建筑结24课件讲解

建筑结构ArchitecturalStructures单向板肋梁楼盖的荷载计算LoadCalculationofUnidirectionalSlabRibBeamFloor5.4楼板设计Beam-SlabDesign目录

CONTENTS板的荷载计算LoadCalculationforSlabs1次梁的荷载计算LoadCalculationforSecondaryBeams2主梁的荷载计算LoadCalculationforMainBeams3板的荷载计算LoadCalculationforSlabsPARTONEColumnSecondaryBeamMainBeam板的荷载计算LoadCalculationforSlabs1m1m板的荷载计算Loadcalculationfor1mboard板的恒载Deadloadoftheslab板面活载Imposedloadontheslabsurface板的恒载标准值Deadloadstandardvalueforslab01板面构造层：面砖、找平层等。Surfacelayercomposedoffacingbricks,levelinglayers,andsoon.板底构造层：顶棚、抹灰等。Thebottomlayeroftheslabconsistsoffinisheslikeplasteringandceilingworks.钢筋混凝土结构层Reinforcedconcretestructurallayer板的荷载计算LoadCalculationforSlabs板的恒载标准值Deadloadstandardvalueforslab0130mm水泥砂浆层30mmlayerofcementmortar100mm钢砼楼板100mmthickreinforcedconcreteslab20mm石灰砂浆抹灰层20mmlayeroflimeplaster

容重Density厚度Thickness板的荷载计算LoadCalculationforSlabs板的恒载标准值Deadloadstandardvalueforslab01序号SerialNumber名称Name自重Self-weight1素混凝土（kN/m³）Plainconcrete（kN/m³）22~242钢筋混凝土（kN/m³）Reinforcedconcrete（kN/m³）24~253水泥砂浆（kN/m³）Cementmortar（kN/m³）204石灰砂浆、混合砂浆（kN/m³）Limemortar、compositemortar（kN/m³）175浆砌普通砖（kN/m³）Mortarlaidcommonbrick（kN/m³）18

部分常用材料和构件自重Self-weightofsomecommonlyusedmaterialsandcomponents30mm水泥砂浆层：30mmlayerofcementmortar

100mm钢砼楼板：100mmthickreinforcedconcreteslab

20mm石灰砂浆抹灰层：20mmlayeroflimeplaster

合计Total板的荷载计算LoadCalculationforSlabs板的活载标准值Deadloadstandardvalueforslab02建筑结构荷载规范LoadCodeforDesignofBuildingStructures板面活荷载Surfaceliveload板的荷载计算LoadCalculationforSlabs板的活载标准值Deadloadstandardvalueforslab022.02.02.02.0办公室荷载标准值为2.0。Standardvalueforliveloadonofficefloorsis2.0kN/m².板的荷载计算LoadCalculationforSlabs板的活载标准值Deadloadstandardvalueforslab02走廊为2.5。Corridors–2.5kN/m².2.52.5板的荷载计算LoadCalculationforSlabs板的活载标准值Deadloadstandardvalueforslab02卫生间为2.5，楼梯为3.5。Restrooms/toilets-2.5kN/m²,andstairs-3.5kN/m².2.53.5板的荷载计算LoadCalculationforSlabs板的荷载设计值Deadloadstandardvalueforslab03恒载设计值Permanentload’sstandardvalue活载设计值Liveload’sstandardvalue

恒载分项系数Partialsafetyfactorforpermanentloads活载分项系数Partialsafetyfactorforliveloads板的荷载计算LoadCalculationforSlabs03适用情况ApplicableScenarios作用分项系数Actionpartialsafetyfactor当作用效应对承载力不利时Whentheactioneffectisadversetothebearingcapacity当作用效应对承载力有利时Whentheactioneffectisbeneficialtothebearingcapacity1.3≤1.01.3≤1.01.50表8.2.9建筑结构的作用分项系数Table8.2.9SubentryCoefficientsforActionsinBuildingStructures板的荷载设计值Deadloadstandardvalueforslab板的荷载计算LoadCalculationforSlabs次梁的荷载计算LoadCalculationforSecondaryBeamsPARTTWO次梁的荷载计算LoadCalculationforSecondaryBeams01次梁恒荷载标准值Standardvalueofthepermanentloadonsecondarybeams板传递的恒载Deadloadtransmittedbytheslab次梁自重Self-weightofsecondarybeam梁侧抹灰自重Self-weightofplasteronbeamsides已知：板的恒载标准值：Thepermanentloaddesignvalueoftheslabhasknown:

板厚80mm次梁尺寸h×b=500×200SlabthicknessThesecondarybeamdimensions板传递的恒荷载：Deadloadtransmittedbytheslab：

次梁的计算单元宽度Calculationunitwidthofsecondarybeams次梁的荷载计算LoadCalculationforSecondaryBeamsb=200h=500h-板厚Thethickness

次梁自重Self-weightofsecondarybeam

次梁的荷载计算LoadCalculationforSecondaryBeams已知：梁侧抹灰厚度为15mm。Giventheplasterthicknessonbothsidesofthebeamis15mm.b=200h=500h-板厚Thethickness序号SerialNumber名称Name自重Self-weight4石灰砂浆、混合砂浆（kN/m³）LimeMortar、compositeMortar（kN/m³）17梁侧抹灰恒荷载=一条抹灰截面面积×容重×2Theconstantloadforthebeamsideplasteringiscalculatedas:thecross-sectionalareaofoneplasterstrip×density×2.次梁的荷载计算LoadCalculationforSecondaryBeams合计Total：

梁侧抹灰Plasteronbeamsides

b=200h=500h-板厚Thethickness一条抹灰截面面积Thecross-sectionalareaofoneplasterstrip已知：梁侧抹灰厚度为15mm。Giventheplasterthicknessonbothsidesofthebeamis15mm.次梁的荷载计算LoadCalculationforSecondaryBeams02次梁活荷载标准值Thestandardvalueoftheliveloadonsecondarybeams已知板的恒载标准值qk=4kN/m2，板厚80mm，次梁h×b=500×200，梁侧抹灰厚度为15mm。Theknowndeadloadstandardvalueoftheslabisqk=4kN/m²,withaslabthicknessof80mm.Thesecondarybeamdimensionsareh×b=500mm×200mm,andthethicknessoftheplasteronthebeamsideis15mm.活载标准值Standardvalueoftheliveload

次梁的计算单元宽度Calculationunitwidthofsecondarybeams次梁的荷载计算LoadCalculationforSecondaryBeams03次梁荷载设计值Designloadvalueofthesecondarybeam

次梁恒载设计值Deadstandardvalueonsecondarybeams次梁活载设计值Livestandardvalueonsecondarybeams

恒载分项系数Partialsafetyfactorforpermanentloads活载分项系数Partialsafetyfactorforliveloads次梁的荷载计算LoadCalculationforSecondaryBeams主梁的荷载计算LoadCalculationforMainBeamsPARTTHREE主梁的荷载计算LoadCalculationforMainBeams01主梁恒载标准值Standardvalueofthepermanentloadonmainbeams柱Column次梁Secondarybeam板Slab主梁Mainbeam主梁自重按集中荷载考虑Self-weightofthemainbeamisconsideredasaconcentratedload01主梁恒载标准值Standardvalueofthepermanentloadonmainbeams次梁传递的恒载Deadloadtransmittedbysecondarybeams主梁自重Self-weightofthemainbeam梁侧抹灰Plasteringonbothsides

主梁的荷载计算LoadCalculationforMainBeams01主梁恒载标准值Standardvalueofthepermanentloadonmainbeams

等效简化Equivalentsimplification主梁自重按集中荷载考虑Self-weightofthemainbeamisconsideredasaconcentratedload

主梁的荷载计算LoadCalculationforMainBeams已知：次梁的恒载标准值：Withthestandardvalueofthepermanentloadonthesecondarybeamknown:

次梁传递的恒荷载Deadloadtransmittedbysecondarybeams主梁间距Spacingofthemainbeam主梁的荷载计算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×体积Self-weight:γ·V=bulkdensity×volume主梁的荷载计算LoadCalculationforMainBeams板厚80mm，主梁h×b=650×250。Slabthicknessis80mm,andthemainbeam’scross-sectionish×b=650mm×250mm.主梁自重Theself-weightofthemainbeam

截面面积Cross-sectionalarea容重Bulkdensity次梁间距Thespacingofthesecondarybeam自重：γ·V=容重×体积Self-weight:γ·V=bulkdensity×volume主梁的荷载计算LoadCalculationforMainBeams板厚80mm，主梁h×b=650×250，梁侧抹灰厚度为15mm。Slabthicknessis80mm,andthemainbeam’scross-sectionish×b=650mm×250mm，withathicknessof15mmforthesideplastering.b=250h=500h-板厚Thethickness主梁：集中力Mainbeam:concentratedforce

主梁的荷载计算LoadCalculationforMainBeams板厚80mm，主梁h×b=650×250，梁侧抹灰厚度为15mm。Slabthicknessis80mm,andthemainbeam’scross-sectionish×b=650mm×250mm，withathicknessof15mmforthesideplastering.梁侧抹灰Plasteringonbothsides

一条抹灰截面面积Asectionareaofplastering次梁间距Spacingofthesecondarybeam2条抹灰Twolayersofplastering主梁的荷载计算LoadCalculationforMainBeams

次梁传递的恒荷载Deadloadtransmittedbysecondarybeams主梁自重Self-weightofthemainbeam

梁侧抹灰Plasteringonbothsides

合计Total:

主梁的荷载计算LoadCalculationforMainBeams02主梁活载标准值Standardvalueoftheliveloadonmainbeams已知：次梁的活载标准值：Giventhattheliveloadstandardvalueofthesecondarybeamis:

活载标准值Standardvalueoftheliveload

主梁计算单元宽度Calculationunitwidthofmainbeams主梁的荷载计算LoadCalculationforMainBeams02主梁活载标准值Standardvalueoftheliveloadonmainbeams主梁荷载设计值Loaddesignvalueforthemainbeam

主梁的荷载计算LoadCalculationforMainBeams板、次梁、主梁自重计算Self-weightcalculationofslabs,secondarybeams,andmainbeams板：面分布力Slab:areadistributedforce

次梁：线分布力Secondarybeam:lineardistributedforce

主梁：集中力Mainbeam:concentratedforce

板厚Slabthicknessb×（h-板厚）b×（h-

Slabthickness）b×（h-板厚）×次梁间距b×（h-Slabthickness）×Thespacingofthesecondarybeam总结

Summary主次梁两侧的抹灰Plasteringonbothsidesofmainandseconda