桥梁施工加固技术规范

目 次

1 总则 ...................................................................................................................................... 1 2 术语 ...................................................................................................................................... 2 3 施工准备与施工组织 .......................................................................................................... 4 3.1 施工准备 ........................................................................................................................ 4 3.2 施工组织设计 ................................................................................................................ 4 3.3 施工安全及环境保护 .................................................................................................... 4 4 混凝土桥梁表层缺陷处理 .................................................................................................. 6 4.1 混凝土修补 .................................................................................................................... 6 4.2 水泥砂浆修补 ................................................................................................................ 6 4.3 聚合物水泥砂浆修补 .................................................................................................... 6 4.4 改性环氧砂浆（混凝土）修补 .................................................................................... 7 4.5 混凝土表面防腐涂装 .................................................................................................... 7 4.6 钢筋锈蚀处理 ................................................................................................................ 7 4.7 质量检验与验收 ............................................................................................................ 8 5 结构裂缝的处理 .................................................................................................................. 9 5.1 材料选用 ........................................................................................................................ 9 5.2 施工要求 ........................................................................................................................ 9 5.3 质量检验与验收 .......................................................................................................... 10 6 梁桥上部结构加固 ............................................................................................................ 11 6.1 桥面板补强加固 .......................................................................................................... 11 6.2 增大截面加固 .............................................................................................................. 11 6.3 粘贴钢板加固 .............................................................................................................. 12 6.4 粘贴纤维复合材料加固 .............................................................................................. 13 6.5 体外预应力加固 .......................................................................................................... 14 6.6 改变结构体系加固 ...................................................................................................... 16

6.7 质量检验与验收 .......................................................................................................... 16 7 拱桥加固施工 .................................................................................................................... 18 7.1 拱上建筑拆除 .............................................................................................................. 18 7.2 圬工拱桥加固 .............................................................................................................. 18 7.3 钢筋混凝土拱桥加固 .................................................................................................. 19 7.4 钢管混凝土拱桥加固 .................................................................................................. 19 7.5 中、下承式拱桥加固 .................................................................................................. 20 7.6 质量检验与验收 .......................................................................................................... 20 8 缆索承重桥梁的加固 ........................................................................................................ 21 8.1 一般要求 ...................................................................................................................... 21 8.2 斜拉索更换 .................................................................................................................. 21 8.3 吊杆更换 ...................................................................................................................... 22 8.4 系杆更换 ...................................................................................................................... 23 8.5 悬索桥主缆维修 .......................................................................................................... 23 8.6 锚碇加固 ...................................................................................................................... 24 8.7 质量检验与验收 .......................................................................................................... 24 9 钢桥及钢-混组合结构桥梁加固 ...................................................................................... 26 9.1 一般要求 ...................................................................................................................... 26 9.2 焊接加固 ...................................................................................................................... 26 9.3 栓接加固 ...................................................................................................................... 27 9.4 更换（增加）构件 ...................................................................................................... 27 9.5 改变结构体系加固 ...................................................................................................... 27 9.6 裂纹的修复 .................................................................................................................. 28 9.7 钢桥的涂装 .................................................................................................................. 29 9.8 质量检验与验收 .......................................................................................................... 29 10 桥梁基础及下部结构加固 .............................................................................................. 30 10.1 盖梁及墩柱加固 ........................................................................................................ 30 10.2 墩、台身套箍加固 .................................................................................................... 30

10.3 桥台加固 .................................................................................................................... 31 10.4 增大基础加固 ............................................................................................................ 31 10.5 承台加固 .................................................................................................................... 31 10.6 桩基加固 .................................................................................................................... 32 10.7 人工地基加固 ............................................................................................................ 33 10.8 基础冲刷加固 ............................................................................................................ 33 10.9 质量检验与验收 ........................................................................................................ 34 11 桥梁抗震及防碰撞加固 .................................................................................................. 36 11.1 一般要求 .................................................................................................................... 36 11.2 桥梁结构加固 ............................................................................................................ 36 11.3 桥梁复位 .................................................................................................................... 37 11.4 防止落梁装置 ............................................................................................................ 37 11.5 防止地基土液化、流动的措施 ................................................................................ 40 11.6 更换减（隔）震支座 ................................................................................................ 40 11.7 桥梁防碰撞加固 ........................................................................................................ 41 11.8 质量检验与验收 ........................................................................................................ 42 12 支座和伸缩装置更换 ...................................................................................................... 44 12.1 支座更换 .................................................................................................................... 44 12.2 伸缩装置更换 ............................................................................................................ 46 12.3 质量检验与验收 ........................................................................................................ 47 附录A 植筋施工方法 .......................................................................................................... 49 附录B 锚栓施工方法 .......................................................................................................... 52 本规范用词说明 ...................................................................................................................... 55 附件 《公路桥梁加固施工技术规范》（JTG DXX-2008）条文说明 ............................. 57 1 总则 .................................................................................................................................... 59 3 施工准备与施工组织 ........................................................................................................ 60 4 混凝土桥梁表层缺陷处理 ................................................................................................ 61 5 结构裂缝的处理 ................................................................................................................ 64

6 梁桥上部结构加固 ............................................................................................................ 66 7 拱桥加固施工 .................................................................................................................... 70 8 缆索体系桥梁的加固 ........................................................................................................ 72 9 钢桥及钢-混组合结构桥梁加固 ...................................................................................... 76 10 桥梁基础及下部结构加固 .............................................................................................. 77 11 桥梁抗震及防碰撞加固 .................................................................................................. 80 12 支座和伸缩装置更换 ...................................................................................................... 88