UdonThani The Structural Resilience of Concrete-Filled Hollow Section Buildings in Earthquake Scenarios

tle: Structural Resilience of Concrete-Filled Hollow Section Buildings in Earthquake Scenarios，Abstract: This study examines the structural resilience of concrete-filled hollow section buildings under earthquake scenarios. The research methodology involves experimental testing and numerical simulations to assess the performance of these buildings during seismic events. Results indicate that the use of concrete-filled hollow sections can enhance the overall structural strength and stability of buildings, particularly in areas prone to frequent earthquakes. The findings suggest that this innovative design approach can be effectively implemented in earthquake-prone regions to improve the safety and resilience

In the face of natural disasters such as earthquakes, the structural integrity of buildings is a critical factor in determining their ability to withstand and mitigate the impact. Among various building types, concrete-filled hollow section (CFHS) buildings have gained attention due to their innovative design that combines the strength of steel reinforcement with the energy-efficient properties of lightweight concrete. This paper aims to explore the resilience of CFHS buildings against earthquakes by examining their structural characteristics, material properties, and design features.

Structural Characteristics:

The CFHS structure is characterized by its hollow core, which provides additional stiffness and strength to the building while reducing its weight. This structural feature allows for efficient use of materials and minimizes the overall mass of the building, making it more responsive to seismic forces. However, the effectiveness of this design also depends on the quality and quantity of the steel reinforcement used within the concrete walls.

Material Properties:

Concrete-filled hollow sections are made from high-strength concrete mixed with steel fibers or steel meshes. These materials offer enhanced resistance to compression, flexure, and shear compared to conventional concrete structures. Steel fibers or meshes provide additional tensile strength and stiffness to the concrete, enhancing its ability to resist tension and bending loads. Additionally, the use of steel in the concrete matrix helps to improve the overall durability and longevity of the building.

Design Features:

The design of CFHS buildings incorporates several features that enhance their earthquake resistance capabilities. For instance, the use of braced frames, diaphragms, and beam-to-column connections ensures that the building remains stable during an earthquake. The braced frames provide additional support to the building's perimeter, while the diaphragm acts as a horizontal force transferring mechanism between the floor and the foundation. The beam-to-column connections ensure that the building can withstand both vertical and horizontal forces without collapse.

Energy Dissipation Mechanisms:

UdonThani One of the key advantages of CFHS buildings is their ability to dissipate seismic energy through various mechanisms. These include the use of dampers, which absorb energy from the building during an earthquake and release it gradually over time. Dampers can be either viscoelastic or viscous, depending on their material composition and design. Additionally, the use of energy-absorbing devices such as braces and tiebacks can help to distribute seismic forces more evenly throughout the building.

UdonThani Conclusion:

UdonThani In conclusion, concrete-filled hollow section buildings exhibit significant structural resilience against earthquakes due to their innovative design features, material properties, and energy dissipation mechanisms. By leveraging the strength of steel reinforcement and lightweight concrete, these buildings can withstand the impact of earthquakes while minimizing their overall mass and increasing their flexibility. As such, they represent a promising solution for earthquake-prone regions where traditional building

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