A Methodology for Structural Damage Detection Adding Masses

di Marzo, Marco; Tomassi, Andrea; Placidi, Luca

doi:10.1080/09349847.2024.2336938

Cited by 6 publications

(2 citation statements)

References 43 publications

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“…Moreover, soil-structure interaction (SSI) is influenced by the flexibility of the soil below the foundation and the relative vibrations between the foundation and the free surface. By accounting for these effects, it is possible to determine the inertial forces and actual displacements of a structure under seismic ground motion or quasi-dynamic loads [3].…”

Section: Introductionmentioning

confidence: 99%

Role of the Subgrade Reaction Modulus in the Design of Foundations for Adjacent Buildings

Khosravifardshirazi,

Tavana,

Javadi

et al. 2024

Buildings

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This paper examines the effects of soil–structure and structure–soil–structure interactions in the design of foundations for adjacent concrete buildings, which are located on soft soils. The study employs an elasto-plastic model through static (quasi-dynamic) analysis using the direct finite element method by applying earthquake loads in one time step. Two concrete buildings, one with 6 stories and another with 12 stories, were modelled and numerically analysed using ANSYS. The foundations of these two buildings were analysed separately and compared when they were assumed to be adjacent to each other. The designs of the buildings’ foundations were evaluated independently and in comparison with each other to determine the impact of these interactions. The results indicated that accounting for the effects of both interactions increases the total deformation of the foundations. Additionally, the study found that adjusting the subgrade reaction modulus values (Ks) for different sections of the foundation can be a practical method to address both interaction effects simultaneously. This method also optimizes the weight of reinforcement material (Wr) by reducing it by 15% and modifying the positions and quantities of reinforcements used and considering various subgrade reaction modulus values in foundation design.

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Section: Introductionmentioning

confidence: 99%

Role of the Subgrade Reaction Modulus in the Design of Foundations for Adjacent Buildings

Khosravifardshirazi,

Tavana,

Javadi

et al. 2024

Buildings

View full text Add to dashboard Cite

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“…Earthquakes are one of the most common natural disasters on Earth and are extremely destructive. Earthquakes cause seismic waves to propagate through the Earth's crust, with numerous effects on its soil and foundations, such as seismic wave amplification, earthquake-induced liquefaction, and effects on infrastructure, which have been modeled in various studies [1]. Earthquakes propagate seismic waves in soil, and different types and layers of soil have different effects on the propagation and response of seismic waves.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Dynamic Behavior of Multi-Layered Soil Grounds

Jin,

Jeong,

Moon

et al. 2024

Applied Sciences

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The ground consists of many layers of soil with different properties. The propagation speed and path of seismic waves are affected by different soil layers. It is necessary to understand that layered soil exhibits different dynamic behaviors and responses under the action of seismic waves. This study utilized weathered soil and silica sand as materials to create multi-layered soil conditions with varying degrees of compaction. By conducting a 1 g shaking-table test on multi-layered soil, the interactions and influences between different soil layers under different earthquake conditions were observed. The approach of our numerical analysis aimed to complement the experimental results and provide an in-depth understanding of the dynamic behavior of multi-layered soil surfaces during seismic events. The acceleration results achieved with the ABAQUS and DEEPSOIL models for multi-layered soil were in good agreement with the experimental results. By comparing the stress–strain curves, the deformation mechanisms under different constitutive models in the numerical analysis were studied. The results of this study show that the amplification effect of seismic waves is related to the number of soil layers and the degree of compaction of the soil layers. This indicates that multi-layered soil ground and the behavior of the soil layers play an important role in the propagation and impact of seismic waves, and this amplification effect is of great significance in the design of actual seismic disaster risk assessments.

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Study of a New Type of Large-Diameter Multi-Disc Soil Anchor and Its Bearing Characteristics and Creep Property

Wang,

Xia,

Hua

2024

Applied Sciences

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This paper presents a new type of large-diameter multi-disc soil anchor and its cavity-forming tool. The large-diameter multi-disc soil anchor is obtained by adopting a toothed chain, centrifuging holes to form cavities, forming multiple cavities, placing a steel strand with centering support, injecting cement mortar, and curing. In order to study the uplift bearing characteristics and creep property of the large-diameter multi-plate soil anchor, the equal-diameter soil anchor was taken as the control group. The ultimate pull-out bearing capacity, vertical displacement, axial force, anchor plate bearing load, and side friction resistance were simulated and analyzed by FLAC3D 5.0 64-bit software, and the creep property test of the anchor bolt was carried out. The results show that under the same conditions, the ultimate pulling capacity of the large-diameter multi-disc soil anchor is 125% higher than that of the same-diameter soil anchor. The vertical displacement of the large-diameter multi-disc soil anchor decreases by 51.74% compared with that of the equal-diameter soil anchor when the ultimate uplift capacity is reached. The side friction resistance of the large-diameter multi-disc soil anchor is small and its growth rate is slow. When the ultimate pulling capacity is reached, the load sharing of the anchor disc accounts for 76.54% of the total load applied. The creep rate of the large-diameter multi-plate soil anchor bolt is 0.91 mm, and the creep rate of the equal-diameter soil anchor bolt is 1.69 mm. By fitting the data, it is found that the large-diameter multi-disc soil anchor provides a method to increase the anchorage force of the soil anchor, and the research on its bearing characteristics and creep property provides a theoretical basis for the application of the soil anchor.

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A Methodology for Structural Damage Detection Adding Masses

Cited by 6 publications

References 43 publications

Role of the Subgrade Reaction Modulus in the Design of Foundations for Adjacent Buildings

Role of the Subgrade Reaction Modulus in the Design of Foundations for Adjacent Buildings

Analysis of the Dynamic Behavior of Multi-Layered Soil Grounds

Study of a New Type of Large-Diameter Multi-Disc Soil Anchor and Its Bearing Characteristics and Creep Property

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