Seismic pipe joint

A system, comprising:

• a first pipe comprising a main body having a first diameter and a pipe spigot end portion, the first pipe comprising a first pipe wall thickness, the first pipe comprising a metallic material, and the pipe spigot end portion of the first pipe comprising a single layer of metallic material;
• and
• a second pipe comprising a main body having the first diameter and a pipe bell end portion having a second diameter that is greater than the first diameter, the pipe bell end portion being configured to receive the pipe spigot end portion of the first pipe, the second pipe comprising a metallic material and the pipe bell end portion of the second pipe comprising a single layer of metallic material;
• wherein the first pipe comprises an outwardly-extending, buckle-inducing deformation that is formed in the pipe spigot end portion and spaced apart from an end of the pipe spigot end portion of the first pipe such that when the first pipe is welded to the second pipe, the buckle-inducing deformation is offset from the weld between the first pipe and the second pipe and offset from the pipe bell end portion of the second pipe;
• and
• wherein a crest height of the buckle-inducing deformation is 50% to 500% of the first pipe wall thickness;
• wherein a contour of the buckle-inducing deformation is curved from a crest of the buckle-inducing deformation to a portion of the main body of the first pipe having the first diameter;
• wherein the pipe bell end portion of the second pipe transitions from the second diameter to the first diameter and is free of a buckle-inducing deformation, and the first diameter continues along the main body of the second pipe away from the pipe bell end portion of the second pipe;
• and
• wherein the buckle-inducing deformation is spaced from the end of the pipe spigot end portion of the first pipe by 2 inches to 10 inches along the first pipe.

A pipe joint, comprising:

• a first pipe comprising a main body having a first diameter, a first pipe wall thickness, and an end portion configured as a pipe spigot end portion, the first pipe comprising a metallic material and the end portion of the first pipe comprising a single layer of metallic material;
• a second pipe comprising a main body having the first diameter and an end portion configured as a pipe bell end portion, the pipe bell end portion having a second diameter that is greater than the first diameter, the second pipe comprising a metallic material and the pipe bell end portion of the second pipe comprising a single layer of metallic material;
• the pipe spigot end portion being inserted into the pipe bell end portion and welded to the pipe bell end portion to seal the joint between the pipe spigot end portion and the pipe bell end portion;
• the first pipe comprising an outwardly-extending, buckle-inducing deformation that is spaced apart from the pipe bell end portion of the second pipe;
• and
• wherein a crest height of the buckle-inducing deformation is 50% to 500% of the first pipe wall thickness;
• wherein a contour of the buckle-inducing deformation is curved from a crest of the buckle-inducing deformation to a portion of the main body of the first pipe having the first diameter;
• wherein the pipe bell end portion of the second pipe transitions from the second diameter to the first diameter and is free of a buckle-inducing deformation, and the first diameter continues along the main body of the second pipe away from the pipe bell end portion of the second pipe;
• the pipe joint further comprising an external fillet weld joining the pipe bell end portion of the second pipe to an exterior surface of the first pipe;
• the pipe joint further comprises an internal fillet weld joining the pipe spigot end portion of the first pipe to an interior surface of the pipe bell end portion of the second pipe having the second diameter;
• and
• wherein the buckle-inducing deformation is axially spaced apart from the second pipe by 2 inches to 10 inches along the first pipe.