建筑結(jié)24課件講解

建筑結(jié)構(gòu)ArchitecturalStructures單向板肋梁樓蓋的荷載計算LoadCalculationofUnidirectionalSlabRibBeamFloor5.4樓板設(shè)計Beam-SlabDesign目錄

CONTENTS板的荷載計算LoadCalculationforSlabs1次梁的荷載計算LoadCalculationforSecondaryBeams2主梁的荷載計算LoadCalculationforMainBeams3板的荷載計算LoadCalculationforSlabsPARTONEColumnSecondaryBeamMainBeam板的荷載計算LoadCalculationforSlabs1m1m板的荷載計算Loadcalculationfor1mboard板的恒載Deadloadoftheslab板面活載Imposedloadontheslabsurface板的恒載標(biāo)準(zhǔn)值Deadloadstandardvalueforslab01板面構(gòu)造層：面磚、找平層等。Surfacelayercomposedoffacingbricks,levelinglayers,andsoon.板底構(gòu)造層：頂棚、抹灰等。Thebottomlayeroftheslabconsistsoffinisheslikeplasteringandceilingworks.鋼筋混凝土結(jié)構(gòu)層Reinforcedconcretestructurallayer板的荷載計算LoadCalculationforSlabs板的恒載標(biāo)準(zhǔn)值Deadloadstandardvalueforslab0130mm水泥砂漿層30mmlayerofcementmortar100mm鋼砼樓板100mmthickreinforcedconcreteslab20mm石灰砂漿抹灰層20mmlayeroflimeplaster

容重Density厚度Thickness板的荷載計算LoadCalculationforSlabs板的恒載標(biāo)準(zhǔn)值Deadloadstandardvalueforslab01序號SerialNumber名稱Name自重Self-weight1素混凝土（kN/m3）Plainconcrete（kN/m3）22~242鋼筋混凝土（kN/m3）Reinforcedconcrete（kN/m3）24~253水泥砂漿（kN/m3）Cementmortar（kN/m3）204石灰砂漿、混合砂漿（kN/m3）Limemortar、compositemortar（kN/m3）175漿砌普通磚（kN/m3）Mortarlaidcommonbrick（kN/m3）18

部分常用材料和構(gòu)件自重Self-weightofsomecommonlyusedmaterialsandcomponents30mm水泥砂漿層：30mmlayerofcementmortar

100mm鋼砼樓板：100mmthickreinforcedconcreteslab

20mm石灰砂漿抹灰層：20mmlayeroflimeplaster

合計Total板的荷載計算LoadCalculationforSlabs板的活載標(biāo)準(zhǔn)值Deadloadstandardvalueforslab02建筑結(jié)構(gòu)荷載規(guī)范LoadCodeforDesignofBuildingStructures板面活荷載Surfaceliveload板的荷載計算LoadCalculationforSlabs板的活載標(biāo)準(zhǔn)值Deadloadstandardvalueforslab022.02.02.02.0辦公室荷載標(biāo)準(zhǔn)值為2.0。Standardvalueforliveloadonofficefloorsis2.0kN/m2.板的荷載計算LoadCalculationforSlabs板的活載標(biāo)準(zhǔn)值Deadloadstandardvalueforslab02走廊為2.5。Corridors–2.5kN/m2.2.52.5板的荷載計算LoadCalculationforSlabs板的活載標(biāo)準(zhǔn)值Deadloadstandardvalueforslab02衛(wèi)生間為2.5，樓梯為3.5。Restrooms/toilets-2.5kN/m2,andstairs-3.5kN/m2.2.53.5板的荷載計算LoadCalculationforSlabs板的荷載設(shè)計值Deadloadstandardvalueforslab03恒載設(shè)計值Permanentload’sstandardvalue活載設(shè)計值Liveload’sstandardvalue

恒載分項系數(shù)Partialsafetyfactorforpermanentloads活載分項系數(shù)Partialsafetyfactorforliveloads板的荷載計算LoadCalculationforSlabs03適用情況ApplicableScenarios作用分項系數(shù)Actionpartialsafetyfactor當(dāng)作用效應(yīng)對承載力不利時Whentheactioneffectisadversetothebearingcapacity當(dāng)作用效應(yīng)對承載力有利時Whentheactioneffectisbeneficialtothebearingcapacity1.3≤1.01.3≤1.01.50表8.2.9建筑結(jié)構(gòu)的作用分項系數(shù)Table8.2.9SubentryCoefficientsforActionsinBuildingStructures板的荷載設(shè)計值Deadloadstandardvalueforslab板的荷載計算LoadCalculationforSlabs次梁的荷載計算LoadCalculationforSecondaryBeamsPARTTWO次梁的荷載計算LoadCalculationforSecondaryBeams01次梁恒荷載標(biāo)準(zhǔn)值Standardvalueofthepermanentloadonsecondarybeams板傳遞的恒載Deadloadtransmittedbytheslab次梁自重Self-weightofsecondarybeam梁側(cè)抹灰自重Self-weightofplasteronbeamsides已知：板的恒載標(biāo)準(zhǔn)值：Thepermanentloaddesignvalueoftheslabhasknown:

板厚80mm次梁尺寸h×b=500×200SlabthicknessThesecondarybeamdimensions板傳遞的恒荷載：Deadloadtransmittedbytheslab：

次梁的計算單元寬度Calculationunitwidthofsecondarybeams次梁的荷載計算LoadCalculationforSecondaryBeamsb=200h=500h-板厚Thethickness

次梁自重Self-weightofsecondarybeam

次梁的荷載計算LoadCalculationforSecondaryBeams已知：梁側(cè)抹灰厚度為15mm。Giventheplasterthicknessonbothsidesofthebeamis15mm.b=200h=500h-板厚Thethickness序號SerialNumber名稱Name自重Self-weight4石灰砂漿、混合砂漿（kN/m3）LimeMortar、compositeMortar（kN/m3）17梁側(cè)抹灰恒荷載=一條抹灰截面面積×容重×2Theconstantloadforthebeamsideplasteringiscalculatedas:thecross-sectionalareaofoneplasterstrip×density×2.次梁的荷載計算LoadCalculationforSecondaryBeams合計Total：

梁側(cè)抹灰Plasteronbeamsides

b=200h=500h-板厚Thethickness一條抹灰截面面積Thecross-sectionalareaofoneplasterstrip已知：梁側(cè)抹灰厚度為15mm。Giventheplasterthicknessonbothsidesofthebeamis15mm.次梁的荷載計算LoadCalculationforSecondaryBeams02次梁活荷載標(biāo)準(zhǔn)值Thestandardvalueoftheliveloadonsecondarybeams已知板的恒載標(biāo)準(zhǔn)值qk=4kN/m2，板厚80mm，次梁h×b=500×200，梁側(cè)抹灰厚度為15mm。Theknowndeadloadstandardvalueoftheslabisqk=4kN/m2,withaslabthicknessof80mm.Thesecondarybeamdimensionsareh×b=500mm×200mm,andthethicknessoftheplasteronthebeamsideis15mm.活載標(biāo)準(zhǔn)值Standardvalueoftheliveload

次梁的計算單元寬度Calculationunitwidthofsecondarybeams次梁的荷載計算LoadCalculationforSecondaryBeams03次梁荷載設(shè)計值Designloadvalueofthesecondarybeam

次梁恒載設(shè)計值Deadstandardvalueonsecondarybeams次梁活載設(shè)計值Livestandardvalueonsecondarybeams

恒載分項系數(shù)Partialsafetyfactorforpermanentloads活載分項系數(shù)Partialsafetyfactorforliveloads次梁的荷載計算LoadCalculationforSecondaryBeams主梁的荷載計算LoadCalculationforMainBeamsPARTTHREE主梁的荷載計算LoadCalculationforMainBeams01主梁恒載標(biāo)準(zhǔn)值Standardvalueofthepermanentloadonmainbeams柱Column次梁Secondarybeam板Slab主梁Mainbeam主梁自重按集中荷載考慮Self-weightofthemainbeamisconsideredasaconcentratedload01主梁恒載標(biāo)準(zhǔn)值Standardvalueofthepermanentloadonmainbeams次梁傳遞的恒載Deadloadtransmittedbysecondarybeams主梁自重Self-weightofthemainbeam梁側(cè)抹灰Plasteringonbothsides

主梁的荷載計算LoadCalculationforMainBeams01主梁恒載標(biāo)準(zhǔn)值Standardvalueofthepermanentloadonmainbeams

等效簡化Equivalentsimplification主梁自重按集中荷載考慮Self-weightofthemainbeamisconsideredasaconcentratedload

主梁的荷載計算LoadCalculationforMainBeams已知：次梁的恒載標(biāo)準(zhǔn)值：Withthestandardvalueofthepermanentloadonthesecondarybeamknown:

次梁傳遞的恒荷載Deadloadtransmittedbysecondarybeams主梁間距Spacingofthemainbeam主梁的荷載計算LoadCalculationforMainBeamsb=250h=500h-板厚Thethickness板厚80mm，主梁h×b=650×250。Slabthicknessis80mm,andthemainbeam’scross-sectionish×b=650mm×250mm.自重：γ·V=容重×體積Self-weight:γ·V=bulkdensity×volume主梁的荷載計算LoadCalculationforMainBeams板厚80mm，主梁h×b=650×250。Slabthicknessis80mm,andthemainbeam’scross-sectionish×b=650mm×250mm.主梁自重Theself-weightofthemainbeam

截面面積Cross-sectionalarea容重Bulkdensity次梁間距Thespacingofthesecondarybeam自重：γ·V=容重×體積Self-weight:γ·V=bulkdensity×volume主梁的荷載計算LoadCalculationforMainBeams板厚80mm，主梁h×b=650×250，梁側(cè)抹灰厚度為15mm。Slabthicknessis80mm,andthemainbeam’scross-sectionish×b=650mm×250mm，withathicknessof15mmforthesideplastering.b=250h=500h-板厚Thethickness主梁：集中力Mainbeam:concentratedforce

主梁的荷載計算LoadCalculationforMainBeams板厚80mm，主梁h×b=650×250，梁側(cè)抹灰厚度為15mm。Slabthicknessis80mm,andthemainbeam’scross-sectionish×b=650mm×250mm，withathicknessof15mmforthesideplastering.梁側(cè)抹灰Plasteringonbothsides

一條抹灰截面面積Asectionareaofplastering次梁間距Spacingofthesecondarybeam2條抹灰Twolayersofplastering主梁的荷載計算LoadCalculationforMainBeams

次梁傳遞的恒荷載Deadloadtransmittedbysecondarybeams主梁自重Self-weightofthemainbeam

梁側(cè)抹灰Plasteringonbothsides

合計Total:

主梁的荷載計算LoadCalculationforMainBeams02主梁活載標(biāo)準(zhǔn)值Standardvalueoftheliveloadonmainbeams已知：次梁的活載標(biāo)準(zhǔn)值：Giventhattheliveloadstandardvalueofthesecondarybeamis:

活載標(biāo)準(zhǔn)值Standardvalueoftheliveload

主梁計算單元寬度Calculationunitwidthofmainbeams主梁的荷載計算LoadCalculationforMainBeams02主梁活載標(biāo)準(zhǔn)值Standardvalueoftheliveloadonmainbeams主梁荷載設(shè)計值Loaddesignvalueforthemainbeam

主梁的荷載計算LoadCalculationforMainBeams板、次梁、主梁自重計算Self-weightcalculationofslabs,secondarybeams,andmainbeams板：面分布力Slab:areadistributedforce

次梁：線分布力Secondarybeam:lineardistributedforce

主梁：集中力Mainbeam:concentratedforce

板厚Slabthicknessb×（h-板厚）b×（h-

Slabthickness）b×（h-板厚）×次梁間距b×（h-Slabthickness）×Thespacingofthesecondarybeam總結(jié)

Summary主次梁兩側(cè)的抹灰Plasteringonbothsidesofmainandseconda