对不同角度的道穿越基的影响分析
Zhongxi Tian1, Zhiyu Zhang2, Guangzhan Zhang3
1College of Architecture and Civil Engineering, Liaocheng University, Liaocheng, 252000, Shandong, China.
Scientific reports
|February 8, 2025
概括
靠近堆基础的盾牌道导致地面沉积和堆变形. 最佳的交叉角度最大限度地减少了表面沉积和水平堆位移,这对于城市基础设施的保护至关重要.
科学领域:
- 地质技术工程 地质技术工程
- 道工程工程 道工程
- 结构工程 结构工程
背景情况:
- 使用盾牌方法挖掘城市地铁道可能会扰乱周围的层.
- 在现有建筑堆基础附近挖掘道可能会导致堆曲和承载能力降低.
- 底座堆是缓解这些问题的常见解决方案.
研究的目的:
- 分析屏蔽道穿越对表面沉积和堆基础变形的影响.
- 为了评估屏蔽道和支的基之间的不同交叉角度的影响.
- 为优化道战略提供见解,以尽量减少对环境的影响.
主要方法:
- 使用有限元分析软件 (midas GTS NX) 来创建3D计算模型.
- 模拟的盾牌道穿越通过现有的基在不同的角度.
- 量化表面沉积,堆垂直曲,水平移位,轴向力和曲矩.
主要成果:
- 表面沉积随着交叉角度的减少而增加,最多为2.5毫米.
- 垂直交叉 (90度) 的结果是最小的表面沉积量 (2.0毫米).
- 底座堆的水平移位随着交叉角度的减少而显著增加.
结论:
- 交叉角度极大地影响了表面沉积和基响应.
- 较小的交叉角度导致更大的表面沉积和水平堆位移.
- 这些发现对于选择最佳交叉角度至关重要,以尽量减少屏蔽道挖掘期间对基的干扰.
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