철골트러스의 다목적 퍼지 최적화

박춘욱,손수덕,모재근,강문명 대한건축학회 1998 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.18 No.2

구조물에 대한 다목적퍼지최적화

박춘욱,편해완,강문명,Park, Choon-Wook,Pyeon, Hae-Wan,Kang, Moon-Myung 한국강구조학회 2000 韓國鋼構造學會 論文集 Vol.12 No.5

본 연구에서는 구조물의 최적설계문제를 다를 때 나타나는 퍼지성을 고려하는 동시에 대립되는 기준들을 다루기 위해 중요도를 적용 유전자알고리즘 및 퍼지이론에 의한 이산형의 다목적 함수를 갖는 트러스구조물의 최적화를 시도하는 다목적 이산화 최적화 프로그램을 개발하였다. 그리고 개발된 프로그램을 적용하여 10부재철골트러스에 대한 설계 예를 들어 비교 고찰하였다. 본 연구를 통해 평면트러스구조물에대한 응력해석 및 최적설계가 일률적으로 처리될 수 있는 통합 시스템화된 퍼지-유전자알고리즘에 의한 다목적최적 구조설계가 가능하게 되었다. 특히 일반최적설계에서 처리되지 않는 불확실한 제약조건에 대한 경우에 대하여도 피지이론을 도입함으로써 가능하게 되어 보다 구조물의 합리적인 최적설계가 가능하게 되었다. This study treats the criteria, considering the fuzziness occurred by optimization design. And we applied two weighting methods to show the relative importance of criteria. This study develops multi-objective optimization programs implementing plain stress analysis by FEM and discrete optimization design uniformaly. The developed program performs a sample design of 10-member steel truss. This study can carry over the multi-objective optimization based on total system fuzzy-genetic algorithms while performing the stress analysis and optimization design. Especially, when general optimization with unreliable constraints is cannot be solve this study can make optimization design closed to realistic with fuzzy theory.

Genetic Algorithms에 의한 입체트러스의 시스템 형상 및 단면 이산화 최적설계

박춘욱,김명선,강문명,Park, Choon Wook,Kim, Myung Sun,Kang, Moon Myung 한국강구조학회 2001 韓國鋼構造學會 論文集 Vol.13 No.5

이 연구에서는 다 셀계수변수와 다 제약조건으로 구성된 단면 및 시스템 형상을 동시에 고려하는 입체 트러스의 이산화 최적설계 문제를 유전자 알고리즘을 이용하여 체계화하였다. 또한 유전자 알고리즘의 적용방법을 초기화절차 진화적 절차 그리고 유전적 절차로 구성하였다. 초기화 절차에서는 한 세대의 개체 수만큼 염색체를 생성하고 진화적 절차는 구조해석의 결과를 분석하여 적합도를 계산하였다. 그리고 유전적 절차는 복제와 교배 및 돌연변이를 통하여 다음 세대의 유전자를 생성하게 된다. 이렇게 진화적 절차와 유전적 절차를 반복 수행하여 최적 해를 탐색한다. 이 연구에서는 설계자가 궁극적 목표로 하는 구조물의 구조 해석과 단면 및 시스템 형상 최적설계를 동시에 수행할 수 있는 이산화 최적설계 프로그램을 개발하고 설계 예를 들어 비교 고찰하였다. The objective of this study is the development of sizing and system shape discrete optime design algorithm which is based on the genetic algorithms (GAs). The algorithm can perform both size and shape optimum designs of space trusses. The developed algorithm was implemented in a computer program. The algorithm is known to be very efficient for the discrete optimization The genetic process selects the next design points based on the survivability of the current design points The evolutionary process evaluates the survivability of the design points selected from the genetic process in the genetic process of the simple genetic algorithms there are three basic operators : reproduction cross-over and mutation operators. The efficiency and validity of the developed discrete optimum design algorithm was verified by applying the algorithm to optimum design examples.

부착형 복합소재를 이용한 교육시설의 내진보강

박춘욱,송건수,박익현,김동휘,Park, Choon-Wook,Song, Geon-Su,Park, Ik-Hyun,Kim, Dong-Hwi 한국공간구조학회 2013 한국공간구조학회지 Vol.13 No.3

In paper after the strong earthquake of recently the Korea neighborhood, the Korean government survey show that the 86% of school buildings in Korea are in potential damage risk and only 14% of them are designed as earthquake-resistance buildings. Earthquake Reinforcing projects of school have been a leading by the ministry of education, however their reinforcing methods done by not proved a engineering by experiment which results in uneconomical and uneffective rehabilitation for the future earthquake. An experimental and analytical study have been conducted for the shear reinforcing method of column by axis and horizontal axis load using attaching composite beam. Based on the previous research, in this study, Design examples are given to show the performance evaluation for the column reinforcing of old school buildings using nonlinear analysis is going to be conducted and strengthening method is going to be on the market after their performance is proved by the test.

Shape-Gas에 의한 평면 및 입체 트러스의 단면 및 형상 이산화 최적설계 ( Size and Shape Discrete Optimum Design of Plane and Space Trusses using Shape-Gas )

박춘욱,여백유,강문명 대한건축학회 2001 大韓建築學會論文集 : 構造系 Vol.17 No.12

Discrete Optimum Design of Space Truss StructuresUsing Genetic Algorithms

박춘욱,강문명 대한건축학회 2002 Architectural research Vol.4 No.1

The objective of this study is the development of discrete optimum design algorithms which is based on the genetic algorithms. The developed algorithms was implemented in a computer program. For the optimum design, the objective function is the weight of space trusses structures and the constraints are stresses and displacements. This study solves the problem by introducing the genetic algorithms. The genetic algorithms consists of genetic process and evolutionary process. The genetic process selects the next design points based on the survivability of the current design points. The evolutionary process evaluates the survivability of the design points selected from the genetic process. The efficiency and validity of the developed discrete optimum design algorithms was verified by applying the algorithms to optimum design examples.

IoT 기반 다중이용시설물의 유지관리시스템 테스트베드 - 대구광역시 중심으로 -

박춘욱 대한건축학회지회연합회 2021 대한건축학회연합논문집 Vol.23 No.6

Due to the frequent occurrence of large-scale disasters such as recent earth quakes, the problem of the safety of old Public Facilities has emerged. The need to secure safety management technology through constant monitoring is increasing in an attempt to supplement old Public Facilities with weak disaster response capabilities. Traditional research is approaching the development of an existing sensor-based risk precursor information monitoring system. However, unlike this, in this study, we will focus on the development of a data analysis platform as part of the development of a continuous monitoring system that can be prepared for earth quakes, collapses, and fires, based on constantly measured data. For this reason, we have developed a safety diagnosis algorithm based on the optimal sensor attachment point and sensor data reflecting the weak characteristics of old public facilities. Using this, we have established system for maintenance and safety inspection messages and behavior manuals of public facilities.

래핑 복합플레이트를 이용한 공공시설의 내진보강

박춘욱 한국공간구조학회 2023 한국공간구조학회지 Vol.23 No.3

The purpose of this study has a purpose to evaluate shear ability, ductility and energy dissertation of specimens that is to be applied to jacket using wrapping method. The experiments was conducted as a condition that simultaneously applied axial load and transverse force. The results of experiments represent story-displacement ratio, the stiffness, energy dissertation, plastic rotation which mean seismic resistance ablity on structure. And It represents the form of crack ditribution and failure in extreme stages. Based on the results of this experiment, Design examples are given to show the performance evaluation for the column reinforcing of old school buildings using nonlinear analysis is going to be conducted. Therefore, it is possible to apply the seismic retrofit method to public facilities

GFRP 및 알루미늄으로 일체화된 복합 플레이트를 활용한 기둥래핑 내진보강

박춘욱,박익현 대한건축학회 2023 대한건축학회논문집 Vol.39 No.6

This study aims to assess the shear ability, ductility, and energy dissipation characteristics of specimens intended for jacket application,utilizing the wrapping method. The two specimens include the moment frame and the composite plate frame with a wrapping jacket. Theexperiments were conducted under the condition of simultaneous application of axial load and transverse force. The experimental results reflectvarious seismic resistance abilities of a structure, such as story-displacement ratio, stiffness, energy dissipation, and plastic rotation. Additionally, the results reveal the distribution of cracks and failures in extreme stages. 본 연구는 전단파괴가 예상되는 기둥 실험체에 구속형 보강재를 적용하여 전단능력 향상과 연성 및 에너지 소산능력을 평가하는데 목적이 있다. 이를 위해 축하중과 횡하중을 동시에 저항하면서 전단파괴가 예상되는 실험체를 제작하였으며, 구속형 복합 플레이트(Composite Plate)보강재를 적용한 실험체의 전단보강 성능을 확인하기 위하여 축하중과 동시에 횡하중을 적용한 가력실험을 수행하였다. 실험이 진행되면서 기록된 결과를 토대로 하중-변위 곡선을 작성하여 전단보강을 통한 기둥의 보강 효과를 비교·분석하였다.

복합소재를 이용한 교육시설의 기둥 내진보강공법에 관한 연구

박춘욱,이형주,주치홍,홍원화,Park, Choon-Wook,Lee, Hung-Joo,Joo, Chi-Hong,Hong, Won-Hwa 한국교육시설학회 2013 敎育施設 Vol.20 No.1

In paper after the strong earthquake of recently the Korea neighborhood, the Korean government survey show that the 86% of school buildings in Korea are in potential damage risk and only 14% of them are designed as earthquake-resistance buildings. Reinforcing projects of school have been conducting by the ministry of education, however their reinforcing methods done by not proved a engineering by experiment which results in uneconomical and uneffective rehabilitation for the future earthquake. An experimental and analytical study have been conducted for the shear and flexural reinforcing method of RC beam using composite beam. Based on the previous research, in this study, performance evaluation for the column reinforcing of old school buildings using nonlinear analysis is going to be conducted and strengthening method is going to be on the market after their performance is proved by the test.