Nonlinear response asymmetric building structures and seismic codes: A state of the art review

A practical implementation of generalized multimodal pushover analysis is presented in this study, where the number of pushovers is reduced significantly in view of the number of modes contributing to seismic response. It has been demonstrated in two case studies that the reduced procedure for generalized push-over analysis is equally successful in estimating the maximum member deformations and forces under a ground excitation with reference to nonlinear response history analysis. It is further shown that the results obtained by using the mean spectrum of a set of ground motions are almost identical to the mean of the results obtained from separate generalized pushover analyses. These results are also very close to the mean results of the nonlinear response history analyses, hence motivating the implementation of generalized pushover analysis with design spectrum.

Download Full-text

Structures under Multi-Hazards: State-of-the-Art and Research Needs

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.438-439.1879 ◽

2013 ◽

Vol 438-439 ◽

pp. 1879-1883

Author(s):

Yong Jun Liu ◽

Yao Wu ◽

Jing Hai Zhou ◽

Yu Wang

Keyword(s):

State Of The Art ◽

Tohoku Earthquake ◽

Life Cycle Costs ◽

Building Structures ◽

Research Needs ◽

Kobe Earthquake ◽

The Pacific ◽

Bridge Structures ◽

Current Design ◽

Building Life Cycle

Recent years, many infrastructures, say building structures and bridge structures, have suffered from multi-hazards. According to official reports, 286 fires broke out due to the 2011 off the Pacific coast of Tohoku Earthquake, and fire after 1995 Kobe earthquake destroyed almost 7000 buildings. Current design codes treat earthquakes, fires and explosions as completely independent. The application of multi-hazard design is essential for improving the safety of structures, reducing building life cycle costs and increasing efficiency. In this paper, some influential multi-hazard incidents are described primarily, and the state-of-the-art and research needs on multi-hazard design are presented.

Download Full-text

Building structures with nonlinear response to external dynamic loading

Vestnik MGSU ◽

10.22227/1997-0935.2016.11.68-77 ◽

2016 ◽

pp. 68-77

Author(s):

A. P. Pustovgar ◽

E. V. Korolev

Keyword(s):

Dynamic Loading ◽

Nonlinear Response ◽

Building Structures

Download Full-text

A Review: Recent Progress in the Design and Development of Nonlinear Radars

Remote Sensing ◽

10.3390/rs13244982 ◽

2021 ◽

Vol 13 (24) ◽

pp. 4982

Author(s):

Ashish Mishra ◽

Changzhi Li

Keyword(s):

Nonlinear Response ◽

State Of The Art ◽

Electronic Devices ◽

Vital Signs ◽

Clutter Suppression ◽

Flight Pattern ◽

Vital Signs Monitoring ◽

Radar Systems ◽

Migratory Patterns ◽

High Level

This paper presents an extensive review of nonlinear response-based radar systems. Nonlinear radars are generally used for clutter suppression purposes. These radars detect the nonlinear response generated by diodes and transistors are used as a tag for target localization. Utilizing the nonlinearity properties of these devices, these radars have been used for purposes including locating humans trapped in earthquakes and avalanches, identifying migratory patterns of animals, examining the flight pattern of bees, and detecting bugs in electronic devices. This paper covers the utilization of these radars in human vital signs monitoring, detecting targets in a clutter-rich environment, etc. State-of-the-art nonlinear radars’ high-level architectures, design challenges, and limitations are discussed here. Recent works and results obtained by the authors are also summarized.

Download Full-text

APPLICATION OF PHOTOGRAMMETRIC METHODS FOR GEOTECHNICAL MONITORING OF EMERGENCY BUILDINGS AND STRUCTURES

Russian Journal of Building Construction and Architecture ◽

10.36622/vstu.2021.51.3.002 ◽

2021 ◽

pp. 27-43

Author(s):

B. A. Popov ◽

N. B. Khakhulina ◽

Yu. S. Netrebina

Keyword(s):

Nuclear Power ◽

State Of The Art ◽

Building Structures ◽

Monitoring Methods ◽

Maintenance And Repair ◽

Geotechnical Monitoring ◽

Technical Issues ◽

Manual Methods ◽

The Stability

Statement of the problem. One of the relevant scientific and technical issues for improving the state-of-the-art and advanced monitoring methods is alarm construction (including in the minds of ordinary minds) with the emergence of uncompromising objects, and the future of unfinished control. It is quite common that conditions arise when it is not possible to perform a full-fledged monitoring of certain types of deformations of building structures by means of traditional methods. It is required to develop universal, superior and manual methods for the control of different geometric parameters of structures for taking timely measures to ensure the stability and stability of the structure and enabling the transition of the structure in the interconnection of the robotic mill as well. Results. All of the considered methods of statistics of the ways to control the output and have been revised based on the maintenance and repair of the conserved Voronezh nuclear power plant for heat supply.Conclusions. The methods of calculating deformations and the quality of the preparation of alarm constructions for metric photography allowance to carry out repeated monitoring of the technical mill with the necessary accuracy.

Download Full-text