PHC管桩在湿陷性黄土中的承载特性分析及应用  

Analysis and Application of PHC Pipe Pile in Collapsible Loess

作　　者：王娟[1] 王兴科[1] WANG Juan;WANG Xingke(Shaanxi Railway Engineering Vocational College,Weinan 714099,China)

机构地区：[1]陕西铁路工程职业技术学院,陕西渭南714099

出　　处：《粉煤灰综合利用》2020年第5期31-34,共4页Fly Ash Comprehensive Utilization

摘　　要：对PHC管桩在湿陷性黄土中的承载特性进行了系统分析,结合渭南市地区的工程实例进行实践应用。通过低应变桩身完整性测试,验证了采用旋挖机引孔,压桩机压入成桩的施工方法保障了桩身的完整性;通过单桩静荷载试验,验证了实际的单桩竖向静载荷极限承载力取值与设计值的符合度。Based on the practical application of a project in Weinan City,the bearing characteristics of PHC pipe pile in collapsible loess were systematically analyzed.Through the integrity test of low strain pile body,it was verified that the construction method of using the rotary excavator to guide the hole and driving the pile machine into the pile body ensures the integrity of the pile body;through the static load test of single pile,the composite degree of the ultimate vertical load bearing capacity of a single pile and the design value was verified.

关 键 词：PHC管桩 湿陷性黄土 极限承载力 静载荷试验 

分 类 号：TU473[建筑科学—结构工程]