نوع مقاله : مقاله پژوهشی (کاربردی)
نویسندگان
1 1-گروه مهندسی سازه و زلزله، دانشکده مهندسی عمران آب و محیط زیست، دانشگاه شهید بهشتی، تهران، ایران 2-گروه مهندسی عمران، دانشگاه فنی
2 1-گروه مهندسی سازه و زلزله، دانشکده مهندسی عمران آب و محیط زیست، دانشگاه شهید بهشتی، تهران، ایران
چکیده
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
One of the most challenging of the gas pipeline transition industry is preserving the pipeline due to the hazard of ground motions such as fault movements. Wave connection can create a rotational deflection by its deformation capacity to limit failure area of pipeline. In this paper, the application of wave connection in cross-gas transmission pipes with faults is developed. Wave bonding with high ductility capacity shows the behavior of the plastic joint, with the difference that without a significant increase in plastic strain, it will be able to provide axial, shear and rotational displacements. One of the influential parameters in the response of buried pipes is the length of the modeled pipe and soil. This length depending on relative soil-pipe stiffness. In this paper, the length of the optimized model was considered to be more than 3 times the length of the model recommended in previous studies. The results show that this change in length will change the tube response by about 20%. Also, four node shell elements and eight node solid elements intended for pipes and soil, respectively. One of the most important damage to the pipe is local buckling. The results show that the use of wave connection will result in the complete elimination of this damage and also an 80% reduction in strain values.
کلیدواژه‌ها [English]
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