Experimental study on the seismic behavior of precast concrete column with grouted corrugated sleeves and debonded longitudinal reinforcements

Chen, Jun; Zhao, Chenhui; Ding, Fa‐xing; Xiang, Ping

doi:10.1177/1369433219858451

Cited by 20 publications

(12 citation statements)

References 21 publications

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“…After QSCTs, the column exhibited excellent ED and strong self-centering capacity (SCC). Considering the partial debonding of ED bars (27.8 d s ), QSCTs were conducted by Chen et al (2019), and the results showed revealed a decreased bending capacity but only minor degradation of the shear strength.…”

Section: Existing Experimental Investigations Of Precast Segmental Br...mentioning

confidence: 99%

Review of experimental investigations on seismic performance of precast segmental bridge columns in seismic regions

Zhu

et al. 2023

Advances in Structural Engineering

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Due to the fast construction and low interference, precast segmental bridge columns have gained increasing attention for use in non-seismic regions. However, their applications in seismic areas remain scarce due to their ambiguous dynamic performance. To estimate the seismic performance of PSBCs, existing quasi-static cyclic tests and shaking table tests are gathered and reviewed in this study. According to the structural details and material property at the joints, the PSBCs are categorized as 11 types based on the connection type, namely grouted splice sleeve couplers (GSSCs), grouted corrugated duct connections (GCDCs), wet joint connections (WJCs), mechanical bar splice connections, socket connections (SCs), unbonded post-tensioned tendon connections (UPTCs), partial precast columns (PPCs), hybrid connections (HCs), high-strength steel bars (HSBs), high-performance concrete (HPC), and external dissipators (EXDs). Based on the experimental results, the failure reason of each connection types are discussed and the effective structural details are suggested. And also, the PSBCs are divided into those with ductile and resilient connections according to the damage levels, residual drift ratios, displacement ductility coefficients, equivalent viscous damping ratios and effective stiffness parameters. With the achievements in this research, the application of PSBCs is expected to be promoted in medium-to-high seismic regions.

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Section: Existing Experimental Investigations Of Precast Segmental Br...mentioning

confidence: 99%

Review of experimental investigations on seismic performance of precast segmental bridge columns in seismic regions

Zhu

et al. 2023

Advances in Structural Engineering

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“…Many scholars have extensively studied the synergistic performance between steel beams and concrete slabs. Steel-concrete composite structures are widely used in the field of construction due to their excellent mechanical performances (Xiang et al, 2017; Deng et al, 2021; Chen et al, 2019b). In the practical use of steel-concrete composite beams, the cooperative work between concrete slab and steel beam has always been an important issue in composite structures.…”

Section: Introductionmentioning

confidence: 99%

Investigations on the shearing performance of composite beams with group studs

Shao-qian

Zhang

et al. 2023

Advances in Structural Engineering

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Steel-concrete composite beams are widely used in building structures due to the excellent mechanical performances. In the application of steel-concrete composite beam, the problem exists in the coordination between concrete slab and steel beam. In this work, based on the Eurocode-4, a series of four 1:1 full-size push-out specimens were designed to study the influence of different napping arrangement styles on the shear performance of the napping joints in the cast-in-place specimens and prefabricated specimens. Based on the test results, finite element analysis was finished for parametric analysis. The test results show that the final failure modes of the specimens include concrete failure and bolt shear. Increasing the concrete grade of the precast specimen can improve the shear resistance of the bolt group. The uniformly arranged specimens show higher shear stiffness and ductility compared to the non-uniformly arranged specimens. The results of finite element analysis showed that the shear capacity of the group nails was increased with the increase of the compressive strength grade of the post-pouring material and the longitudinal spacing of the bolts, and the increase of the spacing of the bolts was more effective in improving the shear capacity of the group nails.

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“…Recent decades have witnessed the emergence of ultra-high-performance concrete (UHPC) as a promising cementitious material in buildings [1], bridges [2], and tunnels [3], etc., due to its excellent tensile and compressive strength [4], agreed post-cracking behaviors [5], and enhanced durability [6]. Extensive application of UHPC materials to fully replace normal-strength concrete (NC) would render the cost prohibitively high [7].…”

Section: Introductionmentioning

confidence: 99%

Prediction of the Interface Shear Strength between Ultra-High-Performance Concrete and Normal Concrete Using Artificial Neural Networks

Du¹,

Liu²,

Liu³

et al. 2021

Materials

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The bond strength between ultra-high-performance concrete (UHPC) and normal-strength concrete (NC) plays an important role in governing the composite specimens’ overall behaviors. Unfortunately, there are still no widely accepted formulas targeting UHPC–NC interfacial strength, either in their specifications or in research papers. To this end, this study constructs an experimental database, consisting of 563 and 338 specimens for splitting and slant shear tests, respectively. Moreover, an additional 35 specimens for “improved” slant shear tests were performed, which could circumvent concrete crushing and trigger interfacial debonding. Additionally, for the first time in our tests, the effect of casting sequence on UHPC–NC bond strength was identified. Based on the database, an artificial neural network (ANN) model is proposed with the following inputs: namely, the normal stress perpendicular to the interface, the interface roughness, and the compressive strengths of the UHPC and NC materials. Based on the ANN analyses, the explicit expression of UHPC–NC bond strength is proposed, which significantly lowers the prediction error. To be fully compatible with the specifications, the conventional shear-friction formula is modified. By splitting the total force into adhesion and friction forces, the modified formula additionally takes the casting sequence into account. Although sacrificing accuracy to some extent compared to the ANN model, the modified formula relies on a solid physical basis and its accuracy is enhanced significantly compared to the existing formulas in specifications or research papers.

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Experimental study on the seismic behavior of precast concrete column with grouted corrugated sleeves and debonded longitudinal reinforcements

Cited by 20 publications

References 21 publications

Review of experimental investigations on seismic performance of precast segmental bridge columns in seismic regions

Review of experimental investigations on seismic performance of precast segmental bridge columns in seismic regions

Investigations on the shearing performance of composite beams with group studs

Prediction of the Interface Shear Strength between Ultra-High-Performance Concrete and Normal Concrete Using Artificial Neural Networks

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