Soil Dynamics and Earthquake Engineering最新文献_第5页

Dynamic behavior and deformation mechanisms of sand-silt stratified soil under intermittent cyclic loading 周期性循环荷载作用下砂粉层状土动力特性及变形机制

IF 4.2 2区工程技术

Soil Dynamics and Earthquake Engineering Pub Date : 2025-05-17 DOI: 10.1016/j.soildyn.2025.109509

Sen Wen , Xiaohang Wei , Guilin Sheng , Xiaohui Ni

{"title":"Dynamic behavior and deformation mechanisms of sand-silt stratified soil under intermittent cyclic loading","authors":"Sen Wen , Xiaohang Wei , Guilin Sheng , Xiaohui Ni","doi":"10.1016/j.soildyn.2025.109509","DOIUrl":"10.1016/j.soildyn.2025.109509","url":null,"abstract":"<div><div>Subway subgrades typically consist of alternating deposits of soil layers with significantly different physical and mechanical properties. However, the overall dynamic characteristics and the evolution of micro‐porous structures in stratified soils is often overlooked in current studies. In this study, cyclic triaxial tests were conducted on homogeneous sand, silt and stratified soils with different height ratios, and nuclear magnetic resonance (NMR) was used to investigate the changes in pore structure and moisture content. The dynamic behavior and macroscopic deformation mechanisms were systematically investigated in terms of stress amplitude, confining pressure, and layer height ratio (the ratio of sand to silt height). The results show that as the sand height ratio increases, the axial strain and pore water pressure first increase and then decrease, reaching the maximum when <em>h</em><sub>Sand</sub>: <em>h</em><sub>Silt</sub> = 2:1. When the confining pressure is 100 kPa, the axial strain of <em>h</em><sub>Sand</sub>: <em>h</em><sub>Silt</sub> = 2:1 is 181.08 % higher than that of silt. Under the dynamic loading, the stratified soils form a dense skeletal structure near the stratification plane, which hinders the flow and dissipation of pore water, so that the pore water agglomeration phenomenon occurs near the stratification plane, which aggravates the accumulation of residual pore pressure and reduces the deformation resistance. However, when <em>h</em><sub>Sand</sub>: <em>h</em><sub>Silt</sub> = 4:1, the influence of the stratification planes is significantly reduced, and the deformation characteristics approach homogeneity. This study reveals the dynamic characteristics of stratified soils by comparing and analysing homogeneous samples.</div></div>","PeriodicalId":49502,"journal":{"name":"Soil Dynamics and Earthquake Engineering","volume":"196 ","pages":"Article 109509"},"PeriodicalIF":4.2,"publicationDate":"2025-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144069850","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}

引用次数: 0

Dynamic and pseudo-static analysis of shield tunnels in liquefiable ground with nearby aboveground structures 可液化地面附近有地上构筑物的盾构隧道动、拟静力分析

IF 4.2 2区工程技术

Soil Dynamics and Earthquake Engineering Pub Date : 2025-05-16 DOI: 10.1016/j.soildyn.2025.109517

Tong Zhu , Meng-Xiong Tang , Junguang Huang , Jian-Min Zhang , Rui Wang

{"title":"Dynamic and pseudo-static analysis of shield tunnels in liquefiable ground with nearby aboveground structures","authors":"Tong Zhu , Meng-Xiong Tang , Junguang Huang , Jian-Min Zhang , Rui Wang","doi":"10.1016/j.soildyn.2025.109517","DOIUrl":"10.1016/j.soildyn.2025.109517","url":null,"abstract":"<div><div>The shield tunnel is one of the most prevalent types of urban underground tunnels, which frequently traverses liquefiable ground and comes in vicinity of aboveground structures, presenting substantial challenges for their seismic performance. This study employs high-fidelity dynamic numerical analysis and simplified pseudo-static analysis for shield tunnels with and without nearby aboveground structures in liquefiable ground, to identify the effect of aboveground structures on shield tunnel response, and propose a practical seismic analysis method for shield tunnels that can consider the influence of aboveground structures. In dynamic analysis, a plasticity constitutive model is employed to simulate liquefiable soil, and a modeling method capable of depicting the reinforced concrete segments and joints is employed to simulate shield tunnels. Results indicate that aboveground structures have a substantial influence on shield tunnels, which requires sufficient consideration in seismic design. An aboveground structure located directly over the tunnel can affect the shield tunnel's vertical displacement, lateral compressive deformation, joint deformation, and internal force. An aboveground structure located over to the side of the tunnel can affect the shield tunnel's horizontal displacement, rotation, racking deformation, joint deformation, and internal force. The traditional displacement-based pseudo-static analysis method is shown to perform poorly in evaluating in seismic response of shield tunnels in liquefiable ground with nearby aboveground structures, due to inadequate consideration for the complexities of structure-soil-tunnel interaction. A modified simplified method is proposed to account for the influence of liquefiable soil and aboveground structures based on the understanding of seismic behavior of the system.</div></div>","PeriodicalId":49502,"journal":{"name":"Soil Dynamics and Earthquake Engineering","volume":"196 ","pages":"Article 109517"},"PeriodicalIF":4.2,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144069851","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}

引用次数: 0

An alternate perspective on the critical orientation of horizontal pair of seismic excitations: Theory and illustrations 关于水平地震激励对临界方向的另一种观点：理论与实例

IF 4.2 2区工程技术

Soil Dynamics and Earthquake Engineering Pub Date : 2025-05-16 DOI: 10.1016/j.soildyn.2025.109519

Falak Vats, Dhiman Basu

{"title":"An alternate perspective on the critical orientation of horizontal pair of seismic excitations: Theory and illustrations","authors":"Falak Vats, Dhiman Basu","doi":"10.1016/j.soildyn.2025.109519","DOIUrl":"10.1016/j.soildyn.2025.109519","url":null,"abstract":"<div><div>This paper enhances the understanding of critical orientation (that maximizes the response of an EDP over all possible orientations) for horizontal ground motion pairs when applied to the base of a structure. Given that any structural response comprises the contributions from individual modes, even under inelastic excursion, the maximization of modal responses for the first few modes would be sufficient to define the critical orientation for most of the EDPs. In line with this, the theoretical background to establish a concept of modal orientation is presented in this paper. The analysis for the modal response of a building against a pair of orthogonal horizontal excitations is theoretically equivalent to the analysis against the associated single component representation along this orientation. The orientation of the same single-component representation that maximizes the associated oscillator's response is termed as the spectral orientation. The critical orientation is proven to be the difference between the modal and spectral orientations. In line with this, a recommendation is proposed for critical orientation regardless of the EDPs, which is expected to capture most of the EDPs, if not all. Although this development is based on linear analysis, it is demonstrated to be applicable to buildings undergoing inelastic excursion under moderate-to-strong shaking. These recommendations are based on four numerical examples involving symmetric and unsymmetric buildings subjected to individual horizontal pairs of ground motions and also a suite of ground motions. The proposed recommendations on critical orientation should be incorporated into seismic design and performance assessment practices.</div></div>","PeriodicalId":49502,"journal":{"name":"Soil Dynamics and Earthquake Engineering","volume":"196 ","pages":"Article 109519"},"PeriodicalIF":4.2,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144069050","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}

引用次数: 0

Vibration of inclined piles in transversely isotropic soils 横向各向同性土中斜桩的振动

IF 4.2 2区工程技术

Soil Dynamics and Earthquake Engineering Pub Date : 2025-05-16 DOI: 10.1016/j.soildyn.2025.109511

Hamed Moghaddasi , Babak Shahbodagh , Ali Khojasteh , Mohammad Rahimian

{"title":"Vibration of inclined piles in transversely isotropic soils","authors":"Hamed Moghaddasi , Babak Shahbodagh , Ali Khojasteh , Mohammad Rahimian","doi":"10.1016/j.soildyn.2025.109511","DOIUrl":"10.1016/j.soildyn.2025.109511","url":null,"abstract":"<div><div>This paper studies the dynamic behavior of inclined piles in transversely isotropic soils using a hybrid analytical-numerical approach. Inclined piles subjected to various vibration modes are modeled using the three-dimensional dynamic Bernoulli-Euler beam theory. The dynamic interaction between the inclined piles and the surrounding transversely isotropic soil is represented by a series of rigid radiation discs defined at the nodal points of the beam elements. The Green's functions governing the dynamic response of the radiation discs embedded in the transversely isotropic medium are derived using complete potential functions. The Green's functions fully satisfy the regularity conditions at infinity, eliminating the spurious wave reflections within the domain, addressing a major challenge in most numerical methods for dynamic soil-pile interactions. The dynamic impedance functions for inclined piles are determined, and the coupled influence of various parameters, including pile inclination angle, soil anisotropy, and excitation frequency on the dynamic pile-soil interaction is highlighted. The dynamic interaction factors for inclined piles embedded in transversely isotropic soils are also presented, essential for the design and analysis of pile groups subjected to vibrations.</div></div>","PeriodicalId":49502,"journal":{"name":"Soil Dynamics and Earthquake Engineering","volume":"196 ","pages":"Article 109511"},"PeriodicalIF":4.2,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144069051","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}

引用次数: 0

Seismic protection of coupled wall structures using viscously damped coupling beams: Experimental and numerical investigations 采用粘滞阻尼耦合梁的耦合墙结构抗震：试验和数值研究

IF 4.2 2区工程技术

Soil Dynamics and Earthquake Engineering Pub Date : 2025-05-15 DOI: 10.1016/j.soildyn.2025.109510

Zheng Luo , Jianyang Xue , Yan Sui , Chengyu Bai , Renmeng Yang , Liangjie Qi

{"title":"Seismic protection of coupled wall structures using viscously damped coupling beams: Experimental and numerical investigations","authors":"Zheng Luo , Jianyang Xue , Yan Sui , Chengyu Bai , Renmeng Yang , Liangjie Qi","doi":"10.1016/j.soildyn.2025.109510","DOIUrl":"10.1016/j.soildyn.2025.109510","url":null,"abstract":"<div><div>This paper presents a novel seismic damping solution installing viscous dampers into coupling beams, namely the Viscously Damped Coupling Beam (VDCB). Leveraging the bending deformation of wall piers, the VDCB enables efficient energy dissipation without occupying the building's interior space, mitigates structural damage, and eliminates the need for post-earthquake repairs. The hysteretic behaviour of the proposed VDCB was investigated through dynamic cyclic loading tests, confirming its stable energy dissipation capacity and the formation of parallelogram-shaped hysteresis loops that expand with increasing load amplitude and frequency. Moreover, a floating slab configuration was found to reduce slab damage compared to the tightly connected slab. A parametric study using time-history analysis showed that increasing the damping coefficient (<em>C</em>) of VDCBs reduces the peak inter-storey drift ratio (<em>θ</em><sub>peak</sub>) and peak base shear (<em>V</em><sub>peak</sub>) of coupled wall structures, though the benefit stabilises at high <em>C</em>, and excessive damping may raise <em>V</em><sub>peak</sub>. The VDCBs promotes dynamic coupling between wall piers, ensuring effective collaboration across a range of earthquake intensities. A design approach for determining parameters of VDCBs has been proposed. The optimally designed VDCBs achieved reductions of approximately 30 % in <em>θ</em><sub>peak</sub> and <em>V</em><sub>peak</sub>, as well as a 20 % reduction in peak floor accelerations (PFA). The proposed VDCB effectively mitigates seismic damage to walls and coupling beams, thereby enhancing structural seismic resilience.</div></div>","PeriodicalId":49502,"journal":{"name":"Soil Dynamics and Earthquake Engineering","volume":"196 ","pages":"Article 109510"},"PeriodicalIF":4.2,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143947547","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}

引用次数: 0

A computational framework for site-city interaction analysis considering seismic wave propagation effects and its application to Beijing CBD 考虑地震波传播效应的地城相互作用分析计算框架及其在北京CBD的应用

IF 4.2 2区工程技术

Soil Dynamics and Earthquake Engineering Pub Date : 2025-05-14 DOI: 10.1016/j.soildyn.2025.109492

Yuan Tian, Simeng Liu, Siying Chen, Zhen Xu

{"title":"A computational framework for site-city interaction analysis considering seismic wave propagation effects and its application to Beijing CBD","authors":"Yuan Tian, Simeng Liu, Siying Chen, Zhen Xu","doi":"10.1016/j.soildyn.2025.109492","DOIUrl":"10.1016/j.soildyn.2025.109492","url":null,"abstract":"<div><div>Earthquake waves are generated by fault rupture, propagate through rocks and soil layers to local sites, and then excite buildings on the site. The densely distributed buildings will interact with the site and each other (site-city interaction effects, SCI effects), altering the dynamic responses of the site and the propagation process of earthquake waves. Therefore, the actual seismic motions experienced by urban building clusters are the result of the combined effects of SCI effects and earthquake wave propagation effects (such as rupture directivity effects, traveling wave effects, topographic effects, etc.). This paper proposes a computational framework for site-city interaction analysis considering seismic wave propagation effects based on the domain reduction method and nonlinear numerical coupling scheme. Taking the 2021 buildings in the Beijing central business district (CBD) as an example, the paper analyzes the influence of different building clusters on the responses of the site and building clusters under the Sanhe-Pinggu earthquake. The research results indicate that building clusters significantly affect both the site and the responses of surrounding buildings, with an influence extending over 200 m, warranting close attention.</div></div>","PeriodicalId":49502,"journal":{"name":"Soil Dynamics and Earthquake Engineering","volume":"196 ","pages":"Article 109492"},"PeriodicalIF":4.2,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143947546","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}

引用次数: 0

Performance of microbial induced partial saturation for liquefaction mitigation in sands containing plastic and non-plastic fines 含塑性和非塑性细粒砂中微生物诱导的部分饱和液化减缓性能

IF 4.2 2区工程技术

Soil Dynamics and Earthquake Engineering Pub Date : 2025-05-10 DOI: 10.1016/j.soildyn.2025.109494

Maya Norris, Ali Farahani, Majid Ghayoomi

{"title":"Performance of microbial induced partial saturation for liquefaction mitigation in sands containing plastic and non-plastic fines","authors":"Maya Norris, Ali Farahani, Majid Ghayoomi","doi":"10.1016/j.soildyn.2025.109494","DOIUrl":"10.1016/j.soildyn.2025.109494","url":null,"abstract":"<div><div>The mitigation of seismic soil liquefaction in sand with fine content presents a challenge, demanding efficient strategies. This research explores the efficacy of Microbial-Induced Partial Saturation (MIPS) as a bio-geotechnical technique to improve the liquefaction resistance of sandy soils with plastic fines. By leveraging the natural metabolic processes of indigenous microorganisms, this method introduces biogenic gas production within the soil matrix, effectively reducing its degree of saturation. This partial desaturation alters the soil's response to cyclic loading, aiming to mitigate the risk of liquefaction under dynamic loading conditions. Experimental results from a series of undrained strain-controlled cyclic shear tests reveal that even a modest reduction in saturation significantly enhances the soil's stability against seismic-induced liquefaction. The investigation extends to analyzing the effectiveness of the MIPS treatment in sands with low-plasticity clay content, offering insights into the interaction between microbial activity, soil texture, and liquefaction potential. Results show that while plasticity plays a key role in improving the cyclic response of soils, the influence of MIPS treatment remains noteworthy, even in sand with plastic fines. Additionally, a modified predictive formulation is introduced, incorporating a calibrated parameter to account for the influence of fines' plasticity on excess pore pressure generation.</div></div>","PeriodicalId":49502,"journal":{"name":"Soil Dynamics and Earthquake Engineering","volume":"196 ","pages":"Article 109494"},"PeriodicalIF":4.2,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143928166","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}

引用次数: 0

The displacement response spectrum based on 2DOF system and its application in the DDBD of isolated railway bridges 基于二自由度系统的位移响应谱及其在隔离铁路桥梁DDBD中的应用

IF 4.2 2区工程技术

Soil Dynamics and Earthquake Engineering Pub Date : 2025-05-10 DOI: 10.1016/j.soildyn.2025.109483

Huihui Dong, Sen Yang, Xiuli Du, Qiang Han

{"title":"The displacement response spectrum based on 2DOF system and its application in the DDBD of isolated railway bridges","authors":"Huihui Dong, Sen Yang, Xiuli Du, Qiang Han","doi":"10.1016/j.soildyn.2025.109483","DOIUrl":"10.1016/j.soildyn.2025.109483","url":null,"abstract":"<div><div>The isolation bearings are widely applied in railway bridges to improve structural seismic performance. Each pier-isolation bearing-deck system in an isolated bridge could be simplified to a 2DOF system, since the significant pier mass and the stiffness discrepancy between the isolation bearing and the pier. This study develops a direct displacement-based design (DDBD) method for isolated railway bridges based on 2DOF response spectra. To fulfill the design process, a simplified model of a pier-isolation-deck equivalent 2DOF system (P-I-D system) is first proposed, and the analysis procedure of the average displacement response spectra of pier top (i.e., PDRS) and bearing (i.e., BDRS) of 2DOF system is established. Subsequently, the three seismic performance objectives related to the train running operation and structural safety are developed for isolated railway bridges at various seismic hazard levels. In this proposed design method, the damage levels of piers and deformation degrees of bearings are both optimized, to achieve the developed performance objectives. Finally, the design method is applied to a three-span railway simply supported bridge, and the effectiveness of the design method is verified. The analysis results indicate that this method minimized the displacement of bearings without altering the damage level of piers, and successfully achieved the design objectives.</div></div>","PeriodicalId":49502,"journal":{"name":"Soil Dynamics and Earthquake Engineering","volume":"196 ","pages":"Article 109483"},"PeriodicalIF":4.2,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143928167","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}

引用次数: 0

Shaking table test on a scaled 4-storey frame structure with vibration control system using pulley mechanism 采用滑轮机构振动控制系统的四层框架结构振动台试验

IF 4.2 2区工程技术

Soil Dynamics and Earthquake Engineering Pub Date : 2025-05-09 DOI: 10.1016/j.soildyn.2025.109489

Hao Sui, Ryo Majima, Taiki Saito

{"title":"Shaking table test on a scaled 4-storey frame structure with vibration control system using pulley mechanism","authors":"Hao Sui, Ryo Majima, Taiki Saito","doi":"10.1016/j.soildyn.2025.109489","DOIUrl":"10.1016/j.soildyn.2025.109489","url":null,"abstract":"<div><div>This study applied a novel seismic vibration control system that utilizes the pulley displacement amplification mechanism combined with a new rotary viscous damper to a scaled four-storey frame structure. By utilizing the cumulative amplified displacements of wires stretched across multiple storeys, the proposed system efficiently absorbs energy with damper, thereby maximizing its energy dissipation capacity. The constitutive model and equation of this pulley damper system was derived to account for the effects of pulley friction on the system's performance. A series of shaking table tests were conducted under four different scaled seismic wave excitations. The damping performance was evaluated by comparing the structural responses for various wire configurations and different numbers of wires under the same wire configuration. The experimental results confirmed the principle of displacement amplification through the pulley and wire system, demonstrating its effectiveness in amplifying structural displacements and transmitting them to the damper, thereby enhancing the damper's performance. Moreover, the findings indicated that the pulley damper system can significantly control the vibrations of the structure under seismic excitations. In most scenarios, the incorporation of both wires and dampers resulted in a reduction in the maximum displacement response by over 50 % compared to the uncontrolled case. Additionally, computer software analysis was performed to compare the analytical results with the experimental data, confirming the validity of modeling the wires as an equivalent truss constitutive model for multi-storey structures across different wire configurations.</div></div>","PeriodicalId":49502,"journal":{"name":"Soil Dynamics and Earthquake Engineering","volume":"196 ","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143921737","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}

引用次数: 0

Vibration isolation method based on local resonance mechanism for near-field piling in rail transport 基于局部共振机制的铁路运输近场桩的隔振方法

IF 4.2 2区工程技术

Soil Dynamics and Earthquake Engineering Pub Date : 2025-05-09 DOI: 10.1016/j.soildyn.2025.109465

Chun-Sheng Lu , Chun-Xu Qu , Ting-Hua Yi , Hong-Nan Li

{"title":"Vibration isolation method based on local resonance mechanism for near-field piling in rail transport","authors":"Chun-Sheng Lu , Chun-Xu Qu , Ting-Hua Yi , Hong-Nan Li","doi":"10.1016/j.soildyn.2025.109465","DOIUrl":"10.1016/j.soildyn.2025.109465","url":null,"abstract":"<div><div>Environmental vibration from rail transit significantly impacts the lives and livelihoods of people in adjacent areas. This paper proposes a four-component near-field piling vibration isolation method for rail transit based on the local resonance mechanism. It aims to address the issue of the limited distance between certain buildings and the vibration source, as well as the size constraints of piling in traditional isolation schemes. Firstly, the dispersion curve of the four-component periodic structure is derived using the plane wave expansion method, and the factors influencing the attenuation zone of the pile wave barrier are analyzed. Next, the effect of pile row count and pile length on the vibration isolation performance of the wave barrier is evaluated using a three-dimensional finite element model. Finally, the vibration isolation efficiency of the four-component periodic pile method is compared with that of the three-component and two-component methods. The results indicate that the vibration isolation effect of wave barriers improves with an increase in pile rows and lengths. Through comparison, it is found that the four-component periodic pile method exhibits higher vibration isolation efficiency than both the three-component and two-component periodic pile methods when wave barriers of comparable size are used. This approach reduces the required size of wave barriers and presents a novel solution for the vibration isolation in near-field rail transit piling.</div></div>","PeriodicalId":49502,"journal":{"name":"Soil Dynamics and Earthquake Engineering","volume":"196 ","pages":"Article 109465"},"PeriodicalIF":4.2,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143922140","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}

引用次数: 0