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Department of Architecture*nonmember

Urban Design of Civic Center in prefectural capital Cities based on Japanese Castle-Towns in theearly Showa era.[in Japanese], Kenjiro MATSUURA, Satoshi KUSAKABE , Yoshihiro
YOKOTA , Yosuke YAMAGUCHI and Masuro URAYAMA : Jounal of Architecture and Planning ,Transactions of Architectural Institute of Japan, No. 588, p.p. 87-94, 2005.2
This paper aims to clarify how to form Civic Center in Castle area in relation toCastle-Towns basis analyzing cases of prefectural capital 17 Cities based on JapaneseCastle-Towns in the early Showa era.
Findings are as follows : 1) Government and municipal offices tended to be dispersed
from Meiji and Taisho era to the early Showa era, 2)The whole government and municipal offices
tended to be located outside Castle area,but those which formed Civic Center tended to be locatedinside Castle area, 3)Paying attention to "Class" and "Axis" as space elements of making Castle
area , as a result of analyzing relationship between those and Civic Center , we discover various
Urban Design method of Civic Center such as Discrimination by locating Prefectural office in thesite of the main enclosure of a castle and making identified and symbolic Urban Space bylocating government and municipal offices along moat or skirts of a mountain or main streets.

STUDY ON HISTORIC ENVIRONMENT CONSERVATION PLAN OF DA-DAO-CHENG
DISTRICT IN TAIPEI [in Japanese], Meiyin LIN, Satoshi ASANO and Masuro URAYAMA,
Journal of Architecture Planning of AIJ, No.592, pp.123-133, 2005
Da-Dao-Cheng district, with various kinds of historic shop-houses, is located in
Metropolitan of Taipei. The conservation movement by the citizen, NPOs, and experts beganwith the road-widening urban plan on the main street, Di-Hwa Street, and led to the change ofpolicies to conservation. The conservation plan was officially announced in 2000 after varions
discussions, by designated as a special district with the use of system of Transfer of Development
Rights. This paper discusses the achievement and issues of the conservation plan, by analyzing
the process of plan making, changing of conservation proposals, and the current operations.

An Economical Evaluation of Greenery Townscape composed by Trees on Housing Lots - A
Study on Possibility of Co-Managing the Common Benefit of Private Spaces in Cooperate with
Local Residents - [in Japanese], Naoki HAYASHI, Shiro KAWAI and Masuro URAYAMA,
Journal of the City Planning Institute of JAPAN, No.40-3, pp.841-846, 2005
This paper evaluates the environmental values that residents will pay for enjoying
greenery townscape composed by trees on housing lots. Two questionnaires were carried out; oneis to compare the residents’ consciousness of 3 neighborhoods which have various green covered
area ratio on their greenery townscape, another is to evaluate the economical values of greenery
townscape using Contingent Valuation Method (CVM). Conclusions are as followings: Residents
in greenery neighborhood think that their and surrounding lots contribute to make greenery
townscape rich. Therefore many residents will pay a part of the cost to maintain the greeneryA－46

townscape formed by trees on surrounding housing lots that makes them feel common green.

Study on Classification of Irrigation Reservoirs for Improvement Planning [in Japanese], Akira
TOMORI and Masuro URAYAMA, Papers on Environmental Information Science, No.19,
pp.77-82, 2005
This paper presents an improvement guideline of irrigation reservoir as environmental
resources. In order to classify reservoir for improvement planning, five common factors wereextracted from factor analysis of fourteen indicators. Through cluster analysis, reservoirs could
be classified in five groups: big reservoirs, irrigation reservoirs for agricultural propose, rural
reservoirs adjacent to residential area, small reservoirs in urban areas and small reservoirs inrural areas. Also, characteristics of reservoir improved as urban parks and as rural improvement
project were analyzed, and compared with those groups to see conditions for selection forimprovement planning. The selection method shows that the improvement planning emphasizes
the use of reservoir as irrigation facility or as environmental resources.

A COMPARISON STUDY ON USERS ’ CHARACTERISTICS AND RECREATIONAL
ACTIVITIES BETWEEN A PARK WITH RESERVOIR AND ANOTHER WITHOUTRESERVOIR −Characteristics of recreational activities at reservoir’s waterfront area− [inJapanese], Akira TOMORI and Masuro URAYAMA, Journal of the City Planning Institute ofJAPAN, No.598, pp. 87-94, 2005
Abstract: Reservoirs are artificial lakes built as agricultural facilities, and play asignificant role as urban resources. A comparison study through observation and questionnaire
survey between a park with reservoir and another without reservoir was conducted to examine
the characteristics of recreational activities at reservoir’s waterfront area. In a park withreservoir, passive recreational, active recreational and walking were observed at waterfront area,
which includes the walking path and the bank. Walking was the dominant recreational activity
in this area and the majority of this recreational activity was daily or weekly - elderly users.
Users that came to walk in a park with reservoir were more and stayed longer than in a park
without reservoir due to opportunities for enjoying the aesthetical quality that the reservoir andthe environment provide.

A Study on the applying Circumstances and Roles of the Landscape Administrative Measuresin the Landscape Ordinance about the Total Developmnt Type, The present condition of thePrefectures’ landscape administrative measures centered on the landscape ordinances Part 1,
Yoshio BANDO, Satoshi ASANO and Shoji IMAI, Journal of Architecture and Planning, No.597,
pp.109-118, 2005

City Planning Stdies “Presents Situation and Prospects, Foregin Countries”, Satoshi ASANO,City Planning Review, No.262, pp.83-88, 2005

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A Study on the Successive Change Condition of Management of Condominiums Including Many
Units in Tokai Area−Management Rules and Countermeasures to Pets Breeding Problem− [inJapanese], Hiroyuki Takai, Urban Housing Sciences, No.51, pp.95-100, 2005
The aim of this research is to make clear the actual condition on successive change ofthe management of condominiums including many units in Tokai area, especially focused on the
management rules and countermeasures to pets breeding problem. The research was made for 9
housing estates by the way of hearing to the chief of homeowners association or the management
staff. Many changes are surely occurred. For example, management rules and the organization of
homeowners association are changed because of physical aging, residents’aging and short of theassociation’s budget. The countermeasures to the pets breeding problem are various in eachcondominium in spite of almost all residents’ much dissatisfaction.

A Study on the Successive Change Condition of Common Spaces and facilities in Condominiums
Including Many Units [in Japanese], Ch. Hiroyuki Takai; Mem. Hiroko Saito, Mitsuo Takada ,Nishido Hirotaka , Yuki Miyauchi and Takahiro Moki, Journal of Housing Research Foundation,
No.31, pp.241-250, 2005
Common spaces and facilities have taken root as a way of planning for condominiums
including many units in Japan. The aim of this study is to make clear the actual condition on
successive change of these common spaces and facilities in early condominiums, and makesuggestions to make them work well. The researches were conducted by way of questioners to
the chief of homeowners association or the management staff by mail and hearing on 8 housing
estates. Some interesting changes have already occurred and they can be arranged by threefactors. From the actual conditions of these changes 8 suggestions to make them work well
could be made.

Experimental Study on Behavior of Free Water in Dewatered Concrete Using Visible Evaluation
Method [in Japanese], Toshitsugu INUKAI, Shigemitsu HATANAKA, Naoki MISHIMA and
Minsu JANG, Proceedings of the Japan Concrete Institute, Vol.27, No.1, pp.595-600, 2005.7

Behavior of Air Bubbles in Mortar and Concrete during Vacuum-processing [in Japanese] Eisuke
SAKAMOTO, Shigemitsu HATANAKA, Hiroki HATTORI and Naoki MISHIMA, Proceedings of
the Japan Concrete Institute, Vol.27, No.1, pp.1021-1026, 2005.7

Fundamental Study on Exfoliation Damage Properties of Porous Concrete by Wear Test [inJapanese] Takeshi NAKAGAWA, Toshitsugu INUKAI, Naoki MISHIMA and Shigemitsu
HATANAKA, Proceedings of the Japan Concrete Institute, Vol.27, No.1, pp.1261-1266, 2005.7

Fundamental Study on Distribution of Compressive Strength of Porous Concrete [in Japanese]

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Takamasa YAMAMOTO, Shigemitsu HATANAKA, Sachio KOIKE* and Naoki MISHIMA,
Proceedings of the Japan Concrete Institute, Vol.27, No.1, pp.1267-1272, 2005.7

Fundamental Study on Bending Fracture Properties of Large Particle Size Porous Concrete [inJapanese] Akihiro MAEGAWA, Shigemitsu HATANAKA, Naoki MISHIMA and Moe KURODA,
Proceedings of the Japan Concrete Institute, Vol.27, No.1, pp.1273-1278, 2005.7

Axial Compression 3-D FEM Analysis on Confined Concrete with Bleeding Layers [in Japanese]
Yukio YOSHIDA, Eiji MIZUNO* and Shigemitsu HATANAKA, Proceedings of the Japan
Concrete Institute, Vol.27, No.2, pp.103-108, 2005.7

Effect of Piles on Rotating Criteria of Shear Walls in Seismic Evaluation of Existing RC
Buildings [in Japanese] Toyofumi TAKADA, Shigemitsu HATANAKA and Kenzo KUBOTA,
Proceedings of the Japan Concrete Institute, Vol.27, No.2, pp.1183-1188, 2005.7

Compressive Failure 3-D FEM Analysis of Cylindrical Confined Concrete with the
Drucker-Prager Model [in Japanese] Yukio YOSHIDA, Shigemitsu HATANAKA and Eiji
MIZUNO*, J. Struct. Constr. Eng. AIJ, No.587，pp.155-162，2005.1
Main purpose of the present study is to discuss the effect of parameters (e.g. internal
friction angle and dilatancy angle) of the constitutive law of Drucker -Prager type on the result of
simulation analysis of confined concrete under compression. Two series of 3-D FEN analyses
have been carried out. Firstly, the optimum values of the internal friction angle and dilatancy
angle, used in the Drucker-Prager type plasticity model with the strain softening effect, havebeen discussed for a set of compressive strength data of concrete specimens with different shapes.
As a result, reasonable value as the internal friction angle has been found to be approximately 30
degrees for a condition of rather high equivalent lateral pressure. Secondly, simulation analyses
have been carried out for the compressive behavior of cylindrical concrete specimens confined bysteel tubes or reinforcing bars, introducing interface element and different values of the internal
friction angle. As a result, it has been pointed out that the distribution of equivalent confiningpressure along the longitudinal direction of a specimen and the progress of the degree of damage
in horizontal sections differ to a large extent by the value of internal friction angle applied.

Experimental Study on Influence of Pore Water Pressure on Shear Deformation of Fresh
Concrete [in Japanese] Gun-Cheol LEE*, Yasuo TANIGAWA*, Hiroshi MORI*, Yoshiyuki
KUROKAWA* and Naoki MISHIMA, J. Struct. Constr. Eng. AIJ, No.588，pp.7-12，2005.2
In this study, the rheological properties of fresh mortar and concrete were investigatedexperimentally by shear box test. The pore water pressure in fresh mortar and concrete wasmeasured as an influence factor of rheological properties of fresh concrete. The cohesion and thecoefficient of dynamic internal friction were represented from pore water pressure and shear

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stress measured in the experiment. As the result, it was clarified that the rheological properties
is affected by the pore water pressure in fresh mortar and concrete. Moreover, the correcting
method of shear stress in case of shear box test was obtained, and the cohesion and the coefficientof dynamic internal friction were quantified.

Effect of Mesh Size of Filter Mats and Vacuum Pressure Ratio on Quality of Vacuum Processed[in Japanese] Shigemitsu HATANAKA, Hiroshi WATO, Naoki MISHIMA and Akio
MURAMATSU*, J. Struct. Constr. Eng. AIJ, No.588，pp.13-19，2005.2
The strength and hardness of concrete slab surface is considered significantly affectedby bleeding of concrete. It has been reported that vacuum processing is quite effective to obtainhigh density of concrete. The method, however, has not been successfully used for the concrete
work in the field of building construction, compared with that of civil engineering works in Japan.
In the present study, as the sequence of the earlier experiment, two series of experiments havebeen carried out in order to examine the effect of mesh size of a filter mat and vacuum pressure
ratio. As a result, the internal strength distribution of concrete slab gets to be more preferable as
the mesh size becomes smaller and vacuum pressure ratio higher. Further, discussion has been
conducted, based on the experimental results including the earlier ones, in order to find morereasonable and effective way in the application of the proposed vacuum processing method.

Fundamental Study on Manufacturing Method of Large Particle Size Porous Concrete Using
Concrete Rubble and Applicability as Fishing Bank [in Japanese] Akihiro MAEGAWA,
Shigemitsu HATANAKA, Naoki MISHIMA and Yukihisa YUASA, J. Struct. Constr. Eng. AIJ,
No.589，pp.43-48，2005.3
To expand the usage of porous concrete, the authors have examined manufacturingmethod of large particle size porous concrete using concrete rubble. In the manufacture of large
particle size porous concrete, in stead of manufacturing with a mixer, the binder mortar was
sprayed on the upper surface of the concrete rubbles of every layer. The results obtained from thepresent study are as follows.
1. Recycling type large particle size porous concrete was producible by spraying method.
2. Void diameter located outside of the large particle size porous concrete can be presumed byusing a simple theoretical formula. Moreover，the void diameter can be controlled by adjusting
aggregate diameter, adhesion thickness of binder mortar, and number of aggregates.
3. Applicability of the large particle size porous concrete to the fishing bank for lobster was
sufficiently confirmed.

Experimental Study on Bleeding Behavior of Free Water in Mortar Based on the Visible
Evaluation Method [in Japanese] Toshitsugu INUKAI, Shigemitsu HATANAKA, NaokiNISHIMA and Rinji KANEKO*, J. Struct. Constr. Eng. AIJ, No.590，pp.1-7，2005.4
Main purpose of the present study is to examine the rising behavior (bleeding) of freewater in mortar by using a proposed visible evaluation method. A series of experiments of exp.1

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to 3 was carried out. In exp.1, rising path of colored liquid as free water injected into mortar wasobserved. In exp.2, effect of the volume of the injected colored liquid on its rising distance was
examined, and the behavior of the internal bleeding was idealized for modelling. In exp.3,
applicability of the proposed model was verified through the 2-dimensional visualization
experiment, using model materials. Consequently, it was shown by the devised visible evaluation
method that the internal bleeding behavior of mortar can be checked qualitatively. Moreover, therising process of the modeled free water showed clearly that the proposed method is applicable toactual mortar and concrete.

Fundamental Study on Rotating Criteria of Seismic Walls in Seismic Evaluation of Existing RC
Buildings [in Japanese] Shigemitsu HATANAKA, Yoshiyuki KATOU, Kenzo KUBOTA andYoshiro KOHAMA*, J. Struct. Constr. Eng. AIJ, No.590，pp.79-86，2005.4
Evaluation (screening) of the seismic performance of RC buildings has been widely
carried out in various ways mainly based on the manual issued by Japan Disaster Prevention
Association. According to results of the evaluation to date, failure mode of aseismic walls are apt
to be estimated as “rotation”, in spite of the fact that such failure mode has been hardly
recognized in the past disasters, except for the case of collapses due to uneven settlement or
liquifation of ground. In the present study, firstly the resisting mechanism of a structure against
rotating internal walls is analysed, using the result by “the 3rd-step aseismic evaluation
method” for a typical old building of 3 stories. Secondly, the effect of foundation piles on therotation bearing capacity of seismic walls is discussed. As a result, it is pointed out that the main
factors affecting the bearing capacity are resisting forces due to dead load, coupling beams,
transverse walls, and foundation piles. In order to change the failure mode of rotation intoanother one (bending or shear), however, combination of two or more resisting forces due to theabove factors is required.

Experimental Study on Effects of Binder Strength and Aggregate Size on Relationship between
Compressive Strength and Void Ratio of Porous Concrete [in Japanese] Shigemitsu HATANAKA,
Naoki MISHIMA and Yukihisa YUASA, J. Struct. Constr. Eng. AIJ, No.594，pp.17-23，2005.8
The authors have proposed an empirical formula for predicting the relationships
between compressive strength and void ratio of porous concrete in the earlier paper. Main
purpose of the present study is to discuss the effects of binder strength and aggregate size on thestrength-void ratio relationships, based on the experimental data. Two series of experiments
have been carried out, and the followings have been found. 1)The compressive strength of porous
concrete at a constant void ratio is dependent on the binder strength and the aggregate size,
while independent on the flow value of binder. 2)The earlier proposed formula for the predictionof compressive strength-void ratio relationships is found to be applicable to porous concrete
tested in the present study.

Study on Mechanism of Strength Distribution in Vacuum Processed Concrete Based on theConsolidation Theory [in Japanese] Shigemitsu HATANAKA, Hiroki HATTORI, Eisuke

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SAKAMOTO and Naoki MISHIMA, J. Struct. Constr. Eng. AIJ, No.596，pp.1-8，2005.10
The strength and hardness of concrete slab surface is considered significantly affectedby bleeding of concrete. It has been reported that dewatering by vacuum processing is quite
effective to make concrete high density and high strength. In the earlier report, the authors havealready pointed out that there is a strong relationship between the strength distribution anddensity distribution in the vacuum processed concrete, both gradually decreasing from the top
surface to about 15 cm depth of concrete. Main purpose of the present study is to discuss themechanism of the occurrence of such distribution of strength and density, based on consolidation
theory. The present paper reports the results of the investigation on the distribution ofingredients in mortar and concrete. Further, a prediction method for the strength improvementof concrete by vacuum processing is also discussed.

Uniaxial Compression FEM Analysis of Cylindrical Concrete with Strength Variation Due toBleeding [in Japanese] Yukio YOSHIDA, Eiji MIZUNO* and Shigemitsu HATANAKA, J. Struct.
Constr. Eng. AIJ, No.596，pp.71-78，2005.10
Purpose of the present study is to discuss the compressive failure state and theeffectiveness of internal friction angle used in the Drucker-Prager model, based on the uniaxial
compression 3-D FEM analysis of plain concrete with the strength variation due to bleeding. As aresult of analyses, which introduced the different values of internal friction angle (30 and 53
degree), it has been pointed out that 1) the failure zone along the longitudinal direction of
specimen shows tendency of proportional reduction with the increase in the size of a specimen,
and 2) the distribution of equivalent strain inside a specimen obtained from the analysis withinternal friction angle of 53 degree can represent the ordinary failure pattern.

Research on Stability of Fishing Bank Made by Large Particle Size Porous Concrete Placed
Under Sea [in Japanese] Akihiro MAEGAWA, Toshihiko SHAKOUCHI, Yukihisa YUASA, Naoki
MISHIMA and Shigemitsu HATANAKA, AIJ Journal of Technology and Design, No.22, 53-58,
2005.12In this report, the stability and applicability of fishing bank made by large particle size
porous concrete was examined in the large-scale waterway where wave and current can begenerated. It has been found that void of fishing bank decreases power of current and wave, andthe effect on wave energy is especially large.

Three-dimensional predictive analysis of ground vibrations produced by construction work,
Toshikazu HANAZATO, Norio TAGUCHI, Yoshiaki NAGATAKI and Yoshio IKEDA,
Environmental Vibrations : Prediction, Monitoring, Mitigation and Evaluation, pp381-384,2005
Construction of high-tech facilities that must be protected against vibrations bymachine, traffic and construction vibrations has been in great demand. In order to satisfy therequirement of performance of these facilities, it is needed to control the vibrations within theA－52

allowable limit being strict for precision instruments in buildings. This implies necessity fordevelopment of 3-dimensional dynamic soil-structure analysis that makes it possible toaccurately predict the vibrations transmitting from sources to structures via soils, as well as, toemploy it to develop the most suitable measures for reduction of vibrations. Therefore, we havedeveloped the analysis technique that combines 3-D FEM with thin layer method to predict the
ground vibrations produced by traffics, machines and construction operations. In the present
technique, 3-D finite element and thin layer models represent near-field including structure andfar-field, respectively.

Experimental Study on the Load-Deformation Characteristics of Concrete Filled Circular Steel
Tube Short Columns under Axial Compression Considering Size Effect, Takamasa YAMAMOTO,
Jun KAWAGUCHI and Shosuke MORINO [in Jaoanese], Journal Structural Construction
Engineering, AIJ, No. 592, 2005.6, pp. 193-200.
Behavior of a circular concrete-filled steel tube (CFT) short columns under axial
compression is influenced by the interactive effects between steel and concrete. This paper first
derives the constitutive equations of the concrete considering the triaxial stress state under theincremental lateral stresses. Second, the numerical formulas for predicting stress-strain behaviorof steel tube are proposed based on the experimental results. By using the obtained numericalformulas, the load-deformation behavior of a circular CFT short column under uniaxial
compression is predicted, considering the size effect.

Study on the Size Effect on Compressive Strength of Concrete Filled Square Steel Short Tube [inJapanese], Takamasa YAMAMOTO, Jun KAWAGUCHI, Shosuke MORINO and Sachio KOIKE,
Journal of Constructional Steel, Vol. 13, 2005.11, pp. 509 - 514.
Compression tests of square concrete filled steel tube (CFT) short columns have been
conducted to clarify the size effect on the compressive strength of square CFT columns. The
experimental variables were as follows: size of specimen, strength of filled concrete, wide
thikness ratio and loading methods (applying the compression load only on the plain concrete,
the filled concrete and on the overall cross-section). This paper first presents the test results
concerning compressive strength and discusses of the strength of square CFT short columns
considering the size and confining effects.

Study on the Improvement of Indoor Relative Humidity for Office Buildings during Heating
Operations in Winter [in Japanese], Shigehiro ICHINOSE, Kazunobu SAGARA,Yukio
ISHIKAWA,
Toshifumi
KOBAYASHI,
Genzaburou
FUKAYAandIkuya
KAWAKAMI,Transactions of the Society of Heating, Air-Conditioning and Sanitary Engineers ofJapan,No.100, pp.27-37, 2005

Study on Mixing Model for Temperature-stratified Thermal Storage Tank under Variable Input
Conditions in Actual Operation, Hiroaki KITANO, Takeshi IWATA and Kazunobu SAGARA*,

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Transactions of the Society of Heating, Air-Conditioning and Sanitary Engineers of Japan, No.96,
pp.31-40, 2005.1

Thermal performance of a solar cooker based on an evacuated tube solar collector with a PCM
storage unit, Someshower Dutt Sharma*, Takeshi IWATA, Hiroaki KITANO, Kazunobu
SAGARA*, Solar Energy, Vol.78, No.3, pp.416-426, 2005.3

Verification of Simple Design Method for Air-based Solar Heating System by System Simulation,
Hiroaki KITANO, Takeshi IWATA and Kazunobu SAGARA*, Journal of Japan Solar Energy
Society, Vol.31, No.4, pp.37-47, 2005.7