高喷桩与钢管桩对既有桥梁基础联合防护施工技术研究

Study on Construction Technology of Combined Protection of High-pressure Jet Grouting Piles and Steel Pipe Piles for Existing Bridge Foundation

基于乐山市金口河区金龙大渡河大桥中墩基础防护工程实例,对高喷桩、钢管桩的施工特点、施工技术以及质量检查方法等进行了分析与总结。实践证明:高喷桩和钢管桩联合应用能够弥补各自的不足,取长补短,进而获得预期效果。所取得的经验可为类似工程施工提供参考。

Based on the example of the middle pier foundation protection of Jinlong Bridge on Dadu River in Jinkouhe District,Leshan City,this paper analyzes and summarizes the construction characteristics,construction technology and quality inspection methods of high-pressure jet grouting piles and steel pipe piles.Practice has proved that the combined application of high-pressure jet grouting piles and steel pipe piles can combine strong points of each other to make up for their mutual deficiencies to achieve the expected effect,which can provide reference for the construction of similar projects in the future.