T型梁预制施工方案目录一、概述.................................................................................................................2二、技术质量标准.................................................................................................3三、T型梁的结构形式..........................................................................................4四、T梁预制工期控制..........................................................................................5五、施工工艺流程.................................................................................................5六、施工方法.........................................................................................................5（一)钢筋绑扎.......................................................................................................5（二）模板施工.....................................................................................................5(三)砼配合比及水泥浆配合比设计......................................................................6(四）T梁砼施工.....................................................................................................7（五）预应力工艺.................................................................................................9七、T型梁预制劳动力计划................................................................................13八、T型梁预制机械设备....................................................................................13九、安全注意事项...............................................................................................14十、预制场施工方案...........................................................................................14(一)预制场平面布置............................................................................................14（二）预制场断面结构.......................................................................................14（三）龙门吊及轨道结构...................................................................................14（四）29.94mT梁预制台座................................................................................15（五）预制场工程数量.......................................................................................15一、概述鄂黄长江公路大桥南引桥上部结构为后张法预应力混凝土T型梁，共260榀。跨度为29.94m，梁高为1.8m.荷载类别为汽车—超20级，挂—120，人群荷载3.5kN/m。主要工程数量见下表：一榀预制梁材料数量表表1项目梁位50号砼3（m）钢材(kg）榀数钢绞线52（其中SD-160型伸缩缝处榀）208（其中SD—160型伸缩缝处榀）Ⅰ级钢筋Ⅱ级钢筋其它安装重钢材量（kg)(t/榀）3边梁29.94m跨中梁24。979372749。31362。9182.364。9026.24867。52843.61906。1286.068.20一片边梁、中梁钢束、波纹管、锚具数量表(29.94m跨)表2钢绞线梁位钢束号N1边梁N2N3N4N1中梁N2N3N4梁位规格φ外77边梁φ外77φ外77φ外77φ外77中梁φ外77φ外77φ外77长度（cm)2908.82902.42920.62920。62908。82902.42920。62920.6总长（m）29。0929.0229.2129.2129。0929.0229.2129.21锚具型号ATM15—6ATM15-7ATM15-7ATM15-7ATM15-7ATM15-6ATM15—6ATM15-6钢束长（cm)3144.83138.43156.63156。63144.83138.43156。63156。6共重(kg）207。93242。10243.50243.50242.59207.51208。71208。71引伸量(cm)14.514。514.514。514。514。514.514。5624.93242.59729。10总重（kg)207.93波纹管二、技术质量标准预应力钢束采用ASTM416—87a标准,低松弛钢绞线，Ry=1860Mpa，直径15.24mm，公称面积140mm，计算采用弹性模量E=...
