复杂地质条件下桥梁钻孔灌注桩设计及施工关键技术研究  

Study on the Key Technology of the Design and Construction of Bored Pile Under Complex Geological Conditions

作　　者：韩玉成 HAN Yu-cheng(Xingtai Road and Bridge Construction Group Co.Ltd.,Xingtai 054000,China)

机构地区：[1]邢台路桥建设集团有限公司,河北邢台054000

出　　处：《工程建设与设计》2024年第9期227-229,共3页Construction & Design for Engineering

摘　　要：从桩端持力层选择、桩间距及布桩形式、桩总数计算、承载力计算以及下卧层验算等方面分析了复杂地质条件下桥梁钻孔灌注桩的设计要点。以某地质条件复杂的公路桥梁工程项目为背景,分析了桥梁钻孔灌注桩设计和施工的具有应用,根据项目地质条件特点,将成孔方案设计为冲击钻+回转钻机接力施工,并对该方案施工关键技术进行了研究。In this paper,the design points of bridge bored pile under complex geological conditions are analyzed from the aspects of pile end bearing layer selection,pile spacing and pile layout,pile total calculation,bearing capacity calculation and bottom layer checking calculation.Based on the background of a highway bridge project with complicated geological conditions,the paper analyzes the application of the design and construction of bored pile for bridge.According to the characteristics of the geological conditions of the project,the hole forming scheme is designed as the relay construction of hammer drill and rotary drill rig,and the key construction technologies of the scheme are studied.

关 键 词：桥梁桩基础 复杂地层 灌注桩 设计 施工 

分 类 号：U445.551[建筑科学—桥梁与隧道工程]