岩溶地区大跨度桥梁施工溶洞处理技术  

Karst Cave Treatment Technology for Large Span Bridge Construction in Karst Area

作　　者：谭勇 TAN Yong(Hunan Road and Bridge Construction Group Co.Ltd.,Changsha 410000,China)

机构地区：[1]湖南路桥建设集团有限责任公司,长沙410000

出　　处：《工程建设与设计》2022年第17期185-187,共3页Construction & Design for Engineering

摘　　要：为了提高溶洞处理技术,保证岩溶地区大跨度桥梁的施工质量,论文研究岩溶地区大跨度桥梁施工溶洞处理技术。通过清孔勘查分析溶洞发育情况,找出溶洞中需要处理的填充物;处理溶洞顶板与填充物,提高桥梁桩基的施工稳定性,进而实现岩溶地区大跨度桥梁施工溶洞的安全处理。实例分析结果验证了设计技术的溶洞处理效果较好,危险性评估指标均高于0.995,能够保证岩溶地区大跨度桥梁的施工质量。In order to improve the karst cave treatment technology and ensure the construction quality of large span bridge in karst areas,the treatment technology of large span bridge construction in karst areas is studied.By exploring and analyzing the development of karst cave,find out the fillers to be treated in the karst cave,treat the karst cave roof and fillers,improve the construction stability of bridge pile foundation,and then realize the safe treatment of large-span bridge construction in karst areas.The example analysis results verify that the karst cave treatment effect of the design technology is good,and the risk assessment index is higher than 0.995,which can ensure the construction quality of large-span bridge in karst areas.

关 键 词：岩溶地区 大跨度 桥梁 施工 溶洞 处理技术 

分 类 号：U445.4[建筑科学—桥梁与隧道工程] U443.15[交通运输工程—道路与铁道工程]