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K. Kitagawa
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Civil Engineering, Building, Construction & Architecture Engineering Transportation

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Improvement strategy of open space at the center of a traditional lowland town with narrow paths for securing persons in need of aids viewing from evacuation time N. Mishima; Y. Taguchi; Y. Okazaki; H. Wakuya; K. Kitagawa; Y. Hayashida; Y.S. Oh; S.G. Park
Lowland Technology International Vol 17 No 3, Dec (2015)
Publisher : International Association of Lowland Technology

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Abstract

This paper aims to discuss improvement strategy of an existing open space at the center of a traditional lowland town, in which local spatial heritage including narrow paths should be preserved. We calculated evacuation times not only of normal persons but also of persons in need of aids on the assumption of street blockades in narrow paths might occur by disaster such as large earthquake also with big fire. In the study area, we thought that the weedy vacant space at the center worked as an efficient evacuation route for residents. Yet, the calculation results showed that the evacuation time of person in need of hard aids was more than we expected in the case of street blockades, although the others could. It means that it is useful to maintain the vacant space at the center in the town in order to secure evacuation without damage of the traditional meanings of the area in lowland, but that the other measurements are also necessary especially for person in need of hard aids.
Influences of Long-Term Tectonic and Geo-Climatic Effects on Geotechnical Problems of Soft Ground - Ulaanbaatar, Mongolia S. Manandhar; T. Hino; K. Kitagawa
Lowland Technology International Vol 18 No 1, June (2016)
Publisher : International Association of Lowland Technology

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Ulaanbaatar city situates in Ulaanbaatar Folded System with presence of Mongolo-Baikal seismic zone. The presence of the Tuul River Valley dissected the basin with the formation of soft sediments transported by fluvial and Aeolian environments. The presence of scattered permafrost soil due to geo-climatic condition has led to freeze-thaw phenomena by physical weathering of the ground. This study reveals the influences of long-term tectonic and geo-climatic effects have brought up geotechnical problems in the area. Further it is advised that special attention need to be given in settlement of the area associated with mechanical disintegration of the ground, characterizing similar with lowlands along the valley bottom.
Co-Authors H. Wakuya N. Mishima S. Manandhar S.G. Park T. Hino Y. Hayashida Y. Okazaki Y. Taguchi Y.S. Oh