中城建第二工程局集团有限公司LSX-DT-QLSG1工程挂篮施工方案中城建第二工程局集团有限公司2011年4月3日目录第一章工程概况..........................................................................................................3第二章方案概述..........................................................................................................3第三章0号块施工.......................................................................................................4一、方案的确定.................................................................................................4二、施工工艺流程.............................................................................................5三、0#块临时锚固设置.....................................................................................5四、托架搭设.....................................................................................................7五、托架的预压.................................................................................................9六、支座安装...................................................................................................10七、模板...........................................................................................................10八、钢筋工程...................................................................................................11九、纵向制孔与横向、竖向预应力安装.......................................................12十、砼搅拌、运输、浇筑...............................................................................13十一、预应力施工...............................................................................................15十二、管道压浆...................................................................................................17第四章挂蓝施工........................................................................................................18一、挂蓝结构简述：.......................................................................................18二、施工流程...................................................................................................19三、关键工序施工方案：...............................................................................20第五章边跨箱梁现浇段施工....................................................................................25第六章合拢段的施工................................................................................................28第一章工程概况（1）主桥采用（72.5+120+72.5）m三跨预应力混凝土变截面连续箱梁，横桥向采用单箱单室截面；梁体采用直腹板，箱梁顶板宽16m,箱梁底板宽8m,箱梁两翼挑臂长4m,桥面设2%双向横坡，箱梁底板横桥向保持水平。箱梁高度按二次抛物线，从距跨中3.2m变化至距主墩中心2.0M处7.0M。主桥箱梁在墩顶0号块处设置厚度为2.5Md横隔板，在边跨端部设厚度为1.6M的横隔板，中跨跨中设置0.3M厚横隔板。箱梁在横桥向底板保持水平，箱顶设2%的双向横坡。箱梁采用纵、横、竖三向预应力体系。（2）主桥箱梁顶板厚度为0.28M：底板厚度按二次抛物线，由跨中的0.30M变化至距0号块中心线2.0M处的0.8M；腹板厚度7号块件以前为0.9M，9号块件以后为0.5M，在8.7号块件范围内由0.90M按直线变化到0.5M。为改善箱梁根部截面受力，在0号块两端附近的截面顶、底板局部加厚。（3）主桥连续箱梁采用挂蓝悬臂浇筑法施工，各单：“T”箱梁除0、1号块采用在支架上现浇外，其余分为15对梁段，均采用对称平衡悬臂逐段浇筑法施工。箱梁纵向悬浇分段长度为（5×3.0M+4×3.5+6×4M）...
