New Mexico City International Airport - Control Tower

2021 ◽  
Author(s):  
Tom Rice
Keyword(s):  
New Mexico ◽  
Mexico City ◽  
International Airport ◽  
Design Life ◽  
Base Isolator ◽  
Fixed Base ◽  
Ground Conditions ◽  
Seismic Accelerations ◽  
Airport Site ◽  
Base Design

<p>The New International Airport in Mexico City is being built on some of poorest ground conditions that exist in Mexico City, or indeed anywhere. The ground is extremely soft, rapidly sinking and exposed to a major and unique seismic site hazard. This paper discusses the performance–based engineering design of the 90 m tall Control Tower. The tower is base isolated to significantly reduce the seismic accelerations which would approach 1.0 g with a fixed-base design. The airport site is predicted to settle by 5 m over the 75-year design life due to regional subsidence. A practical, efficient and elegant solution was developed using a shallow pile-enhanced and compensated raft, and a transfer truss which supports the lightweight braced steel tower on seismic base isolator bearings, allowing the building to be founded on the soft soils while accommodating regional subsidence by moving down with it. The design accommodated seismic joint movements of 1.4 m.</p>

New airport will boost Mexico City's economy

2015 ◽  
Keyword(s):  
New Mexico ◽  
Mexico City ◽  
Infrastructure Investment ◽  
Environmental Standards ◽  
Mexican History ◽  
Content Type ◽  
International Airport ◽  
Public Figures

Subject The new Mexico City international airport project. Significance While the need for a new airport has been discussed for decades, plans are finally being put into action. In September 2014 President Enrique Pena Nieto announced the construction of a new international airport in Mexico City (NIAMC). The project has been broadly welcomed by political analysts, public figures and the wider public, and is a major undertaking, representing perhaps the most significant infrastructure investment in modern Mexican history. Impacts If the project is implemented well, it will attract investment and significantly boost Mexico City's economy. The airport's construction will generate nearly 160,000 jobs. The design's ambitious environmental standards may provide a model for similar projects elsewhere.

The Mexico Earthquake of September 19, 1985—Earthquake Behavior of Soft Sites in Mexico City

1988 ◽  
Vol 4 (4) ◽  
pp. 771-786 ◽  
Author(s):  
E. A. Rukos
Keyword(s):  
Mexico City ◽  
Closed Form Solution ◽  
Form Solution ◽  
Homogeneous Layer ◽  
Propagation Models ◽  
Shear Wave Velocities ◽  
Impulse Function ◽  
Fixed Base ◽  
Seismic Accelerations ◽  
Mexico Earthquake

From the september 19, 1985 earthquake there are several acceleration records for the soft (lake bed) sites in Mexico City. One-dimensional propagation models of the incident seismic accelerations incorporate the wave propagation profiles at three of those sites. The undamped computed surface acceleration spectra compare well with the recorded ones for two sites. The other one does not produce adequate results, which is probably due to incomplete information on the shear wave velocities. Further investigation with the site impulse function indicates that the surface accelerations during the september 19, 1985 event had a frequency content determined, to a certain extent, by the natural periods of the site. Direct inspection of the recorded spectra for the september 19, 1985 earthquake at the studied sites shows that the relation between spectral periods corresponds to the closed form solution of an homogeneous layer with a fixed base. This relation may be different for other earthquakes recorded at these sites.

Spanish Folklore in the Southwest: The Pioneer Studies of Aurelio M. Espinosa

1978 ◽  
Vol 35 (2) ◽  
pp. 219-237
Author(s):  
J. Manuel Espinosa
Keyword(s):  
New Mexico ◽  
Cultural History ◽  
Mexico City ◽  
Golden Age ◽  
Field Work ◽  
Spanish America ◽  
First Century ◽  
Old Spanish ◽  
Cultural Life ◽  
History Of

The centuries-old Spanish folk heritage of our Southwest, and its many faceted and enduring influence on the cultural life of the region, has been written about from various rims of observation. This article describes the pioneer studies of Aurelio M. Espinosa on Spanish folklore in the Southwest, with special emphasis on northern New Mexico. Although he made important contributions to the study of Spanish folklore of southern Colorado, Arizona, and California, and to that of Spain, Mexico, and other parts of Spanish America as well, he devoted most of his research and field work to the upper half of New Mexico which is the richest field of Spanish folklore in the Southwest.In viewing the cultural history of New Mexico, Espinosa reminded his readers that its first century as a Spanish colony, the 17th, was the second great century of Spain's Golden Age of arts and letters. With the vigor of Spain's sense of mission in those centuries, her Golden Age radiated to all parts of Spanish America via Mexico City, Lima, and the other principal colonial capitals. At the same time, from the bookshelf and the store of knowledge of the humble missionary, and the folklore of the Spanish settlers, passed down from generation to generation, the spirit of the Golden Age was reflected on the most remote settled frontiers.

Supplemental dampers in base-isolated buildings to mitigate large isolator displacement under earthquake excitations

2015 ◽  
Vol 48 (2) ◽  
pp. 100-117 ◽  
Author(s):  
Daniel H. Zelleke ◽  
Said Elias ◽  
Vasant A. Matsagar ◽  
Arvind K. Jain
Keyword(s):  
Equations Of Motion ◽  
Time History ◽  
Coupled Equations ◽  
History Analysis ◽  
Base Isolator ◽  
Fixed Base ◽  
Passive Dampers ◽  
Supplemental Dampers ◽  
Isolation Systems ◽  
Storey Building

The effect of viscous, viscoelastic, and friction supplemental dampers on the seismic response of base-isolated building supported by various isolation systems is investigated. Although base-isolated buildings have an advantage in reducing damage to the superstructure, the displacement at the isolation level is large, especially under near-fault ground motions. The influence of supplemental dampers in controlling the isolator displacement and other responses of base-isolated building is investigated using a multi-storey building frame. The coupled equations of motion are derived, solved and time history analysis is carried out on a building modeled with fifteen combinations of five isolation systems and three passive dampers. The seismic responses are compared with that of the fixed-base and base-isolated buildings. Based on the results, it is concluded that supplemental dampers are beneficial to control the large deformation at the isolator level. Parametric study is conducted and optimum ranges of damper parameters to achieve reduced isolator displacement without adverse effect on the other responses are determined. Further, it is concluded that the combination of the resilient-friction base isolator (R-FBI) and viscous damper is the most effective in reducing the bearing displacement without significant increase in superstructure forces.

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