Research on Surface Overpressure and Deformation of Underground Frame Beam under Internal Blast Loads
The finite element model of a separately built one-storey underground frame was set up with software ANSYS/LS-DYNA and numerical simulation was done to study on surface overpressure and deformation of the underground frame beam under internal blast loads.It is found that the overpressure peak values on the beam end and middle surface are both much higher when the explosive is below the middle of beam and the peak on the middle surface goes up with the increment of explosive height while that on the beam end surface is not sensitive to the height.The numerical result also indicates that the soil around the frame nearly has no effect on surface overpressure of the frame beam.However,whether there is soil or not the beam deformation has much difference and the increment of the deformation is closely all the same for different soil thicknesses but under the circumstance of thicker soil the beam obtains less deformation upward in a short time after explosion.
Surface overpressure Deformation Internal blast loads Underground frame Beam Height of explosive Soil around
Li Tian Qiaoying Jiang
School of Civil Engineering,Tianjin University,Tianjin 300072,China;Key Laboratory of Coast Civil St School of Civil Engineering,Tianjin University,Tianjin 300072,China
国际会议
西安
英文
412-416
2013-07-27（万方平台首次上网日期，不代表论文的发表时间）