Improvement of displacement absorbing performance by utilizing the moving clips in order to prevent falling off of the exterior material according to earthquakes and wind, trying to examine the structural performance of the building exterior panel.

To obtain design parameter of soil protection structure having anchor type foundation, model test is executed for flexible and rigid structures. Empirical equation for soil impact force with variation of slope angle and spacing is suggested in this study.

To improve the shear bonding capacity of deckplate and concrete, we retrofit shape of 150 TU deck and performed fire resistance test. Fire resistance test results show 90 minutes fire resistance capacity for 6kN/m2 live load condition.

In this study, applicability of the steel grid composite deck to temporary or building structure is reviewed. structural performance such as flexural strength, and serviceability is compared with those of the existing deck structures. the result shows that the steel grid composite deck is applicable to horizontal supporting member of temporary of building structure.

The connection parts of electric distribution cable can be damaged by wind and various types of outer loads. So, the reasonable connection system is required to solve these problems. Therefore, this study presents the composition type of self-tensioning connection system for electric distribution cable.

This study is a result of the dynamic characteristics of the tall building using real time structural health monitoring system. The monitoring system consist of an anemometer, accelerometers, GPS and internet-based data logging system. Through this realtime ambient measurement data, evaluate the serviceability of the building.

In this study, a half-precast composite concrete slab using a strain-hardening cementitious composites has been tested. To compare with RC slabs, the developed slab can minimize longtitudinal reinforcements and improve crack control through strain-hardening behavior of fiber cementitious composite.

Long span structures like space-structures have instability phenomenon, jump buckling or bifurcation. And these instability phenomenon responds very sensitivity, depend on the initial condition. In this study, define the 1-degree of freedom space structure and when model has beating load, analysis critical load of model using 3D contour map for load, variable , displacement in the axial. The analysis results, when  is 1.0, is able to see the lowest critical load and the resonance phenomenon.

In this study, an analytical study on the effect of the support structure deflection on the impact test result was carried out to set up the accurate impact test method. Various impact analyses of the CEDM(control element drive mechanisms) impact test were performed using LS-DYNA commercial FE program. Finally, the effect of the boundary condition of the support structure and impact loading duration were investigated.

An ICH RC (internally confined hollow reinforced concrete) tower for supporting 5.0MW wind turbine was developed and its standard sections were designed. It was found that ICH RC wind tower is satisfied with maximum 200% bigger moment which is required for pre-existing steel tower. Also, the results from the FAST showed that 5.0MW turbine can be normally operated with the ICH RC tower.

In this research, we carried out design and analysis with joint of concrete supporting structure for offshore wind energy. We developed load transfer mechanism about applied load induced from steel tower to concrete foundation. Also, a commercially available finite element program, ABAQUS 6.10, is used to analyze behavior of structure.

We studied design and structural analysis of jack-up barge footing system that can be safely and quickly installed offshore support structure. In this paper, we checked the buckling strength for a structural member in spudcan based on DNV-RP-C201

This study investigates the effect of elevated temperatures on the pore structure of cement paste which, in turn, can provides information to evaluate the damage level of concrete structures due to fire. Mercury intrusion porosimetry (MIP) test was conducted for this investigation. Test results showed that the higher the temperature, the higher is the pore volume of cement paste and the wider is the pore distribution.

Selection of a typical four companies products of domestic structural one-component sealant, high temperature, low temperature, room temperature to set up the environment for each of 80, -20, 20 ℃ and the left and right displacement of the test piece 30, 15, 0% of the maximum compression / expansion It was carried out by the repeated fatigue.

This study proposes a measurement method using angular sensors to measure deformation and displacement of bridges. The proposed measurement method consists of gyroscope sensors and data processor to transform angular to vertical displacement. This study contains experimental evaluation to verify the applicability of the proposed method. 3-points bending tests were conducted on a small-sized girder specimen. The displacements were measured with both conventional LVDT and gyroscope sensor to compare the accuracy of the proposed method. It is estimated that the method using gyroscope shows some noise in data, but the method using gyroscope has advantages to measure the vertical displacement. Therefore if the sampling rate and synchronizing problems can be approved, it can be a good alternative measuring method for the deformation of the bridges.

From the past, space structure have been widely used as sports arenas, religious facilities. And the demand and research for retractable structure is increasing recently. Therefore, we classify the retractable mechanism which is divided according to the retractable method of structures and survey the present condition of retractable structures built around the world.

This study proposes a measurement method using angular sensors to measure deformation and displacement of bridges. The proposed measurement method consists of gyroscope sensors and data processor to transform angular to vertical displacement. This study contains experimental evaluation to verify the applicability of the proposed method. 4-points bending tests were conducted on a small-sized girder specimen. The displacements were measured with both conventional LVDT and gyroscope sensor to compare the accuracy of the proposed method. It is estimated that the method using gyroscope shows some noise in data, but the method using gyroscope has advantages to measure the vertical displacement. Therefore if the sampling rate and synchronizing problems can be approved, it can be a good alternative measuring method for the deformation of the bridges.

이 연구에서는 플랜트 지하구조물의 상태평가를 위해 국내외 기준을 확인하고 플랜트 지하시 설의 핵심평가 요소 도출을 통하여 향 후 플랜트 지하구조물의 상태평가를 위한 기초 자료로 활용하고자 한다.

Structural performance of cable-bridge has been evaluated based on the field load test and the measurement monitoring system of existing Nielsen arch bridge. The measured acceleration data was converted to the displacement of girder and the tension of cable in the process of numerical integration and maximum frequency detection algorithm..

These days, inexpensive and high efficiency UAV(Unmanned Aerial Vehicles) of disaster prevention and spatial information has been given more attention. But studies about test of accuracy of UAV were not enough despite high interest. UAV technology has been developed for military purposes, but in recent years, it has been used for various purposes in different forms in the private sector as spread to the public sector. However, since the study applying the UAV technologies to the inspection and maintenance of structures are insufficient so far, this study suggests an application method of UAV technology for inspection and investigation of infrastructure facilities. If the UAV technology is used in inspection and investigation of infrastructure facilities, it will be able to conduct a safety check and inspect high areas and narrow passages, which are difficult or impossible to access by manpower, and further improve the safety of the structure.