牧 剛史(マキ タケシ)
理工学研究科 環境社会基盤部門教授
工学部 環境社会デザイン学科

研究者情報

■ 研究分野
  • 社会基盤(土木・建築・防災), 構造工学、地震工学
■ 経歴
  • 2018年04月 - 現在, 埼玉大学, 大学院理工学研究科, 教授
  • 2007年04月 - 2018年03月, 埼玉大学, 大学院理工学研究科, 准教授
  • 2006年04月 - 2007年03月, 埼玉大学, 大学院理工学研究科, 助教授
  • 1997年04月 - 2006年03月, 埼玉大学, 工学部, 助手, 日本国
■ 学歴
  • 1995年04月 - 1997年03月, 東京大学, 大学院工学系研究科修士課程, 社会基盤工学専攻, 日本国
  • 1993年04月 - 1995年03月, 東京大学, 工学部, 土木工学科, 日本国

業績情報

■ 論文
  • Strain based damage indicators for finite element analysis of reinforced concrete structures               
    Shigehiko Saito; Takeshi Maki; Satoshi Tsuchiya; Tadatomo Watanabe
    Structures, 巻:58, 開始ページ:105473, 終了ページ:105473, 2023年12月, [査読有り]
    Elsevier BV, 英語, 研究論文(学術雑誌)
    DOI:https://doi.org/10.1016/j.istruc.2023.105473
    DOI ID:10.1016/j.istruc.2023.105473, ISSN:2352-0124
  • Flexural Behavior of Precast Concrete Slab Connections using Loop Steel Bars and Mortar
    Quang-Thinh Nguyen; Takeshi Maki; Hiroshi Mutsuyoshi; Yosuke Ishihara
    Journal of Advanced Concrete Technology, 巻:21, 号:6, 開始ページ:436, 終了ページ:449, 2023年06月, [査読有り]
    Japan Concrete Institute, 英語, 研究論文(学術雑誌)
    DOI:https://doi.org/10.3151/jact.21.436
    DOI ID:10.3151/jact.21.436, ISSN:1346-8014, eISSN:1347-3913
  • Effect of Joint Flexibility on Seismic Performance of a Reinforced Concrete Ductile Moment-Resisting Frame
    Dagvabazar Gombosuren; Takeshi Maki
    Advances in Materials Science and Engineering, 巻:2022, 開始ページ:1, 終了ページ:21, 2022年12月, [査読有り]
    Currently, the seismic collapse risk of modern code-conforming reinforced concrete (RC) frame structures is often evaluated without considering the behavior of the beam-column (BC) joints since joints designed to meet modern concrete design codes are assumed to be sufficiently rigid. BC joints in RC ductile moment frames may undergo a significant amount of inclined cracking during strong earthquakes. Consequently, the stiffness, strength, and dynamic characteristics of the RC moment frames may vary. Hence, the rigid joint assumption may be unsuitable for assessing the seismic performances of RC ductile moment frames because the local strength and ductility demands of the constituent members can be misinterpreted by structural analyses based on the assumption of a rigid joint. In this study, nonlinear static and dynamic analyses are conducted to quantify the seismic response variations of low- to midrise RC-frame structures under different joint modeling assumptions. In total, six 2D continuum finite element models of four- and eight-story frames with rigid and flexible joints were constructed by simulating the actual structures as realistically as possible. The results indicate that the interior joints in the considered frames suffer light-to-moderate damage, and the effect of joint cracking is found to be significant in a four-story structure whose column-to-beam flexural strength ratio and column-to-beam area ratio are below 1.5. Such joint behavior demonstrates that current code provisions cannot ensure joint behavior compatible with the rigid joint assumption that is used in the practical structural analysis of RC-frame buildings.
    Hindawi Limited, 研究論文(学術雑誌)
    DOI:https://doi.org/10.1155/2022/6858283
    DOI ID:10.1155/2022/6858283, ISSN:1687-8434, eISSN:1687-8442
  • Investigation into vibration-based structural damage identification and amplitude-dependent damping ratio of reinforced concrete bridge deck slab under different loading states
    Sania Gohar; Yasunao Matsumoto; Takeshi Maki; Satoru Sakuma
    Journal of Civil Structural Health Monitoring, 巻:13, 号:1, 開始ページ:133, 終了ページ:148, 2022年09月, [査読有り]
    Springer Science and Business Media LLC, 英語, 研究論文(学術雑誌)
    DOI:https://doi.org/10.1007/s13349-022-00625-w
    DOI ID:10.1007/s13349-022-00625-w, ISSN:2190-5452, eISSN:2190-5479
  • Effects of fines content and maximum particle size on mechanical properties and saturated hydraulic conductivity of recycled concrete aggregates for unbound roadbed materials in Vietnam
    Hong Nam Thai; Akira Kato; Hoang Giang Nguyen; Tien Dung Nguyen; Ton Kien Tong; Van Tuan Nguyen; Taro Uchimura; Takeshi Maki; Ken Kawamoto
    Japanese Geotechnical Society Special Publication, 巻:9, 号:6, 開始ページ:239, 終了ページ:244, 2021年10月, [査読有り]
    The Japanese Geotechnical Society, 英語, 研究論文(学術雑誌)
    DOI:https://doi.org/10.3208/jgssp.v09.cpeg116
    DOI ID:10.3208/jgssp.v09.cpeg116, eISSN:2188-8027
  • Effects of particle size and type of aggregate on mechanical properties and environmental safety of unbound road base and subbase materials: A literature review               
    Thai, H. N.; Kato, A.; Nguyen, H. G.; Nruyen, T. D.; Tong, T. K.; Nguyen, V. T.; Uchimura, T.; Maki, T.; Kawamoto, K.
    International Journal of GEOMATE, 巻:20, 号:78, 開始ページ:148, 終了ページ:157, 2021年02月, [査読有り]
    英語
  • Prediction of Joint Shear Deformation Index of RC Beam–Column Joints
    Dagvabazar Gombosuren; Takeshi Maki
    Buildings, 巻:10, 号:10, 開始ページ:176, 終了ページ:176, 2020年10月, [査読有り]
    In the analysis of reinforced concrete (RC) buildings, beam–column joints are regarded as rigid nodes. In fact, joint deformation may make a significant difference in the lateral response of RC buildings if joints are not properly designed and detailed. To consider joint flexibility, several types of joint models have been proposed. However, these models require complicated computations, consequently making them challenging to apply in engineering practice. This paper proposed a simple approach for predicting the contribution of the joint deformation to the total deformation of RC interior beam–column joints under critical structural deformations. To develop such a simple and accurate approach, experimental and analytical studies were performed on RC interior beam–column joints. In this study, eight half-scale joint specimens were tested under reversed cyclic loading, and 39 full–scale FE models were constructed, varying the selected key parameters. The experimental and analytical results showed that the “joint shear” is a useful index for the beam–column joints with high shear stress levels of vj>1.7 fc′ but is unsuitable for defining the failure of beam–column joints with medium or low shear stress levels of vj≈1.25–1.7fc′ and vj≈1.0fc′. Based on the results, three equations were developed to predict the joint shear deformation index (SDI) of RC interior beam–column connections corresponding to three different types of failure (i.e., joint failure before beam yielding, joint failure after beam yielding, and beam flexural failure). SDI predictions of the proposed equations correlate well with 50 test results of beam–column joints available from the literature.
    MDPI AG, 英語, 研究論文(学術雑誌)
    DOI:https://doi.org/10.3390/buildings10100176
    DOI ID:10.3390/buildings10100176, eISSN:2075-5309
  • Influence of reinforcement arrangement details on mechanical behavior of precast concrete barrier with loop connection               
    S. Basit; T. Maki; H. Mutsuyoshi; Y. Ishihara; H. Tajima
    Structures, 巻:27, 開始ページ:1682, 終了ページ:1692, 2020年10月, [査読有り]
    Elsevier BV, 英語, 研究論文(学術雑誌)
    DOI:https://doi.org/10.1016/j.istruc.2020.08.003
    DOI ID:10.1016/j.istruc.2020.08.003, ISSN:2352-0124
  • Experimental study on time-dependent deformation of hybrid steel–PRC girder with headed stud shear connections under sustained loading               
    Mohammad Najmol Haque; Takeshi Maki
    Structures, 巻:22, 開始ページ:327, 終了ページ:340, 2019年12月, [査読有り]
    Elsevier BV, 英語, 研究論文(学術雑誌)
    DOI:https://doi.org/10.1016/j.istruc.2019.09.004
    DOI ID:10.1016/j.istruc.2019.09.004, ISSN:2352-0124
  • Finite Element Approach to Evaluate Time Dependent Shear Behavior of Connections in Hybrid Steel-PC Girder under Sustained Loading               
    Mohammad Najmol Haque; Takeshi Maki; Jun Sasaki
    International Journal of Architectural, Civil and Construction Sciences, 巻:12.0, 号:9, 開始ページ:565, 終了ページ:574, 2019年09月, [査読有り]
    英語, 研究論文(国際会議プロシーディングス)
  • Use of cement-treated sand to enhance the lateral capacity of pile foundations
    Khawaja Adeel Tariq; Takeshi Maki
    International Journal of Physical Modelling in Geotechnics, 巻:19, 号:5, 開始ページ:221, 終了ページ:233, 2019年09月, [査読有り]
    Cement-treated sand is a material used for increasing the axial and lateral capacity of the ground around piles. Piles are commonly used to carry the axial load; however, in some structures, the lateral capacity of the pile is also important. This study investigates improving the lateral capacity of a single pile using cement-treated sand. Cement-treated sand was cast using high-early-strength cement, sand and limestone powder. Displacement-controlled lateral cyclic-load tests were performed on piles embedded in sand compacted to 70% of its relative density, and on piles embedded in cement-treated sand. The volume of cement-treated sand was varied to determine its effect on the lateral capacity of the pile. The flexural stiffness of the pile also affected its lateral capacity. The lateral capacity of the pile embedded in the cement-treated sand was five times greater than that of the piles surrounded by sand. The area and depth of improved ground around the pile strongly affected the increase in the lateral capacity of the pile. The results have indicated that the use of cement-treated sand can improve the lateral capacity of the pile and volume of the improved ground should be carefully designed, keeping in mind the ground conditions.
    Thomas Telford Ltd., 英語, 研究論文(学術雑誌)
    DOI:https://doi.org/10.1680/jphmg.17.00020
    DOI ID:10.1680/jphmg.17.00020, ISSN:1346-213X, eISSN:2042-6550
  • Development of effective precast concrete barrier wall thickness for existing bridge               
    Basit, S.; Maki, T.; Mutsuyoshi, H.; Ishihara, Y.; Tajima, H.
    Journal of Structural Engineering, JSCE, 巻:65A, 開始ページ:579, 終了ページ:588, 2019年03月, [査読有り]
    英語
  • Seismic Response of RC Bridge Piers Considering Soil-Pile Interaction
    Maki, T.; Mutsuyoshi, H.; Chotesuwan, A.
    SP-313 Proceedings of the First ACI & JCI Joint Seminar: Design of Concrete Structures Against Earthquake and Tsunami Damage, 開始ページ:9.1, 終了ページ:9.12, 2017年03月, [査読有り], [招待有り], [筆頭著者]
    American Concrete Institute, 英語, 研究論文(国際会議プロシーディングス)
    DOI:https://doi.org/10.14359/51689691
    DOI ID:10.14359/51689691
  • Effect of creep induction at an early age on subsequent prestress loss and structural response of prestressed concrete beam               
    Shingo Asamoto; Kyosuke Kato; Takeshi Maki
    Construction and Building Materials, 巻:70, 開始ページ:158, 終了ページ:164, 2014年11月, [査読有り]
    Elsevier BV, 英語, 研究論文(学術雑誌)
    DOI:https://doi.org/10.1016/j.conbuildmat.2014.07.028
    DOI ID:10.1016/j.conbuildmat.2014.07.028, ISSN:0950-0618
  • Mechanical behaviour of cement-treated sand               
    K.A. Tariq; T. Maki
    Construction and Building Materials, 巻:58, 開始ページ:54, 終了ページ:63, 2014年05月, [査読有り]
    Elsevier BV, 英語, 研究論文(学術雑誌)
    DOI:https://doi.org/10.1016/j.conbuildmat.2014.02.017
    DOI ID:10.1016/j.conbuildmat.2014.02.017, ISSN:0950-0618
  • Numerical modelling and full-scale testing of concrete piles under lateral loading               
    Rabin Tuladhar; H. Mutsuyoshi; T. Maki
    Australian Journal of Structural Engineering, 巻:14, 号:3, 開始ページ:229, 終了ページ:242, 2013年, [査読有り]
    Full-scale lateral loading tests were carried out on hollow-pre-cast-pre-stressed concrete piles embedded into the ground. The results from the tests were used as the basis for the analysis where soil was modelled as 20-node solid elements
    and for the modelling of piles comparison was done between 3-node beam elements and 20-node solid elements. It showed that the 3-node beam element modelling for pile largely underestimates its lateral capacity. The 20-node solid element modelling can, however, accurately simulate the experimental results when interface element between pile and soil, and the degradation of shear stiffness of soil in cyclic loading is considered. © Institution of Engineers Australia, 2013.
    Engineers Media, 英語, 研究論文(学術雑誌)
    DOI:https://doi.org/10.7158/S12-022.2013.14.3
    DOI ID:10.7158/S12-022.2013.14.3, ISSN:1328-7982, SCOPUS ID:84886285238
  • Seismic behavior of bridges with pier and foundation strengthening: PsD tests and analytical study               
    Anawat Chotesuwan; Hiroshi Mutsuyoshi; Takeshi Maki
    EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS, 巻:41, 号:2, 開始ページ:279, 終了ページ:294, 2012年02月, [査読有り]
    By means of a simplified three degrees of freedom model, seismic behavior of reinforced concrete bridge piers and foundations were evaluated based on pseudo-dynamic (PsD) tests for cases where pier strengthening and foundation strengthening are implemented. In addition, analysis based on PsD test results was conducted to investigate the influence of pier strengthening on seismic damage to the foundation. The PsD tests and the analysis show that the foundation suffers increased hysteretic response when pier strengthening is applied. The results also show that the foundation strengthening can prevent foundation damage. Copyright (c) 2011 John Wiley & Sons, Ltd.
    WILEY-BLACKWELL, 英語, 研究論文(学術雑誌)
    DOI:https://doi.org/10.1002/eqe.1129
    DOI ID:10.1002/eqe.1129, ISSN:0098-8847, Web of Science ID:WOS:000299070700007
  • Seismic performance of bond controlled RC columns               
    G. R. Pandey; H. Mutsuyoshi; T. Maki
    ENGINEERING STRUCTURES, 巻:30, 号:9, 開始ページ:2538, 終了ページ:2547, 2008年09月, [査読有り], [国際誌]
    An experimental investigation was carried out to examine the enhancement of seismic performances of reinforced concrete (RC) columns such as shear strength and ductility by controlling the bond of longitudinal reinforcements. Four 300 x 300 mm square RC columns with ordinary bonded reinforcements and completely unbonded reinforcements were tested under reversed cyclic loading. The test results showed that this method is very effective in completely altering the failure mode at the ultimate state from an undesirable shear to a ductile flexural one. The hysteretic load-displacement behavior of the columns with unbonded reinforcements, however, greatly differs from those of the ordinary ones. A restoring force model capable of capturing the hysteretic behavior of the unbonded columns was therefore proposed. The proposed model was then experimentally verified by conducting pseudo-dynamic tests. The restoring force model was finally applied to conduct seismic response analysis by using input earthquake waves from Hyogoken Nanbu earthquake and El Centro earthquake. (C) 2008 Elsevier Ltd. All rights reserved.
    ELSEVIER SCI LTD, 英語, 研究論文(学術雑誌)
    DOI:https://doi.org/10.1016/j.engstruct.2008.02.001
    DOI ID:10.1016/j.engstruct.2008.02.001, ISSN:0141-0296, CiNii Articles ID:80019789585, Web of Science ID:WOS:000259631200025
  • Cyclic behavior of laterally loaded concrete piles embedded into cohesive soil               
    Rabin Tuladhar; Takeshi Maki; Hiroshi Mutsuyoshi
    EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS, 巻:37, 号:1, 開始ページ:43, 終了ページ:59, 2008年01月, [査読有り]
    Modern seismic design codes stipulate that the response analysis should be conducted by considering the complete structural system including superstructure, foundation, and ground. However, for the development of seismic response analysis method for a complete structural system, it is first imperative to clarify the behavior of the soil and piles during earthquakes. In this study, full-scale monotonic and reversed cyclic lateral loading tests were carried out on concrete piles embedded into the ground. The test piles were hollow, precast, prestressed concrete piles with an outer diameter of 300 mm and a thickness of 60 mm. The test piles were 26 m long. Three-dimensional (3D) finite element analysis was then performed to study the behavior of the experimental specimens analytically. The study revealed that the lateral load-carrying capacity of the piles degrades when subjected to cyclic loading compared with monotonic loading. The effect of the use of an interface element between the soil and pile surface in the analysis was also investigated. With proper consideration of the constitutive models of soil and pile, an interface element between the pile surface and the soil, and the degradation of soil stiffness under cyclic loading, a 3D analysis was found to simulate well the actual behavior of pile and soil. Copyright (c) 2007 John Wiley & Sons, Ltd.
    JOHN WILEY & SONS LTD, 英語, 研究論文(学術雑誌)
    DOI:https://doi.org/10.1002/eqe.744
    DOI ID:10.1002/eqe.744, ISSN:0098-8847, CiNii Articles ID:120001370822, Web of Science ID:WOS:000252939000003
  • RC pile-soil interaction analysis using a 3D-finite element method with fibre theory-based beam elements               
    Takeshi Maki; Koichi Maekawa; Hiroshi Mutsuyoshi
    EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS, 巻:35, 号:13, 開始ページ:1587, 終了ページ:1607, 2006年11月, [査読有り], [筆頭著者]
    To evaluate the overall response of a structural system including its foundation and surrounding soil, an equivalent finite element model with reduced degrees of freedom using fibre theory-based beam element was proposed. The proposed model was based on investigations of the subgrade soil reaction of a single-layer model, and was verified for the cyclic behaviour of a laterally loaded single RC pile in terms of the load-displacement relationship, pile deformation, and soil pressures on the pile surface. Also investigated was the effect of the interfacial element between pile and soil on the behaviour of the laterally loaded pile. Copyright (C) 2006 John Wiley & Sons, Ltd.
    JOHN WILEY & SONS LTD, 英語, 研究論文(学術雑誌)
    DOI:https://doi.org/10.1002/eqe.588
    DOI ID:10.1002/eqe.588, ISSN:0098-8847, CiNii Articles ID:120001370379, Web of Science ID:WOS:000241918000001
  • Seismic behavior of reinforced concrete piles under ground               
    Takeshi Maki; Hiroshi Mutsuyoshi
    Journal of Advanced Concrete Technology, 巻:2, 号:1, 開始ページ:37, 終了ページ:47, 2004年04月, [査読有り], [筆頭著者]
    This paper reports the results of experimental and analytical investigation on the response behavior of reinforced concrete piles under ground. From the experimental results, it was clarified that the axial load at pile head affects the restoring force degradation and the maximum damage point is dependent on the relative stiffness between the pile and surrounding soil. From the analytical study using 3-dimensional FEM analysis, the experimental behavior could be adequately simulated by the applied method. Further investigations on the shapes or areas of hysterisis loops will be needed for the future application of this method to seismic performance evaluation of the entire structure-pile foundation-soil system.
    Japan Concrete Institute, 英語, 研究論文(学術雑誌)
    DOI:https://doi.org/10.3151/jact.2.37
    DOI ID:10.3151/jact.2.37, ISSN:1346-8014, CiNii Articles ID:130000080173, SCOPUS ID:12344281997
■ MISC
  • マルチスケール解析を用いたPC桁に生じる軸方向ひび割れの再現と耐荷性状の評価
    土屋智史; 渡邊忠朋; 斉藤成彦; 牧 剛史; 石田哲也
    土木学会論文集E2(材料・コンクリート構造), 巻:78, 号:1, 開始ページ:13, 終了ページ:29, 2022年, [査読有り]
    日本語
    DOI:https://doi.org/10.2208/jscejmcs.78.1_13
    DOI ID:10.2208/jscejmcs.78.1_13, eISSN:2185-6567
  • コンクリートの損傷指標を用いたRC部材の三次元耐荷機構の数値解析的評価
    牧 剛史; 土屋智史; 斉藤成彦; 渡邊忠朋
    土木学会論文集E2(材料・コンクリート構造), 巻:78, 号:1, 開始ページ:121, 終了ページ:137, 2022年, [査読有り], [筆頭著者]
    日本語
    DOI:https://doi.org/10.2208/jscejmcs.78.1_121
    DOI ID:10.2208/jscejmcs.78.1_121, eISSN:2185-6567
  • 覆工コンクリートひびわれ対策への部分パイプクーリングの適用
    白岩誠史; 川中政美; 庄野 昭; 佐藤 正; 牧 剛史
    土木学会論文集F1(トンネル工学), 巻:72, 号:3, 開始ページ:I_36, 終了ページ:I_46, 2016年, [査読有り]
    日本語
    DOI:https://doi.org/10.2208/jscejte.72.i_36
    DOI ID:10.2208/jscejte.72.i_36, eISSN:2185-6575
  • 非線形解析に基づく各種合成部材及び接合部の損傷評価
    米津 薫; 藤山知加子; 土屋智史; 牧 剛史; 斉藤成彦; 渡辺忠朋
    土木学会論文集A1(構造・地震工学), 巻:72, 号:5, 開始ページ:II_124, 終了ページ:II_134, 2016年, [査読有り]
    日本語
    DOI:https://doi.org/10.2208/jscejseee.72.ii_124
    DOI ID:10.2208/jscejseee.72.ii_124, eISSN:2185-4653
  • 水中におけるRC柱の動的応答性状に関する研究               
    牧 剛史; 早坂 雅俊; 中村 慎
    構造工学論文集 A, 巻:62, 開始ページ:885, 終了ページ:895, 2016年, [査読有り]
    The objective of this paper is to clarify dynamic response behavior of RC columns under water. The dynamic reversed cyclic loading test of RC column specimens has been conducted. The specimen in water subjected to lateral loads with dispalcement rate of 500mm/sec exhibited lower ductility than the specimen in air. This might be due to the internal water pressure in carcks together with the loss of friction and interlocking. Dynamic water pressure induced by crack opening-closing was also examined by conducting dynamic loading test as well as numerical calculation using SPH method.
    公益社団法人 土木学会, 日本語
    DOI:https://doi.org/10.11532/structcivil.62A.885
    DOI ID:10.11532/structcivil.62A.885, ISSN:1881-6614, CiNii Articles ID:130005608060, CiNii Books ID:AA12210243
  • 構成材料の損傷に基づくRC柱の耐荷・変形機構の数値解析的評価
    牧 剛史; 土屋智史; 斉藤成彦; 渡邊忠朋
    土木学会論文集E2(材料・コンクリート構造), 巻:71, 号:1, 開始ページ:29, 終了ページ:47, 2015年, [査読有り], [筆頭著者]
    日本語
    DOI:https://doi.org/10.2208/jscejmcs.71.29
    DOI ID:10.2208/jscejmcs.71.29, eISSN:2185-6567
  • 地震被害を受けたRC構造物の2次元動的有限要素解析への材料損傷指標の適用
    土屋智史; 牧 剛史; 斉藤成彦; 坂口淳一; 渡邊忠朋
    土木学会論文集E2(材料・コンクリート構造), 巻:70, 号:2, 開始ページ:226, 終了ページ:231, 2014年, [査読有り]
    日本語
    DOI:https://doi.org/10.2208/jscejmcs.70.226
    DOI ID:10.2208/jscejmcs.70.226, eISSN:2185-6567
  • 少数主桁形式の鋼合成桁とPC桁のずれ止め方式による接合構造の研究               
    篠崎 裕生; 浅井 洋; 紙永 祐紀; 牧 剛史; 睦好 宏史
    構造工学論文集 A, 巻:60, 開始ページ:861, 終了ページ:871, 2014年, [査読有り]
    Authors devised the joint of composite steel girder and PC girder using shear connecting method. In this paper, simplified design methods of shear connector located in the joint are proposed and verified through loading test of the 1/2 scaled model together with three-dimensional nonlinear finite element analyses. Further, it is proved that new shear connecting method using mortal filled steel tube inserted in perforated steel plate are available for shear connector at web steel plate of joint.
    公益社団法人 土木学会, 日本語
    DOI:https://doi.org/10.11532/structcivil.60A.861
    DOI ID:10.11532/structcivil.60A.861, ISSN:1881-6614, CiNii Articles ID:130005438932
  • 鋼板孔を利用した円柱部材によるずれ止めの実験的研究
    篠崎裕生; 浅井 洋; 牧 剛史; 睦好宏史
    土木学会論文集A1(構造・地震工学), 巻:69, 号:3, 開始ページ:543, 終了ページ:556, 2013年, [査読有り]
    日本語
    DOI:https://doi.org/10.2208/jscejseee.69.543
    DOI ID:10.2208/jscejseee.69.543, eISSN:2185-4653
  • せん断補強鉄筋を多量に配置したRC梁部材のせん断破壊耐力に関する検討
    坂口淳一; 土屋智史; 渡邊忠朋; 斉藤成彦; 牧 剛史
    土木学会論文集E2(材料・コンクリート構造), 巻:69, 号:2, 開始ページ:192, 終了ページ:206, 2013年, [査読有り]
    日本語
    DOI:https://doi.org/10.2208/jscejmcs.69.192
    DOI ID:10.2208/jscejmcs.69.192, eISSN:2185-6567
  • 正負交番載荷を受けるRC骨組み構造物の非線形有限要素解析による損傷評価
    牧 剛史; 斉藤成彦; 土屋智史; 渡邊忠朋; 島 弘
    土木学会論文集E2(材料・コンクリート構造), 巻:69, 号:1, 開始ページ:33, 終了ページ:52, 2013年, [査読有り], [筆頭著者]
    日本語
    DOI:https://doi.org/10.2208/jscejmcs.69.33
    DOI ID:10.2208/jscejmcs.69.33, eISSN:2185-6567
  • 非線形有限要素解析によるRC面部材の損傷指標と耐力評価
    土屋智史; 牧 剛史; 斉藤成彦; 渡邊忠朋; 前川宏一
    土木学会論文集E2(材料・コンクリート構造), 巻:68, 号:3, 開始ページ:209, 終了ページ:224, 2012年, [査読有り]
    日本語
    DOI:https://doi.org/10.2208/jscejmcs.68.209
    DOI ID:10.2208/jscejmcs.68.209, eISSN:2185-6567
  • 改良型収縮拘束試験による収縮ひび割れ抵抗性に及ぼす養生温度および混和材置換の影響評価
    浅本晋吾; 加藤優典; 牧 剛史; 蔵重 勲
    セメント・コンクリート論文集, 巻:66, 号:1, 開始ページ:95, 終了ページ:102, 2012年, [査読有り]
    日本語
    DOI:https://doi.org/10.14250/cement.66.95
    DOI ID:10.14250/cement.66.95, ISSN:0916-3182, eISSN:2187-3313
  • 大規模有限要素法解析のためのコンクリートの非線形構成則の再定式化
    山下拓三; 堀 宗朗; 小国健二; 岡澤重信; 牧 剛史; 高橋良和
    土木学会論文集A2(応用力学), 巻:67, 号:1, 開始ページ:145, 終了ページ:154, 2011年, [査読有り]
    日本語
    DOI:https://doi.org/10.2208/jscejam.67.145
    DOI ID:10.2208/jscejam.67.145, eISSN:2185-4661
  • 非線形有限要素解析によるRCはり部材の損傷評価
    斉藤 成彦; 牧 剛史; 土屋 智史; 渡邊 忠朋
    土木学会論文集E2(材料・コンクリート構造), 巻:67, 号:2, 開始ページ:166, 終了ページ:180, 2011年, [査読有り]
    日本語
    DOI:https://doi.org/10.2208/jscejmcs.67.166
    DOI ID:10.2208/jscejmcs.67.166, eISSN:2185-6567
  • 耐震補強された高速道路橋梁の耐震安全性に関する研究               
    牧 剛史; 睦好 宏史; Chotesuwan, A.
    高速道路と自動車, 巻:53, 号:9, 開始ページ:18, 終了ページ:24, 2010年, [査読有り], [筆頭著者]
    日本語
  • 鋼-コンクリート複合PCランガー橋接合部の引抜き抵抗に関する数値解析的検討
    牧 剛史; 川村 力; 上田多門; 土屋智史; 渡辺忠朋
    土木学会論文集A, 巻:66, 号:3, 開始ページ:491, 終了ページ:504, 2010年, [査読有り], [筆頭著者]
    日本語
    DOI:https://doi.org/10.2208/jsceja.66.491
    DOI ID:10.2208/jsceja.66.491, eISSN:1880-6023
  • 3次元非線形有限要素法を用いたRC杭基礎-地盤系の連成地震応答解析               
    牧 剛史; 土屋 智史; 渡辺 忠朋; 前川 宏一
    土木学会論文集A, 巻:64, 号:2, 開始ページ:192, 終了ページ:207, 2008年, [査読有り], [筆頭著者]
  • 実地盤中に設置された実大コンクリート杭の杭頭水平復元力特性と変形性状               
    牧 剛史; 睦好 宏史; Rabin TULADHAR; 醍醐 宏治
    土木学会論文集E, 巻:63, 号:3, 開始ページ:396, 終了ページ:409, 2007年, [査読有り], [筆頭著者]
  • 鉄筋の付着を制御することによるRC柱部材の耐震性状改善に関する研究               
    睦好 宏史; 牧 剛史; Pandey, G. R.; 杉田 清隆
    土木学会論文集, 巻:802, 号:V-69, 開始ページ:155, 終了ページ:169, 2005年11月, [査読有り]
  • RCラーメン橋脚におけるはり部耐震補強に関する研究               
    睦好 宏史; 牧 剛史; 山田 伝一郎; 小西 由人; 藤田 亮一
    土木学会論文集, 巻:746, 号:V-61, 開始ページ:215, 終了ページ:228, 2003年11月, [査読有り]
  • RC杭体-地盤相互作用解析における線材モデルの適用性               
    牧 剛史; 睦好 宏史; 前川 宏一
    土木学会論文集, 巻:746, 号:V-61, 開始ページ:57, 終了ページ:70, 2003年11月, [査読有り], [筆頭著者]
    鉄筋コンクリート構造物全体系の応答解析手法の確立を見据え, 杭体-地盤界面における非線形局所挙動を含むRC杭の非線形応答解析に, 線材モデル (fiber model) がどの程度適用できるかを, 既往の載荷実験結果との比較から総合的に検討を行った. 杭体-地盤間の界面剥離 (No Tension) が構造応答に及ぼす影響は小さくはなく, 杭体に生じる最大損傷深さが深いほど, その影響が顕著に表れることを明らかにした. さらに, 杭-地盤系の数値応答評価への適用を念頭に置き, 本論文で用いた解析モデルに対して, 推定精度の検討を行った.
    土木学会, 日本語
    DOI:https://doi.org/10.2208/jscej.2003.746_57
    DOI ID:10.2208/jscej.2003.746_57, ISSN:0289-7806, CiNii Articles ID:10012472994, CiNii Books ID:AN10014020
  • 鉄筋コンクリート杭の水平復元力特性と変形性状に関する研究               
    牧 剛史; 睦好 宏史
    土木学会論文集, 巻:683, 号:V-52, 開始ページ:103, 終了ページ:118, 2001年08月, [査読有り], [筆頭著者]
  • プレストレスを導入した鉄筋コンクリート橋脚の耐震性状               
    睦好 宏史; W. A. Zatar; 牧 剛史
    土木学会論文集, 巻:669, 号:V-50, 開始ページ:27, 終了ページ:38, 2001年02月, [査読有り]
  • 吹付けコンクリートのリバウンド評価に対する2次元個別要素法の適用               
    牧 剛史; 魚本健人
    土木学会論文集, 巻:620, 号:V-43, 開始ページ:109, 終了ページ:118, 1999年05月, [査読有り], [筆頭著者]
    日本語
■ 講演・口頭発表等
  • Effect of local characteristics between pile and soil on seismic behavior of RC piles under ground               
    Takeshi Maki; Hiroshi Mutsuyoshi
    Proceedings of the fib Symposium 2003: Concrete Structures in Seismic Regions, 2003年, Technical Chamber of Greece
    2003年 - 2003年, 英語
■ 共同研究・競争的資金等の研究課題
  • -               
    鉄筋コンクリート杭の耐震性状(土木学会論文集Ⅴ,2001)や,地盤と基礎の非線形性を考慮した鉄筋コンクリート構造物の耐震性状(JCI年次論文報告集,1998)に関して,構造物全体系としての耐震性状・耐震設計について検討をおこなっている。また,鉄筋コンクリートの非線形構成則を組み入れたスラブの押抜きせん断性状(JCI年次論文報告集,1996),非連続体解折法(DEM)による吹付けコンクリートの解折(土木学会論文集Ⅴ,1999)など,コンクリート工学の材料から構造,静的から動的問題に関わってきた。
    競争的資金
  • -               
    競争的資金
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