彎矩分配上柱下柱右梁 左梁上柱下柱右梁 左梁上柱下柱  ?。?)彎矩25層(1)計(jì)算固端彎矩把梯形荷載化作等效均布荷載 g邊左=g左+(12α2+α3)g右 =+(12+) = kN/m g邊右= g左+(12α2+α3)g右 =+(12+) = kN/mMEH=1/12 g左L2=1/12= kN? mMHE= MEH= kN? mMHJ=1/12 g右L2=1/12= kN? mMJH= MHJ= kN? m(2)分配系數(shù)E節(jié)點(diǎn):μe=ie/(ie+ic)= /(+2)=μe‘=ic/(ie+ic)= /(+2)=H節(jié)點(diǎn):μhl=ih/(ih+ih’+)=/(++2)=μjr= ih’ /(ih+ih’+)= /(++2)=μj’=/(ih+ih’+)= /(++2)=J節(jié)點(diǎn):μj=ij/(ij+)=/(+2)=μj’=/(ij+)= /(+2)=(3)彎矩分配上柱下柱右梁 左梁上柱下柱右梁 左梁上柱下柱   1313(4)彎矩底層(1)計(jì)算固端彎矩把梯形荷載化作等效均布荷載g邊左=g左+(12α2+α3)g右 =+(12+) = kN/mg邊右= g左+(12α2+α3)g右 =+(12+) = kN/mMEH=1/12 g左L2=1/12= kN? mMHE= MEH= kN? mMHJ=1/12 g右L2=1/12= kN? mMJH= MHJ= kN? m(2)彎矩分配上柱下柱右梁 左梁上柱下柱右梁 左梁上柱下柱              ?。?)底層彎矩圖用分層法求得各層彎矩圖后,將各層彎矩疊加可得整個(gè)框架結(jié)構(gòu)在恒載作用下的彎矩圖,很明顯,疊加后框架內(nèi)各節(jié)點(diǎn)彎矩并不一定能達(dá)到平衡,這是由于分層法計(jì)算的誤差造成的。mMHJ=1/12 g右L2=1/12= kN(結(jié)構(gòu)內(nèi)力用彎矩分配法計(jì)算)頂層(1)計(jì)算固端彎矩(假定所有彎矩以順時(shí)針為正)把梯形荷載化作等效均布荷載g邊左=g16左+(12α2+α3)g16右 =+(12+) = kN/mg邊右= g16左+(12α2+α3)g16右 =+(12+) = kN/mMEH=1/12 g左L2=1/12= kN上端 Mcu=Vij(hy)下端 Mcl= Vijy 柱端彎矩計(jì)算結(jié)果如表:層次A柱B柱C柱上端下端上端下端上端下端16151413121110987654321計(jì)算梁端彎矩梁端彎矩可按節(jié)點(diǎn)彎矩平衡條件,將節(jié)點(diǎn)上下柱端彎矩之和按左右梁的線剛度比例分配。計(jì)算結(jié)果如下圖:計(jì)算公式:Mbl=( Mcu +Mcl)k1/(k1+k2); Mbr=( Mcu +Mcl)k1/(k1+k2) k1= k2=水平地震作用下的彎矩圖(kN? m)(5)計(jì)算梁端剪力示意圖如下圖計(jì)算公式:Vb=( Mbl +Mbr)/l (6)計(jì)算柱軸力水平地震作用下的剪力圖(kN)水平地震作用下的柱的軸力圖(kN)各柱所分配的剪力V16左=V16右=739/2505= kNV16中=1027/2505= kNV15左=V15右=2000/7032= kNV15中=3032/7032= kNV14左=V16右=2000/7032= kNV14中=3032/7032= kNV13左=V13右=2000/7032= kNV13中=3032/7032= kNV12左=V12右=2000/7032= kNV12中=3032/7032= kNV11左=V11右=2000/7032= kNV11中=3032/7032= kN V10左=V10右=2241/8092= kNV10中=3610/8092= kNV9左=V9右=2241/8092= kNV9中=3610/8092= kNV8左=V8右=2241/8092= kNV8中=3610/8092= kNV7左=V7右=2241/8092= kNV7中=3610/8092= kNV6左=V6右=2241/8092= kNV6中=3610/8092= kNV5左=V5右=2312/8518= kNV5中=3894/8518= kNV4左=V4右=2312/8518= kNV4中=3894/8518= kNV3左=V3右=2312/8518= kNV3中=3894/8518= kNV2左=V2右=2312/8518161= kNV2中=3894/8518161= kNV1左=V1右=2495/8081= kNV1中=3091/8081= kN確定反彎點(diǎn)高度和地震荷載不一樣的是,風(fēng)荷載接近于均布荷載由于各梁柱剛度比k小于3,因此須修正反彎點(diǎn)高度(但本設(shè)計(jì)中未修正),根據(jù)假定2,反彎點(diǎn)高度y=。橫向框即頂點(diǎn)位移計(jì)算(ξi為層間相對(duì)位移)層次Gi (kN)∑Gi(kN)∑Di(kN/m)ξi=∑Gi/∑Di△i180812851838518485185851868092780928809298092108092117032127032137032147032157032161677T1= =橫向地震作用計(jì)算(因本建筑高度大于40m,不應(yīng)采用底部剪力法,但本設(shè)計(jì)仍用底部剪力法計(jì)算)在Ⅲ類(lèi)場(chǎng)地,6度地震區(qū),結(jié)構(gòu)的自振周期和地震影響系數(shù)αmax為:Tg= αmax= α1=( Tg/T1)αmax=(/)=由底部剪力法計(jì)算公式: FEK=α1GE== KN由 T1=>= ξn= T1+=+=△Fn=ξn FEK== KNFi= GiHI/(∑GiHI)FEK(1ξn) (頂層加上△Fn)層次hi(m)Hi(m)Gi(KN)GiHIGiHI/(∑GiHI)Fi(KN)Vi(KN)1233343536373839310311312313314315316內(nèi)力分析地震作用下的內(nèi)力計(jì)算,地震作用力沿豎向呈倒三角形分布,內(nèi)力計(jì)算采用D值法,采用公式:Vjk=Djk/∑DjkVfk(1)各柱分配的剪力V16左=V16右=739/2505= kNV16中=1027/2505= kNV15左=V15右=2000/7032= kNV15中=3032/7032= kNV14左=V16右=2000/7032= kNV14中=3032/7032= kNV13左=V13右=2000/7032= kNV13中=3032/7032= kNV12左=V12右=2000/7032= kNV12中=3032/7032= kNV11左=V11右=2000/7032= kNV11中=3032/7032= kN V10左=V10右=2241/8092= kNV10中=3610/8092= kNV9左=V9右=2241/8092= kNV9中=3610/8092= kNV8左=V8右=2241/8092= kNV8中=3610/8092= kNV7左=V7右=2241/8092= kNV7中=3610/8092= kNV6左=V6右=2241/8092= kNV6中=3610/8092= kNV5左=V5右=2312/8518= kNV5中=3894/8518= kNV4左=V4右=2312/8518= kN
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