Experimental study on shear behavior of two‐way hollow core precast panel shear wall with vertical connection

Chu, Mingjin; Chen, Xiong; Liu, Jiliang; Sun, Zhijuan

doi:10.1002/tal.1814

Cited by 10 publications

(5 citation statements)

References 30 publications

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“…With an increase in the axial compression ratio, the yield and peak loads of the shear wall gradually increased, while the displacement ductility coefficient decreased. However, when the axial compression ratio was 0.30, the displacement ductility coefficient was 3.77, which indicated good deformability, which was also confirmed by the research conducted by Chu et al [16,17].…”

Section: Bearing Capacity and Ductilitysupporting

confidence: 68%

“…The hysteretic energy dissipation of a two-way hollow slab shear wall was approximately seven times that of a cast-in-place shear wall. The difficulties focus on the penetrating horizontal distribution rebars into the joint holes and the quality control of the caste-in-place concrete in the horizontal holes [15][16][17]. In this aspect, a prefabricated shear wall with mortise-tenon joints was proposed, and the results showed that the yield and the peak loads gradually increased with an increase in the axial compression ratio.…”

Section: Introductionmentioning

confidence: 99%

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Seismic Behaviors of Prefabricated Reinforced Concrete Shear Walls Assembled with a Cast-in-Place Vertical Joint

Yang,

Deng

et al. 2023

Buildings

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The seismic performance of prefabricated reinforced concrete shear walls is a key point in the safety of the whole assembly structure under earthquake actions. In this study, six specimens of reinforced concrete shear walls were assembled with a cast-in-place vertical joint with a straight, L, or convex shape. The specimens were tested using a low cyclic loading test under an axial compression ratio of 0.2 or 0.3. The stress process, failure pattern, and hysteretic curve of each specimen were measured. Combined with a numerical analysis using the finite element method, the variations in the bearing capacity, stiffness degradation, ductility, and energy dissipation capacity of the tested specimens were analyzed. Results showed that all specimens failed in a shear pattern without an obvious failure phenomenon along the vertical joint. The hysteresis curves exhibited an obvious pinch phenomenon and good deformation ability. The seismic behavior decreased in sequence for the shear walls assembled with a cast-in-place vertical joint with a straight, L, or convex shape, while a higher axial compression ratio improved the bearing capacity of the shear walls. The shear wall with an L-shaped vertical joint had similar seismic behavior to that with a straight vertical joint, but the shear wall with a convex vertical joint exhibited a decrease of 8.5% and 10.9% in bearing capacity, 18.2% and 1.2% in ductility, and 13.1% and 20.6% in energy dissipation, respectively, under an axial compression ratio of 0.2 and 0.3. The bearing mechanisms of shear walls with different vertical joints are explained with the numerical analysis of the stress vector maps of concrete and the stress cloud maps of reinforcements at different stress levels.

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Section: Bearing Capacity and Ductilitysupporting

confidence: 68%

Section: Introductionmentioning

confidence: 99%

Seismic Behaviors of Prefabricated Reinforced Concrete Shear Walls Assembled with a Cast-in-Place Vertical Joint

Yang,

Deng

et al. 2023

Buildings

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“…However, the current application of the type of structure is limited, leaving a marginal improvement in its design of vertical joints. Xiong et al 6,19,20 investigated the shear behavior of PRCHW with circular vertical and horizontal reserved holes filled with post-pouring concrete, which indicated that the PRCHW had similar shear capacity as CIP walls but significantly better ductility. However, this type of joint design may cause material waste because the reinforcement in the main wall was not utilized as load resistance.…”

Section: Introductionmentioning

confidence: 99%

Seismic performance and parametric study of precast reinforced concrete Shear Wall structure with indirect‐lapping joints

Wang,

Zhao,

et al. 2024

Structural Concrete

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Precast reinforced concrete (RC) shear wall structures (PRCSWS) are widely adopted by high‐rise buildings owing to their attractive advantages such as high construction quality and seismic resistance. A novel vertical joint for PRCSWS was proposed, featured by the indirect lap between connection cages and vertical distributed bars of the wall panel. The feasibility of this joint was verified by pseudo‐static experiments on precast shear wall specimens with different joint designs and a referential cast‐in‐place (CIP) specimen. To gain more insights into the failure mechanism of the PRCSWS with different joint designs, non‐linear finite element (FE) models were established and analyzed for the numerical study. The simulation showed good agreement with the experimental result regarding the load‐drift curves, cracking patterns, and failure modes, exhibiting a flexural‐shear failure with corner concrete crushing. The investigation into the failure patterns of four specimens indicated that anchorage deterioration of interfaces inside the joints was induced by cyclic tension, leading to both reductions in ductility and energy dissipation. This effect was more obvious when the connection cages (a design parameter) were less and more concentrated. The parametric study revealed that increasing the anchorage length of connection cage in wall panel and additional confinement reinforcements surrounding the reserved ducts could reduce the relative slip on the interfaces and enhance the anchorage of connection cages, which could further improve the seismic performance of PRCSWS.

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“…However, if the core of such is filled, it can also be used as a load-bearing wall [19]. Many scholars [20][21][22][23] have conducted relevant research in this regard and have found that although hollow-core RC walls have good ductility and energy dissipation capacities, the bearing capacity of these wall panels in seismic activity and compression is poor.…”

Section: Introductionmentioning

confidence: 99%

Simplified Analytical Methods for Prefabricated Concrete Wall Panel Building System with Alveolar-Type Joints

et al. 2023

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This paper presents a type of prefabricated concrete wall panel building system with novel flexible alveolar-type joints, which has the advantages of fast assembly and controllable quality. Seven alveolar-type joint specimens were designed and fabricated to investigate the influence of the axial compression ratio, the size of the joint (in the interface contact area), and the strength of the mortar on the joints’ performance. The shear–slip constitutive model of the alveolar-type joints was established on this basis. The accuracy of the constitutive model was verified by comparing two full-scale loading tests with the exact finite element analysis model of ABAQUS. A finite element model of a multi-story apartment building was established by using the aforementioned shear–slip constitutive model; thus, the simplified analysis method for the prefabricated concrete wall panel building structure with alveolar-type joints was proposed. It was concluded that increasing the axial compression ratio, mortar strength, and size of the joints could increase the shear-bearing capacity by different degrees and that the 50 mm depth joint could increase the capacity by 18.6%. The proposed shear–slip constitutive model simulated the interface mechanism well by comparing the test results. Furthermore, the simplified analytical methods of the integral structure were in good agreement with the FEA results.

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Experimental study on shear behavior of two‐way hollow core precast panel shear wall with vertical connection

Cited by 10 publications

References 30 publications

Seismic Behaviors of Prefabricated Reinforced Concrete Shear Walls Assembled with a Cast-in-Place Vertical Joint

Seismic Behaviors of Prefabricated Reinforced Concrete Shear Walls Assembled with a Cast-in-Place Vertical Joint

Seismic performance and parametric study of precast reinforced concrete Shear Wall structure with indirect‐lapping joints

Simplified Analytical Methods for Prefabricated Concrete Wall Panel Building System with Alveolar-Type Joints

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