Explosive loading of multi storey RC buildings: Dynamic response and progressive collapse

The RC buildings' construction has increased in the preferred location of north & eastern hilly areas during the last few decades due to population increase, urbanization, and tourists. The buildings located in the hilly areas are more susceptible to seismic loading as compared to the location of the flat surface building. The shape of the building on the sloping ground differs from the flat surface situated buildings. So, the construction of the building on hilly areas are irregular both vertically & horizontally, thus this type of building is susceptible to severe damage when applied to the seismic condition. The column of the base storey having unequal height due to sloping ground. In this study, the behaviour of a 10 storey stepback building with mass and diaphragm irregularity on the sloping ground is analysed in seismic zone V by Response Spectrum. The analysis of the building is carried out by Etabs software as per IS 1893:2016 to compare the building based on their dynamic response and also identify the vulnerability frame in the sloping ground.

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Dynamic Response of RC Column with Different Constraints under Blast Load

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.243-249.860 ◽

2011 ◽

Vol 243-249 ◽

pp. 860-864

Author(s):

Yan Li Hou ◽

Yu Feng Jiao ◽

Xue Ying Wei

Keyword(s):

Dynamic Response ◽

Lateral Displacement ◽

Progressive Collapse ◽

Damage Model ◽

Three Dimensional ◽

Maximum Pressure ◽

Finite Element Program ◽

Scaled Distance ◽

Rc Column ◽

Fixed End

The failure of the reinforced concrete (RC) column on the ground floor may result in progressive collapse of the whole building. In the paper, the finite element program LS-DYNA is used to simulate the dynamic response of RC column with different constraints subjected to blast pressure. A three dimensional solid model is established for the RC column. A brittle damage model is applied to simulate the concrete. The lateral displacement and failure mode of RC column with different scaled distances are investigated and discussed. It can be found that the pressure nephogram and x-direction displacement of fixed end column under different scaled distance have the obvious symmetry. Moreover, both the maximum pressure and x-direction displacement of one end fixed and one end simply supported column are bigger than fixed end column with the same scaled distance.

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Collapse Distribution Scenario in Seismic Progressive Collapse of RC Buildings Caused by Internal Column Elimination

Iranian Journal of Science and Technology Transactions of Civil Engineering ◽

10.1007/s40996-020-00351-7 ◽

2020 ◽

Vol 44 (S1) ◽

pp. 241-252

Author(s):

Somayyeh Karimiyan

Keyword(s):

Progressive Collapse ◽

Rc Buildings

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Dynamic Response on Stiffened Plate Subjected to Air Explosive Loading

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.486.183 ◽

2011 ◽

Vol 486 ◽

pp. 183-186 ◽

Cited By ~ 1

Author(s):

Jian He ◽

Ben Yang Wang ◽

Ming Wei Zhu ◽

Hui Zhao Sun

Keyword(s):

Dynamic Response ◽

Orthotropic Plate ◽

Explosive Loading ◽

Motion Equation ◽

Stiffened Plate ◽

Structure Form ◽

Maximum Deformation ◽

Lagrange’S Equation ◽

Common Structure ◽

Plate And Shell

Stiffened plate is a common structure form in plate and shell structure. There are important theoretical significance and project application value on studying dynamic response of stiffened plate subjected to air explosive loading. The motion equation of orthotropic plate which subjected to explosive loading is established adopting Lagrange’s equation of motion, and the stiffened plate where the stiffener is arranged uniformly is treated as textural orthotropic plate. Then the motion equation of the orthotropic plate is converted into motion equation of the stiffened plate. Therefore the maximum deformation of stiffened plate can be determined.

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