首页|基于有限元模拟的上饶黏土质切坡抗滑桩加固方案评价与优化

基于有限元模拟的上饶黏土质切坡抗滑桩加固方案评价与优化

Proposal Evaluation and Optimization of Anti-slide Piles Reinforcement on Clay Slopes in Shangrao Area Based on Finite Element Simulation

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以江西省上饶市典型饱和含水率黏土质切坡为研究对象,建立一组切坡抗滑桩加固有限元模型,分析抗滑桩桩长、桩径以及桩位等因素对切坡稳定性的影响.研究表明,抗滑桩加固能够有效地减少这类黏土质边坡的塑性变形,减小边坡总滑移量,提高边坡的稳定性;在10～18 m桩长范围内,边坡安全系数与桩长呈正相关关系,但当桩长超过18 m后,边坡安全系数增长变缓,抗滑桩加固效果并没有出现明显的变化;当桩径在0～2 m之间递增时,边坡总滑移量呈不断减小,但当桩径超过2 m后,边坡总滑移量变化并不明显,表明此时增加桩径对边坡的抗滑效果增加不明显;随着桩位至边坡坡脚处的距离逐渐减小,边坡的总滑移量也在不断减小.因此在设计抗滑桩时可综合考虑桩长,桩径与桩位,以便在满足边坡加固需求的同时还能达到经济效应,减少对材料的浪费,降低施工的难度.
Taking the typical saturated moisture content clay slope of Shangrao,Jiangxi Province as the research object,a set of finite element model of anti-slide piles was established,and the influence of pile lengths,diametures and positions on the stability of anti-slide piles was analyzed.The research results show that the reinforcement of anti-slide piles can ef-fectively reduce the plastic deformation of this kind of clay slopes,reduce the total slip amount of slopes,and improve the stability of slopes.Within the range of 10-18m pile length,the slope safety factor is positively correlated with the pile length,but when the pile length exceeds 18 m,the factor of slope safety increases slowly,and the reinforcement effect of anti-slide pile does not change significantly.When the pile diameter increases between 0 and 2 m,the total slip displace-ment of the slope decreases.However,when the pile diameter exceeds 2 m,the total slip of the slope is not obvious,indi-cating that the anti-slip effect of the slope is not significantly increased with the increase of the pile diameter at this time.As the distance between the pile position and the foot of the slope gradually decreases,the total slip of the slope is also decreasing.It is suggested to coordinate the length,diameter and pile position in the design of anti-slide piles,so as to meet the reinforcement needs of cut slope while achieving economic effect,reducing the waste of materials and the diffi-culty of engineering works.

clay cut slopeanti-slide pilefinite element simulationstability of slopeShangrao City

石祖峰、毕晨洁、吴珍云、但迈、李希星、欧阳海金、陈振平

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江西省地质局第八地质大队,江西上饶 334000

东华理工大学地球科学学院,江西南昌 330013

江西省空间生态建设有限公司,江西南昌 330025

江西省地质局物化探大队,江西南昌 330025

东华理工大学水资源与环境工程学院,江西南昌 330013

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黏土质切坡 抗滑桩 有限元模拟 边坡稳定性 上饶市

江西省防震减灾与工程地质灾害探测工程研究中心开放基金江西省教育厅科学技术研究项目江西省教育厅科学技术研究项目江西省大气污染成因与控制重点实验室开放基金东华理工大学博士启动基金

SDGD202108GJJ210702GJJ200718AE2108DHBK2019053

2024

10.16536/j.cnki.issn.1671-1211.2024.02.014

资源环境与工程
湖北省地质学会,长江水利委员会长江勘测规划设计研究院,中国冶金地质勘查工程总局中南局,湖北省地质科学研究所

资源环境与工程

影响因子：0.283
ISSN：1671-1211
年,卷(期)：2024.38(2)
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