《桥梁工程》梁式桥和板式桥设计课件

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1、第二篇钢筋混凝土和预应力混凝土梁式桥Part2RC&PCbeambridge第一章Chapter1梁式桥概述IntroductionofthebeambridgeBRIDGEENGRGPARTIIChapter1梁式桥概述Introductionofthebeambridge1.1Classification类型的划分（1）按承重结构的静力体系划分Classificationbasedonthestructuralsystem简支梁桥Simplesupportedbeam连续梁桥bridgeContinuousb

2、eambridge悬臂梁桥CantileverbeambridgeDevelopmentonthestructure结构体系的演变简支梁SimplesupportedbeamSpanincreasing跨度增加qlql2/8ql2/8ql2/8连续梁Continuousbeam悬臂梁Cantileverbeam1.1Classification类型的划分（1）按承重结构的静力体系划分Classificationbasedonthestructuralsystem（2）按承重结构的截面形式划分Classificati

3、onbasedonthestructuralsection板桥肋板式梁桥箱形梁桥Chapter1梁式桥概述Introductionofthebeambridge截面形式的演变Evolutionofthesection实心板Solidslab肋板Slabwithribs空心板SlabwithhollowT形梁Tbeam箱梁BoxgirderSpanincreasing跨度增加Chapter1梁式桥概述IntroductionofthebeambridgeChapter2第二章梁式桥设计要点与构造Outlineonth

4、edesignandconstructofbeambridgePart2RC&PCbeambridge第二篇钢筋混凝土和预应力混凝土梁式桥BRIDGEENGRGPARTII1.1简支体系Simple-supportedstructure1.1.1简支板桥Simple-supportedslabbridge建筑高度小Height外形简单，施工安装简便Form跨径不宜过大Span种类Type跨径（m）Span板厚（m）Thickness实心板SolidRC≤8m0.16~0.36装配式空心板HollowslabRC

5、6~130.4~0.8PC8~160.4~0.7简支板的构造尺寸DimensionofSimple-supportedslab1梁式桥的立面布置Elevationarrangementforbeambridge1.1.简支体系Simple-supportedstructure1.1.2简支梁桥Simple-supportedbeambridgeType种类Span跨径l（m）Height梁高（m）Prefabricated装配式RC8~20(1/11~1/18)lPC20~40(1/15~1/25)l简支梁的构造尺

6、寸DimensionofSimple-supportedbeam1梁式桥的立面布置ElevationarrangementforbeambridgeRCSpan(m)10131620Height(m)0.8~0.90.9~1.01.0~1.11.0~1.3PCSpan(m)25303540Height(m)1.25~1.451.65~1.752.02.3Standarddimensionofsimple-supportedbeam标准图简支梁的构造尺寸1.1.Simple-supportedstructure简支体

7、系1.1.2Simple-supportedbeambridge简支梁桥1梁式桥的立面布置Elevationarrangementforbeambridge1.2cantileverbeamsystem悬臂体系1.2.1RCcantileverbeambridge钢筋混凝土悬臂梁桥TsectionT形截面h=(1/12~1/20)lH=(1.0~1.5)hBoxgirder箱形截面h=(1/20~1/35)lH=(1.0~1.5)hSinglespanwithtwocantilevers单孔双悬臂梁桥Tsectio

8、nT形截面lx=(0.3~0.4)lBoxgirder箱形截面lx=(0.4~0.6)lHhllxlx1梁式桥的立面布置Elevationarrangementforbeambridge1.2Cantileverbeamsystem悬臂体系ThreespanwithcantileversandahangBeam三跨带挂梁单悬臂梁桥l1=(0.6~0.8)ll