2019 論文集
1.
通気工法を用いた外壁システムの風荷重評価に関する研究
渡
部 慶,植松 康
日本風工学会論文集,第44巻第2号(通号第159号),pp.23-32,2019.4
Evaluation of Wind Loads on Ventilated Exterior
Wall Systems
Kei WATANABE, Yasushi UEMATSU
Journal of Wind Engineering, JAWE,
Vol.44, pp.23-32, 2019.4
2.
Experimental Study of Wind Loads on Domed Free
Roofs
Yasushi UEMATSU, Roma YAMAMURA
Proceedings of the XV Conference of the Italian
Association for Wind Engineering, IN-NENO 2018, Lecture Note
in Civil Engineering, 27 (2019) , Springer (Ed: Francesco
Ricciardelli, Alberto Maria Avossa), pp. 716-729, 2019.
ABSTRACT: Design wind loads on domed free roofs have been
investigated in a wind tunnel. Wind pressure distributions
both on the top and bottom surfaces of the roof models were
measured. The rise-to-span ratio, f/D, was varied from 0.1 to
0.4. First, the effect of the Reynolds number on the pressure
distribution is examined. Then, the effects of f/D on the wind
pressures and forces are made clear. The wind force
coefficients for designing the main wind force resisting
systems are proposed, in which focus is on the axial forces
induced in the columns supporting the roof as the most
important load effect, assuming that the roof is rigid and
supported by four columns. Finally, the peak wind force
coefficients for the design of cladding/components are
proposed based on the maximum and minimum peak wind force
coefficients irrespective of wind direction.
3.
風圧の空間的・時間的変動特性を考慮した機械的固定工法防水システムの耐風性能評価手 法の開発
杉山進伍,植松 康,佐藤公亮,臼倉拓人,小野克也
日
本建築学会技術報告集,第25巻第60号
,pp.585-589,2019.6
Development of a Wind
Resistance Performance Test Method for Mechanically-
Attached Waterproofing Systems Considering the Time- Space
Correlation of Wind Pressures
Shingo SUGIYAMA, Yasushi UEMATSU, Kosuke SATO,
Takuto USUKURA, Katsuya ONO
AIJ Journal of Technology and Design, Vol.25
No.60, pp. 585-589, 2019.6
SUMMARY: A wind resistant performance test method for
mechanically-attached waterproofing systems has been developed
using three pressure loading actuators (PLAs). The chamber to
which specimen is attached is divided into three rooms. The
PLAs generates fluctuating wind pressures in the rooms
separately using the time history of wind pressures measured
at different points on the building model in a wind tunnel.
The test results are consistent with those of full-scale
measurements performed on a test building. Furthermore, the
dynamic response of the roofing system is simulated by a
finite element method. The result of the analysis is
consistent with the experimental results.
4.
Criterion for Wind Environment Assessment with Consideration
to the Effect of Turbulence
Akinori AKAHOSHI, Yasushi UEMATSU
Technical Transactions, Civil Engineering,
Vol.116(7) (2019), pp.5-22, 2019.7
ABSTRACT: Turbulence affects the human perception of wind,
the wind-induced damage to buildings, the val-ues of wind
speeds measured by 3-cup anemometers, and so on. The wind
environment assessment criterion proposed by the Wind
Engineering Institute Co., Ltd. is based on the relationship
between the mean wind speeds measured by 3-cup anemometers and
the condition of surrounding terrain. This criterion does not
consider the influence of turbulence. Considering the
significant urbanization of large cities and the change in
anemometers used for wind speed measurements, a new criterion
of wind environment assessment that considers the effect of
turbulence is required. The present study discusses such a
criterion based on a wind tunnel experiment, the observation
at various locations, and a questionnaire survey on the wind
environment that was conducted with for the residents and
pedestrians in Tokyo.
5.
Wind Loads for Designing the Main Wind-Force
Resisting Systems of Cylindrical Free- Standing Canopy Roofs
Yasushi UEMATSU, Roma YAMAMURA
Technical Transactions, Civil Engineering,
Vol.116(7) (2019), pp. 125-143, 2019.7
ABSTRACT: Wind loads on cylindrical free-standing canopy
roofs were investigated in a wind tunnel. First, the overall
aerodynamic forces and moments were measured using a force
balance. The distributions of net wind pressures provided by
the difference between wind pressures on the top and bottom
surfaces of the roof were then measured along two
representative arc lines. Based on the results, the net
wind-pressure coefficients for designing such roofs are
proposed as a function of the rise-to-span ratio for two
representative wind directions: one perpendicular to the
eaves, the other inclined at an angle of 45° to the eaves. The
roof is divided into three zones and constant net
wind-pressure coefficients are specified for these zones. Two
load cases providing the maximum tension and compression in
the columns supporting the roof are considered as the most
important load effect for discussing the design wind loads.
6.
Numerical Study of Wind Loads on Buildings
Induced by Downbursts
Yumi IIDA, Yasushi UEMATSU
Journal of Wind Engineering and Industrial
Aerodynamics, Vol.191 (2019), pp.103- 116, 2019.8
ABSTRACT: The wind characteristics of downbursts are quite
different from those of turbulent boundary layers.
Non-stationarity (e.g., a severe moving downdraft and a strong
divergent outflow near the ground) causes severe damage to
buildings and structures. In our previous study, the following
features of non-stationarity were experimentally reproduced
using a downburst simulator: wind speed increase that occurs
when the wind hits the ground, wind speed increase resulting
from the movement of a downdraft accompanied by that of parent
clouds, and wind speed increase caused by a combination of
these phenomena. In the experiments, the measurement area of
the flow fields and the points of pressure measurements on a
building model were so limited that detailed information on
the flow and pressure fields could not be obtained. Therefore,
in the present, we conduct a computational fluid dynamics
(CFD) simulation of downbursts using a large eddy simulation
to investigate the mechanism that causes strong winds. We
focus on the effects of the aforementioned non-stationarity of
downbursts on the wind loads on buildings. The CFD simulation
successfully reproduces the experimental results and clarifies
the features of downburst-induced wind loads.
7.
風圧の空間的・時間的変動特性を考慮した機械的固定工法防水システムの耐風試験法に関する検討
杉山進伍,植松 康,臼倉拓人,小野克也,佐藤公亮
日本建築学会大会学術講演梗概集(北陸),材
料施工,pp.935-936,2019.9
Development of a Wind
Resistance Test Method for Mechanically-Attached
Waterproofing Systems Considering the Time-Space Correction
of Wind Pressures
Shingo SUGIYAMA, Yasushi
UEMATSU,
Takuto USUKURA, Katsuya ONO, Kosuke SATO
Summaries of Technical Papers of Annual Meeting
Architectural Institute of Japan, Material and Contraction, pp. 935-936,
2019.9
8.
円筒形構造物に作用
する津波による波圧力の分布に関する検討
亀
谷裕紀,佐藤公亮,小幡昭彦,植松 康
日本建築学会大会学術講演梗概集(北陸),構
造T,pp.83-84,2019.9
Study on Distribution of
Wave Pressure by Tsunami Force Acting on Cylindrical
Structures
Hiroki
KAMEYA, Kosuke SATO, Akihiko OBATA, Yasushi UEMATSU
Summaries of Technical Papers of Annual Meeting
Architectural Institute of Japan, Structure I, pp.
83-84,
2019.9
9.
ダウンバーストが規模の異
なる建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(北陸),構
造T,pp.95-96,2019.9
Wind Loads on a Different
Scale Building by a Moving Downburst A
Kazunori
ASANO,
Yumi IIDA, Yasushi Uematsu
Summaries of Technical Papers of Annual Meeting
Architectural Institute of Japan, Structure I, pp.
95-96,
2019.9
10.
低層切妻鉄骨構造建築物の構造骨組用外圧係数の荷重効果に基づく検討
郡司誠矢,松本 拓,佐藤公亮,植松 康
日本建築学会大会学術講演梗概集(北陸),構
造T,pp.109-110,2019.9
Investigation of External Wind Pressure
Coefficients for the Main Wind Force Resisting
Systems of Low-Rise Steel Structures with Gable Roofs Based
on the Load Effects
Seiya GUNJI, Taku MATSUMOTO, Kosuke SATO,
Yasushi UEMATSU
Summaries of Technical Papers of Annual Meeting
Architectural Institute of Japan, Structure I, pp.
109-110,
2019.9
11.
屋根に平行に設置された太陽光発電システムの風荷重評価とそれによる屋根葺き材の風荷重低減効果 その 1 :
研究の概要と風洞実験
山
家哲生,渡部智之,佐藤公亮,植
松 康
日本建築学会大会学術講演梗概集(北陸),構
造T,pp.113-114,2019.9
Wind Loads on Photovoltaic Systems Installed
Parallel to the Building’s Roof and its Wind Load Reduction
Effect on the Roofing System Part 1: Outline of the Study
and Wind Tunnel Experiment
Tetsuo YAMBE, Tomoyuki WATANABE, Kosuke SATO,
Yasushi UEMATSU
Summaries of Technical Papers of Annual Meeting
Architectural Institute of Japan, Structure I, pp.
113-114,
2019.9
12.
屋
根に平行に設置された太陽光発電システムの風荷重評価とそれによる屋根葺き材の 風荷重低減効果 その 2 :
層内圧シミュレーション
渡部智之,山家哲生,佐藤公亮,植松 康
日本建築学会大会学術講演梗概集(北陸),構
造T,pp.115-116,2019.9
Wind Loads on Photovoltaic Systems Installed
Parallel to the Building’s Roof and its Wind Load Reduction
Effect on the Roofing System Part2: Layer Internal Pressure
Simulation
Tetsuo
YAMBE, Tomoyuki WATANABE, Kosuke SATO, YasushiUematsu
Summaries of Technical Papers of Annual Meeting
Architectural Institute of Japan, Structure I, pp.
115-116,
2019.9
13.
FRP
部材を用いた園芸用プラスチックハウスの耐風・耐雪性能に関する研究
松本 拓,真崎智亮,植松
康,佐藤公亮
日本建築学会大会学術講演梗概集(北陸),構
造T,pp.119-120,2019.9
Study on Wind and Snow Resistance of
Pipe-Framed Greenhouses Constructed of FRP Members
Taku MATSUMOTO, omoaki MAZAKI, Yasushi UEMATSU,
Kosuke SATO
Summaries of Technical Papers of Annual Meeting
Architectural Institute of Japan, Structure I, pp.
119-120,
2019.9
14.
高
層建築物の初期形状検討に用いる CFD の実用的なメッシュ分割
中野泰我,植松 康,舘祐貴
日本建築学会大会学術講演梗概集(北陸),構
造T,pp.123-124,2019.9
Practical Condition of
CFD Simulation for Evaluating Wind Loads on High-Rise
Buildings
Taiga NAKANO, Yasushi UEMATSU, Yuki TAKADATE
Summaries of Technical Papers of Annual Meeting
Architectural Institute of Japan, Structure I, pp.
123-124,
2019.9
15.
空力減衰に基づく大スパン屋根の空力安定性評価
舘祐貴,植
松 康
日本建築学会大会学術講演梗概集(北陸),構
造T,pp.131-132,2019.9
Aerodynamic Stability on
Long-Span Roofs Based on the Aerodynamic Damping
Yuki TAKADATE, Yasushi UEMATSU
Summaries of Technical Papers of Annual Meeting
Architectural Institute of Japan, Structure I, pp.
131-132,
2019.9
16.
I 型および L 型の屋上広告板端部に作用する正のピーク風力と建築物形状の関係
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(北陸),構
造T,pp.147-148,2019.9
Relationship between
Positive Peak Wind Force Acting on the Edge of I-Shaped and
L-Shaped Signboards Installed on Rooftop Building and
Building Shape
Yuka MASUYAMA, Osamu NAKAMURA, Yasushi UEMATSU,
Yasuo OKUDA
Summaries of Technical Papers of Annual Meeting
Architectural Institute of Japan, Structure I, pp.
147-148,
2019.9
17.
超
中層建築物の外壁に設置される通気性を有する外装材のピーク風力係数
相原知子,植
松 康
日本建築学会大会学術講演梗概集(北陸),構
造T,pp.149-150,2019.9
Study of Peak Wind Force
Coefficients on Permeable Members Attached to the Exterior
of Medium-Rise Buildings
Akinori
Tomoko AIHARA, Yasushi UEMATSU
Summaries of Technical Papers of Annual Meeting
Architectural Institute of Japan, Structure I, pp.
149-150,
2019.9
18.
矩形陸屋根建築物に取り付く吊大庇の荷重効果に基づく風力係数
佐藤公亮,文 礼志,植松 康
日本建築学会大会学術講演梗概集(北陸),構
造T,pp.151-152,2019.9
Wind Force Coefficients
Based on Load Effects of Hung Large Canopies Attached to
Rectangular Buildings with Flat Roofs
Kosuke SATO, Lizhi WEN, Yasushi
UEMATSU
Summaries of Technical Papers of Annual Meeting
Architectural Institute of Japan, Structure I, pp.
151-152,
2019.9
19.
ダウンバーストによる建物の風力に関する研究
飯
田有未,浅野和則,植松 康
日本建築学会大会学術講演梗概集(北陸),構
造T,pp.159-160,2019.9
Wind Force on Buildings
Induced by Downburst
Yumi IIDA, Kazunori ASANO, Yasushi
UEMATSU
Summaries of Technical Papers of Annual Meeting
Architectural Institute of Japan, Structure I, pp.
159-160,
2019.9
20.
Steady and Unsteady Aerodynamic Forces on a
Long-Span Membrane Structure
Yuki TAKADATE, Yasushi UEMATSU
Journal of Wind Engineering and Industrial
Aerodynamics, Vol.193 (2019), 103946, 2019.10
ABSTRACT: This paper reports the steady and unsteady
(motion-induced) aerodynamic forces on long-span roofs based
on computational fluid dynamics (CFD) analysis with a large
eddy simulation (LES). Three types of roofs, i.e., flat,
cylindrical, and suspended roofs, are tested. First, the wind
pressures on a rigid flat roof in a smooth uniform flow and a
turbulent boundary layer are computed. The computational model
and method are verified by comparing the obtained wind
pressure distributions on the roofs with previous experimental
results. Next, a forced vibration test is performed to
understand not only the wind pressures on and the flow around
the vibrating roof but also the unsteady aerodynamic forces,
which are represented by the aerodynamic stiffness and
damping. In the test, the roof is forced to vibrate in the
first antisymmetric mode. The effects of vibration frequency
on the pressure distribution and unsteady aerodynamic forces
are investigated. On the basis of the results, the stability
of the roofs is discussed. Furthermore, the dynamic response
of a flat roof is analyzed considering the fluid–structure
interaction (FSI) to investigate the vibration mechanism of
the roof in more detail.
21.
Investigation of Aerodynamic Stability of a
Long-span Flat Roof based on Wind Tunnel Experiment and FSI
Simulation with Free-vibration Technique
Yuki TAKADATE, Yasushi UEMATSU
14th International Symposium on Advanced Science
and Technology in Experimental Mechanics, 1-4 November, 2019,
Tsukuba, Japan, 2019.11
ABSTRACT: The present paper discusses the wind-induced
vibration of a long-span flat roof on the basis of a wind
tunnel experiment and a fluid-structure interaction (FSI)
simulation with free-vibration technique. The experiment and
simulation were carried out in a smooth uniform flow and a
turbulent boundary layer to assess the effect of turbulence on
the dynamic response. The variation of mean and standard
deviation displacements of the roof was obtained by changing
the wind velocity. In the experiment, the similarly between
the practical membrane structure at full scale and the model
used in the experiment was not necessarily satisfied because
of the limitation of experimental condition. Then, an FSI
simulation which couples a computational fluid dynamics (CFD)
analysis for fluid and a finite element analysis for structure
is carried out to examine the practical behavior of the
long-span roof in wind. In addition, the modes and eigenvalues
of free-vibration at each wind velocity are detected by using
a proper orthogonal decomposition analysis. These results
indicate that the static deformation is one of the most
important factors for assessing the vibration mechanism of
long-span roofs.
22.
Investigation of Aerodynamic Stability of a
Long-span Flat Roof based on Wind Tunnel Experiment and FSI
Simulation with Free-vibration Technique
Yuki TAKADATE, Yasushi UEMATSU
Advanced Experimental Mechanics, Vol.4 (2019),
pp.192-197, 2019.12
ABSTRACT: The present paper discusses the peak wind force
coefficients for designing the claddings and its immediately
supporting structures of open type membrane structures based
on a wind tunnel experiment. Three types of gable-end
configurations, i.e. enclosed, open and partially-enclosed
(semi-open) types are tested. The wind tunnel experiment is
carried out in two kinds of turbulent boundary layers
corresponding to open-country and urban terrains. The wind
pressures are measured simultaneously at many points both on
the external and internal surfaces. First, the distributions
of mean wind force coefficients are investigated to understand
the characteristics of the wind forces, focusing on the
effects of gable wall configuration. Then, the maximum and
minimum peak wind force coefficients irrespective of wind
direction are examined. Furthermore, the characteristics of
internal pressures on open and semi-open type structures are
investigated. Based on the results, an estimation method for
evaluating the peak wind force coefficients for open and
semi-open type structures is propose
23.
スパン・軒高比が陸屋根の非定常空気力に及ぼす影響
舘祐貴,植
松 康
膜構造研究論文集,第33巻,pp.1-11,2020.3
Unsteady
Aerodynamic Forces on Long-span Flat Roofs with Various Span
to Eaves-height Ratios
Yuki TAKADATE, Yasushi UEMATSU
Research Paper on Membrane Structures, No.33,
pp.
1-11,2020.3
SYNOPSIS:
Aerodynamic stability of long-span flat roofs
has been investigated on the basis of the computational fluid
dynamics with a large eddy simulation. The span to
eaves-height ratio (L/H) of the building was changed from 3 to
9 to understand the effect of the separated flow and the
separation bubble, which are strongly affected by L/H, on the
unsteady aerodynamic forces acting on the vibrating roof in
the first anti-symmetric mode. First, the distributions of
mean and RMS fluctuating wind pressure coefficients on the
rigid and vibrating roofs were examined, in which the
vibration mode was assumed to be the first anti- symmetric
mode. The results on the mean and fluctuating wind pressure
distributions on the rigid roofs indicate that the eaves
height is one of the most important factors to evaluate the
wind pressure distributions. It is also found that the
distributions of RMS fluctuating wind pressure coefficients on
the vibrating roof is characterized by the vibration mode. To
understand the characteristics of fluctuating wind pressures
in detail, the power spectral densities and phase differences
of fluctuating wind pressures were examined. The general shape
of the power spectral densities for the vibrating roof was
found to be similar to that for the rigid roof. The results
indicate that the fluctuating component of wind pressures at
the forced vibration frequency is related to the roof’s
vibration significantly. However, the roof’s vibration affects
the phase differences of fluctuating wind pressures only a
little. The unsteady aerodynamic forces at the location of
anti-nodes of vibration mode are affected by the separation
bubble generated by the flow separation from the leading edge
of the roof. However, the generalized unsteady aerodynamic
forces are minutely affected by L/H. Finally, a formula for
the critical wind velocity that induces the aerodynamically
unstable vibration is proposed on the basis of the generalized
aerodynamic damping. The critical reduced wind velocity,
defined by the velocity at the eaves height, the span and the
natural frequency of the first anti- symmetric mode, are 1.27
and 1.47 for the uniform flow and the turbulent boundary
layer, respectively.
24.
円弧型独立上屋に作用する風圧の時間的・空間的変動特性に関する研究
文 礼志,植
松 康
膜構造研究論文集,第33巻,pp.39-52,2020.3
Characteristics of Wind Pressures and Wind Forces on a
Cylindrical Free Roof Focusing on the Spatial and Temporal
Variations
Lizhi WEN, Yasushi UEMATSU
Research Paper on Membrane Structures, No.33,
pp.
39-52,2020.3
SYNOPSIS:
The present study investigates the
characteristics of wind pressures and wind forces acting on a
cylindrical free roof based on a wind tunnel experiment as
well as on a CFD simulation using LES, focusing on the spatial
and temporal variations. The rise/span ratio (f/B) and the
length/span ratio (W/B) of the roof were changed from 0.1 to
0.4 and from 1 to 3, respectively. In the wind tunnel
experiment the wind pressure distributions were measured along
only two lines because of a limitation of model making. The
effects of f/B and W/B on the distributions of wind pressure
coefficient and wind force coefficient, provided by the
difference between wind pressures on the top and bottom
surfaces, were made clear. A CFD simulation with LES was also
carried out in order to investigate the spatial and temporal
variations of wind pressures and wind forces over the whole
roof area. The CFD model used in the simulation was first
verified by comparing the results with the experimental ones.
Then, the characteristics of wind pressure and force
distributions were investigated. Finally, discussion was made
of the peak wind force coefficients for the design of
cladding/components of cylindrical free roofs, based on the
experimental and numerical results.
付録 令和元年
度
博
士・修士学位論文及び卒業論文題目一覧
修士学位論文
亀
谷 裕紀 円筒形オイルタンク群に作用する津波力および耐津波特性に関する研究
松本 拓 風力を受ける低層鋼構造建築物柱梁溶接接合部における累積疲労損傷
卒業論文
菅
原 淳史 正方形中空断面柱部材の新規幅厚比尺度による最大耐力・塑性変形能力評価法
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