초록 ▼

1-3-1 세부. 노후 건축물 구조재생기술 테스트베드 적용 연구
본 연구과제에서는 지속가능한 도시재생 프로젝트에서 쇠퇴도심에 존재하는 다양한 노후 건축물의 성능향상 및 재사용 기술 개발을 목표로 ① 건축물 통합성능평가 기법, ② 비파괴 지반평가 기법, ③ 건축물 개조.재활용 기술, ④ 지반 보수.보강기술, ⑤ 유지관리/모니터링 기술의 5개 중점연구 분야별로 각각 기존 기술을 체계화하고, 핵심 요소기술을 개발함으로써 거주민의 주거안전성을 확보하고 도심지 노후 환경을 개선함으로써 쇠퇴 도심의 활성화를 유도하고자 함. 또한 개발된

1-3-1 세부. 노후 건축물 구조재생기술 테스트베드 적용 연구
본 연구과제에서는 지속가능한 도시재생 프로젝트에서 쇠퇴도심에 존재하는 다양한 노후 건축물의 성능향상 및 재사용 기술 개발을 목표로 ① 건축물 통합성능평가 기법, ② 비파괴 지반평가 기법, ③ 건축물 개조.재활용 기술, ④ 지반 보수.보강기술, ⑤ 유지관리/모니터링 기술의 5개 중점연구 분야별로 각각 기존 기술을 체계화하고, 핵심 요소기술을 개발함으로써 거주민의 주거안전성을 확보하고 도심지 노후 환경을 개선함으로써 쇠퇴 도심의 활성화를 유도하고자 함. 또한 개발된 핵심기술은 체계화된 기존의 도심지 건축물 성능복원 기술과 접목되어 실용화를 위한 통합화 시스템을 구성하며, 다수의 자체테스트베드 적용 및 사업단 종합테스트베드 적용을 통하여 실용화/사업화를 구현하였음.

1-3-2 세부. 도시환경 재생기술 테스트베드 적용 연구
ㅇ 본 세부과제는 지속가능하게 발전할 수 있는 환경적으로 쾌적하고, 고효율 도시 인프라 시설을 갖춘, 안전한 재생도시 구현을 목표로, 녹색도시 조성을 위한 (1) 환경인프라 재생 기술, (2) 도시 신재생에너지 관리 기술 개발을 목적으로 함.
ㅇ 이에 따라, 지속가능한 도시재생이 가능하기 위해서는 도시재생사업단의 비전인 경제재생/환경재생/생활재생을 구체화하기 위해 “도시 인프라 요소기술의 접목을 통한 새로운 기반 시스템 (Systemization)인 그린단지시스템 (GUBS; Green Urban Block system)의 개발 (Develoment) 및 통합화 (Integration), 그리고 상용화 (Commercilization)를 본 핵심과제의 개발 비전으로 설정.
ㅇ 본 세부과제의 목표를 달성하기 위한 세세부과제들은
- 노후 건축물 구조재생 기술 테스트베드 적용 연구
- 도시 환경 재생기술 테스트베드 적용 연구
- 근린재생 지역의 탄소배출 평가체계 구축
으로 구성됨.
ㅇ 각각의 세부과제는 핵심과제의 비전에 따라 “요소기술연계성/기술혁신성/고효율성/고밀성(집적성)/재순환성(재이용성)/생태보전성/자원보전성/편리성/안전성”을 기술개발의 키워드로 함.
ㅇ 요소 및 접목기술을 도출하며 연구 진행 및 성과를 평가하는 주요 지표로 활용.
ㅇ 전체적인 연구추진체계를 사업기간별로 제시하면 아래와 같다.
① (1단계- 시스템 구축 단계: 1/2/ 차년도, 1년 개월간)
→ Virtual Construction 기술을 활용하여 일차적으로 가상공간속에서 요소 기술들을 유기적으로 접목하여 개별 시스템을 구축하고 시스템간의 통합화방안을 마련
→ 병행해서 필요한 접목기술[요소기술(間), 신구(新舊)시설 간(間), 개별 시스템 간(間)]을 파악하고, 이를 개별 시스템 구축 및 시스템간 통합화 방안에 반영
② (2단계- 시스템 현장화 단계: 4/5/6차년도, 3년간)
→ 개발된 기술 및 시스템들을 테스트베드에 적용하여 융복합적이고 실증적인 현장화를 통해 시스템개발을 완성하고 4핵심 전체 시스템의 통합화를 시도함
→ 전체 시스템의 통합화를 통해 CUIRS를 구축함
③ (3단계- 시스템 상용화 단계: 7/8차년도, 2년간)
→ CUIRS의 다양한 대상부지에 적합한 적용방법 제시(도시별, 인구별 등)
→ 해외 국가 수출을 위한 각 대륙별 적용성 검토(미국, 유럽, 아시아 등)
→ 실제 상품화를 위한 상용화 방안 마련
→ 요소기술의 통합 시스템 및 시방서, 지침서 등의 제시
ㅇ 본 세부과제의 최종 성과물은 “그린단지시스템(GUBS)을 제공하는 것으로, 각 세세부별로 연구범위를 동일하게 적용하여 단지형 구조물 성능재생 기술, 단지형 통합 그린 시스템, 단지형 복합 에너지 시스템을 제시.
ㅇ 세부적으로는 그린단지시스템 및 요소기술 매뉴얼, 통합 웹 S/W 시스템, 녹색성장 마스터플랜, 총괄 TB 기본계획, 백서, 녹서, 현장적용 설계 보고서, 사업기획보고서, 시방서 등이 성과물로 제시.

1-3-3 세부. 근린재생지구의 탄소배출 평가체계 구축
본 연구는 도시의 가장 기초단위인 근린지구 단위를 고려함으로써 재생지구 내에서 발생되는 탄소배출량을 저감시키고 해당 지역의 지속가능한 발전을 도모하기 위한 탄소배출 평가체계를 구축하고자 함
연구의 주요 목표는 근린재생지구의 탄소배출 평가체계 구축, 근린재생지구의 탄소저감을 위한 토지이용-교통 통합모형 개발 탄소저감 기술요소의 비용 대비 효율성 검토 근린재생지구의 시나리오 기반 탄소저감 계산 프로그램 개발, 탄소배출 평가체계의 현장 활용방안 예시, 탄소저감형 근린재생 활성화를 위한 지원사업 검토로 설정함

Abstract ▼

1-3-1 세부. Research on Test Bed Application for Aged Building Structure Revitalization
Ⅲ. Research development implementation and result
1. Core technology factor and research development outcome
A. Integrated automated system for existing building performance (5 year research complete)
(

1-3-1 세부. Research on Test Bed Application for Aged Building Structure Revitalization
Ⅲ. Research development implementation and result
1. Core technology factor and research development outcome
A. Integrated automated system for existing building performance (5 year research complete)
(1) The 1st Integrated performance evaluation system and guideline (plan)
■ The integrated automated system for existing building performance evaluation which is optimized through internal TB this year, basically evaluates by the building strength and transformation capability. Building durability is considered based on durability performance reduction coefficient. The first integrated performance evaluation system uses column area and wall area based on average shearing stress to evaluate flexural capacity and bearing and shear strength. When evaluated flexural, bearing and shear strength are insertea in the evaluation system，the earthquake damage scale is analyzed within short period of time. This evaluation method is a simple performance evaluation method that efficiently selects buildings which have outstanding seismic performance.
(2) The 2nd Integrated performance evaluation system and guideline (plan)
■ The second integrated performance evaluation system is a method that evaluates performance for vertical materials such as columns and walls. The evaluation method allows for analyzing locally destructed materials such as broken lot, flexural destructed materials and sheer failure materials affect. In the second evaluation, shearing and flexure destructed materials strength and modification capability are evaluated. The level of damage caused by earthquake is evaluated in the concept of ductility established per earthquake level demonstrated in strength-modification capability curve.
(3) The 3rd Integrated performance evaluation system and guideline.
■ The third integrated performance evaluation system is a method that evaluates performance for not only vertical materials such as columns and walls but also beams. The evaluation method allows for precise diagnosis which evaluates building performance through non-linear static analysis and dynamic analysis. The evaluation determined based on earthquake damage judgment regulation. Existing school buildings are used as TB to verify the developed system effectiveness.

B. Existing building remodeling and reuse technology
(1) Existing building remodeling/reuse design manual
■ Core technologies developed in this research as well as already existing technologies are used to establish a systematic manual which can be referenced by both designers and contractors. Fundamental defects are classined per structural types and appropriate reinforcement construction methods are proposed. Moreover, detailed application categories and design considerations, 3-D visualized reinforcement detail drawings and application design case studies are included in the manual to make the application and understanding easier
■ When applying seismic retrofit system for urban building remodeling and reuse, seismic retrofit design methods have been established based on the design methodology that can secure suitability and validity with the domestic structural design standard. Reinforcement design manual is developed based on multiple displacement amplification.
■ Established seismic retrofit design process and reinforcement design examples based on the currently executed KBC2009 which relies on force-based seismic design method.
(2) Crack damage control type connection filling method commercialization development.
■ When retrofitting seismic design using CIP-infilled shear walls and steel braces, effectiveness of crack damage control type connection filling method is tested for validity in order to improve the performance of adherence between existing framework and new materials.
■ Through tests that evaluates the applicability of SHCC repair materials for aged building surface degradation, efficient crack control performance and durability increase is validated.
(3) Building seismic design infrastructure technology establishment
■ Displacement amplification seismic system analysis method (standard equation of displacement amplification ß for amplification system) is proposed. Seismic retrofit effectiveness due to the use of amplification system compared to existing seismic system (story shearing force and side way reduction) is analytically verified through structure analysis based on commercialized structure analysis program.
■ Considering the non-linearity property of the seismic device is as statistical method, preparatory seismic structure design method is proposed based on the elastic analysis. The design method applied to an example structure. The preparatory design validity is confirmed by comparing and analyzing the result with the result derived from nonlinear time history analysis.
■ The objective was to confirm nonlinear analysis result limits of error by comparing and analyzing both analysis results derived from applying complete nonlinear analysis (both seismic/structure system are modeled as non-linear elements) and nonlinear analysis. It is studied that when nonUnear analysis is conducted within the allowable limit, its results would be similar to that of complete nonlinear analysis.
(4) High efficiency seismic device performance verification and seismic device evaluation method establishment.
■ Advantages such as being able to be installed in the limited areas of urban buildings and the concept of high efficiency seismic retrofit system that can maximize seismic performance h connection with displacement amplification units is established. Moreover, high efficiency seismic system displacement amplification units performance is validated through true structure tests.
■ Required items for each application phases of seismic device, fundamental performance test which draws out design property values for seismic devices types, various dependant test items that may affect product performance of seismic devices and seismic device performance evaluation techniques that propose evaluation methods are set up.
■ Seismic device required test items and evaluation method validity is verified through seismic device type test validation for the test items and methods which are deducted from seismic device performance evaluation standard.
■ Design property value deduction of high performance displacement amplification viscous damper applied to the internal test bed and design suitability is validated through tests. 5
(5) Internal test bed application of multiple displacement amplification seismic system.
■ The developed multiple displacement amplification seismic system is applied to newly constructed school buildings. Seismic procedures and methods are established for new constructions and conducted construction documents. Technical distinction between existing methods is verified through construction documents.
■ Existing building seismic retrofit design procedure and methods are established for existing non-seismic school buildings and developed multiple displacement amplification seismic system is applied in construction document.

C. Basting building non-destmctive ground evaluation method (4 year research complete)
■ Objective of this detailed part of the research is to establish technical factors for two-dimensional imaging of urban ground lower level structures. Two-dimensional imaging of urban structure foundation lower ground hardness and bed structure is developed through integrated surface investigation (JetSR) of non-destructive surface wave-resistivity.
■ Surface wave method and urban ground resistivity test methods are optimized for application of the urban settings. Additionally, non-destructive surface wave method and resistivity combined ground survey evaluation methods are developed.

D. Existing building ground maintenance and reinforcement technology
(1) Multi support micropile development
■ A series of tests using large and medium size indoor test equipment has been conducted to analyze micropile design parameter analysis. For packed concrete pile (excluding gravity grout) placed in clay ground, skin friction force increased over two times compared to previous concrete piles. This confirmation demonstrates that packed concrete pile is the only construction method that can increase the ground/pile friction force in flimsy ground.
■ Concluded on an technology implementation agreement with three construction companies that have the construction ability for multi-support micropile construction method based on the patent technology value evaluation results to prepare foundation of the commercialization.
■ Micropile construction method specification and design review is prepared to maximize the construction method effectiveness and availability.
(2) Excitation typemulti point injection development
■ Permeating injection theory engineering analysis of injection construction method and quantitative injection calculation equation provided. Engineering approach provided for permeating injection forms that modified per injection method and soil condition，and consideration for grouting design and construction are organized. Excitation typemulti-point injection construction specification prepared based on such information will maximize this construction utilization. 3
(3) Optimized ground maintenance and reinforcement method selecting program development
■ Relative importance is calculated for optimized ground maintenance and reinforcement construction method selecting program through evaluation of experts in the relative design and construction area. The program is developed for any future content edition and modification to be easy. This is to make the program as an on-going program which can continuously improve the reliability of the result. Not only design experts but also contractors and building owners may use the program to effectively select optimized maintenance and reinforcement method for building structure lower area. It is expected that the reduced effort and frequent design changes will lead to minimized economical loss.

E. Existing structure monitoring and maintenance management technology development (4year research complete)
(1) Performance monitoring and maintenance management technology objective establishment.
■ The building inherent vibration frequency and vibration mode are extracted through low vibration measurement after domestic and international maintenance management technology case studies are studied and analyzed. Method which extracts the actual building dynamic properties is selected as the standard measurement technology.
(2) System discern method survey and intermediate to low story system discern SW development.
■ Each property is compared and analyzed through previous system discern method survey.
■ Based on such, core technology development direction is established for intermediate and low story building condition evaluation and system discern SW is developed.
(3) Low vibration measurement module
■ The measurement method of amplifying low vibration using low vibration measurement algorithm is applied to implement the evaluation. As a result，intermediate and low story building SI method application is made easy and measurement time has been reduced. Moreover, the entire integrated system establishment is considered to be simplified. Based on the application result, a patent has been applied (“Active sensor module which has Self Feedback Loop for Measurement of Structure Low Vibration”).
(4) Wireless measurement system
■ By integrating fundamental elements，wireless measurement system and low vibration measurement module, required for optimized monitoring by creating USN foundation phase，sensor network，site applicability can be increased. Wireless measurement system infrastructure which can effectively measure data without hindering other performance evaluation prior to construction and construction process during construction is established.


2. Internal Test-bed design applying the integrated core technology
■ Existing building seismic performance is evaluated for three story public buildings which can be easily spotted in deteriorating cities undergoing one story expansion. Technical distinction is validated through construction design execution and structure analysis which have applied existing and the developed upper/lower level structure core reinforcement technology for lacking structural performance.
■ When retrofitting seismic design, existing retrofitting methods (sheer wall construction) require additional foundation and ground reinforcement. When multi micropile developed in this research is applied, the consumed length maybe reduced up to 15%.
■ By executing construction design for selected buildings, displacement amplification seismic system developed in this research may improve the structure stability to the level where the buildings are not damaged at the time of earthquake compared to existing retrofitting methods. Additional foundation and ground reinforcement is required.
■ The result of cost analysis based on construction designs per reinforcement method type for selected buildings, the reinforcement method developed in this research reduces construction cost for both upper level and ground reinforcement compared to existing reinforcement methods. Especially, the seismic retrofitting method does not require foundation/ground reinforcement and has advantages of constructionability improvement and continuous allowance of building use during construction. Additionally, the construction method is economic as there is no or little maintenance management cost needed.


1-3-2 세부. 도시환경 재생기술 테스트베드 적용 연구
○ This research project is help upon a principal mission to develop a sustainable city that is environmentally friendly, equipped with high efficiency urban infrastructures, and securely regenerated. Main objective of the project is to develop (1) regeneration technologies of environmental infrastructures and (2) management technologies of urban renewable energies for green growth.
○ Hence, to enable sustainable urban regeneration and to materialize UIRRC (Urban Infrastructure Regeneration Research Center)'s primary visions: economic/environmental/life regeneration, the development theme of the project is selected as development, integration, and commercialization of GUBS (Green Urban Block System), a new integrated system of urban infrastructure technologies.
○ Sub-projects of the main are
- TB application research of urban environmental regeneration technology
- Establishment of evaluation system of carbon emission in neighboring regenerating areas
○ Each sub-project, depending on its vision, is based upon key words, "connectivity among elementary technologies / technological innocation / high efficiency / high density (compactness) / recycling (reusing) / ecosystem conservation / resource conservation / convenience / safety"
○ Derive elements and applied technologies to use as evaluation indices for research process and results.
○ General research promotion system according to business periods is as follows:
follows:
① (Step 1- System Development: 1/2/3rd, for 1 year and 8 months)
→ By using virtual construction technology, establish a separate system that organically integrates elementary technologies and promote connectivity between the systems.
→ Recognize necessary transitional technologies between elementary technologies, old and new technologies, and individual systems and reflect them to general system integration.
② (Step 2- Field Application of the System: 4/5/6th, for 3 years)
→ By applying developed technologies and systems to test beds, finalize the system development and attempt the integration of 4 major systems.
→ Establish CUIRS through integration of entire systems.
③ (Step 3- Commercialization of the System: 7/8th, for 2 years)
→ Suggest various appropriate application methods of CUIRS depending on site characteristics (city, population, etc.)
→ Examine international applicability of the system (America, Europe, Asia, etc.)
→ Develop a commercializing plan of the system.
→ Provide specifications of the integrated systems and suggest guidelines and manuals.
○ Final result of the project is to provide GUBS by allowing the same research range for each sub-projects and to suggest regeneration technologies of integrated green block system and integrated complex energy system.
○ In details, to provide the manual of GUBS and its elementary technologies, integrated Web S/W system, green growth master plan, integrated fundamental TB plan, white paper green paper field application design report, bussiness plan report system specifications, etc.


1-3-3 세부. 근린재생지구의 탄소배출 평가체계 구축
As the paradigm of low-carbon green growth was considered to overcome the climate change, the necessity of urban spatial strategy in accord with that has been gradual I y increased and the government set up a goal to reduce carbon emission by 30% until 2020.
However, the study on the reduction of green-house gases mostly focused on the local government and new town and the study of the built-up area in decreasing prosperity has been insufficient relatively, so, it is very urgent to study urban regeneration based on low-carbon green growth.
The subject of this study for establishing of the carbon emissions evaluation system can be classified five part as followings;
- Subject 1 : Establish an evaluation system of carbon emissions in the neighborhood regeneration district.
- Subject 2 : Development of integrated model f아 Land-use and t ansp아tat ion.
- Subject 3 : Cost-efficiency review of low-carbon technical elements.
- Subject 4 : Application examples of the carbon emissions evaluation system.
- Subject 5 : Development of carbon reduction calculation program based on scenarios of neighb아hood regeneration district.
- Subject 6 : Review of support project for Low-carbon neighborhood regeneration.
The key points of this study are as below.
- Subject 1 : Calculating basic unit for carbon emission elements. Elemental technologies for carbon reduction, Main technique elements, etc.
- Subject 2 : Development of Toy-network organization and scenario, Application of the car bon reduction model, etc.
- Subject 3 : Cost-efficiency review for low-carbon technical elements, link planning for carbon reduction technique, Economic feasibility of Main element sectors, etc.
- Subject 4 : Application of the carbon reduction scenario. Concept of the Neighborhood regeneration, Scenario setting for carbon reduction, Comparing Carbon emission quantity between each scenarios, etc.
- Subject 5 : Calculating carbon emission quantity, applying carbon reduction technical elemnts, output of carbon reduction information, etc.
- Subject 6 : Reviewing support project of each carbon emission sectors, Support measures for the activation of neighborhood regeneration, etc.
Consequently, by providing information over establishkig evaluation system for reducing green-house gases and methods for green regeneration, this study cab contributes to promote urban regeneration project.