桥梁工程第篇A梁式桥和板式桥设计学习教案.pptx

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1、会计学1桥梁工程第篇桥梁工程第篇A梁式桥和板式梁式桥和板式(bnsh)桥桥设计设计第一页，共70页。Development on the structure Development on the structure 结构体系结构体系结构体系结构体系(tx)(tx)的演变的演变的演变的演变Simple supported beam简支梁Span increasing 跨度(kud)增加qlql2/8ql2/8ql2/8SCHOOL OF TRANSPORTATION,WUT PRODUCED BY：X J CHENContinuous beam 连续连续(linx)梁梁Cantilever be

2、am悬臂梁第1页/共70页第二页，共70页。1.1 Classification 1.1 Classification 类型类型类型类型(lixng)(lixng)的划分的划分的划分的划分（1）Classification based on the structural system 按承重结构的静力体系划分(hu fn)（2）Classification based on the structural section 按承重结构的截面形式划分(hu fn)n板桥n肋板式(bnsh)梁桥n箱形梁桥SCHOOL OF TRANSPORTATION,WUT PRODUCED BY：X J CHEN

3、Chapter 1 Introduction of the beam bridge 梁式桥概述第2页/共70页第三页，共70页。Evolution of the section Evolution of the section 截面形式截面形式截面形式截面形式(xngsh)(xngsh)的演变的演变的演变的演变Solid slab实实心心(shxn)板板Slab with ribs肋板Slab with hollow空心空心(kng xn)板板T beamT形梁Box girder箱梁Span increasing 跨度增加SCHOOL OF TRANSPORTATION,WUT PRODUC

4、ED BY：X J CHENChapter 1 Introduction of the beam bridge 梁式桥概述第3页/共70页第四页，共70页。武汉理工大学交通(jiotng)学院 制作：陈小佳Chapter 2 第二章 Outline on the design and construct of beam bridge 梁式桥设计(shj)要点与构造Part 2 RC&PC beam bridge第二篇第二篇 钢筋钢筋(gngjn)混凝土和预应力混混凝土和预应力混凝土梁式桥凝土梁式桥BRIDGE ENGRGPART II第4页/共70页第五页，共70页。1 Elevation a

5、rrangement for beam bridge 梁式桥的立面布置(bzh)1.1 Simple-supported structure 1.1 Simple-supported structure 简支体系简支体系简支体系简支体系(t(t x)x)1.1.1 Simple-supported slab bridge 简支板桥Height 建筑高度小Form 外形简单，施工(sh gng)安装简便Span 跨径不宜过大Type 种 类Span 跨径（m）Thickness 板厚（m）Solid 实心板RC8m0.160.36Hollow slab 装配式空心板RC6130.40.8PC81

6、60.40.7Dimension of Simple-supported slab 简支板的构造尺寸 SCHOOL OF TRANSPORTATION,WUT PRODUCED BY：X J CHEN第5页/共70页第六页，共70页。1.1.Simple-supported structure 1.1.Simple-supported structure 1.1.Simple-supported structure 1.1.Simple-supported structure 简支体系简支体系简支体系简支体系(tx)(tx)(tx)(tx)1.1.2 Simple-supported beam

7、 bridge 简支梁桥Type 种 类Span 跨径 l（m）Height梁高（m）Prefabricated 装配式RC 820(1/111/18)lPC2040(1/151/25)lDimension of Simple-supported beam简支梁的构造简支梁的构造(guzo)尺寸尺寸 SCHOOL OF TRANSPORTATION,WUT PRODUCED BY：X J CHEN1 Elevation arrangement for beam bridge 梁式桥的立面布置(bzh)第6页/共70页第七页，共70页。RCSpan(m)10131620Height(m)0.80

8、.90.91.01.01.11.01.3PCSpan(m)25303540Height(m)1.251.451.651.752.02.3Standard dimension of simple-supported beam 标准图简支梁的构造标准图简支梁的构造(guzo)尺寸尺寸 SCHOOL OF TRANSPORTATION,WUT PRODUCED BY：X J CHEN1.1.Simple-supported structure 1.1.Simple-supported structure 简支体系简支体系简支体系简支体系(t(t x)x)1.1.2 Simple-supported

9、beam bridge 简支梁桥1 Elevation arrangement for beam bridge 梁式桥的立面布置(bzh)第7页/共70页第八页，共70页。1.2 cantilever beam system 1.2 cantilever beam system 悬臂悬臂悬臂悬臂(xunb)(xunb)体系体系体系体系1.2.1 RC cantilever beam bridge 钢筋(gngjn)混凝土悬臂梁桥T section T形截面h=(1/121/20)lH=(1.01.5)hBox girder箱形截面h=(1/201/35)lH=(1.01.5)hnSingle

10、span with two cantileversn单孔双悬臂梁桥单孔双悬臂梁桥nT section T形截面形截面(jimin)nlx=(0.30.4)lnBox girder 箱形截面箱形截面(jimin)nlx=(0.40.6)lHhllxlxSCHOOL OF TRANSPORTATION,WUT PRODUCED BY：X J CHEN1 Elevation arrangement for beam bridge 梁式桥的立面布置第8页/共70页第九页，共70页。1.2 Cantilever beam system 1.2 Cantilever beam system 悬臂悬臂悬臂悬

11、臂(xunb)(xunb)体系体系体系体系nThree span with cantilevers and a hang Beamn三跨带挂梁单悬臂梁桥l1=(0.60.8)llg=(0.40.6)lh=(1/121/20)lgH=(1.51.8)hHhll1l1lgSCHOOL OF TRANSPORTATION,WUT PRODUCED BY：X J CHEN1.2.1 RC cantilever beam bridge 钢筋(gngjn)混凝土悬臂梁桥1 Elevation arrangement for beam bridge 梁式桥的立面布置(bzh)第9页/共70页第十页，共70页

12、。1.2 Cantilever beam system 1.2 Cantilever beam system 1.2 Cantilever beam system 1.2 Cantilever beam system 悬臂悬臂悬臂悬臂(xunb)(xunb)(xunb)(xunb)体体体体系系系系nMulti-span with double cantilevers and hang beams 多跨带挂梁双悬臂梁桥l1=(0.750.8)llg=(0.50.6)lll1lgHhllgSCHOOL OF TRANSPORTATION,WUT PRODUCED BY：X J CHEN1 Elev

13、ation arrangement for beam bridge 梁式桥的立面布置(bzh)1.2.1 RC cantilever beam bridge 钢筋(gngjn)混凝土悬臂梁桥 T section T形梁 Box girder 箱形梁h=(1/121/20)l h=(1/121/20)l H=(1.51.8)h H=(1.01.5)h第10页/共70页第十一页，共70页。1.2 Cantilever beam system 1.2 Cantilever beam system 1.2 Cantilever beam system 1.2 Cantilever beam syste

14、m 悬臂悬臂悬臂悬臂(xunb)(xunb)(xunb)(xunb)体系体系体系体系1.2.2 PC cantilever beam bridge 预应力混凝土悬臂梁桥PC cantilever beam bridge is more suitable for large span of more than 50m 跨度超过跨度超过50m以上以上(yshng)，采用预应力混凝土悬臂梁桥更合理。，采用预应力混凝土悬臂梁桥更合理。l1=(0.50.8)l h=(1/201/25)l lg=(0.20.4)l H=(1.01.5)hll1lgHhllgSCHOOL OF TRANSPORTATION

15、,WUT PRODUCED BY：X J CHEN1 Elevation arrangement for beam bridge 梁式桥的立面布置(bzh)第11页/共70页第十二页，共70页。1.2 Cantilever beam system 1.2 Cantilever beam system 1.2 Cantilever beam system 1.2 Cantilever beam system 悬臂悬臂悬臂悬臂(xunb)(xunb)(xunb)(xunb)体系体系体系体系 由于施工阶段的受力与结构使用状态下的受力的一致性，T形刚构桥常是经济的方案。全桥的T形单元尺寸尽可能相同，以

16、简化设计与施工；T形刚构的布置应尽可能对称(duchn)，以避免T形刚构的桥墩承受不平衡弯矩。SCHOOL OF TRANSPORTATION,WUT PRODUCED BY：X J CHEN1 Elevation arrangement for beam bridge 梁式桥的立面布置(bzh)1.2.3 PC rigid-frame bridge 预应力混凝土T形刚构桥第12页/共70页第十三页，共70页。1.2 Cantilever beam system 1.2 Cantilever beam system 1.2 Cantilever beam system 1.2 Cantilev

17、er beam system 悬臂悬臂悬臂悬臂(xunb)(xunb)(xunb)(xunb)体体体体系系系系Structural arrangement of rigid-frame刚构的布置(bzh)形式：SCHOOL OF TRANSPORTATION,WUT PRODUCED BY：X J CHEN1 Elevation arrangement for beam bridge 梁式桥的立面布置(bzh)1.2.3 PC rigid-frame bridge 预应力混凝土T形刚构桥第13页/共70页第十四页，共70页。1.2 Cantilever beam system1.2 Canti

18、lever beam system1.2 Cantilever beam system1.2 Cantilever beam system悬臂悬臂悬臂悬臂(xunb)(xunb)(xunb)(xunb)体系体系体系体系T形刚构支点(zhdin)、跨中梁高与跨径的关系：带铰T形刚构 l100m H=(1/141/22)l h=(0.200.4)H 且h 1.0m 带挂梁T形刚构l100m H=(1/171/21)l h=(0.200.4)H 且h 1.5mSCHOOL OF TRANSPORTATION,WUT PRODUCED BY：X J CHEN1 Elevation arrangemen

19、t for beam bridge 梁式桥的立面布置(bzh)1.2.3 PC rigid-frame bridge 预应力混凝土T形刚构桥第14页/共70页第十五页，共70页。1.3 Continuous beam system 1.3 Continuous beam system 1.3 Continuous beam system 1.3 Continuous beam system 连续连续连续连续(linx)(linx)(linx)(linx)体系体系体系体系nMid-span 中间(zhngjin)跨 l=8 14m nSide-span 边跨（0.70.8）l nHeight o

20、n mid-span section跨中截面高 h=(1/181/30)lnHeight on supported section支点截面高 H=(1.21.5)h1.3.1 Continuous slab bridge 连续(linx)板桥 SCHOOL OF TRANSPORTATION,WUT PRODUCED BY：X J CHEN1 Elevation arrangement for beam bridge 梁式桥的立面布置第15页/共70页第十六页，共70页。1.3 Continuous beam system 1.3 Continuous beam system 1.3 Cont

21、inuous beam system 1.3 Continuous beam system 连续连续连续连续(linx)(linx)(linx)(linx)体系体系体系体系不等跨变截面连续(linx)梁布置（以三跨为例）边跨（0.60.8）l 支架施工可取0.8l 悬臂施工可取 0.65l折线形变截面 支点截面高 H=(1/161/20)l，跨中截面高 h=(1/221/28)l曲线形变截面支点截面高 H=(1/161/20)l，跨中截面高 h=(1/301/50)l等跨等截面连续(linx)梁布置截面高 h =(1/151/30)l，常用 h=(1/181/20)l1.1.1 Continu

22、ous beam bridge连续(linx)梁桥SCHOOL OF TRANSPORTATION,WUT PRODUCED BY：X J CHEN1 Elevation arrangement for beam bridge 梁式桥的立面布置第16页/共70页第十七页，共70页。2 design and construct of the slab bridge 板板桥桥(bn qio)的设计与构造的设计与构造2.1 form of the simple-supported slab bridge2.1 form of the simple-supported slab bridge2.1 f

23、orm of the simple-supported slab bridge2.1 form of the simple-supported slab bridge 简支板桥简支板桥简支板桥简支板桥(bn qio)(bn qio)(bn qio)(bn qio)的构造的构造的构造的构造Section of slab 板桥(bn qio)的截面形式 Solid实心板Irregular shape 异形板Integral 整体式Assemble 装配式Solid实心板Hollow 空心板第17页/共70页第十八页，共70页。(1)Reinforcement detail 配筋构造：主筋不小于 1

24、2mm720cm 且两侧边缘板带的主钢筋(gngjn)数量，宜较中间2/3板宽范围内板带增加15%分布筋不小于 6 mm25cm保护层厚度不小于2cm深入支点的主筋总量不少于跨中主筋总量的1/4，且间距不少于每米3根 2.1.1 Cast-in-site slab bridge 2.1.1 Cast-in-site slab bridge 2.1.1 Cast-in-site slab bridge 2.1.1 Cast-in-site slab bridge 整体式板桥整体式板桥整体式板桥整体式板桥(bn qio)(bn qio)(bn qio)(bn qio)SCHOOL OF TRANS

25、PORTATION,WUT PRODUCED BY：X J CHEN2.1 Construct of the simple-supported slab bridge 简简支支板板桥桥(bn qio)的构造的构造第18页/共70页第十九页，共70页。2.1.1 Cast-in-site slab bridge 2.1.1 Cast-in-site slab bridge 2.1.1 Cast-in-site slab bridge 2.1.1 Cast-in-site slab bridge 整体式板桥整体式板桥整体式板桥整体式板桥(bn(bn(bn(bn qio)qio)qio)qio)（2

26、）A case 实例 标准跨径6m，桥面(qio min)净宽-7m+2x0.2m,汽车-20级，挂车-100SCHOOL OF TRANSPORTATION,WUT PRODUCED BY：X J CHEN2.1 Construct of the simple-supported slab bridge 简简支支板板桥桥(bn qio)的构造的构造第19页/共70页第二十页，共70页。2.1.2 Construction of the prefabricated slab 2.1.2 Construction of the prefabricated slab 2.1.2 Construct

27、ion of the prefabricated slab 2.1.2 Construction of the prefabricated slab 装配式板桥装配式板桥装配式板桥装配式板桥(bn qio)(bn qio)(bn qio)(bn qio)的构造的构造的构造的构造装配式板桥(bn qio)分实心板和空心板标准图实心铰接板跨径为：1.5m、1.0m，1.5m，2.0m，3.0m，4.0m，6.0m和8.0m 桥面净宽按照老规范有净-7和净-9两种。SCHOOL OF TRANSPORTATION,WUT PRODUCED BY：X J CHEN2.1 Construct of th

28、e simple-supported slab bridge 简简支支板板桥桥(bn qio)的构造的构造第20页/共70页第二十一页，共70页。2.1 简支板桥(bn qio)的构造 2.1.2 Construction of the prefabricated slab 2.1.2 Construction of the prefabricated slab 2.1.2 Construction of the prefabricated slab 2.1.2 Construction of the prefabricated slab装配式板桥装配式板桥装配式板桥装配式板桥(bn qio)

29、(bn qio)(bn qio)(bn qio)的构造的构造的构造的构造 标准图实心(shxn)铰接板实例 SCHOOL OF TRANSPORTATION,WUT PRODUCED BY：X J CHEN第21页/共70页第二十二页，共70页。2.1 Construct of the simple-supported slab bridge 简简支支板板桥桥(bn qio)的的构构造造2.1.2 Construction of the prefabricated slab2.1.2 Construction of the prefabricated slab2.1.2 Constructio

30、n of the prefabricated slab2.1.2 Construction of the prefabricated slab装配式板桥装配式板桥装配式板桥装配式板桥(bn qio)(bn qio)(bn qio)(bn qio)的的的的构造构造构造构造Transverse connection 装配式板桥的横向装配式板桥的横向(hn xin)联接联接企口混凝土铰连接企口混凝土铰连接钢板连接钢板连接 企口混凝土铰连接 钢板连接 SCHOOL OF TRANSPORTATION,WUT PRODUCED BY：X J CHEN第22页/共70页第二十三页，共70页。2.1.1 S

31、tatic characteristic of the skew bridge2.1.1 Static characteristic of the skew bridge2.1.1 Static characteristic of the skew bridge2.1.1 Static characteristic of the skew bridge斜交斜交斜交斜交(xi jio)(xi jio)(xi jio)(xi jio)板桥的受力特点板桥的受力特点板桥的受力特点板桥的受力特点力的传递(chund)规律 正交简支板 斜交(xi jio)简支板 SCHOOL OF TRANSPORTAT

32、ION,WUT PRODUCED BY：X J CHEN2.2 Features of the skew bridge 斜交板桥的特点第23页/共70页第二十四页，共70页。2.1.1 Static characteristic of the skew bridge 2.1.1 Static characteristic of the skew bridge 2.1.1 Static characteristic of the skew bridge 2.1.1 Static characteristic of the skew bridge 斜交板桥斜交板桥斜交板桥斜交板桥(bn qio)(

33、bn qio)(bn qio)(bn qio)的受的受的受的受力特点力特点力特点力特点受力特点(tdin)斜跨径l的简支斜板的纵向(zn xin)主弯矩比同宽、跨径l 的正交简支板之值小，并随斜交角的增大而减小；bb在与钝角的平分线相垂直的方向上，具有较大的负弯矩，并随斜交角的增大而增大，其分布范围不宽并迅速消减；支撑边上的反力很不均匀，在两钝角部分的支座压力要大得多，而锐角处反力较小，甚至出现负反力（上翘）；lSCHOOL OF TRANSPORTATION,WUT PRODUCED BY：X J CHEN2.2 Features of the skew bridge 斜交板桥的特点l第24

34、页/共70页第二十五页，共70页。2.1.2 Construction features of the skew slab2.1.2 Construction features of the skew slab2.1.2 Construction features of the skew slab2.1.2 Construction features of the skew slab斜交斜交斜交斜交(xi jio)(xi jio)(xi jio)(xi jio)板桥的构造特点板桥的构造特点板桥的构造特点板桥的构造特点整体式斜交板 城市(chngsh)板桥l与b 较接近（l/b 1.3 n当=2

35、535，平行四边形布置；n当=4060，主筋延斜边布置，分布筋两钝角之间垂直于主筋，在支撑边附近着平行于支撑边；=4060=2535SCHOOL OF TRANSPORTATION,WUT PRODUCED BY：X J CHEN第26页/共70页第二十七页，共70页。3.1 3.1 Construct Construct characteristic characteristic of of the the simple-supported simple-supported and and fabricated fabricated RC RC beam beam bridge bridge

36、 装装装装配配配配式式式式简简简简支支支支梁梁梁梁桥桥桥桥的的的的构构构构造造造造(guzo)(guzo)特点特点特点特点1.Section 截面(jimin)型式2.槽形、T形和箱形。3.4.5.3.1 Construction features of the prefabricated simple-supported beam bridge装配式简支梁桥的构造(guzo)特点SCHOOL OF TRANSPORTATION,WUT PRODUCED BY：X J CHEN第27页/共70页第二十八页，共70页。槽形截面的特点：施工稳定性好，安装较方便；腹板薄，配筋通常(tngchng)只

37、能采用钢筋网片，难以形成骨架；钢筋用量相对较多，构件重量较大；通常(tngchng)采用钢筋混凝土(RC)，适用跨径为612m。1.Section 截面(jimin)型式SCHOOL OF TRANSPORTATION,WUT PRODUCED BY：X J CHEN3.1 Construct characteristic of the simple-supported and 3.1 Construct characteristic of the simple-supported and fabricated RC beam bridge fabricated RC beam bridge

38、装配式简支梁桥的构造装配式简支梁桥的构造装配式简支梁桥的构造装配式简支梁桥的构造(guzo)(guzo)特点特点特点特点第28页/共70页第二十九页，共70页。武汉理工大学交通学院(xuyun)制作：陈小佳T形截面的特点：制造简单；肋内配筋可以做成钢筋骨架；整体性较好，接头方便施工稳定性差，运输(ynsh)和安装较复杂；构件在桥面板的跨中接头，对板的受力不利；采用RC时，适用跨径为4.520m；采用PC时，适用跨径为2040m；1.Section 截面(jimin)型式跨中接头位置3.1 Construct characteristic of the simple-supported and

39、3.1 Construct characteristic of the simple-supported and fabricated RC beam bridgefabricated RC beam bridge 装配式简支梁桥的构造特点装配式简支梁桥的构造特点装配式简支梁桥的构造特点装配式简支梁桥的构造特点第29页/共70页第三十页，共70页。箱形截面的特点：抗扭刚度大，偏心荷载(hzi)下梁的受力较均匀；横向抗弯刚度大，稳定性好；制作较复杂，重量相对较大；1.Section 截面(jimin)型式SCHOOL OF TRANSPORTATION,WUT PRODUCED BY：X J C

40、HEN3.1 Construct characteristic of the simple-supported and 3.1 Construct characteristic of the simple-supported and fabricated RC beam bridge fabricated RC beam bridge 装配式简支梁桥的构造装配式简支梁桥的构造装配式简支梁桥的构造装配式简支梁桥的构造(guzo)(guzo)特点特点特点特点第30页/共70页第三十一页，共70页。块件划分的原则（1）技术可行：预制、吊装、运输条件（2）受力较小：接缝的位置（3）施工简单：接缝的数量

41、（4）力求标准化块件划分方式(fngsh)（1）纵向竖缝（2）纵向水平缝（3）纵、横向竖缝 2.块件划分(hu fn)SCHOOL OF TRANSPORTATION,WUT PRODUCED BY：X J CHEN3.1 Construct characteristic of the simple-supported and 3.1 Construct characteristic of the simple-supported and fabricated RC beam bridge fabricated RC beam bridge 装配式简支梁桥的构造装配式简支梁桥的构造装配式简支梁

42、桥的构造装配式简支梁桥的构造(guzo)(guzo)特点特点特点特点第31页/共70页第三十二页，共70页。（1）纵向(zn xin)竖缝 2.块件划分(hu fn)AAA-A延纵向的竖缝 g恒载应力Mg+p活载应力Mp=g+p应力总和SCHOOL OF TRANSPORTATION,WUT PRODUCED BY：X J CHEN3.1 Construct characteristic of the simple-supported and 3.1 Construct characteristic of the simple-supported and fabricated RC beam

43、bridge fabricated RC beam bridge 装配式简支梁桥的构造装配式简支梁桥的构造装配式简支梁桥的构造装配式简支梁桥的构造(guzo)(guzo)特点特点特点特点第32页/共70页第三十三页，共70页。3.1 Construct characteristic of the simple-supported and 3.1 Construct characteristic of the simple-supported and fabricated RC beam bridge fabricated RC beam bridge 装配式简支梁桥的构造装配式简支梁桥的构造装

44、配式简支梁桥的构造装配式简支梁桥的构造(guzo)(guzo)特点特点特点特点（1）纵向(zn xin)水平缝 2.块件划分(hu fn)AAg恒载应力MgA-A延纵向的水平缝 +p活载应力Mpp=g+p应力总和pSCHOOL OF TRANSPORTATION,WUT PRODUCED BY：X J CHEN第33页/共70页第三十四页，共70页。主梁布置(bzh)横隔梁布置(bzh)3.2.1 3.2.1 构造构造构造构造(guzo)(guzo)布置布置布置布置 bl/2l/2l/4l/4b端横隔板(bn)中横隔板1/4横隔板AAA-ABBB-BSCHOOL OF TRANSPORTATI

45、ON,WUT PRODUCED BY：X J CHEN3.2 design and construct of simple-supported and fabricated RC beam bridge 装配式钢筋混凝土简支梁桥第34页/共70页第三十五页，共70页。主梁及横隔(hn)梁布置实例3.2.1 3.2.1 构造构造构造构造(guzo)(guzo)布布布布置置置置 SCHOOL OF TRANSPORTATION,WUT PRODUCED BY：X J CHEN3.2 design and construct of simple-supported and fabricated RC

46、 beam bridge 装配式钢筋装配式钢筋(gngjn)混凝混凝土简支梁桥土简支梁桥第35页/共70页第三十六页，共70页。主梁3.2.2 3.2.2 截面尺寸截面尺寸截面尺寸截面尺寸(ch(ch cun)cun)的拟定的拟定的拟定的拟定 边梁中梁1518cmh=(1/111/16)lh=3/4hRA68cmh/12150220cmSCHOOL OF TRANSPORTATION,WUT PRODUCED BY：X J CHEN3.2 design and construct of simple-supported and fabricated RC beam bridge 装配式钢筋装配

47、式钢筋(gngjn)混凝混凝土简支梁桥土简支梁桥第36页/共70页第三十七页，共70页。横隔板(bn)3.2.2 3.2.2 截面截面截面截面(jimin)(jimin)尺寸的拟定尺寸的拟定尺寸的拟定尺寸的拟定 横隔板(bn)16cm梁高h=3/4hR14cmSCHOOL OF TRANSPORTATION,WUT PRODUCED BY：X J CHEN3.2 design and construct of simple-supported and fabricated RC beam bridge 装配式钢筋混凝土简支梁桥第37页/共70页第三十八页，共70页。n 主筋n 主筋的弯起n 分

48、布钢筋(gngjn)n 其它构造钢筋(gngjn)n 保护层3.2.3 3.2.3 钢筋钢筋钢筋钢筋(gngjn)(gngjn)构造构造构造构造 SCHOOL OF TRANSPORTATION,WUT PRODUCED BY：X J CHEN3.2 design and construct of simple-supported and fabricated RC beam bridge 装配式钢筋装配式钢筋(gngjn)混凝混凝土简支梁桥土简支梁桥第38页/共70页第三十九页，共70页。干接头(ji tu)湿接头(ji tu)3.2.4 3.2.4 装配式主梁的连接装配式主梁的连接装配式主

49、梁的连接装配式主梁的连接(linji)(linji)构造构造构造构造 SCHOOL OF TRANSPORTATION,WUT PRODUCED BY：X J CHEN3.2 design and construct of simple-supported and fabricated RC beam bridge 装配式钢筋装配式钢筋(gngjn)混混凝土简支梁桥凝土简支梁桥第39页/共70页第四十页，共70页。n湿接头(ji tu)实例3.2.4 3.2.4 装配式主梁的连接装配式主梁的连接装配式主梁的连接装配式主梁的连接(linji)(linji)构造构造构造构造 连接(linji)前

50、连接(linji)后 SCHOOL OF TRANSPORTATION,WUT PRODUCED BY：X J CHEN3.2 design and construct of simple-supported and fabricated RC beam bridge 装配式钢筋混凝土简支梁桥第40页/共70页第四十一页，共70页。n 端部梁肋加厚n 梁肋下部(xi b)加宽成马蹄形n 翼缘板加宽3.3.1 3.3.1 构造构造构造构造(guzo)(guzo)布置布置布置布置 SCHOOL OF TRANSPORTATION,WUT PRODUCED BY：X J CHEN3.3 design