• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2011.11a
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• pp.262-265
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• 2011

초고층 복합건물의 비상시에 대한 인적 피해 및 물적 피해를 최소화하기 위해 화재 위험성을 정량적으로 평가할 수 있는 기술이 요구된다. 본 연구에서는 비상시 초고층 건물의 화재 발생 및 발달에 대한 충분한 화재 안전성을 확보할 수 있도록 사전에 평가할 수 있는 기술을 개발하고자 한다. 특히 국내에서는 고층 건물에 대한 화재 시나리오가 명확히 제시된 바가 없기 때문에 정량적 화재 위험성 평가를 위한 신뢰할 수 있는 시나리오를 개발하고 이를 분류할 수 있는 하부모델을 도출하였다. 따라서 시간에 따른 화재의 발달과 연소 확대에 관한 각 하부모델의 적절한 시나리오 선택 기법을 제시하고자 한다.

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2010.04a
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• pp.149-154
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• 2010

건축기술의 눈부신 발전과 경제적 가치추구 등에 따른 국가 사회적 수요로 인하여 초고층 건축물의 건설물량은 이들 건축물에 대한 효과적인 피난안전대책을 정립하기도 전에 급속히 증가하는 추세이다. 우리나라는 2009년 7월 16일 재정된 건축법 시행령을 통하여 층수가 50층 이상이거나 높이가 200미터 이상인 건축물을 '초고층 건축물'로 규정하고, 이러한 건축물의 피난안전을 위하여 지상층으로부터 최대 30개 층마다 설치하는 대피공간을 '피난안전구역'으로 정의하였다. 이후 2010년 2월 18일 개정령에서는 초고층 건축물의 피난안전구역을 건축물의 '피난층'으로 인정하기에 이르렀다. 그러나 피난대상인원 등에 따른 대피공간의 면적이나 구조 등 내부시설에 대한 설치기준이 없어 피난안전구역으로서의 충분한 신뢰성을 확보하지 못하고 있어 이에 대한 심층적 연구와 기준의 개선이 필요한 실정이다.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2003.05a
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• pp.147-152
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• 2003

Passage of time axial shortening in the cores and columns of tall concrete buildings requires special attention to ensure proper behavior for strength of the structure and the nonstructural element. The effects of column shortening, both elastic and inelastic, take on added significance and need special consideration in design and construction with increased height of structures. In this paper, the compensation method of column shortening for reinforced concrete structure are introduced. It could be concluded that the survey is a significant factor for the compensation instance of column shortening.

• KIEAE Journal
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• v.8 no.1
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• pp.105-110
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• 2008

Most high rise buildings have been constructed with steel structure systems with metal deck floors and concrete topping. Since the mass of the metal deck floor system is relatively thinner than that of the concrete floor system and due to the larger span compared to other floor systems, vibration serviceability problems are frequently occurred. Most of vibration problems are induced by the movement of humans. A walking load function was proposed for the better estimation of composite deck floor vibration based on site measurements in this paper.

• Earthquakes and Structures
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• v.10 no.6
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• pp.1391-1404
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• 2016

Peninsular Malaysia lying on the stable Sunda Plate has traditionally been considered safe with low to moderate seismicity. However, far field Sumatran mega-earthquakes have been shown to be capable of triggering ground motions felt in high rise structures in the major Malaysian cities while seismic impact from local earthquakes of moment magnitude 3.8 have reportedly induced nominal structural damages to nearby buildings. This paper presents an overview of the recent seismic activities in and around Peninsular Malaysia with reference to prominent earthquakes generated by far field interplate and local intraplate sources. Records of ground motion data and seismic hazard assessment (SHA) results available in the literature have been analyzed and discussed. The peak ground acceleration (PGA) values from historical records for few local intraplate events were observed to be higher than those for the events from Sumatran Subduction Zone. This clearly points to the need for a detailed and comprehensive SHA incorporating both far field and local sources. Such an analysis would contribute the knowledge required for secure and reliable infrastructure design and safeguard the Malaysian people and economy.

• Proceedings of the SAREK Conference
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• 2005.11a
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• pp.45-50
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• 2005

The supply outdoor airflow rates are calculated and analyzed using a multizone network model in a high-rise residential apartment. The system parameters include parameters related to weather conditions, building conditions, operation conditions, and facility conditions. Simulations are conducted according to the method of design of experiments and analysis of variance is conducted to investigate the effects of parameters on ventilation rate. A correlation equation is derived to predict ventilation rates of the building depending on the various parameters.

• Proceedings of the Computational Structural Engineering Institute Conference
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• 1999.10a
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• pp.370-377
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• 1999

Differential shortenings of columns in a highrise building must be considered in the design process to avoid unexpected damages in structural and nonstructural elements. While research activity has been reported in the literature on the development of estimation algorithms or prediction procedures of elastic and inelastic column shortenings, no algorithms or methods for compensation of differential shortenings. In this paper a compensation method for differential column shortenings in a high-rise is formulated as an optimization problem The simulated annealing algorithm is used to find optimal solutions. The performance of the proposed method is presented by using the well known examples developed by PCA.

• Computational Structural Engineering
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• v.4 no.4
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• pp.10-13
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• 1991

현대의 건물은 초고층화 되어가기 때문에 바람이나 지진에 의한 건물의 과다진동이 일어나며 이것은 기초분리(base isolation) 방법 또는 제진장치를 설치함으로써 해결할 수가 있다. 기초분리 방법은 지진 다발 지역에서 지진에 의한 피해를 감소시키기 위하여 주로 이용되며 제진장치는 지진은 물론 바람을 받는 고층건물, 타워, 다리 등의 대형 구조물의 제진에 사용이 되며 병원, 컴퓨터센터, 그리고 반도체 공장 등 정밀한 작업이 이루어지는 곳에서의 국부적인 제진에 적용이 되고 있다. 제진장치는 수동제진장치와 능동제진장치로 대별이 되며 원리는 질량을 이용한 건물의 감쇠력을 증대시키는 데 있다. 능동제진장치를 이용한 시스템은 과다한 설치비와 운영비 뿐만 아니라 강한 바람이나 지진이 왔을 때 전력 중단이 되어 작동이 되지 않을 때가 있으므로 현재로서는 수동제진장치가 많이 이용이 되고 있다. 따라서 현재 강한 바람이나 지진에 대한 건물전체의 거동은 수동제진장치에 의하여 대처하고 약한 바람과 지진 등에 대한 국부적인 제진에는 능동제진장치를 이용하는 복합제진시스템(hybrid vibration control system)이 제시되고 있다.

• International Journal of High-Rise Buildings
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• v.5 no.2
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• pp.105-115
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• 2016

In the process of exploring sustainable development, major cities in China are expanding metro systems as a strategy to reduce the negative environmental and social consequences of fast-paced motorization. A metro station is not only a transportation node, but also a place where diverse activities can be performed. Therefore, the realization of the spatial potential for human interaction is the essence of the strategy for integrated development in metro station areas. For this paper, 10 well-developed metro stations in Central Shanghai were selected to investigate the correlation between accessibility and spatial performance in station areas. The spatial performance in station areas is significantly affected by metro configuration. However, both vehicle and pedestrian accessibility show weak influence on spatial performance. A synergistic model was then developed to provide quantitative support for transit-oriented development in metro station areas.

• International Journal of High-Rise Buildings
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• v.4 no.2
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• pp.153-160
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• 2015

As the predominant mode of vertical urban development in China, mixed-use complexes provide the optimal case for the research of sustainable and vertical urbanism. This paper reviews three typical mixed-use complexes with various vertical space systems in Shanghai via the combination of field observation, questionnaires and software analysis. It then proceeds to determine which vertical space system is most effective for encouraging sustainable vertical urban development from the perspective of spatial efficiency. Finally, it concludes with an evaluation of the relative capabilities of the design features of a mixed-use complex: to create external dimensional-connections, to create multiple internal connections, and to organize overall composite functions.