●Chapter 1 Introduction and Literature Review
1.1 Background and Research Objective
1.2 Literature Review
1.2.1 Responses of Underground Structures Subjected to Blast Loading
1.2.2 Pore Pressure and Soil Liquefaction Induced by Blast
1.2.3 lti-hazard Engineering for Tunnel Lining
1.2.4 Centrifuge Modeling Technique
1.2.5 Numerical Simulation of Explosion
1.2.6 Numerical Simulation of Soil-Tunnel Interaction
1.3 Research Approaches
1.4 Chapter Contents
Chapter 2 Blast Simulation Involving Air-Structure Interaction
2.1 Blast Wave Propagation in Air
2.1.1 Theoretical Background
2.1.2 Blast Wavelength and Finite Element Size
2.2 Simulation of Blast Loading in LS-DYNA
2.2.1 Modeling of Air and Explosives
2.2.2 MM-ALE Approach
2.2.3 LBE+MM-ALE Approach
2.3 Simulation of Free Air Blast
2.3.1 Effects of Initial Air Density
2.3.2 Simulation of Free Air Blast with Different Locations of Ambient Layer
2.3.3 Amount of Explosive and Element Size
2.4 Centrifuge Technique
2.5 Reflected Blast on a Rigid Surface
2.6 Simulation of Blast Effect on a Steel Plate
2.7 Size of Air Domain Inside the Tunnel
2.8 Conclusions and Discussions
Chapter 3 Numerical Modeling of Soil-Tunnel Interaction
3.1 Modeling of Tunnel Lining
3.2 Modeling of Soil Tunnel Interfaces
3.3 Modeling of Unsaturated and Saturated Soils
3.4 Evaluation of FHWA Soil Model
3.4.1 Introduction
3.4.2 Evaluation
3.5 Conclusions
Chapter 4 Response of Circular Tunnels Subjected to Medium Internal Blast Loading
4.1 Base-Case Finite Element Model
4.2 Simulation Results with 200kg TNT
4.2.1 General Response of Tunnel
4.2.2 Response in Soil-Tunnel Interface
4.2.3 Response in Soil
4.2.4 Analysis Results with Simplified Blast Load
4.2.5 Equivalent Triangle Impact Load
4.3 Simulation Results with 100kg TNT
4.3.1 Response of Tunnel
4.3.2 Impact Loading on Tunnel Lining
4.3.3 Response in Soil
4.4 Simulation Results with 50kg TNT
4.4.1 Response of Tunnel
4.4.2 Response of Soil
4.5 Conclusions
……

本專著結合靠前的離心模型數值仿真技術，采用顯式動力分析軟件LSDYNA，考慮土與結構相互作用，流固耦合精細模擬爆炸波在空氣中傳播、反射等現像，研究了地下結構在爆炸波作用下的響應和破壞模式，再現了土在爆炸波作用的弱化和液化現像與機理，並繫統比較了各類加固減災方式的效果。本專著通過對城市地下工程安全問題全面繫統的研究，提升城市地下工程對爆炸等公共安全事件的抵御、吸收、適應、恢復、學習的能力。本書可供城市公共安全與防護方向的研究人員和高等院校師生參考使用。