Structures of the Subgrade of the Old Nagasaki Highway and Abutment of the East Gate Bridge of Saga Castle

Shogaki, Takaharu (National Defense Academy) | Okuda, Daishi (National Defense Academy)


ABSTRACT The Mietsu Naval Dock (MND) is a Dutch Western-style naval base constructed in 1858 by the Saga clan at the Hayatsue River, 6 km north of the Ariake Sea in Japan. The MND was constructed with large-scale revetments and a complex assemblage of planks and logs on the soft Ariake clayey layer. However, this type of structure cannot currently be found in Japan. In this paper, to investigate a structure of similar period on soft Ariake clayey layer to understand the wooden structure of the MND, the structures of the subgrade of the old Nagasaki Highway and the abutment of the East Gate bridge of Saga Castle were examined using an unconfined compression test and cone and hardness penetration tests in the excavated trench. INTRODUCTION The Mietsu Naval Dock (MND) is a Dutch Western-style naval base constructed in 1858 by the Saga clan at the Hayatsue River, 6 km north of the Ariake Sea in Japan (Fig. 1). The MND was constructed with large-scale revetments with a complex assemblage of planks and logs on the soft Ariake clayey layer (The Chokokan Museum, 1785). However, this type of structure cannot currently be found in Japan (Shogaki and Nakano, 2017). In this paper, to investigate a structure of similar period on a soft Ariake clayey layer to understand the wooden structure of the MND, the structures of the subgrade of the old Nagasaki Highway and the abutment of the East Gate bridge of Saga Castle were examined using an unconfined compression test (UCT), portable cone (PCPT) (JGS 2015)and hardness penetration tests in the excavated trench. STRUCTURE OF THE SUBGRADE OF THE OLD NAGASAKI HIGHWAY AND THE PENETRATION DEPTH OF THE SOIL HARDNESS METER Figures 2 and 3 show the layout of the old Saga Castle and its East Gate (Kamaeguchi). The Kamaeguchi is the starting point of the old Nagasaki Highway from Saga Castle to Kokura and Nagasaki. An aerial photo of the excavation site in 2016 is shown in Photograph 1, with the foundation structures of the subgrade of the old Nagasaki Highway and the abutment of the East Gate bridge marked as A and B, respectively. The excavated trench at site A is shown in Photograph 2. The foundation structure is compacted with high-density material, featuring alternate layers of sandy and clayey soils. The results of the grain-size analysis and the physical characteristics of these materials are shown in Fig. 4 and Table 1, respectively, as well as those of the clay and sand obtained from the wall of the MND. The fine fraction content (Fc) and plasticity index (Ip) of the compacted clay for the east gate bridge are 97% and 44%, respectively, and greater than for 83% and 28% for the clay obtained from the wall of the MND.

Duplicate Docs Excel Report

None found

Similar Docs  Excel Report  more

Improved Particle Filter in Full-Depth Autonomous Underwater Vehicle Integrated Navigation1.000OnePetro
Numerical and Experimental Studies on Motion Response Characteristic of J-Lay Vessel1.000OnePetro
Numerical Simulation of Mooring System of Floating Breakwater in Shallow Water1.000OnePetro
Laboratory Measurement and Analysis of the Force Exerted by Internal Solitary Wave Over a Ridge on a Submerged Slender Body1.000OnePetro
Dynamic Response and Power Production of an Integrated Offshore Renewable Energy System1.000OnePetro
Large Eddy Simulation of Flows Around a Free Surface Piercing Fixed 2D Rectangle Using a Novel Ghost-Cell Immersed Boundary Method1.000OnePetro
Investigation on Vertical Incipient Motion of Spherical Particles in Hydraulic Collecting1.000OnePetro
Focused Wave Loading on a Fixed FPSO Using Naval Hydro Pack1.000OnePetro
Spectral Element FNPF Simulation of Focused Wave Groups Impacting a Fixed FPSO1.000OnePetro
Numerical Simulation of Phase-Focused Wave Group Interaction With an FPSO-Shaped Body1.000OnePetro
Numerical Modelling of Wave Interaction With an FPSO Using a Combination of OpenFOAM® and Lagrangian Models.1.000OnePetro
Numerical Modelling of Focused Wave Impact With a Fixed FPSO-Like Structure Using a Particle-in-Cell Solver1.000OnePetro
Numerical Simulation of Focused Wave Interactions With a Fixed FPSO Using OpenFOAM 4.11.000OnePetro
Numerical Modelling of Focusing Wave Impact on a Fixed Offshore Structure1.000OnePetro
Numerical Simulation of Focusing Wave Interaction With FPSO-Like Structure Using FNPT-NS Solver1.000OnePetro
Numerical Simulation of FPSO-Like Structure in Waves by RANS Method1.000OnePetro
Modeling Uncertainty in Extrapolated Extreme Loads for Offshore Wind Turbine Support Structures1.000OnePetro
Numerical and Experimental Investigation of Extreme Events in JONSWAP Seas1.000OnePetro
Advanced Reliability Assessment of Offshore Wind Turbine Monopiles by Combining Reliability Analysis Method and SHM/CM Technology1.000OnePetro
Design and Performance Analysis on 5kW Prototype Device of Heaving Float Wave Energy Conversion With Liquid Metal MHD Generator1.000OnePetro
Physical-Mechanical Properties of the Bottom Formations of the Hydrothermal Ore Fields on the Mid-Atlantic Ridge1.000OnePetro
Study on Dynamic Simulation for Produced Oil-Gas-Water Mixtures Treatment Process in Offshore Heavy Oil Thermal Recovery1.000OnePetro
Experimental Feasibility Study of a Novel Organic-Inorganic Hybrid Material for Offshore Oil Well Cementation1.000OnePetro
CFD Modeling on Gap Flows of Two Ships With Side-by-Side Configuration in Waves1.000OnePetro
An Experimental Investigation of Icevaning Control for the Arctic Station-Keeping1.000OnePetro
Application of RPD on Spudcan Sliding During Jack-Up Installation Near the Footprints1.000OnePetro
Comparative Study of Wave Impact Loads on Circular Cylinder by Breaking Waves1.000OnePetro
On the Absorption of Wave Power Using Ship Like Structures1.000OnePetro
Experimental Verification of CH4 – CO2 Replacement in Various Gas Hydrate Structures for CH4 Production and CO2 Sequestration1.000OnePetro
Comparison of Liquefaction Processes for FLNG1.000OnePetro
Residual Ultimate Strength of Simply Supported Corroded Plates With Initial Geometrical Imperfections Under Uniaxial Compression1.000OnePetro
A Model Test on a Rigid Pipe Installation Using J-Lay Method1.000OnePetro
A Full 3D Time-Domain Numerical Model for the Wave-Induced Motion of a Floating Body in Shallow Water1.000OnePetro
Nonlinear Analysis of Large-Diameter and Thin-Walled Submarine Pipeline Against Fault Movement1.000OnePetro
The Effect of Wavelength on a Floating Body and Its Location for Wave Energy Absorption Using CFD1.000OnePetro
Structural Health Monitoring (SHM) of Residual and Applied Stresses Using a Non-Destructive Ultrasonic Technique1.000OnePetro
A Concept of Adapting an Oilfield Subsea Tree for Gas Hydrates Production1.000OnePetro
Simulation of Topograpical Change in an Offshore Wind Farm1.000OnePetro
Dynamic Response of a Deepsea Mining Riser1.000OnePetro
A Procedure for Assessment of Umbilical Fatigue Damage1.000OnePetro
Evaluation of Geotechnical Properties and Chemical Weathering Indices of Highly Weathered Granite Rock1.000OnePetro
Historical Developments in the Design and Construction of Ice Strengthened Vessels1.000OnePetro
Fatigue Crack Growth Simulation Using Characteristic Tensor1.000OnePetro
Marine Bottom Boundary Layer Sediment Flux Measurements of Fluidized Mud and Muck Using Vertical and Horizontal Sonde Arrays1.000OnePetro
Experimental Study on Flow-Induced Motion of an Array of Three Cylinders With Circular, Square, and Diamond Sections1.000OnePetro
Experimental & Numerical Study of Anti-Roll Tanks1.000OnePetro
Concomitant Wave and Current Effects on Vortex-Induced Motion (VIM) of a Large-Volume Semisubmersible Platform1.000OnePetro
Study on Punch-Through Prediction and Risk Control Method of Jack-Up Spudcan1.000OnePetro
A Dynamic Ice-Structure Interaction Model for Non-Simultaneous Ice Failure1.000OnePetro
Adaptation of Directional Wave Measurement in 3D Physical Model to Eliminate the Reflection Component in Uni-Directional Waves1.000OnePetro
Numerical Study on Influence of Turbulent and Steady Winds on Coupled Dynamic Response of 6-MW Spar-Type FOWT1.000OnePetro
Numerical Study of Zigzag Maneuver of a Fully Appended ONR Tumblehome Ship in Waves1.000OnePetro
Numerical Study of Wake Interactions Between Two Floating Offshore Wind Turbines1.000OnePetro
Numerical Simulations of Flows Around Floating Offshore Wind Turbine1.000OnePetro
Simulation of Dam-Break Wave Impacting Onto the Square Column by GPU Accelerated MPS Method1.000OnePetro
Numerical Study of a Fixed FPSO-Shaped Body Under Focused Waves With Different Headings1.000OnePetro
Numerical Simulations of Vortex Shedding of a Circular Cylinder Experiencing Oscillatory Flow at Low Keulegan-Carpenter Numbers1.000OnePetro
Numerical Analysis of the Interaction Between a Fixed FPSO Benchmark Model and Focused Waves1.000OnePetro
Numerical Simulations of Wake Flows of Wind Farm With Fourteen Wind Turbines1.000OnePetro
Numerical Investigation of Scale Effect for Propeller Boss Cap Fins1.000OnePetro
Numerical Study on Run-Up and Wave Impacts Between Breaking Wave and a Circular Cylinder1.000OnePetro
Numerical Study of Solitary Wave Slamming on a 3-D Flexible Plate by MPS-FEM Coupled Method1.000OnePetro
Comparative Study of SST-SAS and SST-DDES in Predicting Massively Separated Flow1.000OnePetro
Modal Analysis of a Top-Tensioned Riser Experiencing Vortex-Induced Vibration and Varying Axial Tensions1.000OnePetro
Vortex Shedding and Its Impacts on the Motions of a Paired-Column Semi-Submersible1.000OnePetro
Robust MRAC With Anti-Windup Compensator for the Depth Channel of an Autonomous Underwater Vehicle1.000OnePetro
Positioning Capability Analysis of Wind Turbine Installation Vessel1.000OnePetro
The Optimization Design Method of Multiple Airfoils Model Blades1.000OnePetro
Numerical Investigation for Mooring System Analysis Accounting for Blade Force1.000OnePetro
Study of Free Vortex Wake Method With Curved Filament Correction1.000OnePetro
Hull Form Optimization Design of KCS at Full Speed Range Based on Resistance Performance in Calm Water1.000OnePetro
New Wave Spectrums Models Developed Based on HOS Method1.000OnePetro
Ship Hull Form Optimization Design for KCS Considering Uncertainty of Ship Speed1.000OnePetro
CFD Investigation of Flow Interactions of Four Fixed Columns With Free Ends in Square Configuration1.000OnePetro
Numerical Simulations of Sheet and Cloud Cavitation on NACA0015 With RANS and LES Turbulence Model1.000OnePetro
Multiphase MPS Method for Two-Layer-Liquid Sloshing Flows in Oil-Water Separators1.000OnePetro
Multi-Objective Optimization Design of KCS Based on Seakeeping Performance1.000OnePetro
Numerical Study of the Effects of Grid Scale on Bow Wave Breaking1.000OnePetro
Study of Underwater Vehicle's Wake in Seawater of Linearly Gradient Temperature and Density1.000OnePetro
Multi-Disciplinary Optimization Design of Sail for Underwater Vehicle Model1.000OnePetro
Numerical Study of Vortex Induced Motions of Spar and Semi-Submersible Platforms at High Reynolds Numbers1.000OnePetro
Design of Leg Mating Unit for Float-Over Installation1.000OnePetro
Assessment of Docking Operation During Float-Over Installation on Jacket Structure1.000OnePetro
Mating Analysis for Float-Over Installation of a Large Topside in Various Load Transfer Stages1.000OnePetro
Dynamic Analysis of Moored Multi-Body System1.000OnePetro
Integrated Simulation Framework for Offshore Installation Operations Considering Various Ocean Environment1.000OnePetro
Numerical Simulation of Tsunami Run-Up Around Coastal Structures on Quadtree Grids1.000OnePetro
A Numerical Study on the Influence of Variation of Underwater Landslide Shape on Tsunami Generation1.000OnePetro
A Research of Breaker Impulse1.000OnePetro
Effects of Erosion Control Structures on Shoreline Evolution of the Tainan Gold Coast, Taiwan1.000OnePetro
Simulation of Coastal Flooding During a Typhoon Event With the Consideration of Future Sea-Level Rises in Tamsui River1.000OnePetro
Undersea Noise and Scale Effect of Counter-Rotating Propellers in Tidal Stream1.000OnePetro
Incompressible SPH for Simulating Violent Sloshing in Tank With Different Baffles1.000OnePetro
Actuator Line Method for Simulating NREL 5-MW Turbine Wakes1.000OnePetro
Numerical Simulation of 2D Wave-Structure Interaction Using IMLPG_R1.000OnePetro
Experimental Investigation of Floating Debris Impact Loading on Structures During Extreme Waves Like Tsunami1.000OnePetro
Numerical Investigation on Heat-Flow Coupling Mechanism in Cargo Oil Heating Process for an Arctic Tanker1.000OnePetro
Experimental Study on Heating Process for Cargo Oil in Sloshing Tank1.000OnePetro
Analysis of the Tower Influence on Floating Offshore Wind Turbine Aerodynamic Performance Based on CFD Method1.000OnePetro
Numerical Simulation of Attenuator Wave Energy Converter Using One-Fluid Formulation1.000OnePetro