Study on Sewage Pipe Connection Structure with Elasticity

摘要

Conventional structures of sewage pipe joints vary depending on the end shape of sewerrnpipes. The shapes are roughly classified into two types: one with a bell on one end and arnspigot on the other and the other with straight ends. Bell and spigot joints are made byrninserting the spigot fitted with a rubber O-ring gasket in the bell of another pipe. In therncase of jointing plain pipes, a coupler is generally fitted to the joint after fitting a rubberrnO-ring gasket to the ends of the pipes. However, the flexibility of these joints depends onrnthe degree of slip-out of such joints, causing uncertainty about repeated stress and stressrnduring an earthquake. This paper reports on socketless flexible joints of sewage pipesrndirectly wrapped with non-PVC film to resist cyclic live loading and loading during anrnearthquake.