堤防加固的排位堆对邻近建筑物的影响
Majd Ahmad1, Ronald B J Brinkgreve2, Sebastiaan N Jonkman1
1Faculty of Civil Engineering and Geosciences, Department of Hydraulic Engineering, Delft University of Technology, Delft, The Netherlands.
概括
移位堆可以在柔软的土壤上加强河堤,但安装会导致地面运动. 最佳的位置是在内侧的斜坡上,但靠近建筑物需要较小的堆或不同的方法,因为移位风险.
科学领域:
- 地质技术工程 地质技术工程
- 土木工程 土木工程是指土木工程.
- 环境工程 环境工程
背景情况:
- 在软土壤上的河堤需要强化以保持稳定.
- 移位堆是改善堤的潜在解决方案.
- 了解安装对邻近结构的影响至关重要.
研究的目的:
- 为了数值地调查河堤强化排位堆的地质技术性能.
- 评估宏观稳定性和堆安装对附近建筑物的影响.
- 确定软土堤的最佳堆放置和设计考虑因素.
主要方法:
- 使用硬化土壤,软土壤爬行和NGI-ADP-SHANSEP模型开发了一个有限元素模型.
- 通过横向体积应变模拟的堆安装,堆直径,间距和位置各不相同.
- 一座建在深层堆基础上的两层建筑,建模以评估安装引起的迁移.
主要成果:
- 在内斜坡上放置堆可以平衡安全性,堆长度和变形.
- 在安装过程中,在堤脚附近发生了显著的水平移位.
- 排位堆不适合在没有修改的建筑物10-15米以内.
结论:
- 移位堆提供了强化优势,但由于安装引起的地面运动,对邻近的结构构成风险.
- 特定地点的评估和仔细的设计校准对于安全实施至关重要.
- 在现有建筑物附近,可能需要采用替代安装方法或更小的直径.
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