Study on constitutive model of shear performance in panel zone of connections composed of CFSSTCs and steel-concrete composite beams with external diaphragms

Du, Guanglong; Bie, Xue-Meng; Li, Zhao; Guan, Weijun

doi:10.1016/j.engstruct.2017.11.024

Cited by 32 publications

(12 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Concrete Filled Tube (CFT) structures are widely used in engineering due to their excellent structural and constructional performance [1,2]; this is especially the case for typical forms of Concrete Filled Steel Tube (CFST) structures [3][4][5][6][7][8][9][10]. Attention also has been paid to Concrete Filled Fiber Reinforced Polymer (FRP) Tubes, in view of their anti-corrosion properties, which can be better adapted to corrosive environments than CFST [11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Residual Axial Bearing Capacity of Concrete-Filled Circular Steel Tubular Columns (CFCSTCs) after Transverse Impact

Andjelic

et al. 2018

Applied Sciences

Self Cite

View full text Add to dashboard Cite

Abstract:The purpose of this research is to study the effect of both transverse impact, and ratio of outer diameter to thickness of outer steel tube (D/t), on the residual axial bearing capacity of concrete-filled circular steel tubular columns (CFCSTCs). A total of sixteen samples, including four samples left untreated for comparison, are experimentally studied to investigate the effect of both drop-hammer transverse impact height (H), and D/t ratio, on the residual axial bearing capacity of CFCSTCs. The failure mode, load-displacement curves, load-strain curves, and residual axial bearing capacity of those samples are extensively investigated. A finite element analysis (FEA) model is established to predict the effect of D/t ratio on the residual axial bearing capacity of CFCSTCs. The results indicate that the H and the D/t ratio have noticeable effects on the axial compression performance of CFCSTCs. Failure mode of samples is commonly local buckling. In addition, maximum reduction of the axial bearing capacity of columns reaches about 35% compared with that of untreated columns. The results also show that the bearing capacity of the column increases with a decreasing D/t ratio of the same diameter (D).

show abstract

Section: Introductionmentioning

confidence: 99%

Residual Axial Bearing Capacity of Concrete-Filled Circular Steel Tubular Columns (CFCSTCs) after Transverse Impact

Andjelic

et al. 2018

Applied Sciences

Self Cite

View full text Add to dashboard Cite

show abstract

“…The WPEI analysis was applied to calculate the energy of the received signal. As the black curve shows in the figure, the signal received in Area-A3 has a much smaller amplitude than those in Area-A1 and Area-A2, which means the received signal in the debonding area of 36 cm 2 is smaller than those in the areas of 4 cm 2 and 9 cm 2 . Figure 9b,c shows the similar variation trend of the received signals by S2.…”

Section: Experimental Results and Analysismentioning

confidence: 94%

“…Steel structures of various forms are widely used in constructions [1,2], however, with adverse factors such as corrosion [3,4], dynamic loads [5,6], and impacts [7,8], steel structures are subject to damages [9,10]. Carbon fiber reinforced polymer (CFRP) materials are widely used to retrofit or reinforce damaged steel structures [11][12][13] due to their high strength-to-weight ratio, excellent corrosion resistance, and fast and easy installation.…”

Section: Introductionmentioning

confidence: 99%

Detecting Debonding between Steel Beam and Reinforcing CFRP Plate Using Active Sensing with Removable PZT-Based Transducers

Jiang

Deng

et al. 2019

Sensors

View full text Add to dashboard Cite

Carbon fiber reinforced polymer (CFRP) plates are widely used to retrofit or reinforce steel structures, and the debonding damage between the steel structure and the CFRP plate is a typical failure in strengthening steel structures. This paper proposes a new approach to detecting debonding between a steel beam and a reinforcing CFRP plate by using removable lead zirconate titanate (PZT)-based transducers and active sensing. The removable PZT-based transducers are used to implement the active sensing approach, in which one transducer, as an actuator, is used to generate stress wave, and another transducer, as a sensor, is used to detect the stress wave that propagates across the bonding between the steel beam and the reinforcing CFRP plate. The bonding condition significantly influences the received sensor signal, and a wavelet-packet-based energy index (WPEI) is used to quantify the energy of the received signal to evaluate the severity of debonding between the steel beam and the reinforcing CFRP plate. To validate the proposed approach, experimental studies were performed, and two removable PZT-based transducers were designed and fabricated to detect the debonding between a steel beam and the reinforcing CRFP plate. The experimental results demonstrate the feasibility of the proposed method in detecting the debonding between a steel beam and the reinforcing CFRP plate using removable PZT-based transducers.

show abstract

“…Degradation of concrete applied in concrete structure, the reinforced concrete structure, the steel‐concrete composite structures, etc., which has been frequently occurred due to the initiation and propagation of cracks, has attracted more and more attention in recent years although concrete was once treated as a durable maintenance‐free construction material. The reduction of mechanical property and deleterious volume change in constrained condition, due to external loading and shrinkage actions, respectively, easily leads to the initiation and propagation of cracks, which may provide a direct path for penetration for the water and chloride ions into concrete.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on the compressive strength and shrinkage of concrete containing fly ash and ground granulated blast‐furnace slag

Zhang

2019

Structural Concrete

View full text Add to dashboard Cite

This paper presents an experimental investigation on the compressive strength and shrinkage (drying shrinkage and plastic shrinkage) property of concrete specimens with fly ash (FA) and ground granulated blast-furnace slag (GGBS), and moreover, the content level and curing age were considered in this experiment. The resultsshow that the addition of FA and GGBS has a significant effect on the compressive strength and shrinkage properties of concrete. It indicated that the compressive strength of specimens decreases gradually due to the reduction of cement hydration products, when the curing age is less than 14 days. Nevertheless, once the curing time exceeds 7 days, the compressive strength increases initially and then decreases. Similarly, the compressive strength of concrete with GGBS increases slightly at first and then decreases, when the content level exceeds the critical value. The variety rule of plastic shrinkage cracks with FA and GGBS is similar to that of compressive strength; however, the variety rule of drying shrinkage strain is contrary to the above experimental results. Furthermore, in the early stage of curing, the GGBS is the main factor on improving strength and drying shrinkage properties, though for the later stage, the FA becomes the main factor instead of GGBS. K E Y W O R D S compressive strength, drying shrinkage, fly ash, ground granulated blast-furnace slag, plastic shrinkage

show abstract

Study on constitutive model of shear performance in panel zone of connections composed of CFSSTCs and steel-concrete composite beams with external diaphragms

Cited by 32 publications

References 12 publications

Residual Axial Bearing Capacity of Concrete-Filled Circular Steel Tubular Columns (CFCSTCs) after Transverse Impact

Residual Axial Bearing Capacity of Concrete-Filled Circular Steel Tubular Columns (CFCSTCs) after Transverse Impact

Detecting Debonding between Steel Beam and Reinforcing CFRP Plate Using Active Sensing with Removable PZT-Based Transducers

Experimental study on the compressive strength and shrinkage of concrete containing fly ash and ground granulated blast‐furnace slag

Contact Info

Product

Resources

About