AASHTO MP 40-19（2021）涵盖了表面和地下排水应用中使用的钢骨增强聚乙烯（PE）螺纹管、联轴器和配件的要求和试验方法。注1:本规范是M 335的延伸，但涵盖了更大的管道直径。标称尺寸为1650至3000毫米（66至120英寸）包括在内。规定了材料、工艺、尺寸、穿孔、管道刚度、抗冲击性、接缝抗拉强度、形状稳定性、连接系统和标记形式。钢骨增强聚乙烯带肋管用于地表和地下排水应用，土壤为其柔性壁提供支撑。 其主要用途是通过开放式重力流收集或输送排水，如涵洞、雨水沟等。注2:当在末端可能暴露的位置使用钢筋增强聚乙烯带肋管时，由于PE的可燃性，以及长期暴露在紫外线辐射下以及钢筋腐蚀的影响，应考虑对暴露部分的保护。本规范仅涉及该管道的材料要求。AASHTO LRFD桥梁设计规范第12节和AASHTO LRFD桥梁施工规范第26节分别给出了钢骨增强热塑性涵洞的结构设计和正确的安装程序。 根据用户或工程师的要求，制造商应提供全面工程评估所需的剖面墙截面详图。

This specification covers the requirements and methods of tests for steel-reinforced polyethylene (PE) ribbed pipe, couplings, and fittings for use in surface and subsurface drainage applications.Note—This specification is an extension of AASHTO M 335, but covering larger pipe diameters.Nominal sizes of 1650 to 3000 mm (66 to 120 in.) are included.Materials, workmanship, dimensions, perforation, pipe stiffness, impact resistance, tensile strength of seams, shape stability, joining systems, and form of markings are specified.Steel-reinforced PE ribbed pipe is intended for surface and subsurface drainage applications where soil provides support to its flexible walls. Its major use is to collect or convey drainage water by open gravity flow as culverts, storm drains, etc.Note—When steel reinforced PE ribbed pipe is to be used in locations where the ends may be exposed, consideration should be given to protection of the exposed portions due to combustibility of the PE and the effects of prolonged exposure to ultraviolet radiation as well as corrosion of the steel reinforcement.This specification only deals with this pipe’s materials requirements. The structural design of steel reinforced thermoplastic culverts and the proper installation procedures are given in theAASHTO LRFD Bridge Design Specifications, Section 12, andAASHTO LRFD Bridge Construction Specifications, Section 26, respectively. Upon request of the user or engineer, the manufacturer shall provide profile wall section detail required for a full engineering evaluation.