山东大学学报 (工学版) ›› 2023, Vol. 53 ›› Issue (6): 92-99.doi: 10.6040/j.issn.1672-3961.0.2022.258
• 土木工程 • 上一篇
江健宏1,舒晓锐1,刘志鲲2*,孙杰3,荆树举2,张宏博2
JIANG Jianhong1, SHU Xiaorui1, LIU Zhikun2*, SUN Jie3, JING Shuju2, ZHANG Hongbo2
摘要： 为验证废旧轮胎碎片(tire derived aggregate, TDA)复合土作为锚拉式轻型挡土墙台背填料的可行性,使用竖向锚定板拉拔试验装置,开展20组室内拉拔模拟试验,研究不同竖向荷载和不同TDA质量分数时复合土中竖向锚定板极限承载性能。试验结果表明,TDA复合土竖向锚定板拉拔承载力-位移曲线可划分为线性递增阶段、塑性剪切破坏阶段及硬化阶段;锚定板极限承载力受竖向荷载与TDA质量分数(0~20%)的影响显著,其随竖向荷载的增大呈现非线性增大趋势,在低竖向荷载水平下,锚定板极限承载力的提升效果更明显。依据试验结果,构建适用于TDA复合土中竖向锚定板极限拉拔承载力理论模型,并对试验结果进行锚定板极限承载力的合理性验证。研究成果可为锚拉式轻型挡土墙的结构优化及工程应用提供依据。
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