公路隧道抗震设计规范(英文版)[JTG 2232-2019(EN)]

1 General Provisions 1 2 Terms and Symbols 2 2. 1 Terms 2 2. 2 Symbols 3 3 Basic Requirements 5 3. 1 Seismic fortification category and standard 5 3. 2 Earthquake effect 7 3. 3 Seismic design process 8 4 Tunnel Site, Site and Ground 10 4. 1 General requirements 10 4. 2 Tunnel site and site 11 4. 3 Ground 14 4. 4 Soil liquefaction and soft ground 15 5 Earthquake Effect 22 5. 1 General requirements 22 5. 2 Horizontal earthquake effect 23 5. 3 Vertical earthquake effect 24 5. 4 Design ground motion time histories 25 6 Calculation Method 28 6. 1 General requirements 28 6. 2 Calculation requirements 29 7 Materials and Parameters 31 7. 1 General requirements 31 7. 2 Material selection 31 7. 3 Material properties 34 7. 4 Physical and mechanical parameters of materials 35