梁、板配筋计算

建筑结构2集中授课张靖attentiontoimprovingthequalityandefficiencyofdevelopmentandpaymoreattentiontosecurityandreformthepeople'slivelihood,morefocusonmaintainingsocialharmonyandstability,andpromotethedevelopmentoftownshipeconomyinabetterandfaster,createanewnormalXXdevelopmentandlayamoresolidfoundationforXXbuildawell-offsociety.Completedtasksthisyear,wemustalwayspayspecialattentiontotheprimarytaskofdevelopment.XXweakeconomicbase,lowlevelsofdevelopment,economicconstructionistheCenter,wehavetocreateconditionsforfastereconomicdevelopment,accumulatingmorewealth,betterpeople'slives.Effortshouldbemadetothisyear'seconomicgrowth,revenuegrowth,peoplehavemaintainedahighrateofincomegrowth,GDPgrowthofmorethan15percentrespectively.Alwaysgraspthefundamentalimpetusforreform.Wearenownosoldiersbehindmanyindicatorsrankedinthebottomofthecountyfromgettingbigger.Onlybygoingallouttohardwork,hardwork,innovation,reformdoesnotadapttoinstitutionalmechanisms,practices,itispossibletochangethefaceofXXpoor,intoawell-offsocietytogetherwithpeopleacrossthecountry.Wewanttobreaktheoldpatternsofthinking,methodsandorganizationofwork,bravelyandboldlyinto,makingfulluseofalltheadvantages,comprehensivereforms,tomakeallitsvitalityfordevelopmentimpulse,letfullplaytoallsourcesofwealthcreation.Shouldalwaysstability1.已知：某办公楼采用装配式砖混结构，如下图所示，其楼面为30mm厚的水磨石（自重为223/mkN），120mm预应力空心板（面荷载为2.03/mkN），板底刷20mm厚白灰砂浆（自重为173/mkN），大梁支承在240砖墙上，试设计大梁L-1，并画出其配筋图。解：（1）确定计算简图及其截面尺寸和内力图工程要求梁在支承端处不得有竖向和水平方向的位移，梁另一端可以有微小的转动，并且在温度变化时，可以自由伸缩，为了反映上述情况，梁采用一端为不动铰支座，另一端为可动铰支座的标准简支梁，如下图所示。梁的截面尺寸为b×h=250×500mm（自重为253/mkN）。qL0计算简图7YKBR36-62+1YKB36-527YKBR36-62+1YKB36-52attentiontoimprovingthequalityandefficiencyofdevelopmentandpaymoreattentiontosecurityandreformthepeople'slivelihood,morefocusonmaintainingsocialharmonyandstability,andpromotethedevelopmentoftownshipeconomyinabetterandfaster,createanewnormalXXdevelopmentandlayamoresolidfoundationforXXbuildawell-offsociety.Completedtasksthisyear,wemustalwayspayspecialattentiontotheprimarytaskofdevelopment.XXweakeconomicbase,lowlevelsofdevelopment,economicconstructionistheCenter,wehavetocreateconditionsforfastereconomicdevelopment,accumulatingmorewealth,betterpeople'slives.Effortshouldbemadetothisyear'seconomicgrowth,revenuegrowth,peoplehavemaintainedahighrateofincomegrowth,GDPgrowthofmorethan15percentrespectively.Alwaysgraspthefundamentalimpetusforreform.Wearenownosoldiersbehindmanyindicatorsrankedinthebottomofthecountyfromgettingbigger.Onlybygoingallouttohardwork,hardwork,innovation,reformdoesnotadapttoinstitutionalmechanisms,practices,itispossibletochangethefaceofXXpoor,intoawell-offsocietytogetherwithpeopleacrossthecountry.Wewanttobreaktheoldpatternsofthinking,methodsandorganizationofwork,bravelyandboldlyinto,makingfulluseofalltheadvantages,comprehensivereforms,tomakeallitsvitalityfordevelopmentimpulse,letfullplaytoallsourcesofwealthcreation.Shouldalwaysstability2（2）荷载计算1）恒载：30mm厚的水磨石2/66.02203.0mkN120mm厚预应力空心板2/0.2mkN板底刷20mm白灰砂浆2/34.01702.0mkN恒载设计值：2/504.32.1)34.0266.0(mkN2）活载设计值：2/8.24.12mkN3）梁上总的荷载设计值（线荷载）q梁的自重：mkN/75.32.1255.025.0mkNq/55.2475.33.3)8.2504.3(（3）内力计算mmln48602405100建筑结构2集中授课attentiontoimprovingthequalityandefficiencyofdevelopmentandpaymoreattentiontosecurityandreformthepeople'slivelihood,morefocusonmaintainingsocialharmonyandstability,andpromotethedevelopmentoftownshipeconomyinabetterandfaster,createanewnormalXXdevelopmentandlayamoresolidfoundationforXXbuildawell-offsociety.Completedtasksthisyear,wemustalwayspayspecialattentiontotheprimarytaskofdevelopment.XXweakeconomicbase,lowlevelsofdevelopment,economicconstructionistheCenter,wehavetocreateconditionsforfastereconomicdevelopment,accumulatingmorewealth,betterpeople'slives.Effortshouldbemadetothisyear'seconomicgrowth,revenuegrowth,peoplehavemaintainedahighrateofincomegrowth,GDPgrowthofmorethan15percentrespectively.Alwaysgraspthefundamentalimpetusforreform.Wearenownosoldiersbehindmanyindicatorsrankedinthebottomofthecountyfromgettingbigger.Onlybygoingallouttohardwork,hardwork,innovation,reformdoesnotadapttoinstitutionalmechanisms,practices,itispossibletochangethefaceofXXpoor,intoawell-offsocietytogetherwithpeopleacrossthecountry.Wewanttobreaktheoldpatternsofthinking,methodsandorganizationofwork,bravelyandboldlyinto,makingfulluseofalltheadvantages,comprehensivereforms,tomakeallitsvitalityfordevelopmentimpulse,letfullplaytoallsourcesofwealthcreation.Shouldalwaysstability3mmlmmallnn5103486005.105.1510024048600取mml51000跨中弯矩设计值mkNqlM82.791.555.248181220支座边缘处建立设计值mkNqlVn66.5986.455.242121（4）正截面承载力计算（计算系数）106.04602503.1411082.7926201bhfMcs518.0112.0106.0211211bs，满足要求20162.511360360/112.04602503.141/mmfbhfAycs防止少筋：%2.0%445.0)%46025062.511(min0bhAs，满足要求选配钢筋：受力筋4C14架立筋2C12（5）斜截面承载力计算1）复核梁截面尺寸484.1250460bhwkNVkNbhfcc66.5913.4114602503.14125.025.00，则截面尺寸足够2）验算是否需要按计算配置箍筋kNVkNbhft66.5912.11546025043.17.07.00，应按构造配置箍筋选配箍筋为双肢箍：2n，C6@300（213.28mmAsv）（6）L-1平面图和断面图attentiontoimprovingthequalityande