Seismic Design of Base-Isolated Buildings in Mexico. Part 1: Guidelines of a Model Code

Tena‐Colunga, Arturo

doi:10.2174/1874149501307010017

Cited by 7 publications

(4 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…However, if the fundamental period of the superstructure is already on the plateau of constant accelerations, the insertion of TI under the foundation slab might prolong the structural period into the descending branch, so that the seismic forces acting on the structure might be reduced. Only in this case will the TI layer act as a traditional seismic base isolation system [12][13][14], so that the earthquake induced forces would be reduced.…”

Section: Seismic Aspect Of the Insertion Of The Ti Layer Beneath The mentioning

confidence: 99%

Principles of Energy Efficient Construction and their Influence on the Seismic Resistance of Light-weight Buildings

Azinović

Koren²,

Kilar³

2014

TOCIEJ

View full text Add to dashboard Cite

Abstract:Recently, an increasing trend of passive and low-energy buildings transferring from non earthquake-prone to earthquake-prone regions has thrown out the question about the seismic safety of such buildings. The paper describes the most commonly used details of energy efficient construction, which could be critical from the point of view of earthquake resistance. The paper focuses on the prevention of ground floor slab thermal bridge and presents a case study on the seismic response of multi-storey wooden buildings founded on the RC foundation slab lying on a thermal insulation (TI) layer made of extruded polystyrene (XPS). The structural response is investigated with reference to the following performance parameters: the building's lateral top displacement, the ductility demand of the superstructure, the friction coefficient demand, the maximum compressive stress in the TI layer and the percentage of the uplifted foundation. A comparison between the response of models founded on a fixed base and models founded on a layer of TI with the same wooden crosslam structure differing in the number of storeys, strength capacity and subjected to earthquakes with different levels of seismic intensity is done. Regarding the building's top displacements, the maximum compressive deformation in the TI layer, and the percentage of the uplifted foundation, the results have shown that the potentially negative influences of inserting the TI under the foundation slab could be expected only for high-rise buildings subjected to severe earthquakes. Oppositely, for the superstructure's ductility demand and for the friction coefficient demand it was demonstrated that the largest demands could be expected in the case of low-rise buildings. The control of friction coefficient demand, which was recognized as critical parameter for analyzed wooden buildings, has shown that the capacity value could be exceeded yet in the case of moderate earthquake occurrence.

show abstract

Section: Seismic Aspect Of the Insertion Of The Ti Layer Beneath The mentioning

confidence: 99%

Principles of Energy Efficient Construction and their Influence on the Seismic Resistance of Light-weight Buildings

Azinović

Koren²,

Kilar³

2014

TOCIEJ

View full text Add to dashboard Cite

show abstract

“…Several studies, such as Stewart et al [2], Shehata et al [3], Dhileep et al [4], Mylonakis and Gazetas [5] proved that gaps exist in seismic codes and SSI can have negative effects on soft soils. In addition, other studies such as Yue and Wang [6], Tena-Colunga [7] and Ruiz [8] compared the seismic structures guidelines of different codes and pointed out their limitations.…”

Section: Introductionmentioning

confidence: 99%

Assessing the Dynamic Behaviour of Midrise Frame Structures Sitting on Silty Sandy Soil

Ismail¹,

Kaddah²,

Raphaël³

2020

TOCIEJ

View full text Add to dashboard Cite

Background: Midrise 5 to 15 storeys frame structures sitting on soft soils are susceptible to damage induced by seismic events. The level of damage is related to the interaction between the structure, foundation and soil called Soil Structure Interaction (SSI). If the level of ground acceleration is low, the wave gets amplified putting the structure at risk of collapse. Objective and Methods: Concerns about SSI have motivated several researchers to investigate the seismic behaviour of structures rested on cohesive and cohesionless soils. The objective of the work presented in this paper is to evaluate the effects of several parameters on the seismic soil structure interaction behaviour of midrise structures sitting on silty sandy soil. Using ABAQUS, reliable 3D models of 5 to 15 storeys midrise concrete frame structures rested on raft foundation were built. The effects of the structure’s number of storeys, raft size and thickness were explored for different column sizes. Fixed-based structures which capture the model adopted in seismic codes and flexible-based structures were hit at the bottom by El-Centro (1940) and Northridge (1994) earthquakes. Results and Conclusion: The results, presented in terms of storey lateral deflection, inter-storey drift, shear force, foundation rocking and response spectrum showed the important contribution of SSI effects on the behaviour of the midrise structures. The model analyses indicated that column size strongly affects the behaviour of flexible structures. Let N be the structure number of storeys and C the column size. The results showed that in terms of storey lateral deflection and levelling shear force, for column sizes C 0.5 X 0.5 m, SSI was detrimental to structures with 10 ≤ N ≤ 15 and beneficial to structures with 5 ≤ N <10. Increasing the column size to C 0.5 X 1 m showed that SSI became detrimental for structures with 10 < N ≤ 15 under El-Centro (1940) and for structures with 7≤ N ≤ 15 under Northridge (1994), and beneficial for structures with 5 ≤ N ≤ 10 under El-Centro (1940) and for structures with 5 ≤ N < 7 under Northridge (1994). The FE results showed that even though base shear increased with raft size, lateral deflections were amplified for C 0.5 X 0.5 m S15 structures and attenuated for C 0.5 X 1 m S15 structures. However, the seismic response of S15 structures was slightly affected by the variation in raft thickness under both column sizes. Finally, the paper includes a discussion and evaluation of the contribution of inertial and kinematic effects, including soil types used on the simulated numerical models’ seismic responses.

show abstract

“…6. It is worth noting that all the reported peak drifts for the structure above the isolation system ( max ) are below the allowable drift limit  u =0.007 proposed for ductile steel frames according to the guidelines for the seismic design of base-isolated structures 42 of the Manual of Civil Structures, a model code in Mexico [12][13] . However, the allowable drift limit  u =0.004 proposed for braced steel frames in the same guidelines is only satisfied entirely for friction pendula with coefficients of sliding friction  fs =0.04 and  ss =0.03 and for pendular systems with =15% for all sites except Culhuacán (Table 14).…”

mentioning

confidence: 99%

Seismic isolation of buildings for power stations considering soil-structure interaction effects

Tena‐Colunga

Pérez-Rocha

Avilés

et al. 2015

Journal of Building Engineering

Self Cite

View full text Add to dashboard Cite

Seismic Design of Base-Isolated Buildings in Mexico. Part 1: Guidelines of a Model Code

Cited by 7 publications

References 22 publications

Principles of Energy Efficient Construction and their Influence on the Seismic Resistance of Light-weight Buildings

Principles of Energy Efficient Construction and their Influence on the Seismic Resistance of Light-weight Buildings

Assessing the Dynamic Behaviour of Midrise Frame Structures Sitting on Silty Sandy Soil

Seismic isolation of buildings for power stations considering soil-structure interaction effects

Contact Info

Product

Resources

About