doi:10.16186/j.cnki.1673-9787.2020.4.20

Received:2019/12/02

Revised:2020/02/09

Published:2020/07/15

Influence of ANSYS-based simplified top beam cross-section form of the steel trestle pile on its mechanical properties

XIE Xiaopeng1, WANG Juan2, DOU Guotao1, LI Han1, GAO Bo3

1.School of Civil Engineering，Zhengzhou University of Aeronautics，Zhengzhou  450046，Henan， China;2.School of Water Conservancy and Environment ，Zhengzhou University，Zhengzhou  450001，Henan，China;3.Jiangsu Province Transportation Engineering Group Co. ，Ltd. ， Zhejiang  212100，Jiangsu，China

Abstract:In order to investigate the influence of the ANSYS-based simplified top beam cross-section form of the steel trestle pile on its mechanical properties，an original model and a simplified model in the ANSYS software were built with the top beam of the construction trestle pile at the Yellow River Bridge as the research object. Firstly，differences in stresses acted on these two models under the static force were elaborated，then，the comparison of dynamic responses of the construction trestle under the wind load were analyzed. The results showed that：（1） Under the self-weight of the upper structure （static action）， two models slightly differ from each other in the maximum vertical displacement（only 0. 56%） and the Mises stress（only 0. 68%） ；（2） Under the wind load （dynamic action）， there was a difference of 0. 023% in absolute values of the maximum velocity of the middle part of the pile top beam among two models， and there was also a difference of 0. 02% in absolute values of the maximum acceleration. Therefore，it was feasible to use the simplified cross section to represent the actual cross section in the research on the stress analysis of the steel trestle under the self-weight of the upper structure or the wind load.

Key words:top beam of the steel trestle pile;finite element simulation;simplification of beam section;wind

钢栈桥桩顶梁截面ANSYS简化对其力学性能的影响_谢晓鹏.pdf