Feb. 2025, 2024年度インフラメンテナンス優秀論文賞, 公益社団法人土木学会 インフラメンテナンス総合委員会

Nov. 2021, 2021年度 AI・データサイエンス論文賞, 公益社団法人土木学会 構造工学委員会 構造工学でのAI活用に関する研究小委員会
Official journal

1996, 土木学会第51回年次学術講演会優秀講演賞, 土木学会

橋梁長寿命化修繕計画における既存橋梁の撤去および継続利用の評価手法に関する検討
尾場瀬 美綺; 原田 隆郎; 大﨑 康弘; 大久保 克紀, Corresponding
土木学会インフラメンテナンス実践研究論文集, Feb. 2025, [Reviewed]

The effect of deterioration damage due to aging on the soundness of steel flap gate
Yuki Tanaka; Takao Harada; Go Kanamori; Tomoaki Kuwashima, Corresponding
土木学会構造工学論文集, Mar. 2024, [Reviewed]

Basic study on rust appearance evaluation of weathering steel materials using feature amount extracted by CNN and dimensionality reduction visualization method
井上竜希,原田隆郎, Corresponding
AI・データサイエンス論文集, Nov. 2023, [Reviewed]

Investigation on cost reduction effect of partical repainting considering temporary coating
Munechika Kawamata; Takao Harada, Corresponding
土木学会構造工学論文集, 11 Apr. 2023, [Reviewed]

A BASIC STUDY ON IMPROVING VERSATILITY OF THE RUST CONDITION RATING MODEL FOR WEATHERING STEEL BY USING CONVOLUTIONAL NEURAL NETWORKS
Koo SASAKI and Takao HARADA, Corresponding
土木学会論文集, 28 Mar. 2023, [Reviewed]

BASIC STUDY ON RUST IMAGE GENERATION OF WEATHERING STEEL BY GENERATIVE ADVERSARIAL NETWORKS
Koichiro TAMURA and Takao HARADA, Corresponding
AI・データサイエンス論文集, 17 Nov. 2021, [Reviewed]

橋梁点検時における応急塗装の腐食抑制効果に関する実験的検討　　　　　　　　　　　　　　　
原田隆郎, Lead
土木学会構造工学論文集, Mar. 2020, [Reviewed]

フラクタル次元を用いた耐候性鋼材のさび形状評価に関する研究　　　　　　　　　　　　　　　
町田純平; 原田隆郎, Last
土木学会論文集F3（土木情報学）, Mar. 2020, [Reviewed]

供用中の鋼製起伏堰を対象とした実用的な更新計画の検討　　　　　　　　　　　　　　　
原田隆郎; 金森豪; 桑島智明, Lead
土木学会構造工学論文集, Mar. 2019, [Reviewed]

生体脈波を利用した歩道橋横断時の不快感評価に関する基礎的研究
原田隆郎; 横山功一, Lead, It is most important to propose the evaluation technique of the unpleasantness which a human body receives due to bridge vibration. In this study, the experiment to measure physiological information was performed in order to propose evaluation technique of serviceability of pedestrian bridges. In the experiment, the vibration of both pedestrian bridges and pedestrians were measured simultaneously, and the relation of both vibration characteristic and the biological pulse wave have been investigated. As the result, it is found that the Lyapunov exponent of biological pulse wave could be used as an index for evaluating the unpleasant bridge vibration which pedestrians feel., Japan Society of Civil Engineers
土木学会構造工学論文集, Mar. 2016, [Reviewed]

PVDFフィルムセンサによるひび割れ検知に関する研究
原田隆郎; 横山功一; 田名部菊次郎, Lead, Structural monitoring with various sensors has been used as a quick quantifying of damages of infrastructures. In this paper, a strain measurement using piezoelectric PVDF (polarized polyvinylidene fluoride) film is studied. First, sensing performance of the PVDF film on static measurement was compared with traditional strain gages. A PVDF film sensor for crack detection was developed. The crack progress on an aluminum specimen was monitored with the developed PVDF film sensor. Moreover, the PVDF film sensor has been used to monitor the initiation and propagation of cracks on RC specimens., Japan Society of Civil Engineers
土木学会構造工学論文集, Mar. 2013, [Reviewed]

生体脈波を用いた道路の乗り心地評価に関する基礎的研究
原田隆郎; 横山功一, Lead, In this study, the methodology to evaluate a road riding comfort was proposed by using biological pulse wave. The road riding comfort was defined by Lyapunov exponent calculated from biological pulse wave of driver and passenger during vehicles running. Through some experiment, it was found that the biological pulse wave was effective as the way of adopting human sensuous evaluation in order to estimate influence of the road riding comfort. And how to use the road riding comfort index was examined for road asset management. It could confirm that the riding comfort of every road could be distinguished by using biological pulse wave relatively., Japan Society of Civil Engineers
土木学会論文集F4（建設マネジメント）, 20 Apr. 2012, [Reviewed]

横断歩道橋の支柱に生じたき裂損傷の原因調査と対策
三木千壽; 小野 潔; 横山功一; 原田隆郎, A Serious fracture that extended halfway through the circumference of a steel pipe column was discovered in a pedestrian bridge across a prefectural road. A lot of pedestrian bridges have been designed and constructed according to the standard specifications. Therefore, there is a possibility that pedestrian bridges whose structural details are the same as those of fractured pedestrian bridges in this paper may exist. It is very important to identify the cause of the fracture for preventing the same failure mode.
  In order to identify the cause of the fracture, observation of crack surface, SEM observation, material property tests, measurement of strain and calculating histogram of the stress range and the frequency were carried out. Moreover, the fractured steel pipe column of the pedestrian bridge was retrofitted by applying bolted splice rings and plates., Japan Society of Civil Engineers
土木学会論文集A, 2009, [Reviewed]

ニューラルネットワークを用いた橋脚の地震時リアルタイム損傷判定法に関する検討
横山功一; 原田隆郎; 黒田 聡; A.K.M; Rafiquzzaman, It is expected that damages of transportation system including highway bridges cause serious interference of traffic function and recovery efforts, when a large earthquake occurs to a densely populated urban area as it was happened during the great Hanshin Awaji Earthquake in 1995. Therefore, the real-time earthquake damage detection system for bridge structures seems to be necessary to provide information of damages in transportation network system just after the occurrence of the earthquake and to assist the damage reduction, prevention of damage expansion and recovery works. This research proposes the method of evaluating the damages of bridge pier to provide useful information for real-time earthquake damage detection system by using Neural Networks technique. In this study, the emulator was constructed first to express intact structure by using Neural Networks. Then, it was examined whether the difference between output of the emulator and measured response of the bridge pier showed the damages of the bridge structure. Dynamic experimental data which were acquired at the shaking table test of RC single column conducted by Public Works Research Institute, Tsukuba, were used to verify the proposed method. Amplitude ratio and phase difference were selected to show the difference between output of the emulator and measured response of the bridge pier. As a result, it was confirmed that these two indices corresponded well to the damages, namely the change in the natural frequencies and the damping constant. The proposed method is able to provide the useful information for damages more quickly than frequency domain analysis method., JAPAN ASSOCIATION FOR EARTHQUAKE ENGINEERING
日本地震工学論文集, Jul. 2007, [Reviewed]

構造ヘルスモニタリングにおけるひずみ測定の温度影響の補正に関する研究　　　　　　　　　　　　　　　
町口敦志; 横山功一; 原田隆郎; 高木優任
構造工学論文集, Mar. 2007, [Reviewed]

Cost evaluation in bridge inspection strategies by using real options method
Harada; T. and Yokoyama; K., Lead, To support expensive bridge inspection by the human being, bridge monitoring technique for damages such as crack, fatigue and corrosion has already been introduced. But, the cost evaluation of the bridge inspection strategies in consideration of the bridge monitoring has not discussed enough in current situation. In this study, the cost evaluation method for bridge inspection alternative by using Real Options method has been proposed. Then, by the proposed cost evaluation method considering the change of inspection cost in the future, the role of monitoring of bridge inspection has been discussed., TAYLOR & FRANCIS LTD
Life-Cycle Cost and Performance of Civil Infrastructure Systems, 2007, [Reviewed]

Performance of a BOTDR optical fibre sensing technique for crack detection in concrete structures
Wu; Z. S.; Xu; B.; Takahashi; T. and Harada; T, Strain distribution measurements and problematic crack detection are important issues in the damage detection and performance evaluation of concrete, or reinforced concrete, structures. In recent years, the Brillouin Optical Time Domain Reflectometry (BOTDR) based optical fibre sensing technique has attracted great attention as a distributed monitoring method. Current BOTDR instruments are suitable for strain measurements over a certain distance (termed spatial resolution), but damage such as cracks in concrete structures are local. It is crucial to find an effective method to detect local damage in concrete. In this study, two basic optical fibre installation methods, overall bonding (OB) installation and point fixation (PF) installation, are proposed. Then, several unique installation methods (one-round, one-round superposition and two-round superposition) are proposed and investigated experimentally for a reinforced concrete bending beam. The efficiency of the proposed installation methods and the effect of the length of the sensing region on the measurement accuracy are also discussed. Experimental results show that the n-round superposition installation method can effectively and correctly detect the total crack width within a relatively local region. The performance of the overall bonding and point fixation installation methods with different sensing region lengths, or gauge lengths, for local crack initiation and total crack width measurement is also discussed., TAYLOR & FRANCIS LTD
Journal of Structure and Infrastructure Engineering, Nov. 2006, [Reviewed]

Electrical and Mechanical Characterization of Hybrid CFRP Sheets
Wu; Z.S.; Yang; C.Q.; Tobe; Y.; Ye; L.P. and Harada; T., This study brings forth the electrical and mechanical models of a new kind of hybrid carbon fiber-rein forced polymer (HCFRP) composites consisting of several types of carbon fibers with different strengths and Young's moduli. Then, an experimental program with some main variables including the carbon fiber types and their volume fractions has been carried out. Six types of specimens have been fabricated to investigate the mechanical properties and self-health monitoring function of the HCFRP sheets with different types of carbon fiber and volume fractions. The experimental results indicate that the hybridization of several types of carbon fibers is an effective method for upgrading the mechanical properties of the HCFRP sheets. The electrical resistance of the HCFRP sheets changes with the strain in a stepwise manner due to the gradual macro-fracture of different types of carbon fibers. The number of steps is related to the number of carbon fiber types. It has also been shown that the ruptured carbon fibers can still contribute to the current conduction through transverse electrical conduction. The good correlations between the mechanical and electrical behaviors reveal the self-health monitoring function of the HCFRP sheets., SAGE PUBLICATIONS LTD
Journal of Composite Materials, Feb. 2006, [Reviewed]

Structural health monitoring in a tunnel management system
Harada; T.; Miyazawa; S. and Wu; Z.S., Lead, The concrete block falling accident in the railway tunnel made the maintenance of tunnel structures an emergency problem in Japan. The present work of tunnel management cannot meet the needs for management of tunnel structures because of lack of systematizing. On the other hand, the development of decentralized management of data, utilization of advanced sensing technology like optical fiber, and improvement in network technology make it possible to update the present work of tunnel management. In this paper, a Tunnel Management System (TMS) is proposed with the support of these advanced technologies. And, this study developed a seamlessly real network and designed a remote monitoring system in TMS with advanced functions., SOUTHEAST UNIV PRESS
Proc. of International Symposium on Innovation & Sustainability of Structures in Civil Engineering - Including Seismic Engineering, Nov. 2005, [Reviewed]

An Experimental Study on the Measuring Characteristic of BOTDR for Structure Health Monitoring　　　　　　　　　　　　　　　
Wu; Z.S.; Shi; B.; Harada; T. Ishii; T. and Xu; B
China Civil Engineering Journal, Aug. 2005, [Reviewed]

Self-diagnosis of structures strengthened with hybrid carbon-fiber-reinforced polymer sheets
Wu; Z.S.; Yang; C.Q.; Harada; T. and Ye; L.P., The correlation of mechanical and electrical properties of concrete beams strengthened with hybrid carbon-fiber-reinforced polymer (HCFRP) sheets is studied in this paper. Two types of concrete beams, with and without reinforcing bars, are strengthened with externally bonded HCFRP sheets, which have a self-structural health monitoring function due to the electrical conduction and piezoresistivity of carbon fibers. Parameters investigated include the volume fractions and types of carbon fibers. According to the investigation, it is found that the hybridization of uniaxial HCFRP sheets with several different types of carbon fibers is a viable method for enhancing the mechanical properties and obtaining a built-in damage detection function for concrete structures. The changes in electrical resistance during low strain ranges before the rupture of carbon fibers are generally smaller than 1%. Nevertheless, after the gradual ruptures of carbon fibers, the electrical resistance increases remarkably with the strain in a step-wise manner. For the specimens without reinforcing bars, the electrical behaviors are not stable, especially during the low strain ranges. However, the electrical behaviors of the specimens with reinforcing bars are relatively stable, and the whole range of self-sensing function of the HCFRP-strengthened RC structures has realized the conceptual design of the HCFRP sensing models and is confirmed by the experimental investigations. The relationships between the strain/load and the change in electrical resistance show the potential self-monitoring capacity of HCFRP reinforcements used for strengthening concrete structures., IOP PUBLISHING LTD
Smart Materials and Structure, Jun. 2005, [Reviewed]

A soft post-earthquake damage identification methodology using vibration time series
Xu; B.; Wu; Z.S.; Yokoyama; K. and Harada; T., A neural-network-based post-earthquake damage identification methodology for smart structures with the direct use of vibration measurements is developed. Two neural networks are constructed to facilitate the process of post-earthquake damage identification. The rationality of the proposed methodology is explained and the theory basis for the construction of an emulator neural network (ENN) and a parametric evaluation neural network (PENN) are described according to the discrete time solution of the structural state space equation. An evaluation index called the root mean square of the prediction difference vector (RMSPDV) is presented to evaluate the condition of different associated structures. Based on the trained ENN, which is a non-parametric model of the object structure in a healthy state, and the PENN that describes the relation between structural parameters and the components of the corresponding RMSPDVs, the inter-storey stiffness of the damaged object structure is identified. The accuracy, sensibility and efficacy of the proposed strategy for different ground excitations are also examined using a multi-storey shear building structure by numerical simulations. Since the methodology does not require the extraction of structural dynamic characteristics such as frequencies and mode shapes from measurements, it has the potential of being a practical tool for health monitoring of smart engineering structures., IOP PUBLISHING LTD
Smart Materials and Structure, Jun. 2005, [Reviewed]

Optimization of maintenance strategies for road pavement by considering flexibility of alternatives
Harada; T. and Yokoyama; K., Lead, Maintenance strategy might be changed in future due to uncertainty included in cost of maintenance and operation, degradation of infrastructure, budget, change of social system, technology innovation and so forth. The present value (PV) method commonly used for alternative evaluation cannot consider uncertainty that is expected to occur in future. On the other hand, real options (RO) method is new technique that can consider the value of flexibility of alternative. In this study, optimization system of maintenance strategies for road pavement by using real options has been developed. Through the numerical simulations on road pavement, it was confirmed that the alternatives which have flexibility more abundantly were drawn as optimum solution by considering of option values., Japan Society of Civil Engineers
Proc. of 4th International Workshop on Life-Cycle Cost Analysis and Design of Civil Infrastructure Systems, May 2005, [Reviewed]

計画案のフレキシビリティを考慮した道路舗装の維持管理計画策定システムの開発
原田隆郎; 吉田勘平; 横山功一, Lead, Maintenance strategy might be changed in future due to uncertainty included in cost of maintenance and operation, degradation of infrastructure, budget, change of social system, technology innovation and so forth. The present value (PV) method commonly used for alternative evaluation cannot consider uncertainty that is expected to occur in future. On the other hand, real options (RO) method is new technique that can consider the value of flexibility of alternative. In this study, optimization system of maintenance strategies for road pavement by using real options has been developed. Through the numerical simulations on road pavement, it was confirmed that the alternatives which have flexibility more abundantly were drawn as optimum solution by considering of option values., Japan Society of Civil Engineers
土木学会舗装工学論文集, Dec. 2004, [Reviewed]

Applying Moving Vehicle Load to Structural Identification and Health Monitoring of Bridges　　　　　　　　　　　　　　　
Rafiquzzaman; A.K.M.; Yokoyama; K.; Yoshizawa; E. and Harada; T
Second International Workshop on Structural Health Monitoring of Innovative Civil Engineering Structures, Sep. 2004, [Reviewed]

鋼合成桁の温度分布に影響を及ぼす環境要因に関する実験的研究　　　　　　　　　　　　　　　
高木優任; 横山功一; 原田隆郎
構造工学論文集, Mar. 2004, [Reviewed]

In-situ damage detection of concrete beams strengthened with hybrid CFRP sheets by DC electrical resistance
Wu; Z.S.; Yang; C.Q.; Harada; T. and Tobe; Y., In this paper, the mechanical and electrical behaviors of strengthened concrete beams with a new kind of hybrid carbon fiber reinforced polymers (HCFRP) sheets of several kinds of carbon fibers are investigated. The main purpose is to find out the self-health monitoring function of concrete beams externally strengthened with HCFRP through DC electrical resistance measurement. An experimental program with the main parameters including the volume fractions of high modulus (HM) carbon fibers and fiber types has been performed. According to the experimental results, it is revealed that the hybridization of unidirectional HCFRP with different kinds of carbon fibers is a viable method of upgrading mechanical properties and obtaining a built-in in-situ damage detection functions for concrete structures. In a small strain range, the resistance becomes more and more negative as cyclic loading progresses for the specimens with more amount of HM; however, the electrical resistance keeps almost constant for the specimens with less amount of HM. In a high strain ranges, the resistance changes in a step-wise manner, and the sudden steps are attributed to the bundle rupture of HM. Good corresponding relationship between load and the change in resistance reveal the potential damage detection feasibility of FCFRP strengthened beams. In addition, it is shown that the ultimate failure modes change from CFRP debonding to concrete rupture with the increase of C7., A A BALKEMA PUBLISHERS
First International Conference on Structural Health Monitoring and Intelligent Infrastructure (SHMII-1'2003), Nov. 2003, [Reviewed]

都市インフラに関する構造ヘルスモニタリングの現状と展望－展望論文－
呉 智深; 許 斌; 原田隆郎, Last, 土木学会
土木学会応用力学論文集, Aug. 2003, [Reviewed], [Invited]

外部環境の変化がインテグラル複合ラーメン橋の挙動に及ぼす影響に関する検討　　　　　　　　　　　　　　　
高木優任; 横山功一; 原田隆郎
鋼構造論文集, Jun. 2003, [Reviewed]

橋梁の補修履歴データによる補修率曲線の同定
原田隆郎; 横山功一, Lead, Repair hysteretic data of the highway bridges is not effectively used in management system for the reason that repair hysteretic data is not accumulated enough. However, repair hysteretic data is effective information for planning of maintenance strategies. This study analyzed the relationship of repair frequency to the accumulated track traffic volume by using repair hysteretic data. Moreover, repair rate curve was identified by applying analytical results to logistic curve. In addition, long-term maintenance strategies were suggested by using the repair rate curves., Japan Society of Civil Engineers
土木学会論文集, Jun. 2003, [Reviewed]

静的な応答による構造システムの剛性劣化に関する分散化構造同定法
原田隆郎; 呉 智深; 市來佐都子, Lead, 土木学会
構造工学論文集, Mar. 2002, [Reviewed]

ニューラルネットワークによる道路舗装の補修計画最適化モデル
原田隆郎; 呉 智深; 吉田典史; 岩松幸雄, Lead, 土木学会
土木学会論文集, Mar. 2002, [Reviewed]

遺伝的アルゴリズムの階層化による橋梁の維持管理計画モデルの開発
原田隆郎; 富田義紀; 横山功一, Lead, Recently, due to the increasing maintenance expense for road and bridge structures, it is urgently demanded to draw up maintenance strategies more economically. In this study, proposed was to make maintenance strategies of highway bridges by using multi-layer GA. Through the numerical simulations, the following conclusions are obtained; 1) The proposed GA model can successfully achieve the escape from the local minimum; 2) This model is effective for making maintenance strategies of highway bridges., Japan Society of Civil Engineers
土木情報システム論文集, Oct. 2001

Adaptive Localized Control of Structure-Actuator Coupled System using Multi-layer Neural Networks
Xu; B.; Wu; Z. S.; Yokoyama; K. and Harada; T., 土木学会
Journal of Structural Mechanics and Earthquake Engineering, JSCE, Jul. 2001, [Reviewed]

Decentralized Control of a Cable-stayed Bridge Using Multi-layer Neural Networks
Xu; B.; Wu; Z. S.; Yokoyama; K. and Harada; T., The structural identification and dynamic control of a cable-stayed bridge are considered to be difficult due to the structural complicacy and system uncertainties. In this paper, based on the concept of decentralized information structures, a decentralized non-parametric identification and control method is proposed with neural networks for the purpose of suppressing the vibration of a well-studied and documented two-cable-stayed bridge induced by earthquake excitations. The control strategy proposed here uses the stay cables as active tendons to provide control forces through appropriate actuators. Each individual actuator is controlled by a decentralized neuro-controller that only uses local velocity and relative displacement information. The feature of decentralized control simplifies the implementation of the control algorithms and makes decentralized control easy to practice and cost effective. The effectiveness of the decentralized identification and control algorithm is evaluated through numerical simulations. The performance of the decentralized control is compared with that of the linear decentralized control method. And the adaptability of the decentralized neuro-controllers for different kinds of earthquake excitations is demonstrated via simulations., JAPAN SOCIETY FOR COMPUTATIONAL ENGINEERING AND SCIENCE
Transactions of JSCES, May 2001, [Reviewed]

静的な応答による複雑構造システムの剛性劣化に関する離散化構造同定法
呉 智深; 市來佐都子; 原田隆郎, 土木学会
応用力学論文集, Aug. 2000

固有振動数の変化による大型構造システムの局所劣化同定法の提案　　　　　　　　　　　　　　　
呉 智深; 原田隆郎; 三宅博之
構造工学論文集, Mar. 2000

遺伝的アルゴリズムによる大規模既存道路橋の耐震補強計画支援モデルの構築　　　　　　　　　　　　　　　
呉 智深; 原田隆郎; 横山功一
構造工学論文集, Mar. 1998, [Reviewed]

Genetic Algorithms-based reinforcement strategies for large scale deteriorating road bridges
Wu; Z. S.; Harada; T. and Sato; F., In this paper. to establish a rational strengthening strategy for large-scale old and weak earthquake-resistant existing structures, a conceptual framework for evaluating the importance factor is developed. Then, based on the importance analysis, a general framework of strengthening strategies for large-scale bridge structures is formulated as a constrained, nonlinear optimum problem in which the total strengthening efficacy for different bridge and its different component level receive maximum within the total budget. The Genetic Algorithms are introduced to solve the optimization problem. Some efforts are made for investigating the performances and adaptabilities of different kind of Genetic Algorithms. To assess the performance of the estimator, some numerical simulations and a real investigation on existing road bridges within the area of Ibaraki prefecture are carried out. Finally, a computerized prioritization algorithm to assign a quantified ranking for retrofit and budget distribution is suggested., TECHNO-PRESS
Proc. of 7th Int. Conf. on Computing in Civil and Building Engineering, Aug. 1997, [Reviewed]

Optimum modeling for maintenance planning of road pavements using Hopfield Neural Network
Wu; Z. S.; Yoshida; N.; Harada; T. and Iwamatsu, To design an optimum maintenance program, in this paper, a methodology combined with the analysis both in space and in time scales is proposed based on optimization methods. In the optimum modeling, an objective function that takes into account the total value of assembly of existing road pavements during a projected service period is used, by keeping the damage levels of ail units of road pavements at or below an established target value (a threshold value of damage). The Hopfield neural network is used to search for the solution as a minimizator in the optimization procedure. As an illustration, the methodology is applied to some road pavement systems that are designed for simulation. Finally, a real road pavement system located in Niigata prefecture is also investigated. In detail we discussed about optimum maintenance distance as a unit and maintenance-cycle., TECHNO-PRESS
Proc. of 7th Int. Conf. on Computing in Civil and Building Engineering, Aug. 1997, [Reviewed]

Computational modeling on parameter estimation of large scale structures from static responses　　　　　　　　　　　　　　　
Wu; Z. S.; Iwamatsu; S. and Harada; T.
Proceedings of the 3rd Asian-Pacific Conference on Computational Mechanics, Sep. 1996, [Reviewed]

フラクタル次元・１／ｆゆらぎを応用した橋梁の景観性評価支援システム
吉岡正泰; 岩松幸雄; 原田隆郎; 阿久澤孝之, Recently, consideration of the aesthetic evaluation into the process of bridge design has been increasingly important to make bridges harmonize with the surrounding environment and give "the grace and relief" to the human minds. However, there are not any aesthetic indices used commonly in bridge design, because it is difficult to evaluate aesthetic sense of human being quantitatively.
In this study, we constructed an aesthetic evaluation system for selection of type of bridge by the fuzzy sets theory, in which concepts of fractal dimension and 1/f fluctuation are used to quantify the aesthetic level of designed bridges. The application of this system to actually designed bridges indicate that the concepts were useful for the aesthetic evaluation., Japan Society of Civil Engineers
土木情報システム論文集, Oct. 1993, [Reviewed]

橋梁の比較設計支援エキスパートシステムに関する研究
岩松幸雄; 早川裕史; 原田隆郎, In recent years, the computering in civil engineering had been applied not only in CAD but also in Expert System. But, they did not need a synthetic knowledges and experience of a designer such as comparative design which is judged a whole bridge by plural elements, and deviated from primary mean of Expert System or Artificial Intelligence. In this paper, we picked up superstructure, substructure, and fundamental structure of bridge as the object of this study, and proposed Expert System which introduced plural estimated elements which economics, workability, adaptablity to environment and so on. And the efficiency of the proposed system is demonstrated by the comparison between the result of this system and the past actual example of comparative., Japan Society of Civil Engineers
土木学会論文集, Sep. 1992, [Reviewed]

道路構造物の維持管理システムに関する研究
岩松幸雄; 早川裕史; 原田隆郎, 土木学会
土木学会論文集, Mar. 1992, [Reviewed]

Development of Bridge Inspection System by Using Wireless Network Technologies　　　　　　　　　　　　　　　
Harada; T. and Yokoyama; K.
The 4th International Workshop on Advanced Smart Materials and Smart Structures Technologies, Tokyo, Japan, 2008
Lead

Development of Sharing-Type Genetic Algorithm for Optimum Maintenance Strategies　　　　　　　　　　　　　　　
Harada; T. and Yokoyama; K.
Joint 4th International Conference on Soft Computing and Intelligent System and 9th International Symposium on Advanced Intelligent Systems, 2008, [Reviewed]
Lead

Structural Monitoring using Piezoelectric Film　　　　　　　　　　　　　　　
Yokoyama; K. and Harada; T.
Proceedings of the 24th US-Japan Bridge Engineering Workshop, Ninneapolis, Minnesota, USA, 2008

Condition-based Inspection of Highway Bridges　　　　　　　　　　　　　　　
Yokoyama; K.; Harada; T. and Rafiquzzaman; A.K.M.
The International Symposium on Advances in Urban Safety, 2007

計画案のフレキシビリティを考慮した道路舗装の維持管理計画策定手法の提案
原田隆郎; 濱野祐樹; 横山功一
茨城大学工学部研究集報, Feb. 2004, [Reviewed]
Lead

インテグラルアバットメント橋の温度影響と設計法の検討
横山功一; 原田隆郎; 熊本ゆかり
茨城大学工学部研究集報, Feb. 2003, [Reviewed]

周辺温度環境の変化がインテグラルアバットメント橋に及ぼす影響に対する検討
横山功一; 原田隆郎; 土屋嘉則
茨城大学工学部研究集報, Feb. 2001, [Reviewed]

老朽化に伴う劣化損傷が鋼製起伏堰の健全性に及ぼす影響の検討　　　　　　　　　　　　　　　
田中佑樹,原田隆郎,金森豪,桑島智明
土木学会第70回構造工学シンポジウム, 14 Apr. 2024

CNNにより抽出した特徴量と次元削減可視化手法を用いた耐候性鋼材のさび外観評価に関する基礎的研究　　　　　　　　　　　　　　　
井上竜希,原田隆郎
土木学会 第4回 ＡＩ・データサイエンスシンポジウム, 16 Nov. 2023

軽量プレキャスト合成床版を用いた桁端部のグループスタッド配置における合成挙動　　　　　　　　　　　　　　　
河西健太,原田隆郎,山本将士,木村恭介,鬼満悠
土木学会第78回年次学術講演会，VI-722, 15 Sep. 2023

応急塗装を考慮した部分塗替え塗装のコスト縮減効果に関する検討　　　　　　　　　　　　　　　
川又宗近,原田隆郎
土木学会第69回構造工学シンポジウム, 16 Apr. 2023

畳み込みニューラルネットワークによる耐候性鋼材のさび外観評点判定モデルの汎用性向上に関する検討　　　　　　　　　　　　　　　
佐々木輝音,原田隆郎
土木学会第47回土木情報学シンポジウム, 29 Sep. 2022

軽量プレキャスト合成床版を用いた床版取替工事における鋼桁補強数量の低減効果の解析的検討　　　　　　　　　　　　　　　
鬼満悠,原田隆郎,大柳英之
土木学会第77回年次学術講演会，VI-356, 15 Sep. 2022

応急塗装を考慮した部分塗替え塗装のコスト縮減効果に関する検討　　　　　　　　　　　　　　　
川又宗近,原田隆郎
土木学会第77回年次学術講演会，VI-390, 15 Sep. 2022

現地踏査結果に基づく老朽化した鋼製起伏堰の健全性に関する解析的検討　　　　　　　　　　　　　　　
皆川将尉,原田隆郎,金森豪,桑島智明,根本諒介
土木学会第77回年次学術講演会，VI-376, 15 Sep. 2022

敵対的生成ネットワークを用いた耐候性鋼材のさび画像生成に関する基礎的研究　　　　　　　　　　　　　　　
田村晃一郎,原田隆郎
土木学会 第2回 ＡＩ・データサイエンスシンポジウム, 17 Nov. 2021

敵対的生成ネットワークを用いた耐候性鋼材のさび画像生成に関する基礎的研究　　　　　　　　　　　　　　　
田村晃一郎,原田隆郎
土木学会第76回年次学術講演会，CS14-50, 10 Sep. 2021

複数回の定期点検データを用いた橋梁部材の劣化予測に関する検討　　　　　　　　　　　　　　　
市川奈央子,原田隆郎
土木学会第76回年次学術講演会，VI-719, 10 Sep. 2021