• Title/Summary/Keyword: Spatial Connection System

Search Result 125, Processing Time 0.02 seconds

Analysis on Connection of Information Infra for Efficient Ubiquitous-service Realization (효율적인 u-서비스 구현을 위한 정보 인프라 연계성 분석)

  • Choi, Pill-Soon;Kang, Joon-Mook;Park, Joon-Kyu
    • Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
    • /
    • v.29 no.5
    • /
    • pp.497-507
    • /
    • 2011
  • Ubiquitous city which was appeared since 2006 is defined as "The city provided the ubiquitous city service anytime and anywhere using ubiquitous urban infrastructure to improve the city's competitiveness and quality of life" under ubiquitous city construction law. To realize the ubiquitous city, the city has to be constructed efficiently based on the spatial information. And connection of information achieve effective synergy. In this study, applied multilateral analysis to spatial information and administrative information to implement u-service focused on MACCA(Multifunctional Administrative City Construction Agency). Study about main function and product data with connection process of Korean Land Spatialization System and administrative information System was performed. Also, details of u-service and method of acquiring necessary data were derived. In Addition, the information connection possibility for efficient u-service realization was suggested by linkage analysis method to utilize the related information infrastructure jointly.

Experimental study of Hydraulic Cable Connection Systems with Re-tensioning and Wireless Monitoring (재긴장과 무선 모니터링이 가능한 유압식 케이블 접합부시스템의 실험에 대한 연구)

  • Kim, Min-Su;Lee, Ki-Hak;Kim, Seong-Beom;Lee, Sung-Min;Baek, Ki-Youl
    • Journal of Korean Association for Spatial Structures
    • /
    • v.11 no.2
    • /
    • pp.71-79
    • /
    • 2011
  • Due to the self-equilibrium status of the cable system, the loss of the tensioning in the cable system results in other cables carrying larger tension forces than those initially calculated by structural engineers. Also, turn-buckle systems, which have been widely used to pre-tension and/or re-tension the cables, are limited to use for small cables and to provide a rough estimation for tension forces. In this study, the re-tensioning cable connection systems were developed to overcome the problems mentioned above. The main objective of the proposed system is to re-tension large cables and measure the exact amount of tension forces of the cable systems. This connection system is also combined with the wireless signal monitoring module so that engineers are able to measure the tension forces any place where the internet is available. This paper presents the development of the re-tensioning cable connection systems and experiment using the real-scale cable systems to verify the fe-tensioning and signal monitoring systems.

Seismic Performance and Design Process of a Ceiling Bracket-Typed Modular Connection (천장 브래킷형 모듈러 시스템의 접합부 내진 성능과 설계 프로세스)

  • Lee, Seungjae;Kang, Changhoon;Park, Jaeseong;Kwak, Euishin;Shon, Sudeok
    • Journal of Korean Association for Spatial Structures
    • /
    • v.20 no.3
    • /
    • pp.27-34
    • /
    • 2020
  • This paper examines the seismic performance and structural design of the ceiling bracket-type modular connection. The bracket-type system reduces the cross-sectional area loss of members and combines units using fitting steel plate, and it has been developed to be fit for medium-story and higher-story buildings. In particular, this study conducted the cyclic loading test for the performance of the C-type and L-type brackets, and compared the results. The test results were also compared with the commercial FEA program. In addition, the structural design process for the bracket-type modular connection was presented. The two connections, proposed as a result of the test results, were all found to secure the seismic performance level of the special moment steel frame. In the case of initial stiffness, the L-type bracket connection was found to be great, but in the case of the maximum moment or fully plastic moment, it was different depending on the loading direction.

A Study on the Floor Plan Type and the Spatial Composition of Standard Mental Health Centers in Seoul (서울시 기초정신건강증진센터의 평면유형 및 소요공간구성에 관한 연구)

  • Lim, Yen Jung;Chai, Choul Gyun
    • Journal of The Korea Institute of Healthcare Architecture
    • /
    • v.20 no.1
    • /
    • pp.45-55
    • /
    • 2014
  • Purpose: The purpose of this study is to provide data on the basis for architectural planning of floor plan type and spatial composition by analysing standard mental health centers in Seoul. Methods: Data were collected through literature research, field surveys, and expert interviews to 22 standard mental health centers in Seoul. Results: The results of this study could be summarized as follows; Firstly, Mental Health Center is divided into five types according to the location. Location types of mental health center were 'Director type', 'Health center connection type', 'Public facilities connection type', 'Complex center connection type' and 'Commercial Facilities connection type'. Secondly, Depending on the type of management a mental health center is divided into two types. Types are 'Complex type' and 'Independent type'. Average area of 'Complex type' is $192.99m^2$ and 'Independent type' is $266.87m^2$. This difference affects the various spaces. Implications: It is necessary to give and architectural suggestion of mental health center in response to the proposal of the system.

Tensile Strength on Connection Socket of Cables (케이블 연결 소켓의 인장강도)

  • Park, Kang-Geun;Lee, Jang-Bok;Ha, Chae-Won;Kim, Jae-Bong
    • Proceeding of KASS Symposium
    • /
    • 2008.05a
    • /
    • pp.37-42
    • /
    • 2008
  • Cable member in structure is tension systems in which the load carrying members transmit loads to support system by tensile stress with no compression or flexure allowed. Cable system have been widely used large span structure roof, air-supported structure, prestressed membrane, cable network roof, suspension structures, guyed tower, ocean platforms, suspension bridges. Cable member can transmit loads by the edge connected system such as socket, swaging, mechanical splice sleave, clip, wedge, loop splice etc. This study will shown an experimental results on the strength of connection socket of cables. In the results of experiment, most of cable connection specimen occurred the failure at the connection socket part before the cable arrived at tensile failure load.

  • PDF

Construction of Indoor and Outdoor Spatial Information Integration Service System based on Vector Model

  • Kim, Jun Hyun;Kwon, Kee Wook
    • Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
    • /
    • v.36 no.3
    • /
    • pp.185-196
    • /
    • 2018
  • In order to overcome the problem that outdoor and indoor spatial information service are separately utilized, an integration service system of spatial information that is linked from outdoor to indoor has been implemented. As a result of the study, "0001.xml" corresponding to the file index key value, which is the service connection information in the building information of the destination, was extracted from the prototype verification of the system, the search word of 'Kim AB' was transmitted to the indoor map server and converted from the outdoor map service to the indoor map service through confirmation of the navigation service connected information, using service linkage information and search words of the indoor map service was confirmed that the route was displayed from the entrance of the building to the destination in the building through the linkage search DB (Database) table and the search query. Therefore, through this study was examined the possibility of linking indoor and outdoor DB through vector spatial information integration service system. The indoor map and the map engine were implemented based on the same vector map format as the outdoor map engine, it was confirmed that the connectivity of the map engine can be applied.

Spatial Big Data Query Processing System Supporting SQL-based Query Language in Hadoop (Hadoop에서 SQL 기반 질의언어를 지원하는 공간 빅데이터 질의처리 시스템)

  • Joo, In-Hak
    • The Journal of Korea Institute of Information, Electronics, and Communication Technology
    • /
    • v.10 no.1
    • /
    • pp.1-8
    • /
    • 2017
  • In this paper we present a spatial big data query processing system that can store spatial data in Hadoop and query the data with SQL-based query language. The system stores large-scale spatial data in HDFS-based storage system, and supports spatial queries expressed in SQL-based query language extended for spatial data processing. It supports standard spatial data types and functions defined in OGC simple feature model in the query language. This paper presents the development of core functions of the system including query language parsing, query validation, query planning, and connection with storage system. We compares the performance of the suggested system with an existing system, and our experiments show that the system shows about 58% performance improvement of query execution time over the existing system when executing region query for spatial data stored in Hadoop.

Story Drift of a Frame with Column Flange Bolted-Beam Web Welded Double Angle Connections (더블앵글로 접합된 골조의 수평처짐)

  • Yang, Jae-Guen;Kim, Ho-Keun;Kim, Ki-Hwan
    • Journal of Korean Association for Spatial Structures
    • /
    • v.3 no.3 s.9
    • /
    • pp.95-103
    • /
    • 2003
  • Frame is one of the most commonly used structural systems for the resistance of applied loads. Many researchers have recently conducted their studies to investigate the effect of several parameters such as the connection flexibility, boundary condition of each support, beam-to-column stiffness ratio. These parameters play important roles on the characteristic behavior of frames. A simplified spring model is proposed to obtain the story drifts of frames with various beam-to-column connection stiffnesses in this research. A point bracing system with adequate spring stiffness is also suggested to establish the relationship between the applied load and the resisting translational spring stiffness within the limit state of story drift.

  • PDF

Simplified Analytical Model for a Steel Frame with Double Angle Connections (더블앵글 접합부를 사용한 철골조의 단순해석 모델)

  • Yang, Jae-Guen;Lee, Gil-Young;Park, Jeong-Suk
    • Journal of Korean Association for Spatial Structures
    • /
    • v.6 no.1 s.19
    • /
    • pp.45-54
    • /
    • 2006
  • A steel frame is one of the most commonly used structural systems due to its resistance to various types of applied loads. Many studies have been conducted to investigate the effects of connection flexibility, support conditions, and beam-to-column stiffness ratio on the story drift of a frame. Based on the results of these studies, several design guides have been proposed. This research has been conducted to predict the actual behavior of a double angle connection, and to establish its effect on the story drift and the maximum allowable load of a steel frame. For these purposes, several experimental tests were conducted and a simplified analytical model was proposed. This simplified analytical model consists of four spring elements as well as a column member. In addition, a point bracing system was proposed to control the excessive story drift of an unbraced steel frame.

  • PDF

Spatial target path following and coordinated control of multiple UUVs

  • Qi, Xue;Xiang, Peng;Cai, Zhi-jun
    • International Journal of Naval Architecture and Ocean Engineering
    • /
    • v.12 no.1
    • /
    • pp.832-842
    • /
    • 2020
  • The coordination control of multiple Underactuated Underwater Vehicles (UUVs) moving in three dimensional space is investigated in this paper. The coordinated path following control task is decomposed into two sub tasks, that is, path following control and coordination control. In the spatial curve path following control task, path following error dynamics is build in the Serret-Frenet coordinate frame. The virtual reference object can be chosen freely on the desired spatial path. Considering the speed of the UUV, the line-of-sight navigation is introduced to help the path following errors quickly converge to zero. In the coordination control sub task, the communication topology of multiple UUVs is described by the graph theory. The speed of each UUV is adjusted to achieve the coordination. The path following system and the coordination control system are viewed as the feedback connection system. Input-to-state stable of the coordinated path following system can be proved by small gain theorem. The simulation experiments can further demonstrate the good performance of the control method.