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Article
Publication date: 19 May 2020

Jieh-Jiuh Wang

In the current study, the researchers tracked the steps that were taken (in the past 20 years after the occurrence of the 921 earthquake) to enhance the safety of students and…

Abstract

Purpose

In the current study, the researchers tracked the steps that were taken (in the past 20 years after the occurrence of the 921 earthquake) to enhance the safety of students and teachers on campus by rebuilding the schools according to higher standards. Additionally, the researchers analyzed the process of school reconstruction in Taiwan after the Chi-Chi earthquake, as well as the resilience of the rebuilt schools.

Design/methodology/approach

This paper collected extensive relevant literature to serve as a basis for data analysis. Subsequently, they examined the conditions of selected schools before and after they were affected by the earthquake, as well as the reconstruction process of these schools. The purposive sampling method was also adopted to assemble a unique and representative sample.

Findings

This study concluded a new disaster risk reduction education system in Taiwan, from safe learning facilities, school disaster management and risk reduction and resilience education perspectives. It encouraged school and community collaboration regarding establishing a comprehensive disaster management framework.

Originality/value

The paper kept tracks of how schools recovered and restored after the 921 earthquake based on global disaster management trends and local disaster risk reduction education. It also highlighted the major changes within the school resilience system and the importance of disaster risk reduction education in Taiwan.

Details

Disaster Prevention and Management: An International Journal, vol. 29 no. 4
Type: Research Article
ISSN: 0965-3562

Keywords

Article
Publication date: 17 July 2023

Faisal Mehraj Wani, Jayaprakash Vemuri and Rajaram Chenna

The objective of the study is to examine the response of reinforced concrete (RC) structures subjected to Near-Fault Ground Motions (NFGM) and highlight the importance of…

116

Abstract

Purpose

The objective of the study is to examine the response of reinforced concrete (RC) structures subjected to Near-Fault Ground Motions (NFGM) and highlight the importance of considering various factors including the influence of the relative geographical position of near-fault sites that can affect the structural response during an earthquake.

Design/methodology/approach

In this paper, the response of a four-storey RC building subjected to NFGMs with varied characteristics like hanging wall and footwall in conjunction with directivity and the effect of pulse-like ground motions with rupture direction are investigated to understand the combined influence of these factors on the behavior of the structure. Furthermore, the capacity and demand of the structural element are investigated for computing the performance ratio.

Findings

Results from this study indicate that the most unfavorable combinations for structural damage due to near-fault ground motion are the hanging wall with forward rupture, the fault normal component of ground motions, and pulse-like ground motions with forward directivity.

Originality/value

The results from this study provide valuable insight into the response of RC structures subjected to NFGM and highlight the importance of considering various factors that can affect the structural response during an earthquake. Moreover, the computation of capacity and demand of the critical beam indicates exceedance of desired limits, resulting in the early deterioration of the structural elements. Finally, the analytical analysis from the present study confirms that the hanging wall with forward ruptures, pulse-like motions, and fling steps are the most unfavorable combinations for seismic structural damage.

Details

International Journal of Structural Integrity, vol. 14 no. 4
Type: Research Article
ISSN: 1757-9864

Keywords

Article
Publication date: 23 August 2011

Yaser Jafarian, Mohammad H. Baziar, Mohammad Rezania and Akbar A. Javadi

In this paper, the peak kinetic energy density (KED) of soil particles during earthquake excitation is used as an intensity measure for the evaluation of liquefaction potential…

Abstract

Purpose

In this paper, the peak kinetic energy density (KED) of soil particles during earthquake excitation is used as an intensity measure for the evaluation of liquefaction potential under field conditions. The paper seeks to discuss this measure.

Design/methodology/approach

Using centrifuge tests data, it is shown that seismic pore water pressure buildup is proportional to cumulative KED at a particular soil depth. Linear relationships are found between cumulative kinetic energy and corresponding cumulative strain energy. To consider the effect of soil amplification, several equivalent linear ground response analyses are performed and the results are used to derive an equation for depth reduction factor of peak kinetic energy density. Two separate databases of liquefaction case histories are used in order to validate the proposed model. The performance of the proposed model is compared with a number of commonly used shear stress‐based liquefaction assessment methods. Finally, the logistic regression method is employed to obtain probabilistic boundary curves based on the present model. Parametric study of the proposed probabilistic model is carried out to verify its agreement with the previous methods.

Findings

It has been shown that the kinetic energy model works satisfactorily in classifying liquefied and non‐liquefied cases compared with the existing recommendations of shear stress‐based criterion. The results of the probabilistic kinetic energy model are in good agreement with those of previous studies and show a reasonable trend with respect to the variations of fines content and effective overburden pressure. The proposed model can be as used an alternative approach for assessment of liquefaction potential.

Originality/value

These findings make a sound basis for the development of a kinetic energy‐based method for assessment of liquefaction potential.

Details

Engineering Computations, vol. 28 no. 6
Type: Research Article
ISSN: 0264-4401

Keywords

Content available
Article
Publication date: 23 July 2020

Annabelle Moatty

Abstract

Details

Disaster Prevention and Management: An International Journal, vol. 29 no. 4
Type: Research Article
ISSN: 0965-3562

Article
Publication date: 12 October 2010

Wei‐Ling Chiang, Dung‐Jiang Chiou, Cheng‐Wu Chen, Jhy‐Pyng Tang, Wen‐Ko Hsu and Te‐Yu Liu

This study aims to investigate the relationship between structural damage and sensitivity indices using the Hilbert‐Huang transform (HHT) method.

Abstract

Purpose

This study aims to investigate the relationship between structural damage and sensitivity indices using the Hilbert‐Huang transform (HHT) method.

Design/methodology/approach

The relationship between structural damage and the sensitivity indices is obtained by using the HHT method. Three sensitivity indices are proposed: the ratio of rotation (RR), the ratio of shifting value (SV) and the ratio of bandwidth (RB). The nonlinear single degree of freedom and multiple degree of freedom models with various predominant frequencies are constructed using the SAP2000 program. Adjusted PGA El Centro and Chi‐Chi (TCU068) earthquake data are used as the excitations. Next, the sensitivity indices obtained using the HHT and the fast Fourier transform (FFT) methods are evaluated separately based on the acceleration responses of the roof structures to earthquakes.

Findings

Simulation results indicate that, when RR < 1, the structural response is in the elastic region, and neither the RB nor SV in the HHT and FFT spectra change. When the structural response is nonlinear, i.e. RR1, a positive trend of change occurs in RB and RR, while in the HHT spectra, SV increases with an increasing RR. Moreover, the FFT spectra reveal that SV changes only when the RR is sufficiently large. No steady relationship between the RB and the RR can be found.

Originality/value

The paper demonstrates the effectiveness of the HHT method.

Details

Engineering Computations, vol. 27 no. 7
Type: Research Article
ISSN: 0264-4401

Keywords

Content available
Article
Publication date: 1 May 2001

60

Abstract

Details

Disaster Prevention and Management: An International Journal, vol. 10 no. 2
Type: Research Article
ISSN: 0965-3562

Article
Publication date: 9 January 2007

Adel M. Hanna, Derin Ural and Gokhan Saygili

In the literature, several empirical methods can be found to predict the occurrence of nonlinear soil liquefaction in soil layers. These methods are limited to the seismic…

4519

Abstract

Purpose

In the literature, several empirical methods can be found to predict the occurrence of nonlinear soil liquefaction in soil layers. These methods are limited to the seismic conditions and the parameters used in developing the model. This paper seeks to present General Regression Neural Network (GRNN) model that addresses the collective knowledge built in simplified procedure.

Design/methodology/approach

The GRNN model incorporates the soil and seismic parameters of the region. It was developed in four phases; identification, collection, implementation, and verification. The data used consisted of 3,895 case records, mostly from the cone penetration test (CPT) results produced from the two major earthquakes that took place in Turkey and Taiwan in 1999. The case records were divided randomly into training, testing and validation datasets. Soil liquefaction decision in terms of seismic demand and seismic capacity is determined by the stress‐based method and strain‐based method, and further tested with the well‐known Chinese criteria.

Findings

The results produced by the proposed GRNN model explore effectively the complex relationship between the soil and seismic input parameters and further forecast the liquefaction potential with an overall success ratio of 94 percent. Liquefaction decisions were further validated by the SPT, confirming the viability of the SPT‐to‐CPT data conversion, which is the main limitation of most of the simplified methods.

Originality/value

The proposed GRNN model provides a viable tool to geotechnical engineers to predict seismic condition in sites susceptible to liquefaction. The model can be constantly updated when new data are available, which will improve its predictability.

Details

Engineering Computations, vol. 24 no. 1
Type: Research Article
ISSN: 0264-4401

Keywords

Article
Publication date: 9 November 2012

Chien‐Yuan Chen and Wen‐Cheng Lee

As a result of awareness of the increasing school accidents in recent years and severe damage to school infrastructure by Typhoon Morakot, this paper seeks to discuss the current…

1288

Abstract

Purpose

As a result of awareness of the increasing school accidents in recent years and severe damage to school infrastructure by Typhoon Morakot, this paper seeks to discuss the current natural disaster prevention education strategy in Taiwan and investigates the seriously damaged schools from Typhoon Morakot.

Design/methodology/approach

Methods of analysis used in this paper include aerial photo interpretation of landslides and debris flows with the aid of field investigation and spatial rainfall distribution by GIS analysis. Additionally, the reasons attributed to the schools’ damages and disaster prevention education strategies in schools after Morakot are discussed.

Findings

After an overall review of the current disaster prevention education programs, the following items are to be stressed in disaster prevention education as a result of studying the effects of Typhoon Morakot: integration of disaster prevention education into formal school curricula; teacher training for campus disaster prevention education; development of a coalition of campus and community‐based disaster management; and study of the impact of climate change and school vulnerability. School infrastructure safety evaluation and risk assessment, education materials and design activities for psychological recovery after disasters, and the connection of school safety management and community‐based disaster prevention are deemed urgent after Typhoon Morakot in Taiwan.

Originality/value

The current achievements of disaster prevention education in Taiwan include the development of operation and support mechanisms, curricula development and experimental schools selection, development of teacher training program, the popularization of disaster prevention education, the development and use of learning materials, and the determination of an effective assessment mechanism. It is expected that disaster prevention education will become part of the formal school curricula. School safety and vulnerability assessments as a result of climate change and student psychological recovery following disasters are urgent lessons to be implemented after learning from the results of Typhoon Morakot in Taiwan.

Details

Disaster Prevention and Management: An International Journal, vol. 21 no. 5
Type: Research Article
ISSN: 0965-3562

Keywords

Content available
Article
Publication date: 1 October 2000

46

Abstract

Details

Disaster Prevention and Management: An International Journal, vol. 9 no. 4
Type: Research Article
ISSN: 0965-3562

Article
Publication date: 4 November 2020

Tzu-Ling Chen

The purpose of this paper is to explore the effects of place attachment and risk perception with bounded rationality on the willingness to live in a high-earthquake-risk area.

Abstract

Purpose

The purpose of this paper is to explore the effects of place attachment and risk perception with bounded rationality on the willingness to live in a high-earthquake-risk area.

Design/methodology/approach

The study establishes a hypothetical model on the basis of the theory of planned behavior, place attachment and risk perception. A structural equation model (SEM) measures the relationships between the variables.

Findings

Place attachment affects individuals and their preferences; it makes them willing to continue living in high-earthquake-risk areas. Additionally, risk perception with bounded rationality (fatalism and optimism bias) might make people believe there is only a slight risk of physical injury or property damage. The overall findings moderately suggest that land-use regulations along fault zone areas are not necessarily driving households away, and such allowance of residential use in the current zoning regulation might mislead people that it is a safe area.

Research limitations/implications

This study uses questionnaires in fault zone-regulated areas where only the fault line has zoning regulations. In addition, the application of SEM has to build upon theory and further examine both direct and indirect effects. The assessment criteria of the model might be limited by the sample amount, causing certain model-fitting results, which are not that significant. The overall findings might be limited by the geographical location and cannot be generalized to other areas in Taiwan.

Practical implications

A more thorough assessment of land-use planning in earthquake-risk areas should consider households’ risk perceptions and adaptation behaviors.

Originality/value

Land-use regulations along fault zone areas might reveal earthquake risk in such areas or mislead people that it is a safe area. Place attachment and risk perceptions might affect individuals’ judgments of whether such risk exists or not. The results could be referred to disaster management in high-earthquake-risk areas.

Details

Disaster Prevention and Management: An International Journal, vol. 29 no. 4
Type: Research Article
ISSN: 0965-3562

Keywords

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