南京第四大桥索塔、锚锭工程交工验收质量检测大纲.pdfVIP

南京长江第四大桥索塔、锚碇工程

交工验收质量检测

检测工作大纲

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宁宿徐南延高速公路工程交工验收质量鉴定检测工作大纲

江苏省交通科学研究院股份有限公司

二00一一年九月

江苏省交通规划设计院有限公司工程质量检测中心1

南京长江第四大桥索塔、锚碇工程交工验收质量检测工作大纲

目录

一、工程概况······························································································1

二、检测依据······························································································2

三、检测工作内容及检测频率·········································································3

四、主要测量方案························································································7

五、检测组织安排························································································9

六、主要检测仪器设备··················································································9

六、质量保证措施及安全保证措施································································12·

七、其他·································································································13·

南京长江第四大桥索塔、锚碇工程交工验收质量检测工作大纲

南京长江第四大桥索塔、锚碇工程交工验收质量检测工作大纲

一、工程概况

南京长江第四大桥是国道主干线重要组成部分，是国务院批准的南京市城市总体

规划的“五桥一隧”过江通道之一。项目位于南京长江二桥下游10公里处，起自六合

区横梁镇东，接宁通高速公路和即将开工建设的绕越高速公路东北段，止于江宁区麒麟

镇，接南京绕越高速公路东南段和沪宁高速公路，建成后将与南京三桥一起形成南京的

大外环过江通道。全线按双向六车道高速公路标准建设，项目全长28.996公里。其中

北接线长13.078km，跨江大桥长约5.437km，南接线长约10.481km，共设横梁、龙袍、

栖霞、麒麟4处互通立交。跨江大桥为主跨1418米三跨吊悬索桥。项目概算总投资为

68.57亿元，核批建设工期5年。

南、北主塔A1、A2标分别由中交第二航务工程局和中铁大桥局承建。南塔设计

采用48根直径3.2m—2.8m变直径钻孔灌注桩基础，桩长约70m。北塔基础采用38根

直径2.8m钻孔灌注桩基础，桩长约120m，为长江桥梁桩长之最。南北索塔承台为哑铃

形，塔柱为钢筋混凝土结构，塔高223.6m。考虑到南、北主塔均位于航道边缘，存在

船撞风险，主塔基础采取了永久防撞套箱与施工临时套箱结合设计的方案，既保证了桥

墩安全，又大大降低了工程造价。

南锚碇A3标由中交第二航务工程局承建。基础设计在国内首次采用了“∞形”地连

墙支护结构体系，长82m，宽59m，基坑开挖深50米。

北锚碇