For important structures such as nuclear power plants, In-Structure Response Spectrum (ISRS) analysis is essential because it evaluates the safety of equipment and components installed in the structure. Because most structures are asymmetric, the response can be affected by eccentricity. In the case of seismically isolated structures, this effect can be greater due to the difference between the center of mass of the structure and the center of rigidity of the isolator layer. Therefore, eccentricity effects must be considered when designing or evaluating the ISRS of seismically isolated structures. This study investigated the change of the ISRS of an isolated structure by assuming accidental eccentricity. The variables that affect the ISRS of the isolated structure were analyzed to see what additional impact they had due to eccentricity. The ISRS of the seismically isolated structure with eccentricity was amplified more than when there was non-eccentricity, and it was boosted more significantly in specific period ranges depending on the isolator’s initial stiffness and seismic intensity. Finally, whether the displacement requirement of isolators can be applied to the variation of the ISRS due to eccentricity in the design code was also examined.

This study investigated the seismic performance of reinforced concrete (RC) wall-slab frames with masonry infills. Four RC wall-slab frames with or without masonry infill were tested under cyclic loading. The RC frames were composed of in-plane and out-of-plane walls and top and bottom slabs. For masonry infill walls, cement bricks were stacked applying mortar paste only at the bed joints, and, at the top, a gap of 50 mm was intentionally left between the masonry wall and top RC slab. Both sides of the masonry walls were finished by applying ordinary or fiber-reinforced mortars. The tests showed that despite the gap on top of the masonry walls, the strength and stiffness of the infilled frames were significantly increased and were different depending on the direction of loading and the finishing mortars. During repeated loading, the masonry walls underwent horizontal and diagonal cracking and corner crushing/spalling, showing a rocking mode inside the RC wall-slab frame. Interestingly, this rocking mode delayed loss of strength, and as a result, the ductility of the infilled frames increased to the same level as the bare frame. The interaction of masonry infill and adjacent RC walls, depending on the direction of loading, was further investigated based on test observations.

In order to evaluate the earthquake safety of equipment in structures, it is essential to analyze the In-Structure Response Spectrum (ISRS). The ISRS has a peak value at the frequency corresponding to the structural vibration mode, but the frequency and amplitude at the peak can vary because of many uncertain parameters. There are several seismic design criteria for ISRS peak-broadening for fixed base structures. However, there are no suggested criteria for constructing the design ISRS of seismically isolated structures. The ISRS of isolated structures may change due to the major uncertainty parameter of the isolator, which is the shear stiffness of the isolator and the several uncertainty parameters caused by the nonlinear behavior of isolators. This study evaluated the effects on the ISRS due to the initial stiffness of the bi-linear curve of isolators and the variation of effective stiffness by the input ground motion intensity and intense motion duration. Analyzing a simplified structural model for isolated base structure confirmed that the ISRS at the frequency of structural mode was amplified and shifted. It was found that the uncertainty of the initial stiffness of isolators significantly affects the shape of ISRS. The variation caused by the intensity and duration of input ground motions was also evaluated. These results suggested several considerations for generating ISRS for seismically isolated structures.

본 연구는 지방 소도시지역 활성화를 위해 그 지역이 본원적으로 소유하고 있는 역사문화자원을 활용하여 지역주민의 삶의 질 향상을 도모하고 관광객의 유입을 유도하기 위한 지역재생사업의 방향설정 및 추진체계를 주 내용적 범위로 한 바, 첫째, 문화재형 지역재생사업에 있어 중요한 것은 문화유산에 중점을 두기보다도 문화재와 관련되어 있는 지역의 인적 요소의 참여가 성공의 중요한 요소로 주목할 필요가 있다. 둘째, 일차적으로 가시적인 성과를 얻기 위한 공공디자인의 도입 효과는 일시적이고 단기적인 성과에 그치기 쉽기 때문에 이와 동시에 지역재생을 수행할 수 있는 지역의 인적 전문가의 육성이 절대적으로 필요하며 동시에 정보를 소통할 수 있는 체계의 구축이 필요하다. 셋째, 타 정부기관의 초창기 지역재생은 물량투입을 주로 하면서도 그 성과는 아직 불투명하지만, 최근의 지역재생의 흐름은 인적 자원을 중시한 방향으로 전환하고 있음을 고려할 필요가 있다. 넷째, 기 시행되었던 문화재청의 “문화재 생생 활용사업”은 소정의 성과를 거두고 있으며 내용상 지역재생으로 발전시킬 수 있는 요소가 상당히 있어 이와 연계 또는 발전시키는 방법도 또 다른 지역재생 시범사업이 될 수 있다. 다섯째, 문화재형 지역재생사업의 특성을 잘 나타내는 사업명을 발굴할 필요가 있다. 여섯째, 지역재생은 장기적인 비전을 가지고 수행해야할 사업이지만, 풍경유산을 중점에 둔 지역재생을 실시할 경우에는 우선 풍경유산의 요소와 체계를 구축하고 관리할 수 있는 체계의 구축이 최우선 과제이다. 일곱째, 문화재청에서는 문화유산의 지역재생을 확충하기 위해서는 이를 전담하는 문화유산 재생전담팀의 설치가 필요하고 이를 통해 체계적이고 효율적인 지역재생의 행정적 접근방법이 필요하다. 동시에 문화유산을 지역재생에 적극적으로 활용할 수 있도록 수평적 연계를 강화하는 것은 필수적이다. 여덟째, 지역재생에서 사회적 자본의 성격을 띤 문화유산은 관리체계가 문화재청과 자치단체로 나누어져 있어 관리체계가 이원화 되어 있지만, 지역재생에서는 이 두 가지를 동시에 활용해야 할 경우도 발생하기 때문에 문화재의 통합관리체계를 구축하여야 한다.

최근 사회 전반에 걸쳐 인터넷 포털 사이트의 명예훼손 책임에 대한 논의가 주요 이슈로 등장하고 있다. 주로 문제되는 것은 포털 사이트의 뉴스게재와 게시물 방치로 인한 불법행위 책임의 성립여부이다. 이러한 논의는 인터넷 포털 사이트가 과연 언론에 해당하는지 여부에 대한 논의와도 깊은 연관성을 가지고 있다. 본고에서는 인터넷 포털 사이트의 명예훼손 책임에 대한 미국과 일본의 입법 및 판례이론을 살펴보고, 이를 통해 포털 사이트의 책임범위 확정과 관련하여 각국에서 제시하고 있는 면책기준들을 검토한다. 이어서 포털 사이트의 명예훼손 책임과 관련된 국내의 법령들을 간략히 살펴본 후, 우리나라 판례의 태도를 심층적으로 검토한다. 먼저 인터넷 사이트 게시판을 통한 명예훼손과 관련된 과거 대법원의 판결들을 검토한 후, 포탈 사이트의 명예훼손 책임을 정면으로 다룬 이른바「억울하게 죽은 내 딸」사건(서울고등법원 2008. 7. 2. 선고 2007나60990 판결) 을 중심으로 국내 판례에서 제시하고 있는 포털 사이트의 명예훼손 책임 기준을 검토한다. 아울러 위「억울하게 죽은 내 딸」사건에서 촉발된 법리적 논쟁들에 대한 개별적인 검토를 끝으로 본고를 마무리 한다.

The development and verification of seismic performance possible role as moment resisting frames connection is needed because rigidly-connected and assembled lightweight steel frame system is not easy to obtain the seismic performance at the same time.

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.

By the earthquake and the wind against the displacement that occurs in buildings by utilizing the movement of the clip architectural exterior panels can follow the displacement and deformation by preventing the loss of architectural exterior panels to protect life and property.

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.

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.

Using trapezoidal corrugated plates in shear reinforcing systems improves stiffness and flexibility in the deformation along the corrugation. However, shear buckling behaviors is difficult to predict the relationship between the corrugated shape. In this study, a cyclic loading test of the trapezoidal corrugated plate was performed to evaluate the effects of energy dissipation capacity were compared according to the test results.

The purpose of this study is to get analytic solution of space truss using homotopy perturbation. A homotopy perturbation was derived by formulating a governing equation for a space truss, and a semi analytical solution was obtained by homotopy perturbation. In conclusion, the analytical solution of the simple nonlinear model using the homotopy perturbation was compared with the numerical analysis result.

This study aims to suggest the available additional education courses that can be combined with the existing functional education, which is mainly for the enhancement of safety consciousness, along with a model for the way of management. To achieve the purpose of the study, the construction death accidents for the recent five years were analyzed about their patterns and the scales of the accident sites to infer the main subjects and the direction of hands-on education courses. Based on the analysis results, the recombination and management plans for the construction safety hands-on education courses and the additionally required education courses were proposed.

Recent developments in technology, the use of complex composite section, such as composite truss girder is increasing. These sections, the tensile stress will be generated internal and external constraints caused by other materials. Thus, the effects of the panel point on the concrete slab was studied through the structural analysis.

In this study, trapezoidal corrugate plate were subjected to cyclic loading under displacement control. And then, results from the experiment, the behavioral characteristics and mechanism of energy dissipation were investigated. This result were different to the cumulative size of energy dissipation capacity in load-displacement curve. Based on these results, Influence of the shape is very large and it is determined the define an appropriate shape for the size.

This study aims to apply homotopy method to space truss composed of discrete members to obtain a semi-analytical solution. For the purpose of this research, a nonlinear governing equation of the structures is formulated in consideration of geometrical nonlinearity, and homotopy equation is derived. The result of carring out dynamic analysis on a simple model is compared to a numerical method of 4th order Runge-Kutta method(RK4).

The purpose of this study is to investigate the applicability of multi-stage homotopy perturbation method to shallow arches in order to obtain a semi-analytical solution. For this research purpose, a nonlinear governing equation of the arches was formulated and a homotopy equation was derived using the formulated differential equation. The result of a dynamic analysis on a symmetric mode and an asymmetric one was compared with the classical homotopy perturbation method and the 4th order Runge-Kutta method.

In this study, the shear buckling strengths of the trapezoidal and sinusoidal corrugated plates with the same self-load were compared, and their characteristics and tendencies were analyzed. In the preceding comparative study of corrugation shapes, the corrugation wave depth and the corrugation wave angle were the same. As these target, A linear buckling analysis was conducted, and the differences in the shear buckling mode and the buckling stress were analyzed.

Autogenous shrinkage isn't currently defined in Korean Highway Bridge Specifications. Accordingly, the structural analysis was carried out to reflect the contents on the autogenous shrinkage of the Eurocode(fib Bulletin 55 : Model code 2010). As a result, we examined the possible initial crack caused by the autogenous shrinkage.