STUDY ON THE LONGITUDINAL MECHANICAL MODEL OF BURIED CULVERT DURING FOUNDATION DIFFERENTIAL SETTLEMENT
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摘要: 地基不均匀沉降是影响埋地管涵纵向力学性状的主要因素之一。针对Winkler地基模型的缺陷,采用Pasternak双参数地基模型建立了较为合理的考虑地基差异沉降的埋地管涵纵向力学模型,得到了沉陷区埋地管涵的挠曲线表达式,进而对埋地管涵的纵向力学性状要素进行分析,表明管涵结构的挠度、转角、弯矩、剪力均在差异沉降处有突变,且各要素受不均匀沉降的影响范围有限。
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关键词:
- 地基 /
- Pasternak模型 /
- 管涵 /
- 不均匀沉降 /
- 纵向力学性状
Abstract: Foundation differential settlement is the main factor affecting longitudinal mechanical properties of the buried culvert.The more reasonable longitudinal mechanical model of underground culvert was established based on Pasternak foundation model considering the defect of Winkler foundation model.The deflection curve of culvert was derived and longitudinal mechanical properties were analyzed.The research shows that the deflection,rotation,bending moment and shear force of the culvert are mutated in the differential settlement region and the impact of differential settlement is limited.-
Key words:
- foundation /
- Pasternak model /
- culvert /
- differential settlement /
- longitudinal mechanical property
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[2] 王旭,刘一通,刘晓曦.地基不均匀沉降对特长涵洞结构的影响[J].路基工程,2008 (5): 3-4. 吴小刚.交通荷载作用下软土地基中管道的受力分析模型研究[D].杭州:浙江大学,2004. [3] Rajani B,Zhan C.Kuraoka S.Pipe-Soil Interaction Analysis forJointed Water Mains[J].Canadian Geotechnical Jonural,1996,33(3): 393-404. [4] 张土乔,李洵,吴小刚.地基差异沉降时管道的纵向力学性状分析[J].中国农村水利水电,2003 (7): 46-48. [5] Selvadurai A.土与基础相互作用的弹性分析[M].北京: 中国铁道出版社,1984. [6] 黄义,何芳社.弹性地基上的梁、板、壳[M].北京:科学出版社,2005. [7] Tanahashi H.Formulas for an Infinitely Long Bernoulli-EulerBeam on the Pasternak Model [J].Journal of the JapaneseGeotechnical Society,2004,44(5):109-118.
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