Korean Journal of Construction Engineering and Management最新文献_第6页

A Study on 3D Indoor mapping for as-built BIM creation by using Graph-based SLAM 基于Graph-based SLAM的BIM建成后室内三维制图研究

Korean Journal of Construction Engineering and Management Pub Date : 2016-05-31 DOI: 10.6106/KJCEM.2016.17.3.032

Jaehoon Jung, Sanghyun Yoon, Stachniss Cyrill, J. Heo

{"title":"A Study on 3D Indoor mapping for as-built BIM creation by using Graph-based SLAM","authors":"Jaehoon Jung, Sanghyun Yoon, Stachniss Cyrill, J. Heo","doi":"10.6106/KJCEM.2016.17.3.032","DOIUrl":"https://doi.org/10.6106/KJCEM.2016.17.3.032","url":null,"abstract":"Abstract : In Korea, the absence of BIM use in existing civil structures and buildings is driving a demand for as-built BIM. As-built BIMs are often created using laser scanners that provide dense 3D point cloud data. Conventional static laser scanning approaches often suffer from limitations in their operability due to the difficulties in moving the equipment, the selection of scanning location, and the requirement of placing targets or extracting tie points for registration of each scanned point cloud. This paper aims at reducing the manual effort using a kinematic 3D laser scanning system based on graph-based simultaneous localization and mapping (SLAM) for continuous indoor mapping. The robotic platform carries three 2D laser scanners: the front scanner is mounted horizontally to compute the robot’s trajectory and to build the SLAM graph; the other two scanners are mounted vertically to scan the profiles of surrounding environments. To reduce the accumulated error in the trajectory of the platform through loop closures, the graph-based SLAM system incorporates AdaBoost loop closure approach, which is particularly suitable for the developed multi-scanner system providing more features than the single-scanner system for training. We implemented the proposed method and evaluated it in two indoor test sites. Our experimental results show that the false positive rate was reduced by 13.6% and 7.9% for the two dataset. Finally, the 2D and 3D mapping results of the two test sites confirmed the effectiveness of the proposed graph-based SLAM.","PeriodicalId":220018,"journal":{"name":"Korean Journal of Construction Engineering and Management","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123560325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Factors Determining the Price of Remodeled Multi-family Housing 多户住宅改造价格的影响因素分析

Korean Journal of Construction Engineering and Management Pub Date : 2016-05-31 DOI: 10.6106/KJCEM.2016.17.3.013

Jaesung Kim, Kyuman Cho, Tae Hoon Kim

引用次数: 2

Development Acceptable Risk Model for International Construction Projects - Focusing on Small and Medium Construction Companies - 国际建筑项目发展可接受风险模型——以中小型建筑公司为重点

Korean Journal of Construction Engineering and Management Pub Date : 2016-05-31 DOI: 10.6106/KJCEM.2016.17.3.090

Geunouk Hwang, Chan Young Park, Woosik Jang, S. Han, S. Kang

{"title":"Development Acceptable Risk Model for International Construction Projects - Focusing on Small and Medium Construction Companies -","authors":"Geunouk Hwang, Chan Young Park, Woosik Jang, S. Han, S. Kang","doi":"10.6106/KJCEM.2016.17.3.090","DOIUrl":"https://doi.org/10.6106/KJCEM.2016.17.3.090","url":null,"abstract":"Since Korean construction firms have steadily advanced into the international market, small and medium construction companies (SMCCs) have also advanced in such market. SMCCs’s recent trend have clearly shown the changes of contract types from single subcontractor projects to multiple general contracting projects. However, among those multiple projects performed by SMCCs, 1 out of 3 projects were deficit projects that impact the overall performance of the firm. To increase such performance, risk management for in international construction must be managed at the enterprise level for SMCCs. This research aims to create a multiple project management model for SMCCS that employs the concept of acceptable risk to assess the limit risk level for corporation to acceptable. Using the accumulated data from previous survey and International Construction Association of Korea (ICAK), integrated risk of each firm and their profitability of each project are analyzed. Through the analysis, each firm’s acceptable risk level is derived. Through the two research steps, acceptable risk algorithm was developed based on corporate integrated risk and profit correlation. To prove the acceptable algorithm relevance, financial statement analysis of 3 corporation was derived that level of acceptable risk and financial statement were available. Through the approach, this research allows the firms to analyze the firm’s capability and find projects that suits the firm’s situation and capability.","PeriodicalId":220018,"journal":{"name":"Korean Journal of Construction Engineering and Management","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132219502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

A Development Direction of Infrastructure Based Disaster Mitigation & Management Integrated System 基于基础设施的减灾管理综合系统的发展方向

Korean Journal of Construction Engineering and Management Pub Date : 2016-05-31 DOI: 10.6106/KJCEM.2016.17.3.134

Suyeul Park, E. Oh, Bong-Hyuck Choi, Jin-Man Kim

{"title":"A Development Direction of Infrastructure Based Disaster Mitigation & Management Integrated System","authors":"Suyeul Park, E. Oh, Bong-Hyuck Choi, Jin-Man Kim","doi":"10.6106/KJCEM.2016.17.3.134","DOIUrl":"https://doi.org/10.6106/KJCEM.2016.17.3.134","url":null,"abstract":"Main infrastructures, such as levee, dam, bridge, road, etc., are very important due to not only the means of support for social and industrial activities in normal situation but also the means of protection of life and property during disaster occurrence. In spite of this importance of infrastructures, however, any disaster management systems that actively use these infrastructures are not developed yet. Moreover, infrastructures are not usually included in emergency action plans, thus it occurs second and third impact on communities and industries due to collapsing or damage of infrastructures. Therefore, the authors in this paper analyzed previous research, SWOT, STEEP, and patents and technical journals and conducted a technology need survey in order to understand the trend of disaster management system as well as suggest main research fields and detail research items. The results of this paper will be a foundation of developing an advanced infrastructure integrated system of maintenance and disaster mitigation and contribute our nation to have an active response system by using infrastructure.","PeriodicalId":220018,"journal":{"name":"Korean Journal of Construction Engineering and Management","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130258364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Study of the Price Determinants for Public Residential Land Investment - From the Perspective of Land and Market Factors - 公共住宅用地投资的价格决定因素研究——基于土地和市场因素的视角

Korean Journal of Construction Engineering and Management Pub Date : 2016-05-31 DOI: 10.6106/KJCEM.2016.17.3.108

Kiheon Choi, Sangyoub Lee

引用次数: 0

Probabilistic Project Duration Estimation by Combination of PERT and PLET in High-Risk Project 基于PERT和PLET的高风险项目工期概率估计

Korean Journal of Construction Engineering and Management Pub Date : 2016-05-31 DOI: 10.6106/KJCEM.2016.17.3.071

Seon Gyoo Kim, Junyoung Kim

{"title":"Probabilistic Project Duration Estimation by Combination of PERT and PLET in High-Risk Project","authors":"Seon Gyoo Kim, Junyoung Kim","doi":"10.6106/KJCEM.2016.17.3.071","DOIUrl":"https://doi.org/10.6106/KJCEM.2016.17.3.071","url":null,"abstract":"Abstract : PERT(Project Evaluation and Review Technique) is typical method in order to probabilistically establish the schedule plan for large scale complex project or mega project. PERT technique is impossible to estimate relationship of each activity probabilistically when there are overlapping relationships because it is limited to Finish-to-Start(FS) relationship. In order to overcome this kind of limitation of PERT technique, PLET(Probabilistic Linkage Evaluation Technique) has been suggested to probabilistically estimate project duration for various overlapping relationships for each activity. However, estimating project duration by PLET technique only considers uncertainty of relationship between activities and not activity time, thus it is not the perfect duration estimating method. The main objective of this research is to propose the integration model of PERT and PLET and verify its probabilistic validity. By verifying application of time calculation method of integration model in practical case, this research will suggest probabilistic project duration estimating method in schedule plan of high-risk construction industry.","PeriodicalId":220018,"journal":{"name":"Korean Journal of Construction Engineering and Management","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116038390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Task-Visual Information Map to Develop AR Navigators of Construction Equipment 开发建筑设备 AR 导航器的任务-视觉信息地图

Korean Journal of Construction Engineering and Management Pub Date : 2016-05-31 DOI: 10.6106/KJCEM.2016.17.3.116

Sujing Song, Hojun Kang, H. Kim, Taenam Moon, Do Hyoung Shin

{"title":"Task-Visual Information Map to Develop AR Navigators of Construction Equipment","authors":"Sujing Song, Hojun Kang, H. Kim, Taenam Moon, Do Hyoung Shin","doi":"10.6106/KJCEM.2016.17.3.116","DOIUrl":"https://doi.org/10.6106/KJCEM.2016.17.3.116","url":null,"abstract":": Work efficiency of earth work which is one of the main works occurring in construction site mainly depends on the performance of individual operators of earth work equipment. Consequently, the skill of individual operators of earth work equipment can significantly affect overall construction schedules. Many invisible areas inevitably exist in construction site because of the nature of construction site where occlusions occur from structures being built, installed or moving equipment, moving workers, etc. The lack of visual information regarding tasks critically impedes the effective performance of operators of earth work equipment. AR (Augmented Reality) is a computer technology that superimposes virtual objects onto the real world scene. This characteristic of AR may address the lack of visual informations in earth work process, thus helping to improve the work efficiency of operators of earth work equipment. The purpose of this study is to present a task-visual information map that identifies visual informations required in tasks of earth work and which of the tasks are suitable for AR technology. This study focuses on visual informations in tasks of earth work with excavators. The map was created based on the investigations on the problems of each task of earth work with excavators and visual informations required to address the problems. Through the map, four visual informations were found to be suitable for AR technology to improve the work efficiency of excavator operators. Based on the findings of this study, AR systems for excavators can be developed more effectively.","PeriodicalId":220018,"journal":{"name":"Korean Journal of Construction Engineering and Management","volume":"126 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131533769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Development of Time-Cost Trade-Off model Based on Emergency Construction Work Scenario 基于应急施工场景的时间成本权衡模型的建立

Korean Journal of Construction Engineering and Management Pub Date : 2016-05-31 DOI: 10.6106/KJCEM.2016.17.3.043

Sihyun Lee, Seounghyun Lee, J. Son

引用次数: 0

A Study on the Investigation into Obstacles in Construction Budget Estimating 工程造价估算障碍调查研究

Korean Journal of Construction Engineering and Management Pub Date : 2016-05-31 DOI: 10.6106/KJCEM.2016.17.3.081

Kyojun Koo, Han-soo Kim

引用次数: 0

BIM-based Repair&Replacement (R&R) Cost Estimating Process 基于bim的维修和更换(R&R)成本估算流程

Korean Journal of Construction Engineering and Management Pub Date : 2016-03-31 DOI: 10.6106/KJCEM.2016.17.2.031

Jieun Park, Jungho Yu

{"title":"BIM-based Repair&Replacement (R&R) Cost Estimating Process","authors":"Jieun Park, Jungho Yu","doi":"10.6106/KJCEM.2016.17.2.031","DOIUrl":"https://doi.org/10.6106/KJCEM.2016.17.2.031","url":null,"abstract":": In a construction project, the portion for maintenance costs for a building is considerable compared to the initial construction cost. As such, Life Cycle Cost (LCC) analysis is being increasingly utilized to assess the design value of engineering work in Korea. Additionally, the Public Procurement Service in Korea announced that it will be mandatory for all domestic construction projects to adopt BIM. Furthermore, the paradigm for architectural design has shifted from 2D to 3D, and to BIM, which includes a data management system. Within this background, however, there is currently no adequate BIM-based LCC analysis software and the requirements of cost estimation for repair and replacement cost for a building is not completely adequate in BIM tools such as Revit and Archicad. Therefore, this study suggests a process of cost estimation for repair and replacement (R&R) cost based on IFC data. First, we analyzed existing R&R criteria and defined BIM-based requirements when calculating R&R costs. These requirements were extracted from relevant IFC data. Subsequently, this was saved to a database and a BIM-based database was built for R&R cost estimation. Finally, this database was connected with external databases such as R&R Criteria DB and Cost Information DB to calculate R&R costs. This process is expected to improve upon the traditional process of cost estimation of R&R cost by applying a BIM model. The proposed process can contribute to a further standardizing of BIM-based LCC analysis thru application to initial construction costs, energy costs, and other maintenance costs.","PeriodicalId":220018,"journal":{"name":"Korean Journal of Construction Engineering and Management","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114168968","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0