Seismic performance of precast concrete beam-column joint based on the bolt connection

Ding, Kaihua; Yu, Ye; Ma, Wei

doi:10.1016/j.engstruct.2021.111884

Cited by 40 publications

(21 citation statements)

References 11 publications

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“…e load was controlled by the displacement angle, where the maximum displacement was 130 mm. ree turns were loaded at each stage before 30 mm, and two turns were loaded at each stage afterwards (since 40 mm stage) [38].…”

Section: Finite Element Analysis Models Abaqus Finite Elementmentioning

confidence: 99%

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Hysteresis Behavior and Design of the New Autoclaved Lightweight Concrete (ALC) External Panel Connector with the Steel Frame

Ding

Zhang

et al. 2022

Advances in Materials Science and Engineering

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This paper proposes a new flexible connector for the autoclaved lightweight concrete (ALC) panel with the steel beam. It is a universal upper and lower crossing connector, with load-bearing and limitation holes; then, the seismic capacity of this connector is investigated in the simulations and full-scale tests. Firstly, the finite element simulations of the new connector and traditional connector (L-hooked bolt) were made by ABAQUS, which proved the reliability of the new connector by comparing them in low-cyclic loading. Secondly, in order to analyze the phenomenon and data of the two connectors which are in the same test conditions of simulation, the full-scale tests of the steel frame were conducted. The damage of the ALC panel at different connectors and at different test load displacements is described in detail. The contribution of the connectors to the steel frame and the ALC panel is investigated in depth during the elastic, elastoplastic, and plastic stages of the steel frames. The test result is similar to the simulation result roughly, in which the new connector has better seismic capability. In minor earthquakes, the ALC panel frame with the new connector has better synergistic capacity of panels, while in large earthquakes, it can provide certain stiffness to the structure. Compared with the L-hooked bolt, the maximum bearing capacity of the structure with the new connector increases by 5.2%, and the yield displacement delays by 27.5%, which results in the increase of ductility by 9.8%. In terms of energy consumption capacity, the equivalent damping factor of the new connector increases by 10.2% and 35.3% at the yield and ultimate state, respectively. The FEM simulation results can represent the actual test results well. To summarize, the new ALC panel connector in this paper has excellent seismic capacity and good synergistic, which can provide a reference for the development and application of new types of the ALC connector.

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Section: Finite Element Analysis Models Abaqus Finite Elementmentioning

confidence: 99%

“…After 60 mm, displacement was applied twice for each. is test was preloaded with 2 mm and loaded for three rotations to confirm that both the steel frame loading version and the booster's splice gap were properly adjusted [38].…”

Section: Loading System Of the Testmentioning

confidence: 99%

Hysteresis Behavior and Design of the New Autoclaved Lightweight Concrete (ALC) External Panel Connector with the Steel Frame

Ding

Zhang

et al. 2022

Advances in Materials Science and Engineering

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“…Gennaro et al [13] tested an isolated single dowel connection and a refined one in a pushover experiment. Ding et al [14] put forward a dry connection with a bolt and claimed that the energy dissipation capacity of the proposed connection could be improved significantly with a higher strength grade for the bolt.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Seismic Performance of a Hybrid Beam–Column Connection in a Precast Concrete Frame

Chen

Xie

et al. 2022

Buildings

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Prefabricated beam–column connections are the most vulnerable components of prefabricated buildings during earthquake events. The seismic performance of the beam–column connection is functional as the critical component plays a key role in structural safety. This study aimed to develop a novel hybrid prefabricated concrete (HPC) connection, combining with wet and dry connection techniques, to enhance the seismic performance of prefabricated concrete frames. A quasi-static experimental investigation was carried out to examine the seismic performance of the proposed connection. Two full-scale prefabricated connection specimens utilizing the proposed HPC connection and another code-defined monolithic prefabricated concrete (PC) connection were tested under cyclic loading, keeping the axial load on the column constant. The ductility, stiffness degradation, energy dissipation capacity, post-tensioned force, and residual displacement were obtained based on the experimental output. The results indicated that the HPC connection developed had high construction efficiency and better seismic performance than the conventional PC connection. The strength and energy dissipation capacity were significantly improved by up to 52% and 10%, respectively. The cracking and stiffness degradation were well-controlled.

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“…It can therefore often be considered as a semi-rigid joint [3]. In concrete structures, many beam-column connections can be seen as semi-rigid joints, such as bolted connections of precast concrete beams [4] and precast simple shear beam-column connections [5]. In steel structures, there are also many joint systems which can be considered as semi-rigid, such as the MERO joint systems, the bolt-ball joints, and the space-truss connectors [6].…”

Section: Introductionmentioning

confidence: 99%

Damage Identification of Semi-Rigid Joints in Frame Structures Based on Additional Virtual Mass Method

Zhang

et al. 2022

Sensors

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In civil engineering, the joints of structures are complex, and their damage is generally hard to be detected. Due to the insensitivity of structural modal information to local joint damage, this paper presents a method based on additional virtual mass for damage identification of a semi-rigid joint in a frame structure. Firstly, the modeling of a semi-rigid is described. Secondly, the frequency response of the virtual structure is constructed, and the natural frequency of the constructed virtual structure is extracted by the ERA method. By adding multiple values of virtual masses at different positions, the natural frequency information sensitive to joint damage for damage identification is effectively increased. Based on the above theory, qualitative identification of joint damage is proposed to detect the potential damage, and identification of both damage location and its extent is presented, using natural frequency. Improved Orthogonal Matching Pursuit (IOMP) algorithm is employed to improve the accuracy of the natural frequency-based method for damage identification. At last, numerical simulation of a three-story frame is performed to discuss and to verify the effectiveness of the proposed method.

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Seismic performance of precast concrete beam-column joint based on the bolt connection

Cited by 40 publications

References 11 publications

Hysteresis Behavior and Design of the New Autoclaved Lightweight Concrete (ALC) External Panel Connector with the Steel Frame

Hysteresis Behavior and Design of the New Autoclaved Lightweight Concrete (ALC) External Panel Connector with the Steel Frame

Experimental Investigation of Seismic Performance of a Hybrid Beam–Column Connection in a Precast Concrete Frame

Damage Identification of Semi-Rigid Joints in Frame Structures Based on Additional Virtual Mass Method

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