溶蚀透水地质大推力拱座施工关键技术
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摘要
以柳州市官塘大桥为例,从基坑支护方案设计、支护结构施工、止水施工、基坑开挖施工、基底验收及处理、基坑监测等方面,详细阐述了透水性大跨度提篮钢箱拱桥拱座施工的关键技术。该技术既解决了大跨度拱桥拱座基础深基坑支护与开挖、止水施工难题,又提高了施工进度、确保了施工过程中的安全,为今后类似工程提供了成功范例和可借鉴经验。
Taking Guantang Bridge in Liuzhou City as an example,this paper elaborates the key technology of arch abutment construction of permeable long-span steel box arch bridge from the aspects of foundation pit support scheme design,support structure construction,water stop construction,foundation pit excavation construction,foundation pit acceptance and treatment,and foundation pit monitoring.This technology not only solves the problems of deep foundation pit support and excavation and water stop construction of arch base of long-span arch bridge,but also improves the construction progress and ensures the safety in the construction process.It provides a successful example and reference experience for similar projects in the future.
Taking Guantang Bridge in Liuzhou City as an example,this paper elaborates the key technology of arch abutment construction of permeable long-span steel box arch bridge from the aspects of foundation pit support scheme design,support structure construction,water stop construction,foundation pit excavation construction,foundation pit acceptance and treatment,and foundation pit monitoring.This technology not only solves the problems of deep foundation pit support and excavation and water stop construction of arch base of long-span arch bridge,but also improves the construction progress and ensures the safety in the construction process.It provides a successful example and reference experience for similar projects in the future.
引文
[1]刘艳滨.不良地质深基坑围护结构设计优化思路[J].铁道标准设计,2004(1):70–72.
[2]田伟,吴小雨,沙仁明,等.山区陡崖拱座垂直开挖技术研究[J].铁道建筑技术,2018(7):47–51.
[2]田伟,吴小雨,沙仁明,等.山区陡崖拱座垂直开挖技术研究[J].铁道建筑技术,2018(7):47–51.