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A glass window under blast loading
Structural Vulnerability Assessment: Blast Analysis -Example Glass Window Blast
A glass window under blast loading
A structure collpases under blast loading.
Structural Vulnerability Assessment: Blast Analysis -Example Building Blast
A structure collpases under blast loading.
In this example a reinforced column is subjected to blast loading.
Structural Vulnerability Assessment: Blast Analysis - Example Column Blast
In this example a reinforced column is subjected to blast loading.

Blast Analysis

Recent historic events have proven that it is vital to understand how structures behave and respond to blast attacks.  Many different tools have been developed using extensive data libraries to help identify the means of reducing and/or mitigating the dangers resulting from bomb attacks. Although these tools have been a great help in saving lives and protecting important structures, they are limited in scope and cannot create an accurate visualization of the true damage occurring to the structure or the effects of the resulting debris.

ASI uses its unique Extreme Loading® Technology (ELT) to analyze the behavior of structures subjected to blast loading. ELT is based on the Applied Element Method (AEM) which allows ASI to track and analyze structural behavior from its elastic stage to cracking, element separation and collision.
 
Blast Analysis Services Include:

  • Estimation of blast loading on a specific structure based on the threat scenario provided by the client.
  • Modeling and 3D simulation of structural and non-structural components behavior due to blast loads.
  • Assessment of structural vulnerability to blast loads.
  • Reactive glass analysis due to blast loads.
  • Blast loads can be automatically generated using the UFC 3-340-02 or by custom generated pressure-time history.
  • Assessment of debris and/or glass fragment velocity and dispersion.
  • Determination of risk zones and stand-off distances.
  • Recommendations for structure redesign, so as to resist provided blast loads and potential for progressive collapse.

Fairwinds Blast Vulnerability Assessment

Fairwinds Tower will be 48 stories, 800 feet tall with 1.5 million square feet of space and a price tag of approximately $880 million upon completion in 2009. The building consists of a high-rise tower and a podium. It was announced that it would become the official headquarters building for an international bank.

In the light of post 9-11 building code requirements, the overall vulnerability of the structure had to be assessed to determine its safety relevant to both man-made and natural hazards. Security Management Consultants reviewed the possible threat scenarios to the structure and determined that an explosives-laden vehicle could pose a credible a risk.

Applied Science International (ASI) was tasked with assessing the structure’s vulnerability in several scenarios including different positions for the blast location inside and outside the building and differing weights for the explosive charge, while taking into consideration vertical loads inherent in the structure.

Fairwinds Blast Vulnerability Assessment