• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2009.04a
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• pp.120-128
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• 2009

현대사회가 핵가족화 되면서 2000년에는 노인인구비율이 7%에 육박하였고, 2022년에는 고령사회의 기준이 되는 14%를 넘게 될 전망이다. 실버타운은 노인들이 안락을 위해 자녀를 벗어나 독립된 생활을 하는 건축물로서, 고령화 노인들이 크게 증가함에 따라 대형화, 고층화, 다기능화 되는 추세에 있으며, 이에 따라 화재로 인한 잠재적 위험성이 커지게 된다. 이에 본 연구에서는 성능위주설계(PBD : Performance Based Design)에 입각하여 실제 A 건물의 실버타운을 선정하고 이에 대한 화재 및 피난 시나리오를 작성 후 화재 및 피난 시뮬레이션 해석을 통해 피난성능을 평가하여 향후 개선방안을 제시하고자 한다.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2017.05a
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• pp.31-32
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• 2017

The Korea is conducted performance based on design according to fire fighting law in 2009, but it came out problems related to PBD consistently. Especially, there is no specific guideline or code related to evacuation safety verification. so it came out different results according to designer. This study is looking for each country criteria and suggest the basis data for Manual composition through comparison.

• Proceedings of the Korea Concrete Institute Conference
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• 2006.11a
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• pp.373-376
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• 2006

There are representative two performance evaluation methods for performance-based design(PBD) of reinforced concrete structures by the nonlinear static analysis, one method includes the capacity spectrum method(CSM) suggested in ATC-40(996) and the other is the displacement coefficient method(DCM) in FEMA-273(1997). The objective of this paper is to compare and verify two methods and suggest the displacement-based design for new performance evaluation of reinforced concrete structures.

• Earthquakes and Structures
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• v.11 no.6
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• pp.967-982
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• 2016

Current codes design the buildings based on life safety criteria. In a performance-based design (PBD) approach, decisions are made based on demands, such as target displacement and performance of structure in use. This type of design prevents loss of life but does not limit damages or maintain functionality. As a newly developed method, resilience-based design (RBD) aims to maintain functionality of buildings and provide liveable conditions after strong ground movement. In this paper, the seismic performance of plain and strengthened RC frames (an eight-story and two low-rise) is evaluated. In order to evaluate earthquake performance of the frames, the performance points of the frames are calculated by the capacity spectrum method (CSM) of ATC-40. This method estimates earthquake-induced deformation of an inelastic system using a reduced response spectrum. Finally, the seismic performances of the frames are evaluated and the results are compared with a resilience-based design criterion.

• Fire Science and Engineering
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• v.27 no.4
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• pp.27-34
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• 2013

The high prediction performance of fire detector models is essentially needed to assure the reliability of fire and evacuation modeling in the process of PBD (Performance Based fire safety Design). The main objective of the present study is to measure input information in order to predict the accurate activation time of smoke detector into a Large Eddy Simulation (LES) fire model such as FDS (Fire Dynamics Simulator). To end this, FDE (Fire Detector Evaluator) which can measure the device properties of detector was developed, and the input information of Heskestad and Cleary's models was measured for a ionization smoke detector. In addition, the activation times of smoke detectors predicted using default values into FDS and measured values in the present study were systematically compared. As a result, the device properties of smoke detector examined in the present study showed a significant difference compared to the default values used into FDS, which resulted in the considerable difference of up to 15 minutes or more in terms of the activation time of smoke detector. The database (DB) on device properties of various smoke and heat detectors will be built to improve the reliability of PBD in future studies.

• International Journal of High-Rise Buildings
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• v.5 no.1
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• pp.1-12
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• 2016

The 1100 foot [335 m] tall Wilshire Grand Center tower under construction in Los Angeles illustrates many key outrigger issues. The tower has a long, narrow floor plan and slender central core. Outrigger braces at three groups of levels in the tower help provide for occupant comfort during windy conditions as well as safety during earthquakes. Because outrigger systems are outside the scope of prescriptive code provisions, Performance Based Design (PBD) using Nonlinear Response History Analysis (NRHA) demonstrated acceptability to the Los Angeles building department and its peer review panel. Buckling Restrained Brace (BRB) diagonals are used at all outrigger levels to provide stable cyclic nonlinear behavior and to limit forces generated at columns, connections and core walls. Each diagonal at the lowest set of outriggers includes four individual BRBs to provide exceptional capacities. The middle outriggers have an unusual 'X-braced Vierendeel' configuration to provide clear hotel corridors. The top outriggers are pre-loaded by jacks to address long-term differential shortening between the concrete core and concrete-filled steel perimeter box columns. The outrigger connection details are complex in order to handle large forces and deformations, but were developed with contractor input to enable practical construction.

• Fire Science and Engineering
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• v.33 no.3
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• pp.112-120
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• 2019

To improve the reliability of a safety assessment using a fire simulation in domestic PBD, the evaluation method of ASET considering the uncertainties of the input parameters and numerical model of fire simulation was carried out. To this end, a cinema and officetel were selected as the representative fire spaces. The main results were as follows. Considering the uncertainty of the heat release rate, which has the greatest effect on the major physical quantities presented in the life safety standard, significant changes in temperature, CO, and visibility occurred. In addition, when the bias factors reflecting the uncertainty of the numerical model were applied, there were no significant changes in temperature and CO concentration. On the other hand, the visibility was increased considerably due to the low prediction performance of smoke concentration in FDS. Finally, the reason why the physical quantity determining the ASET in domestic PBD is mainly visibility was discussed, and the application of uncertainty of the input parameters and numerical model in a fire simulation was suggested for an accurate ASET evaluation.

• Magazine of the Korea Concrete Institute
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• v.26 no.6
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• pp.30-34
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• 2014

• Journal of the Korea institute for structural maintenance and inspection
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• v.15 no.4
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• pp.99-106
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• 2011

This study performed research for improvement on basic concept of PBD applying suitable design method before and after LB-DECK composition. According to study, in this case, before composition, it can reduce minuteness cracks by increasing bending tensile strength utilizing polymer concrete, can expect sensuous effect, improve durability as to low permeability, and was evaluated that can reduce covering depth according as it. Also, because LB-DECK baseplate that apply the empirical design method composite is superior load resistance ability than general baseplate, safety is increased, it is expected to secure constructibility and economic performance at the same time because reinforcement arrangement method and reinforcement amount are fixed even if span effective span is increased at ultimate strength design method application.

• Earthquakes and Structures
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• v.8 no.1
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• pp.77-100
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• 2015

Multiple tuned mass dampers (MTMDs) tuned to various frequencies have been shown to efficiently control the seismic response of structures where multiple modes are dominant. One example is irregular structures that are found more vulnerable than their symmetric counterparts. With the technology of MTMDs available, design and optimal design methodologies are required for application. Such a methodology, in the form of an analysis/redesign (A/R) scheme, has been previously presented by the authors while limiting responses of interest to allowable values, i.e., performance-based design (PBD). In this paper, the A/R procedure is modified based on formal optimality criteria, making it more cost efficient, as well as more computationally efficient. It is shown that by using the methodology presented herein, a desired performance level is successfully targeted by adding near-optimal amounts of mass at various locations and tuning the TMDs to dampen several of the structure's frequencies. This is done using analysis tools only.