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| 2017 論文集
1. 矩 形建物に取り付く大庇基部に作用する風力の特性に及ぼす建物高さの影響 畠 山智貴，佐藤公亮，植松 康 日 本建築学会東北支部研究報告集構造系，第80号，pp.53-58，2017.6 Effect of the Building Height on Wind Forces Characteristics Acting on Large-Scale Canopy Attached to Rectangular Buildings Tomoki HATAKEYAMA, Kosuke SATO, Yasushi UEMATSU Proceedings of AIJ Tohoku Chapter Architectural Research Meeting, No.80, pp.53-58, 2017.6
2. Wind Force Coefficients for H.P.‐Shaped Solid and Porous Canopy Roofs Yasushi UEMATSU, Yukari MIYAMOTO, Eri GAVANSKI Proceedings of the 7th European and African Conference on Wind Engineering(EACWE 2017), Liege, Belgium, July 4-7 2017
ABSTRACT: Wind loading on an H.P. (hyperbolic paraboloid) free roof is investigated based on a wind tunnel experiment, in which both solid and porous models are used. The parameters under consideration are the rise to span ratio and the porosity of the roof. The overall aerodynamic forces and moments are measured by a six-component force balance in a turbulent boundary layer. First, the wind force coefficients for designing the main wind force resisting systems are discussed based on a combination of the lift and aerodynamic moment coefficients. The design wind force coefficients, CNW * and CNL *, on the windward and leeward halves of the roof are proposed. Focus is on the column axial forces induced by wind loading as the load effect for discussing the design wind loads, assuming that the roof is rigid and supported by four corner columns. Indeed, two pairs of CNW * and CNL *, generating the maximum tension and compression in the columns, are provided for each of the two wind directions parallel to the roof’s diagonal lines. Next, a discussion is made of the effect of porosity on the wind force coefficients based on a wind tunnel experiment with porous models that have a number of small circular holes. The results indicate that the porosity significantly reduces the wind loads. The design wind force coefficients for porous canopy roofs are provided by those for the solid roofs with the same configuration multiplied by a reduction factor. The proposed wind force coefficients are verified by a comparison of the load effect predicted by the proposed wind force coefficients with the maximum load effect obtained from dynamic analyses using the time history of aerodynamic force and moment coefficients.
3. Quantitative Relationship between Surface Roughness Parameters Obtained from Building Information Database and Wind Turbulence Near Ground Surface Ryoji SASAKI, Yasushi UEMATSU Proceedings of the 7th European and African Conference on Wind Engineering(EACWE 2017), Liege, Belgium, July 4-7 2017
ABSTRACT: In the design of low-rise and middle-rise buildings, accurate evaluation of the design wind loads both on the main wind force resisting systems and the cladding/components is very important. For this reason, it is necessary to understand the characteristics of natural winds, which are influenced by surface roughness such as buildings, near the ground surface. With the ultimate objective of developing an evaluation method for wind turbulence near the ground surface by using a building information database, this paper proposes a method for estimating wind turbulence based on the results of field measurements and wind tunnel experiments. The vertical profiles of gust factor and turbulence intensity corresponding to a given surface roughness are presented. The turbulence intensity at any arbitrary height can be evaluated from the surface roughness parameters information defined in this study.
4. 積 雪寒冷地における木造住宅の強風被害予測モデルに関する研究 吉 田早智子，今野大輔，ガヴァンスキ江梨， 植松 康 日 本風工学会論文集，第42巻第3号 （通号第152 号），pp.89-99，2017.7 Development of a Stochastic Model for Predicting Wind-induced Damage to Wooden Houses in Snowy Cold Regions Sachiko YOSHIDA, Daisuke KONNO, Eri GAVANSKI, Yasushi UEMATSU Journal of Wind Engineering, JAWE Vol.42, No.3 (No.152), pp.89-99, 2017.7
SUMMARY: A stochastic model for predicting wind-induced damage to wooden houses in snowy cold region has been developed, focusing on roofs. The model consists of ‘wind loading model’ and ‘wind resistance model’. These models consider the regional features of the structures and the aged deterioration of the roofing. The evaluation methods of the wind resistant performance and the wind load acting on the roofing are based on the building code and previous studies. Furthermore, pulling-up load test was carried out to evaluate the wind-resistant performance of roof frame joints. It is found that the materials and construction of roofs commonly used in snowy cold regions tend to cause much wind damage to roofing and roof structures. The results of a probabilistic analysis of the damage indicate that damage to roofs can be reduced significantly by appropriate maintenance.
5. 窓 ガラスの耐風性能に対するガラスの支持条件と形状の影響に関する研究 今 野大輔，ガヴァンスキ江梨，植松 康 日 本風工学会論文集，第42巻 第3号 （通号第152号），pp.100-110，2017.7 Effects of Support Condition and Dimension of Glass Plates on the Wind Load Resistance Daisuke Konno, Eri Gavanski, Yasushi Uematsu Journal of Wind Engineering, JAWE Vol.42, No.3 (No.152), pp. 100-110, 2017.7
SUMMARY: The effects of support condition and dimension of glass plate on the wind load resistance are investigated by performing full-scale breakage tests and numerical simulation that can predict glass failure pressures. Full-scale breakage tests were carried out using window specimens whose edges were supported as used in practice, called “elastic support condition”, in order to investigate the application of the existing numerical simulation to such a support condition. The results indicate that the numerical simulation can capture the load resistance obtained from the full-scale breakage tests by adjusting the parameters related to the material properties and testing environment, especially relative humidity. By using the numerical simulation, the examination of the effects of support condition and dimension glass plate, and the comparisons with the Japanese and USA design codes are performed. The results show that the support condition of glass plates affect slightly on the wind load resistance. On the other hand, the load resistance depends on size and aspect ratio more significantly than expected in the Japanese code. Therefore, it is found that the Japanese code seems to overestimate the wind resistance of glass plates because it does not reflect the effects of size and aspect ratio of glass plate, which are considered in the USA code.
6. 機 械的固定工法による防水システムの実変動風圧下での動的挙動に関する研究 杉 山進伍，植松 康，臼倉拓人，小野克也 日本建築学会大会学術講演梗概集(中国)，材 料施工，pp.835-836，2017.8 Dynamic Behavior of Mechanically‐Attached Waterproofing Systems under Realistic Wind Loading Shingo SUGIYAMA, Yasushi UEMATSU, Takuto USUKURA, Katsuya ONO Summaries of Technical Papers of Annual Meeting Architectural Institute of Japan, Material and Contraction, pp. 835-836, 2017.8
7. 秋 田県にある木造住宅の屋根部の構法変遷に関する研究 吉 田早智子，植松 康，佐藤公亮，ガヴァンスキ江梨 日本建築学会大会学術講演梗概集(中国)，材 料施工，pp.1053-1054，2017.8 A Study on the Changers of the Roof of Wooden House in Akita Prefecture Sachiko YOSHIDA, Yasushi UEMATSU, Kosuke SATO, Eri Gavanski Summaries of Technical Papers of Annual Meeting Architectural Institute of Japan, Material and Contraction, pp. 1053-1054, 2017.8
8. L型屋上広告板に作用 する生のピーク風力計数 益 山由佳，中村 修，植松 康，奥田泰雄 日本建築学会大会学術講演梗概集(中国)，構 造Ⅰ，pp.61-62，2017.8 Positive Peak Wind Force Coefficients for L-Shaped Signboards Installed on rooftop of buildings Yuka MASUYAMA, Osamu NAKAMURA, Yasushi UEMATSU, Yasuo OKUDA Summaries of Technical Papers of Annual Meeting Architectural Institute of Japan, Structure I, pp. 61-62, 2017.8
9. 大スパン陸屋根構造物の屋 根面に作用する風圧と流れ場 髙舘祐貴，植 松 康 日本建築学会大会学術講演梗概集(中国)，構 造Ⅰ，pp.109-110，2017.8 Wind Pressures and Flow Patterns on a Large Span Flat Roof Yuki Takadate, Yasushi Uematsu Summaries of Technical Papers of Annual Meeting Architectural Institute of Japan, Structure I, pp. 109-110, 2017.8 10. 大 庇基部に作用する風力の特性に及ぼす矩形建物規模の影響 畠 山智貴，奥田泰雄，佐藤公亮，植松 康 日本建築学会大会学術講演梗概集(中国)，構 造Ⅰ，pp.111-112，2017.8 Effect of the Building Scale on Wind Forces Characteristics Acting on Large-Scale Canopy Attached to Rectangular Buildings Tomoki HATAKEYAMA, Yasuo OKUDA, Kosuke SATO, Yasushi UEMATSU Summaries of Technical Papers of Annual Meeting Architectural Institute of Japan, Structure I, pp. 111-112, 2017.8
11. 翼 型園芸用鉄骨ハウスの側面開口システムによる風力低減効果に関する研究 真 崎智亮，金 南昔，植 松 康 日本建築学会大会学術講演梗概集(中国)，構 造Ⅰ，pp.113-114，2017.8 Study of Wind Force Reduction of a new Steel Greenhouse by Controlling internal pressure Tomoaki MAZAKI, Namseok KIM, Yasushi UEMATSU Summaries of Technical Papers of Annual Meeting Architectural Institute of Japan, Structure I, pp. 113-114, 2017.8
12. 円 筒型独立上屋の風荷重評価に関する研究 山 村朗丸，植松 康 日本建築学会大会学術講演梗概集(中国)，構 造Ⅰ，pp.127-128，2017.8 Wind Loads on Cylindrical Free-Standing Canopy Roofs Roma YAMAMURA, Yasushi Uematsu Summaries of Technical Papers of Annual Meeting Architectural Institute of Japan, Structure I, pp. 127-128, 2017.8
13. 通気工法外壁システムの等 圧効果を考慮した風荷重評価方法の検討 渡部 慶，植松 康，ガ ヴァンスキ江梨 日本建築学会大会学術講演梗概集(中国)，構 造Ⅰ，pp.131-132，2017.8 Evaluation of Wind Load on Ventilated Exterior Wall Systems Considering Pressure Equalization Kei WATANABE, Yasushi UEMATSU, Eri Gavanski Summaries of Technical Papers of Annual Meeting Architectural Institute of Japan, Structure I, pp. 131-132, 2017.8
14. 強 風災害時の建物破壊過程を考慮したリスク評価手法の開発 そ の２ 瞬間的な開口開放時の内圧上昇に及ぼす開口面積と風速の影響 今 野大輔・植松 康，ガ ヴァンスキ江梨 日本建築学会大会学術講演梗概集(中国)，構 造Ⅰ，pp.133-134，2017.8 Development of wind-damage risk evaluation method considering the failure processes Part 2. Wind-Tunnel Experiment on the Effect of Opening Size and Wind Speed on internal pressure Daisuke KONNO, Yasushi UEMATSU, Eri Gavanski Summaries of Technical Papers of Annual Meeting Architectural Institute of Japan, Structure I, pp. 133-134, 2017.8
15. ダ ウンバーストの移動速度が流れ場へ及ぼす影響 飯田有未，植 松 康 日本建築学会大会学術講演梗概集(中国)，構 造Ⅰ，pp.141-142，2017.8 The Effect of the Moving Feature of Downburst on Wind Flow field Near Ground Yumi IIDA, Yasushi UEMATSU Summaries of Technical Papers of Annual Meeting Architectural Institute of Japan, Structure I, pp. 141-142, 2017.8
16. 移 動を伴うダウンバーストが建築物の風荷重に与える影響に関する研究 浅野和則，飯田有未，植 松 康 日本建築学会大会学術講演梗概集(中国)，構 造Ⅰ，pp.143-144，2017.8 Wind Load on a Building Induced by a Moving Downburst Kazunori ASANO, Yumi IIDA, Yasushi UEMATSU Summaries of Technical Papers of Annual Meeting Architectural Institute of Japan, Structure I, pp. 143-144, 2017.8
17. 超 高層建物を有する都市域における風観測結果とアンケート調査結果の関係 そ の1 調査および検討の概要 赤 星明紀， 猿川 明，佐々 木亮治，中 村 修，宮 下康一，植 松 康 日本建築学会大会学術講演梗概集(中国)，構 造Ⅰ，pp.151-152，2017.8 A Relation between the Wind Observation Data and the Results of Questionnaire Survey at an Urban Area where Skyscrapers are Built. Part 1 An Overview of the Survey and the study Akinori AKAHOSHI, Akira SARUKAWA, Ryoji SASAKI, Osamu NAKAMURA, Koichi MIYASHITA, Yasushi UEMATSU Summaries of Technical Papers of Annual Meeting Architectural Institute of Japan, Structure I, pp. 151-152, 2017.8
18. 太 陽電池モジュールの耐力評価に関する研究 そ の1 載荷方法によるモジュールの応答の違い 染 川大輔，高森浩治，植松 康 日本建築学会大会学術講演梗概集(中国)，構 造Ⅰ，pp.167-168，2017.8 Experimental Study on the Wind Resistance Performance of PV Modules Part 1 Response of PV Modules in Various Loading Methods Daisuke SOMEKAWA, Koji TAKAMORI, Yasushi UEMATSU Summaries of Technical Papers of Annual Meeting Architectural Institute of Japan, Structure I, pp. 167-168, 2017.8
19. 太 陽電池モジュールの耐力評価に関する研究 そ の2 耐力評価結果 高 森浩治，染川大輔，植松 康 日本建築学会大会学術講演梗概集(中国)，構 造Ⅰ，pp.169-170，2017.8 Experimental Study on the Wind Resistance Performance of PV Modules Part 2 Result of Wind Resistance Performance Koji TAKAMORI, Daisuke SOMEKAWA, Yasushi UEMATSU Summaries of Technical Papers of Annual Meeting Architectural Institute of Japan, Structure I, pp. 169-170, 2017.8
20. 通 気性のある屋上目隠しパネル風上側近傍の局所的な流れ場 相 原知子，植 松 康 日本建築学会大会学術講演梗概集(中国)，構 造Ⅰ，pp.193-194，2017.8 Local Wind Flow around Permeable Panels on the Perimeter of Rooftop of a High-Rise Building Tomoko AIHARA, Yasushi UEMATSU Summaries of Technical Papers of Annual Meeting Architectural Institute of Japan, Structure I, pp. 193-194, 2017.8
21. 変 動風力を受ける鋼製円筒形貯槽の動的座屈特性 安 永隼平，植松 康 日本建築学会大会学術講演梗概集(中国)，構 造Ⅰ，pp.769-770，2017.8 Dynamic Buckling and Behavior of Cylindrical Steel Tanks under Fluctuating Wind Force Summaries of Technical Papers of Annual Meeting Architectural Institute of Japan, Structure I, pp. 769-770, 2017.8
22. 園 芸用パイプハウスの雪荷重による崩壊過程と補強効果 高 橋和也，植松 康 2017年 度農業施設学会大会，pp. 7-8，2017.9
23. 園 芸用パイプハウスの風荷重による崩壊過程と補強効果 植 松 康，高橋和也 2017年 度農業施設学会大会，pp. 9-10，2017.9
24. Large Eddy Simulation of Unsteady Aerodynamic Behavior of Long-Span Vaulted Roofs Wei DING, Yasushi UEMATSU Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), Vol.18, No.10, pp.793-806, 2017.10
ABSTRACT: This paper discusses the unsteady aerodynamic behavior of long-span vaulted roofs. First, a forced vibration test in a turbulent boundary layer is conducted in a wind tunnel. The models are force vibrated in the first anti-symmetric mode to investigate the effects of wind speed, rise/span ratio, and the amplitude and frequency of forced vibration on the distributions of wind pressures and unsteady aerodynamic forces. Then, a large eddy simulation (LES) is carried out to clarify the physical mechanism of wind-roof interaction as well as to investigate the influences of a roof’s vibration on the flow field around the roof. From the results of the wind tunnel xperiment and the LES, we discuss the characteristics of unsteady aerodynamic forces on a long-span vaulted roof over a ide range of the reduced frequency of vibration. The effect of unsteady aerodynamic forces on the dynamic response of the roof is also discussed. A comparison between the wind tunnel experiment and the LES indicates that the LES can be used effectively to evaluate the unsteady aerodynamic behavior.
25. 様々 な地点の風観測データを用いたピークファクターと乱れの強さの関係の検討 赤 星明紀，猿川 明，佐々木亮治，宮下康一,中村 修，植松 康 日 本風工学会論文集，第42巻 第4号 （通号第153号），pp.134-143，2017.10 Study of Relation between Peak Factor and Turbulence Intensity by Using the Wind Observation Data at Various Locations Akinori AKAHOSHI, Akira SARUKAWA, Ryoji SASAKI, Koichi MIYASHITA, Osamu NAKAMURA, Yasushi UEMATSU Journal of Wind Engineering, JAWE, Vol.42, No.4(No.153) , pp.134-143, 2017.10
SUMMARY: It is important for wind resistant design and wind environmental survey to consider the wind turbulence intensity. Therefore, it is necessary to study relation between turbulence intensity, gust factor, and peak factor. Also, it is useful to propose their relational expressions which evaluate unknown values from a known value. For this reason, the present paper provides the relation between peak factor and turbulence intensity by using a lot of observation data at various locations, and proposes an empirical formula for this relation.
26. 東北地方 における鉄骨造屋内運動場の耐震性に関する調査研究 今野大輔，植 松 康 鋼構造年次論文報告集，第25巻，pp.107-111，2017.11 Study on seismic performance of steel gymnasiums in Tohoku region Daisuke KONNO, Yasushi UEMATSU Proceedings of Constructional Steel, Vol.25, pp. 107-111，2017.11
ABSTRACT: A database on the seismic evaluation and retrofitting of steel gymnasiums in Tohoku region was constructed in order to clarify the effect of regional characteristics on the seismic performance of steel gymnasiums in Tohoku District. Focus is on the gymnasiums at public schools. The results indicate that the factors with regional characteristics, such as design snow depth, may affect the seismic performance of buildings, significantly.
27. Wind Pressures and Flow Fields Around Large-Span Roofs with Various Shapes Yuki Takadate, Yasushi Uematsu 9th Asia-Pacific Conference on Wind Engineering, Auckland, New Zealand, December 3-7 2017
ABSTRACT: The present paper discusses the characteristics of the flow around and the wind pressures on rge-span roofs with various shapes based on a computational fluid dynamics (CFD) with large eddy simulation (LES). Focus is on the effects of the roof shape and the turbulence of approach flow on these characteristics. Three kinds of roofs, i.e. flat, cylindrical and suspended roofs are investigated in two kinds of approach flows, i.e. a smooth uniform flow and a turbulent boundary layer simulating open country exposure. The turbulent boundary layer is generated by a preliminary analysis that simulates a wind tunnel flow developing on the floor with roughness blocks and spires. The simulation method of the flow around the building model is verified by a comparison of the results with the previous experimental results with flat roof models. The results of a series of numerical simulation indicate that the pressures and flow fields are significantly affected by the roof curvature as well as by the flow turbulence. It is also found that the pressure field on the roof has a convective nature in any roof case. The convection velocity depends on the roof shape as well as the turbulence of approach flow.
28. A Numerical Study of Wind Fields Near Ground Induced by Moving Downbursts Yumi IIDA, Kiyotoshi OTSUKA, Yasushi UEMATSU 9th Asia-Pacific Conference on Wind Engineering, Auckland, New Zealand, December 3-7 2017
ABSTRACT: Wind fields near the ground surface induced by downbursts were investigated by conducting a series of numerical simulations using the large eddy simulation (LES) technique, where cases of traveling downbursts are included. The simulation model was verified with the experimental results obtained from a downburst simulator. The experiment focused on the horizontal profile of the maximum gust winds, as well as their areas and magnitudes. The results showed that the traveling downbursts reduced the maximum gust wind speeds.
29. 高層建築物の屋上目隠しパネルに作用する風力 相原知子，植松 康 日 本建築学会構造系論文集，第82巻， 第742号，pp. 1853-1863，2017.12 Wind Forces on Porous Panels Placed along the Perimeter of the Rooftop Of High-Rise Building Tomoko AIHARA, Yasushi UEMATSU Journal of Structural and Construction Engineering, Transactions AIJ, Vol. 82, No. 742, pp. 1853-1863, 2017.12
ABSTRACT:Blind panels are often attached to the roof of a building along its perimeter to keep outdoor equipment from sight. Permeable materials are generally used in order to cool the equipment by winds. Furthermore, it is expected that the wind loads on such panels are smaller than those on solid panels. Previous studies of wind loads on blind panels focused on solid panels. Few studies have been made of permeable panels. The present paper investigates the wind force coefficients on solid and permeable blind panels installed on the roof of a high-rise building based on a wind tunnel experiment and a CFD simulation with LES, in which the porosity is changed from 0 to 80 %. In the wind tunnel experiment, the wind pressure coefficients on the roof near the panel are used for those on the panel’s interior surface for calculating the net wind force coefficients. Such a wind tunnel technique is verified by the numerical results. Furthermore, the simulated results indicate that large positive wind forces are induced in the upper part of solid panel, the mechanism of which is discussed based on the visualization of the flow around the panel. The effect of porosity on the wind force coefficients on permeable blind panels is also discussed.
30. ダ ウンバーストの非定常性が建築物の風荷重に与える影響に関する研究 星 野菜紡，飯田有未，植松 康 日 本風工学会論文集，第43巻第1号 （通号第154 号），pp.1-13，2018.1 Effects of Non-stationarity of Downburst on the Wind Loading of Buildings Natsumi HOSHINO, Yumi IIDA, Yasushi UEMATSU Journal of Wind Engineering, JAWE Vol.43, No.1 (No.154), pp. 1-13, 2018.1
SUMMARY: The wind characteristics of downbursts are significantly different from those of turbulent boundary layers. The non-stationarity, especially a severe moving downdraft and strong divergent outflow near ground, causes serious damage to buildings. In the past, few studies have focused on downbursts and downburst-induced wind loads on buildings. Therefore, the present study investigates the characteristics of downburst and its effects on buildings, based on two kinds of experiments using a pulsed wall jet and a moving wall jet. Special attention is paid to the effects of the non-stationarity of downburst on the wind pressure and force coefficients acting on buildings with flat and gable roofs. A brief discussion is made of the evaluation method of downburst wind loads on buildings.
31. 風外力を受ける高層建築物の外装材疲労損傷評価 寺崎 浩，植松 康 日 本風工学会誌，第43巻第1号 （通号第154 号），pp.29-34，2018.1 Fatigue Damage Evaluation of High-rize Building Cladding and Components Subjected to Dynamic Wind Forces Hiroshi TERAZAKI, Yasushi UEMATSU Wind Engineers, JAWE, Vol.43, No.1(No.154), pp.29-34, 2018.1
32. Effects of Wind Girders on the Buckling of Open-Topped Storage Tanks under Quasi-Static Wind Loading Yasushi UEMATSU, Takayuki YAMAGUCHI, Jumpei YASUNAGA Thin-Walled Structures, Vol.124, pp.29-34, 2018.1
ABSTRACT: The present paper investigates the wind resistant design of ring-stiffened open-topped storage tanks based on finite element analyses, in which we use the distributions of wind pressure on isolated and grouped tank models measured in a wind tunnel experiment. The effects of top/intermediate wind girders on the buckling load and mode of tank shells are investigated based on the results of buckling analysis for quasi-static wind loadings. The design recommendations for the wind girders are proposed, which may provide more reasonable design criteria for the wind girders than the current design guidelines
33. Surrounding Effect on Internal Wind Pressure and Correlation between External-Internal Pressures on Low-Rise Buildings Eri GAVANSKI, Daisuke KONNO, Yasushi UEMATSU International Workshop on Wind-Related Disasters and Mitigation, Tohoku University, Sendai, Japan, March 11-14, 2018
ABSTRACT: The effect of surrounding buildings on internal pressure coefficient, Cpi, and the correlation between Cpi and external pressure coefficient, γ, were examined by performing wind tunnel tests using a flat-roofed low-rise building model. It is found that its effect is mainly shielding and is significant especially on Cpi. Simple fragility analysis was performed in order to understand its effect more clearly. This result indicates that the use of Cpi and γ obtained from the isolated building underestimates the roof panel failure wind speed for surrounding building by the degree that it can affect the tornado rating using the EF-scale.
34. An Empirical Model of Downburst of Non-Stationary Pulsed Jet Yumi IIDA, Yasushi UEMATSU International Workshop on Wind-Related Disasters and Mitigation, Tohoku University, Sendai, Japan, March 11-14, 2018
ABSTRACT: The present study proposes an empirical model based on the OBV model [1, 2], in which the parameters are empirically determined from a large eddy simulation (LES) technique of a downburst. LES is verified by the experimental results with a downburst simulator [3]. It is found that the proposed empirical model can provide the scalar velocity distributions consistent with those obtained from the LES in the area represented by 0.5<r/D, in which r is radial distance; z is vertical distance; and D is diameter of the jet. However, the model underestimates the wind velocities vertical component at z/D<0.2. This may be due to the differences in flow characteristics between steady and unsteady jet flows. It is suggested from the results that the present model will be more improved by considering these effects appropriately.
35. A Stochastic Model for Predicting Wind-Induced Damage to Wooden Houses in Snowy Cold Regions Sachiko YOSHIDA, Daisuke KONNO, Kosuke SATO, Eri GAVANSUKI, Yasushi UEMATSU1 International Workshop on Wind-Related Disasters and Mitigation, Tohoku University, Sendai, Japan, March 11-14, 2018
ABSTRACT: A stochastic model for predicting wind-induced damage to wooden houses in snowy cold region has been developed, focusing on the roof frame joints. The model consists of ‘wind load model’ and ‘wind resistance model’. Pulling-up load tests were carried out to evaluate the wind-resistant performance of roof frame joints. The test specimens were designed based on a questioner survey on the change in material and construction of roofs, which had been given to the house builders in Tohoku District, a snowy cold region of Japan.
36. The Experimental Study of Wind Loads on a Building Induced by a Non-Stationary Downburst Kazunori ASANO, Yumi IIDA, Yasushi UEMATSU International Workshop on Wind-Related Disasters and Mitigation, Tohoku University, Sendai, Japan, March 11-14, 2018
ABSTRACT: The downburst wind field and downburst-induced wind loads on a flat-roofed low-rise building have been investigated experimentally by using a downburst simulator that we developed. The downburst simulator consists of a blower of 0.6 m diameter that can move horizontally at a constant speed up to 2 m/sand a shutter-type opening installed above the outlet of the blower. The simulator can generate a pulsed jet and a moving draft either separately or simultaneously. Using this simulator, the flow structure in the downburst were first measured under various conditions. The results indicate that the profile of the maximum wind velocity is significantly affected by the location where the shutter opens. The wind pressures on a flat-roofed low-rise building were also measured. It is found that the pulsed moving jet produces larger drag forces on the building than the pulsed jet without moving and the moving jet. Furthermore, the results were compared with those obtained in a turbulent boundary layer. It is found that downburst may produce larger negative pressures on the roof over a wide area than the turbulent boundary layer.
37. Analytical Study on Collapse Processes and Reinforcement Effects of Pipe-Framed Greenhouses under Wind Loads Kazuya TAKAHASHI, Yasushi UEMATSU International Workshop on Wind-Related Disasters and Mitigation, Tohoku University, Sendai, Japan, March 11-14, 2018
ABSTRACT: The present paper investigates the collapse process of pipe-framed greenhouses under static wind loading based on a non-linear finite element analysis in order to establish more reasonable wind resistant design method for these structures. The results are compared with the current design guideline commonly used in Japan to examine its validity. The same analysis is carried out for models with various reinforcements. The structures are generally so flexible that the fluid-structure interaction (FSI) is taken into account. In practice, iterative analyses of the structure’s response and the pressure distribution on the deformed structure are made. CFD analysis with RANS model is used for evaluating the pressure distribution. Both the geometric and material non-linearity are considered in the structural analysis.
38. 太 陽光発電システムの構造安全性向上に向けて 植 松 康 太 陽エネルギー，第44巻， 第2号，pp.4-8，2018.2 Towards Improvement in the Structural Safety of Photovoltaic Systems Yasushi UEMATSU Journal of the JSES, Vol.44, No.2, pp. 4-8, 2018.2
39. 円 筒形構造物に作用する津波力に関する水理模型実験 亀 谷裕紀・佐藤公亮・植松 康・寺本尚史・小幡昭彦 東 北地域災害科学研究，第54巻，pp. 19-24，2018.3 Hydraulic Model Test on Tsunami Force Acting on Cylindrical Structures Hiroki KAMEYA, Kosuke SATO, Yasushi UEMATSU, Naofumi TERAMOTO, Akihiko OBATA Tohoku Research Group for Natural Disaster Science, Vol.54, pp. 19-24, 2018.3
40. 庇 に作用する変動風力の特性に及ぼす建物高さの影響 畠 山智貴・佐藤公亮・植松 康 東 北地域災害科学研究，第54巻，pp. 193-198，2018.3 Effect of Building Height on Characteristics of Fluctuating Wind Force Acting on Canopies Tomoki HATEKEYAMA, Kosuke SATO, Yasushi UEMATSU Tohoku Research Group for Natural Disaster Science, Vol.54, pp. 193-198, 2018.3
41. 積 雪寒冷地にある老朽木造住宅の小屋組接合部の耐風性能評価に関する研究 吉 田早智子・今野大輔・佐藤公亮・植松 康 東 北地域災害科学研究，第54巻，pp. 199-204，2018.3 Evaluation of Wind Resistance of Roof Frame Joints of Old Wooden Houses in Snowy Cold Regions Sachiko YOSHIDA, Daisuke KONNO, Kosuke SATO, Yasushi UEMATSU Tohoku Research Group for Natural Disaster Science, Vol.54, pp. 199-204, 2018.3
付録 平成29年 度 博 士・修士学位論文及び卒業論文題目一覧
博士学位論文 相 原 知子 高層建築物の外壁に設置される通気性を有する外装材の設計用風荷重に関する研究 赤星 明紀 風の乱れの影響を考慮した風環境評価指標に関する研究 今野 大輔 外 装材の劣化を考慮した耐力評価に基づく建物強風災害リスクモデル ― 積雪寒冷地における木造住宅を対象として― 安永 隼平 円筒形貯槽の座屈・振動特性を考慮した耐風設計法に関する研究
修士学位論文 髙橋 和也 園芸用パイプハウスの風・雪荷重による崩壊過程と補強効果に関する解析的研究 畠山 智貴 大庇をうける梁の柱-梁 溶接接合部の風外力による累積疲労損傷の予測手法 山村 朗丸 円弧型およびドーム型独立上屋の設計用風荷重に関する研究 吉田早智子 積雪寒冷地にある木造住宅屋根部の老朽化を考慮した強風被害予測手法の開発
卒業論文 亀 谷 裕紀 円筒形構造物に作用する津波力の基礎的性状 松本 拓 変動風力を受ける低層鋼構造建築物の高サイクル疲労損傷に関する研究 山本 岳史 連棟配置された円筒形貯槽に作用する変動風圧と動的応答特性
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