现代交通技术2026，Vol.23Issue(2)：1-6,12,7.
桩周水泥土加固对单桩水平承载性能提升的模型试验研究
Model Experimental Study on Improving the Lateral Bearing Capacity of Single Pile Reinforced with Cement-treated Soil Around Pile
摘要
Abstract
Highway bridge pile foundations are often subjected to significant lateral loads induced by vehicle loads,wind loads,and seismic actions.To evaluate the effectiveness of cement soil reinforcement around piles in enhancing the lateral bearing capacity of a single pile,1g model tests were conducted on two types of piles with different stiffnesses using a self developed experimental apparatus.The test results indicate that the surrounding cement-treated soil can significantly improve the lateral bearing capacity of pile foundations.For single piles with a diameter of 5 cm,the ultimate lateral bearing capaci-ty increased by approximately 52.6％,while for piles with a diameter of 3 cm,it increased by about 75.8％.The cement-treated soil around the pile enhances the modulus of the surrounding soil,reduces the bending moment along the pile shaft,and shifts the location of the maximum bending moment upward.This not only limits the horizontal displacement of the soil near the pile head,but also protects the lower part of the pile structure.The improved piles exhibit greater soil resist-ance at smaller horizontal displacements,indicating a higher lateral response stiffness.The results can provide a reference for the reinforcement design of laterally loaded piles.关键词
桩基工程/水平承载力/水泥土/桩身弯矩/p-y 曲线Key words
pile foundation engineering/lateral bearing capacity/cement soil/pile bending moment/p-y curve分类
建筑与水利引用本文复制引用
唐显云,张爱军,侯爵,曾彪,何凌,成朝恒,章定文..桩周水泥土加固对单桩水平承载性能提升的模型试验研究[J].现代交通技术,2026,23(2):1-6,12,7.基金项目
国家自然科学基金项目(52078129) （52078129）
