摘要
岩溶地区的桥梁桩基设计及处治是长期困扰设计人员的技术难题。文章以广西桂平市K1+825.5桂平郁江二桥为工程实例,根据该桥前期的勘察成果及施工现状,通过孔内CT层析检测设计,对已完成的桥梁桩基质量以及桩底、桩周的岩溶发育贯通情况进行检验,对岩溶发育区顶板之上的桩基进行顶板稳定性验算,并提出了注浆加固处治设计方案。
Bridge pile foundation design and treatment in karst region are the technical problems always perplexing the designers.Taking Guangxi Gulping K1 ＋ 825. 5 Gulping Yujiang II Bridge as the engi- neering example,according to the pdmary survey results and construction status of this bridge, and through CT chromatography detecUon design inside the holes,this article inspected the quality of bridge pile foundation already being completed as wall as the karst development thorough situation at the bot- tom of piles and around the piles, conducted the roof-plate stability checking for the pile foundation above the top plate in karst development area,and proposed the grouting reinforcement treatment de- sign program.
出处
《西部交通科技》
2016年第5期43-46,共4页
Western China Communications Science & Technology
关键词
岩溶
桥梁桩基
CT层析检测
顶板稳定性验算
注浆加固处治
Karst
Bridge pile
CT chromatography detection
Roof-plate stability computations
Groutingreinforcement treatment
