|Table of Contents|

Structure Deformation and Force Characteristics of Skyrail Bridge Crossing Ground Fissure Zone(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2020年第03期
Page:
416-426
Research Field:
工程地质
Publishing date:

Info

Title:
Structure Deformation and Force Characteristics of Skyrail Bridge Crossing Ground Fissure Zone
Author(s):
GAO Huan1;  HUANG Qiang-bing1; 2*;  JIANG Zi-kan3;  ZHAI Yue1; 2
(1. School of Geological Engineering and Geomatics, Chang’an University, Xi’an 710054, Shaanxi, China; 2. Key Laboratory of Western China’s Mineral Resources and Geological Engineering of Ministry of Education, Chang’an University, Xi’an 710054, Shaanxi, China; 3. Shaanxi Provincial Expressway Construction Group Co., Xi’an 710065, Shaanxi, China)
Keywords:
bridge;  ground fissure;  skyrail;  finite element simulation;  structure deformation;  axial force;  side frictional resistance
PACS:
P642.4; TU93+1
DOI:
10.19814/j.jese.2020.01033
Abstract:
As a typical urban geological disaster in Xi’an, the ground fissure brings great potential harm to the local traffic construction, which attracts the attention of engineering scholars. Taking the skyrail engineering in Xi’an high-tech zone crossing ground fissure zone as the research background, based on the finite element numerical simulation, the structure deformation and force characteristics of the track beam, pier and pile foundation were analyzed. The results show that under the action of ground fissure dislocation, the vertical settlement difference of skyrail track beam is caused, and the vertical displacement difference and horizontal displacement crossing ground fissure section is the largest, and the maximum horizontal displacement is about one quarter of ground fissure dislocation; the vertical settlement of pier is inclined to ground fissure zone, and horizontal displacement in the top of hanging wall is larger than that in footwall, and the maximum horizontal displacement is about one third of ground fissure dislocation; the deformation of bridge pile foundation results in inclined deformation dominated by horizontal displacement; the soil produces positive friction to footwall pile and negative friction to hanging wall pile; footwall pile is under pressure while hanging wall pile is under tension. The above results can provide a reference and guidance for the engineering design, disaster prevention and mitigation of bridge crossing ground fissure zone.

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Last Update: 2020-05-27