现浇T梁形成桥上预制场及桥上预制T梁工艺

:10096825(2010)16028602TT:20100209:(1971),,,,400060(1973),,,,400050罗金明王芳:以云南水麻高速滴水岩大桥现浇T梁形成桥上预制场施工为例,结合工程特点,分别阐述了施工场地布置搭架现浇T梁施工及其模板支架的计算,T梁的横移安装三方面的具体步骤和注意事项,为山区桥梁无预制场情况下施工积累了经验:现浇T梁,支架,预制场,台座:U445.4:A,,,,T,1,,V,,,,,,,,3T,,,T2,,,,T,,,,,T8,(30m),T,T,,3T,C1010cm~15cm,48!3T,T,,1T;12cm!12cm,60cm,50cm;20cm,,5cm!5cm!15cm,0.5mT,,T1.2cm,0.48m,T4TJGJ130200110.0m,:b=:[1]JTJ026.11999,公路隧道通风照明设计规范[S].[2]胡彦杰,龙正聪.雪峰山隧道通风系统设计[J].中南公路工程,2008,31(1):5657.[3]徐琳,张旭.水平隧道火灾通风纵向控制风速的合理确定[J].中国公路学报,2006,20(2):3334.[4]李鹏.浅谈公路隧道通风方式的选择[J].山西建筑,2009,35(17):327329.TheventilatingdesignofTshapedtunnelinGuangzhouKONGQingcunAbstract:CombiningwiththeventilatingdesignitemofTshapedtunnelinGuangzhou,thegeneralcalculationanddesignmethodsofventilatingdesigninurbanhighwaytunnelwereintroduced.ConsideringthespecialtyofthistunnelthatTshape,itpointedoutthattheventilatingtypeswereneededtoconsiderincalculationprocess,comparingtheresistancepressuresoftwochannelstoensurethetotalrisepressureoffan.Keywords:tunnelventilating,jetfan,ventilatingtypes∀286∀第36卷第16期2010年6月山西建筑SHANXIARCHITECTUREVol.36No.16Jun.20100.40m,l=0.80m,h=1.20m4.1模板支架荷载标准值(轴力)1):a.:NG1=0.149!10.000=1.49kN;b.,530kg:NG2=2.12kN/m;c.:NG3=10.120kN,NG=NG1+NG2+NG3=13.73kN2),NQ=(2.000+1.000)!0.400!0.800=0.960kN3),:N=1.2NG+1.4NQ=17.82kN4.2立杆的稳定性计算,:=NA#[f],N,kN,N=17.82kN;,Lo/i,Lo,m,i,cm,i=1.58cm;A,cm2,A=4.89cm2;,N/mm2;[f],[f]=205.000N/mm2∃%,(1)(2):Lo=k1uh(1)Lo=h+2a(2),k1,k1=1.243;u,∃%5.3.3,u=1.700;a,a=0.100m(1):Lo=k1uh=1.243!1.700!1.200=2.536m;Lo/i=2535.720/15.800=160.000;Lo/i=0.274;:=17820.0/(0.274!489.000)=133.0N/mm2;:=133.0[f]=205.000,(2):Lo=h+2a=1.200+2!0.100=1.400m;Lo/i=1400.000/15.800=89.000;Lo/i=0.667;:=17820.0/(0.667!489.000)=54.6N/mm2;:=54.6[f]=205.000,5TT,T,,T,YCW26T,T,,T,25.1台座及模板设计制作1)C30,0.48m!0.25m,&50!3,;2)T,5mm,&63!5,63mm!5mm,,12,,,25,,,5.2移梁存梁,;265t,,,,,T627,:[1]胡世春.预应力T梁混凝土外观质量问题原因及改进[J].山西建筑,2009,35(11):131132.OncastingyardoncastinplaceTbeambridgeanditsprecastTbeamcraftLUOJinmingWANGFangAbstract:TakingthecastinplaceTbeamconstructiononDishuiyanBridgealongYunnanShuimaexpresswayasanexample,thepapercombiningwiththeprojectcharacteristics,illustratestheconstructionfieldlayout,theestablishmentofcastinplaceTbeamconstructionandthecalculationofthemodelsupport,andthetraverseinstallationofTbeamandprecautions,soastoaccumulateexperiencefortheconstructioninnocastinplacefieldofmountainousregions.Keywords:castinplaceTbeam,support,castinplacefield,pedestal∀287∀第36卷第16期2010年6月:TT