喀斯特地区桥梁桩基稳定性评价及施工决策优化设计

Stability Evaluation and Construction Decision Optimization Design of Bridge Pile Foundation in Karst Region

由于桥梁桩基工程属于地下隐蔽工程,工程质量除受岩土工程条件、基础与结构设计、桩土相互作用、施工工艺以及专业水平和经验等关联因素影响,另外喀斯特地区的地面塌陷,也会降低桥梁基础的稳定性,对桩基施工质量造成破坏。文章通过研究基于模糊算法的六冬水库大桥桩基施工项目实例,提出喀斯特地区桥梁桩基施工决策方法,构建喀斯特地区桥梁桩基稳定性模糊评价模型,优化了喀斯特地区桥梁桩基设计和施工过程,确保了决策的正确性,在提高桥梁基础稳定性和桩基施工质量方面发挥了积极作用。

Since the bridge pile foundation engineering belongs to the underground concealed project,the engineering quality is affected by the related factors such as geotechnical engineering conditions,foundation and structural design,pile-soil interaction,construction process,professional level and experience;and,the ground collapse in karst area will also reduce the stability of bridge foundation,causing the damage to the quality of pile foundation construction.Through studying the pile foundation construction example of Liudong Reservoir Bridge based on fuzzy algorithm,this article proposed the decision method for bridge pile foundation construction in karst area,constructed the fuzzy evaluation model of bridge pile foundation stability in karst area,optimized the design and construction process of bridge pile foundation in karst area,and ensured the correctness of the decision,which can play an active role in improving the bridge foundation stability and improving the quality of pile foundation construction.