Finite Element Analysis on the Directly Buried Heating Bent Pipeline with Many Break Angles

Abstract:

In order to get the optimal design scheme of a directly buried heating bent pipeline with many fold angles in a certain practical engineering, this paper simulated the pipeline by the ANSYS finite element analysis software.Through applying different boundary conditions to the model, the stress was analyzed, the destroy forms of the pipeline and the positions of stress danger points were determined,and the fatigue life was checked according to BS EN. Compared with the current design method,adopting numerical simulation analysis method has greatly reduced the number of the usage of compensators and fixed piers, broke through the restrictions for larger fold angle in the standard,and at the same time, it has reduced the construction difficulties and the engineering investment,improved the reliability of the network,this paper has guiding significance to the engineering practice.

• Periodical: Advanced Materials Research (Volume 842)
• Pages: 415-419
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.842.415
• Online since: November 2013
• Authors: Bao Xian Qian*, Fei Wang, Guo Wei Wang
• Keywords: Bent Pipeline with many Fold Angles, Design Scheme, Directly Buried Heating, Fatigue Life, Numerical Simulation

References

[1] CJJ/T81-98, Technical specification for directly buried heating pipeline engineering in city Standard. Beijing: China building industry press，1998. 11.

[2] Fei Wang, Jianwei Zhang. The directly buried heating pipeline engineering design. China building industry press，2007. p.79~81.

[3] Gang Wang. The directly buried heating piping system design method. Harbin: Harbin institute of technology, (1999).

[4] Na Li. The directly buried heating pipe laying stress calculation and analysis. Harbin: Harbin institute of technology，(2007).

[5] (Denmark) rand's treaty (Ed. ), He Ping, Wang Gang, (eds). The district heating handbook. Harbin: Harbin industrial university press, 1998, pp.55-66.

[6] Fei Wang, Jianwei Zhang. An Experimental Study on the Friction Factor of Large Diameter Precast Buried Heating Pipes. Building heat ventilation and air conditioning，2006，25(6）: 74~75.

[7] Guowei Wang. Large-Diameter Directly Buried Heating Pipe 90° Elbow Fatigue Life of the Finite Element Analysis：［D］. Taiyuan, Taiyuan university of technology, (2010).

[8] Design and Installation of Preinsulated Bonded Pipe System for District Heating. BS EN13941: 2003. 105~107.