客运专线桥涵施工技术指南

目 录 TOC \o "1-3" \h \z \u 1 总则 PAGEREF _Toc186942379 \h - 3 -2　施工准备 PAGEREF _Toc186942380 \h -

目录 1..........................................................................................................................................-3- 总则 ...................................................................................................................................-4- 2施工准备 ....................................................................................................-4- 2.1施工调查和技术准备 .............................................................................................-6- 2.2主要施工机械设备的选择 .......................................................................................................................-6- 2.3辅助工程 ..........................................................................................................................................-7- 3基础 .......................................................................................................................-7- 3.1明挖基础 ............................................................................................................-7- 3.1.1基坑开挖 ............................................................................................................-8- 3.1.2基坑回填 ............................................................................................................-8- 3.1.3基坑护壁 ............................................................................................................-8- 3.1.4基坑围堰 ..........................................................................................................-11- 3.1.5基坑排水 ............................................................................-12- 3.1.6基底处理应符合下列规定： 3.1.7 基础处理中换填地基、重锤夯实、强夯、挤密桩、砂桩、碎石桩、粉喷桩和旋喷 ..........-12- 桩的施工参照《客运专线铁路路基工程施工技术指南》中的相关规定执行。 3.1.8............................................................................................................-12- 基底检验 ...........................................................................................-12- 3.1.9混凝土与砌体基础 ...............................................................-13- 3.1.10明挖基础的施工应符合下列规定： .........................................................................................................................-13- 3.2桩基础 ..........................................................................................................-13- 3.2.1沉桩基础 ......................................................................................................-16- 3.2.2钻孔桩基础 ..........................................................................................................-21- 3.2.3桩基承台 .......................................................................................-24- 3.2.4桩基础的质量标准： ......................................................................................................................-27- 3.3沉井基础 ......................................................................................................................................-30- 4墩台 .........................................................................................................................-30- 4.1墩台身 .....................................................................................................................-31- 4.2锥体填筑 ......................................................................................................-31- 4.3桥台的排水及防护 .................................................................................................................................-32- 5桥位制梁 .....................................................................................................................-32- 5.1膺架浇筑 ...................................................................................-33- 5.2连续梁、连续刚构的悬臂浇筑 ......................................................................................................-35- 5.3移动支架悬臂拼装 ..................................................................................................................-36- 5.4连续梁顶推 ......................................................................................................-38- 5.5先简支后连续箱梁 ...................................................................................................-39- 5.6移动模架造桥机制梁 ...............................................................................................-40- 5.7移动支架造桥机制架梁 ..........................................................................................................-42- 6预应力混凝土箱梁预制 ...................................................................................-42- 6.1后张法预应力混凝土箱梁预制 ...................................................................................-53- 6.2先张法预应力混凝土箱梁预制 .........................................................................................................................-57- 7预制箱梁架设 .....................................................................................................................-57- 7.1一般规定 ....................................................................................................................-57- 7.2架桥机架设 .......................................................................................................................-58- 7.3落梁就位 .............................................................................................-59- 8预应力混凝土Ｔ梁预制及架设 8.1.....................................................................................................................-59- Ｔ梁预制 8.2T............................................................................................-60- 梁架设安装和横向联结