h型抗滑桩和悬臂式双排抗滑桩的力学特性分析
Analysis on Mechanical Characteristics of h-Type Anti-Slide Piles and Cantilevered Double-Row Anti-Slide Piles
何刚 1郑琦七 2杨松 1李登峰 1梅雪峰 3李泽洲4
作者信息
- 1. 中国五冶集团有限公司,成都 610000
- 2. 中交第二航务工程局有限公司,武汉 430040
- 3. 山东理工大学建筑工程学院,山东淄博 255049
- 4. 中铁十一局集团第五工程有限公司,重庆 400037
- 折叠
摘要
为探索h型抗滑桩和双排抗滑桩中较优的抗滑结构形式,利用有限元软件MIDAS/GTS,分别建立了 h型抗滑桩和双排抗滑桩的三维有限元分析模型,并对比分析了两种抗滑桩结构的桩身位移、内力分布以及坡体支挡效果.结果表明:1)h型抗滑桩与双排桩抗滑桩在桩身位移、内力均存在显著差异.在协调前、后排桩弯矩、剪力和减小桩身位移方面,h型抗滑桩较双排桩表现更优;2)h型抗滑桩支护后,较双排抗滑桩支护更显著,边坡稳定安全系数提高了 21.8％、最大剪应变降低了 63.6％;3)理论计算的h型抗滑桩前后排桩内力分布,较双排桩更合理,表明了 h型抗滑桩协调内力的优势.
Abstract
To explore a better anti-sliding structure between h-type anti-slide piles and cantilevered double-row anti-slide piles,the finite element software MIDAS/GTS was used and the three-dimensional finite ele-ment analysis models for h-type anti-slide piles and cantilevered double-row anti-slide piles were construc-ted.Then,the displacement,internal force of piles and slope support effect of the two anti-slide pile struc-tures were compared and analyzed.The results showed that:1)There were significant differences between the two types of anti-slide pile systems in terms of displacement and internal force of piles.Compared with cantilevered double-row anti-slide piles,h-type anti-slide piles were better to coordinate flexural moment and shear force of the front and rear piles,as well as displacement of piles.2)Compared with cantilevered double-row anti-slide piles,the support effect of h-type anti-slide piles was more significant.The safety fac-tor of slope stability increased by 21.8％,simultaneously,the maximum shear strain decreased by 63.6％.3)Compared with the cantilevered double-row anti-slide piles,the theoretical calculations on internal force of the front and rear piles in the h-type anti-slide pile systems were more reasonable.It also showed the ad-vantage of h-type anti-slide piles in coordination of the internal force.
关键词
h型抗滑桩/双排抗滑桩/数值模拟/力学特性/理论计算Key words
h-type anti-slide pile/double-row anti-slide pile/numerical simulation/mechanical property/theoretical calculation引用本文复制引用
基金项目
山东省自然科学基金(ZR2021QE209)
出版年
2024
NETL
NSTL
万方数据