WSEAS Transactions on Applied and Theoretical Mechanics
Print ISSN: 1991-8747, E-ISSN: 2224-3429
Volume 9, 2014
The Calculated Justification of Seismic Stability of Load-Lifting Cranes
Authors: , ,
Abstract: To provide seismic safety for engineering structures remains a prevalent problem. In particular, attention is given to facilities whose destruction can cause damage to the population and the environment, such as the facilities that use nuclear energy. According to the maps of the general seismic regionalization OSR-97, independent spent fuel storage installation (ISFSI) with crane loadings of mining and chemical plant (MCP) (Zheleznogorsk, Krasnoyarsk Territory, Russian Federation) was related to 7 magnitude zones according to the MSK-64 scale. To justify the seismic safety using FEA, a dynamic spatial model of the MCP’s building was developed, which includes bridge cranes with lifting capacities of 160/32 t, 16/3.2 t and 15 t. The model was used for the floor accelerogram plotting at elevation marks of the cranes’ installment at +23 m, +16.8 m and +8.55 m and for the strength calculation of the supporting systems of the building using the dynamic analysis method (DAM) and the linear-spectral method (LSM). The equations of motion with multiple degrees of freedom of the dynamic model were solved using the numerical Gear method and the linear-spectral method (LSM). Based on the calculated floor accelerograms, the probability model of the seismic action was built in the form of probability-statistical floor accelerograms for the elevation marks of the cranes’ installment. The stress-strain state of the building and the bridge cranes was calculated under the seismic action conditions. The development of the LSM theory was proposed for the spatial constructions of industrial buildings with crane loadings. The efficiency of the proposed calculated methodology was established, and this proposed methodology was tested in the industrial sphere of a facility with nuclear energy usage that conforms to tightened seismic safety standards.
Search Articles
Keywords: Seismic safety, Industrial buildings, Load-lifting cranes, Earthquake accelerograms, Equations of motion, Stress-strain state
Pages: 104-123
WSEAS Transactions on Applied and Theoretical Mechanics, ISSN / E-ISSN: 1991-8747 / 2224-3429, Volume 9, 2014, Art. #10