Soil Dynamics and Earthquake Engineering最新文献

{"title":"Seismic performance of wheat-silo-pile-soil interaction system implemented by a time staggered coupling of FEM and BEM","authors":"Xiaofei Qin ,&nbsp;Changnv Zeng ,&nbsp;Yong Lu","doi":"10.1016/j.soildyn.2025.109660","DOIUrl":"10.1016/j.soildyn.2025.109660","url":null,"abstract":"<div><div>The response of a column-supported wheat silo to earthquake ground motions is complicated by the nonlinear behaviour of the silo-column structure and the interaction of the pile-soil system. A three-dimensional dynamic wheat-silo-pile-soil (WSPS) interaction modelling framework is developed using a novel and highly efficient time staggered coupling of FEM and time-domain BEM (TD-BEM) methods. Based on the time staggered coupling approach, the entire WSPS interaction system is divided into two sub-systems of wheat-silo-pile and soil. The nonlinear behaviours of wheat-silo-pile sub-system are simulated by the FEM, while the TD-BEM excels in accurately modelling seismic wave propagation in the soil sub-system with infinite extension. The key advantage of the presented time staggered coupling method lies in achieving significant computational efficiency by addressing the challenge of different time steps required for the wheat-silo-pile and soil sub-systems. Notably, this time staggered coupling method promotes efficient computation of complex multibody dynamic systems by separately solving the system equations of the FEM and TD-BEM at different time instants. Using the constructed WSPS modelling system, the interaction effects between the wheat-silo sub-system and the foundation under seismic actions are investigated. Furthermore, comparing to traditional dynamic analysis systems for wheat silos, the characteristic responses of WSPS systems in different silo filling states and with different pile sections are examined. Results indicated that there is considerable scope of balancing the stiffness and the selection of pile types in the seismic design of silos in soft soil regions to improve the seismic performance of the WSPS systems.</div></div>","PeriodicalId":49502,"journal":{"name":"Soil Dynamics and Earthquake Engineering","volume":"199 ","pages":"Article 109660"},"PeriodicalIF":4.2,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144604331","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":"Simplified procedure for estimating liquefaction-induced settlement","authors":"Misko Cubrinovski,&nbsp;Riwaj Dhakal","doi":"10.1016/j.soildyn.2025.109626","DOIUrl":"10.1016/j.soildyn.2025.109626","url":null,"abstract":"<div><div>A simplified procedure for estimating liquefaction-induced settlement is proposed within the conventional liquefaction analysis framework. Closed-form solutions and approximate methods for computing volumetric, shear-induced and ejecta-related settlements for level ground and shallow foundations are presented. The proposed approach aims to facilitate engineering assessment of liquefaction-induced settlement by placing greater focus on the: (a) engineering interpretation of computed settlements; (b) holistic evaluation of the response over a wide range of ground motion intensities; (c) identification of key variables that most significantly influence the settlement response; and (d) consideration of uncertainties in the estimates. The procedure is applicable to all types of liquefiable deposits and has accuracy consistent with the conventional simplified liquefaction analysis methodology.</div></div>","PeriodicalId":49502,"journal":{"name":"Soil Dynamics and Earthquake Engineering","volume":"199 ","pages":"Article 109626"},"PeriodicalIF":4.2,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144588496","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":"Bayesian framework for evaluating spatial distribution of soil liquefaction based on CPT data","authors":"Huajian Yang,&nbsp;Xinhua Xue","doi":"10.1016/j.soildyn.2025.109657","DOIUrl":"10.1016/j.soildyn.2025.109657","url":null,"abstract":"<div><div>The change in density of saturated soil and the critical state reached during shear failure are key to understanding soil liquefaction behaviour, and the state parameter (<span><math><mrow><mi>ψ</mi></mrow></math></span>), which is based on the framework of critical state soil mechanics considering the influences of sandy soil compactness and confining stress effects, has significant advantages for soil liquefaction analysis. While assessing the spatial distribution of site's liquefaction potential usually involves the establishment of semi-empirical or stochastic models (e.g., random fields) of <span><math><mrow><mi>ψ</mi></mrow></math></span>, whose inherent spatial variability and various uncertainties are unavoidable. In this study, an in-situ <span><math><mrow><mi>ψ</mi></mrow></math></span>-based Bayesian updating (ISP-BU) approach was proposed for evaluating the spatial distribution of soil liquefaction potential. It consists of (i) the ISP-BU framework for sequential updating of semi-empirical models and data information obtained from field tests, including site-specific prior knowledge and cone penetration test (CPT) data; (ii) 2D random field interpretation and evaluation of the spatial distribution of liquefaction potential based on sparse in-situ <span><math><mrow><mi>ψ</mi></mrow></math></span> data; and (iii) simultaneously incorporating the spatial variability, uncertainties, and measurement errors in a reasonable and quantifiable manner into the probabilistic characterization of the spatial distribution of liquefaction potential. This study uses real-life CPT measurement data for illustration and validation. The results show that the proposed method is a universal modelling framework and can be widely applied in areas with soil liquefaction potential according to the requirements of different risk projects.</div></div>","PeriodicalId":49502,"journal":{"name":"Soil Dynamics and Earthquake Engineering","volume":"199 ","pages":"Article 109657"},"PeriodicalIF":4.2,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144580644","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":"Study on dynamic characteristics of cement-modified red mud-based silty soil under traffic load","authors":"Pengfei Liu ,&nbsp;Song Yin ,&nbsp;Siyue Zheng ,&nbsp;Xianwei Zhang ,&nbsp;Zhiliu Wang ,&nbsp;Xinming Li","doi":"10.1016/j.soildyn.2025.109650","DOIUrl":"10.1016/j.soildyn.2025.109650","url":null,"abstract":"<div><div>This study conducted dynamic hollow cylinder tests on cement-modified red mud-based fine sand soil (C-RMS) with the optimal proportion to broaden the resource utilization channels of red mud-based modified materials. The influences of various dynamic factors on the dynamic stress-strain relationship, cumulative plastic strain (<em>ε</em>_a), dynamic elastic modulus (<em>E</em>_d), and damping ratio (<em>ξ</em>) of C-RMS were studied. The research found that the dynamic stress-strain relationship of C-RMS has obvious nonlinearity and strain accumulation characteristics. The increase in the cyclic stress ratio (CSR) leads to the acceleration of strain development and the reduction of stability. The cyclic torsional shear stress ratio (<em>η</em>) significantly changes the displacement speed and shape of the stress-strain hysteresis curve. CSR has a significant impact on the development rate of <em>ε</em>_a, and CSR = 0.4 is the turning point at which C-RMS's resistance to deformation changes. The development rate of <em>ε</em>_a increases after CSR &gt;0.4, indicating a nonlinear relationship between CSR and cumulative plastic deformation. Compared with CSR, <em>η</em> has a more significant impact on <em>ε</em>_a, <em>E</em>_d, and <em>ξ</em> of C-RMS. The increase of <em>η</em> leads to the increase of <em>ε</em>_a, the accelerated attenuation of <em>E</em>_d, and the <em>ξ</em> value is inversely proportional to the <em>η</em> value. The increase of vibration frequency (<em>f</em>) leads to the decrease of εa and the increase of <em>E</em>_d of C-RMS, indicating that the sample's resistance to deformation increases at high frequencies. The <em>ε</em>_a under the heart-shaped stress path is significantly higher than that under the triaxial stress path, and the constant ratio of cumulative strain is far greater than 1, showing the significant influence of the rotation of the principal stress axis on the accumulation of plastic strain.</div></div>","PeriodicalId":49502,"journal":{"name":"Soil Dynamics and Earthquake Engineering","volume":"198 ","pages":"Article 109650"},"PeriodicalIF":4.2,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144579838","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":"Effect of static shear stress on the cyclic liquefaction of anisotropic sands: a DEM study","authors":"An Zhang ,&nbsp;Dong Wang","doi":"10.1016/j.soildyn.2025.109659","DOIUrl":"10.1016/j.soildyn.2025.109659","url":null,"abstract":"<div><div>To investigate the combined effects of static shear stress and fabric anisotropy on the liquefaction behavior of sand, a series of undrained cyclic triaxial tests were simulated using the Discrete Element Method. These simulations were performed on both vertical and horizontal specimens under a broad range of compressional and extensional static shear stresses. The results show that vertical specimens are more prone to liquefaction under negative static shear stress, while horizontal specimens tend to liquefy faster under positive static shear stress. Increasing static shear stress generally biases strain development towards compression, a trend that is more pronounced in horizontal specimens, which can be closely related to the orientation of the contact normal fabric relative to the loading direction. The redundancy index can serve as a reliable micro-indicator of liquefaction under various static shear stress conditions, independent of initial anisotropy. Initial liquefaction can occur during either loading or unloading, depending on the static shear stress. But it consistently occurs when the Fabric Anisotropy Variable of the contact normals transitions from negative to zero, typically following a preceding shearing stage during which the orientation of the contact normal fabric reverses. To account for the combined effects of static shear stress and fabric anisotropy, a joint invariant incorporating a static shear stress ratio tensor and the contact normal-based deviatoric fabric tensor is defined. The number of cycles to failure shows a nearly unique relationship with this joint invariant for both vertical and horizontal specimens.</div></div>","PeriodicalId":49502,"journal":{"name":"Soil Dynamics and Earthquake Engineering","volume":"199 ","pages":"Article 109659"},"PeriodicalIF":4.2,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144580642","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":"Effectiveness of MTMD for jacket offshore platform under wave and earthquake excitations","authors":"Shutong Liu ,&nbsp;Xunhe Yin ,&nbsp;Haochen Li ,&nbsp;Jingchao Yang ,&nbsp;Peizhen Li ,&nbsp;Peng Li","doi":"10.1016/j.soildyn.2025.109654","DOIUrl":"10.1016/j.soildyn.2025.109654","url":null,"abstract":"<div><div>Jacket offshore platforms are among the most prevalent structural types in ocean engineering. Multiple tuned mass dampers (MTMD) show great potential for mitigating the dynamic responses of these platforms. However, research on the vibration control capabilities of MTMD for jacket offshore platforms, especially considering soil-structure interaction (SSI), remains limited. This study comprehensively investigates the effectiveness of MTMD by modeling the dynamic response of a standard four-legged jacket offshore platform, incorporating SSI effects under both wave and seismic excitations. Firstly, a reliable numerical model of the soil-jacket offshore platform-MTMD system is established, and the total horizontal wave force is validated based on the Morrison equation. Then, the vibration mitigation effects of MTMD with varying frequencies, mass, and numbers of TMDs are compared for both the equivalent pile and SSI cases. Finally, the impacts of MTMD parameters and external load characteristics on the control performance of MTMD are further analyzed. The results demonstrate that MTMD can significantly reduce the dynamic response of the jacket offshore structure. Nevertheless, SSI effects diminish the mitigation performance of MTMD. For the target structure, the optimal frequency bandwidth of MTMD is centered at 0 for the equivalent pile model, while it shifts slightly to 0.1 for the SSI case, and the control effects of MTMD are satisfactory when the number of TMDs is four. Moreover, under SSI conditions, MTMD exhibits superior robustness in vibration control compared to a single tuned mass damper.</div></div>","PeriodicalId":49502,"journal":{"name":"Soil Dynamics and Earthquake Engineering","volume":"199 ","pages":"Article 109654"},"PeriodicalIF":4.2,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144580643","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 and numerical study of the hybrid hydraulic damper with independent performance in tensile and compressive for improving the seismic performance of braced structures","authors":"Hassan Moghaddam,&nbsp;Mohsen Zare Golmoghany","doi":"10.1016/j.soildyn.2025.109644","DOIUrl":"10.1016/j.soildyn.2025.109644","url":null,"abstract":"<div><div>In this article, a hydraulic damper is introduced to improve the seismic performance of braced structures and control the buckling of braces. This damper consists of a double-acting hydraulic jack, a one-way valve, and a high-stiffness spring, enabling independent operation in both tension and compression. The Hydraulic Damper with Independent Tension and Compression (HDITC) has high initial stiffness and operates based on a hybrid mechanism dependent on displacement and velocity. Damper combination with brace and its independent action, in compression the damper can dissipate energy up to the buckling force of the brace and, in tension, up to the yield force of the brace. To evaluate the cyclic performance of the damper, a laboratory test was developed, and the numerical modeling of the damper was investigated. The HDITC damper has a stable performance similar to the combination of friction damper and viscous damper behavior and effectively producing a full hysteretic behavior under various asymmetric tensile and compressive forces. To investigate how the new damper improves brace behavior, the cyclic behavior of the brace with and without the damper was examined. The results indicated that the use of the damper can increase energy dissipation by up to 7.2 times, depending on the slenderness ratio of the brace. Finally, the seismic behavior of a special braced and buckling restrained frame under earthquake and aftershock excitation was studied, demonstrating that the use of the damper can effectively reduce seismic damage.</div></div>","PeriodicalId":49502,"journal":{"name":"Soil Dynamics and Earthquake Engineering","volume":"199 ","pages":"Article 109644"},"PeriodicalIF":4.2,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144580640","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":"A semi-analytical solution for vertical dynamic response of noncircular piles in layered viscoelastic soils","authors":"Hang Zhou ,&nbsp;Yisheng Wang ,&nbsp;Hanlong Liu ,&nbsp;Jianxin Wang ,&nbsp;Chunyong Jiang","doi":"10.1016/j.soildyn.2025.109656","DOIUrl":"10.1016/j.soildyn.2025.109656","url":null,"abstract":"<div><div>The vertical dynamic response of noncircular piles in viscoelastic soil is investigated by developing an interaction model between the noncircular piles and the viscoelastic soil in this paper. The differential equations of the soil and pile displacement functions are derived through variational calculus and Hamilton's principle, assuming the noncircular pile displacement function and the soil displacement field The pile-soil interaction problem under vertical dynamic loading is formulated as a coupled solution involving both an ordinary differential equation (ODE) and a partial differential equation (PDE). A novel computation method for the coupled ODE and PDE are presented, resulting in the numerical solution for the dynamic response of noncircular piles. The reliability of this method is validated through comparisons with analytical solutions from existing studies. Furthermore, parametric analyses are conducted separately in the high-frequency and low-frequency ranges to investigate the effects of pile cross-section shape, pile-soil relative modulus, slenderness ratio, soil modulus distribution, and layered soil thickness on the vertical dynamic response of noncircular piles. It is indicated that the impact of the aforementioned parameters on the vertical dynamic response of noncircular piles is frequency-dependent.</div></div>","PeriodicalId":49502,"journal":{"name":"Soil Dynamics and Earthquake Engineering","volume":"199 ","pages":"Article 109656"},"PeriodicalIF":4.2,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144580641","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":"Seismic performance of utility tunnel and internal pipeline system based on fuzzy probability analysis","authors":"Jinqiang Li ,&nbsp;Hong Hao ,&nbsp;Zilan Zhong ,&nbsp;Yuebo Shi ,&nbsp;Xiuli Du","doi":"10.1016/j.soildyn.2025.109607","DOIUrl":"10.1016/j.soildyn.2025.109607","url":null,"abstract":"<div><div>This study proposes a fuzzy seismic fragility analysis method to address the limitations of using single Engineering Demand Parameters (<em>EDP</em>s) and the limited consideration of uncertainties in damage state thresholds in seismic assessments of underground structures. An analysis was conducted on a utility tunnel and internal pipeline system embedded in site of type II soil, as defined by Chinese code, using Incremental Dynamic Analysis (IDA). The maximum joint opening of utility tunnel and maximum strain of internal pipeline were selected as the <em>EDP</em>s. Fuzzy fragility curves were developed for both single (tunnel or pipeline) and multiple <em>EDP</em>s (tunnel and pipeline). The proposed method incorporates triangular and quasi-normal membership functions to account for fuzzy damage thresholds, combined with entropy weighting and traditional probability calculation methods. Results demonstrate that incorporating fuzzy damage thresholds significantly influences the shape of fragility curves, increasing failure probabilities for minor damage while reducing those for moderate damage. As for extensive damage, it varies among different components. Despite these variations, the choice of membership function form has a negligible impact on fragility results, with differences remaining within 10 %. Furthermore, the integration of multiple <em>EDP</em>s enhances the robustness and comprehensiveness of fragility analysis, particularly when the reliability of a single <em>EDP</em> is uncertain. These findings highlight the importance of considering fuzzy damage thresholds and multiple <em>EDP</em>s to improve the accuracy and reliability of seismic fragility evaluations for underground utility tunnels and pipeline systems.</div></div>","PeriodicalId":49502,"journal":{"name":"Soil Dynamics and Earthquake Engineering","volume":"198 ","pages":"Article 109607"},"PeriodicalIF":4.2,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144570310","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":"A novel framework for optimal selection of vector-valued intensity measures under mainshock-aftershock sequences considering uncertainties and multi-criteria correlation","authors":"Xu Bao ,&nbsp;Kaiwen Xu ,&nbsp;Zhen Li ,&nbsp;Lu Jin ,&nbsp;Dake Tian ,&nbsp;Bingfeng Zhao","doi":"10.1016/j.soildyn.2025.109655","DOIUrl":"10.1016/j.soildyn.2025.109655","url":null,"abstract":"<div><div>An optimal intensity measure (IM) can effectively describe the damage potential of ground motions and accurately reflect the relationship between structural responses and seismic parameters, which plays a vital role in earthquake engineering. Although numerous studies have examined ideal IMs for mainshocks, there is limited research on the potential effect of aftershocks on the IM selection. This paper proposes a multi-criteria decision-making (MCDM) framework that addresses the optimal selection of vector-valued <strong>IM</strong>s for seismic sequences by considering uncertainties and multi-criteria correlation. In this framework, to capture the nonlinear relationship between vector-valued <strong>IM</strong>s and multivariate engineering demand parameters (EDPs), several novel evaluation criteria are introduced to measure the comprehensive performance of mainshock-aftershock IM vectors. The performance criteria of each vector-valued <strong>IM</strong> candidate are then treated as a rough concept to handle uncertainties within the selection process. Finally, an advanced selection method is proposed to identify the appropriate alternative in a rough context, which can consider interdependencies among multiple criteria and avoid subjective judgment. The proposed framework is illustrated on reinforced concrete (RC) frame structures, and the effects of the number of aftershocks and the size of IM vectors are investigated to provide further guidance for the <strong>IM</strong> selection. The results provide valuable insights into the optimal selection of vector-valued <strong>IM</strong>s in the mainshock-aftershock scenario.</div></div>","PeriodicalId":49502,"journal":{"name":"Soil Dynamics and Earthquake Engineering","volume":"198 ","pages":"Article 109655"},"PeriodicalIF":4.2,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144570309","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}