K11+819箱涵工程模板与支架专项施工方案_资料解读.doc

昆明经济技术开发区呈黄路（北段）工程 第Ⅶ合同段（K10+800~K12+907.7） K11+819箱涵 工程模板与支架专项施工方案 编制： 审核： 审批： 四川瑞通工程建设集团有限公司 二〇一六年 月 日 目 录 一、工程概况············································································································2 二、编制依据············································································································施工计划············································································································施工工艺技术····································································································施工安全保证措施···························································································劳动力计划·······································································································计算书··············································································································· 工程概况 昆明经济开发区呈黄路（北段）工程第Ⅶ标段，起于昆明经济技术开发区清水片区，主线桩号为K10+800～K12+907.7，止于东风东路延长线（经开204号路），道路主线长2107.7米，道路等级为城市快速路，红线宽度为60米，标准横断面布置为：7.5m(人行道)＋7.5m(辅道)＋2.0m(侧分带)＋12.0m(主道)＋2.0m(中分带) ＋12.0m(主道)＋2.0m(侧分带)＋7.5m(辅道) ＋7.5m(人行道)＝60.0m。 根据规划排洪渠位置， K11+819处设现浇钢筋砼箱涵一座，采用2-6*4m设计结构形式，暗涵、正交，箱涵涵身顺水流方向全长71m，净跨6米，净高4米。箱涵的顶板厚度为60cm、底板厚度为60cm、侧墙厚度为50cm。进出口分别设置C20混凝土一字墙。 平面图及横断面图如下： 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； 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》（GB 15831）； 9、其他相关规范。 三、施工计划施工工艺技术 2、箱涵涵身施工要点 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）。 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，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。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