Numerical analysis of harmful effects on highway tunnel and bridge crossing the mined-out regions and its application
The three-dimensional computation model was built by using MIDAS/GTS finite element program and FLAC3D technique based on the Kangjiagou bridge-Miaoliang tunnel project which is crossing the mined-out regions in Liulin section of QingdaoYinchuan highway. The deformation responses of the ground surface, the tunnel lining and bridge structure, and as well as their structural forces are analyzed as the following sequence of operations: the mining process step-by-step was performed corresponding to the years, and then the grouting treatment technology was carried out after mining coal in Kangjiagou, next, Miaoliang tunnel was excavated and Kangjiagou bridge was constructed. The surface deformations under different working conditions were revealed, and the ground subsidence basin characteristics were analyzed. Also, the deformations and forces of key bearing parts of the tunnel lining and bridge structure were predicted in order to guide the engineering design and construction. The above-mentioned results have important theoretical meaning for guiding the practice of goaf grouting and supporting of tunnels and bridges to meet the requirements of strength, stiffness and stability of tunnels and bridge structures.
H.G.Zhang S.R.Wang N.Q.Shen
School of Civil Engineering and Mechanics,Yanshan University,Qinhuangdao,China School of Engineering and Technology,China University of Geosciences,Beijing,China
国际会议
International Symposium and The 7th Asian Regional Conference of IAEG(国际工程地质与环境协会年会暨第七届亚洲工程地质会议)
成都
英文
552-558
2009-09-09（万方平台首次上网日期，不代表论文的发表时间）