长江科学院院报 ›› 2014, Vol. 31 ›› Issue (3): 111-114.DOI: 10.3969/j.issn.1001-5485.2014.03.019

• 数值分析 • 上一篇    下一篇

土工加筋直升机临时起降平台数值模拟分析

马 超, 徐 倩, 樊 军   

  1. 解放军理工大学 野战工程学院, 南京 210007
  • 收稿日期:2013-11-13 修回日期:2014-03-07 出版日期:2014-03-07 发布日期:2014-03-07
  • 通讯作者: 徐 倩(1987-), 女, 江苏邳州人, 博士研究生, 主要从事道路交通安全研究, (电话)18061737816(电子信箱) 1058427910@qq.com。
  • 作者简介:马 超(1987-), 男, 河南南阳人, 助理工程师, 硕士研究生, 主要从事道路交通安全工程研究, (电话)18650778102(电子信箱)410317157@qq.com。

Numerical Analysis of Geosynthetic Reinforced Temporary Helicopter Landing Platform on Soft Clay

MA Chao, XU Qian, FAN Jun   

  1. College of Field Engineering, PLA University of Science and Technology, Nanjing 210007, China
  • Received:2013-11-13 Revised:2014-03-07 Online:2014-03-07 Published:2014-03-07

摘要: 为研究软土地基直升机临时起降平台的安全保障性能, 采用三维数值模拟技术, 建立软土地基与直升机临时起降平台的有限元模型, 分析比较不同加筋层数及软土地基材料的临时起降平台在直升机荷载作用下的最大沉降、土工布受力、填土最大应力以及冗余应力的变化情况, 研究表明在4层加筋的情况下, 起降平台的各指标值最小;并且各指标值随地基土弹性模量的增加而呈指数递减, 土工加筋直升机临时起降平台适用于弹性模量大于1.5 MPa的地基土。

关键词: 软土地基, 土工加筋, 直升机临时起降平台

Abstract: To research the safety performance of helicopter’s temporary landing platform on soft foundation, a 3-D finite element model of soft soil foundation and temporary helicopter landing platform was established. The variations of maximum settlement of the landing platform, geotextile force, maximum stress of the filling soil and redundant stress of different reinforced layers and soft soil materials under helicopter load were analyzed. Results show that in the presence of four layers of reinforcement, the indicators of the landing platform reached the minimum, and reduced exponentially with the increasing of foundation soil’s elastic modulus. The geogrid-reinforced emergency landing platform for helicopters could be applied to soft soil foundation with elastic modulus higher than 1.5MPa.

Key words: soft soil foundation, geosynthetic reinforcement, temporary helicopter landing platform

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