Geotextiles and Geomembranes最新文献_第7页

Evaluation of water removal capability of wicking nonwoven geotextiles 吸芯非织造土工布除水性能评价

IF 4.7 1区工程技术 Q1 ENGINEERING, GEOLOGICAL

Geotextiles and Geomembranes

Pub Date : 2025-06-10 DOI: 10.1016/j.geotexmem.2025.06.001

Minghao Liu , Jiming Liu , Sam Bhat , Rishi Gupta , Cheng Lin

Water accumulation in road bases and subgrade is one of the primary causes of road distress. To counteract this adverse impact, this study introduces a novel geosynthetic composite, consisting of biaxial polypropylene geogrids heat-bonded to wicking nonwoven geotextiles (WNWGs). This new composite integrates wicking capabilities with reinforcement. Unlike wicking woven geotextiles (WWGs), which rely on deep-grooved fibers for wetting and wicking, the wicking mechanism of WNWGs is primarily based on the microstructure and unique fiber orientation of the nonwoven geotextile component, further enhanced by proprietary chemical treatment to convert the fibers from hydrophobic to hydrophilic. This modification allows WNWGs to exhibit rapid wetting and wicking properties while preserving the large lateral drainage functionality of conventional nonwoven geotextiles. To assess the wicking performance of this material, a series of wicking tests were conducted in both water and saturated soils under controlled temperature and relative humidity. Additionally, contact angle measurements and microscopic analyses using Scanning Electron Microscopy (SEM) were conducted to elucidate the underlying wicking mechanisms. The results confirmed that the WNWGs possessed superior spontaneous and forced wetting and wicking capabilities compared to traditional nonwoven geotextiles. The findings offer valuable reference for evaluating the performance of the WNWG-geogrid composite.

道路基层和路基积水是造成道路病害的主要原因之一。为了抵消这种不利影响，本研究引入了一种新型土工合成复合材料，该复合材料由双轴聚丙烯土工格栅热粘合到吸芯非织造土工织物（WNWGs）组成。这种新型复合材料将排汗能力与强化相结合。与依靠深槽纤维进行润湿和排芯的吸湿编织土工布（wwg）不同，WNWGs的吸湿机制主要基于非织造土工布组分的微观结构和独特的纤维取向，并通过专有的化学处理将纤维从疏水性转化为亲水性进一步增强。这种修改允许WNWGs在保持传统非织造土工布的大侧向排水功能的同时，表现出快速润湿和排芯性能。为了评估该材料的排汗性能，在控制温度和相对湿度的条件下，在水和饱和土壤中进行了一系列的排汗试验。此外，还进行了接触角测量和扫描电子显微镜（SEM）显微分析，以阐明潜在的排芯机制。结果证实，与传统的非织造土工布相比，WNWGs具有优越的自发和强制润湿和排芯能力。研究结果为评价wnwg -土工格栅复合材料的性能提供了有价值的参考。

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引用次数: 0

Geogrid stabilization effectiveness – Comprehensive assessment through multiscale experiments with bender element sensor technology 土工格栅稳定效果——弯曲单元传感器技术多尺度试验综合评价

IF 4.7 1区工程技术 Q1 ENGINEERING, GEOLOGICAL

Geotextiles and Geomembranes

Pub Date : 2025-06-07 DOI: 10.1016/j.geotexmem.2025.05.006

Han Wang , Youngdae Kim , Mingu Kang , Erol Tutumluer , Heather Shoup

Geogrids are commonly used in pavement structures to mechanically stabilize unbound aggregate layers to improve structural performance and extend lifespan. Geogrids stabilize aggregate particles by restraining their lateral movements through mechanisms such as interlocking and friction. This paper presents a multiscale experimental study conducted on extruded and welded geogrids, having different aperture shapes and properties, for their stabilization effectiveness through quantifying modulus enhancement using the bender element (BE) sensor technology. The study examines geogrid-stabilized aggregates both in a large-scale testbed with three embedded BE field sensors and in a repeated load triaxial device with geogrid coupons installed at midheight and embedded BE sensor pairs above geogrids. The large-scale testbed allowed lateral pressure measurements under a series of loading and unloading stages. Small strain moduli from the shear wave measurements determined from both experiments quantified geogrid stiffened zones when tested with the same dense-graded aggregates. All four geogrids showed modulus enhancements in both test setups when compared to control test results. The geogrid mechanical stabilization influence zone was observed to be as large as 6 in. (15 cm) above one extruded geogrid. Such quantified modulus enhancements and influence zones are essential for incorporating geogrid into mechanistic-empirical (M-E) pavement design framework.

土工格栅通常用于路面结构，以机械稳定松散的骨料层，以提高结构性能和延长使用寿命。土工格栅通过诸如联锁和摩擦等机制来抑制聚合粒子的横向运动，从而稳定聚合粒子。本文采用弯曲单元（BE）传感器技术对不同孔径形状和性能的挤压和焊接土工格栅进行了多尺度试验研究，通过量化模量增强来研究土工格栅的稳定效果。该研究对土工格栅稳定聚集体进行了研究，包括在大型试验台上安装了三个嵌入式BE现场传感器，以及在重复加载三轴装置中安装了土工格栅，并在土工格栅上方嵌入了BE传感器对。大型测试平台允许在一系列加载和卸载阶段进行侧压力测量。当使用相同的密级集料进行测试时，从两个实验中确定的剪切波测量的小应变模量量化了土工格栅的加筋区。与对照测试结果相比，所有四个土工格栅在两个测试设置中都显示出模量增强。观察到土工格栅力学稳定影响区最大可达6 in。（15厘米）以上一个挤压土工格栅。这种量化的模量增强和影响区域对于将土工格栅纳入力学-经验（M-E）路面设计框架至关重要。

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引用次数: 0

Laboratory validation of seismic damage assessment in reinforced soil models based on sensor-enabled piezoelectric geogrids (SPGG) 基于传感器压电土工格栅（SPGG）的加筋土模型震害评估实验室验证

IF 4.7 1区工程技术 Q1 ENGINEERING, GEOLOGICAL

Geotextiles and Geomembranes

Pub Date : 2025-06-07 DOI: 10.1016/j.geotexmem.2025.05.007

Jun Wang, Zhiqiang Xiang, Hongtao Fu, Yu Rao, Ziyang Gao, Junfeng Ni

Earthquakes are common geological disasters, and slopes under seismic loading can trigger coseismic landslides, while also becoming unstable due to accumulated damage caused by the seismic activity. Reinforced soil slopes are widely used as seismic-resistant geotechnical systems. However, traditional geosynthetics cannot sense internal damage in reinforced soil systems, and existing in-situ distributed monitoring technologies are not suitable for seismic conditions, thus limiting accurate post-earthquake stability assessments of slopes. This study presents, for the first time, the use of a batch molding process to fabricate self-sensing piezoelectric geogrids (SPGG) for distributed monitoring of soil behavior under seismic conditions. The SPGG's reinforcement and damage sensing abilities were verified through model experiments. Results show that SPGG significantly enhances soil seismic resistance and can detect soil failure locations through voltage distortions. Additionally, the tensile deformation of the reinforcement material can be quantified with sub-centimeter precision by tracking impedance changes, enabling high-precision distributed monitoring of reinforced soil under seismic conditions. Notably, when integrated with wireless transmission technology, the SPGG-based monitoring system offers a promising solution for real-time monitoring and early warning in road infrastructure, where rapid detection and response to seismic hazards are critical for mitigating catastrophic outcomes.

地震是常见的地质灾害，地震荷载作用下的边坡会引发同震滑坡，同时也会因地震活动造成的累积破坏而变得不稳定。加筋土边坡是一种广泛应用的抗震岩土工程体系。然而，传统的土工合成材料无法感知加筋土体系的内部损伤，现有的原位分布式监测技术也不适合地震条件，从而限制了对边坡的准确震后稳定性评估。本研究首次提出了使用批量成型工艺制造自传感压电土工格栅（SPGG），用于地震条件下土壤行为的分布式监测。通过模型实验验证了SPGG的加固和损伤感知能力。结果表明，SPGG能显著提高土体的抗震性能，并能通过电压畸变检测土体的破坏位置。此外，通过对阻抗变化的跟踪，可实现对加筋材料拉伸变形的亚厘米级量化，实现对地震条件下加筋土的高精度分布式监测。值得注意的是，当与无线传输技术相结合时，基于spgg的监测系统为道路基础设施的实时监测和预警提供了一种很有前景的解决方案，在道路基础设施中，快速检测和响应地震灾害对于减轻灾难性后果至关重要。

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引用次数: 0

Effect of geomembrane texturing method on geomembrane-dry GCL interface shear behavior 土工膜变形方法对土工膜-干GCL界面剪切性能的影响

IF 4.7 1区工程技术 Q1 ENGINEERING, GEOLOGICAL

Geotextiles and Geomembranes

Pub Date : 2025-06-05 DOI: 10.1016/j.geotexmem.2025.05.008

Juan Hou , Xuelei Xie , Craig H. Benson

Effect of geomembrane texturing method on interface shear behavior between textured geomembranes (GM) and the nonwoven side of a dry geosynthetic clay liner (GCL) was evaluated using large-scale direct shear tests conducted using geomembranes with four different types of texturing and a range of asperity heights: impinged texturing (GMTI), coextruded texturing (GMTC), low asperity embossed texturing (GMTE_L), and high asperity embossed texturing (GMTE_H). The GCL contained granular bentonite between woven and nonwoven geotextiles bonded by needlepunching. Tests were conducted on the dry GCL to isolate GM-GCL interface behavior from other factors. All interfaces exhibited similar strain-softening shear behavior. Type of texturing had a strong influence on GM-GCL interface behavior. Comparable shear-displacement curves involving direct surface engagement between the texturing asperities and geotextile fibers were obtained with GMTI and GMTC. GMTI texturing delaminated during shear, reducing geotextile combing compared to GMTC. The GMTE_L engaged the geotextile on the GCL via tip penetration and surface friction, as evinced by striations on the GCL surface, resulting in the lowest interface strengths of the textured GMs. GMTE_H engaged deep into the interior of the GCL, resulting in dilation, tearing of the geotextile, furrows in the bentonite, and the highest interface strength of those tested.

采用四种不同类型的土工膜进行了大规模直剪试验，分别是撞击式土工膜（GMTI）、共挤式土工膜（GMTC）、低粗糙度压纹土工膜（GMTEL）和高粗糙度压纹土工膜（GMTEH），研究了土工膜变形方法对土工膜（GM）与干土工合成粘土衬垫（GCL）非织造侧界面剪切行为的影响。GCL含有颗粒状膨润土，介于编织和非织造土工布之间，通过针刺粘合。在干GCL上进行了试验，以将GM-GCL界面行为与其他因素隔离开来。所有界面均表现出相似的应变软化剪切行为。纹理类型对GM-GCL界面行为有较大影响。利用GMTI和GMTC获得了变形颗粒与土工布纤维直接表面接触的剪切位移曲线。与GMTC相比，GMTI在剪切过程中纹理分层，减少了土工布的精梳。GMTEL通过尖端渗透和表面摩擦与GCL上的土工布接触，如GCL表面的条纹所示，导致有纹理的gm的界面强度最低。GMTEH深入GCL内部，导致土工布膨胀、撕裂，膨润土出现沟壑，界面强度是所有测试中最高的。

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引用次数: 0

Experimental investigation of the capillary drainage performance of multilayer wicking fabric 多层排芯织物毛细排水性能的实验研究

IF 4.7 1区工程技术 Q1 ENGINEERING, GEOLOGICAL

Geotextiles and Geomembranes

Pub Date : 2025-05-25 DOI: 10.1016/j.geotexmem.2025.05.005

Yifan Wang , Yongkang Wu , Xu Li , Shaowei Wei , Hongye Yan

Excessive moisture within subgrade layers significantly diminishes subgrade stiffness and induces pavement deformation. A multilayer wicking fabric (WF) composed of deeply grooved fibers was developed to regulate moisture in unsaturated fine-grained soils. This study introduces a novel methodology for determining the water retention curve (WRC) over the full suction range. At the same time, an efficient method for predicting WF's WRC via NMR technology was pointed, and clarifying the material's microscopic drainage mechanisms. Building on this foundation, soil column drying experiments were conducted to verify WF's moisture regulation capacity in unsaturated fine-grained soils. The results demonstrate that WF exhibits its highest water retention under conditions of elevated matric suction. Additionally, soil column drying experiments reveal that WF incorporation significantly reduces average soil water content and accelerates drying rates. WF's drainage efficiency shows high sensitivity to initial water contents (w_i) and evaporation segment length (L), with drainage performance increasing proportionally to these parameters. Moreover, soil water profiles are influenced by water retention capacity, capillary migration rate, and hydraulic gradient. These findings underscore the potential of multilayer wicking fabrics in managing moisture within fine-grained subgrades, presenting a novel and effective strategy for maintaining subgrade dryness and enhancing long-term stability.

路基层内水分过多会显著降低路基刚度，引起路面变形。研制了一种由深沟槽纤维组成的多层吸湿织物，用于非饱和细粒土的水分调节。本研究介绍了一种新的方法来确定全吸力范围内的水保持曲线（WRC）。同时，指出了利用核磁共振技术预测WF的WRC的有效方法，并阐明了材料的微观排水机理。在此基础上，进行了土柱干燥试验，验证了WF在非饱和细粒土中的调节水分能力。结果表明，在提高基质吸力的条件下，WF的保水率最高。此外，土壤柱干燥试验表明，WF掺入显著降低了土壤平均含水量，加快了干燥速度。WF排水效率对初始含水量（wi）和蒸发段长度(L)高度敏感，排水性能与这两个参数成正比增加。此外，土壤水分剖面受保水能力、毛管迁移速率和水力梯度的影响。这些发现强调了多层吸湿织物在细粒路基中控制水分的潜力，为保持路基干燥和提高长期稳定性提供了一种新颖有效的策略。

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引用次数: 0

Load-induced strain analysis in geocell reinforced footing systems 土工格室加固基础系统的荷载诱发应变分析

IF 4.7 1区工程技术 Q1 ENGINEERING, GEOLOGICAL

Geotextiles and Geomembranes

Pub Date : 2025-05-21 DOI: 10.1016/j.geotexmem.2025.05.002

Sarper Demirdogen, Ayhan Gurbuz

In performance-based design, it is crucial to understand deformation characteristics of geocell layers in soil under footing loads. To explore this, a series of laboratory loading tests were carried out to investigate the influence of varying parameters on the strain levels within the geocell layer in a sandy soil under axial strip footing loading. The results were analyzed in terms of maximum strain levels, strain variation along the geocell layer and the correlation between horizontal and vertical strains. In this study, the maximum observed strain levels for geocell-reinforced strip footing systems reached 2.3 % for horizontal (tensile) strain and 1.4 % for vertical (compressive) strain. Furthermore, most strain levels were concentrated within a distance of 1.5 times the footing width from the axis of strip footing. In geocell-reinforced footing systems, the interaction between horizontal and vertical strains becomes a key factor, with the ratio of horizontal to vertical cell wall strains ranging approximately from 1 to 2.5. The outcomes of this study are expected to contribute to the practical applications of geocell-reinforced footing systems.

在基于性能的设计中，了解土工格室层在基础荷载作用下的变形特征是至关重要的。为此，开展了一系列室内加载试验，研究了轴向条形基础加载下不同参数对砂土土工格室层应变水平的影响。分析了最大应变水平、应变沿土工格室层的变化以及水平应变与垂直应变的相关性。在本研究中，土工格室加筋条形基础系统的最大观测应变水平在水平（拉伸）应变下达到2.3%，在垂直（压缩）应变下达到1.4%。大多数应变水平集中在距条形基础轴线1.5倍基础宽度范围内。在土工格室加固基础体系中，水平应变与竖向应变之间的相互作用成为关键因素，水平应变与竖向应变之比约为1 ~ 2.5。本研究结果有望为土工格室加固基础系统的实际应用做出贡献。

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引用次数: 0

Consolidation solution of ground improved with artificial solidified crust–vertical drain 人工固化结皮改善地基固结液-垂直排水

IF 4.7 1区工程技术 Q1 ENGINEERING, GEOLOGICAL

Geotextiles and Geomembranes

Pub Date : 2025-05-20 DOI: 10.1016/j.geotexmem.2025.05.003

Long Chen , Desheng Li , Yonghui Chen , Yi Zhu , Kaizhe Shang

For artificial solidified crust (ASC)–vertical drain ground, an analytical consolidation solution (IB solution: regarding ASC as an impervious boundary) is proposed, which considers both the radial and vertical seepage. The orthogonal relation is proven and the computing efficiency is greatly improved. Then, consolidation solutions applicable to ASC–vertical drain ground, include IB solution, RDL solution (radial consolidation solution of double-layered ground) by Li et al. (2025), the quasi-rigorous solution by Tang and Onitsuka (2001), are compared and discussed. Compared to the quasi-rigorous solution, IB solution slightly overestimates the consolidation rate, but it can be promoted in engineering according to the following reasons: a) the convergence is easier to be achieved; b) its accuracy is not affected by the ratio of the vertical time factor to the radial time factor; c) common major parameters of ASC (i.e., thickness and permeability) have little effect on the applicability. By ignoring the vertical seepage in soil, IB solution degenerates to the simplified solution. Consolidation rate calculated by the simplified solution is slower than that of IB solution, and the solution can be a simple method for estimating the consolidation behavior of ASC–vertical drain ground.

针对人工固化壳(ASC) -垂直排水地基，提出了考虑径向和垂直渗流的解析固结解（IB解：以ASC为不透水边界）。证明了正交关系，大大提高了计算效率。然后对适用于asc垂直排水地基的固结方案，包括IB方案、Li等人（2025）的RDL方案（双层地基径向固结方案）、Tang和Onitsuka（2001）的准严格方案进行了比较和讨论。与拟严格解相比，IB解对固结率的估计略高，但在工程上可以推广，原因如下：a)收敛性更容易实现；B)其精度不受垂直时间因子与径向时间因子之比的影响；c) ASC常用主要参数（即厚度和渗透率）对适用性影响不大。忽略土中的竖向渗流，IB解退化为简化解。简化解计算出的固结速率比IB解计算出的固结速率要慢，可以作为一种简便的估算asc -竖向排水地基固结特性的方法。

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引用次数: 0

Response of isolated footing on a geogrid reinforced fill and undisturbed peat subgrade soil system 土工格栅加筋填土-原状泥炭基土体系隔震基础响应

IF 4.7 1区工程技术 Q1 ENGINEERING, GEOLOGICAL

Geotextiles and Geomembranes

Pub Date : 2025-05-17 DOI: 10.1016/j.geotexmem.2025.05.001

Aykut Erol, Zulkuf Kaya

The geotechnical behavior of undisturbed peat subgrade within geogrid-reinforced foundation systems remains inadequately understood, despite its high compressibility and engineering complexities. This study conducts a systematic investigation into the bearing capacity and settlement characteristics of an isolated footing on geogrid-reinforced fill over undisturbed peat, utilizing laboratory-scale model tests. Unlike previous studies that rely on disturbed peat samples, this research preserves natural stratification and in-situ response mechanisms, providing a more accurate representation of reinforcement performance. The results demonstrate that geogrid reinforcement enhances bearing capacity by up to 149.7 % and mitigates settlement by 79 %, with optimal reinforcement efficiency achieved at h/B = 0.3. These findings underscore the critical role of geogrid embedment depth, fill thickness, and relative density in optimizing foundation stability. By integrating undisturbed peat in physical modeling, this study bridges the gap between controlled laboratory experiments and real-world geotechnical applications, providing a framework for optimizing geosynthetic reinforcement strategies in highly compressible subgrades and paving the way for more reliable foundation designs in challenging ground conditions.

土工格栅加固基础体系中未受扰动泥炭地基的岩土力学特性仍未得到充分的了解，尽管其具有高压缩性和工程复杂性。本研究利用实验室规模的模型试验，对未受扰动泥炭上土工格栅加筋填筑隔震基础的承载力和沉降特性进行了系统的研究。与以往依赖于扰动泥炭样品的研究不同，本研究保留了自然分层和原位响应机制，提供了更准确的加固性能表征。结果表明：加筋后土工格栅承载力可提高149.7%，沉降可降低79%，当h/B = 0.3时，加筋效率最佳；这些发现强调了土工格栅嵌入深度、填充厚度和相对密度在优化基础稳定性中的关键作用。通过将未受干扰的泥炭整合到物理模型中，本研究弥合了受控实验室实验与现实岩土工程应用之间的差距，为优化高压缩性路基的土工合成加固策略提供了框架，并为在具有挑战性的地面条件下进行更可靠的基础设计铺平了道路。

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引用次数: 0

Investigation on relationship of geogrid strain and settlement in the GRPS embankment under cyclic loading 循环荷载作用下GRPS路堤土工格栅应变与沉降关系研究

IF 4.7 1区工程技术 Q1 ENGINEERING, GEOLOGICAL

Geotextiles and Geomembranes

Pub Date : 2025-05-09 DOI: 10.1016/j.geotexmem.2025.04.005

Kaifu Liu, Shiyu Xu, Zhangbo Wan, Minjie Wen, Kairen Xue

Geosynthetic-reinforced pile-supported (GRPS) embankments provide an effective solution for mitigating subgrade settlement and enhancing service performance. This study presents a series of physical model tests aimed at gaining a comprehensive understanding of the mechanical behavior of geogrids in GRPS embankments. Effects of loading cycles, loading frequency, geogrid layer number, and pile type on geogrid strain and settlement were investigated. An empirical formula was introduced to evaluate the impact of these factors on the relationship between geogrid strain and settlement. The results demonstrate that both geogrid strain and settlement increase with loading cycles and loading frequency, while longer piles effectively reduce settlement. GRPS embankments with two geogrid layers exhibited smaller geogrid strain and settlement compared to those with a single layer. A power function incorporating the normalized geogrid strain increment ratio and settlement was developed to predict the geogrid strain variations under cyclic loading, with significant influence from the aforementioned factors. Furthermore, an application of the EBGEO method, modified to account for cyclic loadings, is proposed, which introduces a load parameter to account for the number of loading cycles. The results obtained using this modified method closely align with measured values, providing a more accurate estimation of geogrid strain development under cyclic loading.

土工合成增强桩支撑（GRPS）路堤是缓解路基沉降和提高使用性能的有效解决方案。本研究提出了一系列物理模型试验，旨在全面了解GRPS路堤中土工格栅的力学行为。研究了加载周期、加载频率、土工格栅层数和桩型对土工格栅应变和沉降的影响。提出了一个经验公式来评价这些因素对土工格栅应变与沉降关系的影响。结果表明：土工格栅应变和沉降随加载周期和加载频率的增加而增加，而长桩能有效地降低沉降；与单层土工格栅相比，双层土工格栅路堤具有更小的土工格栅应变和沉降。建立了结合归一化土工格栅应变增量比和沉降的幂函数来预测循环荷载作用下土工格栅应变的变化，上述因素对土工格栅应变变化有显著影响。此外，还提出了EBGEO方法的一种应用，该方法经过修改以考虑循环荷载，该方法引入了一个荷载参数来考虑荷载循环次数。修正方法得到的结果与实测值吻合较好，能更准确地估计土工格栅在循环荷载作用下的应变发展情况。

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引用次数: 0

Mechanical properties and mechanisms of soil-geotextile interface under constant normal Stiffness: Effect of freezing conditions 恒法向刚度条件下土-土工织物界面力学特性及机理：冻结条件的影响

IF 4.7 1区工程技术 Q1 ENGINEERING, GEOLOGICAL

Geotextiles and Geomembranes

Pub Date : 2025-05-05 DOI: 10.1016/j.geotexmem.2025.04.003

Pengfei He , Ce Zhuang , Xiangbing Kong , Boyang Liu , Fuping Zhang

A set of direct shear tests on the soil-geotextile interface (SGI) were conducted using a temperature-controlled constant normal stiffness (CNS) direct shear apparatus. This was done in order to evaluate the effects of normal stiffness, initial normal stress, soil water content, and temperature on SGI shear behavior and micro-deformation patterns. The observations indicate that all shear stress-shear displacement curves demonstrate strain-hardening characteristics, with SGI cohesion and friction angle increasing at higher normal stiffness and lower temperatures. At freezing conditions, water content significantly affects the interface friction angle, while this effect is minimal at positive temperatures. Normal stress increases with higher water content, lower temperatures, and higher normal stiffness. Shear stress initially rises with normal stress before decreases, with a more pronounced rise under sub-zero conditions. Normal stress shrinkage shows a positive correlation with normal stiffness. Micro-deformation analysis of soil particles at the interface indicates significant strain localization within the shear band, which is less pronounced under sub-zero temperatures compared to positive temperatures. These patterns of normal displacement vary across analysis points within the shear band, with the macroscopic normal displacement reflecting a cumulative effect of these microscopic variations.

采用温控恒法向刚度（CNS）直剪仪对土工织物界面（SGI）进行了直剪试验。这样做是为了评估法向刚度、初始法向应力、土壤含水量和温度对SGI剪切行为和微变形模式的影响。结果表明：在较高的法向刚度和较低的温度下，剪切应力-剪切位移曲线均表现出应变硬化特征，SGI黏聚力和摩擦角增大；在冻结条件下，水含量显著影响界面摩擦角，而在正温度下，这种影响最小。随着含水量的增加、温度的降低和法向刚度的提高，法向应力也随之增加。剪应力随正应力先升高后降低，在零下条件下，剪应力的升高更为明显。法向应力收缩率与法向刚度呈正相关。界面处土体颗粒的微变形分析表明，在剪切带内存在明显的应变局部化现象，与正温度相比，在零下温度下不太明显。这些法向位移模式在剪切带内的分析点之间变化，宏观法向位移反映了这些微观变化的累积效应。

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引用次数: 0