| 土堤式挡风墙加高挡板稳定性分析及研究 |
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| 引用本文： | 朱文智,程建军,张云鹏,景文宏,蒋富强.土堤式挡风墙加高挡板稳定性分析及研究[J].铁道标准设计通讯,2015(1):16-20. |
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| 作者姓名： | 朱文智 程建军 张云鹏 景文宏 蒋富强 |
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| 作者单位： | 1. 石河子大学水利建筑工程学院,新疆石河子,832003
2. 中铁西北科学研究院有限公司,兰州,730000 |
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| 基金项目： | 国家自然科学基金，国家青年科学基金 |
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| 摘 要： | 在强风以及沙粒共同冲击作用的条件下,为了确定既有土堤式挡风墙加高挡板在各风速下的固定形式,寻找其在风沙两相流情况下的一种安全埋深计算方法。应用数值模拟软件对不同风速下加高挡板周围流场进行分析,探讨流场规律。分别计算风荷载与沙荷载作用下加高挡板的受力,并计算其支座反力,最终确定其在极限条件下埋置深度的近似计算方法,为铁路安全运行与防风沙设计提供参考与依据。
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| 关 键 词： | 挡风墙 沙荷载 风荷载 数值模拟 埋深计算 |
Analysis and Research on the Stability of Earth Embankment Wind-break Wall with High Dam Board |
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| ZHU Wen-zhi,CHENG Jian-jun,ZHANG Yun-peng,JING Wen-hong,JIANG Fu-qiang.Analysis and Research on the Stability of Earth Embankment Wind-break Wall with High Dam Board[J].Railway Standard Design,2015(1):16-20. |
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| Authors: | ZHU Wen-zhi CHENG Jian-jun ZHANG Yun-peng JING Wen-hong JIANG Fu-qiang |
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| Institution: | ZHU Wen-zhi;CHENG Jian-jun;ZHANG Yun-peng;JING Wen-hong;JIANG Fu-qiang;College of Water Resources and Architectural Engineering,Shihezi University;Northwest Research Institute Co. ,Ltd.,of CREC; |
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| Abstract: | This paper intends to determine the fixed form of dam-board installed on earth embankment wind-break wall and to find the computational method for safe burial depth in wind-blown-sand with two phase flow in the case of the combined action of strong wind and sand. Numerical simulation software is employed to analyze the characteristics and rules of flow field around the dam-board through at different wind speeds. The stresses of heightened dam-board under the loads of wind and sand are calculatedseparately,and the support reaction is also computed. Finally,the approximate calculation method of burial depth of heighten dam-board in extreme condition is determined to provide some references and basis for safe operation and the design of sandy air prevention of railways. |
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| Keywords: | Wind-break wall Sand load Wind load Numerical simulation Buried depth calculation |
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