title: Push Force Analysis of Anchor Block of the Oil and Gas Pipeline in a Single-Slope Tunnel Based on the Energy Balance Method.
abstract: In this paper, a single-slope tunnel pipeline was analysed considering the effects of vertical earth pressure, horizontal soil pressure, inner pressure, thermal expansion force and pipeline-soil friction. The concept of stagnation point for the pipeline was proposed. Considering the deformation compatibility condition of the pipeline elbow, the push force of anchor blocks of a single-slope tunnel pipeline was derived based on an energy method. Then, the theoretical formula for this force is thus generated. Using the analytical equation, the push force of the anchor block of an X80 large-diameter pipeline from the West-East Gas Transmission Project was determined. Meanwhile, to verify the results of the analytical method, and the finite element method, four categories of finite element codes were introduced to calculate the push force, including CAESARII, ANSYS, AutoPIPE and ALGOR. The results show that the analytical results agree well with the numerical results, and the maximum relative error is only 4.1%. Therefore, the results obtained with the analytical method can satisfy engineering requirements.
authors.affiliation: College of Mechanical and Electronic Engineering, China University of Petroleum, Qingdao 266580, China.
authors.forename: Yifei
authors.initials: Y
authors.lastname: Yan
authors.affiliation: College of Pipeline and Civil Engineering, China University of Petroleum, Qingdao 266580, China.
authors.forename: Lisong
authors.initials: L
authors.lastname: Zhang
authors.affiliation: College of Pipeline and Civil Engineering, China University of Petroleum, Qingdao 266580, China.
authors.forename: Xiangzhen
authors.initials: X
authors.lastname: Yan
mesh_terms: D002681:China; D008962:Models, Theoretical; D059206:Natural Gas; D010578:Petroleum; D011312:Pressure; D014186:Transportation
chemical_list: D059206:Natural Gas; D010578:Petroleum