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首页> 外文期刊>Journal of Performance of Constructed Facilities >Beam-on-Springs Modeling of Jointed Pipe Culverts
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Beam-on-Springs Modeling of Jointed Pipe Culverts

机译：联合管涵的弹簧梁建模

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摘要

In this paper, an existing beam-on-springs modeling methodology is examined for suitability in estimating vertical displacements and joint movement in jointed pipe culvert systems. Methods of determining the modulus of subgrade reaction, ks, are used in beam-on-springs modeling and compared with results from laboratory tests on three buried culvert pipes. Pipes were buried in soil conforming to AASHTO specifications for buried structures and then loaded at the ground surface. Two of the methods provided reasonable estimates of ks for use with both rigid and flexible test pipes (with an average error of 25%). The first method relies on empirical parameters, whereas the second method relies on actual soil properties to estimate ks. This makes the second model more appealing. However, the second model is somewhat less accurate than the first (10% average error compared with 25% average error). Movement at the culvert joint was estimated by beam-on-springs modeling with a moderate degree of accuracy (within 52% error when calculating the maximum movements) because of the complexities of the jointed culvert system being modeled. Accordingly, results from a beam-on-springs model should be used conservatively.
机译：在本文中，对现有的弹簧梁建模方法进行了研究，以评估联合管涵系统中的垂直位移和联合运动。确定地基反应模量ks的方法用于弹簧梁模型，并与三个地下涵管的实验室测试结果进行比较。将管道埋入符合AASHTO埋入结构规范的土壤中，然后将其加载到地面。两种方法均提供了适用于刚性和挠性测试管的ks的合理估计（平均误差为25％）。第一种方法依赖于经验参数，而第二种方法则依赖于实际的土壤特性来估计ks。这使得第二种模型更具吸引力。但是，第二个模型的准确性比第一个模型差一些（平均误差为10％，而平均误差为25％）。涵洞关节处的运动是通过梁上弹簧建模来估计的，该模型具有中等程度的准确性（计算最大涵洞时误差在52％以内），因为要模拟的涵洞系统很复杂。因此，应保守地使用弹簧梁模型的结果。

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