The stainless steel lining method for rehabilitating water supply pipelines currently lacks dedicated technical specifications and comprehensive design theories,especially in terms of wall thickness design of stainless steel liner.The failure modes of stainless steel liner were ana-lyzed,and formulas for calculating the wall thickness of liner under different failure modes were proposed.The relative size of the required wall thickness of stainless steel liner under different fail-ure criteria was compared through a case study.The results indicate that the wall thickness of the lining pipe designed in Technical specification for trenchless rehabilitation and renewal of urban sewer pipelines(CJJ/T 244)is relatively conservative,and it is advisable to design the liner thick-ness of stainless steel according to the jointly constrain conditions of the capacity of liner to endure internal pressure,negative pressure,and crossing local holes.
关键词
供水管道/不锈钢内衬法/内衬管厚度/非开挖
Key words
Water supply pipeline/Stainless steel lining/Liner thickness/Trenchless
维普
万方数据