Resource Type

Journal Article 15

Year

2023 1

2021 3

2020 4

2018 1

2017 1

2016 1

2011 1

2010 1

2009 1

open ︾

Keywords

CFRP sheets 1

Connections 1

Fatigue 1

High strength steel 1

Resin-injected bolts 1

S-N curves 1

Structural adhesives 1

Structural reinforcements 1

base plate 1

beam to column connections 1

beam-column connections 1

beam-to-column connection 1

bearing behavior 1

bolted connection 1

buckling-restrained knee brace 1

calculation method 1

combinational modeling 1

component method 1

composite connections 1

open ︾

Search scope:

排序： Display mode:

Calculation method of load distribution on pipe threaded connections under tension load

Shoujun CHEN, Lianxin GAO, Qi AN

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 2,   Pages 241-248 doi: 10.1007/s11465-011-0219-x

Abstract: This paper presents a new calculation method that can calculate the load distribution on pipe threaded connections

Keywords： load distribution     calculation method     pipe threaded connections     tension load    

HTML PDF Collect

Damage identification in connections of moment frames using time domain responses and an optimization

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4,   Pages 851-866 doi: 10.1007/s11709-021-0739-3

Abstract: Damage is defined as changes to the material and/or geometric properties of a structural system, comprising changes to the boundary conditions and system connectivity, adversely affecting the system’s performance. Inspecting the elements of structures, particularly critical components, is vital to evaluate the structural lifespan and safety. In this study, an optimization-based method for joint damage identification of moment frames using the time-domain responses is introduced. The beam-to-column connection in a metallic moment frame structure is modeled by a zero-length rotational spring at both ends of the beam element. For each connection, an end-fixity factor is specified, which changes between 0 and 1. Then, the problem of joint damage identification is converted to a standard optimization problem. An objective function is defined using the nodal point accelerations extracted from the damaged structure and an analytical model of the structure in which the nodal accelerations are obtained using the Newmark procedure. The optimization problem is solved by an improved differential evolution algorithm (IDEA) for identifying the location and severity of the damage. To assess the capability of the proposed method, two numerical examples via different damage scenarios are considered. Then, a comparison between the proposed method and the existing damage identification method is provided. The outcomes reveal the high efficiency of the proposed method for finding the severity and location of joint damage considering noise effects.

Keywords： damage identification     beam-to-column connection     time-domain response     optimization    

HTML PDF Collect

Calculation method of radial stress and deformation on conic threaded connections with interference fit

Shoujun CHEN, Qiang LI, Qi AN,

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 3,   Pages 302-307 doi: 10.1007/s11465-010-0018-9

Abstract: paper presents a calculation method for radial stress distribution and deformation on conic threaded connectionsThe model offers a new way of calculating the radial stress and deformation on conic thread connections

Keywords： conic threaded connections     interference fit     radial stress     deformation     finite element analysis (FEA)    

HTML PDF Collect

State-of-the-art on resistance of bearing-type bolted connections in high strength steel

Guoqiang LI, Yifan LYU, Yanbo WANG

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 3,   Pages 569-585 doi: 10.1007/s11709-020-0607-6

Abstract: The current codes for design of bearing-type bolted connections of steel constructions were establishedA review of the research carried out on bearing-type bolted connections fabricated from conventionalIt is found that the behavior of bolted connections in HSS have no drastic difference compared to thatof conventional steel connections.in HSS while AISC 360-16 may overestimate the bearing resistance of bolted connections.

Keywords： High strength steel     bolted connection     bearing behavior     design codes    

HTML PDF Collect

Seismic retrofitting of severely damaged RC connections made with recycled concrete using CFRP sheets

Yasmin MURAD, Wassel AL BODOUR, Ahmed ASHTEYAT

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 2,   Pages 554-568 doi: 10.1007/s11709-020-0613-8

Abstract: out in this research to investigate the influence of CFRP sheets on the cyclic behavior of unconfined connectionsand hence the adopted repair configuration is recommended for retrofitting seismically vulnerable RC connections

Keywords： retrofitting     CFRP sheets     recycled concrete     pulverised fuel ash     silica fume     cyclic     beam-column connections    

HTML PDF Collect

Fragility assessment of wood sheathing panels and roof-to-wall connections subjected to wind loading

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4,   Pages 867-876 doi: 10.1007/s11709-021-0745-5

Abstract: safest roof sheathing (RS) is the 1.22 m × 1.22 m sheathing panel with 8 d nails, and the safest RW connections

Keywords： tornadoes     wind loads     low-rise buildings     fragility analysis     risk assessment     structural failures    

HTML PDF Collect

Influence of loading ratio on flat slab connections at elevated temperature: A numerical study

Rwayda Kh. S. AL-HAMD, Martin GILLIE, Safaa Adnan MOHAMAD, Lee S. CUNNINGHAM

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 3,   Pages 664-674 doi: 10.1007/s11709-020-0620-9

Abstract: Using the validated model, the specific case of flats slabs and the associated connections to supporting

Keywords： concrete     finite elements     fire     load-induced thermal strain     punching shear    

HTML PDF Collect

performance of fabricated continuous girder bridge with grouting sleeve-prestressed tendon composite connections

Frontiers of Structural and Civil Engineering   Pages 827-854 doi: 10.1007/s11709-023-0954-1

Abstract: fiber element model of a fabricated concrete pier with grouting sleeve-prestressed tendon composite connections

Keywords： seismic performance     continuous girder bridge     grouting sleeve-prestressed tendon composite connections    

HTML PDF Collect

Investigation of fatigue resistance of fillet-welded tube connection details for sign support structures

Hyungjoo CHOI, Husam NAJM

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 1,   Pages 199-214 doi: 10.1007/s11709-019-0592-9

Abstract: fillet-welded tube-to-transverse plate connection details are widely used for mast-arm and base-plate connectionswind loads, cyclic fatigue stresses are induced and they are the primary source of failure in welded connectionslife, fatigue damage, and fatigue safety factor to determine the fatigue performance of fillet-welded connections

Keywords： fatigue     weld connections     base plate     fillet welds    

HTML PDF Collect

Nonlinear experimental response of non-conventional composite steel and concrete connection

Tobia ZORDAN, Bruno BRISEGHELLA

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 1,   Pages 42-49 doi: 10.1007/s11709-008-0058-y

Abstract: An experiment was carried out on a set of full-scale specimens of a non-conventional connection between a concrete column and a composite steel and concrete beam defined on the basis of a number of requirements. The proposed connection, conceived in the ambit of semi-rigid joints, is aimed at combining general ease of construction with a highly simplified assembly procedure with a satisfying transmission of hogging moment at supports in continuous beams. For this purpose, the traditional shear studs used at the interface between the steel beam and the upper concrete slab, are also employed at the ends of the steel profiles welded horizontally to the end plates. The test is aimed at investigating the hogging moment response of the connection under incremental loads until failure.

Keywords： composite connections     nonlinear behaviour     hogging moment     monotonic tests    

HTML PDF Collect

Experimental and numerical analysis of beam to column joints in steel structures

Gholamreza ABDOLLAHZADEH, Seyed Mostafa SHABANIAN

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 4,   Pages 642-661 doi: 10.1007/s11709-017-0457-z

Abstract: under extreme loads such as earthquakes are the primary challenges in the modeling of beam-to-column connectionsnetwork methods have been presented in order to model the complex hysteresis behavior of beam-to-column connectionsneural network, the experiments were carried out on samples with real dimensions of beam-to-column connectionscombinational modeling is able to display the complex narrowed hysteresis behavior of the beam-to-column connections

Keywords： beam to column connections     experiments     component method     neural network model     combinational modeling    

HTML PDF Collect

Experimental study on slender buckling-restrained knee braces with round steel bar cores

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 1,   Pages 99-121 doi: 10.1007/s11709-022-0875-4

Abstract: This study aimed to investigate a novel slender buckling-restrained knee brace damper (BRKB) for welded and weld-free steel framing systems. The proposed BRKB adopts steel bar cores connected by a central coupler and restrained by tube buckling restrainers with a cover tube supporter. The advantages of the proposed damper include easy assembly compared to conventional buckling restrained braces, and high architectural flexibility for the retrofitting of large-span weld-free or welded steel moment-resisting systems. Specifically, by increasing the number of contraction allowances, undesirable failure mechanisms that are global instability and local buckling of the restrainer ends can be effectively suppressed because the more uniform plastic deformation of the core bar can be achieved longitudinally. In this study, displacement-controlled compression and cyclic loading tests were carried out to investigate the deformation capacities of the proposed BRKBs. Structural performance metrics associated with both loading tests, such as strength capacities, strains at the cover tubes and buckling restrainers, and hysteretic behaviors of the proposed damper under cyclic loads, were measured and discussed. Test results revealed that the geometrical characteristics of the cover tubes and adopted contraction allowances at the dampers play essential roles in their load-bearing capacities.

Keywords： weld-free beam-to-column connections     moment-resisting frame     cyclic and compression loading tests     buckling-restrained    

HTML PDF Collect

Visual commonsense reasoning with directional visual connections Research Articles

Yahong Han, Aming Wu, Linchao Zhu, Yi Yang,yahong@tju.edu.cn

Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 5,   Pages 615-766 doi: 10.1631/FITEE.2000722

Abstract: To boost research into cognition-level visual understanding, i.e., making an accurate inference based on a thorough understanding of visual details, (VCR) has been proposed. Compared with traditional visual question answering which requires models to select correct answers, VCR requires models to select not only the correct answers, but also the correct rationales. Recent research into human cognition has indicated that brain function or cognition can be considered as a global and dynamic integration of local neuron connectivity, which is helpful in solving specific cognition tasks. Inspired by this idea, we propose a to achieve VCR by dynamically reorganizing the that is contextualized using the meaning of questions and answers and leveraging the directional information to enhance the reasoning ability. Specifically, we first develop a GraphVLAD module to capture to fully model visual content correlations. Then, a contextualization process is proposed to fuse sentence representations with visual neuron representations. Finally, based on the output of , we propose to infer answers and rationales, which includes a ReasonVLAD module. Experimental results on the VCR dataset and visualization analysis demonstrate the effectiveness of our method.

Keywords： 视觉常识推理；有向连接网络；视觉神经元连接；情景化连接；有向连接    

HTML PDF Collect

Fatigue Strength Evaluation of Resin-Injected Bolted Connections Using Statistical Analysis

José António Fonseca de Oliveira Correia, Bruno Alexandre Silva Pedrosa, Patrícia Cordeiro Raposo, Abílio Manuel Pinho De Jesus, Helena Maria dos Santos Gervásio, Grzegorz Stanisław Lesiuk, Carlos Alberto da Silva Rebelo, Rui Artur Bartólo Calçada, Luís Alberto Proença Simões da Silva

Engineering 2017, Volume 3, Issue 6,   Pages 795-805 doi: 10.1016/j.eng.2017.12.001

Abstract: authors aiming at evaluating the fatigue behavior of single and double shear resin-injected bolted connectionsFurthermore, research on the feasibility of using both bonded and bolted connections is shown.

Keywords： Fatigue     Connections     Structural reinforcements     Structural adhesives     S-N curves     Resin-injected bolts    

HTML PDF Collect

Self-centering steel plate shear walls for improving seismic resilience

Patricia M. CLAYTON,Daniel M. DOWDEN,Chao-Hsien LI,Jeffrey W. BERMAN,Michel BRUNEAU,Laura N. LOWES,Keh-Chuan TSAI

Frontiers of Structural and Civil Engineering 2016, Volume 10, Issue 3,   Pages 283-290 doi: 10.1007/s11709-016-0344-z

Abstract: Post-tensioned (PT) beam-to-column connections provide system recentering capabilities.

Keywords： self-centering     steel plate shear walls     large-scale experiment     post-tensioned connections     performance-based    

HTML PDF Collect

Title Author Date Type Operation

Calculation method of load distribution on pipe threaded connections under tension load

Shoujun CHEN, Lianxin GAO, Qi AN

Journal Article

Damage identification in connections of moment frames using time domain responses and an optimization

Journal Article

Calculation method of radial stress and deformation on conic threaded connections with interference fit

Shoujun CHEN, Qiang LI, Qi AN,

Journal Article

State-of-the-art on resistance of bearing-type bolted connections in high strength steel

Guoqiang LI, Yifan LYU, Yanbo WANG

Journal Article

Seismic retrofitting of severely damaged RC connections made with recycled concrete using CFRP sheets

Yasmin MURAD, Wassel AL BODOUR, Ahmed ASHTEYAT

Journal Article

Fragility assessment of wood sheathing panels and roof-to-wall connections subjected to wind loading

Journal Article

Influence of loading ratio on flat slab connections at elevated temperature: A numerical study

Rwayda Kh. S. AL-HAMD, Martin GILLIE, Safaa Adnan MOHAMAD, Lee S. CUNNINGHAM

Journal Article

performance of fabricated continuous girder bridge with grouting sleeve-prestressed tendon composite connections

Journal Article

Investigation of fatigue resistance of fillet-welded tube connection details for sign support structures

Hyungjoo CHOI, Husam NAJM

Journal Article

Nonlinear experimental response of non-conventional composite steel and concrete connection

Tobia ZORDAN, Bruno BRISEGHELLA

Journal Article

Experimental and numerical analysis of beam to column joints in steel structures

Gholamreza ABDOLLAHZADEH, Seyed Mostafa SHABANIAN

Journal Article

Experimental study on slender buckling-restrained knee braces with round steel bar cores

Journal Article

Visual commonsense reasoning with directional visual connections

Yahong Han, Aming Wu, Linchao Zhu, Yi Yang,yahong@tju.edu.cn

Journal Article

Fatigue Strength Evaluation of Resin-Injected Bolted Connections Using Statistical Analysis

José António Fonseca de Oliveira Correia, Bruno Alexandre Silva Pedrosa, Patrícia Cordeiro Raposo, Abílio Manuel Pinho De Jesus, Helena Maria dos Santos Gervásio, Grzegorz Stanisław Lesiuk, Carlos Alberto da Silva Rebelo, Rui Artur Bartólo Calçada, Luís Alberto Proença Simões da Silva

Journal Article

Self-centering steel plate shear walls for improving seismic resilience

Patricia M. CLAYTON,Daniel M. DOWDEN,Chao-Hsien LI,Jeffrey W. BERMAN,Michel BRUNEAU,Laura N. LOWES,Keh-Chuan TSAI

Journal Article