• 제목/요약/키워드: Free-form design structure

검색결과 55건 처리시간 0.02초

Field measurements of wind pressure on an open roof during Typhoons HaiKui and SuLi

  • Feng, Ruoqiang;Liu, Fengcheng;Cai, Qi;Yan, Guirong;Leng, Jiabing
    • Wind and Structures
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    • 제26권1호
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    • pp.11-24
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    • 2018
  • Full-scale measurements of wind action on the open roof structure of the WuXi grand theater, which is composed of eight large-span free-form leaf-shaped space trusses with the largest span of 76.79 m, were conducted during the passage of Typhoons HaiKui and SuLi. The wind pressure field data were continuously and simultaneously monitored using a wind pressure monitoring system installed on the roof structure during the typhoons. A detailed analysis of the field data was performed to investigate the characteristics of the fluctuating wind pressure on the open roof, such as the wind pressure spectrum, spatial correlation coefficients, peak wind pressures and non-Gaussian wind pressure characteristics, under typhoon conditions. Three classical methods were used to calculate the peak factors of the wind pressure on the open roof, and the suggested design method and peak factors were given. The non-Gaussianity of the wind pressure was discussed in terms of the third and fourth statistical moments of the measured wind pressure, and the corresponding indication of the non-Gaussianity on the open roof was proposed. The result shows that there were large pulses in the time-histories of the measured wind pressure on Roof A2 in the field. The spatial correlation of the wind pressures on roof A2 between the upper surface and lower surface is very weak. When the skewness is larger than 0.3 and the kurtosis is larger than 3.7, the wind pressure time series on roof A2 can be taken as a non-Gaussian distribution, and the other series can be taken as a Gaussian distribution.

박물관의 비정형건축형태분류와 전시공간과의 융합상관성 고찰 - 네덜란드, 독일, 싱가포르를 중심으로 - (A study of convergence correlation between freeform architecture classification of museum and exhibition space -Focus on the Netherlands, Germany and Singapore-)

  • 오선애
    • 한국과학예술포럼
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    • 제37권4호
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    • pp.205-216
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    • 2019
  • 본 연구는 박물관 비정형건축형태가 늘어나고 있는 현시점에서 학술적 건축형태계보에 관한 패러다임의 변화를 초래하고 있으며 이에 따른 전시공간에 미치는 영향에 관한 유무의 논증이 요구되어 진다. 따라서 선행되어야 하는 단계로서 비정형 건축형태와 전시공간과의 상관관계를 검증하기 위해 최근 2000년 이후 다양한 박물관 설립 또는 재개관한 사례의 현황분석을 통한 실질적인 비정형 형태의 경향을 파악한다. 이에 전시공간이 관람자의 공간체험에 더욱 효과적인가를 유추하기 위해 비정형건축과 전시공간과의 관계성에 대한 결론을 도출하는데 본 연구의 목적이 있다. 연구방법 및 결과는 다음과 같다. 첫째, 박물관의 비정형건축 형태적 개념 및 건축형태의 분류에 관한 문헌조사와 선행연구의 고찰을 통해 기준을 정립하여 도입하였다. 둘째, 싱가포르, 독일, 네덜란드 등을 직접 방문하여 사례 고찰을 통해 비정형 건축형태와 전시공간의 현황과 특성을 고찰하였다. 이때 Kare Vollers의 비정형 형태기준을 차용하여 분석을 하였다. 셋째, 비정형건축형태와 전시공간과의 관계성을 증명하기 위해 Kare Vollers의 비정형 형태기준과 비정형 전시공간을 중심으로 사례별 크로스 체크하여 결과를 도출하였다. 연구 결과의 내용은 다음과 같다. 첫째, 비정형건축형태의 EX(Extruder)(angle, ortho)와 전시공간 사선형은 유의미한 상관성을 가진다. 이는 싱가포르보다는 네덜란드와 독일에서 92.3% 명확하게 검증되었다. 반면, 전시공간 곡면형은 불명확한 관계성을 보이며 싱가포르 경우 RO(Rotor), FR(Free Shaper), TW(Twister) 등을 통해 곡면형 관계성을 가진다. 둘째, 비정형 건축형태와 전시공간의 사선 및 곡면형이 복합적 형태조합을 가진다. 특히 N-02, G-02는 융합된 형태로써 EX를 기본적 가지며 부분적 다양하게 형태를 함유하여 비정형의 복잡함을 유도하였다. 이와같이 비정형 형태는 다양한 조합으로 무한정의 변형이 가능하며 이를 대응하기 위해 다각도에서의 융합적 접근이 요구된다. 차후 본 연구를 기반으로 박물관의 비정형 건축형태와 전시연출디자인과의 관계성 유무를 논증하고자 한다.

한국의 공업화건축 공법 도입활용과정 분석을 통한 3D 프린팅기술 개발 방향성 연구 (Discovering Applicable Lessons for '3D Printing R/D Project' Implementation Through Studying the Process of Adopting Overseas Industrialized Building Production Technological Knowhow in the Korean Context)

  • 이성민;이필원;조후영;이재헌
    • 한국공간구조학회논문집
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    • 제17권4호
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    • pp.59-68
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    • 2017
  • This paper aims at finding some lessons applicable to successful implementation of 'The 3D Printing R/D Project' through both examining the process of adopting overseas industrialized housing production technological knowhow by home builders during the 1970's~1980's period and thereafter until now the various efforts to adjust the technologies efficiently to the Korea's unique situation. Some meaningful lessons can be summarized as follows; I) Deep understanding of 3DP technological know-why along with its inheritance, II) Readjusting of R/D period and goals(cf. Global leader Winsun's 15 years experiment), III) Restructuring for more collaborative R/D B&E system among participating researchers IV) Fostering 3DP expert-engineers and technicians from the early stage, V) Clearing legal barriers in users' adopting 3DP methods necessary, VI) Development of appropriate building material besides concrete. Therefore, it is highly recommended that the above-mentioned 6 lessons positively accepted and applied to the Research Implementation Plan in due course, especially by KICT consortium and KAIA under the guidance of Ministry of Land, Infrastructure and Transport.

지속가능한 성장을 위한 백화점의 경쟁전략에 관한 연구 (A Study on the Competitive Strategy of Department Store for Sustainable Development)

  • 진창범;박철주;윤명길
    • 유통과학연구
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    • 제15권3호
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    • pp.73-80
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    • 2017
  • Purpose - Since Korean distribution market was opened, the domestic environment in department stores has been changed by the pattern of consumption and consumer need based on income classes. As multilateral Free Trade Agreement (FTA) accelerates opening markets, the scale of circulating capital has become bigger. Large-scale commercial facilities have developed quickly as a form of a large shopping center, thus, the matter of choice and securing market area became an important valuable in this trend. Moreover, multi-complex space has been proposed as the goal of successful business with promoting the public benefit. Research design, data, and methodology - This research studied consumer behavior using data about the life style and sales of consumers, not statistical data or survey as previous studies. This research tried to find the differentiation in complex cultural space with consumption behavior of department store. Results - As the structure of society and culture was getting diverse and complex, economic growth and development with such diversity and complexity improved consumers' quality of life. The changes of consumer life style are quite natural like human instinct. Department stores have activated retail business with the products of accumulated technology. Moreover, they have created the space of consumption and culture. Because of these social and environmental changes, department stores are being developed as Multi-functional spaces as well as sale places considering the strategies of department and the changes of consumers' purchasing behaviors. Conclusions - Urban culture complex is a landmark standing for the culture era of 21st century. It has provided an opportunity for consumers to enjoy culture, and has been an important factor to improve company images. Based on these roles and needs, expectancy effects are related with consumer preference and space preference, and the attitude toward companies. Moreover, the expectancy effects from those relationships are getting bigger and bigger. We should respect nature, a characteristic of Korean architecture, maintain visual continuity that harmonies with nature in the development of the complex space of the domestic department stores, and should take significance in the development of the complex cultural space in the direction of feeling the hierarchy of the space to obtain the visual pleasure with the artificial structure.

The Trend of Cigarette Design and Tobacco Flavor System Development

  • Wu, Jimmy Z.
    • 한국연초학회지
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    • 제24권1호
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    • pp.67-73
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    • 2002
  • In light of addressing consumer health concern, coping with anti-tobacco movement, and promoting new product, tobacco industry is actively pursuing to make a new generation of cigarettes with low tar and nicotine deliveries, and less harmful substances. Low tar and low nicotine cigarettes increases their market shares dramatically world wide, especially in KT&G, multinational tobacco companies, EU countries, even in China regulated by CNTC to set up yearly target to lower tar and nicotine deliveries. On the other hand, to design a new cigarette with reduced harmful substances begins to gain speed. The "modified Hoffmann list" publishes thirty plus substances in tobacco leaf and main smoke stream, which is the prime suspect causing health problems. Various ways and means are developed to reduce such components including new tobacco breeds, new curing method, tobacco leaf treatment before processing, selected filtration system, innovated casing system to reduce free radicals, as well as some non conventional cigarette products. In TSRC held this year, the main topic is related to reduce tobacco specific nitrosamines in tobacco leaf. The new generation of cigarette is in the horizon. It still needs a lot help to produce commercial products with satisfied taste and aroma characters. The flavor industry is not regulated by many governments demanding which ingredients might or might not be for tobacco use. However, most of the cigarette companies self impose a list of ingredients to guide flavor suppliers to design flavors. Unfortunately, the number of ingredients in those lists is getting shorter every year. It is understandable that the health is not the only reason. Some cigarette companies are playing safe to protect the company from potential lawsuit, while others are just copying from their competitors. Moreover, it is obvious that it needs more assistance from casings and flavors to design new generation of cigarettes with missing certain flavor components in tobacco leaf and main smoke stream. These flavor components are either non-existed or at lower level at new form of cured tobacco leaf or filtered in the main smoke stream along with reduced harmful substances. The use of carbon filters and other selected filtration system poses another tough task for flavor system design. Specific flavor components are missing from the smoke analysis data, which brings a notion of "carbon taste" and "dryness" of mouth feel. It is ever more demanded by cigarette industry to flavor suppliers to produce flavors as body enhancer, tobacco notes, salivating agents, harshness reducer, and various of aromatic notes provided they are safe to use. Another trend is that water based flavor or flavor with reduced ethanol as solvent is gaining popularity. It is preferred by some cigarette companies that the flavor is compounded with all natural ingredients or all ingredients should he GMO free. The new generation of cigarettes demands many ways of new thinking process. It is also vital for tobacco industry. It reflects the real needs for the consumers that the cigarette product should be safe to use as well as bearing the taste and aroma characters smokers always enjoyed. An effective tobacco flavor system is definitely a part of the equation. The global trend of tobacco industry is like trends of any other industries lead by consumer needs, benefited with new technology availability, affected by the global economy, and subjected for various rules and regulations. Anti-tobacco organizations and media exceptionally scrutinize cigarette, as a legal commercial product. Cigarette is probably the most studied commercial product for its composition, structure, deliveries, effects, as well as its new developmental trend. Therefore, any new trend of cigarette development would be within these boundaries. This paper is trying to point out what it would be like for tobacco industry in the next few yews and what concerns the tobacco industry. It focuses mostly on the efforts to produce safer cigarettes. It is such a vital task for the tobacco industry and its affiliate industries such as cigarette papers, filters, flavors, and other materials. The facts and knowledge presented in this paper might be well known for the public. Some of the comments and predictions are very much personal opinion for a further discussion.