Calculation of the resistance of an unequal span steel substructure against progressive collapse based on the component method

2019 ◽  
Vol 182 ◽  
pp. 13-28 ◽  
Author(s):  
Bao Meng ◽  
Weihui Zhong ◽  
Jiping Hao ◽  
Xiaoyan Song ◽  
Zheng Tan
Keyword(s):  
Progressive Collapse ◽  
Component Method

Protection of buildings and structures against progressive collapse within the framework of legislative and regulatory requirements

2019 ◽  
pp. 46-54 ◽  
Keyword(s):  
Progressive Collapse ◽  
Professional Community ◽  
Regulatory Requirements ◽  
Technical Regulation ◽  
Regulatory Documents ◽  
Common Position ◽  
Local Destruction

At present, the current legislative and regulatory documents do not contain a clear and unambiguous answer to the question, what buildings and structures should be designed resistant to progressive collapse. In this regard, the analysis of the legal and regulatory requirements of the need for calculations to prevent the progressive collapse of buildings and structures due to hypothetical or suspected local destruction is presented. The main legislative requirements of technical regulation in the field of ensuring the mechanical safety of buildings and structures, as well as the requirements of regulatory documents regarding the design of the protection of building and structures against progressive collapse are considered. The analysis of the fundamental principles features of the calculation for the structural protection against progressive collapse is given. Some issues discussed by the professional community in the direction of possible ways of solving the actual problems of the presented problem are considered. The conclusion is made about the need for further dialogue of the professional community on the development of a common position on the protection of buildings and structures from progressive collapse, which should be reflected in the legislative and regulatory requirements.

THE SUPPORT BONDS RIGIDITY INFLUENCES ON THE CARRYING CAPACITY REDUCTION OF THE SHALLOW SHELLS ON A RECTANGULAR PLAN

2020 ◽  
Vol 92 (6) ◽  
pp. 3-12
Author(s):  
A.G. KOLESNIKOV ◽  
Keyword(s):  
Variable Thickness ◽  
Carrying Capacity ◽  
Geometric Nonlinearity ◽  
Progressive Collapse ◽  
Geometrically Nonlinear ◽  
Loss Of Stability ◽  
Shallow Shells ◽  
Capacity Reduction ◽  
Internal Forces ◽  
Hinged Support

Geometric nonlinearity shallow shells on a square and rectangular plan with constant and variable thickness are considered. Loss of stability of a structure due to a decrease in the rigidity of one of the support (transition from fixed support to hinged support) is considered. The Bubnov-Galerkin method is used to solve differential equations of shallow geometrically nonlinear shells. The Vlasov's beam functions are used for approximating. The use of dimensionless quantities makes it possible to repeat the calculations and obtain similar dependences. The graphs are given that make it possible to assess the reduction in the critical load in the shell at each stage of reducing the rigidity of the support and to predict the further behavior of the structure. Regularities of changes in internal forces for various types of structure support are shown. Conclusions are made about the necessary design solutions to prevent the progressive collapse of the shell due to a decrease in the rigidity of one of the supports.

scholarly journals Study on progressive collapse resistance of single-layer reticulated shells

2021 ◽  
Vol 1777 (1) ◽  
pp. 012037
Author(s):  
R Han ◽  
T Y Yin ◽  
X D Yang ◽  
Y Zhang ◽  
Y S Zhang ◽  
...  
Keyword(s):  
Progressive Collapse ◽  
Single Layer ◽  
Collapse Resistance
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