钻孔灌注桩钢护筒施工方案

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1、沈海复线宁德漳湾镇至连江浦口高速公路（宁德段）A1合同段钢护筒施工方案编制：复核：审批：中铁航空港集团沈海复线宁德漳湾至连江浦口高速公路A1项目经理部二零一三年十月17钢护筒施工方案一、工程概况本标段王坑特大桥4#墩~70#台桩基础设计有永久性钢护筒，桩长26m～66m不等，桩径以Ф1.3、Ф1.6、Ф1.8、Ф2.0为主。钻孔灌注永久桩钢护筒不参与结构受力，其高出承台底以上部分进行切割回收利用。钢护筒材质为Q235，壁厚分别为8mm、10mm、12mm，其内径为d+20cm，钢护筒顶标高以现场实际测量为准。二、钢护筒结构参数及工程量钢护筒的主要结构参数及工程量如下

2、表：王坑桥钢护筒的主要结构参数及工程量表K11+683.18王坑特大桥桩基统计表（左/右幅）墩台号设计桩径设计桩顶标高设计桩底标高桩长桩基钢护筒长度桩数（根）　左右左右左右左右左右　4#墩1.31.322-38-3840403.63.68根5#墩1.31.31.71.7-44.3-44.3464612.512.58根6#墩1.31.31.71.7-48.3-48.3505017178根7#墩1.321.71.7-43.3-43.3454514148根8#墩1.321.71.7-43.8-43.845.545.517.817.88根9#墩222.92.9-31.8-3

3、8.134.7418.28.24根10#墩221.81.8-39.2-39.241418.18.14根11#墩221.71.7-48.3-48.3505012.612.64根1712#墩2222-47.5-47.549.549.5884根13#墩221.81.8-47.7-47.749.549.510.510.54根14#墩221.81.8-48.2-48.2505010.210.24根15#墩221.81.8-51.2-51.2535314144根16#墩221.81.8-48.7-48.750.550.511.511.54根17#墩221.81.8-48.7-4

4、8.750.550.512124根18#墩221.81.8-50.7-50.752.552.513.713.74根19#墩221.81.8-51.2-51.2535314.614.64根20#墩221.91.9-50.6-50.652.552.515.515.54根21#墩2222-52.5-52.554.554.517.917.94根22#墩2222-58-58606017.117.14根23#墩222.12.1-57.9-57.9606019.119.14根24#墩222.22.2-57.8-57.8606021.221.24根25#墩222.22.2-59.8

5、-59.8626220.420.44根26#墩222.22.2-61.3-61.363.563.516.916.94根27#墩222.22.2-61.8-61.8646420204根28#墩222.12.1-62.4-62.464.564.523.123.14根29#墩1.81.82.22.2-62.3-62.364.564.521.521.54根30#墩1.81.82.32.3-63.7-63.7666620204根31#墩1.81.82.42.4-61.1-61.163.563.518.118.14根32#墩1.81.82.42.4-59.6-59.662621

6、6.116.14根33#墩1.81.82.42.4-58.6-58.6616119.919.94根1734#墩1.81.83.13.1-55.9-55.9595924.824.84根35#墩1.81.82.42.4-55.1-55.157.557.518.118.14根36#墩1.81.82.42.4-64.6-64.6676714.714.74根37#墩1.81.82.52.5-59-6161.563.514.414.44根38#墩222.82.8-53.7-58.256.56114.714.74根39#墩2222-59-59616115.115.14根40#墩2

7、21.71.7-69.3-71.87173.516.216.24根41#墩222.32.3-53.2-49.755.55215154根42#墩1.81.81.61.6-52.9-52.954.554.517.817.84根43#墩1.81.81.61.6-52.9-52.954.554.518184根44#墩1.81.81.61.6-55.9-55.957.557.518.418.44根45#墩1.81.81.91.9-52.1-52.1545422.122.14根46#墩1.81.81.81.8-53.7-53.755.555.519.819.84根47#墩1