• Structural Monitoring and Maintenance
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• 제4권4호
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• pp.351-364
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• 2017

In this study effects of various parameters like a number of bays, the stiffness of the structure along with the height of the structure was examined. The fundamental period of vibration T of the building is an important parameter for evaluation of seismic base shear. Empirical equations which are given in the Indian seismic code for the calculation of the fundamental period of a framed structure, primarily as a function of height, and do not consider the effect of number of bays and stiffness of the structure. Building periods predicted by these expressions are widely used in practice, although it has been observed that there is scope for further improvement in these equations since the height alone is inadequate to explain the period variability. The aim of this study is to find the effects of a number of bays in both the directions, the stiffness of the structure and propose a new period equation which incorporates a number of bays, plan area, stiffness along with the height of the structure.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2018년도 춘계 학술논문 발표대회
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• pp.120-121
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• 2018

The construction industry is a typical labor-intensive industry, and is heavily influenced by the employment structure. However, research on how the employment structure of construction workers affects the construction industry has not been sufficiently studied. In this study, the major factors influenced by the employment structure in the construction industry are derived and the causal relationship between the factors is illustrated. The results of this study are expected to be used as data for setting direction of policies related to the employment structure of construction workers.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2017년도 추계 학술논문 발표대회
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• pp.7-8
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• 2017

As the importance of maintenance of reinforced concrete structure recently has emerged, the attention of durability of structure has been increasing. There are many studies about durability decline especially due to the carbonation. In order to study carbonation progress after surface repair of carbonated concrete, each carbonation penetration velocity from different repair materials of concrete structure is compared through the experiment of carbonation accelerating CO₂ concentration to 5%. As carbonation infiltration progress is predicted through this study, the counterplan of service life evaluation will be prepared on selection of repair materials of concrete structure.

• 국제초고층학회논문집
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• 제10권3호
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• pp.211-218
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• 2021

A new type of earthquake resilient reinforced concrete (RC) shear wall structure, installed with replaceable coupling beams and replaceable corner components at the bottom of wall piers, is proposed in this study. At first, the mechanical behavior of replaceable components, such as combined dampers and replaceable corner component, is studied by cyclic loading tests on them. Then, cycling loading tests are conducted on one conventional coupled shear wall and one new type of coupled shear wall with replaceable components. The test results indicate that the damage of the new type of coupled shear wall concentrates on replaceable components and the left parts are well protected. Finally, a case study is introduced. The responses of one conventional frame-tube structure and one new type of structure installed with replaceable components under the wind and the earthquake are compared, which verify that the performance of new type of structure is much better than the conventional structure.

• 국제강구조저널
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• 제18권5호
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• pp.1598-1606
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• 2018

An integrated optimal structural design method for a diagrid structure and control device was developed. A multi-objective genetic algorithm was used and a 60-story diagrid building structure was developed as an example structure. Artificial wind and earthquake loads were generated to assess the wind-induced and seismic responses. A smart tuned mass damper (TMD) was used as a structural control system and an MR (magnetorheological) damper was employed to develop a smart TMD (STMD). The multi-objective genetic algorithm used five objectives including a reduction of the dynamic responses, additional stiffness and damping, mass of STMD, capacity of the MR damper for the integrated optimization of a diagrid structure and a STMD. From the proposed method, integrated optimal designs for the diagrid structure and STMD were obtained. The numerical simulation also showed that the STMD provided good control performance for reducing the wind-induced and seismic responses of a tall diagrid building structure.

• 한국지진공학회논문집
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• 제27권6호
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• pp.253-263
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• 2023

Non-structural elements, such as equipment, are typically affixed to a building's floor or ceiling and move in tandem with the structure during an earthquake. Seismic forces acting upon non-structural elements traverse the ground and the building's structure. Considering this seismic load transmission mechanism, it becomes imperative to account for the interactions between soil, structure, and equipment, establishing seismic design procedures accordingly. In this study, a Soil-Structure-Equipment Interaction (SSEI) model is developed. Through seismic response analysis using this model, how the presence or absence of SSEI impacts equipment behavior is examined. Neglecting the SSEI aspect when assessing equipment responses results in an overly conservative evaluation of its seismic response. This emphasizes the necessity of proposing an analytical model and design methodology that adequately incorporate the interaction effect. Doing so enables the calculation of rational seismic forces and facilitates the seismic design of non-structural elements.

• 한국건축시공학회지
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• 제5권1호
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• pp.97-103
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• 2005

Building costs means capital costs which include cost of land, costs of acquiring and preparing the site, construction costs, professional fees, furnishings, cost of financing the project. and cost of management required to run and maintenance the building for use. There are several phases that determine the building costs : design phase, construction phase, and operation & maintenance phase. So, the cost of work could be set against the examining the full range of complexities that a building program might contain. To solve this problem, it needs to compute building cost systematically. This is still in the development stage, awaiting the organization of rational cost data base. The method of cost saving by cost control could be constituted by detailed knowledge of building costs for all possible combinations of components and subsystems that can be assembled into integration model of cost factor on each phase of project development. The model of cost saving in each building phase is available for procedures of cost control of building systems.

• 건축역사연구
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• 제22권2호
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• pp.21-30
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• 2013

This study is related to excavation from ruins the memorial structure within the Jeongreung royal tomb. There are experimental assertion on the basis of results of the excavation, historical records. The location of the memorial structure is identified in picture of Sunwonbogam(선원보감), records of Chunkwantongho(春官通考). The memorial structure have 6 rooms where lay in 250 steps(步) from the south of Hongjeonmun gate, lotus pond lay in southeast of the structure recorded on Chunkwantongho that's guide book to manners. It's matched in the location as result of excavation. The building site consists of main house(윗채), outhouse(아래채) that's stationed in stepped. It seems that main house as the memorial structure have 6 rooms. It's used as outhouse for facilities attached to the main. It's characterized the memorial structure within the Jeongreung royal tomb that's stationed main house, outhouse in stepped it using natural ground. It's estimated that it's tried to conservation for building site, fence etc. in next several time. With regard to constructing time of the structure, traces involved to first construction is simple: 2 chimneys in flower bed, fence, a part of stone elevation, drains by using rectangular stone. It shows that the building site had been reconstructed or renovated during Gho-jong King 37s year of the Choson dynasty(A.D.1900). It seems that the memorial structure during approximately 300 years in existence from Hyeon-jong King 10s year of the Choson dynasty(A.D.1669) to the late 1960s.

• 한국안전학회지
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• 제35권4호
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• pp.32-39
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• 2020

The fire compartments with fire-resistant construction are installed in the principal structural parts of a building in order to reduce damage in the event of a building fire. As a fire may spread through a crack in the fire compartment, the firestop with secured performance is used according to the procedure, methods, and standards specified in the detailed operation guideline. According to the current detailed operation guideline, vertical members (wall penetration) and horizontal members (floor penetration) are classified into different categories respective to each other for the classification of the firestop. Therefore, an accreditation applicant must apply for the performance test for each structure even if the wall and the floor have the same structure. Also, Grade T is used for the firestop that penetrates the fire compartment. However, in the case of foreign countries, the use of Grade F for the firestop is allowed even if it penetrates the fire compartment. The result of the precedent studies also showed that there was a significantly low possibility of fire to spread even if Grade F was applied for a metallic duct that penetrated the fire compartment. In this study, the improved scheme for the classification and performance standard of firestops was presented by analyzing the results of precedent studies regarding the firestop and domestic and overseas firestop qualification systems.

• 지질공학
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• 제25권4호
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• pp.613-621
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• 2015

건축 구조물 붕괴 사고가 발생했을 때, 건물 내에 있는 사람들의 긴급구호를 위해 가장 먼저 해야 할 일은 인명이 매몰되어 있는 위치(이하 매몰 공동이라 칭함)를 찾는 일이다. 그러나 붕괴된 건물의 잔해물 내에 위치한 매몰 공동을 일반적인 탐색 방법으로 찾는 것은 불가능하다. 이에 대한 해결방법으로 본 연구에서는, 붕괴시뮬레이션을 통하여 건축 구조물 붕괴 시 지하층에 형성되는 매몰 공동을 평가하였다. 붕괴 시뮬레이션에 사용되는 매몰 공동 유형에 영향을 미치는 인자로는 건축 구조물 층고, 내부 벽체의 유/무로 설정하였다. 시뮬레이션 결과, 지하벽체가 없고 고층 건물일수록 동일한 지진하중에서 큰 면적으로 붕괴가 발생하여 매몰 공동 형성에 불리한 것으로 나타났다. 또한, 매몰 공동이 형성될 경우 건물 외벽 부근이나 코너 부분에 형성될 가능성이 높은 것으로 나타났다.