The structural response of small diameter (<300 mm) corrugated high-density polyethylene (HDPE) drainage pipes installed on agricultural lands, has not been thoroughly examined. Additionally, characteristics of imposed wheel loads from agricultural field machinery are not adequately represented in conventional structural design practises for buried pipes. This study investigates the response of single-wall corrugated HDPE pipes (100 mm diameter) under loading from 12 agricultural soil textures, two water table positions, and three agri-machinery wheel loads using a finite-element-based numerical model. Effects from two friction conditions (smooth and bonded) at the soil-pipe interface were assessed. Simulations were also done to determine the impact of variable perforation characteristics (shape, size, and configuration) on the stress distribution and deformation of the corrugated pipes. The results show that bonded friction conditions generally induce larger stresses in the pipe wall than smooth friction conditions, but the differences are not statistically significant across all soil and load types. The critical load case occurs for a loaded grain wagon on silt loam soils. The results also indicate that perforations in the pipe wall induce high stress concentrations at the edges of rectangular slots and circular holes, increasing the risk for failure by ductile yielding. Specifically, corrugated HDPE pipes perforated with 5.6 mm diameter holes produce stresses that exceed the yield strength at buried depths shallower than 0.9 m. In conclusion, perforation characteristics should be considered when assessing the structural adequacy of corrugated HDPE pipes for land drainage.

安装在农田上的小直径（<300 毫米）波纹高密度聚乙烯 (HDPE) 排水管的结构响应尚未得到彻底检查。另外，在埋地管道的常规结构设计实践中，不能充分体现来自农业机械施加的车轮载荷的特性。本研究使用基于有限元的数值模型研究了单壁波纹 HDPE 管（直径 100 毫米）在 12 种农业土壤质地、两个地下水位位置和三个农业机械车轮载荷下的响应。评估了土壤-管道界面处两种摩擦条件（光滑和粘合）的影响。还进行了模拟以确定可变穿孔特征（形状、尺寸、和配置）对波纹管的应力分布和变形的影响。结果表明，与光滑摩擦条件相比，粘合摩擦条件通常会在管壁中引起更大的应力，但在所有土壤和载荷类型之间差异在统计上并不显着。临界载荷情况发生在粉砂壤土上的装载谷物货车上。结果还表明，管壁上的穿孔会在矩形槽和圆孔的边缘引起高应力集中，从而增加因延性屈服而失效的风险。具体而言，打有 5.6 mm 直径孔的波纹 HDPE 管在埋深小于 0.9 m 时会产生超过屈服强度的应力。综上所述，