北京交通大学学报2017，Vol.41Issue(4)：47-54,8.DOI:10.11860/j.issn.1673-0291.2017.04.007
桩间距和布桩形式对微型桩受力的影响
Effect of pile spacing and pile arrangement on the stress of micropile supporting system
摘要
Abstract
The models of independent micropile,micropile with coupling beams and micropile with pile cap are built up,and the mechanical characteristics of all these three types of micropile supporting systems are analyzed under the condition of different pile arrangements and pile spacings.The results show that the anti-slide effect of micropile with pile cap is better under the same load condition,whose maximum bending moment is 1.36 and 1.35 times as that of independent micropile and micropile with coupling beams respectively.The maximum bending moment of micropiles with plum blossom shape arrangement is almost 1.02 times as that of micropiles with rectangular symmetry arrangement.The pile spacing of 1.5～2.0 m is in favor of fully exerting of the anti-slide effect of micropiles.Thus,it is concluded that the best pile arrangement form is the micropile with pile cap with the arrangement of plum blossom shape,and the recommended pile spacing is 1.5～2.0 m.关键词
边坡加固/微型桩支护体系/布桩形式/桩间距/受力机理Key words
slope reinforcement/micropile supporting system/pile arrangement/pile spacing/stress mechanism分类
建筑与水利引用本文复制引用
李鑫,李昌龙,白明洲,龙万学,邱树茂,于宁..桩间距和布桩形式对微型桩受力的影响[J].北京交通大学学报,2017,41(4):47-54,8.基金项目
国家自然科学基金(C16A300200)National Natural Science Foundation of China(C16A300200) （C16A300200）
