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METHOD OF ESTIMATING BEHAVIOR OF PIPELINE BURIED ACROSS FAULT LINE, AND DEVICE FOR ESTIMATING BEHAVIOR OF PIPELINE BURIED ACROSS FAULT LINE
METHOD OF ESTIMATING BEHAVIOR OF PIPELINE BURIED ACROSS FAULT LINE, AND DEVICE FOR ESTIMATING BEHAVIOR OF PIPELINE BURIED ACROSS FAULT LINE
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机译：沿管线穿越断层线的行为评估方法及装置
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摘要
This method of estimating the behavior of a pipeline buried across a fault line includes: a first step of obtaining the number N of earthquake-resistant joints required to absorb an amount H of fault displacement in a direction perpendicular to the pipe axis, for an allowed bending angle θa and an effective pipe length L, and of obtaining a bending zone L0 in the direction of the pipe axis; a second step of obtaining a load P(y) borne by the pipe in respect of a relative displacement y between the pipe and the ground, on the basis of a spring model of the ground in the direction perpendicular to the pipe axis, defined using spring constants k1y, k2y, with a relative displacement δgy as a boundary; a third step of obtaining a bending moment distribution at each joint position, from the bending moment of a trapezoidal distributed load, and of obtaining a bending angle θ of each joint in accordance with a predetermined joint rotation spring model; and a bending performance evaluation step of evaluating whether the bending angle θ falls within the allowed bending angle θa.
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机译：估计埋在断层线上的管道的行为的这种方法包括：第一步，在允许的范围内，获得吸收垂直于管轴方向的断层位移量H所需的抗震缝的数量N。弯曲角θ a 和有效管长L，并得到沿管轴方向的弯曲区域L 0 。第二步，根据地面在垂直于管道轴线的方向上的地面弹簧模型，获得关于管道与地面之间的相对位移y的管道承受的载荷P（y），弹簧常数k 1y ，k 2y ，相对位移δ gy 为边界;第三步骤，从梯形分布载荷的弯矩获得每个关节位置的弯矩分布，并根据预定的关节旋转弹簧模型获得每个关节的弯曲角θ;弯曲性能评价步骤，用于评价弯曲角度θ是否在允许的弯曲角度θ a 内。
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