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스마트하이웨이 종방향 방호울타리안전성능 평가를 위한 충돌조건
김동성,김기동,고만기,김광주,Kim. Dong-Seong,Kim. Kee-Dong,Ko. Man-Gi,Kim. Kwang-Ju 한국방재학회 2009 한국방재학회논문집 Vol.9 No.3
충돌사고시 스마트하이웨이의 정시성과 안전성의 손상정도를 최소화 하도록 스마트하이웨이의 종방향 방호울타리 충돌조건으로 기존의 충돌조건보다 상당히 상향된 충돌조건이 결정되었다. 충돌조건은 충돌차량, 충돌속도, 충돌각도로 구성된다. 가능한 많은 승용차의 탑승자 안전을 고려할 수 있도록 충돌시 피해가 크게 나타나는 작은 차량을 충돌차량으로 선정 하였다. 가능한 많은 사고 충돌속도를 포함하도록 기존의 충돌속도보다 20% 큰 충돌속도가 결정되었다. 충돌각도는 예상되는 사고 충돌각도를 거의 모두 포함하도록 결정되었다. 기존의 국내 최고성능등급의 종방향 방호울타리에 대하여 다양한 충돌조건을 적용한 시뮬레시션을 수행하고 그 결과를 분석하여 제시된 스마트하이웨이 충돌조건이 탑승자 안전에 미치는 영향을 파악하였다. 기존의 국내 최고성능등급의 종방향 방호울타리는 제시된 스마트하이웨이 충돌조건을 만족하지 못하였다. 충돌사고시 스마트하이웨이의 정시성과 안전성의 손상정도를 최소화 하기 위해서 새로운 고성능의 종방향 방호울타리가 필요하다고 판단된다. To minimze the degree of damage for the SMART highway`s punctuality and safety after car-barrier collisions, the impact condition for longitudinal barriers of SMART highway was determined to be quite larger than the existing maximum impact condition. The impact condition consists of impact vehicles, impact velocities, and impact angles. To consider the occupant safety of passenger cars as much as possible, a small car with high risk during impact was selected as the impact vehicle for the evaluation of occupant risk. The impact velocity was determined to be 20% larger than the existing maximum impact velocity in order to include accident impact velocities as much as possible. The impact angle was determined to include most of expected accident impact angles. Computer simulations using various impact conditions were conducted for the existing domestic highest-performance medium and roadside barrier. How the suggested impact condition has an effect on the occupant safety was investigated. The existing domestic highest-performance medium and roadside barriers could not satisfy the suggested impact condition. New high-performance longitudinal barriers are required to minimize the degree of damage for the SMART highway`s punctuality and safety after car-barrier collisions.
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김동성 한국전략문제연구소 1999 전략연구 Vol.6 No.2
The national unification and national security policy of Kim Dae Jung Administration can he distinguished from previous administrations' in such two dimensions as environmental one and policy orientation. Decision-making environment reflects recent economic crisis while new policy orientation is characterized by the "Sunshine Policy", or the "Engagement Policy". The national security agenda has usually been placed on the foremost priority in the nation's contemporary history. Recent economic crisis, however, put the security interest aside, while DJ's engagement policy raises epistemological confusion on the basis of national security and unification policy. President Kim's engagement policy has a premise that attitude and behavior of North Korean leadership could he changed to ordinary one by continuous sunshining while national security policy of ROK is still based on the belief that North Korea is the main enemy that has a goal to 'communize' South Korea. The research goal of this paper is to examine the contradictory nature of present relationship between national security policy and engagement policy toward North Korea, aiming at a systemic understanding which is to be a logical basis for the prescription to solve the problems. The first area of discussion is related with controversial issues on the unification policy. The transitional situation leads us to confront with two dimensions of problem: epistemological one as well as a matter of practice. The most serious fact in epistemological dimension is the growing tendency that people begin to regard no longer the national security as being of the prime value. This problem is more or less caused by DJ's 'Sunshine Approach' and then it has made contention between 'state centered paradigm' and 'nationalistic paradigm'. At the same time, the process of national security policy decision making and execution has revealed itself far short of 'institutionalization'. The second area of discussion deals with logic of national security policy. There can be detected a number of controversies. Such questions as "national security for whom" and "which values" are among them. In addition, on the question of "sufficiency of security", "the source of threats", and "the means for security", controversial arguments make the present policy environment getting more complicated. In this context, some policy suggestions can be summarized as follows: 1) National security and unification policy should be systemized, from the decision making to execution, and all the process needs to be integrated as well Especially, national security policy requires the common belief on national goal and national ideology, then the concept of national interest and national objective needs to be shared by all the people. 2) New presidential leadership should be activated to maintain policy coherence while to control and harmonize effectively unification -security policy establishments. 3) As the hasty expectation for the South-North reconciliation and peaceful coexistence are not realistic, the top decision makers' prudence is needed in their evaluation process for the proper level of security arrangement. 4) There should be endeavors to secure sufficient deterrence capability for the short-run, while structuring solid basis for the long-run objective of peaceful coexistence. In this process, national consensus and supports are the prerequisite for attaining desirable goals.
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