The paper presents a comparison of available shear strength models of RC columns by considering the effect of axial force. Although various shear strength models are proposed by many researchers, some of them neglect the effect of axial force. Thus, to clarify the effect of axial force on shear strength, the comparative study is conducted with a total of 54 experimental data of RC column collected from the PEER center. The shear strength of RC column is also evaluated with design code.

In this study, the lap joint performance for SFRC beam with different depths was evaluated. The specimens had the lap splice details using the high-strength headed reinforcement. For the SFRC beam with different depths, the headed reinforcement which is overlapped more than 20 times of the rebar diameter has sufficient lap-splicing performance.

In this study, collision analysis of overlay concrete median barrier under truck load was conducted depending on location of rebar and shear key. Obtained results indicates that the impact resistances of overlay concrete median barrier was improved as the rebar and shear keys are more closed to the top surface of the CMB.

Soundless Chemical Demolition Agent (SCDA) has been spotlighted for demolition of concrete structure or rock near or in urban areas and historical places since it does not produce dust or rock fragmentations compared to explosive and gas pressure blasting methods. However, there is no guideline or design code for the demolition of existing structures using SCDA. In this study, numerical analysis using ABAQUS is conducted in order to find a minimum required pressure for the initiation of crack in concrete body with SCDA and obtained results in this study could be a basic data for design of hole spacing for the demolition of the structures using SCDAs.

In this study, the flexural performance of concrete beams containing recycled aggregate was evaluated. The test variable are recycled coarse aggregate content of 0, 30, 50, and 100%. As a result of the analysis, the prediction result of the flexural strength of the concrete beam underestimates the actual flexural strength.

In this study, We have carried out 2D & 3D numerical analysis is to find the cracking causes of fixed cantilever wall during transverse pre-stressing after construction of the reaction bed. The material properties, which are used to numerical analysis, are the results of the core specimens analysis of casting bed. And we have checked the design codes in case of the concrete core specimen strength is less than the design strength.

In this study, We could foresee the consolidation settlement at the bridge transition part by APDL(Ansys Parameter Design Language) technique, which is properly applied to the three dynamic interaction analysis. A series of the automatic numerical procedure applied to predict of a plastic settlement by train driving.

This study will evaluate the characteristics of the building code and program analysis by comparing the result of the wind loads design criteria and the results of the wind loading program modeling analysis, and evaluating the suitability of the program models through analysis results and interpretations of the program.

This study will evaluate the characteristics of the building code by analysing the result of the wind loads design criteria, and evaluating the characteristics of the KINBC2016 wind load criteria.

The flexural capacity of beam-column connection using FRP bars as a longitudinal reinforcement was higher than the predictions obtained using the equivalent stress block, whereas its flexural ductility was considerably lower than the companion connections using mild longitudinal bars.

In the case of steel railway bridges passing through the urban area, many civil complaints are being raised due to such a structure borne noise. A method of attaching a high-efficiency damping panel to a steel plate is proposed as a solution to the structure borne noise, but the behavior according to the exact adhesion rate is not shown. Therefore, in this paper, a basic study for applying a high efficiency damping panel to a steel railway bridges is to measure the mobility according to the adhesion rate of a high efficiency damping panel on a 1m × 1m steel plate.

Transition piece of offshore wind turbine tower is one of the main parts which takes the direct load and pass on to the lower support structure. In this study, a new design method for the transition piece has been developed. The trasition piece was designed based on the the load flow which was analyzed by approximation and was evaluated by FEM.

Recently, researches on FRP bars have been carried out as a solution to improve the durability of reinforcing steel bars. In the study, an experimental program was conducted to evaluate the development performance of GFRP bars for SFRC beams. Specimens were failed by splitting fracture. The development performance by the center lap joint was larger than the development of end of beam. As the lap length increased, the development performance was increased but not proportional.

This research is about the optimization of design and application of the horizontal shear connectors for composite PC slabs. As a result of test, the improved horizontal shear connector shows a structural performance that can displace the lattice horizontal shear connector.

Numerical behavior of GFRP(Fiber Reinforced Polymer) infill panel in steel frame structure was evaluated through the finite element analysis in this study. In order to numerical analysis, a experimental test results was used to develop a three dimensional finite element model of steel frame specimen. Based on the developed three dimensional finite element model of steel frame specimen, the behavior of GFRP infill panel in the steel frame specimen was evaluated. From the numerical analysis results, strength of the steel frame specimen with GFRP infill panel was governed by GFRP infill panel. Also, diagonal compression behavior governed the GFRP infill panel in the steel frame specimen in the numerical analysis results.

The map crack occurred in the concrete barrier and this crack is caused by the Alkali—Silica Reaction. As a result of the collision analysis according to the damage of the barrier, the barrier was found to be below the reference of structural performance when the crack height was 50cm or more. In the case, improvement is considered necessary.

It was studied structural design of nonuniform UHPC concrete structural members. UHPC concrete has the compressive strength of 120-200MPa, the tensile strength of 8-20MPa, and the tensile strain of 1.0-5.0%. There are two types of specimens of nonuniform members improved in bending and shear performances. The specimens were evaluated by beam load test induced by bending and shear failures.

The precast modular bridge that combines pre-designed standard modules was constructed by KICT. A field test was performed to estimate the structural performance of this bridge. As a result, this bridge has sufficient safety and serviceability as a highway bridge.

This study is an analytical research on the size effect of concrete flexural-compressive strength. The meso-scale finite element method was used to analyze various sizes of specimens. As a result of the analysis, the size effect that the flexural-compressive strength becomes smaller as the size of specimen becomes bigger is analytically confirmed.

This study is to evaluate the seismic demand of reinforced concrete structure considering the incident angle of the ground motions. For this purpose, a three-story structure is numerically analyzed under the three ground motion records through a multi-component incremental dynamic analysis (MIDA). The MIDA, an implementation of Incremental dynamic analysis, investigates two components of seismic excitation in which all accelerations are scaled to spectral accelerations at the fundamental natural periods of the buildings. The obtained results indicate the influence of the incident angle should be considered in the assessment response of structures. Maximum inter-story drift of structure will behave in the elastic or inelastic range depending on the variable incident angle