吉峰三号桥高架桥张拉、压浆施工方案页脚内容1预应力张拉压浆专项施工方案编制人：审核人：批准人：中铁××局集团有限公司吉峰三号桥高架桥张拉、压浆施工方案页脚内容1目录一、工程概况.........................................................................11.1编制依据..........................................................................................11.2编制目的..........................................................................................11.3工程概况.........................................................................................2二、施工组织安排................................................................22.1成立质量管理小组........................................................................22.2主要施工机械设备........................................................................4三、预应力张拉工艺............................................................53.1设计及规范要求.............................................................................53.2准备工作........................................................................................73.3钢绞线张拉力和伸长量计算......................................................113.4预应力张拉...................................................................................133.5张拉工作中注意事项..................................................................16四、真空压浆工艺...............................................................17吉峰三号桥高架桥张拉、压浆施工方案页脚内容24.1真空辅助压浆原理......................................................................174.2真空辅助压浆特点......................................................................184.3压浆前准备工作.........................................................................194.4压浆工艺......................................................................................194.5封锚..............................................................................................204.6真空压浆注意事项......................................................................21五、预应力施工常见问题及处理措施.............................225.1锚垫板面与孔道轴线不垂直或锚垫板中心偏离孔道轴线......225.2锚垫板处混凝土变形开裂..........................................................225.3滑丝与断丝..................................................................................235.4预应力孔道线形与设计偏差较大.............................................235.5预应力损失过大..........................................................................245.6预应力孔道注浆不密实..............................................................245.7预应力孔道灌不进浆..................................................................25六、预应力质量控制措施..................................................25吉峰三号桥高架桥张拉、压浆施工方案页脚内容36.1加强对设备、锚具、预应力筋的检查......................................256.2严格执行张拉操作规程..............................................................266.3质量保证措施..............................................................................26七、预应力安全控制措施..................................................27附件1、BK-10A预应力梁管道压浆料合格证..................29附件2、墩柱预应力伸长量复核值...................................30附件、盖梁预应力伸长量复核值..............................
