在埋地状态下硬聚氯乙烯(UPVC)管变形及土体反作用模数实验研究

Study on the Deformation and the Earth Reaction Modulus of Underground UPVC pipes

UPVC给水管道的承载能力取决于管材的径向变形程度,这种变形又受到周围被动土压力的限制,而与土体种类、密实性等因素有关.本实验研究了埋地状态下UPVC管道空管时的变形情况及其反映多因素参数—土体反作用模数E",得到了合理的设计取值.

The load—bearing capacity of UPVC water pipes depends on the extent of the radial deformation of the pipes. The deformation is restricted by the pressure of surrounding passive forces and relates to the soil density and some other factors of the earth. In this experiment we studied the deformation of empty underground UPVC pipes and the reflective multifactor coefficient—the earth reaction modulus E', and obtained the reasonable value for design.