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首页> 外文会议>Pipeline Division Specialty Conference; 20050821-24; Houston,TX(US) >Sewer Pipe-joint Infiltration Test Protocol Developed by CIGMAT
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Sewer Pipe-joint Infiltration Test Protocol Developed by CIGMAT

机译：CIGMAT开发的下水道接头渗入测试协议

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While a number of small to large older cities are undertaking repairs and maintenance, several other newer cities are planning for installing wastewater systems. Infiltration due to leaking pipes, manholes, laterals and other components of a wastewater system will add to the problem of overflow and over load the treatment facilities. Frequent overflows not only lead to regulatory problems but also increase the treatment cost. Leaking systems will result in the erosion of soils through the leaking joints leading to the settlement of the ground surface, formation of sinkholes and damage to surrounding pavements and structures. Literature review indicated that Standard ASTM pipe-joint tests varied with the type and size of pipes. In order to quantify the infiltration at various types of pipe-joints, a unified testing program was developed to test 30-in. diameter (76.2 mm) sewer pipe-joints up to a hydrostatic pressure of 50 kPa (7 psi). A testing protocol was developed and approved by a steering committee with representation from the USEPA, pipe associations, cities and consulting engineers. The testing protocol outlined the procedures to determine the leakage rates at pipe -joints under shear loading and angular deflection. A testing facility was designed and constructed in the CIGMAT Laboratory at the University of Houston. Pipe joints were tested in duplicate. Concrete pipe joint, PVC pipe joint, fiberglass pipe joint and clay pipe joint were tested. Relationships between shear strength at the pipe joint, deflection of the pipe and the angle of rotation of the pipes at the joint have been developed.
机译：尽管许多大小城市都在进行维修和保养，但其他几个较新的城市正在计划安装废水处理系统。由于废水系统的管道，人孔，支管和其他组件泄漏而导致的渗透将增加处理设备的溢流和过载问题。频繁的溢流不仅导致监管问题，而且增加了处理成本。渗漏系统将通过渗漏的缝隙导致土壤侵蚀，从而导致地面沉降，形成下陷和破坏周围的人行道和建筑物。文献综述表明，标准ASTM管接头测试随管的类型和尺寸而变化。为了量化在各种类型的管接头处的渗透，开发了一个统一的测试程序来测试30英寸。直径（76.2毫米）的下水道管接头的静水压力最高为50 kPa（7 psi）。测试规程由指导委员会制定并获得批准，指导委员会由USEPA，管道协会，城市和咨询工程师代表。测试规程概述了确定剪切载荷和角挠度下管接头泄漏率的程序。在休斯敦大学的CIGMAT实验室中设计并建造了一个测试设施。重复测试管道接头。测试了混凝土管接头，PVC管接头，玻璃纤维管接头和粘土管接头。已经开发出管接头处的剪切强度，管的挠度和管接头处的旋转角度之间的关系。

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