Bulletin of Earthquake Engineering最新文献

{"title":"Experimental study and numerical simulation of seismic performance of precast segmental bridge piers with tapered sleeve locking-type splicing joints","authors":"Jian Wang,&nbsp;Yongyu Yuan","doi":"10.1007/s10518-025-02150-9","DOIUrl":"10.1007/s10518-025-02150-9","url":null,"abstract":"<div><p>The tapered sleeve locking-type splicing (TSLS) joint, as a new type of mechanical connection of steel bars, provides a new method for the connection of longitudinal steel bars in precast segmental bridge (PSB) piers. In this paper, the methods of quasi-static test and numerical simulation were adopted to study the seismic performance of PSB piers with TSLS joints (PPTJ). The results showed that the failure processes of PPTJ and cast-in-place piers (CIPP) were basically identical under quasi-static cyclic loading, and the failure modes were both flexural failure. When the reinforcement ratio was identical, the energy dissipation capacity and self-resetting performance of PPTJ and CIPP were comparable, and the horizontal bearing capacity and stiffness of PPTJ were improved compared to those of CIPP. When the volumetric stirrup ratio at the bottom of pier body was doubled, the horizontal bearing capacity, stiffness and energy dissipation capacity of PPTJ were improved slightly, and the self-resetting performance was increased by 8.4% when PPTJ was failure. When the longitudinal reinforcement ratio was doubled, the horizontal bearing capacity, stiffness, energy dissipation capacity and self-resetting performance of PPTJ were obviously improved. The self-resetting performance of PPTJ was slightly higher than that of the PSB piers with grouted sleeve joints, and the other seismic performance indexes of the two kinds of piers were comparable. The research results can provide reference for the seismic design and engineering application of PPTJ.</p></div>","PeriodicalId":9364,"journal":{"name":"Bulletin of Earthquake Engineering","volume":"23 6","pages":"2669 - 2692"},"PeriodicalIF":3.8,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143861227","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Back analysis for estimating the larger seismic actions applied to an ancient Greek dry stone monument in the last millennium","authors":"Konstantinos A. Papadopoulos","doi":"10.1007/s10518-025-02155-4","DOIUrl":"10.1007/s10518-025-02155-4","url":null,"abstract":"<div><p>This paper presents an investigation of the response to past earthquakes of the facade colonnade of the classical temple of Apollo Epikourios, Peloponnese, Greece, which is still standing, damaged but in full length and in most of its height. The investigation was based on field studies and sophisticated FE simulations and was carried out in three stages. Initially, it was determined which major damage of the colonnade must be attributed solely to earthquake actions. Afterwards, the efficiency of the selected for use numerical tool (Abaqus) was examined by numerically reproducing a seismic experiment on a colonnade consisted of three columns capped with four epistyle (architrave) blocks. The results were quite satisfactory, although it appeared that the numerical predictions underestimate the magnitude of the dynamic behaviour of the colonnade; this finding was taken into account during the evaluation of the results of the last part of the work. Within the third stage, a detailed numerical model was created, reproducing the façade colonnade of Apollo temple in the state which (according to field study results and reasonable assumptions) it was preserved in the period of the 13th–14th century AD when several blocks collapsed (possibly simultaneously) from its architrave. The model was excited with records of six earthquakes with different characteristics, scaled with gradually increasing factors. The numerical results showed that a simultaneous toppling of most of the architrave blocks in question could have happened as the result of an earthquake with a PGA around 0.60 g and predominate period around 0.6 s, or the result of few (3–4) earthquakes of similar frequency content and PGA around 0.40–0.55 g. Therefore, the relative conclusions of the field studies were strengthened, the maximum level of shaking occurred at the region of the monument at least during the last millennium was estimated, and the selected numerical tool and the adopted modelling parameters were further verified.</p></div>","PeriodicalId":9364,"journal":{"name":"Bulletin of Earthquake Engineering","volume":"23 6","pages":"2693 - 2714"},"PeriodicalIF":3.8,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10518-025-02155-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143861228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nonlinear seismic response and residual drift determination combining ground acceleration data with recorded videos","authors":"R. Boroschek,&nbsp;T. Yeow,&nbsp;K. Kusunoki","doi":"10.1007/s10518-025-02142-9","DOIUrl":"10.1007/s10518-025-02142-9","url":null,"abstract":"<div><p>While we can only instrument a small number of structures with traditional sensors, cities have become surrounded by video cameras that record response of whatever is in their field of view. In this paper we have a proof of concept that if we combine the seismic response data derived from video cameras with input obtained from accelerometers installed at ground level, the linear and nonlinear response of the structure can be estimated. We present an application and validation in a laboratory environment on a plane steel frame under varying shaking amplitudes. Linear and nonlinear responses are monitored using standard acceleration and displacement sensors and later compared with the displacements derived from videos using standard computer vision techniques. The comparison of computer vision derived displacements with traditional sensor data gives excellent results with differences in maximum values in relative to base displacement time histories of less than 10%. Later, the derived computer vision relative to ground displacements are used in parametric input-output system identification to estimate the evolution of the modal parameters as a function of response amplitude. For this case, the synchronized input from an inertial accelerometer is used. The result from this identification process is nearly identical to the ones obtained using traditional acceleration sensors. To extend its use, double differentiation of the computer vision derived displacement is used to estimate accelerations in a reduced frequency band with practically no difference with acceleration records on the selected band. There are several advantages detected from combining standard sensors and computer vision techniques, like full space definition of possible monitoring points and limiting the distortion of acceleration records due to structural rotations and the possibility to obtain residual displacements. The methodology to obtain reliable displacement is presented together with the determination of varying modal property as a function of shaking intensity and damage level.</p></div>","PeriodicalId":9364,"journal":{"name":"Bulletin of Earthquake Engineering","volume":"23 6","pages":"2557 - 2579"},"PeriodicalIF":3.8,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143861229","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Correction: Axial-shear-flexure interactive behavior and completed shear strength model of reinforced concrete members considering steel-bond slip","authors":"J. H. Wang,&nbsp;Y. P. Sun","doi":"10.1007/s10518-025-02136-7","DOIUrl":"10.1007/s10518-025-02136-7","url":null,"abstract":"","PeriodicalId":9364,"journal":{"name":"Bulletin of Earthquake Engineering","volume":"23 5","pages":"2083 - 2083"},"PeriodicalIF":3.8,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143830956","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Parameter calibration and broadband ground motion simulation based on bayesian optimization—a case study of the 2023 Türkiye earthquake doublet","authors":"Qianli Yang,&nbsp;Ruifang Yu,&nbsp;Zongchao Li,&nbsp;Peng Lin","doi":"10.1007/s10518-025-02143-8","DOIUrl":"10.1007/s10518-025-02143-8","url":null,"abstract":"<div><p>Effectively conducting rapid ground motion field simulations under the uncertainty of source and propagation path parameters following an earthquake poses a significant challenge for assessing earthquake disaster losses. This study presents an efficient broadband ground motion simulation method introducing Bayesian hyperparameter optimization into the stochastic finite fault model. This new method iteratively corrects and optimizes source and path parameters through Bayesian optimization to reduce parameter uncertainty in ground motion simulation. Therefore, it can obtain optimal ground-motion estimation while calibrating regional seismic parameters. Firstly, using suggested method, accelerations at 12 stations are simulated for the 2023 Türkiye earthquake (<i>M</i>_w7.5). Then, by comparing with the records of 12 stations, the effectiveness of the method is not only verified, but also the regional key seismological parameters are calibrated to reduce uncertainty, including stress drop and attenuation coefficient, etc. Finally, the calibrated parameters are used in the simulation of the earthquake in Türkiye (<i>M</i>_w7.8) and the ground-motion field is well reproduced. The results show that with the help of efficient black-box exploration capabilities of Bayesian optimization, the established new method can not only be used for the calibration of seismological parameters in areas lacking earthquake data, but also can efficiently simulate the ground motion field that conforms to the regional geological environment. Therefore, it is suitable for rapid assessment of post-earthquake disasters.</p></div>","PeriodicalId":9364,"journal":{"name":"Bulletin of Earthquake Engineering","volume":"23 6","pages":"2451 - 2488"},"PeriodicalIF":3.8,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143861397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Proposal of horizontal elastic response spectra for low and high seismicity regions towards the revision of Algerian seismic code","authors":"Nasser Laouami,&nbsp;Abdennasser Slimani","doi":"10.1007/s10518-025-02120-1","DOIUrl":"10.1007/s10518-025-02120-1","url":null,"abstract":"<div><p>The elastic response spectra are fundamental engineering tools provided by seismic codes for performing structural seismic analysis and seismic risk reduction. This work is performed in the framework of the ongoing revision of the current Algerian seismic code RPA99/2003, which provides elastic spectra whose reproduction performance of real seismic actions, is called into question by recent earthquakes. Algerian seismicity is characterized by frequent moderate earthquakes, as well as rare severe earthquakes such as those of Boumerdes (Mw = 6.8 on May 21, 2003) and El Asnam (Ms = 7.3 on October 10, 1981). The compilation of a large accelerometric database from Algeria and the surrounding areas has recently made it possible to develop new horizontal elastic acceleration response spectra and soil amplification factors for four different soil classes— very soft, soft, firm, and rock—as well as for two seismicity levels—weak to moderate seismicity (wms) for the central and southern regions and moderate to high seismicity (mhs) for the northern region. 153 earthquakes are used, with a total of 773 3-component records from events with magnitudes ranging from 3.0 to 7.4 and hypocentral distances less than 200 Km. A statistical approach is used which leads to the estimation of new constant spectral acceleration branch limits and soil factors for the proposed horizontal elastic response spectra, for two seismicity levels and four soil classes. Soil factors for the two seismicity levels are estimated using the intensity of the Housner spectrum. Significant variations in elastic spectra developed for the two seismicity levels, wms and mhs, are highlighted. The first difference involves the branch plateau of the constant spectral acceleration, which swings toward the high periods in mhs but is dominated by the low periods in wms. The second difference is the spectrum amplitude related to site factors, which is less important in the case of mhs due to the effects of nonlinearities in soils subjected to strong seismic accelerations. Furthermore, comparing the proposed elastic acceleration spectra with the spectra provided by Pitilakis et al. (2018), developed in the framework of the ongoing revision of Eurocode 8, reveals comparable trends.</p></div>","PeriodicalId":9364,"journal":{"name":"Bulletin of Earthquake Engineering","volume":"23 6","pages":"2537 - 2556"},"PeriodicalIF":3.8,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143861251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental study on seismic performance of unreinforced masonry walls retrofitted with low-strength engineered cementitious composites","authors":"Chukwuwike Mike Ogwumeh,&nbsp;Dichuan Zhang,&nbsp;Chang-Seon Shon,&nbsp;Deuckhang Lee,&nbsp;Jong Kim","doi":"10.1007/s10518-025-02138-5","DOIUrl":"10.1007/s10518-025-02138-5","url":null,"abstract":"<div><p>Engineered cementitious composites have recently been investigated for seismic retrofitting on unreinforced masonry walls due to their ductile strain hardening behavior. It has been found in literature that the normal-strength engineered cementitious composite can significantly increase the strength of the wall under cyclic in-plane lateral loadings. At the same time, the improvement of the deformation capacity is limited, possibly due to the incompatibility between the masonry wall and the composite in terms of strength and stiffness. To achieve better compatibility, one possible solution is to use low-strength engineered cementitious composites as the retrofitting material. Through an experimental study, this paper investigates the performance of the unreinforced masonry wall retrofitted with the low-strength engineered cementitious composite. Six unreinforced masonry wall specimens with aspect ratios of 0.55 and 0.7 were tested at one-third scale under cyclic in-plane lateral loadings. Two specimens were built without retrofitting as reference cases. The other four were retrofitted by directly troweling the composite on each face of the wall without anchoring to the foundation. The low-strength composite was designed with two compressive strengths, 10 MPa and 25 MPa respectively. From the test results, it was found that the low-strength composite can change the failure mode of the wall, effectively enhance its deformation and ductility capacities, and improve its energy dissipation. The overall deformation and ductility capacities can be increased by 50% ~ 100% depending on the strength of the composites. Additionally, an analytical procedure was proposed to estimate the lateral force capacity of the retrofitted wall based on a section analysis.</p></div>","PeriodicalId":9364,"journal":{"name":"Bulletin of Earthquake Engineering","volume":"23 6","pages":"2647 - 2668"},"PeriodicalIF":3.8,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143861199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Derivation of seismic fragility curves through mechanical-analytical approaches: the case study of the URM school buildings in Friuli-Venezia Giulia region (Italy)","authors":"Sofia Giusto,&nbsp;Ingrid Boem,&nbsp;Sara Alfano,&nbsp;Natalino Gattesco,&nbsp;Serena Cattari","doi":"10.1007/s10518-025-02137-6","DOIUrl":"10.1007/s10518-025-02137-6","url":null,"abstract":"<div><p>Seismic events worldwide have shown that school buildings can exhibit vulnerability levels even higher than ordinary buildings. This highlights the urgent need for reliable risk analyses to guide decision-making in the implementation of large-scale mitigation policies. Developing seismic fragility curves that accurately reflect their typological and structural features is essential to achieve this. In this context, the paper compares two different mechanical-analytical methods, namely the “DBV-Masonry” and “Firstep-M_PRO”, which have been independently developed at the University of Genoa and at the University of Trieste, respectively. Among various possible methods, the mechanical-analytical approach is chosen for its computational efficiency in assessing large portfolios and its flexibility in capturing the features of specific buildings, such as schools (i.e. significant inter-storey height and spacing between internal transversal walls). Both methods are applied to the same sample consisting of 101 unreinforced masonry (URM) schools located in the Friuli-Venezia Giulia region (Italy). One of key-goals of the paper is to provide a very comprehensive comparison of the similarities and differences between two methods for deriving seismic fragility curves which refer only to the global in-plane response. The impact of such an epistemic model uncertainty, together with the inter-building variability, is thus quantified and fragility curves are also validated against results from previous studies.</p></div>","PeriodicalId":9364,"journal":{"name":"Bulletin of Earthquake Engineering","volume":"23 6","pages":"2611 - 2646"},"PeriodicalIF":3.8,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10518-025-02137-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143861196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A framework for harmonized cross-border seismic risk assessment","authors":"Anže Babič,&nbsp;Maria Polese,&nbsp;Gabriella Tocchi,&nbsp;Marta Faravelli,&nbsp;Barbara Borzi,&nbsp;Matjaž Dolšek","doi":"10.1007/s10518-025-02130-z","DOIUrl":"10.1007/s10518-025-02130-z","url":null,"abstract":"<div><p>In transboundary areas, harmonizing risk assessment across borders is essential for effective risk management. However, differing methodologies for seismic risk assessment used by different countries can yield unequal results on either side of the border. This study presents a framework for harmonized cross-border time-based risk assessment, built upon established seismic risk assessment practices at the national level. The framework considers cross-border hazard, exposure, fragility, and consequence models, aiming to harmonize different data sources, methodologies, and models. An emphasis is given to a heuristic approach for the harmonization of fragility curves defined in the national fragility models. The proposed framework is implemented for the Italian-Slovenian cross-border region defined by municipalities near Gorizia and Nova Gorica. The results reveal differences in seismic risk levels between the building stocks on the Slovenian and Italian sides, primarily due to higher building density, seismic hazard, and vulnerability in Italy, while the seismic risk to people was observed to be nearly equal for urban centers like Gorizia and Nova Gorica. These findings can be used to design joint strategies for long-term risk management of the analysed cross-border region. However, further research is needed, particularly to overcome limitations related to the data sources of the exposure models and methodologies for fragility and consequence models, which can be addressed over a long period through systematic standardization of cross-border seismic risk assessment.</p></div>","PeriodicalId":9364,"journal":{"name":"Bulletin of Earthquake Engineering","volume":"23 6","pages":"2421 - 2449"},"PeriodicalIF":3.8,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10518-025-02130-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143861197","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structural modelling and probabilistic seismic assessment of existing long-span precast industrial buildings","authors":"Luca Capacci,&nbsp;Bruno Dal Lago","doi":"10.1007/s10518-025-02111-2","DOIUrl":"10.1007/s10518-025-02111-2","url":null,"abstract":"<div><p>Precast concrete frame structures constitute a major construction technology of the industrial built heritage within the Italian territory. Most of these buildings were conceived according to obsolete seismic design criteria with lower hazard than currently recognised standards, whilst the most industrialised areas spread over the Italian territory were declared seismically active since less than 20 years. This paper focuses on seismic performance assessment of long-span flat-roof industrial buildings, representative of modern design technologies. Buildings located in areas with increasing seismic hazard over the Italian territory were designed following an archetype existing building based on standards in force after 1996. Seismic performance is investigated by modal response analysis, non-linear static pushover analysis, and non-linear time-history analysis with a multi-stripe approach. The flexibility of the horizontal diaphragm and the interaction of the resisting frame with the cladding system are addressed by exploring progressively advanced modelling strategies up to a detailed assembly comprising roof members, peripheral panels, and all related connections. Mechanical non-linearities regarding column elements, dowel beam-to-column and slab-to-beam connections, strap tie-back and bracket bearing panel-to-frame connections are modelled with lumped plasticity employing experimentally calibrated constitutive laws. Seismic risk is assessed by estimating via multi-stripe analysis failure rates encompassing performance levels from usability preventing damage to global collapse. The results are site-dependent, and the need for retrofit of these typical precast systems is deemed to be urgent for both buildings designed in areas of average and high seismicity.</p></div>","PeriodicalId":9364,"journal":{"name":"Bulletin of Earthquake Engineering","volume":"23 6","pages":"2581 - 2609"},"PeriodicalIF":3.8,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143861287","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}