• 한국공작기계학회:학술대회논문집
• /
• 한국공작기계학회 2002년도 추계학술대회 논문집
• /
• pp.481-486
• /
• 2002

Automation of Field Robot has many advantages for efficiency and convenience. In this paper, mathematical equation of field robot is established and automation system is constructed. Hydraulic and Dynamic equation of field robot are constructed in this paper. Inputs of system are angle data from each link (boom, arm, bucket, swing) and pressure data from in, out port of each cylinder. Outputs of system are voltage into electo-proportional valve.

• 한국해양공학회지
• /
• 제11권3호
• /
• pp.200-211
• /
• 1997

Most recently, offshore Engineering & Construction field is concerned about integration management technology such as CIM(Computer Integrated Manufacturing), PDM(Product Data Management) and Enterprise Information Engineering in order to cope with the rapid change of engineering and manufacturer specification as per owner's requirement during construction stage of the project. System integration and integrated data modeling with relational database in integration management technology improve the quality of product and reduce the period of the construction project by reason of owing design information jointly. This paper represents the design methodology of system integration using Business Process Reengineering by the case study. The case study is about the offshore plant material information process from front end engineering design to detail engineering for the construction and the basis of monitoring system by integrating and sharing the design information between the 2D intelligent P&ID and 3D plant modeling using relational database. As a result of the integrated data modeling and system integration, it is possible to maintain the consistency of design process in point of view of the material balancing and reduce the design assumption/duration. Near future, this system will be expanded and connected with the MRP(Material Requirement Planing) and the POR (Purchase Order Requisition) system.

• 한국건설관리학회논문집
• /
• 제8권5호
• /
• pp.182-190
• /
• 2007

국내 중 소규모 건설 산업은 시공분야를 중심으로 발전하여 왔으며 소프트분야가 상대적으로 취약하다. 또한 다양한 발주 체계가 활용되지 못하는 문제점을 안고 진행되고 있다. 더욱이 현재 국내 건설 프로젝트들은 자금력과 기술력을 갖춘 대형 건설업체들이 경쟁 우위를 점하고 있어 중 소규모 건설업체들의 입지가 줄어들고 있다. 최근국내 외 건설시장의 대형화, 고도화와 함께 기술집약적인 공사가 늘어감에 따라 기술경쟁이 가능한 설계시공일괄(Design-Build)방식의 건설 산업이 늘어나고 있는 추세이며 규모가 작은 중 소건설기업의 상황에서는 더욱 건설시장에서 효과적인 경쟁력을 보유하여야 할 것으로 예상한다. 이에 본 연구는 디자인 빌드 방식의 성공요인과 중 소규모 프로젝트 사례조사를 한 후 AHP 분석을 통해 성공요인 도출 및 중요도 분석을 함으로써 중 소규모 건설업체의 디자인 빌드 방식의 성공적 수행을 위한 중점 관리요인을 제시하고자 한다. 그리하여 향후 중 소 건설업체의 발전과 생산성 향상을 위한 기반을 제공하고자 한다.

• 한국건설관리학회논문집
• /
• 제25권3호
• /
• pp.58-67
• /
• 2024

4차 산업 시대에서의 데이터는 산업의 생산성을 높이는 데 매우 중요한 역할을 하고 있다. 활용 가능한 데이터가 부족한 건설산업의 디지털화 수준을 높이기 위해서 본 연구에서는 건설 현장 사진을 공종별로 분류하는 모델을 연구하였다. 이미지만을 가지고 분류하는 기존의 이미지 분류 모델과 달리, 본 연구는 표준시방서에서 객체와 공종 간의 중요도를 추출하여 이를 분류 과정에 반영하는 방식으로 공종에 대한 의미론적인 분석을 포함한 분류 모델을 제안하였다. 객체와 공종 간의 중요도는 사진 내에서 탐지한 객체와 표준시방서의 정보를 연결하여 추출한 후 모델에 반영하였고, 이러한 방식으로 개발된 모델을 분류 프로그램에 적용하여 실제 실무에서의 유용성을 확인해 보았다. 제안한 모델은 결과에 해석가능성과 신뢰도를 높여주는 것뿐만 아니라 현장 기사들이 사진을 분류하는데 용이성을 주게 되며, 이러한 연구의 결과는 건설산업의 디지털화에 기여할 수 있을 것이다.

• 한국건축시공학회:학술대회논문집
• /
• 한국건축시공학회 2006년도 추계 학술논문 발표대회 논문집
• /
• pp.33-36
• /
• 2006

This Study is based on manufacture non-sintering cement(NSC) by adding phosphogysum and waste lime to GBFS as sulfate and alkali activators. This study also investigates the basic physical properties and duality of NSC, and evaluates its reusing possibility as construction materials. Therefore, we design 40MPa and 60MPa for compressive strength using OPC and NSC by binder. And There is a purpose to present fundamental data, applying in field and analyzing quality control of concrete using NSC according to rate of replace between OPC and NSC.

• 한국철도학회:학술대회논문집
• /
• 한국철도학회 2011년도 춘계학술대회 논문집
• /
• pp.511-514
• /
• 2011

The impact of greenhouse gas (GHG) emissions is the global issue over the world. Korean government has presented various policies to induce GHG reduction for the industries with high energy consumption such as power generation and chemistry. Construction sector has produced a large amount of GHG emissions resulted in the energy consumption of heavy equipments and the use of materials. This study aims to suggest the QA (Quality Assurance) and QC (Quality Control) method to identify and quantify the GHG emissions released from heavy equipments in the railroad construction sector. Generally, the accuracy and reliability of GHG inventory is dependent on the data collection. Therefore, it is necessary to mange the detailed statements for the fuel consumption of heavy equipments and the quantity of work in the field. Also, the breakdown of GHG emission sources should be recorded from the design step of railroad infrastructures. Based on these data, the GHG reduction technologies and polices can be applied in railroad construction sector.

• 한국건축시공학회:학술대회논문집
• /
• 한국건축시공학회 2022년도 봄 학술논문 발표대회
• /
• pp.229-230
• /
• 2022

With the development of digital technology, construction companies at home and abroad are in the process of computerizing work and site information for the purpose of improving work efficiency. To this end, various technologies such as BIM, digital twin, and AI-based safety management have been developed, but the accuracy and completeness of the related technologies are insufficient to be applied to the field. In this paper, the learning data that has undergone a pre-processing process optimized for recognition of construction information based on structural members is trained on an existing artificial intelligence model to improve recognition accuracy and evaluate its effectiveness. The artificial intelligence model optimized for the structural member created through this study will be used as a base technology for the technology that needs to confirm the safety of the structure in the future.

• 한국지반공학회:학술대회논문집
• /
• 한국지반공학회 1994년도 가을 학술발표회 논문집
• /
• pp.235-246
• /
• 1994

At pre-construction design stage, most of the design data are based on the site investigation results or property estimation which often does not provide satisfactory output for the tunnel analysis. Nonlinear FEM tunnel analysis was cariied out by Hoek-Brown model which is principly semi-empirical design method based on insitu rock descriptions, rock test results as well as field measurement data. The results of the analytical methods from Hoek-Brown model and Mohr-Coulomb model are compared with the sige measurement data from two-NATM tunnel construction sites. It was found that the Hoek-Brown model can be satisfactorily adopted as a feed back analysis technique in order to examin the safety of NATM tunnel at any construction stage.

• 국제학술발표논문집
• /
• The 6th International Conference on Construction Engineering and Project Management
• /
• pp.321-323
• /
• 2015

Monitoring crane motion in real time is the first step to identifying and mitigating crane-related hazards on construction sites. However, no accurate and reliable crane motion capturing technique is available to serve this purpose. The objective of this research is to explore a method for real-time crane motion capturing and investigate an approach for assisting hazard detection. To achieve this goal, this research employed various techniques including: 1) a sensor-based method that accurately, reliably, and comprehensively captures crane motions in real-time; 2) computationally efficient algorithms for fusing and processing sensing data (e.g., distance, angle, acceleration) from different types of sensors; 3) an approach that integrates crane motion data with known as-is environment data to detect hazards associated with lifting tasks; and 4) a strategy that effectively presents crane operator with crane motion information and warn them with potential hazards. A prototype system was developed and tested on a real crane in a field environment. The results show that the system is able to continuously and accurately monitor crane motion in real-time.

• 국제학술발표논문집
• /
• The 3th International Conference on Construction Engineering and Project Management
• /
• pp.1388-1395
• /
• 2009

In March 2007, Korea's Ministry of Construction & Transportation (MOCT) established "Guidelines on the Computerization and Use of Geotechnical Investigation Results," which took effect as official instructions. The 2007 Geotechnical Information DB Construction Project is underway as a model project for a stable geotechnical information distribution system based on the MOCT guidelines, accompanied by user education on the geotechnical data distribution system. This study introduces a geotechnical data entry system characterized by the standardization of the geotechnical investigation form, the standardization of metadata for creating the geotechnical data to be distributed, and the creation of borehole space data based on the world geodetic system according to the changes in the national coordinate system, to define a unified DB structure and the items for the geotechnical data entry system and to computerize the field geotechnical investigation results using the MOCT guidelines. In addition, the present operating status of the geotechnical data entry system and entry data processing statistics are introduced through an analysis of the model project, and the problems of the project are analyzed to suggest improvements. Education on, and the implementation of, the model project for the geotechnical data entry system, which was developed via the standardization of the geotechnical investigation results form and the metadata for institutions showed that most users can use the system easily. There were problems, however, including those related to the complexity of metadata creation, partial errors in moving to the borehole data window, partial recognition errors in the installation program for different computer operating systems, etc. Especially, the individual standard form usage and the specificity of the person who enters the geotechnical information for the Korea National Housing Corporation, among the institutions under MOCT, required partial improvement of the geotechnical data entry system. The problems surfaced from this study will be promptly addressed in the operation and management of the geotechnical data DB center in 2008.