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1、云桂铁路云南段七标段隧道仰拱施工工艺目录1、工程概况.12、工艺总结.12.1、工艺原理.12.2、工艺特点.12.3、施工方法.12.4、工艺流程.22.5、施工工艺控制情况.22.5.1自移式仰拱移动栈桥和简易式仰拱栈桥配合使用.22.5.2仰拱端部定型钢模板及顶部弧形钢模板的加工与安装.33、施工质量控制要点.64、监理检查流程.64.1仰拱认可验收检查.64.2仰拱填筑验收检查.64.3仰拱浇筑验收检查。.65、仰拱施工检验验收标准.75.1、仰拱施工.75.1.1工作控制要点.75.1.2监理工作主要控制项目.75.1.3监理工作一般控制项目.115.2、仰拱填充.125.2.1监理
2、工作控制要点.125.2.2监理工作主要控制项目.125.2.3监理工作一般控制项目.146.隧道仰拱施工存在问题的分析.146.1仰拱背模容易上浮.146.2相邻两版间施工缝错台现象.146.3仰拱端头中埋式止水带定位不准确.146.4仰拱钢筋间距及排距超标.151、工程概况新建云桂铁路云南段站前工程七标段，线路全长50.9km，其中正线长26.402km，联络线长24.529km。为把云桂铁路建设成优质、平安、绿色、和谐的精品工程，隧道工程尤为重中之重。根据我单位创优规划目标及样板引路的建设指导方针，隧道施工以工艺、工序为着眼点进行样板实施。我项目部以共性问题着手，采取先工艺研究后工艺实施
3、再先进工艺推广的方式样板工艺的实施和在标段内部的推广，现就“隧道仰拱施工工艺”的先进工艺总结如下。为此于2011年3月15日2010年3月18日，在石林隧道进口进行了仰供施工的总监理工程师首件试点，现将仰拱总监负责制成果总结如下。2、工艺总结2.1、工艺原理隧道底部围岩失稳是导致隧道结构开裂与破坏的重要原因，二衬衬砌施工的顺序是仰拱超前，拱墙整体浇注。仰拱应超前拱墙衬砌，仰拱整体浇注采用自移式仰拱移动栈桥和简易式仰拱栈桥配合使用，实现同时作业，加快施工进度；仰拱成型采用定型钢模板、仰拱弧形模板，确保仰拱中埋式止水带定位准确，仰拱线形顺畅；仰拱、仰拱填充分开整体浇注，一次成型，仰拱填充混凝土应在
4、仰拱混凝土终凝后浇筑。2.2、工艺特点1、采用机械化配套快速施工技术，施工工艺完善，可操作性强，安全质量全面受控。2、采用自移式仰拱移动栈桥与多套简易式仰拱栈桥多工作面配合使用，大大加快了现场施工进度。3、仰拱端部、顶部均采用仰拱弧形钢模板，既保证了中埋式止水带定位准确、也使仰拱线形顺畅，满足了设计和验收标准的要求。4、仰拱顶面两侧纵向中埋式钢边止水带采用自制式热熔焊接机进行焊接，确保了止水带的焊接质量，有效保证了隧道结构的防渗水。2.3、施工方法仰拱应超前拱墙衬砌，仰拱整体浇注采用自移式移动栈桥和简易式仰拱栈桥配合使用，实现同时作业，加快施工进度；仰拱成型采用定型钢模板、仰拱弧形模板，确保仰
5、拱中埋式止水带定位准确，仰拱线形顺畅；仰拱、仰拱填充分开整体浇注，一次成型，仰拱填充混凝土应在仰拱混凝土终凝后浇筑。2.4、工艺流程2.5、施工工艺控制情况2.5.1自移式仰拱移动栈桥和简易式仰拱栈桥配合使用采用仰拱栈桥施工在一定程度上解决了仰拱施工与开挖运输的干扰问题，实现了仰拱与掌子面施工同时作业。、级围岩地段，采用自移式仰拱移动栈桥，一个循环可施工长度达12.5m，工作效率高，且使用方便、安全可靠。同时可自行实现纵向与横向移动作业，具有适于变跨、方便运输、快速拼装等特点。、级围岩及围岩变换频繁地段，因步长问题，考虑采用简易式仰拱栈桥。该栈桥一个循环可施工5m，周转频率高、使用灵活，同时可
6、进行跳跃式同时作业。工程监理2.5.2仰拱端部定型钢模板及顶部弧形钢模板的加工与安装2.5.2.1仰拱端部定型钢模板根据隧道仰拱设计断面尺寸，采用28槽钢加工成与隧底同弧度的支撑板，作为仰拱衬砌及仰拱填充端部模板的底座。面板、加筋板厚度为6mm钢板加工成横向长度为1.2m，竖向为隧底弧度的弧形钢模板。监理工程师论坛http:/ of the Department of project management; Project documents and information: Project Engineering Department; Materials and equipment: ma
7、terial supply projects; Security controls: the project Department of safety and security; Construction machinery: Project Engineering Department; Financial: Project Management Department of finance; Security and fire services: project security. 3.3.5 management representative and project manager in
8、this item specifies that the Chief Engineer is the management representative, responsible for the operation of quality management system and supervision, regardless of how his other responsibilities, should have a clear mandate to: ensure that the quality management system is implemented and maintai
9、ned; The running of the quality management system to the project manager, including needed improvements; Always be aware that the customers needs and requirements. 3.4 3.4.1 project management review should be an annual review of its quality management system to ensure its continuing suitability, ad
10、equacy and effectiveness. 3.4.2 Administration review by the project manager responsible for organization and implementation, project quality control Department is responsible for specific tasks. 3.4.3 the management review should compare and evaluate the following input: internal and external quali
11、ty audits and corrective effect; Customer feedback on the construction, installation, commissioning, service information (complaints and satisfaction); Quality records, quality compliance with trend reports, analysis of results; Combined with the quality policy and the achievement of the goals, status and suitability evaluation of the quality management system to determine corrective, preventive and improvement measures of performance. 3.4.4 evaluation method and procedure (1) review: by the project manager, project manager, functional departments and heads of specialized