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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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LHI Journal of Land, Housing, and Urban Affairs
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Journal DOI :
Land and Housing Institute
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Volume & Issues
Volume 2, Issue 4 - Oct 2011
Volume 2, Issue 3 - Jul 2011
Volume 2, Issue 2 - Apr 2011
Volume 2, Issue 1 - Jan 2011
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A Study on the Introduction of Urban Agriculture to Permanently Rental Apartment Complexes
Yoon, Eun-Joo ; Yoon, Young-Ho ;
LHI Journal of Land, Housing, and Urban Affairs , volume 2, issue 2, 2011, Pages 93~99
DOI : 10.5804/LHIJ.2011.2.2.093
Urban agriculture is drawing people`s attention along with environmental problems and recent changes in population and society such as the expansion of the aged, and various related discussions are going on for expanding the base. The purpose of this study was to suggest the application of urban agriculture in the permanently rental apartment complex to build a social welfare. Aiming at the introduction of urban agriculture in permanently rental apartment complexes, this study presented the roles and necessities of urban agriculture in response to environmental changes at home and overseas, explained the current state of permanently leased apartment complexes, estimated the land area usable for urban agriculture in existing complexes, and proposed strategies for the introduction of urban agriculture.
U-City Service Classification Standard & Cost Sharing Plan through the Case Studies of U-City Construction
Yun, Jeong-Ran ; Lee, Sang-Hun ; Yang, Dong-Suk ;
LHI Journal of Land, Housing, and Urban Affairs , volume 2, issue 2, 2011, Pages 101~109
DOI : 10.5804/LHIJ.2011.2.2.101
Recently, the construction of U-City or of U-City service (U-service) in many kinds of urban development projects becomes the general trend. However, as the construction of U-city comes into the spotlight like the trend of the times, various service constructions are being indiscreetly implemented since it`s processed focusing on local specialized projects or local landmark project by a local autonomous entity or an institute in charge being off the original purpose of the improvement of living quality of residents and the efficiency of urban management, which causes a number of problems on the process, maintenance, operation and management of those projects. Therefore, this study is to derive the standard pattern of U-service construction through the analysis of patterns and numbers of U-service and problems during the process of construction in domestic U-City construction case district, and is aimed to suggest the reasonable direction of service construction based on this. 11 projects areas in which data related to U-service are available among U-City construction project areas were selected for the subjects of this study, and it`s standardized with 228 detailed unit services that were suggested by U-Eco City R&D and with 11 service domains that are regulated in "the Act of ubiquitous city construction etc.", and it is limited to services that were suggested in U-City case area of which design was completed by July, 2010 based on this. The actual state of various U-service construction is analyzed through case studies as well as reviews on the legal and theoretical concept and the method of pattern classification of U-service, the plan for the standardization (pattern classification) of U-service and the plan for the construction body of service and to share the costs are suggested as the plan to construct reasonable U-service based on this for the method and the procedure of this study For the method to construct U-service, the plan to classify the pattern of U-service into the basic service and additional service is suggested, and whether it has the publicity, whether urban infrastructure is included, whether utilities are included, the body of realization, the recipients, the urgency, the importance and the spreading, etc. are suggested for the index to determine the pattern of service. The method to get the executor of a project to construct the basic service, the method to get the executor of a project to construct the most basic service among the group classification of service and to get a private entity and a local autonomous entity to perform additional service in the future, and the method to construct the whole service and to distribute the construction costs were suggested, and the first one that determines the body of construction after dividing U-service into the basic service and the additional service was evaluated to be the most reasonable one. And the plan to solve the problem that the excessive construction costs of U-service are shifted onto the executor of a project through benefit principle, balanced distribution principle and consultation and mediation between the interested parties was suggested for the criteria to share the costs.
Development of Indicators to Assess the Quality of Ubiquitous-Ecological Cities
Kim, Han-Saem ; Jeong, Yeun-Woo ;
LHI Journal of Land, Housing, and Urban Affairs , volume 2, issue 2, 2011, Pages 111~123
DOI : 10.5804/LHIJ.2011.2.2.111
A Ubiquitous-Ecological City (U-Eco City) is the new urban paradigm integrated with ubiquitous-city (U-City) connecting the high-tech IT technology to the urvan space with the concept of the sustainable eco-city. As a U-Eco City is attempted for the first time domestically and internationally, there is insufficient discussions for its develoment goal, planned design proposal, technology and service element and others. Even if there are plans to build up it, policy and technology, service structuring business and others, it is difficult to assess how it would bring the efficacy. Therefore, the purpose of this study is to present the indicators system to assess a U-Eco City. The results of this study revealed the following; First, the conceptual framework, which was established to achieve sustainable urban quality, can be suggested by establishing its notion of the U-Eco City. The concept of a U-Eco City as established in this study suggests that the economic development in growth-oriented level has to be conducted not only quality of urban environment but also in terms of sustainable to consider the complex impact of various development; Secondly, the developed assessment system has heightened the completeness as the evaluation index through the attitude survey. As a result of questionnaire survey with the subject of specialists and interested party of this study, the urban qualitative aspect is formulated for the stability as a relatively important aspect. For the urban continuity aspect, society, environment and economy have all similar importance, but the environment element was shown to be highest. And finally, subject area was selected on the basis of the evaluation system and the analysis was made on the basis of the implementation design plan of the area. As a result of the assessment, safety and economy have shown to be high. This is indirectly indicated for the priority in economic growth driven development plan unlike the importance of environmental continuity obtained through the attitude survey. When planning on urban development, there is a need for supplementing the environment part and it has to present the connection plan between the economic growth and environmental continuity.
An Assessment on the Possibilities to Promote Bicycle Use and a Research on its Determining Factors
Shin, Hee-Cheol ; Kim, Dong-Jun ; Jeong, Seong-Yub ; Moon, Jang-Won ;
LHI Journal of Land, Housing, and Urban Affairs , volume 2, issue 2, 2011, Pages 125~135
DOI : 10.5804/LHIJ.2011.2.2.125
Automobile-oriented urban transport system, continued from the past in Korea, is giving rise to inefficiency and social costs in transport sector. With revitalizing usage of bicycle, human-powered transport mode, it is possible to enhance sustainable green growth, improvement of the city-competitiveness, and the quality of life. In this study, the possibility of bicycle usage promotion in Korean cities is examined at 7 points of views. As a result, though the bicycle usage is low now, we figured that there are many positive signs to increase bicycle usage in Korea. Also, we draw a diverse key policies for building green urban transport system that bicycle have a most important role on transport system. So policies to promote bicycle usage are reviewed to analyze on bicycle-oriented 5 cities, in which have high bicycle mode share. By this review, this study could draw 41 key effective policies to 3 aspects (bicycle infrastructure, safety and promotion, and policy sustainability). In addition to, importance of 21 key effective policies about bicycle infrastructure is suggested as considering city`s characteristics.
Diversification of Urban Regeneration Projects by Regional Characteristics
Cho, Seung-Yeoun ; Chun, Ji-Young ;
LHI Journal of Land, Housing, and Urban Affairs , volume 2, issue 2, 2011, Pages 137~143
DOI : 10.5804/LHIJ.2011.2.2.137
This study focused on urban regeneration projects to diversify projects methods. Since the enactment of legal redevelopment projects, they were concentrated on improving the physical environment and supplying housings. In this article, 12 cities` urban regeneration policies and projects will be examined to point out the characteristics of each regions via documentary studies and interview investigations. They could be divided into 3 groups by population and region. Finally, this article is intended to propose diversified regeneration methods depending on the regions and to address implications on the regeneration policies.
Estimating the Soil Volume Conversion Factor of Weathered Ground with Consideration of Field Situations
Jin, Kyu-Nam ; Cho, Gye-Chun ; Lee, Jung-Min ; Ryu, Hee-Hwan ; Park, Sung-Wook ;
LHI Journal of Land, Housing, and Urban Affairs , volume 2, issue 2, 2011, Pages 145~155
DOI : 10.5804/LHIJ.2011.2.2.145
It is very important for successful construction to estimate the soil volume conversion factor of domestic weathered ground accurately and reasonably. However, it is very difficult to quantify the weathering degree of weathered ground at the field, so that the soil volume conversion factor used in Korea is often dependent upon the standard of foreign countries. Besides, the soil volume conversion factor of domestic weathered ground has been rarely studied and the use and accuracy of the soil volume conversion factor have been questioned persistingly. This study suggests a simple but robust method for estimating the soil volume conversion factor and measuring the weathering degree reasonably, and attempts to establish the utilization of a soil volume conversion factor measurement system based on experimental and analytical results. We made relationship between electrical resistivity and weathering degree presented from weathering index obtained through laboratory tests using field samples, and an estimation method of in-situ weathering degree for granites and a calculation method of soil volume conversion factor using electrical resistivity. And also, we suggested the photogrametry measurement-equipment system for measuring the volume of cargo box and the application plan of stand equipment and RFID for calculating the earth volume and distinguishing buggies in order to design the measurement system for soil volume conversion factor applicable to the field. Ultimately, the Weathered Earth-work Management Program (WEMP) was developed, so field managers may easily obtain the information about earth volume and soil volume conversion factor at the weathered ground.
Landslide characteristics for Hoengseong area in 2006
Yoo, Nam-Jae ; Choi, Joon-Sik ;
LHI Journal of Land, Housing, and Urban Affairs , volume 2, issue 2, 2011, Pages 157~162
DOI : 10.5804/LHIJ.2011.2.2.157
This paper presents the landslide characteristics occurred in Hoengseong, Gangwondo and around July 16 in 2006, caused by heavy rainfall and antecedent precipitation by two typhoons of Ewiniar and Bilis. The main causes of landslides were antecedent precipitation between July 12 to 13, resulting in weakening grounds by increasing the degree of saturation previously, and the additional heavy rainfall between July 15 to 16. Most of landslides at natural slopes were transitional failures occurred along the boundary between residual weathered soil in shallow depth and hard mother rock. From the results of conclusive analyses for 100 sites in Hoengseong region where landslides occurred, the slope length of landslide and slope width were less than 100m with 87% of frequency and 30m with 74% of frequency, respectively. The average value of slope angles was
Determination of Optimum Stepped Vacuum Pressure and Settlement for IVPM-applied Ground
Yoon, Myung-Seok ; Ahn, Dong-Wook ; Park, Jea-Man ; Kim, Soo-Sam ;
LHI Journal of Land, Housing, and Urban Affairs , volume 2, issue 2, 2011, Pages 163~170
DOI : 10.5804/LHIJ.2011.2.2.163
Individual Vacuum Pressure Method (IVPM) is a soft ground improvement technique, in which a vacuum pressure can be directly applied to the vertical drain board to promote consolidation and to strengthen the soft ground. This method does not require surcharge loads, different to embankment or pre-loading method. In this study, the ground improvement efficiency of Individual Vacuum Pressure Method was estimated when suction pressure increases step by step(-20, -40, -60, -80kPa) with different periods. During Individual Vacuum Pressure Method process, surface settlement and pore pressure were monitored, and cone resistance as well as water content were also measured after the completion of Individual Vacuum Pressure Method treatment. From the results, optimum duration of each step of vacuum pressure was determined, and the settlement was calculated using FEM numerical analysis.
An Extensive View on the Highway Network in North Korea and the Determination of Investment Priority Using AHP Analysis
Man, Seol-Young ; Cho, Yun-Ho ;
LHI Journal of Land, Housing, and Urban Affairs , volume 2, issue 2, 2011, Pages 171~182
DOI : 10.5804/LHIJ.2011.2.2.171
Current state of population, the existing roads, and the function of roads and highways of North Korea have been reviewed in this paper. In addition, the `Five by five` road network has proposed for North-South and East-West directions to be connected with the road network of South Korea, China, and Asian Highways. Furthermore, the evaluation criteria and weighted values have suggested to determine the investment priority of highway based on the survey results from expert group members using AHP analysis method. Throughout the analysis, the ranking of the investment priority has been decided for the North-South axis and East-West axis. The second North-South axis (Geasung-Pyungyang-Anju-China) has been ranked as the first priority for the North-South axis followed by the fifth North-South axis as the second, the first axis as the third, the third axis as the fourth and the fourth axis as the last priority. For the East-West axis, the second East-West axis(Nampo-Pyungyang-Wonsan) has been ranked as the first priority followed by the first axis as the second, the third axis as the third, the fourth axis as the fourth and the fifth East-West axis as the last priority.
Load Bearing Capacity Evaluation of New Lattice Girder by Laboratory Test
Choi, Young-Nam ; Jang, Yeon-Soo ; Kim, Dong-Gyu ; Bae, Gyu-Jin ;
LHI Journal of Land, Housing, and Urban Affairs , volume 2, issue 2, 2011, Pages 183~188
DOI : 10.5804/LHIJ.2011.2.2.183
Recently, the depth of tunnel constructed is getting deeper, which increases difficulty in construction works. Deliberate tunneling techniques are needed as the span and length of tunnels are increased. As one of the technical developments for tunnel, U-shaped and reinforced spider lattice girders are developed by optimizing the spider used in 95mm lattice girder as tunnel steel ribs. In order to evaluate the load bearing capacity of the lattice girder, the 4-point flexural tests are carried out. For the laboratory tests, straight specimens are made for the existing lattice girder and the new lattice girder. The results of the flexural tests showed that the maximum load bearing capacity of the new lattice girders was higher than the traditional one. The load-displacement behavior of the test specimens showed the elasto-plastic behavior in the existing lattice girder and the stress softening behavior in the new lattice girder. It was found that the load bearing capacities are changed depending on the location of the loading points.
A Study on Displacement Effect of Different Foundation using Concrete and Rubble
Lim, Hae-Sik ; Park, Yong-Boo ;
LHI Journal of Land, Housing, and Urban Affairs , volume 2, issue 2, 2011, Pages 189~194
DOI : 10.5804/LHIJ.2011.2.2.189
To reinforce bearing capacity-changed section or different foundation in the same building, empirical or simple tools have been used. To solve this problem, we suggest the analytical solution that can evaluate and reinforce the stability of foundation. To estimate the effect of reinforcement by replacement in different foundation, soil stiffness evaluation method taking into account the influence factor with respect to depth beneath the foundation need to be applied. In this paper, graphs and relevant formulae are suggested to calculate equivalent soil reaction coefficient showing the effect of reinforcement by crushed stone and lean concrete replacement.
Technique to Evaluate Safety and Loaded Heavy Equipment Grade in RC Building during Demolition Work
Park, Seong-Sik ; Lee, Bum-Sik ; Kim, Hyo-Jin ; Sohn, Chang-Hak ;
LHI Journal of Land, Housing, and Urban Affairs , volume 2, issue 2, 2011, Pages 195~204
DOI : 10.5804/LHIJ.2011.2.2.195
During mechanical demolition of RC structures, weights of dismantling equipment and demolition waste of building are applied to unexpected load which did not be considered during the design of structural member. Nevertheless, the loading of dismantling equipment and dismantling process are mainly dependent on field managers` field workers` or experiences without considering safety of structural member by a structural engineer. It is urgently required that reflecting actual circumstance of mechanical demolition, safety evaluation method to evaluate the safety and the guideline for appropriate capacity of structural member to support dismantling equipment weight, be provided. Through site investigation and questionnaire on field workers, this paper proposed demolition waste load, load factor, strength reduction factor, and so on. These are essential to safe evaluation of a building, ready to demolition. Considering actual circumstance of mechanical demolition, safety evaluation method of building and design method of slab and beam was suggested to a dilapidated building. An capability to loading of dismantling equipment was proposed, applied to RC slab and RC beam. Therefore, the suggested safety evaluation method and the guideline for an capability to loading of dismantling equipment weight can reasonably evaluate the capacity of structural member in demolition and use effectively as increasing efficiency and improving safety of demolition through proper management of dismantling equipments.