箱涵工程模板与支架专项施工方案

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1、目录一、工程概况············································································································2二、编制依据············································································································3三、施工计划············································

2、································································3四、施工工艺技术····································································································4五、施工安全保证措施···························································································13六、劳动力

3、计划·······································································································25七、计算书···············································································································25-42-一、工程概况1、本工程属于大泥窝河工程中的一个过水箱涵（沙文生态科技产业园麦架河截污、防洪及景观整治工程的

4、一部分，位于麦架河治理河段中部，属于麦架河左岸一级支流，与麦架河为界，由麦苏东路顺接上游大泥窝河，下游汇入麦架河），桩号K1+293-K1+302.06，全长9.06米，净跨10米，净高3.5米。底板与顶板为100cm厚的C40钢筋混凝土，顶板两侧下底倒角120cm*40cm，墙身为90cm厚的C40钢筋混凝土，垫层为20cm厚的C15素混凝土。平面图及横断面图如下：-42-2、参建单位如下：建设单位：贵阳高科开发建设有限公司设计单位：中国市政工程西南设计研究总院地勘单位：深圳勘察研究院有限公司监理单位：北京燕波工程管理有限公司施工单位：太平洋建设集团有限公

5、司二、编制依据1、施工图设计文件及地勘报告；2、中华人民共和国住房和城乡建设部-建质【2009】87号文件；3、中华人民共和国住房和城乡建设部-建质【2009】254号文件；4、《城市桥梁工程施工与质量验收规范》CJJ2-2008；5、《扣件式钢管脚手架安全技术规范》JGJ130-2011；6、《钢管满堂支架预压规程》JGJ/194-2009；-42-7、《混凝土结构工程施工规范》GB50666-2011；8、《建筑施工模板安全技术规范》JGJ-2008；9、《钢管脚手架扣件》（GB15831）；9、其他相关规范。三、施工计划待做（包括进度计划、材料与设备计

6、划等）四、施工工艺技术1、箱涵施工流程图-42-碎石垫层施工测量放样浇注垫层砼绑扎底板及腹板钢筋钢筋制作钢筋检验安装模板浇注底板砼搭顶板支架模板砼养护满堂支架模板上面预压绑扎腹板及顶板钢筋安装腹板模板浇筑顶板和腹板砼拆除模板和支架砼养护2、箱涵涵身施工要点-42-箱涵涵身竖向施工施工分2个阶段，第一阶段浇筑至底板内壁以上30cm；第二阶段浇筑剩余部分，2次浇筑的接缝应保证有良好的衔接面（粗糙、干净并不得有堆落的混凝土和砂浆）。（1）钢管满堂支架搭设平面图及培面图如下：本工程支架拟用扣件式钢管满堂脚手架，钢管采用φ48×2.5mm，模板支架搭设高度为3.5m，

7、立杆的纵距b=0.50m、横距l=0.50m、步距h=0.90m。纵、横向杆及立杆用扣件式钢管连接-42-。本工程支架搭设高度未超过4米，可以不设剪刀撑，但在横桥方向两端各设两二道加固斜撑，如图A-A剖面所示。在纵桥方向两端各设一道加固斜撑，如图B-B剖面所示。距离地面20cm设置纵横扫地杆。支架立杆顶端用可调U型顶托相接，顶托杆直径36mm，杆长60cm，杆插入钢管355cm，外露25cm。立杆顶层水平杆中心线至托撑顶面长度a为0.35米（不大于0.5米）。顶托上设二层肋梁：下肋梁为纵向采用2*φ48×2.5mm钢管，间距50cm（如图A-A剖面所示）；上

8、肋梁为横向方木5cm（宽）×10cm（高）（如图B-