深厚填土高边坡三排桩刚架支挡结构受力分析
摘要:针对深厚填土高边坡中单排悬臂桩、桩锚支护、双排桩、h型桩等支护结构存在的不足,分析探讨了三排桩刚架支挡结构。研究表明,三排桩刚架支挡结构用于支护深厚填土高边坡,可以同时起到“收坡”、“固脚”作用,既能节约用地,又可以有效发挥支挡作用。通过工程实例,分别采用位移法、MIDAS GTX NX有限元软件进行计算分析,对比结果表明,采用位移法简化方法可近似计算三排桩刚架支挡结构的弯矩。三排桩钢架支挡结构设计时应加强前排桩和连梁的截面刚度,保证节点位置刚性连接,刚架结构分级高度应大致均匀布置,且应尽量减少后排桩悬臂段高度。
Abstract:The supporting structures of single row cantilever pile, pile-anchor support, double row pile, H-type pile and other supporting structures have deficiencies in high slope with deep and thick backfill soil. In view of the deficiencies, three-row pile rigid frame retaining structure was analyzed. In supporting deep fill high slope, the three-row pile rigid frame retaining structure can simultaneously play the role of "retracting slope" and "reinforce the foot of the slope". The application of this structure could save land and realize retaining effectively. Through engineering examples, displacement method and MIDAS GTX NX finite element software were used for calculation and analysis. The comparison results show that the simplified displacement method can be used to approximate the bending moment of three-row pile rigid frame retaining structure. The section rigidity of front pile and connecting beam should be strengthened in the design, and ensure that the nodes are rigidly connected. The grading height of rigid frame structure should be roughly uniform and the cantilever height of rear pile should be reduced as much as possible.
中文标题:
深厚填土高边坡三排桩刚架支挡结构受力分析
Stress Analysis of Three-row Pile Rigid Frame Retaining Structure in High Slope with Deep and Thick Backfill Soil
作者:
石洋海1,,赵小云2,王贤能1,周伦才2,王玥2
Shi Yanghai1,,Zhao Xiaoyun2,Wang Xianneng1,Zhou Luncai2,Wang Yue2
作者简介:石洋海,男,1984年生,汉族,湖南衡阳人,硕士,高级工程师,主要从事岩土工程设计、地质灾害治理设计工作。E-mail:123889156@qq.com
通讯地址:
1.深圳市工勘岩土集团有限公司,广东深圳 518026 2.中国科学院近代物理研究所,甘肃兰州 730000
1.ShenzhenGeokeyGroupCo.,Ltd.,Shenzhen518026,Guangdong,China 2.InstituteofModernPhysics,ChineseAcademyofSciences,Lanzhou,730000,Gansu,China
中图分类号:P 642.22
doi:10.3969/j.issn.1007-2993.2023.02.012
出版物:岩土工程技术
收稿日期:2022-02-26
修回日期:2022-06-02
录用日期:2022-12-09
刊出日期:2023-04-08
关键词:三排桩,刚架,支挡结构,位移法,填土高边坡
Key words:three-row pile,rigid frame,retaining structure,displacement method,high slope with backfill soil
文档包含图片数量:图片(19)张
文档包含表格数量:表格(3)个
参考文献:
[1]GB 50330—2013 建筑边坡工程技术规范 [S]. 北京: 中国建筑工业出版社, 2013.
[2]邱红胜,周子煜. 基于p-y曲线法的门式双排桩支护变形研究[J]. 大连交通大学学报,2022,43(1):77-81. doi: 10.13291/j.cnki.djdxac.2022.01.015
[3]杨 波,郑颖人,赵尚毅. 双排抗滑桩在三种典型滑坡的计算与受力规律分析[J]. 岩土力学,2010,31(S1):237-244.
[4]黄汉盛,罗江波. 非常规双排桩在山地建筑边坡支护中的应用[J]. 工程勘察,2016,(6):39-46.
[5]邱俊杰. 高边坡路堑双排桩支挡结构理论计算与数值模拟研究[D]. 成都: 西南交通大学, 2019.
[6]刘青松,矫伟刚,盛志战. 双排桩冠梁刚度分析及抗倾覆优化计算[J]. 工程勘察,2020,(6):19-23.
[7]宫凤梧,刘 晨,郭文娟,等. 双排桩双梁组合支护刚度计算的改进与位移分析[J]. 水文地质工程地质,2022,49(1):109-116.
[8]黄伟达. 高边坡三排桩的工作性状及简化算法[J]. 工程勘察,2017,(12):9-14.
[9]朱 华,邓成发. 门架式双排桩围护结构的三维有限元分析[J]. 工程勘察,2011,(1):20-24.
基金项目:
基金项目:国家“十二五”重大科技基础设施项目(编号:发改高技[2015]3185和3187号)
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