• Title/Summary/Keyword: in-place analysis

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Structural performance assessment of fixed offshore platform based on in-place analysis

  • Raheem, Shehata E. Abdel;Aal, Elsayed M. Abdel;AbdelShafy, Aly G.A.;Mansour, Mahmoud H.;Omar, Mohamed
    • Coupled systems mechanics
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    • v.9 no.5
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    • pp.433-454
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    • 2020
  • In-place analysis for offshore platforms is essentially required to make proper design for new structures and true assessment for existing structures. The structural integrity of platform components under the maximum and minimum operating loads of environmental conditions is required for risk assessment and inspection plan development. In-place analyses have been executed to check that the structural member with all appurtenances robustness and capability to support the applied loads in either storm condition or operating condition. A nonlinear finite element analysis is adopted for the platform structure above the seabed and the pile-soil interaction to estimate the in-place behavior of a typical fixed offshore platform. The analysis includes interpretation of dynamic design parameters based on the available site-specific data, together with foundation design recommendations for in-place loading conditions. The SACS software is utilized to calculate the natural frequencies of the model and to obtain the response of platform joints according to in-place analysis then the stresses at selected members, as well as their nodal displacements. The directions of environmental loads and water depth variations have important effects on the results of the in-place analysis behavior. The result shows that the in-place analysis is quite crucial for safe design and operation of offshore platform and assessment for existing offshore structures.

An Analysis of Urban Preference in Urban type Elderly Housing in Aging in Place - Around Housing Survey and Future Population Projection and Elderly Survey -

  • Kang, Moon-Chul;Kim, Young-Hoon
    • KIEAE Journal
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    • v.17 no.5
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    • pp.5-14
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    • 2017
  • Purpose: In korea, Aging in Place is underway as an alternative to elderly housing for the aging population. Currently, research is being actively conducted mainly for the baby boomer generation and older generation. There is not much research on various ages that will be needed continuously in elderly housing and aging in place in the future. Therefore, this study suggests aging in place of urban elderly housing through analysis of urban preference of all ages. Method: An analysis of prior studies related to elderly housing, Field interpretation about Aging in Place, An analysis of the city preference through the survey of the elderly, Existing Literature Survey, Housing Survey, Future Population Projection, Survey of the elderly and confirmed the necessity of the Aging in Place of urban elderly housing. Result: As there are many generations living in the city and many people prefer it, studies on urban elderly housing should be actively conducted and should be studied as Aging in Place that can be used for all ages. In addition, it is necessary to study the advantages and disadvantages of using Aging in Place in the city through domestic or overseas case analysis.

The Relationship between Childhood and Collegehood Place Attachment to Home Environment for College Students 1) (대학생의 아동기 집과 현재 집에 대한 장소애착의 관련성)

  • Choi, Byung-Sook;Lee, Jin-Suk;Han, Young-Sook
    • Korean Journal of Human Ecology
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    • v.19 no.5
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    • pp.905-918
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    • 2010
  • This study explored Korean college students' place attachment to current home environments and their place attachment to childhood home environments. The study sought to confirm the relationship between childhood place attachment and collegehood place attachment to home environment. Data were collected from 336 students at four universities in Jellabuk-Do, Korea, and questionnaire survey was performed. Exploratory and confirmatory factor analysis was computed and showed five factors related to place attachment of home environment. Place intimacy, rootedness, place identity, place dependence, and place palyness showed in childhood place attachment to home; place identity, place affection, place restfulness, place dependence, and rootedness in collegehood place attachment to home. Canonical correlation analysis showed that childhood place attachment to home explained 43.9% variance with regard to collegehood place attachment to home. This relationship implied that childhood place attachment strongly affected subsequent collegehood place attachment.

Importance Analysis of Image Evaluation Items that Recognize Places (장소를 인식하는 이미지 평가항목에 대한 중요도 분석)

  • Lee, Lim-Jung;Kim, Kwang-Soo;Kim, Min-Seok
    • Journal of the Korean Institute of Rural Architecture
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    • v.24 no.3
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    • pp.1-11
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    • 2022
  • Purpose: This place, which is currently becoming an issue due to historical preservation and landscape protection, is also a place where urban residents around Taereung actually visit often. Thus, this study aims to analyze the importance of the evaluating factors in creating a relatable image of the city. Methods: Evaluation items were selected by reviewing related books and research literatures and reassessing the reviewed items through an expert group interview (FGI). For the selected evaluation items, the relative importance of the evaluation items for the place image was analyzed by applying the hierarchical analysis technique (AHP) to each user group. Result: A place becomes a memory in people's experiences and time, and it has the image and identity of the region where those experiences and memories are found again as a space called "place". The method of analyzing the importance of evaluation items between place images used in this study quantified the factors recognized as abstract images and identified the degree of influence between elements, but has limitation in that it targeted specific places. However, the analysis method on the place image recognition suggests the use of itemized variables for characteristics between place images, so future research on the identity of other place images can be conducted together. Also, the evaluation method of the image that recognizes the place has an objective meaning in that it can measure the image of the place quantitatively. In the future, it can be applied in creating an image forming factor or urban identity for place recognition in many regions

Numerical analysis for structure-pile-fluid-soil interaction model of fixed offshore platform

  • Raheem, Shehata E. Abdel;Aal, Elsayed M. Abdel;AbdelShafy, Aly G.A.;Mansour, Mahmoud H.;Omar, Mohamed
    • Ocean Systems Engineering
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    • v.10 no.3
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    • pp.243-266
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    • 2020
  • In-place analysis for offshore platforms is required to make proper design for new structures and true assessment for existing structures. In addition, ensure the structural integrity of platforms components under the maximum and minimum operating loads and environmental conditions. In-place analysis was carried out to verify the robustness and capability of structural members with all appurtenances to support the applied loads in either operating condition or storm conditions. A nonlinear finite element analysis is adopted for the platform structure above the seabed and the pile-soil interaction to estimate the in-place behavior of a typical fixed offshore platform. The SACS software is utilized to calculate the natural frequencies of the model and to obtain the response of platform joints according to in-place analysis then the stresses at selected members, as well as their nodal displacements. The directions of environmental loads and water depth variations have an important effect on the results of the in-place analysis behavior. The influence of the soil-structure interaction on the response of the jacket foundation predicts is necessary to estimate the loads of the offshore platform well and real simulation of offshore foundation for the in-place analysis. The result of the study shows that the in-place response investigation is quite crucial for safe design and operation of offshore platform against the variation of environmental loads.

Tensile Design Criteria Evaluation of Cast-In-Place Anchor by Numerical Analysis (수치해석에 의한 직매형 앵커기초의 인장 설계기준 평가)

  • 장정범;서용표;이종림
    • Proceedings of the Computational Structural Engineering Institute Conference
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    • 2004.04a
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    • pp.209-216
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    • 2004
  • Numerical analysis is carried out to identify the appropriateness of the design codes that is available for the tensile design of fastening system at Nuclear Power Plant (NPP) in this study. This study is intended for the cast-in-place anchor that is widely used for the fastening of equipment in Korean NPPs. The microplane model and the elastic-perfectly plastic model are employed for the quasi-brittle material like concrete and for the ductile material like anchor bolt as constitutive model for numerical analysis and smeared crack model is employed for the crack and damage phenomena. The developed numerical model is verified on a basis of the various test data of cast-in-place anchor. The appropriateness of both ACI 349 Code and CCD approach of CEB-FIP Code is evaluated for the tensile design of cast-in-place anchor and it is proved that both design codes give a conservative results compared with real tensile capacity of cast-in-place anchor.

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EVALUATION OF NONDESTRUCTIVE TESTS ANALYSIS TO ESTIMATE INPLACE STRENGTH OF CONCRETE

  • Parviz Ghoddousi;Mohsen Tadayon;Pedram H. Mojarad
    • International conference on construction engineering and project management
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    • 2005.10a
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    • pp.672-680
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    • 2005
  • There are a lot of reasons to use In-place tests. Construction schedules often require that operations such as form removal, post-tensioning, termination of curing, and removal of reshores be carried out as early as possible. To enable these operations to proceed safely as soon as possible requires the use of reliable in-place tests to estimate the in-place strength. In-place test results are not reliable for engineering judgment. These results should be interpreted and correlated to standard compressive strength, based on the test method. In this paper some of these test procedures and their limitations are discussed. In this study we will go on for Rebound number, Pullout, Ultrasonic pulse velocity, and Cast-in-place cylinder methods which are most useful methods in the Asia.

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Comparative Study on the Traditional Market with the Department Store for Placeness Analysis - Focusing on Namdaemun Market Area - (재래시장 장소성 해석을 위한 백화점과의 비교연구 - 남대문상권을 중심으로 -)

  • Kim, In-Sook;Kim, Young-Ook
    • Journal of the Architectural Institute of Korea Planning & Design
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    • v.34 no.12
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    • pp.21-30
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    • 2018
  • The traditional market has formed for itself through a long time thus has special value of the place. The tangible value of the traditional market is high, however, it became jeopardized to be dismantled since it can not cope with the consumption environment of modern society. Modern industrial society provides an inefficiently and standardized solution to the traditional market by ignoring the identity of place only by the value the traditional market in the law of large distribution industry. This study aims to define the placeness of Namdaemun traditional market by considering tangible value of place. The identity of the place was analyzed as a spatial configuration, space organization, and sense of place through the place's physical setting, activities, and meanings by Edward Ralph. Based on the analysis by Ralph, we analyzed the traditional market and compare to the department store, which is the representative of large scale distributor, using comparative method. We performed quantitative and integrative analysis for the placeness and provide a way to appraise the worth of the traditional market by deviating from the traditional evaluation method.

Development and Validation of Place Attachment to Childhood Home Scale (아동기 집에 대한 장소애착 척도 개발과 타당화 연구)

  • Lee, Jin-Suk;Choi, Byung-Sook;Han, Ji-Hyeon;Han, Young-Sook
    • Korean Journal of Child Studies
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    • v.30 no.6
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    • pp.549-566
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    • 2009
  • This study developed the Place Attachment to Childhood Home Scale and evaluated its validity and reliability. Samples consisted of 418 college students of four universities. Data were collected by questionnaire based on retrospective questions about the childhood home. Factor analysis resulted in 5 dimensions of place attachment : affection, place identity, place rootedness, playfulness, and place dependence. Especially, playfulness was a unique finding. The result of confirmatory factor analysis supported the five-factor structure. There were also significant correlations among sub-factors. The reliability of the scale appeared high (Cronbach's ${\alpha}$ = .948). Criterion-related validity was confirmed by significant correlations of the present scale with Attachment Scale to Place (Hess, 1997) and the Inventory of Parent Attachment (Armsden & Greenberg, 1987).

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Study on the Placeness of Geoffrey Bawa's Architecture - Focus on the Analysis of Lunuganga - (제프리 바와 건축의 장소적 특성에 관한 연구 - 루누강가 작품분석을 중심으로 -)

  • Lee, In-Su;Lee, Jung-Wook;An, Eun-Hee
    • Korean Institute of Interior Design Journal
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    • v.23 no.3
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    • pp.39-47
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    • 2014
  • This study was initiated by the fact that modern architecture caused the loss of placeness by seeing place with wrong interpretation and method and provided people with a phenonenon of separation between the depth of experience and honesty. As a solution for such problems, this study intended to suggest a direction through an analysis on the works of Geoffrey Bawa who was recognized as 'a genius of place' and the investigation on the place characteristics of his representative work 'Lunuganga'. Its process was as follows; First, this study explored the characteristics of the place, Sri Lanka, which was the background of his architectures, to see its impact on his life and architecture. Second, based on his representative works of each period and the contents that he mentioned in literature, the general characteristics appearing in his architectures were identified. Third, through an analysis on the work, Lunuganga, the place characteristics appearing in his architectures were investigated. Through such process, it could be recognized that Geoffrey Bawa's architectures reveal the place characteristics as nature, place characteristic as journey and stay, and place characteristic as sense. In this study, it could be verified that place was integrated and applied to Geoffrey Bawa's architectures through the above characteristics and the spaceness was manifested. Through this, this study intended to suggest an orientation for the above problems.