This paper discusses the effects of local deformation, dent, and strain hardening properties on strain capacity in compression of a line pipe. Compression tests were conducted using dented pipes with an outside diameter of 400mm. A series of finite element analyses were conducted to investigate the compression behaviors. The compression capacity of a pipe was defined as the longitudinal critical remote strain whose strain distribution was free from the effects of a dent. Seismic integrity of the pipelines with a locally deformed pipe is discussed in accordance with the seismic design guideline issued by Japan Gas Association.
