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石灰岩地区因其地质条件复杂,岩溶(溶洞、溶沟、溶槽)、构造带(断层、裂隙)发育,地下水丰富,严重影响公路桥梁桩基础施工质量、进度及安全。尤其是对中大桥的桩基础,如果对岩土工程条件认识不足,在施工中将遇到很多意想不到的地质现象,弄得你措手不及,造成严重的质量安全隐患和经济损失。本文通过灰岩地区公路桥基础的施工成败经验的分析,供在石灰岩区进行桥梁桩基础施工参考。
Due to the complicated geological conditions, limestone areas have developed karst (karst caves, ditches and trenches), structural zones (faults and fissures) and abundant groundwater, which seriously affect the quality, progress and safety of the construction of highway bridges and piles. Especially for the pile foundation of Zhongda Bridge, if there is not enough understanding of geotechnical conditions, many unexpected geologic phenomena will be encountered in the construction, leaving you unprepared and causing serious quality and safety risks and economic losses. In this paper, through the limestone area highway bridge foundation construction experience or failure analysis for the limestone area for the construction of bridge pile foundation reference.