Effect of Intermediate Stiffeners on the Behaviors of Partially Concrete Encased Steel Beams

Chen, Chengcheng; Sudibyo, Teguh

doi:10.1155/2018/8672357

Cited by 4 publications

(2 citation statements)

References 14 publications

(23 reference statements)

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“…Many researchers have studied the seismic behaviour of structural components [18][19][20]. Herrera et al [21] carried out a large-scale experimental study to investigate the cyclic behaviour of T-shaped moment-resisting frame (MRF) cantilever beams with openings placed in the midspan.…”

Section: Introductionmentioning

confidence: 99%

Effect of Web Openings on Flexural Behaviour of Underground Metro Station RC Beams under Static and Cyclic Loading

Tingjin

Chen

Feng

et al. 2020

Advances in Civil Engineering

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This paper investigates the influence of multiple transverse web openings on the flexural behaviour of underground metro station reinforced concrete (RC) beams. This problem is outlined with an actual underground engineering project, in which the web opening used in the RC beams violates the current specifications. A total of five beams with different numbers of web openings are fabricated and tested under static and cyclic loading conditions, thereby simulating actual operations in unfavourable conditions. The results suggest that the existence of the openings decreases the loadbearing capacity, ductility, stiffness, and energy dissipation ability of the RC beams. Moreover, the results show that the corners of the openings are the weakest parts of the beams. However, additional reinforcements around the openings can partially mitigate the impact of the openings on the loadbearing and seismic performance of the RC beams. The laboratory experiments presented herein not only provide guidelines for the use of RC beams with web openings in actual engineering projects, especially underground projects where RC beams with web openings have seldom been investigated, but also shed light on improving the related design specifications.

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Section: Introductionmentioning

confidence: 99%

Effect of Web Openings on Flexural Behaviour of Underground Metro Station RC Beams under Static and Cyclic Loading

Tingjin

Chen

Feng

et al. 2020

Advances in Civil Engineering

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“…[1][2][3][4] So far, numerous studies have been conducted on PEC beams and columns. [5][6][7][8][9][10][11][12][13] Mucedero et al [5] reported that the pushdown curve of the structure with PEC beams showed the feature of monotonically increasing due to apparent catenary action. Piquer and Hernández-Figueirido [13] found that the PEC column had good fire resistance and economy compared with the steel column with or without protection.…”

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confidence: 99%

Influence of coupling ratio on seismic behavior of hybrid coupled partially encased composite wall system

Zhou

Shi

et al. 2022

Structural Design Tall Build

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Partially encased composite (PEC) members are novel composite members that efficiently exploit the advantages of mechanical properties of concrete and steel. However, the application of PEC members is limited to low-and mid-rise buildings. To overcome this limitation, a study was conducted to assess the seismic performance of a newly proposed steel-concrete hybrid coupled wall consisting of PEC wall piers coupled by means of steel beams. Parametric analysis was conducted to investigate the elastic coupling ratio (CR elastic ) and the way of changing CR elastic on the seismic behavior of the hybrid coupled PEC wall. The results showed that the CR elastic was the main parameter that affected the seismic performance of the wall. The way of changing CR elastic had little influence on the trend of the energy dissipation capacity and strength reservation of the wall. The failure mode and the development of plastic hinges of the wall were also not affected by the way of changing CR elastic . Both too large and too small CR elastic were detrimental to the seismic performance of the wall.To form an ideal plastic hinge development mode and experience good seismic performance, it is suggested that the reasonable range of CR elastic for the wall was 60%-70%.elastic coupling ratio, numerical simulation, partially encased composite member, seismic behavior, steel-concrete hybrid coupled wall | INTRODUCTIONPartially encased composite (PEC) members are a new type of composite structural members with high efficiency and extensive utilization of the advantages offered by concrete and steel. PEC members not only have the merits of high load capacity, good deformation capacity, excellent seismic performance, and fire resistance but also have the advantage of simplified connection details between concrete and steel members; thereby, they fully realize an industrialized mode of construction and assembly. [1][2][3][4] So far, numerous studies have been conducted on PEC beams and columns. [5][6][7][8][9][10][11][12][13] Mucedero et al. [5] reported that the pushdown curve of the structure with PEC beams showed the feature of monotonically increasing due to apparent catenary action. Piquer and Hernández-Figueirido [13] found that the PEC column had good fire resistance and economy compared with the steel column with or without protection. However, because of the limitations imposed by the rigidity of frame structures, the scope of application of existing PEC structures is limited to mid-rise and low-rise buildings in seismic regions. Therefore, in order to broaden the applications of PEC structures and meet the requirements of high-rise buildings in terms of their seismic performance, research on PEC shear walls is gradually being conducted. The preliminary results have showed that PEC shear wall has a full and stable hysteresis curve, excellent energy dissipation capacity, and good seismic performance. [14][15][16]

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Experimental and simulative study on seismic performance of stiffener‐plate PEC beam‐column joint

Chen,

Li,

Wang

et al. 2024

Structural Concrete

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An innovative assembled stiffener‐plate PEC beam‐column joint (SP‐PEC) is proposed to improve better constructability. In this paper, 12 PEC beam‐column joint specimens were subjected to quasi‐static cyclic tests. The design parameters included the thickness of the stiffener‐plate (equal‐stiffness thickness at load standard combination, full‐stiffness thickness of the cross‐section, and 120% of full‐stiffness thickness of the cross‐section) and the beam‐column connection with or without the stub beam. The results revealed that the assembled SP‐PEC beam‐column joint exhibited better seismic performance than the conventional PEC beam‐column concrete joint. The strength degradation coefficients of SP‐PEC beam‐column nodes are all greater than 0.92, and the stiffness decreases slowly. The specimens had good bearing capacity, deformation ability, energy dissipation capacity, and stiffness under a reasonable stiffener‐plate thickness. Then, the bearing capacity calculation formulae of the novel joint with certain prediction accuracy were proposed. Besides, the finite element models of the test specimens were established in ABAQUS and validated against the test results. Finally, further investigations of the SP‐PEC joint configuration by finite element analysis and engineering design recommendations for the assembled SP‐PEC beam‐column joint were provided.

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Effect of Intermediate Stiffeners on the Behaviors of Partially Concrete Encased Steel Beams

Cited by 4 publications

References 14 publications

Effect of Web Openings on Flexural Behaviour of Underground Metro Station RC Beams under Static and Cyclic Loading

Effect of Web Openings on Flexural Behaviour of Underground Metro Station RC Beams under Static and Cyclic Loading

Influence of coupling ratio on seismic behavior of hybrid coupled partially encased composite wall system

Experimental and simulative study on seismic performance of stiffener‐plate PEC beam‐column joint

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