冲刷坡宽对局部悬空管道的变形影响
China Sciencepaper（2018）
Abstract
针对黄土地区管道下方土壤在雨水作用下常会发生湿陷或冲沟,造成埋地管道局部悬空,影响管道安全运输的问题.考虑雨水对管道的侵蚀状态,根据弹性地基梁理论,建立悬空管道的力学模型,推导空管道的挠度计算公式.算例分析结果表明,模型计算结果与数值模拟结果相近,模型是合理的;冲刷坡宽对悬空管段变形影响不大,对非悬空管段变形影响较大;冲刷坡宽越长,非悬空管段管道变形越明显,影响范围越大.
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Key words
suspended pipe,scour slope width,deformation model,elastic foundation beam,deflection analysis
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