LHI journal of land, housing, and urban affairs最新文献_第5页

A Study on Measurement of the Indoor Air Quality in Modular Mock-up Housing 模块化样板房室内空气质量测量方法研究

LHI journal of land, housing, and urban affairs Pub Date : 2015-10-30 DOI: 10.5804/LHIJ.2015.6.4.231

C. Chun, Jong-Yeob Kim, Jong-Dae Bang, Gap-Deug Kim

引用次数: 0

The Feasibility Analysis of Urban Public Rental Housing in Korea 韩国城市公共租赁住房的可行性分析

LHI journal of land, housing, and urban affairs Pub Date : 2015-07-30 DOI: 10.5804/LHIJ.2015.6.3.117

Ok-yeon Kim, Yong-tai Kim, Yong-Soon Kim

{"title":"The Feasibility Analysis of Urban Public Rental Housing in Korea","authors":"Ok-yeon Kim, Yong-tai Kim, Yong-Soon Kim","doi":"10.5804/LHIJ.2015.6.3.117","DOIUrl":"https://doi.org/10.5804/LHIJ.2015.6.3.117","url":null,"abstract":"Korean government has launched a new public rental housing policy for younger generation suffering from instable housing conditions in CBD area. This paper is to analyze the financial feasibility of urban public rental housing projects, based on its cash flows. Urban rental housing projects should find out the way to reduce costs and to secure cheap land, because of the high land price in CBD area and complex relationship of legal rights. Project types are categorized by the land acquisition method and district characteristics. For 10 sample projects, financial feasibility was analyzed. Cash flows were calculated on the design plan and 16 scenarios were made by combining 4 important variables. The variables are increase rate of land price, increase rate of monthly rents, ratio of public and market rents, and the interest rate of National Housing Fund. The findings are as follows. Government land rent-type can reduce initial costs because it is not necessary to buy land. However, total NPV is lowered at the time of liquidation due to the land return. Private land acquisition-type require more initial costs. But the NPV at liquidation time increases with land disposal. To improve financial feasibility, acquisition-type should be preferred in high land-price area and rent-type should be preferred in low land-price area. Among influencing variables, the rate of increase in land price and the ratio of public and market rents turned out to be the most important. Although the ratio of public and market rents can be controllable, high ratio will cause the burden of tenants. Therefore, interest rate adjustment of National Housing Fund is more desirable.","PeriodicalId":365439,"journal":{"name":"LHI journal of land, housing, and urban affairs","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115032941","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development of Hybrid OCB Beam for the Long-span Building Structures 大跨度建筑结构混合OCB梁的研制

LHI journal of land, housing, and urban affairs Pub Date : 2015-07-30 DOI: 10.5804/LHIJ.2015.6.3.129

Doo-sung Lee, Sang-Yeon Kim, Tae-Kyun Kim

引用次数: 0

Analytical Study on the Appropriateness of Design Formula and Possibility of Improving Bearing Capacity of Bored Pile 钻孔灌注桩设计公式的适用性及提高承载力的可能性分析研究

LHI journal of land, housing, and urban affairs Pub Date : 2015-07-30 DOI: 10.5804/LHIJ.2015.6.3.139

Jongbae Park, Bum-Sik Lee, Yong-Boo Park

{"title":"Analytical Study on the Appropriateness of Design Formula and Possibility of Improving Bearing Capacity of Bored Pile","authors":"Jongbae Park, Bum-Sik Lee, Yong-Boo Park","doi":"10.5804/LHIJ.2015.6.3.139","DOIUrl":"https://doi.org/10.5804/LHIJ.2015.6.3.139","url":null,"abstract":"ABSTRACT To improve the pile design efficiency(design bearing capacity⁄the strength of materials) from 70 percent(160tonf) to 80 percent(190tonf), this paper analysed the existing pile loading test data and performed the precise dynamic loading test and Bi-directional loading test for the first time in Korea. Analysis result of the existing dynamic loading test data by Davisson method showed that bearing capacity of piles penetrated at weathered rock stratum(N=50/15) exceeded 190tonf. But the analysis result by CAPWAP method showed that piles less than the target bearing capacity were 40% due to the lack of impact energy. To get the target bearing capacity from the dynamic loading test, using the hammer over 6tonf to trigger the enough impact energy is necessary. Allowable bearing capacty of Bi-directional static loading test by Davisson method was 260.0～335tonf(ave. 285.3tonf) and exceeded overwhelmingly the target capacity. And this exceeded the bearing capacity of precise dynamic loading test(ave. 202.3tonf) performed on the same piles over 40%. The difference between the capacity of Bi-directional loading test and dynamic loading test was caused by the insufficient impact energy during dynamic loading test and increase by interlocking effect by near piles during Bi-directional static loading test. Key words : Dynamic Loading Test, Davisson Method, CAPWAP, Bearing Capacity, Striking Energy, Bi-directional Loading Test","PeriodicalId":365439,"journal":{"name":"LHI journal of land, housing, and urban affairs","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123676361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Erratum : A Study on the Demand Zone of Housing for New Town: Focused on Seoul Metropolitan Area 新城市住宅需求区域研究——以首都圈为例

LHI journal of land, housing, and urban affairs Pub Date : 2015-07-30 DOI: 10.5804/LHIJ.2015.6.3.107

Jong-Lim Kim, Han-Jin Cho, Soon-Woo So

引用次数: 0

Comparative Study on the Quantity Economic Analysis of Apartment Frames Using SDS Result of Dynamic Centrifuge Test at Pile Foundation 基于SDS的公寓框架桩基动力离心试验数量经济分析对比研究

LHI journal of land, housing, and urban affairs Pub Date : 2015-07-30 DOI: 10.5804/LHIJ.2015.6.3.147

Sang-Yeon Kim, Jongbae Park, Yong-Boo Park

{"title":"Comparative Study on the Quantity Economic Analysis of Apartment Frames Using SDS Result of Dynamic Centrifuge Test at Pile Foundation","authors":"Sang-Yeon Kim, Jongbae Park, Yong-Boo Park","doi":"10.5804/LHIJ.2015.6.3.147","DOIUrl":"https://doi.org/10.5804/LHIJ.2015.6.3.147","url":null,"abstract":"ABSTRACT Site coefficient and amplification factor of current domestic Seismic Design Code based on American Seismic Code, have no consideration for the domestic ground condition in which the base rock is normally placed within 30m form the surface. By previous studies, the measured spectral acceleration of the result of dynamic centrifugal test and analysis was smaller than the design spectral acceleration for the period over 1.5 sec. Accordingly, in this study structural analysis and design using dynamic centrifugal test result for pile foundation were achieved, and the quantity of concrete and reinforcement of wall frame was compared with each other. Comparison results of cost using KBC the design spectral acceleration of SC, SD site and SDS, the quantity of reinforcement using SDS for SD site was 17~23% smaller than using the design code SD site. Key words : Pile Foundation, Dynamic Test, Site Coefficient, Design Spectral Acceleration, Cost Compare 1) 한국토지주택공사 토지주택연구원 수석연구원(주저자: sy-kim@lh.or.kr)2) 한국토지주택공사 토지주택연구원 수석연구원(교신저자: jbpark@lh.or.kr)3) 한국토지주택공사 토지주택연구원 수석연구원","PeriodicalId":365439,"journal":{"name":"LHI journal of land, housing, and urban affairs","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121575481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Seismic Performance of Special Shear Wall with the Different Hoop Reinforcement Detail and Spacing in the Boundary Element 边界单元中不同箍筋布置和间距的特殊剪力墙抗震性能研究

LHI journal of land, housing, and urban affairs Pub Date : 2015-01-30 DOI: 10.5804/LHIJ.2015.6.1.011

Young-Soo Chun

{"title":"Seismic Performance of Special Shear Wall with the Different Hoop Reinforcement Detail and Spacing in the Boundary Element","authors":"Young-Soo Chun","doi":"10.5804/LHIJ.2015.6.1.011","DOIUrl":"https://doi.org/10.5804/LHIJ.2015.6.1.011","url":null,"abstract":"(Received November 13, 2014 / Revised January 26, 2015 / Accepted January 29, 2015)i 2© A V½3\u000e$[ ¼¸ h© -C±i K© \u000f~©Uu !ds <AI a bUa -¼½ a\u001c×\u000eEg a \u001eae jr$lni A\u000e\u0014e3 a©eC±\u000e\u0014e3 ½ -o þO¼½) c©W\u001b\u0013ag\u001c j\u000fCs < × . \u0013ag , jr$\u000e\u0014e3 a\u001c $oE\u0013a < -¹µ«^ Ðo\u000e\u001a¹\u001c woE\u0013a <O \u0015 wElU !J o[¤ \u001e] , Ve3\u0011\u0011A 0 !f* \u000e\u000eCAS \u001eaeJ oU× . E , ©j o A zCU ! #Eg , ×\u000e$¼½ a\u001cW\u0019A\u0013a < (SSWR2) -loAE | inAE -I a bUa\u0013a < (SSW2) O \u0015 wE[ ¼ ¨C !' os <AS \u001eaeJ oU \u001e] , inAE © j\u000fCs <A 1.5% a -ao( zM ! f \u000eM. {Cs < z - i\u000e\u0014U `Ii Aae wo% a < !S \u001eaeaU$× . j \u001b I a bUa , lni A\u000e\u0014e3½ -¼½ a , \u000e\u0014e3½ -¼½)c , [ ¼ ¨CABSTRACTThis paper presents experimental results on detailing of boundary element transverse reinforcement, proposed to alleviate placement detailing of special shear wall experiencing difficulty in construction at the sites due to recently reinforced seismic regulations, according to the type and placement interval of transverse reinforcement. As a result of experiment, crack and destruction aspects of SSWR series specimen that employed the proposed detailing of transverse reinforcement showed similar trend as SSW series specimen that used closed hoop. Predicted maximum strength values were exceeded. Also as a result of comparing energy dissipation ability, SSWR2 specimen that follows alleviated placement detailing was found to have similar seismic performance as special shear wall SSW2 specimen based on the existing design standard. As it satisfies the deformation angle condition of 1.5% provided in the design standard, SSWR2 can be used as the main lateral force resistance element in structures.,FXPZ SE\u001bT Special Shear Wall, Hoop Reinforcement Detail in the Boundary Element, Hoop Reinforcement Spacing in the Boundary Element, Seismic Performance","PeriodicalId":365439,"journal":{"name":"LHI journal of land, housing, and urban affairs","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126048444","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

A Study of Measurement on Airtightness and Air-Flow Performance of Apartment Housing Adopting Window Frame-Type Natural Ventilation 采用窗框式自然通风的公寓住宅密闭性及气流性能测试研究

LHI journal of land, housing, and urban affairs Pub Date : 2014-10-30 DOI: 10.5804/LHIJ.2014.5.4.325

C. Chun, Gil-Tae Kim, Sun-Dong Kim

引用次数: 3

The Design Criteria of the Indoor Temperature and Humidity for the Prevent Condensation of Small Apartment Buildings 小户型建筑防结露室内温湿度设计规范

LHI journal of land, housing, and urban affairs Pub Date : 2014-10-30 DOI: 10.5804/LHIJ.2014.5.4.291

Gil-Tae Kim, Jong-yeob Kim, H. Hwang, Kyoung-Sik Kim

引用次数: 3

Housing Need and Demand Assessment: Focused on Public Housing Development Projects 房屋需求及需求评估:以公共房屋发展项目为重点

LHI journal of land, housing, and urban affairs Pub Date : 2014-10-30 DOI: 10.5804/LHIJ.2014.5.4.247

K. Ji, So-Young Lee, Yong-Soon Kim

{"title":"Housing Need and Demand Assessment: Focused on Public Housing Development Projects","authors":"K. Ji, So-Young Lee, Yong-Soon Kim","doi":"10.5804/LHIJ.2014.5.4.247","DOIUrl":"https://doi.org/10.5804/LHIJ.2014.5.4.247","url":null,"abstract":"This study proposes a new housing need and demand assessment model centering on small-scale housing development projects and happy house development projects that reflected the recent changes in rental and small sized apartment centered public housing policies and development paradigms. The housing need and demand assessment model of public housing development projects consists of quantitative evaluation factors such as potential need indicator and demand pressure indicator and qualitative evaluation factors such as local condition indicator. The potential need indicators of small sized housing development projects are calculated by subtracting the stock of already-supplied constructed rental and purchased rental housings from the potential quantity of need drawn from the small regions such as -eup, -myeon, and -dong. In the potential need indicators of happy house development projects, the potential need is calculated from those who are expected to receive a happy house in the unit of -si, -gun, and -gu. In small-sized housing development projects, demand pressure indictors are the number and the proportion of those who opened a subscription deposit, the number of those who received basic livelihood security and the number of those who were patriots and veterans. The demand pressure indicators of the happy house development projects are stock ratio of small-sized houses, rate of rise in housing rent price, level of housing rent price, and rate of monthly rent house.","PeriodicalId":365439,"journal":{"name":"LHI journal of land, housing, and urban affairs","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132662968","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1