In this paper, the finite element analysis of RC frame with concrete compressive material models proposed by many researches were conducted. As a results of FEA, the concrete model suggested by Saenz was compatible than other concrete models from the perspective of initial stiffness and maximum strength.

In this paper, seismic performance of RC frames reinforced by chevron braces were evaluated. The purpose of experimental study was to increase the stiffness of RC frames. As a results, if steel bracing was reinforced in RC frames, seismic performance of RC frames would be increased.

High-strength bolt has high stiffness and fatigue strength. At this time, initial axial force is one of main factor to affect the strength and deformation behavior of connection. Therefore, the objective of this study is to investigate reduction of initial axial force in high-strength bolt under shear fatigue.

The purpose of this study was to analyze the reduction of clamping force of TS (torque shear) bolted connection under fatigue loading. Generally, TS bolt has been totally tightened by torque shear wrench. However the plant structures experienced various fatigue loadings that makes reduction of clamping force of TS bolt. Therefore, this study conducted to the fatigue load test.

The purpose of this study was to investigate deformation and reduction of initial clamping force in slip critical type connection under fatigue loading. And, the parameters of this study were the different clamping force and friction coefficient of surface of plate. As a result, the clamping force of all specimens were generally decreased in comparison with initial values under fatigue loading.

Some researchers suggested that bolt slippage occurred in column-tree connection type. In this paper, bolt slippage was evaluated on different depth of beam. When the length of beam set 7,500 mm equally, three depth of beams was 600, 500, 400mm, respectively. Also, column size of all specimens was same, and panel zones was strongly reinforced to evaluate bolt slippage in beams. As a result of full-scale testing, the bolt slippage of all specimens was occurred within plastic rotation ± 2.0%. It was showed that the effect of bolt slippage on depth of beam was slight.

The purpose of this study is to analyze the trend of domestic and foreign steel plate shear wall (SPSW) systems. The investigated countries were three, such as Korea, Canada, and U.S. The full scale or scale down specimens were preponderantly investigated. The details and performances of all specimens were compared for each other.

This paper presented to study used Abaqus on steel plate bonded reinforcement technology for column to beam connections, and then the result showed that steel plate bonded reinforcement technology has great reinforcement effect for RC column to beam joint. Also the steel plate bonded reinforcement technology was safety and convenient operation.

Steel moment-resisting frames are susceptible to large lateral displacements during severe earthquakes. However, frequent damage to concentrically braced frames in past earthquakes, such as the 1994 Northridge earthquakes, has raised concerns about the ultimate deformation capacity of this class of structure. Also, there is no way to accurately predict the behavior of the brace member in the event of earthquakes. Therefore, the objective of this study is to compare the performance of chevron braced frames when they are used in the upgrade of deficient RC frames.

The purpose of this paper is to check the safety of the scaffold structures used wire rope. The structural safety on the scaffold structures with wire rope and boiler furnace was evaluated. As a results, all assessment structures with wire ropes were checked to be safe.