Evaluation the effect of amplitude scaling of real ground motions on seismic demands accounting different structural characteristics and soil classes

Demir, Ahmet; Palanci, Mehmet; Kayhan, Ali Haydar

doi:10.1007/s10518-023-01780-1

Cited by 7 publications

(5 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Earthquakes are natural disaster events, and the selection of input seismic records to study earthquakes is an important issue [34,35]. Real seismic motion records are extremely important.…”

Section: Selection Of Seismic Wavesmentioning

confidence: 99%

Longitudinal Seismic Response of Metro Tunnels Crossing a Fault with Multi-Slip Surfaces

Wang,

Yang,

Teng

et al. 2024

Buildings

View full text Add to dashboard Cite

There are multiple seismic fault zones near Xi’an in China, among which the Li Piedmont Fault has multiple slip surfaces. A 3D finite element dynamic Soil–Fault–Tunnel model was established based on the engineering background of the Xi’an Metro tunnel orthogonally crossing the Li Piedmont Fault. The input seismic loads used the Chi-Chi, El-Centro, and artificial seismic waves, and the latter was artificially synthesized based on seismic conditions and site conditions of actual engineering. The Chi-Chi seismic wave with larger PGV/PGA and wider acceleration-sensitive area is a near-field seismic wave, while the others are far-field seismic waves. The seismic loads were transformed into the equivalent nodal force on the boundary nodes of the model, and nonlinear dynamic calculation was carried out to obtain the longitudinal seismic response of the structure. The main results show that the fault amplifies the seismic response of the tunnel, and the tunnel at the position of the fault slip surfaces is more vulnerable to failure, especially near the slip surface between the hanging wall and the fault, where the maximum acceleration, soil pressure, and internal force of the tunnel structure occur. In addition, the seismic response of the tunnel and soil caused by near-field seismic motion is significantly stronger than that caused by far-field seismic motion.

show abstract

Section: Selection Of Seismic Wavesmentioning

confidence: 99%

Longitudinal Seismic Response of Metro Tunnels Crossing a Fault with Multi-Slip Surfaces

Wang,

Yang,

Teng

et al. 2024

Buildings

View full text Add to dashboard Cite

show abstract

“…There are many other studies that use NRHA for analysing a broader range of EDPs (such as input energy, residual displacement, and non-exceedance probability curves) and structural types (vertically regular and irregular structures) but they consider only singleor bidirectional recordings, neglecting the effect obtained from seismic incidence angle variability on structural demand; for this reason, their results were not included in the overall framework of this paper. For example, but not exhaustively, the works of [87][88][89][90][91][92] can be considered.…”

Section: Nonlinear Response History Analysismentioning

confidence: 99%

“…ASCE/SEI 7-22 [94] specifies that when NRHA are used to analyse structures located on NF sites, each pair of horizontal ground motion components has to be rotated along the FN and FP directions. At all other sites, away from the causative fault, ASCE/SEI 7-16 [88] requires the application of each pair of horizontal ground motion components in orthogonal orientations of the structure (typically 0 • and 90 • ). According to [95,96], rotating ground motion pairs along FN/FP directions in the proximity of an active fault system represents a conservative strategy because this allows the designer/engineer to consider both the direction of rupture propagation and the effects of the seismic energy along a single long-period pulse of motion in the FN/FP directions [97][98][99].…”

Section: Standardsmentioning

confidence: 99%

Historical Evolution of the Impact of Seismic Incident Angles on the Safety Assessment of Various Building Construction Typologies

Cantagallo,

Terrenzi,

Camata

et al. 2024

Buildings

View full text Add to dashboard Cite

In the existing building stock, typically characterised by a high degree of irregularity, the effects of earthquakes are strongly dependent on the epicentre–structure direction and the angle of incidence of the seismic motion. However, the scientific community has not yet reached a unanimous consensus on the evaluation of the effects of seismic incidence angles. Therefore, this paper conducts an extensive investigation of the international literature on current methods to consider seismic directionality, systematically reviewing more than 80 publications on this topic. Following a brief overview of the problem and an analysis of the initial developments of the multidirectionality concept of seismic input, a state-of-the-art review is presented based on the considered analysis methods, specifically response spectrum analysis, nonlinear static analysis, and nonlinear response history analysis. Moreover, the adoption of multidirectional seismic input in popular codes and standards is presented and discussed. This study provides the first comprehensive synthesis of research on the seismic incidence angles across diverse building typologies, offering crucial insights for future code revisions and highlighting significant gaps in current analytical methods and standards, thereby setting a new direction for subsequent empirical investigations. Specifically, the extensive state-of-the-art review revealed that, until now, the evaluation of the angle of incidence was primarily conducted on existing reinforced concrete buildings with a limited number of storeys, analysed with nonlinear response history analysis. This underscores the need for future research to extensively investigate the impact of the angle of incidence on other types of construction typologies.

show abstract

“…The matter of selecting sets of accelerograms that are compatible to given design spectra is of the utmost importance to carry out time-history seismic analyses. Many studies dealt with this matter, see e.g., [13][14][15][16][17][18], and most codes provide rules and suggestions for this purpose. A recent paper proposed a site-specific estimation of strong ground motions in the Lebanese area [19], and also showed that the Lebanese norm may give unsafe amplification factors for short period structures.…”

Section: Introductionmentioning

confidence: 99%

A Contribution to Facilitate the Seismic Design in Lebanon Using Short-Length Spectrum-Consistent Earthquakes

Gerges,

Porcu,

Vielma Pérez

2023

Applied Sciences

View full text Add to dashboard Cite

Seismic regulations of developing countries are often grounded on rules of more experienced countries. The Lebanese regulations refer to four foreign codes, this excess of guidelines generating confusion and conflicting design choices. Moreover, the scarcity of earthquakes recorded in the Lebanese area makes it difficult to obtain suitable sets of spectrum-consistent accelerograms for dynamic analyses. Sorting through the reference regulations and the indications for their local application, this paper derives and compares all the design response spectra allowed by the Lebanese code. Consistent with the design response spectra of the two codes that are still in force (of the four referred to), some suites of spectrum-consistent accelerograms are derived. Based on the Arias intensity, a general procedure is also proposed to reduce the time duration of the accelerograms, while saving the earthquake energy content and, thus, the reliability of the results. Full-length and short-length spectrum-consistent accelerograms are thus made available for the Lebanese design. With reference to a two-dimensional model some comparisons between response-spectrum-based and earthquake-based analyses are provided, which showed that the Lebanese code allows different safety levels for earthquake-resistant buildings. The paper provides a very useful contribution to researchers and designers that are involved in the protection of the Lebanese building heritage from seismic hazards, and it also provides data and tools that can be more generally exploited in other seismic areas.

show abstract

Evaluation the effect of amplitude scaling of real ground motions on seismic demands accounting different structural characteristics and soil classes

Cited by 7 publications

References 54 publications

Longitudinal Seismic Response of Metro Tunnels Crossing a Fault with Multi-Slip Surfaces

Longitudinal Seismic Response of Metro Tunnels Crossing a Fault with Multi-Slip Surfaces

Historical Evolution of the Impact of Seismic Incident Angles on the Safety Assessment of Various Building Construction Typologies

A Contribution to Facilitate the Seismic Design in Lebanon Using Short-Length Spectrum-Consistent Earthquakes

Contact Info

Product

Resources

About