| 输电线路杆塔基础微型桩原型试验研究 |
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| 引用本文： | 郑卫锋,苏荣臻,鲁先龙,程永锋.输电线路杆塔基础微型桩原型试验研究[J].辽宁工程技术大学学报(自然科学版),2010,29(1). |
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| 作者姓名： | 郑卫锋 苏荣臻 鲁先龙 程永锋 |
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| 作者单位： | 国网北京电力建设研究院,北京,100055 |
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| 基金项目： | “十一五”国家科技支撑计划基金资助项目(2006BAA02A08) |
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| 摘 要： | 针对微型桩在输电线路杆塔基础中的应用问题,采用现场试验方法,通过对软土地基中微型桩单桩、群桩的抗拔、水平、抗压现场试验,研究其载荷-位移特性、施工工艺等,以期为微型桩在输电线路中的应用提供设计依据。试验结果表明:二次注浆工艺能明显提高微型桩单桩的极限承载力,带钢管的微型桩能显著增强其抗倾覆能力。
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| 关 键 词： | 微型桩 杆塔基础 现场试验 极限承载力 软土地基 |
Field test on micropiles in foundation of transmission line tower |
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| ZHENG Weifeng,SU Rongzhen,LU Xianlong,CHENG Yongfeng.Field test on micropiles in foundation of transmission line tower[J].Journal of Liaoning Technical University (Natural Science Edition),2010,29(1). |
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| Authors: | ZHENG Weifeng SU Rongzhen LU Xianlong CHENG Yongfeng |
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| Affiliation: | Beijing Electric Power Construction Research Institute of SGCC;Beijing 100055;China |
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| Abstract: | As a new environmental friendly foundation in soft clay ground,a micropile has the advantages of high bearing capacity,easy installation and less space usage. It can be used in the foundation of transmission towers. This paper presents a series of field tests on uplift loading,lateral loading and compression loading of single piles and a group of piles. The study shows that the secondary grouting can dramatically increase the ultimate bearing capacity of single pile. Also,the overturning resistance can be i... |
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| Keywords: | micropiles transmission tower foundation field test ultimate bearing capacity soft clay |
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