Hybrid simulation of a carbon fibre–reinforced polymer-strengthened continuous reinforced concrete girder bridge

Tian, Shuai; Jia, Hongxing; Lin, Yuanzheng

doi:10.1177/1369433217691772

Cited by 6 publications

(2 citation statements)

References 20 publications

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“…Many studies have attempted to improve the serviceability of composite beams. Some high-performance concretes with fiberreinforced polymer have been employed in composite beams to prevent the corrosion of steel rebar and improve weather resistance (Tian et al, 2017). In recent years, remarkable progress has been made in the development of ultra-high-performance concrete (UHPC).…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Bending Behavior of Reinforced Ultra-High-Performance Concrete Decks

Wang

Deng

Zhao

et al. 2019

Front. Built Environ.

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Ultra-high-performance Concrete (UHPC) has a wide range of potential civil engineering applications, owing to its excellent mechanical properties and durability. To investigate the bending behavior of reinforced UHPC components, nine reinforced UHPC deck specimens were tested by conducting four-point bending experiments. The crack development, load-carrying capacity, and strain distribution were observed, and the tests results revealed that the introduction of steel fibers into UHPC obviously improved the structure's toughness and crack resistance. Based on the tests results, a theoretical formula was derived for calculating the bending stiffness of the UHPC decks during the entire loading process, which was divided into three representative stages based on the initial cracking and yielding. The results for the load-deflection response obtained by the formulas are in good agreement with the experimental results.

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Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Bending Behavior of Reinforced Ultra-High-Performance Concrete Decks

Wang

Deng

Zhao

et al. 2019

Front. Built Environ.

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“…Second, the analysis accuracy should be definite. Previously, because of the limitations on the computational efficiency of the FE analysis programs, fibre models and macro-scale models were commonly used in hybrid simulations (Castaneda et al , 2015; Saouma et al , 2012; Jiran, 2008; Tian et al , 2017). For instance, Takahashi et al (2008) used the fibre model of OpenSees in an internationally distributed hybrid simulation of a two-span bridge.…”

Section: Introductionmentioning

confidence: 99%

Seismic application of multi-scale finite element model for hybrid simulation

Jia¹,

Tian²,

Li³

et al. 2018

IJSI

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Purpose Hybrid simulation, which is a general technique for obtaining the seismic response of an entire structure, is an improvement of the traditional seismic test technique. In order to improve the analysis accuracy of the numerical substructure in hybrid simulation, the purpose of this paper is to propose an innovative hybrid simulation technique. The technique combines the multi-scale finite element (MFE) analysis method and hybrid simulation method with the objective of achieving the balance between the accuracy and efficiency for the numerical substructure simulation. Design/methodology/approach To achieve this goal, a hybrid simulation system is established based on the MTS servo control system to develop a hybrid analysis model using an MFE model. Moreover, in order to verify the efficiency of the technique, the hybrid simulation of a three-storey benchmark structure is conducted. In this simulation, a ductile column—represented by a half-scale scale specimen—is selected as the experimental element, meanwhile the rest of the frame is modelled as microscopic and macroscopic elements in the Abaqus software simultaneously. Finally, to demonstrate the stability and accuracy of the proposed technique, the seismic response of the target structure obtained via hybrid simulation using the MFE model is compared with that of the numerical simulation. Findings First, the use of the hybrid simulation with the MFE model yields results similar to those obtained by the fine finite element (FE) model using solid elements without adding excessive computing burden, thus advancing the application of the hybrid simulation in large complex structures. Moreover, the proposed hybrid simulation is found to be more versatile in structural seismic analysis than other techniques. Second, the hybrid simulation system developed in this paper can perform hybrid simulation with the MFE model as well as handle the integration and coupling of the experimental elements with the numerical substructure, which consists of the macro- and micro-level elements. Third, conducting the hybrid simulation by applying earthquake motion to simulate seismic structural behaviour is feasible by using Abaqus to model the numerical substructure and harmonise the boundary connections between three different scale elements. Research limitations/implications In terms of the implementation of the hybrid simulation with the MFE model, this work is helpful to advance the hybrid simulation method in the structural experiment field. Nevertheless, there is still a need to refine and enhance the current technique, especially when the hybrid simulation is used in real complex engineering structures, having numerous micro-level elements. A large number of these elements may render the relevant hybrid simulations unattainable because the time consumed in the numeral calculations can become excessive, making the testing of the loading system almost difficult to run smoothly. Practical implications The MFE model is implemented in hybrid simulation, enabling to overcome the problems related to the testing accuracy caused by the numerical substructure simplifications using only macro-level elements. Originality/value This paper is the first to recognise the advantage of the MFE analysis method in hybrid simulation and propose an innovative hybrid simulation technique, combining the MFE analysis method with hybrid simulation method to strike a delicate balance between the accuracy and efficiency of the numerical substructure simulation in hybrid simulation. With the help of the coordinated analysis of FEs at different scales, not only the accuracy and reliability of the overall seismic analysis of the structure is improved, but the computational cost can be restrained to ensure the efficiency of hybrid simulation.

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Implementation of real-time hybrid simulation using a large shake table with onboard actuators

Lin,

Xu,

Wang

et al. 2024

Engineering Structures

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Hybrid simulation of a carbon fibre–reinforced polymer-strengthened continuous reinforced concrete girder bridge

Cited by 6 publications

References 20 publications

Experimental Investigation of Bending Behavior of Reinforced Ultra-High-Performance Concrete Decks

Experimental Investigation of Bending Behavior of Reinforced Ultra-High-Performance Concrete Decks

Seismic application of multi-scale finite element model for hybrid simulation

Implementation of real-time hybrid simulation using a large shake table with onboard actuators

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