Geotextiles and Geomembranes最新文献_第2页

Sensing performance and mechanism of flexible sensing-enabled CB-CNT/PDMS geosynthetics for soil deformation monitoring 柔性传感CB-CNT/PDMS土工合成材料土壤变形监测的传感性能与机理

IF 6.2 1区工程技术 Q1 ENGINEERING, GEOLOGICAL

Geotextiles and Geomembranes

Pub Date : 2025-12-31 DOI: 10.1016/j.geotexmem.2025.12.007

Xinzhuang Cui , Shibao Lu , Xu Zhang , Qing Jin , Shiyuan Sun , Hui Li

Conventional soil deformation monitoring technologies often struggle to achieve distributed and high-precision measurements under large-strain conditions (>20 %), which are typical in geotechnical failures. To address this limitation, this study developed a novel flexible sensing-enabled geosynthetics material by incorporating a hybrid conductive filler system composed of carbon black (CB) and carbon nanotubes (CNT) into a polydimethylsiloxane (PDMS) matrix. Key fabrication parameters including the CB/CNT mass ratio, n-hexane dispersant content, and curing temperature were systematically optimized to enhance electrical conductivity and electromechanical response. The optimized composite exhibits excellent strain-sensing performance within the 0–20 % strain range, with a gauge factor (GF) of 2.453, a linear coefficient of determination (R²) of 0.972, and demonstrates outstanding signal stability and cyclic durability. Microstructural analyses revealed that the synergistic effect between CB and CNT facilitated the formation of a dense and stable conductive network, significantly improving sensing linearity and sensitivity. The feasibility of the material for practical application was validated through model tests on a sand foundation, where it accurately captured deformation patterns under various loading conditions. This work provides a reliable and sensitive flexible sensing solution for real-time monitoring of soil deformation, with broad potential in geotechnical health monitoring and early warning systems.

传统的土壤变形监测技术往往难以实现大应变条件下（> 20%）的分布和高精度测量，这在岩土工程破坏中是典型的。为了解决这一限制，本研究开发了一种新型的柔性传感土工合成材料，将由炭黑（CB）和碳纳米管（CNT）组成的混合导电填料系统整合到聚二甲基硅氧烷（PDMS）基体中。系统优化了炭黑/碳纳米管质量比、正己烷分散剂含量和固化温度等关键制备参数，以提高导电性能和机电响应。优化后的复合材料在0 ~ 20%应变范围内具有良好的应变传感性能，测量因子（GF）为2.453，线性决定系数（R2）为0.972，具有良好的信号稳定性和循环耐久性。微观结构分析表明，碳纳米管与碳纳米管之间的协同效应有助于形成致密稳定的导电网络，显著提高了传感线性度和灵敏度。通过砂基模型试验验证了该材料实际应用的可行性，该材料准确地捕捉了各种加载条件下的变形模式。该研究为实时监测土体变形提供了可靠、灵敏的柔性传感解决方案，在岩土健康监测和预警系统中具有广阔的应用前景。

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引用次数: 0

Improving the geotextile filter design criteria for internally unstable cohesionless soils 改进内不稳定无粘性土土工布过滤器设计标准

IF 6.2 1区工程技术 Q1 ENGINEERING, GEOLOGICAL

Geotextiles and Geomembranes

Pub Date : 2025-12-18 DOI: 10.1016/j.geotexmem.2025.12.004

Nicola Moraci , Stefania Bilardi , Maria Clorinda Mandaglio

The behaviour of a geotextile filter in contact with internally unstable cohesionless soils depends on interaction between filter pore size distribution and base soil particles and on fraction of particles free to move inside soil skeleton. These particles can accumulate at soil-filter interface leading to blinding or remain entrapped within filter pores leading to clogging or pass through geotextile. The openings of geotextile should allow the passing of soil particles not belonging to soil skeleton keeping the same stable to avoid base soil erosion and minimize the geotextile filter clogging and/or blinding. The upper limit of filter characteristic opening size meets requirement of retention criterion while the lower limit of filter avoids blinding and/or clogging phenomena. Among different geotextile filter design criteria for internally unstable cohesionless soils, Moraci (1996) criterion considers as lower limit of filtration opening size the critical diameter of suffusion. In this paper, a database of many soil-geotextile filtration tests, for which this criterion has not yet been tested, was created to assess its reliability, compared to other existing design criteria. Finally, a new methodology proposed recently by the Authors is also applied to evaluate internally unstable cohesionless soil-geotextile filter compatibility to all interfaces analysed in database.

土工布过滤器与内部不稳定的无黏性土壤接触时的行为取决于过滤器孔径分布与基土颗粒之间的相互作用以及在土壤骨架内自由移动的颗粒的比例。这些颗粒可以积聚在土壤-过滤器界面导致盲目或滞留在过滤器孔中导致堵塞或通过土工布。土工布的开口应允许不属于土骨架的土壤颗粒通过，保持相同的稳定性，以避免基层土壤侵蚀，并尽量减少土工布过滤器堵塞和/或盲目。滤波器特性开口尺寸的上限满足保留准则的要求，而滤波器的下限避免了盲目和/或堵塞现象。在不同的内不稳定无黏性土土工布过滤器设计准则中，Moraci（1996）准则将渗流临界直径作为滤孔尺寸的下限。在本文中，建立了一个数据库，其中包括许多尚未对该准则进行测试的土-土工织物过滤试验，以评估其与其他现有设计准则的可靠性。最后，本文还应用了作者最近提出的一种新方法来评价内部不稳定无粘性土-土工布滤料与数据库中分析的所有界面的兼容性。

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引用次数: 0

Synergistic effects of enzyme-induced carbonate precipitation (EICP) treatment and geogrid reinforcement on mechanical properties of washed recycled sand 酶促碳酸盐沉淀（EICP）处理和土工格栅加固对水洗再生砂力学性能的协同效应

IF 6.2 1区工程技术 Q1 ENGINEERING, GEOLOGICAL

Geotextiles and Geomembranes

Pub Date : 2025-12-14 DOI: 10.1016/j.geotexmem.2025.12.005

Lian Liang, Ming Huang, Mingjuan Cui, Chaoxian Wang

EICP and geogrids are widely regarded as environmentally sustainable and effective techniques for soil stabilization. This study assesses the feasibility of combining EICP with geogrid reinforcement to improve the mechanical properties of sands. The Brazilian splitting test and particle image velocimetry were employed to investigate the effects of three independent variables—the cementation–enzyme ratio (X₁), median particle size (X₂), and geogrid placement (X₃)—on the mechanical behavior of sand treated with both EICP and geogrid (STEG). Response surface methodology was used to assess variable interactions and optimize parameters for maximum tensile strength. The mechanism of reinforcement was further investigated through measurements of calcium carbonate content, permeability testing, ultrasonic velocity analysis, and scanning electron microscopy (SEM). Results show that the interactions between variables significantly influence the tensile strength and failure patterns of STEG. The optimal parameters (X₁ = 1:1.935, X₂ = 1.211 mm, X₃ = 1.2 cm) achieved a tensile strength of 1.71 MPa. Compared with specimens without geogrids, STEG samples demonstrated higher peak and residual strengths. SEM results revealed substantial calcium carbonate precipitation around geogrids, enhancing interparticle bonding, increasing ultrasonic velocity, and reducing permeability. These findings highlight the potential of combining EICP and geogrids to improve the mechanical properties of cohesionless soils, offering promising applications for subgrade reinforcement.

EICP和土工格栅被广泛认为是环境可持续和有效的土壤稳定技术。本研究评估了EICP与土工格栅加固相结合改善砂土力学性能的可行性。采用巴西劈裂试验和颗粒图像测速法研究了胶结酶比（X1）、中位粒径（X2）和土工格栅位置（X3）这三个自变量对EICP和土工格栅（STEG）处理砂的力学行为的影响。响应面法用于评估变量相互作用并优化参数以获得最大抗拉强度。通过碳酸钙含量测定、渗透性测试、超声速度分析和扫描电子显微镜（SEM）进一步研究了增强机理。结果表明，变量之间的相互作用对STEG的抗拉强度和破坏模式有显著影响。最佳参数（X1 = 1:1.935, X2 = 1.211 mm, X3 = 1.2 cm）的拉伸强度为1.71 MPa。与未加土工格栅的土工格栅相比，STEG土工格栅的峰值强度和残余强度更高。扫描电镜结果显示，土工格栅周围有大量碳酸钙沉淀，增强了颗粒间的结合，增加了超声波速度，降低了渗透性。这些发现突出了将EICP和土工格栅结合起来改善无黏性土壤力学性能的潜力，为路基加固提供了有希望的应用。

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引用次数: 0

Drainage performance for clay slopes with wicking tubes in seasonally frozen regions: Experiment and field monitoring 季节性冻土区粘土边坡吸湿管排水性能：试验与现场监测

IF 6.2 1区工程技术 Q1 ENGINEERING, GEOLOGICAL

Geotextiles and Geomembranes

Pub Date : 2025-12-11 DOI: 10.1016/j.geotexmem.2025.12.003

Zhimin Ma, Chuang Lin, Guanfu Wang, Decheng Feng, Feng Zhang

In seasonally frozen regions, spring thaw often destabilizes embankment slopes because excess moisture accumulates in the surface layers. Existing drainage systems are constrained by slow response times, particularly under unsaturated conditions. To address these challenges, this study proposes a seasonally frozen slope treatment method based on wicking geotextiles with active drainage capabilities. Comprehensive slope model tests were conducted under natural freeze-thaw and rainfall conditions to comparatively evaluate the drainage performance of wicking geotextiles against conventional alternatives. The results indicated that wicking geotextiles significantly enhanced lateral water migration, rapidly reduced soil moisture content under unsaturated conditions, and effectively prevented moisture accumulation during thawing and rainfall events. Subsequently, field case studies were conducted to assess the practical engineering performance by monitoring slope sections with and without wicking geotextile treatment. It further confirmed the superior drainage efficiency of wicking geotextiles, notably improving slope stability by mitigating moisture-induced shallow landslides during the spring thaw period. This study demonstrates the potential of wicking geotextiles as a practical engineering solution, providing valuable insights into slope stabilization technology in seasonally frozen regions.

在季节性冻土区，春季解冻常常使路基斜坡不稳定，因为表层积聚了过量的水分。现有的排水系统受到响应时间慢的限制，特别是在非饱和条件下。为了应对这些挑战，本研究提出了一种基于具有主动排水能力的吸湿土工布的季节性冻结边坡处理方法。在自然冻融和降雨条件下进行了综合边坡模型试验，对比评价了吸芯土工布与常规土工布的排水性能。结果表明，吸湿土工布显著增强了水分的横向迁移，在非饱和条件下迅速降低了土壤含水量，并有效地防止了融化和降雨过程中的水分积累。随后，进行了现场案例研究，通过监测有和没有吸芯土工布处理的边坡断面来评估实际工程性能。进一步证实了吸湿土工布优越的排水效率，通过减轻春季融雪期水分诱发的浅层滑坡，显著提高了边坡稳定性。这项研究证明了吸湿土工布作为一种实用的工程解决方案的潜力，为季节性冻结地区的边坡稳定技术提供了有价值的见解。

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引用次数: 0

Stress transfer mechanism of ground reinforcement embankments subjected to lateral rockfall impact 侧向落石冲击下地基加固路堤的应力传递机制

IF 6.2 1区工程技术 Q1 ENGINEERING, GEOLOGICAL

Geotextiles and Geomembranes

Pub Date : 2025-12-10 DOI: 10.1016/j.geotexmem.2025.12.002

Liang Lu , Haibo Zhu , Zongjian Wang , Chengkun Wu , Lanxing Li , Katsuhiko Arai

The stress transfer mechanism of ground reinforced embankments subjected to lateral rockfall impact is systematically investigated through full-scale tests, finite element simulations, and theoretical analysis, with a particular focus on the stress diffusion angle. The results indicate that the impact-induced stress propagated rapidly and attenuated with increasing distance from the impact point, with transmission most efficient in the direction of impact. Parametric analyses demonstrate that impact energy, reinforcement spacing, and soil friction angle significantly influenced stress dispersion, whereas the height-to-thickness ratio mainly affected wall deformation. It is found that a reinforcement spacing of 0.2 m yielded optimal performance in resisting rockfall impact. Furthermore, it is recommended that the height-to-thickness ratio of the embankment be limited to less than 2 to mitigate wall deformation and prevent rear extrusion under impact. A theoretical model for the stress diffusion angle is derived based on the conical stress diffusion theory, providing an explicit analytical expression for GREs under lateral rockfall impact. The proposed model shows satisfactory agreement with numerical results, with discrepancies below 15 %, thereby validating the reliability of the theoretical solution.

通过全尺寸试验、有限元模拟和理论分析，系统地研究了侧向落石冲击下地面加筋土路堤的应力传递机制，特别关注了应力扩散角。结果表明：冲击诱发应力的传播速度快，随距离冲击点的增加而衰减，在冲击方向上传播效率最高；参数分析表明，冲击能、配筋间距和土摩擦角对应力分散有显著影响，而高厚比主要影响墙体变形。研究发现，当加固间距为0.2 m时，抗落石冲击效果最佳。此外，建议将路堤的高厚比限制在2以下，以减轻墙的变形，防止冲击下的后挤压。基于锥形应力扩散理论，推导了应力扩散角的理论模型，给出了侧向岩崩冲击下应力扩散角的明确解析表达式。该模型与数值结果吻合较好，误差小于15%，从而验证了理论解的可靠性。

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引用次数: 0

Quantification of shear-induced wear development on textured geomembrane-geotextile interfaces 土工膜-土工织物界面剪切磨损发展的量化

IF 6.2 1区工程技术 Q1 ENGINEERING, GEOLOGICAL

Geotextiles and Geomembranes

Pub Date : 2025-12-09 DOI: 10.1016/j.geotexmem.2025.12.001

Gary John Fowmes , Catalin Alexandru Zaharescu , Zhiming Chao , Ahmad Mousa

The development of wear on the textured geomembrane interface has a significant influence on the reduction of post-peak interface shear strength. This study aims to examine and quantify the development of shear-driven wear on geosynthetic interfaces. New interfacial parameters are introduced to systematically describe the changes in the surface morphology of a geomembrane during the shearing process by combining quantitative and qualitative digital imaging techniques. Based on the developed surface roughness geometric parameters, an intensive quantitative and stereoscopic analysis of the wear development of the geomembrane surface morphology has been conducted during interfacial shear. The geometric parameters of the textured surface, namely asperity height, top angle, top radius, approach angle, and departure angle, can capture the changes in surface topography of the geomembrane in pre- and post-shearing. The top angle and radius, as well as the approach and departure angles, change significantly during the early stages of shearing (5 mm–20 mm). In general, the changes in the adopted geometric parameters resulted from a shearing rise associated with the increase in normal pressure. Furthermore, they could be used to better define the evolution of wear through complex stress histories that geomembranes frequently experience.

土工膜界面磨损的发展对峰后界面抗剪强度的降低有显著影响。本研究旨在研究和量化土工合成界面剪切驱动磨损的发展。采用定量与定性相结合的数字成像技术，引入新的界面参数，系统地描述了土工膜剪切过程中表面形貌的变化。基于已开发的表面粗糙度几何参数，对界面剪切过程中土工膜表面形貌的磨损发展进行了深入的定量和立体分析。纹理表面的几何参数，即凹凸高度、顶角、顶半径、接近角和出发角，可以捕捉到剪切前后土工膜表面形貌的变化。剪切初期（5 mm ~ 20 mm），顶角、半径、进近角和偏离角变化明显。总的来说，所采用几何参数的变化是由于与法向压力增加相关的剪切上升。此外，它们可以用来更好地定义土工膜经常经历的复杂应力历史的磨损演变。

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引用次数: 0

Cold temperature behaviour of polyethylene geomembranes 聚乙烯土工膜的低温性能

IF 6.2 1区工程技术 Q1 ENGINEERING, GEOLOGICAL

Geotextiles and Geomembranes

Pub Date : 2025-11-21 DOI: 10.1016/j.geotexmem.2025.11.002

M. Somuah, F.B. Abdelaal, R. Kerry Rowe

Impact and tensile tests were conducted on two high-density polyethylene (HDPE) geomembranes made from unimodal and bimodal resins, as well as a linear low-density polyethylene (LLDPE) geomembrane. This study investigates the ductile-to-brittle transition temperatures (DBTTs), energy-to-break (EtB, defined as the amount of energy required to cause a geomembrane specimen to either partially or fully fracture under impact test conditions). Of the three geomembranes, BMzA15 maintained the highest overall EtB values, followed closely by LxD15, and significantly above MxC15, over a range of temperatures (−60 °C–25 °C). Results showed that DBTT occurred between −16 °C and −27 °C, significantly above the glass transition temperature (Tg) of polyethylene. While higher molecular weight and lower density correlated with lower DBTT, no single resin property consistently predicted impact energy absorption below the DBTT. Additionally, surface flaws as shallow as 5 % of the geomembrane's nominal thickness shifted DBTT upward by nearly 18 °C, and reduced energy-to-break by about 33 %. These findings highlight the need for careful material selection, defect management, and load-rate consideration when selecting geomembranes for applications in cold environments.

对两种由单峰和双峰树脂制成的高密度聚乙烯（HDPE）土工膜以及一种线性低密度聚乙烯（LLDPE）土工膜进行了冲击和拉伸试验。本研究研究了土工膜在冲击试验条件下部分或完全断裂所需的能量，即韧性到脆性转变温度（dbtt）和断裂能量（EtB）。在三种土工膜中，BMzA15保持最高的总EtB值，其次是LxD15，并且在温度范围（- 60°C - 25°C）显著高于MxC15。结果表明，DBTT发生在- 16 ~ - 27℃之间，明显高于聚乙烯的玻璃化转变温度（Tg）。虽然较高的分子量和较低的密度与较低的DBTT相关，但没有单一树脂性能一致地预测低于DBTT的冲击能量吸收。此外，仅占土工膜标称厚度5%的表面缺陷使DBTT上升了近18°C，并减少了约33%的断裂能量。这些发现强调了在选择用于寒冷环境的土工膜时，需要仔细选择材料，缺陷管理和负载率考虑。

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引用次数: 0

Physical performance of flexible pavement system with and without a Portland-cement-concrete (PCC) slab for geofoam embankments 土工泡沫路堤有和没有波特兰水泥混凝土（PCC）板柔性路面系统的物理性能

IF 6.2 1区工程技术 Q1 ENGINEERING, GEOLOGICAL

Geotextiles and Geomembranes

Pub Date : 2025-11-20 DOI: 10.1016/j.geotexmem.2025.11.001

Emre Akınay , Hande Isik Ozturk , Abdullah Yasin Büyükaslan , Abdullah Tolga Özer

Pavement system design for geofoam block embankments requires special solution due to their low California Bearing Ratio (CBR) values. Hence, the use of a reinforced Portland-cement-concrete (PCC) slab atop the geofoam block assemblage is considered as a practical approach to increase the stiffness of the pavement. On the other hand, the PCC slab has some inherent disadvantages such as construction delay due to curing. A thicker pavement system without a PCC slab can be a potential alternative. Hence, the performance of flexible pavement systems with and without PCC slab were investigated using the accelerated pavement test (APT) program in detail. Two 3.75 m-wide and 10 m-long pavements were constructed in a test bed, and a controlled wheel load was applied using a 3-axle, 37.72-ton truck that traveled with an average speed of 16.5 km/h. The test was terminated, when rutting reached to steady deformation pattern at 1299 passes (3897 axle repetitions), which is equal to 20,264.4 equivalent single axle loads (ESAL). The test program also included plate load tests (PLT) and falling weight deflectometer (FWD) tests. The full-scale APT results showed that flexible pavement systems without a PCC slab for geofoam block embankments can be a viable option.

土工泡沫砌块路堤的路面系统设计由于其较低的加州承载比（CBR）值需要特殊的解决方案。因此，在土工泡沫砌块组合之上使用增强波特兰水泥混凝土（PCC）板被认为是增加路面刚度的实用方法。另一方面，PCC板也存在一些固有的缺点，如由于养护而导致施工延迟。没有PCC板的较厚路面系统可能是一个潜在的替代方案。为此，采用加速路面试验（APT）程序对含PCC板和不含PCC板的柔性路面系统的性能进行了详细的研究。在试验台上建造了两条3.75米宽和10米长的路面，并使用一辆3轴、37.72吨、平均速度为16.5公里/小时的卡车施加可控轮载。当车辙在1299次（3897轴重复）达到稳定变形模式时，试验终止，相当于20,264.4等效单轴载荷（ESAL）。测试程序还包括板载荷测试（PLT）和下落重量偏转计（FWD）测试。全面的APT结果表明，对于土工泡沫块路堤，没有PCC板的柔性路面系统是一种可行的选择。

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引用次数: 0

Numerical modelling of dredged sediment improvement under electrokinetic geosynthetics assisted vacuum preloading combined with electroosmosis 电动力土工合成材料辅助真空预压联合电渗透改善疏浚泥沙的数值模拟

IF 6.2 1区工程技术 Q1 ENGINEERING, GEOLOGICAL

Geotextiles and Geomembranes

Pub Date : 2025-11-06 DOI: 10.1016/j.geotexmem.2025.10.010

Jianting Feng , Yang Shen , Wencheng Qi , Wen Shi , He Yang

The absence of multi-physics modelling frameworks limits the optimisation of electrokinetic geosynthetics (EKG) assisted vacuum preloading combined with electroosmosis (VPE) technique for the consolidation and remediation of dredged sediments. A multi-physics coupling model was therefore developed that integrates electrical, hydraulic, mechanical, and chemical fields to simulate the consolidation and remediation processes in VPE. EKG assisted VPE experiments were conducted to verify this model. Results for electric field intensity, excess pore water pressure, settlement and Cu concentrations showed that the model accurately captured both consolidation and remediation behaviour in VPE treatment. Numerical results further revealed that electrical conductivity variations led to uneven distribution of electric potential. Electric potential was concentrated near the anode over time, subsequently influencing electroosmotic flow and electromigration. The dissipation of excess pore water pressure within the dredged sediments was promoted by VPE through the formation of negative pressure. At the anode, the dissipation of excess pore water pressure and the transport of Cu were primarily controlled by electrical conductivity variations, whereas at the cathode, excess pore water pressure dissipation and Cu accumulation were predominantly influenced by clogging.

缺乏多物理场建模框架限制了电动土工合成材料（EKG）辅助真空预压结合电渗透（VPE）技术对疏浚沉积物的固结和修复的优化。因此，开发了一个多物理场耦合模型，该模型集成了电气、水力、机械和化学领域，以模拟VPE中的固结和修复过程。通过心电图辅助VPE实验验证该模型。电场强度、超孔隙水压力、沉降和Cu浓度的结果表明，该模型准确地捕捉了VPE处理过程中的固结和修复行为。数值结果进一步揭示了电导率的变化导致电势分布的不均匀。随着时间的推移，电位集中在阳极附近，随后影响电渗透流动和电迁移。VPE通过形成负压促进疏浚沉积物内部超孔隙水压力的消散。在阳极，超孔隙水压力的耗散和Cu的输运主要受电导率变化的控制，而在阴极，超孔隙水压力的耗散和Cu的积累主要受堵塞的影响。

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引用次数: 0

Large-scale field experiment on vibration screening characteristics of continuous panel-based geofoam-infilled wave barrier 连续板型土工泡沫填波障隔振特性的大型现场试验

IF 6.2 1区工程技术 Q1 ENGINEERING, GEOLOGICAL

Geotextiles and Geomembranes

Pub Date : 2025-11-06 DOI: 10.1016/j.geotexmem.2025.10.008

Adarsh Singh , Sreyashrao Surapreddi , Priyanka Ghosh

This study investigates the vibration screening efficiency of geofoam-infilled (GB) and open trench (OB) wave barriers. Field-scale vibration tests are conducted to evaluate the performance of different barriers under active and passive screening conditions. A modular panel-based system is adopted for the GB to facilitate easy installation, uninstallation, and reinstallation. The impact of input frequency, source-barrier distance, and measurement direction on the performance of GB and OB is thoroughly examined. The results indicate that both barriers perform satisfactorily under different screening conditions, with superior effectiveness observed under active screening. For active screening, the performance of barriers improves with decreasing source-barrier distance. The screening efficiency of GB and OB is higher along the centerline than along the angular line. The performance of OB and GB improves with increasing input frequency for both active and passive screening techniques, irrespective of the source-barrier distance. Additionally, simplified design expressions are developed to predict the performance of GB under active and passive screening conditions. The predicted outcomes of the proposed expressions compare well with the findings reported in the literature.

本文研究了土工泡沫填充（GB）和开槽（OB）两种挡波材料的隔振效果。通过现场振动试验，评价了不同屏障在主动和被动筛分条件下的性能。GB采用模块化面板系统，便于安装、卸载和重新安装。深入研究了输入频率、源垒距离和测量方向对GB和OB性能的影响。结果表明，两种屏障在不同的筛选条件下均表现良好，其中主动筛选效果更佳。对于主动屏蔽，屏障的性能随着源-屏障距离的减小而提高。GB和OB沿中心线的筛分效率高于沿角线的筛分效率。在主动式和被动式筛选技术中，无论源障距离如何，OB和GB的性能都随着输入频率的增加而提高。此外，还开发了简化的设计表达式来预测GB在主动和被动筛选条件下的性能。所提出的表达的预测结果与文献报道的结果相比较。

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引用次数: 0