• Journal of the Korea Institute of Building Construction
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• v.19 no.4
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• pp.331-339
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• 2019

Recently, expansion of urban and social infrastructures is planned to go through the transfer of military facilities or crossing the infrastructures via underground tunnels. However, when crossing facilities such as ammunition and explosive storages, a high level of safety assessment is required to prevent an accidental explosion of ground ammunition. In this study, a case study was conducted to evaluate the effect of blasting for the construction of tunnel on the ground ammunition facilities. The design section of Sinansan train operated by the Korea Railroad Authority with agreement of the Ministry of National Defense was selected. For the purpose of this study, the vibration velocity due to explosion was predicted by using GTS-NX, a numerical analysis program. Through literature review, it was confirmed that the vibration velocity of 0.2cm/sec can be a safety evaluation standard. These safety evaluation indicators and procedures used in this study can be utilized as an index of safety evaluation in the planning of social infrastructures that cross the ammunition facilities in the future.

• Proceedings of the KIEE Conference
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• 2009.07a
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• pp.383_384
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• 2009

After the 1970s, the importance of underground transmission systems increased and the construction rate of underground transmission lines also showed increasing trends each year, especially in metropolitan areas. Accordingly the social ripple effects are very large and wide when the fault occurs in underground power system, and the amount of time and money spent to restore the system also increases. So we must ensure stable operation and long-term reliability of the facilities. In Korea's case, long-term reliability tests for EHV power cables and accessories progressed poorly because equipment was not compatible for long-term reliability tests. Therefore we planned to construct a long-term reliability test field for EHV underground cables in order to ensure international quality reliability and optimal power cable operation techniques. The Gochang Underground Cable Test Field is under construction, funded by the Korean government, the govenment's union investment department, KEPCO, KERI and three private cable corporations. This project began in March, 2005 and will be completed by February, 2010. It is designed to promote joint research by incorporating several types of test equipment, construction of operating facilities, and being an internationally certified authority.

• The Korean Journal of Quaternary Research
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• v.22 no.2
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• pp.1-5
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• 2008

Some reverse fault lines pass through the alluvial fans and west hill slope of Bulguksa mountains including Mt. Toham in the directions of N-S and NW-SE. The study area is known as relatively unstable, because of active faults. Assuming the record of earthquake in the Samguksagi, the architects in the construction of the Bulguksa temple should have recognized the possibility of breakdown from the earthquakes and the need for an unique structure against at that time. Against earthquakes, Greavee technique, a stonework construction technique following woothe one and use of Chushouok (Dongtleouok or Chumchaouok) were applied for the construction of Bulguksa temple. By designing the foundation stone with hole, a structure is prevented from motiff Ction that pillarsakdcede from a foundation stone in spite of horizontal load of earthquake while woot construction isaktrong frame at earthquake. The Bulguksa-temple isausually evaluated to be a beautiful architecture from the appeaultces like the weight balltced structure with unique decoration. ampressive architectures are beautiful in balance and harmony coming from the important and specific rolls in its own way by each part of whole structure. This beauty comes from the science.

• The Journal of the Korea Contents Association
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• v.12 no.5
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• pp.470-477
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• 2012

Climate related policies have been considered due to increase of energy and fossil fuel consumption. Therefore, research has been done to reduce $CO_2$ and to implement green construction. This paper proposes green construction performance metrics for transportation facilities based on previous literature review and survey. The metrics are composed with economic, social, and environment parts and number of metrics are 14, 10, and 12 respectively. The survey was performed to evaluate relevance, clarity, timeliness, comparable, and obtainable of the proposed metrics. Then implementation strategy is also proposed for effective use.

• Journal of Environmental Impact Assessment
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• v.22 no.6
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• pp.739-744
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• 2013

Recently, railroad construction becomes an alternative considering environmental merits such as mass transportation, safety, economy and energy efficiency. Also railroad can have 3 to 4 times better in economy compared to road construction. However, long line and unavoidable sensitive areas hinders railroad construction often resulted in ecosystem degradation. This paper reviewed 27 cases of EIS submitted during 2003-2006 and reviewed major issues on Animal-Plants and Landscape. Noise-Vibration (13.5%), Water Quality (13.5%), Wastes (10.8%) appeared to be most frequent factors to supplement. Route selection in the railroad is the most sensitive issues so that public participation and hearing should be involved in the early stage of the process and social and cultural factors also must be considered to make a final decision on the railroad route location and selection.

• Journal of the Korean Society of Safety
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• v.28 no.4
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• pp.58-65
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• 2013

Transportation and further expansion of social infrastructure was needed along the development of urbanization and population concentration. To use the underground space due to the lack of availability of land, it is inevitable to intersect between present structure and tunnel during construction. Soil grouting is one of the ground improvement methods to reinforce weak soil around the underground structures by injection of grouting liquid. Some of central columns of an upper structure are damaged during injection of grouting liquid by injection pressure. To investigate and improve the stability of the tunnel, three dimensional analysis are performed with full construction stages which includes the construction of present underpass, damaging columns of the underpass, reinforcing the columns by H-pile and shear walls, and excavation and construct tunnel. The arrangement of grouting holes such as curtain and horizontal type affects largely to the stability of upper structure and horizontal arrangement diminish the shear forces which is the cause of damage of central columns. The liquid injection type of reinforcement for tunnel is not recommended while the presence of upper structure with columns. Wall type reinforcing is utilize for permant support of upper structures which is affected by grouting injection pressure. H-pile is utilize for temporary support, but not for permanent since the sharing of shear forces is not much to shear wall during tunnel construction.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2006.11a
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• pp.338-341
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• 2006

After the revision of Private Investment Law in January 2005, BTL is introduced to expand the social infrastructures as a major business procedure. Especially, the size of the public educational infrastructure ordered by each city education office is increased by 45% compared to last year, so it is major in BTL Project. However, in the process of practicing BTL Project by now, there are a lot of problems specially in the public educational infrastructure. As a result, this study gives the solutions in the process of BTL Project, the CM models to support the Education Office${\square}{\square}$job and the suggestions for the working scope of the participating construction companies.

• Journal of the Korea Safety Management & Science
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• v.17 no.4
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• pp.23-33
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• 2015

Recently, the Ministry of Employment and Labor Management is a trend to strengthen all men death rate than the accident rate. Points reduction in the accident rate change orders related to credit rating score to +2 points in his plans as part of +1 point. In addition, according to the fancy linger RISK treatment in the event of a disaster site and fiction treatment to achieve accident-free during processing the scene interspersed with equity issues have been raised. In general disaster for the problem in the first two cases occurs when abnormal process according to the disaster site manager positions dismissal policy, each division headquarters itself, interspersed disasters performance compared to processing in accordance with the refrain, processing expenses in accordance with the composition of untreated industrial accident, costs and burdens partners FTC, there is a possibility that the issues raised, such as the Ministry of Employment and Labor. In response to domestic social practices focused on the construction site practices and prevention measures should be evaluated with respect to what.

• Journal of the Korean Society for Railway
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• v.12 no.5
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• pp.800-805
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• 2009

This paper proposes the track system with twin block sleeper for a LIM type maglev railroad. Because a LIM type maglev railroad is expected to be constructed in inner city, social costs can be required under construction. Accordingly, superstructure using precast plate was adopted and twin block sleeper which can be constructed together with precast plate was developed to reduce the construction period. To examine the structural safety of the proposed track system with twin block sleeper, the finite element analyses and the laboratory experiments were performed. Also, the workability of the proposed track system was investigated through the construction simulation test and construction experience in test bed.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2014.11a
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• pp.216-217
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• 2014

Science & Technology(S&T) is the most important thing to attain competitiveness in the 21st century. Our traditional S&T policies have been forcused on hardware infra structure. We should consider software of S&T to enhance effectiveness. S&T Should be had a correct understanding method of the creation for S&T culture. It implies that S&T policy should consider nonmaterial factors which include social, environmental and culture. Under this background, The purpose of this paper is to seek new S&T policy. Therefor this paper deals with how we can prepare for the future S&T policy and classify the change of S&T policy of korea. In addition, Recent construction sector integration and fusion technologies in various areas of research and planning system is being maintained by the system. Past experience of conservative management in this emerging technology-driven technology commercialization in management of technology through the convergence of various technologies and to find synergies to secure the future of construction technology because it is a need.