Design of bolted side-plated reinforced-concrete beams with partial interaction

Li, Ling‐Zhi; Jiang, Chang-Jiu; Su, R.K.L.; Lo, S.H.

doi:10.1680/jstbu.15.00037

Cited by 20 publications

(4 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Previous researches [27][28][29][30] demonstrated that partial interaction was caused by the slippage between the steel jacket and substrate through the bolt connection, which led to a better strengthening effect. To achieve better collaboration between the masonry substrate and RPC coating, twenty-two 6 mm diameter U-shaped steel bars at a spacing of 250 mm were precast in the mortar joints as shown in Figure 1.…”

Section: Description Of Specimensmentioning

confidence: 99%

Experimental Study on Seismic Strengthening of Confined Masonry Walls Using RPC

Wang

et al. 2019

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

Masonry structures without effective reinforcement are vulnerable to seismic excitation. An innovative strengthening technique was proposed for damaged and undamaged masonry walls. Six confined masonry units with two aspect ratios were tested under in-plane lateral cyclic loading, which consisted of two control walls, two original walls strengthened with reactive powder concrete (RPC-1), and two damaged walls repaired with RPC (RPC-2). The results of the specimens retrofitted with RPC demonstrated that the proposed technique significantly enhanced the seismic performance of masonry walls in terms of lateral strength, ductility, and energy dissipation. Furthermore, the two repaired specimens had a better distributed cracking pattern than the two strengthened specimens. The analysis of the results leads to a better understanding of the effect and mechanism of RPC seismic retrofitting for confined masonry walls.

show abstract

Section: Description Of Specimensmentioning

confidence: 99%

Experimental Study on Seismic Strengthening of Confined Masonry Walls Using RPC

Wang

et al. 2019

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

show abstract

“…A simplified transverse slip model has been established by the authors based on the experimental and numerical results [37][38][39]. The shear ultimate limit state and the shear forces in the longitudinal and transverse directions (T m,i & V m,i ) of a BSP beam are shown in Figure 13a-c. As is shown in Figure 13d, a piecewise linear simplified model can be introduced to depict the distribution of transverse slips [5], where S l and S tr represent the relative longitudinal and transverse slips caused by the shear forces.…”

Section: Shear Capacity Model Based On Simplified Transverse Slipmentioning

confidence: 99%

The Use of Bolted Side Plates for Shear Strengthening of RC Beams: A Review

Liu

2018

Sustainability

Self Cite

View full text Add to dashboard Cite

Reinforced concrete (RC) beams may need to be strengthened because of material deterioration, structure aging, change of building function, defective design, and the decrease of structural reliability caused by accidental disasters such as earthquake and fire. Thus, the retrofitting of RC beams has become a crucial problem, especially for the old buildings constructed before 1980 in mainland China. A variety of studies have proven that the bolted side-plating (BSP) method is feasible and effective for rehabilitating RC beams in existing buildings and infrastructures. The aim of this paper is mainly to review the previous studies conducted by the authors on the shear performance of reinforced concrete (RC) beams retrofitted using the BSP technique, including experimental, theoretical, and numerical studies.

show abstract

“…However, it may lead to undesirable brittle failure when the bolted side-plated beams are over-reinforced (Ahmed et al, 2000; Su et al, 2010). The mechanical slipping of the bolts affects the strengthening effect (Li et al, 2016; Nguyen et al, 2001; Shan and Su, 2018; Su and Zhu, 2005). The experimental results showed that the premature debonding of steel plates can be prevented by composite anchorage of adhesive and bolts (Atea, 2019; Gao et al, 2006), while adhesive injection at the interface and bolt holes can reduce the mechanical slipping to some extent.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on flexural strengthening of reinforced concrete beams with U-shaped steel under secondary load

Lin

Tang

et al. 2021

Advances in Structural Engineering

View full text Add to dashboard Cite

This study proposes a new method to strengthen reinforced concrete (RC) beams with U-shaped steel, which can achieve rapid construction and great improvement in the flexural performance of RC beams. To investigate the influence of secondary load defined as newly applied loads after strengthening on the strengthening effect, a total of nine specimens were tested under four-point bending, including a reference beam, a strengthened beam under initial load, and seven strengthened beams under secondary load. The initial loading degree, the thickness of the bottom plate, and the height of the steel box were the main variables considered in this study. Testing results showed that compared with the reference beam, the flexural performance of strengthened beams was significantly enhanced, indicating the good joint performance of the U-shaped steel and the RC beams. Among the three main variables, the initial loading degree was found to have a minimal effect on the flexural performance while the thickness of the bottom plate and the height of the steel box had considerable influence, with the latter having a more pronounced effect. Testing results also showed that most of the strengthened beams experienced flexural failures, which were reflected by steel web peeling and buckling, and concrete crushing. Moreover, a formula was derived for calculating the flexural capacity of strengthened beams under secondary load. The results from the derived formula were found to be in good agreement with those from experiments.

show abstract

Design of bolted side-plated reinforced-concrete beams with partial interaction

Cited by 20 publications

References 26 publications

Experimental Study on Seismic Strengthening of Confined Masonry Walls Using RPC

Experimental Study on Seismic Strengthening of Confined Masonry Walls Using RPC

The Use of Bolted Side Plates for Shear Strengthening of RC Beams: A Review

Experimental study on flexural strengthening of reinforced concrete beams with U-shaped steel under secondary load

Contact Info

Product

Resources

About