盖梁预应力工程施工方案

1、盖梁预应力工程施工方案本工程0号上层（下层为地梁DL1）、15号为双层GL1盖梁;6号 为双层GL2盖梁，7、8、9、10号为单层GL1盖梁。GL1盖梁高度3m,长度25.3m,宽度3m,全桥设计GL1盖梁15根。GL2盖梁高度3m,长度27.123m,宽度3m,全桥设计GL2盖梁共2根。盖梁设计参数盖梁设计参数表3-1墩号012343678910位置h下上下上下上下I-.卜I-卜上下类型GL1/GL1GL1GL1GL1GL1GL2GL1GL1GL1GL119孔锚具18套36套36套36套36套36套48套18套18套1S套18套盖梁预应力参数盖架预应力参数 表3-2盖梁类型束号数量锚具规格1

2、00波纹管 下料钢绞线下料 长度控制应力控制力设计伸长量左端右端GL1N14束VLM15-1925510271101339MPa3562KN .78.278.2N25束VLM15-19255462714669.669.6GL2N16束VLM15-1927318289188383N26束VLM15-19273782897873.773.7323盖梁钢束几何要素和布管坐标表3-3表3-3GL1型盖梁N1型束钢束几何要素表NXYRBTA10.32.7000023.52.740.0690.74821.1714639.80.2680.1391.45921.17146415.50.26801391.459

3、21.17147521.82.740.0690.74821.17147625.02.70000GL1型盖梁N1型束钢束布管坐标表表3-4NXYNXYNXY10.32.7188.650.713517.150.89920.652.7199.150.5533617.651.09331.152.7209.650.4313718.151.28641.652.72110.150.3423818.651.48一52.152.7?10.650.2863?19.151.67462.652.72311.150.2614019.651.86773.152.682411.650.264120.152.0618_3,6

4、52.598 2512.15 0.264220.652.25594452.4482612.650.264321.152.448104.652.2552713.150.264421.652.598115.152.0612813.650.264522.152.68125.651.867一一 一一 ,2914.150.2614622.652.7136.151.6743014.650.2S64723.152.7146.651.483115.150.3424823.652.7157.151.2863215.650.4314924.152.7167.651.0933316.150.5535024.652.

5、717S 150.8993416.650.715125.02.7GL1型盖梁N2型束钢束几何要素表表3-5NXYRBTA10.32.1000023.02.140.1591.13831.7594836.150.1550.1981.42231.75948419.150.1550.1981.42231.75948522.32.140.1591.13831.75948625.02.10000GL1型盖梁N2型束钢束布管坐标表表3-6NXYNXYNXY10.32.1188.650.153517.150.1520.652.1199.150.153617.650.1531.152.1209.650.1537

6、18.150.16841.652.12110.150.153818.650.23652.152.092210.650.153919.150.35762.652.0222311.150.154019.650.53473.151.8872411.650.154120.150.77683.651.6782512.150.154220.651.07994.151.3882612.650.154321.151.388104.651.0792713.150.154421.651.678115.150.7762813.650.154522.151.887125.650.5342914.150.154622.

7、652.022136.1503573014.650.154723.152.090146.650.2363115.150.154823.652.1157.150.1683215.650.154924.152.1167.650.153316.150.155024.652.1178.150.153416.650.155125.02.1GL2型盖梁N1型束钢束几何要素表表3-7NXYRBTA0.32.700003.52.740.670.73620.854469.80.381.341.47220.8544617.3320381.341.47220.8544623.6322.740.670.73620.8

8、544626.8322.70000GL2型盖梁N1型束钢束布管坐标表表3-8NXYNXYNXY10.32.7209.5660.4843919.0660.96120.5662.72110.0660.3914019.5661.15131.0662.72210.5660.3314120.0661.34241.5662.72311.0660.3034220.5661.53252.0662.72411.5660.34321.0661.72262.5662.72512.0660.34421.5661.91373.0662.6892612.5660.34522.0662.10383.5662.6192713

9、.0660.34622.5662.29494.0662.4822813.5660.34723.0662.482GL2型盖梁N2型束钢束几何要素表表3-9NXYRBTA1032.1000023.02.140.1591.13831.7594836.150.1550.1981.42231.75948420.9820.1550.1981.42231.75948524.1322.140.1591.13831.75948626.8322.10000104.5662.294115.0662.103125.5661.913136.0661.722146.5661.532157.0661.342167.5661

10、.151178.0660.961188.5660.772199.0660.610104.5662.294115.0662.103125.5661.913136.0661.722146.5661.532157.0661.342167.5661.151178.0660.961188.5660.772199.0660.6102914.0660.33014.5660.33115.0660.33215.5660.33316.0660.3033416.5660.3313517.0660.3913617.5660.4843718.0660.613818.5660.7724823.5662.6194924.0

11、662.6895024.5662.75125.0662.75225.5662.75326.0662.75426.5662.75526.8322.7GL2型盖梁N2型束钢束布管坐标表表3-10NXYNXYNXY1032.1209.5660.153919.0660.1520.5662.12110.0660.154019.5660.1531.0662.12210.5660.154120.0660.17641.5662.12311.0660.154220.5660.25252.0662.0952411.5660.154321.0660.38262.5662.0382512.0660.154421.56

12、60.5773.0661.9152612.5660.154522.0660.82483.5661.7192713.0660.154622.5661.13194.0661.442813.5660.154723.0661.44104.5661.1312914.0660.154823.5661.719115.0660.8243014.5660.154924.0661.915125.5660.573115.0660.155024.5661.038136.0660.3823215.5660.155125.0662.095146.5660.2523316.0660.155225.5662.1157.066

13、0.1763416.5660.155326.0662.1167.5660.153517.0660.155426.5662.1178.0660.153617.5660.155526.8322.1188.5660.153718.0660.15199.0660.153818.5660.15盖梁预应力施工顺序本工程预应力结构整体施工顺序为：二层盖梁一二层箱梁 一一层盖梁一一层箱梁。盖梁预应力局部施工顺序为：施工前期准备一预应力筋下料、编束 一人工穿入预应力筋一预应力孔道安装、定位一安装锚垫板、螺旋 筋一检查孔道标高和孔道质量一浇筑混凝土一锚头孔道清理一安装 锚板一安装夹片一安装限位板、千斤顶和工具锚一按程序张拉、 测量和放张一锚头封锚一孔道灌浆一切除外露钢绞线余长一浇筑 封锚混凝土。预应力盖梁共用VLM15-19孔锚具318套，采用4台YDC4000千斤 顶双向双控张拉，根据设计要求，张拉顺序为先全部张拉完N2,再 全部张拉完Nlo具体顺序为：GL1型盖梁先单独张拉N2中间束， 再按由中向外的顺序将N2型束全部张拉完，然后张拉N1的中间2 束，再张拉N1的剩余2束。GL2型盖梁那么按照先N2再N1、先中 间后