市政技术2025，Vol.43Issue(11)：10-17,8.DOI:10.19922/j.1009-7767.2025.11.010
光伏支架微孔灌注桩倾斜抗拔承载特性研究
Research on the Inclined Pull-Resistance Bearing Characteristics of Photovoltaic Support Micro-hole Cast-in-place Piles
摘要
Abstract
Being affected by wind loads,the photovoltaic support structure will exert an inclined pull-resistance force on its micro-hole cast-in-place pile foundation.Long-term action will have an impact on its service perfor-mance.Through on-site pull-out tests,the load-displacement variation law of micro-hole cast-in-place piles was analyzed under pull-out action.And based on this rule,an indoor model scale test was constructed.The research results show that the on-site pull-out load-displacement curve of micro-hole cast-in-place piles is generally steeply deformed.At the initial stage of loading,the displacement at the top of the pile increases linearly with the increase of the pull-out load;With the continuous increase of the uplift load,the increase of the displacement at the top of the pile becomes significantly larger;When the pull-out loads are the same,the displacement of the pile shaft grad-ually decreases with the increase of pile length.In indoor model tests,the inclination angle directly affects the shape of the load-displacement curve,the force of the pile body and the instability mode of the pile.When the load incli-nation angle is 45°and 90°,all the corresponding curves show the hyperbolic linear shape characteristics of rising-peak-falling.When the load inclination angle is 0°,the corresponding curve shows a linear growth characteristic.Under the same pile length,the curve has no peak when the load inclination angle is smaller,and the peak feature of the curve is obvious when the load inclination angle is larger.When the load inclination angles are the same,it shows that the longer the pile length,the smaller the displacement of the pile body under the same load conditions.关键词
光伏/微孔灌注桩/现场试验/模型试验/荷载倾角/桩长影响Key words
photovoltaic/micro-hole cast-in-place pile/field test/model test/load inclination angle/the influence of pile length分类
建筑与水利引用本文复制引用
李睿智,陈道林,俞东波,刘海峰,马发明,许杨洵..光伏支架微孔灌注桩倾斜抗拔承载特性研究[J].市政技术,2025,43(11):10-17,8.基金项目
国家自然科学基金项目(52208341) （52208341）
