• Title, Summary, Keyword: Construction Method

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A Study on the Selection of Construction Method by Decision Making Method (의사결정기법을 통한 건축공법선정에 관한 연구)

  • Yang, Keek-Young;Yoon, Yer-Wan
    • Journal of the Korea Institute of Building Construction
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    • v.2 no.1
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    • pp.147-154
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    • 2002
  • In the Past, The selection of individual method of construction was done by head of construction site or an experienced person very frequently. By doing this, The wrong selection of construction method without exact adjudication of construction site situation lead to increasing of cost and extension of construction term. Finally it will effect all over the construction process. Especially, In case of underground construction in the beginning, there are a lot of a variable factor and it also effect on the entire construction process and it need very careful process. The purpose of this study is to present the best suitable methodology for selection of construction method by considering potential risk of construction method and variables together with external condition for underground construction. The purpose of this study Is to select the most suitable construction method by analysing potential conditions(construction site situation and client request in designing ) To do this, We prepared arrangement rule to arrange the conditions for construction method. And thin make checklist of the analyzing construction method. Though above process, To expect the risk of individual construction method using above risk checklist and using Analytic Hierarchy process among Multiple-Criteria Decision making, the professional opinions is to be adapted. By doing this, it can lead and select the most suitable construction method considering the data which get from risk density test.

A Study on the Selection of Underground Construction Method by Risk Analysis (리스크 분석을 통한 지하 구조체 공법 선정에 관한 연구)

  • 윤여완;양극영;홍성휘
    • Proceedings of the Korean Institute of Building Construction Conference
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    • pp.99-117
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    • 2001
  • In the past, The selection of individual method of construction was done by head of construction site or an experienced person very frequently. By doing this, The wrong selection of construction method without exact adjudication of construction site situation lead to increasing of cost and extension of construction term. Finally it will effect all over the construction process. Especially, In case of Underground construction in the beginning, there are a lot of a variable factor and it also effect on the entire construction process and it need rely careful process. The purpose of this study is to present the best suitable methodology fer selection of construction method by considering potential risk of construction method and variables together with external condition for Underground construction. The purpose of this study is to select the most suitable construction method by analysing potential conditions(Construction site situation and Client. Request in designing) To do this, We prepared arrangement rule to arrangement conditions for construction method. And then make Checklist the analyzing construction method. Though above process, To expect the risk of individual construction method using above risk checklist and using Analytic Hierarchy Process among Multiple-Criteria Decision Making, the professional opinions is to be adapted. By doing this, It can lead and select the most suitable considering method considering the data which get from risk density test.

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A Study on the Construction Process Management of the Top-Down Construction Method (Top-Down 공사의 공정관리 방법 연구)

  • Kang Hyun-Jung;Rhim Hong-Chul;Lee Ghang;Yun Dae-Jung;Kim Sang-Il
    • Proceedings of the Korean Institute of Building Construction Conference
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    • pp.133-136
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    • 2006
  • The top-down construction method is an excavation and substructure construction method by excavating earth and building slabs from the ground level to the bottom of a building. The top-down method can be categorized into several types by its process and other technical details. Some of commonly used top-down methods in Korea today are S.O.G., N.S.T.D., and S.P.S. Among these, one method is chosen depending on construction field conditions, cost, construction time and so on. This study explores several factors that may affect the selection of a top-down method. This paper reports preliminary survey results with 54 top-down construction experts and comparison results of 5 top-down construction sites.

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A Study on the Sub-elements of the Top-down Construction Method Selection Model using Weighting Factor in Downtown Area (가중치 분석을 통한 도심지 Top-Down 공사에서의 공법요소 선정 모델 개발에 관한 연구)

  • Park, Chang-Wook;Moon, Seung-Yun;Yun, Seok-Heon
    • Journal of the Korea Institute of Building Construction
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    • v.8 no.4
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    • pp.61-69
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    • 2008
  • The size of the construction projects become huge and complex, and the depth of excavation for the underground structures become deeper. Also the working area is not enough for loading materials and temporary facilities. This is the most case of recent construction projects in downtown area. Top-down is the most useful method for this kind of construction projects. Top-down construction method consists of supporting method, retaining wall type, foundation type and construction direction such as up-down or up-up. construction managers have to select sub-elements for top-down construction method in planning phase. This study is to suggest the sub-elements selection model for the top-down construction method, and the case study is conducted for evaluating this model.

Design and Construction Problems of Semi-Shield Method (SEMI-SHIELD 공법의 설계 및 시공상 문제점)

  • Kim, Jong-In;Jung, Sung-Nam;Park, Yeong-Geon
    • Proceedings of the Korean Geotechical Society Conference
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    • pp.1275-1282
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    • 2009
  • The tunnel excavations are used for construction of common utility tunnel, electric tunnel, communication line tunnel, water supply and public sewerage pile line in urban area. The trench cut methods were mainly used in the past, but now, tunneling method is more being used. The tunnel excavation method like as NATM, Messer-Shield, Semi-Shield Methods are being applied to small section tunnel in Korea. The actual construction results of seme-shield method are increasing due to simplified construction process and reduced noise and vibration. And also this method is being used frequently in waterway tunnel and construction of prevention flooding recently. The seme-shield method design guideline is absence except for electric line tunnel construction in Korea, because of the semi-shield method was developed in Europe and Japan. In the prescriptive design, engineer's subjects are tending to intervene, because of absence of standard and specification for details. Therefore, Design and Construction Problems of Semi-Shield Method were described and construction trouble was introduced for exam. These problem and construction troubles have to be examined thoroughly in advance.

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Research on Efficient Applicability Through Review on Standard for Selection of Construction Method for Railway Underground Crossing Transit (철도지하횡단 통과 공법 선정기준에 관한 검토를 통해 효율적인 적용성에 대한 연구)

  • Hwang, Young-Ho;Shon, Jung-Chul;Baek, Jong-Myeong
    • Proceedings of the KSR Conference
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    • pp.595-600
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    • 2007
  • Greater expansion and more frequent operation of the railroad transportation system anticipated due to its characteristics including low cost, safety and mass transportation. Recently, effects on the railway structures due to expansion of newly constructed road, construction of subway, city gas pipeline, communication network, electric power network and construction of other railway underground crossing in accordance with urban planning and organization has influenced safe operation of trains. Accordingly, standard for selection of construction method that will enable construction of more economical and rational subway underground crossing structures by preventing problems occurring at the time of above construction works and accidents in safe operation of trains due to construction in advance is definitively necessary. Although there are numerous construction methods that can be applied at the time of construction of railway underground crossing, there are much difficulties in selection of appropriate construction method that considers characteristics of each construction method on non-excavation type construction method, train operation plan of number of operational routes and on-site circumstances. Therefore, this research aims to present rational standard for selection of construction method for such, and standard for slowdown speed and interception of train when passing the areas of slowdown in sectors under construction.

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A Study on the Risk Analysis of Construction Method (건축공법 내부 리스크 분석에 관한 연구)

  • 윤여완;양극영
    • Proceedings of the Korean Institute of Building Construction Conference
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    • pp.117-121
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    • 2002
  • The purpose of this study was to Identification the Risk of construction method to protect and reduce the risk of construction period. For this study we are using the pre and during construction period Inspection list. The inspection list was used by construction company for check a flaw of Construction field. So we rearrange the individual item of inspection list to match the Risk factor. This inspection list usually has the difference of importance because this list is not made by Method which is not focused on Method. Therefore, To find the difference of these importance, We surveyed this matter by doing interview of specialist group. To find the application of field and the possibility of measurement of Risk status, We tested Risk occurring frequency and it's strength by checking the level of Risk. The results of this study were as follows; Each Method Check List made out through the rearrangement of Construction Inspection list which used in construction company. To solve and compensate the matter which happened by changing the each Method Check List to each General Inspection List, we added the each Method Check List by checking the importance of check list of each process. By doing this, The Check List for finding Risk level of Method was created by using the check list of each Method.

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A Study on the Risk Analysis of Construction Method (건축공법 내부 리스크 분석에 관한 연구)

  • Yoon, Yer-Wan;Yang, Keek-Young
    • Journal of the Korea Institute of Building Construction
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    • v.2 no.4
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    • pp.131-135
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    • 2002
  • The purpose of this study was to Identification the Risk of construction method to protect and reduce the risk of construction period. For this study we are using the pre and during construction period Inspection list. The inspection list was used by construction company for check a flaw of Construction field. So we rearrange the individual item of inspection list to match the Risk factor. This inspection list usually has the difference of importance because this list is not made by Method which is not focused on Method. Therefore, To find the difference of these importance, We surveyed this matter by doing interview of specialist group. To find the application of field and the possibility of measurement of Risk status, We tested Risk occurring frequency and it's strength by checking the level of Risk. The results of this study were as follows; Each Method Check List made out through the rearrangement of Construction Inspection list which used in construction company. To solve and compensate the matter which happened by changing the each Method Check List to each General Inspection List, we added the each Method Check List by checking the importance of check list of each process. By doing this, The Check List for finding Risk level of Method was created by using the check list of each Method.

The Analysis of Ground Behavior on the Crossing Construction Under Railroad Using Field Measurement (철도지하횡단공사시 현장계측을 통한 지반거동 분석)

  • 엄기영;신민호;김지훈
    • Proceedings of the KSR Conference
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    • pp.546-551
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    • 2001
  • We analysed the affection to subgrade that railway underground crossing construction make with studying displacement of subgrade of each construction methods and processing of Front jacking method and Pipe roof method with already-measured data(during the construction) and additionally-measured field test data in railway underground crossing construction. We measured vertical and horizontal displacement at two construction places of front jacking method and pipe roof method each, and we analysed the results of the measurement at each stage of construction to applied to the excution of construction.

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The New Ground-Down Construction Method of Ground Casting Using Jack-Pile (잭-파일을 이용한 지상타설 하강 신축공법에 대한 연구)

  • Lee, Yong Su;Byun, hang Yong;Sho, Kwang-Ho
    • Journal of the Architectural Institute of Korea
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    • v.36 no.6
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    • pp.211-218
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    • 2020
  • In recent years, construction works in urban areas have been developed in various forms, such as large-scale construction, high-rise construction, and increased use of underground spaces. Excavation facilities for excavation to perform underground excavation safely should maintain rigidity and displacement to prevent ground collapse and resist side pressure such as earth pressure and water pressure. In this study, the open casing method suitable for building construction was selected by analyzing the characteristics of the caisson foundation methods widely used in civil engineering. In addition, by applying the Jack-Pile method, which is currently used in the reinforcement method, the ground-falling new construction method using the jack pile is proposed. Press-fitted steel pipe pile method is a method of reinforcing the basic bearing capacity by checking the design bearing capacity by pressing the steel pipe pile into the ground using only hydraulic jack and hydraulic unit. In order to verify the proposed method, it was analyzed and presented at each construction stage. As a result, it was found that the existing air shortening, construction cost reduction and work safety were possible.