Korean Journal of Construction Engineering and Management (한국건설관리학회논문집)

Korea Institute of Construction Engineering and Management (한국건설관리학회)
권호 표지
DOI QR코드

DOI QR Code

Development of Quantitative Decision Support Model for Optimal Form-Work Based on Construction Site Type

건축 공사현장 유형별 최적 거푸집 공법선정을 위한 정량적 의사결정 지원모델 개발

  • Kim, Oh-Hyung (Department of Architectural Engineering, Ajou University) ;
  • Cha, Hee-Sung (Department of Architectural Engineering, Ajou University)
  • Received : 2019.01.19
  • Accepted : 2019.05.20
  • Published : 2019.07.31
Download PDF
⟨ Previous Next ⟩

Abstract

An optimal selection of form-work is very important in the construction project in terms of construction cost and duration management. Also, it substantially affects the quality of the structure and the finishing work. However, in South Korea, the decision making on the selection of form-work has been based on the experience and intuition of construction practitioners not on the objective data or rational decision-making system. In order to solve the problem, several types of research on the selection of form-work has been processed. However, they did not consider the construction site condition, which is one of the most important factors for the selection of form-work. Thus, the objective of this study is developing the objective decision supporting system considering the site condition. This study provides the quantitative decision support model for optimal form-work based on construction site type. It is expected that the decision support model will help the practitioners decide optimal form-work based on the objective data. It will ameliorate the existing decision making process using experience and intuition. In addition, because the model considers site-conditions, it will provide more accurate and appropriate decision on the selection of an optimal form-work.

거푸집 공사는 전체 건축공사의 공사기간 및 공사비 측면에서 상당 부분을 차지하고 있으며, 구조물공사의 품질, 마감 및 설비 등 후속공사에도 직접적인 영향을 미치는 매우 중요한 공정이다. 그러나 국내 건설현장에서의 거푸집 공법선정은 객관적인 데이터를 바탕으로 하지 않고, 현장 실무자의 경험과 직관에 의존하여 이루어지는 경우가 대부분이다. 그 결과, 다수의 현장에서 공기단축, 비용절감 등의 효과가 큰 신공법을 적용하고자 할 경우, 객관적이고 합리적인 의사결정 절차의 부재로 인해 최적 공법선정 시 어려움을 겪을 뿐만 아니라, 현장의 특성을 고려하지 못한 의사결정으로 인해 공기지연, 비용증대 등의 문제가 발생하고 있는 실정이다. 이러한 문제를 해결하기 위해 거푸집 공법선정과 관련한 다양한 선행연구가 이루어졌으나 현장조건이라는 중요한 요인을 고려하지 못해 실제 현장에서 적용하여 활용하기에 다소 한계성이 있었다. 따라서 본 연구는 현장 유형별 조건을 고려한 정량적 거푸집 선정 의사결정 지원 모델 개발을 그 최종 목적으로 한다. 개발된 의사결정 지원 모델은 공사현장에서 거푸집 선정 의사결정시 정량적인 평가 데이터를 제공함으로써, 기존의 경험에 의존하여 결정하던 의사결정 방법보다 신속하고 객관적으로 최적의 거푸집 공사를 선정 할 수 있도록 도울 것으로 사료된다. 또한, 경험이 풍부하지 않은 엔지니어도 본 연구의 의사결정 지원모델을 활용하여 현장의 조건을 고려한 보다 객관적이고 합리적인 의사결정을 내릴 수 있을 것으로 기대된다.

Keywords

GGRHC4_2019_v20n4_56_f0001.png 이미지

Fig. 1. Research Flowchart

GGRHC4_2019_v20n4_56_f0002.png 이미지

Fig. 2. Conventional Form Method

GGRHC4_2019_v20n4_56_f0003.png 이미지

Fig. 3. Euro Form

GGRHC4_2019_v20n4_56_f0004.png 이미지

Fig. 4. System Form

GGRHC4_2019_v20n4_56_f0005.png 이미지

Fig. 5. Permanent Cement Mortar Form

GGRHC4_2019_v20n4_56_f0006.png 이미지

Fig. 6. Survey Results on Formwork method Selection Factors

GGRHC4_2019_v20n4_56_f0007.png 이미지

Fig. 7. AHP Decision Tree

GGRHC4_2019_v20n4_56_f0008.png 이미지

Fig. 8. Decision Support Model for Form work method based on Site type

Table 1. Analysis of advantages and disadvantages by Form

GGRHC4_2019_v20n4_56_t0001.png 이미지

Table 2. Derivation of Form selection factors

GGRHC4_2019_v20n4_56_t0002.png 이미지

Table 3. Classification by Construction site type

GGRHC4_2019_v20n4_56_t0003.png 이미지

Table 4. Summery of Expert Survey

GGRHC4_2019_v20n4_56_t0004.png 이미지

Table 5. Score by Evaluation item

GGRHC4_2019_v20n4_56_t0005.png 이미지

Table 6. Pairwise comparisons scale for form selection factors

GGRHC4_2019_v20n4_56_t0006.png 이미지

Table 7. Pairwise comparisons weight by evaluation factor for he Form selection of ‘K office building’ Construction site

GGRHC4_2019_v20n4_56_t0007.png 이미지

Table 8. ‘K office building’ Construction outline

GGRHC4_2019_v20n4_56_t0008.png 이미지

Table 9. Survey Result for Site peculiarity score

GGRHC4_2019_v20n4_56_t0009.png 이미지

Table 10. Final Score of Formwork method of ‘K office building’ construction site

GGRHC4_2019_v20n4_56_t0010.png 이미지

References

  1. Ahn, Y.S., and Lee, L.H. (1993). "Survey and Analysis on the Work Process and Working Time Characteristics of Formwork Operation." Journal of the Architectural Institute of Korea, 9(3), pp. 191-195.
  2. Hanna, A.S., Willenbrock, J.H., and Sanvido, V.E. (1992). "Knowledge Acquisition and Development for Formwork Selection System." Journal of Construction Engineering and Management , 118(1), pp. 179-198. https://doi.org/10.1061/(ASCE)0733-9364(1992)118:1(179)
  3. Jung, Y.S., Park, J.H., Kang, S.H., Oh, K.N., Kang, M.K., Kim, J.S., and Park, B.M. (2005-a). "Factors for Improving Form Works: Construction Management Approach." Journal of the Research Institute of Industrial Technology, 24, pp. 380-385.
  4. Jung, Y., Park, J.H., Kang, S., Park, P.M., and Choi, I.S. (2005-b) "Factors for Selecting Forms; A Case-Study". Proceedings of the conference of the Korea Institute of Building Construction, 5(2), pp. 111-116.
  5. Kamarthi, S.V., Sanvido, V.E., and Kumara, S.R.T. (1992). "Neuroform-Neural Network System for Vertical Formwork Selection." Journal of Computing in Civil Engineering, 6(2), pp. 178-199. https://doi.org/10.1061/(ASCE)0887-3801(1992)6:2(178)
  6. Kim, S.G., Lee, U.K., Cho, H.H., and Kang, K.I. (2006). "Decision Support System for Slab Formwork Selection of High-rise Building Construction." Journal of the Architectural Institute of Korea , 22(11), pp. 207-214.
  7. Kim, D.W., Jang, J.S., and Shin, Y.S. (2005). "Evaluation Main Effect Factors in the Duration of Form-work for Tall Building in Korea." Proceedings of the conference of Architectural Institute of Korea , 25(1), pp. 281-284.
  8. Kim, J.Y., and Kim, J.H. (2010). "A Study on Benefit/Cost Analysis of Form Work Methods for High-rise Residential Buildings." Journal of the Korea Institute of Building Construction, 10(4), pp. 49-57. https://doi.org/10.5345/JKIC.2010.10.4.049
  9. Kim, T.H., Shin, Y.S., Lee, U.K., and Kang, K.I. (2007) . "Decision Support Model using a Decision Tree for Formwork Selection in Tall Building Construcion." Journal of the Architectural Institute of Korea , 23(11), pp. 177-184.
  10. Lee, K.S. (2011). "A Selection Method of Slab-form Operations in Residential Buildings based on Delphi and Construction Simulation Techniques." Inha University Graduate School Construction Engineering Department, Incheon, Korea.
  11. Lee, K.S., Kim, S.M., Kim, Y.S., and Han, S.W. (2010). "Evaluation of Requisites for Finding Appropriate Form-work Operation in Residential Building using Delphi Technique." Proceedings of Fall Conference of the Korea Institute of Building Construction , 10(2), pp. 149-152.
  12. Satty, T.L. (1982). "Decision Making for Leaders Lifetime Learning." Belmont, CA (USA).
  13. Seo, H.M., Shin, N.R., Yeom, D.J., and Kim, Y.S. (2013). "A Decision Suport Model for the Selection of Exterior Wall Formwork in Residential-Commercial Building Construction." Journal of the Architectural Institute of Korea, 29(9), pp. 97-104.
  14. Shin, Y.S., Choi, H.B., Lee, U.K., An, S.H., and Kang, K.I. (2006). "A Study on Selection of Slab Form Work System for High-rise Building Construction." Journal of the Architectural Institute of Korea , 22(2), pp. 147-154.
  15. Shin, H.W., Kim, G.H., Kim, J.Y., and Cho, H.K. (2007). "A Research on a Comparison between the Strength and Weakness of Each Formwork Methods in the Core Wall Construction." Journal of the Korea Institute of Building Construction, 7(4), pp. 154-159.