Experimental study on seismic performance of shear wall with precast concrete hollow molds

Zhang, Xin; Wang, Yan; Lu, Zheng; Yuan, Yong

doi:10.1002/suco.202000477

Cited by 14 publications

(12 citation statements)

References 30 publications

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“…In summary, the USC of the CCSSW can be obtained according to Equation (15). Since the parameters of two coupled walls are the same in this paper, the resistance bending moment of the coupled wall itself is M 1 = M 2 , as shown in Equation (18). To verify the correctness of the formula, referring to the calculation data of some models calculated in Section 3, the calculation section is the bottom surface of the coupled wall, so in Equations ( 11) and ( 12), u = 0 and V 1 = V 0 .…”

Section: Validation Of the Theoretical Methodsmentioning

confidence: 95%

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Seismic behavior and shear capacity prediction of coupled concrete‐filled multicellular steel tube composite shear walls

Zheng,

Mi,

Cai

et al. 2024

Structural Concrete

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In this paper, a coupled concrete‐filled multicellular steel tube composite shear walls structure (CCSSW) is proposed. A finite element model (FEM) is developed to investigate the seismic behavior of CCSSW, and the model was validated by the tests. The effects of four parameters including axial compression ratio (ACR) on the hysteretic behavior of the CCSSW were studied. Then, a theoretical model for predicting the ultimate shear capacity (USC) of CCSSW was established. The results show that the failure mode of coupled walls exchanged from flexural failure to flexural‐shear failure with increasing the ACR, and it is recommended that the ACR should less than 0.6 to ensure the ductility requirement. To better realize the function of the first line of defense of steel coupling beam (SCB), following recommendations are concluded: the span‐to‐depth ratio range of SCB is 4.0–6.0, the wall stiffness ratio is 2.4–4.7, and low yield strength material should be used for SCB. The maximum error on USC between FEM results and theoretical results is 12.8%, and most of them are less than 10%, indicating the effectiveness of the proposed theoretical model.

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Section: Validation Of the Theoretical Methodsmentioning

confidence: 95%

“…Zheng et al, 10 Ghodratian-Kashan et al, 11 Qiu et al, 12 Emami et al, 13 and Tong et al, 14,15 studied the hysteretic behavior of corrugated steel plate shear wall. Li et al, 16,17 Zhang et al, 18 and Sun et al 19 studied the mechanical properties of precast concrete shear walls under lateral loads.…”

Section: Introductionmentioning

confidence: 99%

Seismic behavior and shear capacity prediction of coupled concrete‐filled multicellular steel tube composite shear walls

Zheng,

Mi,

Cai

et al. 2024

Structural Concrete

View full text Add to dashboard Cite

show abstract

“…Zhang found that when the interface shear strength is greater than the shear stress and the interface tensile strength exceeds the radial tensile stress, a superimposed structure is formed. Otherwise, a composite structure is formed [15]. Therefore, in addition to testing the compressive strength and flexural strength of mortar materials, it is also necessary to study the splitting tensile strength and shear strength of the interface between mortar and concrete.…”

Section: In Situ Spraying Mortar Materials Performance Experimentsmentioning

confidence: 99%

Experimental Investigations of a Tunnel Lining Segment Strengthened by In Situ Spraying Mortar

Wang

Zeng

et al. 2022

Applied Sciences

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After long-term operation, tunnel lining segments encounter various problems. Aiming at these problems, in this paper, we present a method of strengthening tunnel lining segments by in situ spraying mortar. An experimental study of the in situ spraying mortar was carried out to determine the compressive strength, flexural strength and interface properties (splitting tensile strength and shear strength) between concrete and H-70 mortar. The experimental results show that the mechanical properties of H-70 mortar are less dependent on the curing humidity than ordinary concrete under standard curing conditions, the 7-day compressive strength of H-70 is 55 MPa, which is 61% of the 28-day compressive strength. This shows that H-70 has high early strength and is very suitable for rapid reinforcement. The interface roughness has a significant effect on the splitting tensile strength, and it can be increased by chiseling to improve the bearing capacity of the strengthened structure. A full-scale loading experiment was carried out on the segment strengthened by in situ spraying mortar. The loading process, failure mode and ultimate bearing capacity of the strengthened structure were analyzed by full-scale loading experiment. The research shows that the ultimate bearing capacity of the tunnel segment strengthened by in situ spraying mortar increased significantly. The ultimate bearing capacity of the strengthened structure is 10% higher than that of the unstrengthened structure. The advantages and disadvantages of in the situ spraying-mortar strengthening method are analyzed in comparison with the internal-tension steel-ring strengthening method.

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“…Zhang determined that when the coordinated deformation of the existing pipeline lining depends on the relationship between the load on the interface and the interface resistance, and if the resistance is greater than the load, the two form a superimposed composite structure. An indoor test of the composite structure model indicated that the bearing capacity of the upper and lower beams could not be fully exerted due to the gap caused by the shrinkage of the mortar layer, which was approximately 0.6-0.9 times the theoretical value [6]. WRC studied the influence of the modulus of the mortar layer on the bearing capacity of the repaired pipeline.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Bearing Capacity of Reinforced Concrete Pipes with Corrosion-Thinning Defects Repaired by UHP-ECC Mortar Spraying

Zhang

Gong

et al. 2023

Applied Sciences

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The in situ spraying method is widely used because of its advantages as a trenchless pipeline repair technology, including a fast construction speed and close bonding between the repair lining layer and the reinforced concrete pipe. However, current research on high-performance spray repair materials, the bearing capacity of pipelines before and after repair, and the failure modes between the two interfaces after repair is insufficient. Through laboratory tests designed with multiple sets of control tests, this paper outlines the bearing capacity of reinforced concrete pipelines with corrosion thinning defects repaired with ultra-high-performance concrete. The variation law of the residual bearing capacity of reinforced concrete pipes and the influence of different corrosion degrees, repair thicknesses, and interface forms on the bearing capacity of reinforced concrete pipes were studied following UHP-ECC for pipe repair. The results showed that the bearing capacity of the structure decreased with an increase in the corrosion thickness of the pipeline. After repair with ultra-high-performance concrete, the bearing capacity of corroded pipelines greatly improved. When the corrosion and repair thicknesses were the same, the bearing capacity of the repaired pipeline with different interface forms was very different. After the interface was implanted with nails, spray repair was carried out and the bearing capacity of the pipeline improved the most, followed by the naturally bonded interface. When plastic film was pasted on the repair interface, the bearing capacity of the pipeline improved the least.

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Experimental study on seismic performance of shear wall with precast concrete hollow molds

Cited by 14 publications

References 30 publications

Seismic behavior and shear capacity prediction of coupled concrete‐filled multicellular steel tube composite shear walls

Seismic behavior and shear capacity prediction of coupled concrete‐filled multicellular steel tube composite shear walls

Experimental Investigations of a Tunnel Lining Segment Strengthened by In Situ Spraying Mortar

Experimental Study on the Bearing Capacity of Reinforced Concrete Pipes with Corrosion-Thinning Defects Repaired by UHP-ECC Mortar Spraying

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