摘要
为了研究群桩在不同排列方式下的水平承载性能差异,通过工程实例设计2组带承台群桩(分别为一字型三桩和三角形三桩)进行现场足尺水平承载力试验,并与现场同规格单桩的水平静载结果进行对比。结果表明:与单桩相比,群桩的基桩水平承载力有显著提高;与三角形排列的群桩相比,一字型排列群桩的水平承载力有较明显的提高,认为一字型排列群桩能更充分地发挥群桩的水平承载性能。对群桩的前后桩破坏情况进行分析,结果表明前排桩受力略大于后排桩。
In order to study the difference of horizontal bearing performance under different arrangement modes of group piles,two groups of pile caps were designed by engineering examples,which wereⅠ-shape and triangle-shape piles respectively.The field test of full-scale horizontal bearing capacity was carried out and compared with the results of the single-story piles on the site.The results show that the horizontal bearing capacity of the group piles is significantly improved compared with the single piles.Compared with the triangle-shape piles,the horizontal bearing capacity of theⅠ-shape piles is obviously improved.It is concluded that theⅠ-shape group piles can fully exert the horizontal bearing capacity.The damage analysis of the piles shows that the front piles are slightly stronger than the rear ones.
作者
李强
贺武斌
郭昭胜
LI Qiang;HE Wubin;GUO Zhaosheng(College of Civil Engineering, Taiyuan University of Technology, Taiyuan 030000, China)
出处
《中国科技论文》
CAS
北大核心
2020年第6期617-621,共5页
China Sciencepaper
基金
国家自然科学基金资助项目(514083952)
山西省自然科学基金资助项目(201601D011055)。
关键词
群桩
一字型三桩
三角形三桩
水平承载力
现场试验
前排桩
后排桩
group piles
Ⅰ-shape piles
triangle-shape piles
horizontal bearing capacity
field test
front piles
rear piles
