@article{Guo2018, 
author = {Rui Guo and Hong Jiang},
title = {Force and Deformation of a Shallow Soil-Buried Super-Long Box Culvert during Jacking Construction on a Highway},
year = {2018},
journal = {Journal of Highway and Transportation Research and Development (English Edition)},
volume = {12},
number = {2},
pages = {38-42},
keywords = {road engineering, mechanical characteristics, numerical simulation, shallow soil-covered and super-long box culvert},
url = {https://www.sciopen.com/article/10.1061/JHTRCQ.0000623},
doi = {10.1061/JHTRCQ.0000623},
abstract = {An example of a project on an oversized box culvert jacked into highway subgrade in Guangdong area was investigated to determine the mechanical behavior of shallow soil-covered super-long box culvert in the jacking construction process. On the basis of 3D finite element simulation, the law for stress-strain change and the effective construction area of the box were studied by considering different lengths and thicknesses and drag reduction versus non-drag reduction of overburden soil. Result shows that under the same working condition, the stress-strain of the roof and bottom plate exhibits an "armchair" change shape with an increase in jacking length, whereas the side wall presents a "trapezoid" shape in the box culvert jacking process. The thickness and characteristics of the covered soil (on top of the box culvert) exert considerable influences on the stress-strain of the box culvert structure. If the covered soil is thick and dense, then the stress-strain of the structure will be high. The pavement (on top of the box culvert) settlement ranges from 7.0-17.1 mm due to the effect of vibrations produced during box culvert jacking construction, and the scope of the disturbed roadbed and road surface is 23-30 m along the jacking direction. The drag reduction effect of the paraffin oil mixture is more effective than that of slurry drag reduction. The research results will play a significant guiding role in the design and construction of similar projects.}
}