#TITLE_ALTERNATIVE#

• Main Author: Harahap (NIM 121 02 033), Depita
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/7583
• Institution: Institut Teknologi Bandung

Abstract: <br /> <br /> <br /> <br /> <br /> Pipeline operating in onshore is usually buried underground in order not to disturbed by onshore activity so that operate for pipe can go well. But for inspection sometimes the soil above the pipeline have to be excavated till can cause the high change in temperature of the pipe steel after installation by sun heat. In this case of buried pipeline become unstable phenomenon called upheaval buckling at a pipeline deflection zone 20 m in length and 50 cm above ground (the middle part). To know cause of buckling in this case hence calculation of parameters influencing buckling the critical buckling load, the critical stress, the axial force in the pipeline, and the friction force at the pipe/soil interface. <br /> <br /> <br /> <br /> <br /> <br /> To know the critical buckling force hence pipe modeled as a column loaded in axial compression and considered to be the column pinned at each end point. Through this modeling is obtained stress and critical load of buckling with slenderness ratio according to theory of Euler. Besides is calculation of stress, axial force acting on the pipeline, and the frictional force resistance of buckling. <br /> <br /> <br /> <br /> <br /> <br /> With the slenderness ratio (L) 289 the pipeline will buckle vertically at critical load 118.66 kN stress 24 MPa. Notice that this stress which will produce buckling is much less than the yield stress 241 MPa. To accommodate pipeline deflection 50 cm above ground 50 cm can be suggested attached by looping system 11.4 m in length. <br />