大西客专（原平至西安段）线下工程沉降变形观测及评估方案大西客运专线公司二〇一〇年三月目录第一章总则............................................................................................1一、适用范围......................................................................................1二、工作依据......................................................................................1第二章组织管理....................................................................................3一、职责分工......................................................................................3（一）建设单位......................................3（二）施工单位......................................3（三）监理单位......................................4（四）设计单位......................................4（五）咨询单位......................................5（六）评估单位......................................5二、工作程序......................................................................................5（一）施工单位......................................5（二）监理单位......................................6（三）设计单位......................................6（四）咨询单位......................................7（五）评估单位......................................7（六）建设单位......................................7第三章通用要求....................................................................................9一．沉降变形测量等级及精度要求..................................................9二．沉降变形监测网主要技术要求及建网方式..............................9三．沉降变形测量点的布置要求....................................................11四．沉降变形监测测量工作基本要求............................................12五．沉降变形监测观测具体要求....................................................12六．沉降变形监测平行检测工作....................................................14第四章专业要求..................................................................................15一、路基工程....................................................................................15（一）路基沉降变形观测.............................15（二）路基工程沉降评估.............................24（三）过渡段沉降变形观测...........................26（四）过渡段的沉降评估.............................27二、桥涵工程....................................................................................28（一）一般规定.....................................28（二）桥涵变形控制标准.............................28（三）变形观测方案.................................29（四）观测资料要求.................................39（五）沉降评估.....................................40（六）其他.........................................43三、隧道工程....................................................................................43（一）一般规定.....................................43（二）沉降观测的内容...............................44（三）沉降观测点的布置.............................44（四）观测精度.....................................45（五）沉降观测频度.................................45（六）沉降评估.....................................45四、综合评估....................................................................................47附件一：线下工程沉降变形观测及评估流程图............................48附件二：资料传递程序........
