Disproportionate collapse analysis aims to assure that frames, a common structural system of buildings, can survive unforeseen local events and a central modeling tool of such abnormal deterioration is the concept of column loss. This paper formulates an appropriate computational model on the basis of mathematical optimization, using the collapse load analysis problem of steel frames with pre-e...

In developing key documents such as national building codes, regional emergency response plans, and risk management strategies, it is critical to understand the causes and effects of structural collapse. This paper presents ongoing research activities to establish a robust procedure for accurate assessment of the collapse of steel frame structures. A cohesive zone method based strategy is being...

Abstract Seismic evaluation of existing structures is based on determining the damage likely to occur during lifetime these due earthquake ground motion excitation. However, there not a consensus about acceptable level seismic damage, expected structures, and hazard level(s) evaluate at. This paper presents methodology for parametric calculation collapse risk an Reinforced Concrete (RC) frame b...

Seismic codes were developed to reduce the structural vulnerability and risk associated with earthquakes in earthquake-prone regions of world. The effectiveness code preventing damage is dependent on performance level defined construction technology employed. seismic fragility curves for two recent versions Iran are determined by using hybrid method. probability levels visualized these curves. ...

purpose: in recent years high explosive bomb attacks have been increasingly directed against   civil structures by various terrorist organizations. this paper describes a numerical method for   assessing the interaction of high explosive air blast within the complex geometrical type of a   congested urban environment.   materials and methods: the first step in predicting blast effects on a targ...

Progressive collapse of building structures is generally triggered by a local failure due to accidental actions, followed by subsequent chain effect of the structures which may result in wide range failure or even collapse of the entire buildings. Since the “911” event, progressive collapse of building structures has been widely concerned by engineers and researchers. This paper assesses the cu...

The instability even collapse of tunnel would occur during the construction in soft ground. A collapse of expressway tunnel which suddenly encountered soft ground took place just after completing the anchor bolts was investigated as the study background. Based on the plastic and damage constitutive laws, the numerical method of finite element was funded for analyzing the failure mechanism of an...

We develop one-dimensional model of an avalanche to examine the destruction of World Trade Center (WTC) 2 on September 11, 2001, after the building was hit by an airplane. Its main ingredient is the way the building opposes the progress of the avalanche, which is expressed in terms of a reaction force R at the location of the collapse front (a moving interface between the building and the avala...

On September 21, 2020, the Pasar Wage Building of Kabupaten Banyumas was hit by a fire causing spalling concrete and thus exposing steel reinforcement. This damage can affect performance safety building. For this reason, an evaluation is needed to determine post-fire structure propose necessary repair retrofitting. Investigation testing in field were carried out study as primary data for seismi...