Figures of the Article
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Illustration of vertical force and subgrade reaction force acting on a pipeline
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Flow chart for calculation of pipeline responses considering gap formation and soil yielding
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Observed and calculated ground settlements and pipe deflections (80g)
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Observed and calculated moments of pipeline (80g)
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Observed and calculated subgrade reaction forces acting on pipe bottom (80g)
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Observed and calculated ground settlements and pipe deflections (60g)
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Observed and calculated moments of pipeline (60g)
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Variations of maximum bending moment of pipeline and width of gap and yielding with EpIp
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Variations of maximum strain of pipeline and width of gap and yielding with Vl
Tables of the Article
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分类 管线 隧道 土体 L/m Dp/m tp/m Ep/GPa zp/m R/m z0/m Es/MPa vs φ/(°) K0 $ \gamma $/(kN∙m-3) 工况A 91.2 1.422 0.0191 210 5.384 3 14.384 39.49 0.3 32 0.43 15.631 工况B 91.2 1.422 0.0191 210 5.168 3 14.168 38.47 0.3 32 0.43 15.582 工况C 91.2 1.626 0.0286 210 5.168 3 14.168 38.47 0.3 32 0.43 15.582 注:tp为管线壁厚;K0为静止侧向土压力系数;φ为土体内摩擦角。 -
K Vl/% k/
(kN∙m-3)Nv Nq Nr 工况A 工况B
和C工况A 工况B
和C0.6936 0.4392 7.27 9.67 6230 2.02 33 39 注:①K和Vl取值由各工况实测管线轴线位置自由场沉降经式(5a)拟合所得;②k取值为程霖[2]试验测得;③Nv,Nq和Nr取值系根据zp/Dp和φ值参指南[8]查图确定。 -
管线 隧道 土体 L/m Dp/m tp/m Ep/GPa Ip/(105 m4) zp/m R/m z0/m φ/(°) K0 $ \gamma $/(kN∙m-3) 48 1.08 0.06 70 17563 1.74 3 6 31 0.49 14.602 -
K k (kN∙m-3) qu (kN∙m-1) qd (kN∙m-1) 工况1 工况2 工况3 工况4 0.5619 0.4719 0.4541 0.4479 17287 36.4 2290 Vl/% 工况1 工况2 工况3 工况4 1.10 1.91 2.71 3.41 注:①K和Vl取值由各工况实测管线轴线位置自由场沉降经式(5a)拟合所得;②K,qu和qd取值由文献[9]计算给出。