Bibliografías temáticas / Earthquake-resisting systems

Índice

Artículos de revistas
Tesis
Capítulos de libros
Actas de conferencias

Literatura académica sobre el tema "Earthquake-resisting systems"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 19 de febrero de 2022

Crea una cita precisa en los estilos APA, MLA, Chicago, Harvard y otros

Elija tipo de fuente:

Consulte las listas temáticas de artículos, libros, tesis, actas de conferencias y otras fuentes académicas sobre el tema "Earthquake-resisting systems".

Junto a cada fuente en la lista de referencias hay un botón "Agregar a la bibliografía". Pulsa este botón, y generaremos automáticamente la referencia bibliográfica para la obra elegida en el estilo de cita que necesites: APA, MLA, Harvard, Vancouver, Chicago, etc.

También puede descargar el texto completo de la publicación académica en formato pdf y leer en línea su resumen siempre que esté disponible en los metadatos.

Artículos de revistas sobre el tema "Earthquake-resisting systems"

Eberhard, M. O. y B. E. Meigs. "Earthquake-Resisting System Selection Statistics for Reinforced Concrete Buildings". Earthquake Spectra 11, n.º 1 (febrero de 1995): 19–36. http://dx.doi.org/10.1193/1.1585801.

Texto completo

Resumen

To document current practice in selecting earthquake-resisting systems for reinforced concrete buildings, a survey was sent to consulting firms located in the United States, Canada, Chile, Colombia, Mexico and Peru. The respondents documented the earthquake-resisting systems for 4700 cast-in-place buildings that they had designed during the last five years. In addition, the respondents listed the factors that most affect the selection of earthquake-resisting systems. This paper presents a statistical summary of the responses and compares the responses collected from three U.S. geographical regions (Northern California, Pacific Northwest and Southern California) and among the six surveyed countries.

Los estilos APA, Harvard, Vancouver, ISO, etc.

GUAN, ZhongGuo y JianZhong LI. "Advances in earthquake resisting systems for long-span bridges". SCIENTIA SINICA Technologica 51, n.º 5 (28 de julio de 2020): 493–504. http://dx.doi.org/10.1360/sst-2020-0105.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Rahgozar, Navid, Nima Rahgozar y Abdolreza S. Moghadam. "Equivalent linear model for fully self-centering earthquake-resisting systems". Structural Design of Tall and Special Buildings 28, n.º 1 (7 de noviembre de 2018): e1565. http://dx.doi.org/10.1002/tal.1565.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Baird, A., A. Palermo, S. Pampanin, P. Riccio y A. S. Tasligedik. "Focusing on reducing the earthquake damage to facade systems". Bulletin of the New Zealand Society for Earthquake Engineering 44, n.º 2 (30 de junio de 2011): 108–20. http://dx.doi.org/10.5459/bnzsee.44.2.108-120.

Texto completo

Resumen

Earthquake engineering is facing an extraordinarily challenging era. These challenges are driven by the increasing expectations of modern society to provide low-cost, architecturally appealing structures with high seismic performance. Modern structures need to be able to withstand a design level earthquake with limited or negligible damage such that disruption to business be minimised because of the economic consequences of such downtime. Technological solutions for seismic resisting structural systems are emerging. However, within the goal of developing a seismic-resisting building, not only the structural skeleton of the building but the entire system must be fully protected from damage. This includes the non-structural components of the building such as the claddings, ceilings and contents. Substantial studies are still required to develop technological solutions and design methods capable of achieving such an earthquake resistance structure. This paper presents a review of current technology for facades, including design guidelines for seismic-resistant non-structural components and the steps made towards a performance-based design framework. Alternative conceptual strategies and technical solutions to reduce the damage to non-structural elements will also be introduced.

Los estilos APA, Harvard, Vancouver, ISO, etc.

Filiatrault, André, Robert Tremblay y Assawin Wanitkorkul. "Performance Evaluation of Passive Damping Systems for the Seismic Retrofit of Steel Moment-Resisting Frames Subjected to Near-Field Ground Motions". Earthquake Spectra 17, n.º 3 (agosto de 2001): 427–56. http://dx.doi.org/10.1193/1.1586183.

Texto completo

Resumen

Passive friction and viscous damping systems for retrofitting steel moment-resisting frames located along the west coast of the United States are considered. First, preliminary design procedures are presented for friction as well as linear and nonlinear viscous damping systems. Thereafter, nonlinear dynamic analyses are performed on a six-story moment-resisting frame designed according to seismic provisions for California prior to the 1994 Northridge earthquake. A flexural strength degradation model is considered to account for the brittle behavior of pre-Northridge welded beam-to-column connections. The structure was subjected to three different earthquake ensembles including near-field records developed for major crustal earthquakes in California. The results of a parametric study indicate that, although both friction and viscous damping systems reduce significantly the response of the structure, they are unable by themselves to prevent fracture of welded beam-to-column joints. Connection retrofit measures of the types elaborated after the Northridge earthquake would still be required.

Los estilos APA, Harvard, Vancouver, ISO, etc.

Asadolahi, Seyyed Morteza y Nader Fanaie. "Performance of self-centering steel moment frame considering stress relaxation in prestressed cables". Advances in Structural Engineering 23, n.º 9 (21 de enero de 2020): 1813–22. http://dx.doi.org/10.1177/1369433219900940.

Texto completo

Resumen

Buildings can be designed to limit the earthquake-induced damage to members that can easily be repaired. Self-centering moment-resisting frames can be used as effective structural systems for this purpose. Self-centering moment-resisting frames with prestressed cables are able to return the structure to its original position after the earthquake. The internal forces in self-centering moment-resisting frames are transferred between the beam and the column by post-tensioned cables. As a main member of self-centering connections, prestressed cables play a significant role in such systems. Cable tension decreases over time due to the effect of stress relaxation on the performance of the system. Stress relaxation is a time-dependent phenomenon causing stress reduction over time in the members prestressed at a constant strain. Therefore, the effect of stress relaxation on the performance of self-centering moment-resisting frames can be significant. In this article, after simulating and validating a moment-resisting frame with self-centering connections, stiffness and moment–rotation hysteresis diagrams were analyzed after 0, 1, 5, 10, and 20 years of cable prestressing. According to the results, two equations were presented to estimate the reduction in the connection stiffness and dissipated energy by the system based on prestressing level and the time after prestressing. The proposed equations could be used to model semi-rigid connections.

Los estilos APA, Harvard, Vancouver, ISO, etc.

Rodriguez, Mario E. "Damage Index for Different Structural Systems Subjected to Recorded Earthquake Ground Motions". Earthquake Spectra 34, n.º 2 (mayo de 2018): 773–93. http://dx.doi.org/10.1193/021117eqs027m.

Texto completo

Resumen

This study quantifies the damage index previously proposed by the writer ( Rodriguez 2015 ) for different structural systems subjected to a set of earthquake ground motions recorded during 12 strong earthquakes in different countries. Damage spectra were also computed using this seismic damage index. This study revisits the previously proposed index and shows that this index can also be interpreted as a ratio of velocities in the structural system responding to the earthquake demand. In addition, this study gives a more general damage analysis interpretation than that of the previous study since damage spectra were computed to assess the damage potential of a given recorded earthquake ground motion for different types of earthquake-resisting systems. The results from the damage analysis are consistent with the findings from previous research: most structural wall buildings show satisfactory earthquake performance, whereas frame buildings frequently show severe damage and collapse.

Los estilos APA, Harvard, Vancouver, ISO, etc.

Tremblay, Robert, André Filiatrault, Peter Timler y Michel Bruneau. "Performance of steel structures during the 1994 Northridge earthquake". Canadian Journal of Civil Engineering 22, n.º 2 (1 de abril de 1995): 338–60. http://dx.doi.org/10.1139/l95-046.

Texto completo

Resumen

The performance of concentrically braced steel frames and moment resisting steel frames during the January 17, 1994, Northridge, California, earthquake is examined. Most of the observations made during the reconnaissance visits confirmed the current knowledge on the inelastic response of these structural systems. This permits the anticipation of proper seismic behavior for buildings designed according to the seismic provisions that have been recently introduced in the Canadian building code and standard for steel structures. In some cases, however, the observed damage raised concerns that should be addressed in future investigations or next editions of these codes. Preventing potentially hazardous nonstructural damage, avoiding premature nonductile failures anywhere along the lateral load paths, limiting structural and nonstructural damage due to brace buckling, and accounting for the vertical ground motion are among those issues. Key words: earthquake, seismic, steel, concentrically braced frames, moment resisting frames, weld.

Los estilos APA, Harvard, Vancouver, ISO, etc.

Amirkardoust, Aliasghar, Seyed Azim Hosseini, Seyed Mohammad Seyedhosseini, Hamidreza Rabeifard y Abbas Akbarpournickghalbrashti. "Reliability Assessment of Reinforced Concrete Buildings Using Field Data in Tehran". Journal of Applied Engineering Sciences 10, n.º 1 (1 de mayo de 2020): 39–44. http://dx.doi.org/10.2478/jaes-2020-0007.

Texto completo

Resumen

AbstractReinforced Concrete (RC) structures are a prevalent type of structure. In each year a lot of RC buildings are constructed and there is a large investment on RC buildings. Dual systems (containing RC shear walls and moment resisting frame) and moment resisting frame systems are the most common type of RC buildings in Iran. Earthquake can cause severe damages to RC buildings and it is important to identify which structural system has better performance under seismic excitation. Some researchers have studied seismic reliability of the bridges structures using field data. However, real field data are not used to analyze the reliability of RC buildings. In this study the reliability analysis is used to evaluate the performance of each structural system. The probability distribution of the concrete and steel bars strength are gathered by nun-destructive tests and bar tensile tests. The mentioned tests are done in 110 RC buildings in Tehran. A series of time history analysis are done to determine the probability of failure. Monte Carlo sampling is used for reliability analysis. The reliability of two prevalent RC structural systems are compared under different earthquake records. It is found that the dual system can have a better performance under seismic excitation and it can reduce damages in the earthquake.

Los estilos APA, Harvard, Vancouver, ISO, etc.

Lopes, Mário S. y Rita Bento. "Seismic Behavior of Dual Systems with Column Hinging". Earthquake Spectra 17, n.º 4 (noviembre de 2001): 657–77. http://dx.doi.org/10.1193/1.1423655.

Texto completo

Resumen

In order that moment-resisting frames exhibit adequate ductile behavior under seismic actions, it is necessary that inelastic deformations spread throughout the height of the frames. It is widely accepted that this is only possible if vertical members remain essentially elastic, such as enforced in the most advanced codes of practice. The results of nonlinear dynamic analysis shown in this work demonstrate that this is not the case if frames resist earthquake ground motions together with structural walls. This was attributed to the fact that these elements prevent the development of sidesway mechanisms even if plastic hinges form at all column extremities at a given floor. As a consequence, it is proposed to relax the capacity design procedures for design of ductile frames that resist earthquake ground motions together with structural walls.

Los estilos APA, Harvard, Vancouver, ISO, etc.

Más fuentes

Tesis sobre el tema "Earthquake-resisting systems"

Bourahla, Nouredine. "Knee bracing system for earthquake resisting steel frames". Thesis, University of Bristol, 1990. http://hdl.handle.net/1983/d4ba97ab-0a65-4469-8a69-776a009514d9.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Maryoko, Hadi. "Earthquake Resisting Timber Structure System Composed of Indonesian Engineered Wood Products". Kyoto University, 2013. http://hdl.handle.net/2433/175087.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Peternell, Altamira Luis E. 1981. "Stability-dependent Mass Isolation for Steel Buildings". Thesis, 2012. http://hdl.handle.net/1969.1/148042.

Texto completo

Resumen

A new seismic isolation system for steel building structures based on the principle of mass isolation is introduced. In this system, isolating interfaces are placed between the lateral-load-resisting sub-system and the gravity-load-resisting sub-system. Because of the virtual decoupling existing between the two structural sub-systems, the gravity-load resisting one is susceptible to instability. Due to the fact that the provided level of isolation from the ground is constrained by the stability requirements of the gravity-load resisting structure, the system is named stability-dependent mass isolation (SDMI). Lyapunov stability and its association with energy principles are used to assess the stable limits of the SDMI system, its equilibrium positions, the stability of the equi-librium positions, and to propose a series of design guidelines and equations that allow the optimal seismic performance of the system while guaranteeing the restoration of its undistorted position. It is mathematically shown that the use of soft elastic interfaces, between the lateral- and gravity-load-resisting sub-systems, can serve the dual role of stability braces and isolators well. The second part of the document is concerned with the analytical evaluation of the seismic performance of the SDMI method. First, a genetic algorithm is used to find optimized SDMI building prototypes and, later, these prototypes are subjected to a series of earthquake records having different hazard levels. This analytical testing program shows that, with the use of SDMI, not only can structural failure be avoided, but a dam-age-free structural performance can also be achieved, accompanied by average reductions in the floor accelerations of ca. 70% when compared to those developed by typical braced-frame structures. Since the SDMI system is to be used in conjunction with viscous energy dissi-paters, the analytical testing program is also used to determine the best places to place the dampers so that they are most effective in minimizing the floor accelerations and controlling the floors’ drift-ratios. Finally, recommendations on continuing research are made.

Los estilos APA, Harvard, Vancouver, ISO, etc.

Capítulos de libros sobre el tema "Earthquake-resisting systems"

Poletti, E., G. Vasconcelos y P. B. Lourenço. "Timber frames as an earthquake resisting system in Portugal". En Seismic Retrofitting: Learning from Vernacular Architecture, 161–66. CRC Press, 2015. http://dx.doi.org/10.1201/b18856-30.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Silva, L., G. Vasconcelos, P. Lourenço y F. Akhoundi. "Experimental evaluation of a constructive system for earthquake resisting masonry enclosure walls". En Brick and Block Masonry, 1333–40. CRC Press, 2016. http://dx.doi.org/10.1201/b21889-165.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Actas de conferencias sobre el tema "Earthquake-resisting systems"

Purushothama, Chaithra, H. Sharada Bai y G. Ambrish. "Seismic Behaviour of Six-Storied RC Residential Structure with Existing LLRS". En IABSE Conference, Kuala Lumpur 2018: Engineering the Developing World. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2018. http://dx.doi.org/10.2749/kualalumpur.2018.0411.

Texto completo

Resumen

Using an appropriate structural system is critical to good seismic performance of buildings. While moment- frame is the most commonly used lateral load resisting structural system, addition of other structural systems like structural walls, frame-wall system improve the seismic resistance. Structural system chosen should be suitable for good earthquake performance, with vertical and horizontal members of lateral load resisting system (LLRS) that can carry earthquake effects safely during strong earthquake shaking. Studies on real structures, practically adopted are negligible. Present work deals with the comparison of seismic performance of the structural system under consideration with existing features (Lift core RC wall & Infill effect along the boundary walls) as LLRS in the building using response spectrum and time history method..

Los estilos APA, Harvard, Vancouver, ISO, etc.

Sarkisian, Mark, Rupa Garai, Benton Johnson y Chris Horiuchi. "Enhanced Seismic Systems for Mass-Timber Structures". En IABSE Congress, New York, New York 2019: The Evolving Metropolis. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2019. http://dx.doi.org/10.2749/newyork.2019.1149.

Texto completo

Resumen

Mass-timber provides numerous benefits in reducing structural material impact on the environment by limiting building embodied carbon. Mass timber from sustainably harvested farms is a renewable material and considered a sink from wood carbon sequestration, and the reduced weight of mass timber framed buildings results in less lateral system and foundation materials.Timber’s limited ductility and traditional connections limit applications in high-seismic regions, but a series of novel connections can reliably provide ductility by using friction to dissipate energy, protecting timber elements as they remain essentially elastic. The bolted connections are designed to be easily replaceable after an earthquake and can re-center the building under any residual drift. In these systems, the seemingly incompatible concepts of resilient and sustainable design can be achieved concurrently, using a renewable material for the base material and connections which specifically target faster recovery times.The Pin-Fuse® Joint and Link-Fuse™ Joint systems, used in moment resisting timber frames and cross- laminated timber shear walls systems, rely on slipping of pre-tensioned bolts across friction surfaces to simulate material yielding. This paper will review the theory behind the systems, application of the devices in timber structures, and compare enhanced seismic design to conventional design timber buildings.

Los estilos APA, Harvard, Vancouver, ISO, etc.

N, Nourin, Hazeena R y Asif Basheer. "A Review on the Seismic Performance Assessment of Steel Diagrid Structures". En International Web Conference in Civil Engineering for a Sustainable Planet. AIJR Publisher, 2021. http://dx.doi.org/10.21467/proceedings.112.37.

Texto completo

Resumen

In recent years, there is rapid increase in the construction of high rise structures due to the increase in population, high cost of land and restriction in horizontal growth due to less space. The advancements in the development of technological solutions and construction methods of high rise structures led to the innovative structural systems. One of the important criteria that need to be considered in the design of high rise structures is minimization of lateral loads. Hence, the importance of lateral load resisting system increased than structural systems that resist gravitational loads. Lateral loading due to wind and earthquake are the major factors that have to be considered in the design of high-rise structures. Diagrid structural system is recognized as a unique system in construction of high rise structures which is a variation of tubular structures. It consists of inclined members instead of vertical columns in conventional structures to carry both gravity and lateral loads. It gains popularity due to its structural efficiency and aesthetic potential gained by its unique geometric configuration. The present work reviews studies regarding seismic performance assessment of steel diagrid structures, studies on seismic performance factors of steel diagrid structures, impact of shear-lag effect and comparative studies on diagrids. Diagrids are found to be an efficient structural system for high rise structures in terms of structural efficiency as well as aesthetics. Also, it provides more economy, in terms of consumption of steel, thus making it cost-effective and eco-friendly.

Los estilos APA, Harvard, Vancouver, ISO, etc.

Angelucci, Giulia, Giuseppe Quaranta y Fabrizio Mollaioli. "OPTIMAL LATERAL RESISTING SYSTEMS FOR HIGH-RISE BUILDINGS UNDER SEISMIC EXCITATIONS". En 8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering Methods in Structural Dynamics and Earthquake Engineering. Athens: Institute of Structural Analysis and Antiseismic Research National Technical University of Athens, 2021. http://dx.doi.org/10.7712/120121.8595.18759.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Sococol, Ion, Ionut Ovidiu Toma, Petru Mihai, Nicolae TARANU y Mihai BUDESCU. "AN ALTERNATIVE APPROACH TO IMPROVE THE CAPACITY DESIGN CONCEPT FOR MOMENT RESISTING REINFORCED CONCRETE (RC) FRAME SYSTEMS". En 1st Croatian Conference on Earthquake Engineering. University of Zagreb Faculty of Civil Engineering, 2021. http://dx.doi.org/10.5592/co/1crocee.2021.189.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Shakeel, Sarmad, Luigi Fiorino y Raffaele Landolfo. "NUMERICAL EVALUATION OF THE BEHAVIOUR FACTOR OF LIGHTWEIGHT STEEL LATERAL FORCE RESISTING SYSTEMS ACCORDING TO FEMA P695". En 7th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering Methods in Structural Dynamics and Earthquake Engineering. Athens: Institute of Structural Analysis and Antiseismic Research School of Civil Engineering National Technical University of Athens (NTUA) Greece, 2019. http://dx.doi.org/10.7712/120119.7348.20812.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Li, Hong-Nan, Yan-Gang Zhao, Chen Li y Yong-Wei Yin. "Analytical Method and Its Experimental Verification for Seismic Reduction of Story-Increased Structures Under Earthquake". En ASME 2005 Pressure Vessels and Piping Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/pvp2005-71349.

Texto completo

Resumen

Structural passive control devices have widely used in various engineering projects for resisting the wind load or earthquake excitation until now. The friction damper and sand isolation technology among them are of many advantages, such as easy installation, less cost and less maintenance fee. In this paper, a new type of energy-dissipated structural system for the reconstructive building with the story-increased frame is presented and investigated, in which the sliding-friction layer with sand between the lowest increased floor of outer frame structure and roof of original building is applied, and friction energy-dissipated dampers are used for the connections between the columns of outer frame and each floor of original building. A simplified analytical model of this system is proposed. For more appropriate theoretical analysis, the non-classical damping approach is introduced to calculation. The shaking table test is performed on the model of system to verify the effectiveness of the above seismic reduction system and proposed method. The results show that friction and energy-dissipated devices are very effective in reducing the seismic response and dissipating the input energy of model structure.

Los estilos APA, Harvard, Vancouver, ISO, etc.

Aldahlki, Husain S. A. y Mary Beth Hueste. "Seismic Behavior of a Tall Building Reinforced with High Strength Bars". En IABSE Congress, New York, New York 2019: The Evolving Metropolis. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2019. http://dx.doi.org/10.2749/newyork.2019.0117.

Texto completo

Resumen

Reinforced concrete tall buildings are widely spread around the world. Tall buildings in high seismic regions have substantial capacity requirements due to both gravity loads and seismic demands that often lead to very heavily congested sections. Therefore, using high strength reinforcement with a reduced area of steel bars introduces a valuable solution. However, the tensile characteristics of high strength reinforcement differ from conventional reinforcement and may lead to differences in the structural response and behavior of structural members. Consequently, the global response of the building seismic-force-resisting system (SFRS) could vary from that of a conventional steel reinforced SFRS. This study investigates the global and local response of a tall concrete building reinforced with high strength reinforcement (Grade 100 (690 MPa)) when subject to earthquake demands. A three-dimensional model for a case study building, which is a 46-story tall building, was prepared. By using the capabilities of nonlinear analyses in OpenSees, the building model was developed and analyzed. The performance of the building reinforced with conventional and high strength reinforcement was investigated and reviewed according to the Tall Building Initiative (TBI) guidelines. Eleven different ground motions were selected and scaled to represent the Risk-Targeted Maximum Considered Earthquake (MCER) level for the case study building site. The global and local response parameters showed that the tall building reinforced with a reduced area of high strength steel (Grade 100 (690 MPa)) performed similarly to the same building reinforced with conventional reinforcement (Grade 60 (414 MPa)). The results provide information relevant to the implementation of high strength reinforcement in seismic applications and serves to increase the understanding of the resulting impacts on the structural response of a case study tall building.

Los estilos APA, Harvard, Vancouver, ISO, etc.

Kim, Jung Han, Min Kyu Kim y In-Kil Choi. "Experimental Study on the Ultimate Limit State of a Lead-Rubber Bearing". En ASME 2016 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/pvp2016-63774.

Texto completo

Resumen

Recently, a base isolation system used to be introduced for the seismic safety of nuclear power plants. The isolation system should keep its function over the design level earthquake with a high confidence like any other equipment in nuclear power plants. The seismic response of isolators by the extended design level earthquakes should be controlled not to exceed the ultimate limit state of it. In this study, lead-rubber bearings (LRBs) were tested. The small scale test specimen of a LRB had 550 mm diameter and the full scale was 1,500 mm diameter. The displacement controlled horizontal displacements were applied to the specimens with a constant vertical load in a test. The small scale model was tested under the various vertical load conditions to define the failure mode when the compressive force is excessive. In this test, the shear fracture by a large horizontal displacement with a relatively low axial load around the design axial load and the buckling fracture by a high axial load with a small effective area resisting the axial force were compared. The full scale model was tested to understand various characteristics such as the dependency of strain rate, the function of excitation displacement and the bidirectional behavior on the two-dimensional horizontal plane. As an experimental result, the behaviors of isolators under the ultimate limit state were investigated and the considerations for the prototype test of isolation devices were discussed.

Los estilos APA, Harvard, Vancouver, ISO, etc.

Yu, Yu, Shengfei Wang y Fenglei Niu. "Reliability of PCCS in AP1000 Based on Accident Development". En 2016 24th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/icone24-60155.

Texto completo

Resumen

Passive containment cooling system (PCCS) is an important safety-related system in AP1000 nuclear power plant, by which heat produced in reactor is transferred to the heat sink – atmosphere – based on natural circulation, independent of human response or the operation of outside equipments, so the reactor capacity of resisting external hazards (earthquake, flood, etc.) is improved. However since the system operation based on natural circulation, many uncertainty factors such as temperatures of cold and heat sources will affect the system reliability, and physical process failure becomes one of the important contributors to system failure, which is not considered in the active system reliability analysis. That is, the system will lose its function since the natural circulation cannot be established or kept even when the equipments in the system can work well. The function of PCCS in AP1000 is to transfer the heat produced in the containment to the environment and to keep the pressure in the containment below its threshold. After accidents the steam is injected to the containment and can be cooled and condensed when it arrives at the containment wall, then the heat is transferred to the atmosphere through the steel vessel. So the peak value of the pressure is influenced by the steam situation which is injected into the containment and the heat transfer and condensate processes under the accidents. In this paper the dynamic thermal-hydraulic (T-H) model simulating the fluid performance in the containment is established, based on which the system reliability model is built. Here the total pressure in the containment is used as the success criteria. Apparently the system physical process failure may be related to the system working state, the outside conditions, the system structure parameters and so on, and it’s a heavy work to analyze the influences of all the factors, so only the effects of important ones are included in the model. Monte Carlo (MC) simulation is used to evaluate the system reliability, in which the input parameters such as air temperature are sampled based on their probabilistic density distributions. The pressure curves along with the accident development are gained and the system reliabilities under different accidents are gotten as well as the main contributors. The results illustrate that the system physical process failure probabilities are varied under different climate conditions, which result in the system reliability and the main contributors to system failure changing, so the different methods can be taken to improve the system reliability according to the local condition of the nuclear power plant.

Los estilos APA, Harvard, Vancouver, ISO, etc.

Ofrecemos descuentos en todos los planes premium para autores cuyas obras están incluidas en selecciones literarias temáticas. ¡Contáctenos para obtener un código promocional único!