XXXX铁路客运专线工程XXXXXX标XX分部预应力混凝土管桩工艺性试验施工方案编制：审核：审批：XXXXXXXXX有限公司XXXXX年XX月目录1概述..............................................................................21.1工程概况........................................................................21.2地质水文情况....................................................................21.2.1地形地貌......................................................................21.2.2工程地质特征..................................................................21.3编制依据........................................................................32试桩施工总体规划...................................................................42.1试桩工期安排....................................................................42.2施工部署........................................................................42.2.1管理人员配备..................................................................42.2.2作业人员配备..................................................................42.2.3主要机械设备配备...........................................................53主要施工方案及工艺流程.............................................................53.1主要施工方案....................................................................53.2试桩目的........................................................................64施工准备...........................................................................64.1内业技术准备....................................................................64.2外业技术准备....................................................................65施工程序与工艺流程.................................................................65.1施工程序........................................................................75.2工艺流程........................................................................75.2.1桩位放样...................................................................75.2.2桩机就位...................................................................85.2.3管桩堆放、吊桩.............................................................85.2.4压桩.......................................................................85.2.5送桩、接桩、截桩..........................................................105.3施工常见的问题及防治方法.......................................................115.4成桩质量控制及检测.............................................................126质量、安全及环保措施..............................................................136.1质量保证措施...................................................................136.2安全施工保证措施...............................................................147文明施工和环境保护措施............................................................157.1文明施工措施...................................................................157.2环境保护措施...................................................................1511概述1.1工程概况本段路基均为软土路基，基底需进行加固处理，加固方式主要为预应力管桩、CFG桩、螺杆桩。其中DK327+580～DK328+355.41段路基基底采用预应力管桩进行加固。本施工区段范围内预应力管桩总长约285544延米。预应力管桩按正方形布置，桩径0.4m，桩间距2.0m，桩长22～30m，具体形式详见软基处理形式汇总如表1.1所示：表1.1软基处理形式汇总表里程范围长度(m)桩径(m)桩距(m)桩长（m）垫...
