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1

DI, MARCO CATERINA. "Seismic behavior of RC beam-column joints reinforced with deformed or smooth bars." Doctoral thesis, Università degli Studi di Trieste, 2022. http://hdl.handle.net/11368/3032059.

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Modern seismic design of reinforced concrete (RC) buildings is based on the capacity design principles, which provide for the dissipation of seismic energy through the development of ductile mechanism in the structural elements. Beam-column joints are critical elements, since they are governed by shear and bond behavior, with low ductility and scarce energy dissipation. In the absence of modern seismic codes prescriptions, many existing RC buildings designed before mid-1970 present structural deficiencies, like no joint shear reinforcement and the use of plain bars. These deficiencies may lead
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2

Kam, Weng Yuen. "Selective Weakening and Post-Tensioning for the Seismic Retrofit of Non-Ductile RC Frames." Thesis, University of Canterbury. Department of Civil and Natural Resources Engineering, 2010. http://hdl.handle.net/10092/5237.

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This research introduces and develops a counter-intuitive seismic retrofit strategy, referred to as “Selective Weakening” (SW), for pre-1970s reinforced concrete (RC) frames with a particular emphasis on the upgrading of exterior beam-column joints. By focusing on increasing the displacement and ductility capacities of the beam-column joints, simple retrofit interventions such as selective weakening of the beam and external post-tensioning of the joint can change the local inelastic mechanism and result in improved global lateral and energy dissipation capacities. The thesis first presents an
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3

Jemaa, Yaser. "Seismic behaviour of deficient exterior RC beam-column joints." Thesis, University of Sheffield, 2013. http://etheses.whiterose.ac.uk/15025/.

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Post-earthquake reconnaissance and results of previously conducted experiments show that stiffness and strength deterioration of beam-column joints can have a detrimental effect on the integrity and vulnerability of reinforced concrete frame structures, especially in older buildings in developing countries. As a result, there is a need to develop efficient structural evaluation techniques that are capable of accurately estimating the strength and deformability of existing buildings to facilitate the development of safer, simpler, and lower cost retrofit solutions and thus contributing to risk
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4

Hasnaoui, Fadhila. "Modélisations simplifiées pour l’analyse du risque sismique de bâtiments en béton armé." Thesis, Paris 10, 2014. http://www.theses.fr/2014PA100082.

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Modélisations simplifiées pour l’analyse du risque sismique de bâtiments en béton armé. Résumé de la thèse en français (1800 signes max.) : La thèse s’inscrit dans le cadre du projet MARS (Méthodes Avancées pour le Risque Sismique, EDF R&D). Elle concerne plus particulièrement certaines tâches sur le développement des méthodes simplifiées et robustes de calcul pour permettre la simulation intensive et table de la réponse sismique de bâtiments en béton armé. En effet, |’analyse de risque nécessite un très grand nombre de calculs pour tenir compte des incertitudes, tant sur le chargement (al
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5

Bowers, Jeremy Thomas. "Nonlinear Cyclic Truss Model for Beam-Column Joints of Non-ductile RC Frames." Thesis, Virginia Tech, 2014. http://hdl.handle.net/10919/50437.

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Reinforced concrete (RC) moment frames comprise a significant portion of the built environment in areas with seismic hazards. The beam-to-column joints of these frames are key components that have a significant impact on the structure's behavior. Modern detailing provides sufficient strength within these joints to transfer the forces between the beams and the columns during a seismic event, but existing structures built with poor detailing are still quite prevalent. Identifying the need and extent of retrofits to ensure public safety through nondestructive means is of primary importance. Exist
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6

Lima, Carmine. "Capacity models for beam-to-column joints in RC frames under seismic actions." Doctoral thesis, Universita degli studi di Salerno, 2011. http://hdl.handle.net/10556/155.

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2009 - 2010<br>Le strutture in cemento armato realizzate intorno aglia anni '60 e '70 rappresentano, ad oggi, la maggior parte del patrimonio edilizio esistente in Italia. Inoltre, esse sono spesso strutture strategiche ai fini della gestione delle emergenze in quanto ospitano scuole ed ospedali. Tali edifici, nonostante l'importanza strategica, risultano nella maggioranza dei casi vulnerabili rispetto agli eventi sismici a causa dell'insufficente capacità in termini di resistenza e duttilità, generalmente dovuti all'eccessivo passo delle staffe dei pilastri e all'assenza di rinforzo trsversal
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7

Akguzel, Umut. "Seismic Performance of FRP Retrofitted Exterior RC Beam-Column Joints under Varying Axial and Bidirectional Loading." Thesis, University of Canterbury. Civil and Natural Resources Engineering, 2011. http://hdl.handle.net/10092/5993.

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Most of the experimental studies available in literature on the seismic assessment and retrofit of existing, poorly detailed, reinforced concrete (RC) beam-column joints typical of pre-1970s construction practice have concentrated on the two-dimensional (2D) response, using unidirectional cyclic loading testing protocols and a constant column axial load. Even more limited information is available on the performance of corner three-dimensional (3D) RC beam-column joints with substandard detailing subjected to a bidirectional-loading regime. In addition, little effort has been dedicated to the d
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8

NITIFFI, Riccardo. "A proposal for the numerical modeling of monotonic and cyclic behavior of exterior RC beam-column joints." Doctoral thesis, Università degli studi di Cassino, 2021. http://hdl.handle.net/11580/83993.

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The vulnerability of exterior beam-column joints in existing RC buildings represents a key aspect to ensure structural integrity of buildings under seismic loadings. Recent seismic aftermaths showed substantial damages resulting from beam-column joints in older-type non-seismically designed frame structures, often leading to undesirable brittle failure mechanisms. RC buildings constructed prior to developing current seismic codes and guidelines generally lack joint transverse reinforcements. As a result, the seismic assessment of existing RC buildings necessarily requires to consider beam-col
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9

Genesio, Giovacchino [Verfasser], and Rolf [Akademischer Betreuer] Eligehausen. "Seismic assessment of RC exterior beam-column joints and retrofit with haunches using post-installed anchors / Giovacchino Genesio. Betreuer: Rolf Eligehausen." Stuttgart : Universitätsbibliothek der Universität Stuttgart, 2012. http://d-nb.info/1028801211/34.

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10

Sharma, Akanshu [Verfasser], and Rolf [Akademischer Betreuer] Eligehausen. "Seismic behavior and retrofitting of RC frame structures with emphasis on beam-column joints : experiments and numerical modeling / Akanshu Sharma. Betreuer: Rolf Eligehausen." Stuttgart : Universitätsbibliothek der Universität Stuttgart, 2013. http://d-nb.info/1042659567/34.

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11

GAZZANI, VALENTINA. "Influence of FE Modelling on Typical and Specific Vulnerabilities of RC School Buildings." Doctoral thesis, Università Politecnica delle Marche, 2019. http://hdl.handle.net/11566/263653.

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La valutazione della vulnerabilità degli edifici scolastici esistenti nei confronti dei terremoti è un’esigenza di primaria importanza per la società in Italia. Poiché, generalmente, strutture dello stesso tipo e medesimo periodo di costruzione presentano caratteristiche simili, è stato possibile evidenziare le vulnerabilità tipiche e specifiche per differenti layout architettonici individuabili in scuole dell’infanzia, primarie e secondarie di I grado. Inizialmente, per una stima rapida delle prestazioni degli edifici, è stata valutata la vulnerabilità sismica di ciascun edificio scolastico
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12

Khalili, Ghomi Shervin. "Seismic performance of GFRP-RC exterior beam-column joints with lateral beams." 2014. http://hdl.handle.net/1993/23304.

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In the past few years, some experimental investigations have been conducted to verify seismic behaviour of fiber reinforced polymer reinforced concrete (FRP-RC) beam-column joints. Those researches were mainly focused on exterior beam-column joints without lateral beams. However, lateral beams, commonly exist in buildings, can significantly improve seismic performance of the joints. Moreover, the way the longitudinal beam bars are anchored in the joint, either using headed-end or bent bars, was not adequately addressed. This study aims to fill these gaps and investigate the shear capacity of F
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13

Sunayana, S. "Moment capacity ratio at beam – column joint in a regular RC framed building." Thesis, 2014. http://ethesis.nitrkl.ac.in/6301/2/E-65.pdf.

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Reinforced concrete moment resisting frames (RCMRF) are structural systems that should be designed to ensure proper energy dissipation capacity when subjected to seismic loading. In this design philosophy the capacity design approach that is currently used in practice demands “strong-column / weak-beam” design to have good ductility and a preferable collapse mechanism in the structure. When only the flexural strength of longitudinal beams controls the overall response of a structure, RC beam-column connections display ductile behaviour (with the joint panel region essentially remaining elastic
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14

Pan, Chun-Yu, and 潘俊佑. "Experimental Study on RC Beam-Column Joint Strengthening with Carbon Fiber Reinforced Polymer(CFRP)." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/62281017093702273314.

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碩士<br>國立成功大學<br>土木工程學系碩博士班<br>95<br>This study investigates the strengthening of the reinforced concrete beam-column joint with carbon fiber reinforced polymer (CFRP) by a large full scale experiment. Three interior beam-column joints with non-ductile reinforcement are tested in this research. These joints are tested under the quasi-static load to simulate seismic forces. A prototype interior beam-column joint specimen without CFRP is used as the compared specimen. The parameters include the direction of CFRP, layers of CFRP, and the sequence in sticking CFRP. The experimental results demonstr
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15

Cai, Ming-Yan, and 蔡明諺. "Numerical model on RC beam-column joint strengthening with carbon fiber reinforced polymer(CFRP)." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/90199231417097403462.

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碩士<br>國立成功大學<br>土木工程學系碩博士班<br>95<br>This study investigates a numerical model on the Reinforced Concrete(RC) beam-column joint strengthened by the carbon fiber reinforced polymer (CFRP). At the beginning, a three-dimentional(3-D) nonlinear finite element analysis is used to simulate the behavior of interior and exterior beam-column joints without CFRP. There are six experiments to perform the the parametric studies including the concrete compressive strength, axial load, and the simulation of steel. Then, a 3-D nonlinear finite element analysis is used to investigate the behavior of interior b
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16

YEH, YU-FAN, and 葉欲凡. "Prediction on Story Shear-Deflection of Frame by Shear Degradation Model of RC Beam-Column Joint." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/56642111479758557981.

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碩士<br>國立中央大學<br>土木工程研究所<br>93<br>This thesis comes from an idea of seismic assessment for RC non-ductile structure. In traditional frame analysis, rigid part of beam-column joints was taken into account. However, it is not adequate for estimating the frame deformation during earthquake if ignoring the effect of beam-column joint deformation. The purpose of this study is to simulate the beam-column joint using a panel truss model via present concrete softened theories to find out the degradation curve of joint. Then the joint shear degradation curve is added to the story shear-deflection predic
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17

Huwang, Shih-Chi, and 黃士旗. "Seismic Assessment on Rehabilitation of Damaged RC Beam-Column Joints." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/88347851316387959807.

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碩士<br>國立中央大學<br>土木工程研究所<br>91<br>This experiment was mainly aimed at exploring feasibility of retrofitting damaged beam-column joint by wire concrete jacketing,and a discussion was made through the differences in stiffness, ductility, joint shear degradation between each retrofitted specimen。 From the experiment results,it was found that wire concrete jacketing scheme could improve the joint shear strength and make beam plastic hinge develop before joint shear failure。Howerver, the benefit of retrofitting does not come up to the target of the study because the split occurred in the interface
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18

Chen, Chih-hsien, and 陳智賢. "Test of Seismic Behavior of Corner Beam-Column Joints of RC." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/67541645779728577071.

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碩士<br>國立台灣工業技術學院<br>營建工程技術研究所<br>85<br>The objective of this study is focused on the behavior of thebeam-column corner joints designed by the seismic provissions of different codes, namely the NZS 1995 Code and ACI 318-95 Code. The test variables included the concrete compressive strength, the shear stress of joint, and the detailing of hoop. Six beam-column corner joints specimens were tested. Three of them are the NZS specimens and others are the ACI specimens with refined parameters. Tes
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19

Chen, PeiChing, and 陳沛清. "A Study of RC Column-to-Foundation and Steel Beam-to-RC Column Joints for An RCS Frame Specimen." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/45140523250624627974.

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碩士<br>國立臺灣大學<br>土木工程學研究所<br>90<br>A joint research effort among US, Japan and Taiwanese researchers on large scale frame testing of steel and concrete composite structures has been launched in 2001. It is the consensus that a 2-D full-scale three-story three-bay RCS moment resisting frame be constructed and tested in the NCREE to accelerate the world-wide implementation of RCS structural systems in real application. In this research, cyclic tests were conducted on the roof beam-to-RC column and the RC column to foundation subassemblage specimens. In this research, a total of six spe
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20

Lin, Yi-Jhong, and 林毅忠. "Relocating Beam Plastic Hinging Zones of Interior RC Beam-Column Joints with Headed Bars." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/77606439662582381404.

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碩士<br>國立雲林科技大學<br>營建工程系碩士班<br>95<br>This paper presents cyclic loading response of four reinforced concrete interior beam-column connections. Two units were designed according to the ACI Code. One benchmark unit had a concentric beam framing into an identical rectangular column and another benchmark unit had eccentric beam framing into the column. Another two units had second layer of T-headed bars for moving the plastic hinge. The test result shows that two benchmark units had flexural yielding at beam-column face and the strength degradation initiated at 3% drift due to bond failure of the b
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21

Chang, You-Ren, and 張又仁. "Seismic Testing of Shear Strength of New RC Interior Beam-Column Joints." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/89515840892757414284.

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碩士<br>國立雲林科技大學<br>營建工程系碩士班<br>102<br>Using high-strength reinforcement and concrete have many advantages, including smaller member sizes, lighter structure elements, lesser reinforcement, longer span capability, and more space available for end users. This project investigate how to extending current design methods for frame joints with high-strength reinforced concrete. This project constructed a test database with over 350 reinforced concrete beam-column connections through extensive investigations. Four interior beam-column joint specimens were constructed and tested by cyclic loading to ev
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22

Chang, Chia-Jung, and 張家榮. "Seismic Testing of Shear Strength of New RC Exterior Beam-Column Joints." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/63474848722509062606.

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碩士<br>國立雲林科技大學<br>營建工程系碩士班<br>102<br>New RC structures have many advantages, including smaller member sizes, lighter structure elements, lesser reinforcement, longer span capability, and more space available for end users. This study investigate how to extending current design methods for New RC frame joints. A test database was constructed with over 350 reinforced concrete beam-column connections through extensive investigations. Based on the database investigation, this study designed five T-shaped beam-column joint specimens made with high-strength reinforcement and concrete to evaluate cur
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23

Kang, Jyun-Yao, and 康俊堯. "Improving Bond Preformance of Interior RC Beam-Column Joints with Mechanical Anchorage." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/07808236507267590931.

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碩士<br>國立雲林科技大學<br>營建工程系碩士班<br>95<br>The main purpose of thesis is to study the six full-scale reinforced concrete interior beam-column connections with a concentric or eccentric beam framing into a rectangular column in strong or weak direction is reported. Each cross-shaped subassembly had a concentric or eccentric beam framing into an identical rectangular column in strong or weak direction. Member proportions, design and details were compatible with the modern seismic design provisions for the special moment-resisting frames to ensure anticipated beam plastic mechanisms. The specimen variab
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24

Kim, Young Hye. "Code provisions and practical design examples of hooked bar anchorage." Thesis, 2009. http://hdl.handle.net/2152/ETD-UT-2009-08-385.

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In structural concrete, hooked bars are used to shorten anchorage length when the requirements for straight bar anchorage cannot be provided within the available dimensions of elements. The objective of this study was to provide an overview of hooked bar anchorage. Design examples and structural details are based on Building code requirements for structural concrete (ACI 318-08) and commentary. Examples of standard hooks in exterior beam-column joint and hooked bar anchorage details for reinforced concrete beam-SRC column joints are discussed. The general behavior of anchorage of hooked reinfo
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25

Chao, Wei-Fan, and 趙偉帆. "Seismic Behavior of Headed-Bars in High-Strength RC Exterior Beam-Column Joints with P-Delta Effect." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/54841222274884637001.

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碩士<br>國立臺灣科技大學<br>營建工程系<br>104<br>In the moment resisting frames, impacts of gravity effect and dumping moment of earthquakes on the entire building cause the axial force that exterior beam-column joints bear to vary depending on the direction and size of the dumping moment. As a result, the axial force variation of columns and impacts of horizontal displacement δ on shears should be taken into consideration, while evaluating the seismic capacity and deformation behavior of beam-column joints. In traditional RC exterior beam-column joints, beams are typically anchored in columns at a 90º angle
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