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遵毕高速公路15标涵洞施工方案

遵毕高速公路№15合同段

　涵洞通道施工技术方案

单位名称：广西路桥总公司一分公司

万年桥电站分期施工方案的优化调整遵毕№15合同段项目经理部

编制日期：2010.6.10

第一章编制说明 .............................................................3

1.1编制说明 ·····························································3

1.2编制原则·····························································4第二章工程概况..............................................................4

2.1工程概况·····························································4

2.2气象··································································6

2.3水文··································································6

第三章技术特点······························································6

3.1工程技术特点··························································6

第四章施工方案及施工工艺····················································7

4.1施工准备······························································7

4.2涵洞通道施工方案······················································9

4.2.1施工工艺流程图·····················································10

4.2.2混凝土盖板涵、通道施工··············································10

4.2.2.1基坑开挖·························································10

4.2.2.2模板安装·························································11

4.2.2.3钢筋混凝土盖板施工···············································11

4.2.2.4混凝土浇筑······················································12

4.2.2.5盖板运输·························································13

4.2.2.6进出口砌筑·······················································13

4.2.2.7涵背回填························································13

第五章质量、安全、文明施工·················································14

5.1质量保证措施·························································15

5.1.1质量检验程序图·····················································15

5.1.2工程质量控制指标、检验频率及检验办法································15

5.1.3分项工程报验程序···················································15

5.2安全保证体系························································16

5.2.1建立健全涵洞施工安全管理制度·······································16

5.2.2施工安全技术管理···················································16

5.2.3加强安全教育，指定相应安全措施······································16

5.2.4机械设备的安全措施·················································16

5.2.5防触电及电器设备安全措施···········································16

5.2.6施工现场设立安全标志···············································16

5.2.7严防火灾··························································16

5.2.8特种作业人员持证上岗···············································17

5.2.10坚持安全施工的指导思想············································17

5.3环境保护及文明施工措施···············································17

5.4雨季施工技术措施·····················································17

5.4.1雨季施工部署······················································17

5.4.3雨季施工作业安全用电防护措施······································18

（1）、《杭瑞高速公路贵州境遵义至毕节高速公路土建工程第十五合同段施工招标文件》及补遗书。

《公路施工手册－桥涵》（下册）；

《广西公路桥梁工程总公司三标一体管理手册》

（2）、现场实际情况和通过调查所掌握的有关资料信息。

（3）、我公司的综合实力、机械设备能力、技术力量和多年来类似工程建设所积累的丰富施工经验。

（1）、严格遵循招标、投标文件的内容及设计文件要求，确定本工程的创优规划，并据此来编制施工方案。

（2）、仔细考察工程实地，认真研究招标、投标文件、设计图纸和有关规定，充分考虑本桥的特点、场地、交通、水文、运输、料源、民情、水电供应、气候等实际情况的基础上编制。

K1693+119.5

K1697+000.363

本路线段内的河流为山区雨源性河流，属于乌江水系。地表大小冲沟发育，大冲沟常年流水，起点至终点见较大的河流主要为雨冲河。河水受季节性控制明显，汛期流量大，枯水期流量小，具有山区河流受降雨控制暴涨暴落特点。小冲沟为季节性小溪流，流程较短，水量少，受季节性控制明显，地表水体总体不发育。

涵洞施工前，首先根据设计资料进行现场核对，以便准确地进行测量放样，制定合理可行的施工方案。

采用人工配合机械放坡开挖基坑。至设计标高时检查基底，报监理工程师现场测试合格并签认后，按图施工。地质良好的石质基坑可利用坑壁做为基础模板，地质差的基坑采用组合钢模板，砼由机械拌和，振捣器振捣。

基础沿洞身方向每4~6米设一道沉降缝，或按实际情况确定，沉降缝宽2cm，采用沥青麻絮或其它弹性较好的不透水材料填塞。

盖板涵、通道涵身模板采用整体大块钢模板（每块不小于2m），外侧设立支撑固定，侧模采用拉杆固定，涵台帽钢筋加工与安装严格按照技术规范进行。砼采用集中拌和，砼运输车运输，现场采用漏斗导管输送，以避免离析。沿涵身4～6米设置沉降缝一道，填以沥青麻絮或其它弹性较好的不透水材料。盖板由预制场集中预制，用汽车运到现场，吊车安装就位。

涵洞进出水口在涵身完工后进行，翼墙、跌井、急流槽、挡墙的型式按照图纸尺寸要求进行施工，全部采用坐片石混凝土砌筑。基坑开挖至设计标高时，先处理干净，报请监理工程师检查签认才开始砌筑。翼墙墙身砌筑，要求线条均匀流畅，表面平整光洁。

第四章施工方案及施工工艺

（1）图纸会审JGJ 450-2018 老年人照料设施建筑设计标准(完整正版、清晰无水印).pdf，施工前组织项目部所有技术人员全面熟悉施工图纸、资料和有关文件，领会设计意图，如有疑问或发现差错应及时记录，在设计交底和图纸会审中提出，请设计部门予以解答。

（2）在经过测量复核沿线导线点的基础之上，根据设计图纸进行涵洞、通道中心桩放样，检查图纸上的设计位置与实地位置是否相符，发现问题应及上报。

（3）以设计图纸中标明为准，并应符合有关技术规范要求或监理工程师的指示选用，由业主指定厂家供应的材料均严格按照质量标准体系进行控制，砂石等地方材料的进场全部由试验数据严格控制。

（4）开工前的试验：开工前应做好砼、砂浆的配合比试验外墙脚手架施工方案.doc，报监理工程师审批。为工程质量的控制打好基础。

（5）机械准备，主要进场设备见图

主要进场的施工机械设备表