Demountable shear wall with rocking boundary columns for precast concrete buildings in high seismic regions

Naserpour, Afshin; Fathi, Mojtaba; Dhakal, Rajesh

doi:10.1016/j.istruc.2022.05.083

Cited by 11 publications

(6 citation statements)

References 41 publications

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“…12, the width of individual cracks reached 3 mm. The documentation did not reveal subhorizontal cracks oriented towards the upstream or downstream, which increased the strength characteristics of the massif in the shear direction [5,7,11,12].…”

Section: Introductionmentioning

confidence: 87%

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Strength investigations of foundation of allocation of main structures of Pskem hydropower station on Pskem river

Inom,

Komil,

Masharif

et al. 2023

E3S Web of Conf.

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Section: Introductionmentioning

confidence: 87%

“…Bedding cracks in the thickness of the Neogene deposits are not found everywhere and are fixed mainly during a sharp change in the lithological composition of the rocks [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Strength investigations of foundation of allocation of main structures of Pskem hydropower station on Pskem river

Inom,

Komil,

Masharif

et al. 2023

E3S Web of Conf.

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“…Bolted connection installations and mounting tolerances should adhere to technical specifications for high-strength bolt connections in steel structures. Naserpour et al [46] employed steel plates and bolts in order to connect precast wall panels, as shown in Figure 28. Frames were incorporated into the system to improve its mechanical strength and durability.…”

Section: Wall-panel Connectionsmentioning

confidence: 99%

A Review on Mechanical and Structural Performances of Precast Concrete Buildings

Chang

Zhang

2023

Buildings

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In recent decades, precast concrete buildings have undergone significant development, attracting considerable academic attention to their mechanical performances. Unlike cast-in-situ buildings, precast buildings are assembled on site by connecting precast components using mechanical devices or on-site casted joints, which makes the connections particularly important for overall structural performances. This study presents a comprehensive review of the mechanical performances of precast buildings, with a specific focus on various types of connections and their structural properties. This study reviews the mechanical performances of building connections using dry, wet, and/or hybrid methods between pre-manufactured components, e.g., beam–column joints, wall–panel connections, and column/wall–foundation connections. Both experimental and numerical investigations are reviewed. The paper provides a valuable reference regarding the mechanical performances of precast concrete buildings.

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“…As is well known, seismic resistance [1] is one of the most important indicators for judging the safety of tunnels. Generally, the geological structure of coal mine tunnel is complex.…”

Section: Introductionmentioning

confidence: 99%

Seismic performance of soft rock tunnel under composite support conditions

Wu,

2024

J. vibroeng.

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In order to effectively improve the seismic and impact resistance performance of soft rock tunnels, a composite support method was proposed and validated in the paper. The UDEC (Universal Distinct Element Code) model of soft rock layers was established, and the movement and subsidence characteristics of the roof and floor of the rock layers under impact loads was simulated and calculated. As a result, a composite support scheme with good cushioning performance was proposed. The top and sides of the tunnel were supported by a combination of anchor rods of different lengths and metal mesh, reinforced by steel beams and vibration absorbing filler around. The anchor rod was designed as a segmented loading structure, and can be set to different preloading forces based on the internal deformation of the rock layer. The dynamic response testing scheme was designed, and the results indicate that the segmented loading anchor rod has a significant buffering effect on the response to impact load, and can provide reasonable tension feedback at different stages. Research has found that when the water cement ratio is 0.5-1.5, the curing efficiency and strength are both higher. In order to compare the seismic performance of composite support and traditional constant resistance anchor rod support, local blasting experiments were conducted. Based on a blasting vibration tester, a data detection and transmission system were designed to obtain the vibration speed of the tunnel roof during the vibration process. The research results show that composite support can reduce the maximum vibration by more than 40 %, stabilize the fragmentation coefficient at 1.38, and have a very significant vibration reduction effect.

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Demountable shear wall with rocking boundary columns for precast concrete buildings in high seismic regions

Cited by 11 publications

References 41 publications

Strength investigations of foundation of allocation of main structures of Pskem hydropower station on Pskem river

Strength investigations of foundation of allocation of main structures of Pskem hydropower station on Pskem river

A Review on Mechanical and Structural Performances of Precast Concrete Buildings

Seismic performance of soft rock tunnel under composite support conditions

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