河北公路大桥主桥跨下钢平台及钢支撑施工技术方案(现浇箱梁施工,钻孔灌注桩).doc

一、编制依据...........................................................................................................1

二、工程概况...........................................................................................................1

三、施工准备...........................................................................................................2

3.1技术准备.....................................................................................................2

3.2材料要求.....................................................................................................2

3.3机具设备.....................................................................................................3

3.4人员配置.....................................................................................................4

3.5作业条件.....................................................................................................5

四、工期安排...........................................................................................................5

五、施工工艺...........................................................................................................5

5.1工艺流程图.................................................................................................5

5.2测量放线.....................................................................................................7

5.3支架基础处理.............................................................................................7

5.4支架系统设计、计算及搭设....................................................................12

5.5底模安装...................................................................................................18

5.6侧模及翼缘板模板安装............................................................................21

5.7芯模安装方法...........................................................................................22

5.8模板质量验收..........................................................................................