• Title/Summary/Keyword: 건축물 해체

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Development of Linear Shaped Charges for Explosive Jet Cutting and Application Plan (폭발절단용 성형폭약의 국산화 개발 현황 및 활용화 방안)

  • 신용길;이병일;조영곤;이익주
    • Explosives and Blasting
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    • v.20 no.3
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    • pp.15-23
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    • 2002
  • 철골구조물은 일반 철근 콘크리트 구조와는 달리 단순히 천공을 하고 폭약을 장약하여 기폭시키는 방법으로는 해체 또는 절단이 어렵다. 국내의 경우 최근 철골 구조로 건축되는 강교와 건축물 등이 증가하는 추세이며, 내구연한이 다하거나 구조적 결함으로 인하여 해체 대상으로 지목되는 철골구조물에 대해서는 특수한 형태의 해체 기술을 필요로 한다. 1997년 이후 국내에 철골구조물의 발파해체를 위하여 성형폭약에 의한 폭발절단기술에 관한 연구가 소개된 이후로 폭발절단력에 미치는 성형폭약의 라이너(Liner), 폭약의 종류, 형상 및 이격거리(Stand-off distance) 등에 대한 연구가 활발히 이루어졌으며, 또한 국산화를 위한 기초적인 설계변수에 관한 연구 등이 보고 된 바 있다. 현재 성형폭약의 사용범위가 철골구조물의 절단해체 뿐만 아니라 긴급구조를 필요로 하는 특수한 용도나 군사폭약의 해체, 항공산업 등 그 적용범위가 확대되고 있는 실정이다. 그러나, 성형폭약의 성능 향상 및 품질 보증을 위한 체계적인 설계 변수의 검토 설정에 관한 연구와 산업f'의 적용을 위한 구체적인 결과는 보고 된 바 없는 실정이다. 그래서, 보다 체계적인 현장 적용 시험 등에 대한 연구가 효율적으로 진행될 경우 국내 고유 기술에 의한 철구조물의 절단 및 해체공법에 획기적인 변화를 가져올 수 있을 것으로 기대된다. 따라서, 본 연구에서는 국산화되어 현장에 적용되고 있는 성형폭약 HAKO 제품을 기준으로 이미 국내에 알려진 성형폭약과 비교 분석하였다. 또한 보다 효율적인 산업계의 적용을 위한 각종 시험 결과 및 국산화 현황과 향후 활용 방안 등에 대하여 소개하고자 한다.

Frank Gehry's Jewely Design Reflecting Architectural Design Characteristics (프랭크 게리의 악세사리 디자인에 나타나는 건축디자인 특성)

  • Oh, Hyen-Soo;Lee, Hee-Won
    • Proceedings of the KAIS Fall Conference
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    • 2012.05b
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    • pp.603-606
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    • 2012
  • 본 연구에는 해체주의로 일컬어지는 전통적 디자인의 원론적 틀에서 벗어나 보이는 프랭크 게리의 건축작품들의 전반적인 특성을 형태 구성에서 나타나는 형태론적 측면에서 파악하고, 건축물의 형태 디자인 요소와 티파니 주얼리에서 그가 선보였던 게리 에디션을 통해 그의 주얼리 디자인에 반영된 건축디자인의 특성을 파악하고자한다. 자신만의 독특한 건축디자인 특성을 건축 이외의 디자인 분야에 표현한 게리를 통하여, 건축가의 디자인이 건축 이외의 많은 것에 영향을 줄 수 있다는 가능성을 파악할 수 있었다.

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Wood Quality and Strength Properties of Old Structural Members (목조건축 해체 고목재의 재질특성 및 강도성능)

  • Hwang, Kweonhwan;Park, Byeongsu;Park, Moon-Jae
    • Journal of the Korean Wood Science and Technology
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    • v.36 no.1
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    • pp.36-44
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    • 2008
  • It is necessary to assess wood quality and strength of the clear specimens from used members in old wooden structures for the reuse of old members on the same structure or a new structure. Wood species classification by microscope observation of each wood member that was used in truss cord and temple, and several physical and strength tests by the specification of present KS standards were conducted to compare with some references. From the comparison of strengths with references, Korean larch gives relatively better wood quality and mechanical properties than other wood species. No significant deterioration of cell wall was found by microscopic observation for the sound wood part that was selected visually. Tensile specimens with 3 mm in thickness on the middle span showed greater strength than 5 mm thick specimens, which explains that dimension of tensile specimen should be examined for evaluating precise tensile strength properties. Other tests, compression, shear, and bending, are adoptable for each strength properties. Test methods for the evaluation of basic strengths and fastener connections for old wood species should be further examined.

Application of Accelerometer for Quantitative Mechanical Evaluation of Assembly and Disassembly Properties of Building (건축물 조립성 및 분해성의 역학적 정량평가를 위한 가속도계의 적용성 분석)

  • Ahn, Jaecheol
    • Journal of the Korea Institute of Building Construction
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    • v.15 no.1
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    • pp.107-113
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    • 2015
  • Recently mechanization construction methods are developed rapidly in the field of construction processing. The construction industry is one of the sector that still requires a lot of manual labor of the entire industry. There are still various kinds of work done by human labors, especially in the disassembling and separation of materials for recycling. However, database of relevant statistics including estimating standards are difficult to analyze by actual human workload, and furthermore the disassembling processes are being analyzed by qualitative assessment. This study attempted to introduce the accelerometer for the quantitative evaluation of human workload in the construction field. Still, it is possible to calculate the amount of energy which is required for the assembling and disassembling of nail and screw through three-dimensional accelerometer.

Estimation Method of the Amount of Demolition Waste through Automated Calculation of Volumetric Spaces using Drones (드론 활용 체적산출 자동화를 통한 해체 폐기물량 예측기법에 관한 연구)

  • Ryu, Jung-Rim;Kim, Hye-Ri;Park, Won-Jun
    • Journal of the Korea Institute of Building Construction
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    • v.22 no.6
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    • pp.681-688
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    • 2022
  • In this study, the process of drone photography, automatic volume calculation, total floor area conversion, and waste calculation was constructed as a QGIS plug-in to predict the demolition waste (DW) generated in an aged area where drawing information or building information is uncertain. Through a case study, the high consistency between the automatically calculated volume using the drone and the BIM volume based on the field measurement was confirmed. Field application was carried out for the planned demolition work site, and the consistency between the drone-based volume and the actual measurement-BIM-based volume was reconfirmed. The waste generation unit was applied and the amount of DW was calculated by setting the floor height and building type, and the entire process was completed within 6 hours. Although the difference between building information and building objects through drones occurred according to the setting of temporary structures, loads, and floor heights, it was found that the actual amount of DW was generated more than the initial estimate. It is expected that measures to improve the accuracy of volume and floor area conversion will be required through case studies in the future.

Optimization Model of Table Form dismantlement Sequence for Reducing Formwork Duration in Tall Building Construction (초고층 거푸집 공사 공기 단축을 위한 테이블폼 해체 순서 최적화 모델)

  • Nam, Chulu;Kwon, Jaebeom;Lim, Hyunsu;Cho, Hunhee;Kang, Kyung-In
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2015.11a
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    • pp.196-197
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    • 2015
  • In tall building construction, time for transporting form affects formwork duration as plan size has become larger and quantity of inputted form has been increased. Thus, necessity of systematic dismantlement sequence of form has been increased to reduce the duration of formwork. Tabu search has been efficiently applied to solve problem of combinatorial optimization by using tabu list which can improve combination values. Therefore, this study proposes optimization model of dismantlement sequence of table form which has been preferred in tall building construction, to reduce the formwork duration by minimizing time for transporting form.

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An Experimental Study on Confined Steel Structure Blasting Demolition (폭약을 이용한 밀폐압력용기 해체에 관한 기초적 실험연구)

  • Lee, Ha-Young;Kim, Yong-Kyun;Yang, Kuk-Jung;Hur, Won-Ho;Kang, Dae-Woo
    • Explosives and Blasting
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    • v.30 no.2
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    • pp.43-51
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    • 2012
  • The Demolition blasting has been applied for buildings and structures so far. In this study, however, a confined vessel blasting filled with water has been focused. A small amount of explosives were placed in a sealed vessel with water, perfect elastic body, supposed as a relay agent in it, and the blasting aspect was observed. Blasting pressure was standardized by Abel's equation of state. In result, if there was a relay agent in it, the pressure vessel was torn apart with smaller power than its tensile strength. If there was not, it needed 7.1~8.5 times as much power as the previous one, and the blasting pressure had not also affected the demolition and it had gone or vanished until it reached a certain point, In terms of pressure vessel made by steel, the elastic-plastic failure was took a place, and the first yield point happened along the welded area as a form of heating plastic failure we thought.

The Comparison and Analysis of Dust, Soil and Water Pollution Through the Case Study of Demolition Sites (해체공사의 분진발생과 토양, 수질 오염의 특성)

  • Lee, Kyoung-Hee;Kim, Hyo-Jin;Park, Jae-Han;Chu, Kyoung-Hoon;Ko, Kwang-Baik
    • Korean Journal of Construction Engineering and Management
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    • v.11 no.4
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    • pp.100-108
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    • 2010
  • With the rapid economic growth and improvement of living conditions in Korea, rebuilding and redevelopment of existing houses has also been rapidly increasing. As a result, considerable construction and demolition wastes have been produced. Demolition wastes, however, must be given special attention because of the various harmful substances in them. The construction waste has been produced most at demolition phase, but the research into that area has not being to make nearly within the country. The aim of this study was to evaluate and compare the contamination figures of the heavy metals and toxin organic substances in the soil and water caused by flying ashes generated and eventually accumulated in building demolition works. AB a result. most of the pollution levels were not worrisome, but some were increased after the demolition with the water used to prevent the dusty air and in the target buildings. However in the vicinity of the demolition sites with explosives there was no report of study in water and soil pollutions, so to minimize pollutions we need to make plans to select the harmful substance in the first place. Thus, this research is expected to be the important materials for future research into the construction waste area.

A Study on the Constructability of Modular Steel Frame (해체.조립식 모듈러 철골조 건물의 시공성에 관한 연구)

  • Zheng, Sheng-Lin;Kang, Joo-Won;Park, Sung-Moo
    • Journal of Korean Association for Spatial Structures
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    • v.8 no.4
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    • pp.65-71
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    • 2008
  • The object of this paper is to evaluate on constructability of modular steel frame with the hollow structural steel section to LEB C-shape. A modular building is built with factory-manufacture and site-construction. The advantage of a Modular building presents that enhanced building quality, shortened construction period and easy at an expansion and enlargement for buildings but also has demerits such as size restriction of the modular units according to the Road Traffic Law and Inflexibility of the unit composition. So in this study we use light-weighted structure members with bolted joint for easy Knock-down and traffic, also we evaluated the constructability of this bolted joints type modular buildings.

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Analysis regarding the Environmental Impact of the Life Cycle of Housing Complexes in Korea (국내 주거 단지에 대한 전과정 환경영향 분석)

  • Choi, Doo-Sung;Jeon, Hung-Chan;Cho, Kyun-Hyong
    • Korean Journal of Construction Engineering and Management
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    • v.15 no.5
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    • pp.13-21
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    • 2014
  • This study on condominium complex will adopt the quantitative assessment of the influence on the environment throughout the entire life cycle of buildings. This paper applies input-out analysis in order to analyse embodied energy regarding input of materials at material production phase. Also, it calculates environment load at use and demolition and destruction Phases of buildings as analysing energy consumption. The study categorises environment load as six impact categories and undertakes environmental impact evaluation. The consequence shows that the environment load of multi-unit dwelling takes up 88.2% out of the entire environment load of condominium complex. Also, as a result of analyzing the environmental impact of the life cycle of condominium buildings, it was found that such environmental impact comprised of about 11.96% of all industries in Korea that had an environmental impact.