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Related Concept Videos

Design of Columns under an Eccentric Load01:21

Design of Columns under an Eccentric Load

Designing columns to withstand eccentric loads is a critical aspect of structural engineering, ensuring structures can support off-center loads without failure. This design process must account for the additional normal stresses introduced by eccentric loading, which can significantly influence a column's stress distribution and overall stability. An eccentric load applied to a column induces normal stresses that can be conceptualized as a combination of stresses due to an equivalent centric...
Design of Columns under a Centric Load01:17

Design of Columns under a Centric Load

The design of columns under centric load is a fundamental aspect of structural engineering and is critical for ensuring the stability and integrity of structures. Euler's and Secant's formulas are central to understanding and calculating the critical load and deformation behaviors of columns, providing a basis for safe and effective structural design.
Euler's formula is applicable under the assumption that the column is a perfect, straight, homogenous prism, and it is operating within the...
Eccentric Axial Loading in a Plane of Symmetry01:16

Eccentric Axial Loading in a Plane of Symmetry

Eccentric axial loading occurs when an axial load is applied away from the centroidal axis of a structural member. This scenario is common in engineering, where structural elements may not be directly aligned due to various design or functional requirements.
Behavior of Concrete Under Compressive Load01:23

Behavior of Concrete Under Compressive Load

Concrete exhibits specific behaviors under different compressive loads. Understanding this is crucial for understanding its structural integrity. When concrete undergoes uniaxial compression, it tends to develop cracks that run parallel to the direction of the force. These parallel cracks stem from localized tensile stresses that occur perpendicular to the compression direction. Additionally, angled cracks may appear due to the formation of shear planes.
As the concrete specimen fractures under...
Eccentric Loading01:16

Eccentric Loading

Eccentric loading is a crucial concept in the study of structural engineering and mechanics, particularly when analyzing the stability and stress distribution in columns. Unlike centric loading, where the force is applied along the centroidal axis, causing uniform compression, eccentric loading occurs when a force is applied off-center. This off-center application introduces not only direct compressive stress but also bending stress, significantly influencing the column's behavior under load.
General Case of Eccentric Axial Loading01:12

General Case of Eccentric Axial Loading

Unsymmetrical bending occurs when the bending moment applied to a structural member does not align with its principal axis. This misalignment leads to complex stress distributions and deflection patterns that differ from symmetrical bending, which are essential for designing structures to withstand different loading conditions.
Consider a member subjected to equal and opposite forces that are applied along a line that does not coincide with the member's neutral axis. In unsymmetrical bending,...

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Finite Element Modeling for the Simulation of the Quasi-Static Compression of Corrugated Tapered Tubes
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Finite Element Modeling for the Simulation of the Quasi-Static Compression of Corrugated Tapered Tubes

Published on: January 6, 2023

Research on the Axial Compression Performance of Double C-Section Partially Encased Composite Columns.

Ming Zhou1, Linglin Qin1, Xiaodong Wen1

  • 1School of Architecture and Transportation Engineering, Ningbo University of Technology, Ningbo 315211, China.

Materials (Basel, Switzerland)
|May 27, 2026
PubMed
Summary
This summary is machine-generated.

This study tested double C-section partially encased composite (DCPEC) columns under axial compression. Results show increased steel wall thickness enhances load capacity, while higher slenderness ratios reduce it, indicating DCPEC columns

Keywords:
axial compression testcold-formed thin-walled steelcomposite columnfinite element analysislightweight aggregate concrete

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Preparation of Aligned Steel Fiber Reinforced Cementitious Composite and Its Flexural Behavior
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Preparation of Aligned Steel Fiber Reinforced Cementitious Composite and Its Flexural Behavior

Published on: June 27, 2018

Area of Science:

  • Structural Engineering
  • Materials Science

Background:

  • Composite columns offer enhanced structural performance.
  • Cold-formed thin-walled steel and concrete composites are gaining traction in construction.
  • Understanding the axial compressive behavior of novel composite sections is crucial for efficient design.

Purpose of the Study:

  • To investigate the axial compressive behavior of double C-section partially encased composite (DCPEC) columns.
  • To evaluate the influence of key parameters on the performance of DCPEC columns.
  • To validate a finite element model for predicting DCPEC column behavior.

Main Methods:

  • Experimental testing of 10 DCPEC specimens and 2 bare steel C-section specimens under axial compression.
  • Parametric study including steel wall thickness, slenderness ratio, and connection type.
  • Development and validation of a finite element model using ABAQUS.

Main Results:

  • Bolted stub columns showed an 8.4% higher ultimate load than welded ones.
  • Increasing steel wall thickness from 2.0 mm to 3.0 mm increased the ultimate load by approximately 16%.
  • Increasing the slenderness ratio from 25.98 to 41.57 decreased the ultimate load by approximately 30%.

Conclusions:

  • DCPEC columns effectively utilize composite action between steel and concrete.
  • Steel wall thickness positively impacts axial load-carrying capacity.
  • Slenderness ratio negatively affects axial resistance, highlighting its importance in design.