Detail of JTS 146-2012

Introduction of JTS 146-2012

1 General Provisions 1.0.1 This code is formulated with a view to unifying technical requirements for seismic design of water transport engineering, implementing the prevention first policy and avoiding or relieving damage to water transport engineering building by earthquake and reducing economic loss. 1.0.2 This code is applicable to the seismic design of port maritime structures and navigation lock maritime structures with seismic precautionary intensity of degree 6, degree 7, degree 8 or degree 9, and may serve as reference for maritime structures such as ship lift and shipyard. 1.0.3 In case of seismic precautionary intensity of degree 6, seismic calculation may not be carried out, but proper seismic constructional measures shall be taken for buildings according to this code. For water transport engineering buildings with seismic precautionary intensity higher than degree 9, special demonstration shall be carried out for its seismic design. Generally, seismic design may not be carried out for temporary buildings. 1.0.4 As for water transport engineering buildings subject to seismic design according to this code, its seismic precaution target shall be as follows: when suffering seismic influence equivalent to local seismic precautionary intensity, it may be damaged but may still be used after general repair or without repair. 1.0.5 Generally, basic seismic intensity in Seismic Ground Motion Parameter Zonation Map of China shall be adopted as the seismic precautionary intensity of water transport engineering buildings. Seismic hazard analysis for site shall be carried out in areas with severe secondary disaster, extremely important water transport engineering buildings and high intensity; unless for LNG wharf and tank area revetment, when seismic precautionary intensity higher or lower than basic intensity is adopted, it shall be demonstrated and then submitted for approval. 1.0.6 The seismic design of water transport engineering shall comply with the requirements of this code and the current relevant ones of the nation. 2 Terms 2.0.1 seismic precautionary intensity seismic intensity which is approved according to national provisions as the criterion of seismic precaution of one region. Generally, the seismic intensity with probability above 10% in 50 years is taken 2.0.2 seismic precautionary criterion the rule for measuring the seismic precautionary requirements, which is expressed by seismic precautionary intensity or design parameters of ground motion and seismic precautionary category 2.0.3 seismic ground motion parameter zonation map the zonation map classifying the country into regions with different seismic precautionary requirements according to the index of seismic ground motion parameters 2.0.4 earthquake action the dynamic action of structure caused by ground motion, including horizontal earthquake action and vertical earthquake action 2.0.5 design parameters of ground motion seismic acceleration time-history curve, acceleration response spectrum and peak acceleration used for seismic design 2.0.6 design basic acceleration of ground motion the design value of seismic acceleration with probability above 10% during the 50-year design reference period 2.0.7 design response spectrum

Contents of JTS 146-2012

1 General Provisions 2 Terms 3 Basic Requirements 3.1 General Requirements 3.2 Seismic Precaution Classification and Precautionary Criterion 3.3 Actions and Action Effect Combination 4 Site Assessment 4.1 Site 4.2 Liquefiable Soil Foundation 5 Earthquake Action and Seismic Check for Structure 5.1 General Requirements 5.2 Earthquake Action 5.3 Seismic Earth Pressure 5.4 Earthquake Hydrodynamic Pressure 5.5 Foundation Bearing Capacity and Bank Stability 5.6 Structure Check 6 Seismic Measures 6.1 Foundation and Bank Slope 6.2 Gravity Dolphin Wharf and Gravity Pier 6.3 High-piled Dolphin Wharf 6.4 Sheet Pile Wharf 6.5 Sloping Wharf and Floating Wharf 6.6 Breakwater 6.7 Navigation Lock 6.8 Wharf Equipment and Auxiliary Facilities Annex A Calculation for Natural Vibration Period of Building Annex B Basic Contents of Special Research on Earthquake Action on High-piled Wharf Annex C Calculation for Earthquake Inertia Force and Internal Force of High-piled Dolphin wharf with Empty Box, Rigid Frame or Truss, with Height Greater than 30m Annex D Parameter Tables for Seismic Earth Pressure Annex E Explanation of Wording in This Code Additional Explanation: List of Chief Development Organization, Participating Organizations, Chief Drafting Staff, General Revisers and Management Group Staff of This Code