Solar tracker structure is usually installed outdoor. Therefore, the structure can be influenced by wind load and snow load. In this study, the safety evaluation is performed by analyzing the results according to structural modelling and analysis for solar tracker structure. Also, solar tracker structure module is presented under the various design variables.

In this strudy, it establish nonlinear finite element analysis for beam-to-column connections constituted high strength steel beam and general mild steel beam. it analyze major structural performance of connections according to stiffness and strength of both-way beams and it consider the structural problem of application of high strength steel beam through the analysis results.

The structural deformed shape is important information to structural analysis. SFSM-LS algorithm, the economic and effective estimation method for the structural deformation shapes with limited displacement measuring points is developed(Choi, 2003). In this study, structure internal forces are estimated by using structural deformed shape.

In this study is experiment result of steel fiber reinforced concrete shear walls with deformation capacity and structural performance. To assess the deformation capacity and structural performance of shear walls, slits and steel fiber was used as a variables. The experimental results show that steel fiber reinforced concrete shear wall is superior compared to normal reinforced concrete shear wall. The experimental results of shear wall with slits is too.

Long span arch structure is composed of arch as relatively flexible structure and column as relatively rigid structure. In this study, the characteristic of dynamic response is analyzed according to the dynamic characteristics between arch and columns. The result of analysis for arch as relatively vertical vibration mode is dominant, the influence of columns mainly appears at relatively high frequency band according to increase of 1st mode frequency in column.

Aluminum angles are widely used as tension members with bolted connection in buildings. In current design specification for net tensile capacity, reduction factor (U) is usually used to account for the effects of shear lag and bending induced from load eccentricity. In this paper, an investigation on reduction factor (U) of bolted angle connections was conducted and focused on net section efficiency according to the change of plate thickness and bolt arrangement. Exception to some specimens with short end distance and 1x1 bolt arrangement, all most specimens failed by net tensile fracture accompanied by curling at outstanding leg. The value of curling deformation has increased with increase of end distance (e) and the curling influenced the fracture mode of bolted angle connection. Also, net section efficiency has tended to increase according to the increase of bolt number and plate thickness.

Finite analysis of tower structure using beam element and shell element. Investigation of collapse mechanism including local and global failure. Verification of analysis model through comparison with actual collapsed tower structure. Propose of analytical ultimate strength of member based on nonlinear analysis of local and partial finite element model.

In this study, to Assess the Structural performance of Reinforced Concrete Shear Wall with different Slit Length. Variable of analysis is slit length(0, 600, 1200, 1500, 2400mm), showed excellent accuracy. Maximum load is decreased when the slit length increased. But Side sway of maximum load is increased when the slit length increased.

A deterioration of typical reinforced concrete bridge deck is due to the use of calcium chloride, cracks and water penetration inside of the deck slab with steel reinforcement. Therefore, in order to eliminate the defects of reinforced-concrete decks in terms of material, the steel-straped deck system is studied and developed by maximizing the arching effect while the girders are restrained using straps in lateral direction to the bridge. This parametric study was performed to analyze the structural characteristics of steel-straped deck, and to identify the factors of the thickness, span length and lateral restraint stiffness of deck slab considering the concrete nonlinearity.

Finite element analysis using Tower of the beam element. Investigate the mechanisms leg buckling of tower parts. Characterization of the role and behavior of aids and aids to optimize the use of the present one square Envoy maximize workability and economy. The proposed square Envoy existing triangle to reveal that more than reasonable and the absence of nodal wind load compared to the size of history.

The structural damage patterns of the Korean Traditional Wood Structures classified as the Jushim-po and Da-po Type are investigated. The investigations are based on the reports of repairing or actual measurements for the Jushim-po and Da-po structures. Lastly, the vulnerable parts according ot structural systems are analyzed statistically.

In this study, it was developed eco-friendly zero cement fiber reinforced concrete using ground granulated blast furnace slag and alkali activator(water glass, sodium hydroxides). Also, it was evaluated the flexure capacity of the RC beams using zero cement concrete. The eco-friendly concrete using zero cement encouraged alkali activation reaction has rapid hardening speed and showed possibility as a high strength concrete. Also, the RC beams applied this showed similar movement and destroy tendency with RC used previous cement.

Fiber reinforced polymer (FRP) reinforcing bars for concrete structure, as a non-corrosive material, has been extensively investigated by many researchers. However, it has not been practically used as the reinforcement or structural material in civil engineering structures due to its low elastic modulus if glass fibers were used. This study was motivated to overcome this shortcoming of FRP bars to be used for concrete structures. Material hybridization was applied to enhance its elastic modulus. The effect of material hybridization was evaluated by comparing the results of tensile test with those of non-hybrid FRP bars.

The ultimate flexural behavior of composite shell structure stiffened by steel pipe is investigated experimentally in this paper. Total 4 kinds of experimental specimens are constructed according to the size of steel pipe and diameter of GFRP septic tank. The load-displacement curves of the test are provided. xial and hoop stress of GFRP septic tank and flexural stress of steel pipe are obtained. The experiment results are useful for the verification of three-dimensional numerical analysis.

Since electrical resistivity of concrete can be measured in a more rapid and simple way than chloride diffusivity, it should be primarily regular quality control of the electrical resistivity of concrete which provides the basis for indirect of quality control of chloride diffusivity during concrete construction. This study can provide a non-destructive approach for durability design of marine concrete and it is expected that the result is subsequently used as a calibration curve for an indirect control of the chloride diffusivity based on regular measurements of the electrical resistivity during concrete construction.

Woods are used as a main material for the domestic Traditional Buildings and most Traditional Wood Structures should be conserved as Traditional Assets. To be conserved, structural performance should be evaluated. So traits of the materials are to be studied. Therefore characteristics of structural deterioration of Traditional Wood Structures are to be analysed on this study.

As the interest in leisure sports is recently increasing domestically and internationally, the number of descending experience in the air facilities is increasing. Study on the cable and wire installed on a bridge has been actively preceded from the past to the present, but for descending experience in the air facilities for leisure sports, an accident occurs frequently and examination the structural safety of these facilities is still insufficient. Therefore, structural safety by dynamic impact is evaluated through 3-dimensional infinite element modeling and analysis of the steel cable for leisure sports previously installed. It is judged that more systematical safety than before could be secured based on this.

The priority order about a rational repair and reinforcement is generally decided by subjective decision of engineer. An appearance investigation carried out to decide about a rational repair and reinforcement through systematic and objective analysis in tunnel. we could prevent expecting leakage through several improvements in the aspects of design, materials and site implementation.