Strain based damage indicators for finite element analysis of reinforced concrete structures Shigehiko Saito; Takeshi Maki; Satoshi Tsuchiya; Tadatomo Watanabe
Structures,
Volume：58,
First page：105473,
Last page：105473, Dec. 2023,
[Reviewed]Elsevier BV, English, Scientific journal
DOI：https://doi.org/10.1016/j.istruc.2023.105473DOI ID：10.1016/j.istruc.2023.105473,
ISSN：2352-0124 Flexural Behavior of Precast Concrete Slab Connections using Loop Steel Bars and MortarQuang-Thinh Nguyen; Takeshi Maki; Hiroshi Mutsuyoshi; Yosuke Ishihara
Journal of Advanced Concrete Technology,
Volume：21,
Number：6,
First page：436,
Last page：449, Jun. 2023,
[Reviewed]Japan Concrete Institute, English, Scientific journal
DOI：https://doi.org/10.3151/jact.21.436DOI 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 FrameDagvabazar Gombosuren; Takeshi Maki
Advances in Materials Science and Engineering,
Volume：2022,
First page：1,
Last page：21, Dec. 2022,
[Reviewed]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, Scientific journal
DOI：https://doi.org/10.1155/2022/6858283DOI 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 statesSania Gohar; Yasunao Matsumoto; Takeshi Maki; Satoru Sakuma
Journal of Civil Structural Health Monitoring,
Volume：13,
Number：1,
First page：133,
Last page：148, Sep. 2022,
[Reviewed]Springer Science and Business Media LLC, English, Scientific journal
DOI：https://doi.org/10.1007/s13349-022-00625-wDOI ID：10.1007/s13349-022-00625-w,
ISSN：2190-5452,
eISSN：2190-5479 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, Volume：20, Number：78, First page：148, Last page：157, Feb. 2021, [Reviewed]
English
Prediction of Joint Shear Deformation Index of RC Beam–Column JointsDagvabazar Gombosuren; Takeshi Maki
Buildings,
Volume：10,
Number：10,
First page：176,
Last page：176, Oct. 2020,
[Reviewed]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, English, Scientific journal
DOI：https://doi.org/10.3390/buildings10100176DOI 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,
Volume：27,
First page：1682,
Last page：1692, Oct. 2020,
[Reviewed]Elsevier BV, English, Scientific journal
DOI：https://doi.org/10.1016/j.istruc.2020.08.003DOI 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,
Volume：22,
First page：327,
Last page：340, Dec. 2019,
[Reviewed]Elsevier BV, English, Scientific journal
DOI：https://doi.org/10.1016/j.istruc.2019.09.004DOI 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, Volume：12.0, Number：9, First page：565, Last page：574, Sep. 2019, [Reviewed]
English, International conference proceedings
Use of cement-treated sand to enhance the lateral capacity of pile foundationsKhawaja Adeel Tariq; Takeshi Maki
International Journal of Physical Modelling in Geotechnics,
Volume：19,
Number：5,
First page：221,
Last page：233, Sep. 2019,
[Reviewed]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., English, Scientific journal
DOI：https://doi.org/10.1680/jphmg.17.00020DOI 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, Volume：65A, First page：579, Last page：588, Mar. 2019, [Reviewed]
English
Seismic Response of RC Bridge Piers Considering Soil-Pile InteractionMaki, T.; Mutsuyoshi, H.; Chotesuwan, A.
SP-313 Proceedings of the First ACI & JCI Joint Seminar: Design of Concrete Structures Against Earthquake and Tsunami Damage,
First page：9.1,
Last page：9.12, Mar. 2017,
[Reviewed],
[Invited],
[Lead]American Concrete Institute, English, International conference proceedings
DOI：https://doi.org/10.14359/51689691DOI 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,
Volume：70,
First page：158,
Last page：164, Nov. 2014,
[Reviewed]Elsevier BV, English, Scientific journal
DOI：https://doi.org/10.1016/j.conbuildmat.2014.07.028DOI 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,
Volume：58,
First page：54,
Last page：63, May 2014,
[Reviewed]Elsevier BV, English, Scientific journal
DOI：https://doi.org/10.1016/j.conbuildmat.2014.02.017DOI 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,
Volume：14,
Number：3,
First page：229,
Last page：242, 2013,
[Reviewed]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, English, Scientific journal
DOI：https://doi.org/10.7158/S12-022.2013.14.3DOI 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,
Volume：41,
Number：2,
First page：279,
Last page：294, Feb. 2012,
[Reviewed]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, English, Scientific journal
DOI：https://doi.org/10.1002/eqe.1129DOI 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,
Volume：30,
Number：9,
First page：2538,
Last page：2547, Sep. 2008,
[Reviewed],
［International magazine］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, English, Scientific journal
DOI：https://doi.org/10.1016/j.engstruct.2008.02.001DOI 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,
Volume：37,
Number：1,
First page：43,
Last page：59, Jan. 2008,
[Reviewed]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, English, Scientific journal
DOI：https://doi.org/10.1002/eqe.744DOI 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,
Volume：35,
Number：13,
First page：1587,
Last page：1607, Nov. 2006,
[Reviewed],
[Lead]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, English, Scientific journal
DOI：https://doi.org/10.1002/eqe.588DOI 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,
Volume：2,
Number：1,
First page：37,
Last page：47, Apr. 2004,
[Reviewed],
[Lead]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, English, Scientific journal
DOI：https://doi.org/10.3151/jact.2.37DOI ID：10.3151/jact.2.37,
ISSN：1346-8014,
CiNii Articles ID：130000080173,
SCOPUS ID：12344281997
NUMERICAL EVALUATION OF THREE-DIMENSIONAL LOAD CARRYING MECHANISM IN RC MEMBERS IN TERMS OF CONCRETE DAMAGE INDICESTakeshi MAKI; Satoshi TSUCHIYA; Shigehiko SAITO; Tadatomo WATANABE
Journal of Japan Society of Civil Engineers, Ser. E2 (Materials and Concrete Structures),
Volume：78,
Number：1,
First page：121,
Last page：137, 2022,
[Reviewed],
[Lead]Japan Society of Civil Engineers, Japanese
DOI：https://doi.org/10.2208/jscejmcs.78.1_121DOI ID：10.2208/jscejmcs.78.1_121,
eISSN：2185-6567 Dynamic response behavior of RC columns under water Maki Takeshi; Hayasaka Masatoshi; Nakamura Shin
Kozo Kogaku Ronbunshu. A (Journal of Structural Engineering. A),
Volume：62,
First page：885,
Last page：895, 2016,
[Reviewed]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.
Japan Society of Civil Engineers, Japanese
DOI：https://doi.org/10.11532/structcivil.62A.885DOI ID：10.11532/structcivil.62A.885,
ISSN：1881-6614,
CiNii Articles ID：130005608060,
CiNii Books ID：AA12210243 NUMERICAL EVALUATION OF LOAD-CARRYING MECHANISMS OF RC COLUMNS BASED ON DAMAGE OF CONSTITUTIVE MATERIALSTakeshi MAKI; Satoshi TSUCHIYA; Shigehiko SAITO; Tadatomo WATANABE
Journal of Japan Society of Civil Engineers, Ser. E2 (Materials and Concrete Structures),
Volume：71,
Number：1,
First page：29,
Last page：47, 2015,
[Reviewed],
[Lead]Japan Society of Civil Engineers, Japanese
DOI：https://doi.org/10.2208/jscejmcs.71.29DOI ID：10.2208/jscejmcs.71.29,
eISSN：2185-6567 A study on joint of composite steel girder and PC girder using shear connecting method Shinozaki Hiroo; Asai Hiroshi; Kaminaga Yuki; Maki Takeshi; Mutsuyoshi Hiroshi
Kozo Kogaku Ronbunshu. A (Journal of Structural Engineering. A),
Volume：60,
First page：861,
Last page：871, 2014,
[Reviewed]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.
Japan Society of Civil Engineers, Japanese
DOI：https://doi.org/10.11532/structcivil.60A.861DOI ID：10.11532/structcivil.60A.861,
ISSN：1881-6614,
CiNii Articles ID：130005438932 DAMAGE ASSESSMENT OF RC FRAME STRUCTURES SUBJECTED TO CYCLIC LOADING USING NONLINEAR FINITE ELEMENT ANALYSESTakeshi MAKI; Shigehiko SAITO; Satoshi TSUCHIYA; Tadatomo WATANABE; Hiroshi SHIMA
Journal of Japan Society of Civil Engineers, Ser. E2 (Materials and Concrete Structures),
Volume：69,
Number：1,
First page：33,
Last page：52, 2013,
[Reviewed],
[Lead]Japan Society of Civil Engineers, Japanese
DOI：https://doi.org/10.2208/jscejmcs.69.33DOI ID：10.2208/jscejmcs.69.33,
eISSN：2185-6567 Seismic safety of strengthened highway bridges
Maki, T.; Mutsuyoshi, H.; Chotesuwan, A.
Expressways and Automobiles, Volume：53, Number：9, First page：18, Last page：24, 2010, [Reviewed], [Lead]
Japanese
Seismic response analysis of RC pile foundation-soil coupled system using 3D nonlinear finite element method
Maki, T.; Tsuchiya, S.; Watanabe, T.; Maekawa, K.
Journal of Japan Society of Civil Engineers A, Volume：64, Number：2, First page：192, Last page：207, 2008, [Reviewed], [Lead]
Restoring force and deformation of large-scale concrete pile embedded into cohesive soil
Maki, T.; Mutsuyoshi, H.; Tuladhar, R.; Daigo, K.
Journal of Japan Society of Civil Engineers E, Volume：63, Number：3, First page：396, Last page：409, 2007, [Reviewed], [Lead]
Enhancement of seismic behavior of reinforced concrete columns by controlling bond between concrete and reinforcement
Mutsuyoshi, H.; Maki, T.; Pandey, G. R.; Sugita, K.
Journal of Japan Society of Civil Engineers, Volume：802, Number：V-69, First page：155, Last page：169, Nov. 2005, [Reviewed]
Seismic strengthening of a beam in RC rigid frame structures
Mutsuyoshi, H.; Maki, T.; Yamada, D.; Konishi, Y.; Fujita, R.
Journal of Japan Society of Civil Engineers, Volume：746, Number：V-61, First page：215, Last page：228, Nov. 2003, [Reviewed]
Applicability of fiber model to RC pile-soil interaction analysis MAKI Takeshi; MUTSUYOSHI Hiroshi; MAEKAWA Koichi
Journal of Japan Society of Civil Engineers,
Volume：746,
Number：V-61,
First page：57,
Last page：70, Nov. 2003,
[Reviewed],
[Lead]In order to clarify the applicability of fiber model to pile-soil interaction analysis. numerical evaluations of the past loading test results are synthetically performed using 3D FEM analytical method including the local behaviors between pile and soil. It can be concluded that the local separation between pile and soil (e.g. no tensile stress exists) is effective on the response behavior of RC piles, especially in the cases that the maximum damage occurs at deep position of the pile. In addition, the accuracy of the adopted model is verified for applying to the response evaluation of pile-soil system.
Japan Society of Civil Engineers, Japanese
DOI：https://doi.org/10.2208/jscej.2003.746_57DOI ID：10.2208/jscej.2003.746_57,
ISSN：0289-7806,
CiNii Articles ID：10012472994,
CiNii Books ID：AN10014020 Restoring force and deformation of reinforced concrete piles
Maki, T.; Mutsuyoshi, H.
Journal of Japan Society of Civil Engineers, Volume：683, Number：V-52, First page：103, Last page：118, Aug. 2001, [Reviewed], [Lead]
Seismic behavior of partially prestressed concrete piers
Mutsuyoshi, H.; Zatar, W. A.; Maki, T.
Journal of Japan Society of Civil Engineers, Volume：669, Number：V-50, First page：27, Last page：38, Feb. 2001, [Reviewed]
Application of 2-D distinct element method for evaluating rebound of shotcrete
Maki, T.; Uomoto, T.
Journal of Japan Society of Civil Engineers, Volume：620, Number：V-43, First page：109, Last page：118, May 1999, [Reviewed], [Lead]
Japanese
