摘要
结合正习高速某特大桥的实际工程,该地区属于喀斯特地质地貌,已形成诸多溶洞,蕴含着丰富的地下水、地表水和不同类型的风化与残积土层。在此种困难多且不确定性因素下,经过专家论证,结合现场实际情况,桥梁基础需要采用人工挖孔桩,着重对挖孔的施工过程进行讨论。使超深人工挖孔桩在喀斯特地区挖孔经过施工工艺、安全方面进行控制从而达到设计要求,也可供同类型工程参考借鉴。
Combined the actual project of a tunnel bridge of Zhengxi Expressway,this area belongs to karst geological landforms,and many karst caves have been formed.It contains abundant groundwater,surface water and different types of weathered and residual soil layers.Under such difficult and uncertain factors,after the expert’s demonstration and the actual situation on site,the bridge foundation needs to use artificial digging piles,focusing on the construction process of digging.The ultra-deep manual digging piles in the Karst area can be controlled by construction technology and safety to meet the design requirements,and can also be used for reference for similar projects.
作者
池卓航
吴新星
戴伟权
袁雄彪
王丰
蔡方明
Chi Zhuohang;Wu Xinxing;Dai Weiquan;Yuan Xiongbiao;Wang Feng;Cai Fangming(China Construction Fourth Engineering Division Corp.Ltd.Guangzhou 510665,China;China Construction Fourth Engineering Division South China Construction Co.,Ltd.Guangzhou 510663,China)
出处
《广东土木与建筑》
2020年第12期74-77,共4页
Guangdong Architecture Civil Engineering
关键词
喀斯特
超深
施工技术
安全控制
人工挖孔桩
karst
super deep
construction technology
safely control
manually digging pile
