Geotextiles and Geomembranes最新文献_第6页

Reinforcement effectiveness of stacked prefabricated vertical drain (S-PVD) vacuum preloading method: A case study 堆垛预制垂直排水管（S-PVD）真空预压加固效果的实例研究

IF 4.7 1区工程技术 Q1 ENGINEERING, GEOLOGICAL

Geotextiles and Geomembranes

Pub Date : 2025-06-19 DOI: 10.1016/j.geotexmem.2025.06.004

Huayang Lei , Jiankai Li , Shuangxi Feng , Tianlu Ma , Guoqing Zhang , Shengpeng Yu

To address the issue of vacuum pressure attenuation in traditional vacuum preloading ground reinforcement methods, this study proposes a stacked prefabricated vertical drain (S-PVD) vacuum preloading method based on the stratified sealing drainage technology. A comprehensive field test was conducted to comparatively analyze the reinforcement effectiveness of three vacuum preloading approaches: conventional prefabricated vertical drains (PVDs), reverse prefabricated vertical drains (R-PVDs), and the novel S-PVDs. Test results demonstrate that the S-PVD method not only significantly enhances the ground reinforcement effect, effectively increasing surface settlement and vane shear strength of the soil, but also improves the uniformity of the reinforced soil, with only a 4.6 % difference in the vane shear strength between the top and bottom of the drainage board. In addition, the S-PVD method can meet the unloading criteria in less than 30 days, reducing the consolidation period by 34.1 %. The optimized S-PVD system demonstrates notable cost-effectiveness through energy-efficient operation and accelerated consolidation, achieving 26.5 % reduction in unit area cost of materials and electricity compared to conventional vacuum preloading. These findings suggest that the S-PVD method represents a promising innovation in deep soil stabilization technology, offering a technically and economically viable solution for soft ground improvement in coastal regions.

针对传统真空预压地面加固方法存在的真空压力衰减问题，提出了一种基于分层密封排水技术的堆叠预制垂直排水（S-PVD）真空预压方法。通过现场综合试验，对比分析了传统预制垂直排水管（PVDs）、反向预制垂直排水管（R-PVDs）和新型S-PVDs三种真空预压方式的加固效果。试验结果表明，S-PVD法不仅显著增强了地基加固效果，有效提高了土体的地表沉降和叶片抗剪强度，而且改善了加筋土的均匀性，排水板顶部和底部的叶片抗剪强度仅相差4.6%。此外，S-PVD法可在30天内达到卸载标准，将固结周期缩短34.1%。优化后的S-PVD系统具有显著的成本效益，通过节能操作和加速固化，与传统真空预压相比，单位面积材料和电力成本降低了26.5%。这些研究结果表明，S-PVD方法代表了深土稳定技术的一个有前途的创新，为沿海地区软土地基的改善提供了技术和经济上可行的解决方案。

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引用次数: 0

Consolidation analysis of staged-filled soil slurry with combined grid-horizontal and vertical drains system under vacuum preloading 真空预压下格栅-水平-垂直复合排水系统阶段填土浆体固结分析

IF 4.7 1区工程技术 Q1 ENGINEERING, GEOLOGICAL

Geotextiles and Geomembranes

Pub Date : 2025-06-19 DOI: 10.1016/j.geotexmem.2025.06.003

Ding-Bao Song , Yu Pan , Jian-Hua Yin , Zhen-Yu Yin , He-Fu Pu

This study presents a combined method utilizing grid-horizontal drains assisted by vacuum preloading for initial treatment, and vertical drains with vacuum preloading for further enhancement, aimed at the beneficial reuse of dredged marine sediments as fill material. A novel method for analyzing the consolidation of staged-filled soft soils with grid-horizontal and vertical drains under vacuum preloading is established, and a numerical model, called Combined-drains Consolidation Settlement (CCS), is developed. CCS accounts for staged filling, drain combinations, creep strains, hydraulic conductivity anisotropy, vertical and radial flows, smear effects, time-dependent surcharge and/or vacuum loading, and variable compressibility and hydraulic conductivity throughout the consolidation process. A large-scale laboratory consolidation test is presented, focusing on staged-filled marine sediments treated by the combined system, demonstrating beneficial reuse potential of high-water-content dredged sediments. Settlement and water content predictions using CCS agree well with experimental results. The effects of paving rate (lateral spacing) and the number of grid-horizontal drain layers (vertical spacing) are evaluated using the CCS model. Based on these results, cost-effective design recommendations are proposed. Comparison of treatment efficiency shows the combined method significantly enhances improvement by enabling earlier application of vacuum consolidation than the PVD-only method.

本研究提出了一种组合方法，利用真空预压辅助的网格水平排水沟进行初始处理，并进一步加强真空预压的垂直排水沟，旨在将疏浚的海洋沉积物作为填充物有益地再利用。建立了一种分析真空预压条件下具有水平和垂直排水沟的阶段填筑软土固结的新方法，并建立了排水沟固结沉降（CCS）数值模型。CCS考虑了阶段充填、排水组合、蠕变应变、水力导电性各向异性、垂直和径向流动、抹片效应、随时间变化的附加物和/或真空载荷，以及整个固结过程中的可变压缩性和水力导电性。本文提出了一项大型实验室固结试验，重点研究了联合系统处理的分级填充海洋沉积物，证明了高含水量疏浚沉积物的有益再利用潜力。利用CCS预测沉降和含水量与实验结果吻合较好。利用CCS模型对铺装率（横向间距）和栅格-水平排水层数（垂直间距）的影响进行了评价。基于这些结果，提出了具有成本效益的设计建议。通过对处理效率的比较表明，与单独的pvd方法相比，组合方法可以更早地应用真空固结，从而显著提高了处理效率。

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引用次数: 0

Investigation on the effect of interface temperature on soil-reinforcement interaction mechanism by pullout test 通过拉拔试验研究界面温度对土-筋相互作用机理的影响

IF 4.7 1区工程技术 Q1 ENGINEERING, GEOLOGICAL

Geotextiles and Geomembranes

Pub Date : 2025-06-11 DOI: 10.1016/j.geotexmem.2025.06.002

Huaxin Han , Chengzhi Xiao , Jianguang Yin , Yonghua Cao

To investigate the effect of interface temperature on the soil-reinforcement interaction mechanism, a series of pullout tests were conducted considering different types of reinforcement (geogrid and non-woven geotextile), backfill (dry sand, wet sand, and clay), and six interface temperatures. The test results indicate that at interface temperatures of 0 °C and above, reinforcement failure didn't occur during the pullout tests, whereas it predominantly occurred at subzero temperatures. Besides, the pullout resistance for the same soil-reinforcement interface gradually decreased as the interface temperature rose. At a given positive interface temperature, the pullout resistance between wet sand and reinforcement was significantly higher than that of the clay-reinforcement interface but lower than that of the dry sand-reinforcement interface. Compared with geotextile reinforcements, geogrids were more difficult to pull out under the same interface temperature and backfill conditions. In addition, the lag effect in the transfer of tensile forces within the reinforcements was significantly influenced by the type of soil-reinforcement interface and the interface temperature. Finally, the progressive deformation mechanism along the reinforcement length at different interface temperatures was analyzed based on the strain distribution in the reinforcement.

为了研究界面温度对土-筋相互作用机制的影响，进行了一系列考虑不同类型加筋（土工格栅和无纺布）、回填体（干砂、湿砂和粘土）和6种界面温度的拉拔试验。试验结果表明，在0℃及以上界面温度下，拉拔试验中不发生钢筋破坏，而在零下温度下主要发生钢筋破坏。随着界面温度的升高，同一土加固界面的拉拔阻力逐渐减小。在一定的正界面温度下，湿砂-钢筋界面的拉拔阻力显著高于粘土-钢筋界面，而低于干砂-钢筋界面。在相同的界面温度和回填条件下，土工格栅比土工布加筋更难以拔出。此外，筋土界面类型和界面温度对筋土内部拉力传递的滞后效应有显著影响。最后，根据钢筋内部的应变分布，分析了不同界面温度下沿钢筋长度方向的渐进变形机制。

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引用次数: 0

Case study: Design optimization and field tests of a large geotextile mat cofferdam combined with steel sheet piles 案例研究：大型钢板桩结合土工布围堰的设计优化与现场试验

IF 4.7 1区工程技术 Q1 ENGINEERING, GEOLOGICAL

Geotextiles and Geomembranes

Pub Date : 2025-06-11 DOI: 10.1016/j.geotexmem.2025.05.004

Yupeng Ren , Shuaidong Yang , Mi Zhou , Xihong Zhang , Jinhui Li , Yinghui Tian

A case study on a large geotextile mat cofferdam combined with steel sheet piles was conducted using field testing and numerical simulation to optimize the design and assess its performance. The failure mechanism and overall stability were investigated by numerical simulation, considering potential influence factors, including pile length, width ratio (

W_{2} / W_{1}

), water level, and excavation depth. The width ratio was identified as a critical influencing factor. Specifically, an optimized ratio of

W_{2} / W_{1} = 0.6

demonstrated the best overall performance. When the steel sheet pile intersects the potential failure surface, the stability improvement is most significant, particularly with a length of 15

m

in the current case. Field tests were employed to examine the performance of the optimized cofferdam design. Water level fluctuations, surface displacements, and both horizontal and vertical displacements at various depths were monitored to assess the cofferdam’s behavior. Results from both numerical simulations and field monitoring conclusively affirm the cofferdam’s capability to meet stringent safety criterion during the construction and operational phases. This work fills gaps in standardization of large geotextile mat cofferdam design by providing guidance on geometric configuration, reinforcement integration, and soft soil risk management, thereby advancing engineering practices for similar projects.

采用现场试验和数值模拟相结合的方法，对某大型钢板桩围堰进行了优化设计和性能评价。考虑桩长、桩宽比（W2/W1）、水位、开挖深度等潜在影响因素，采用数值模拟方法对破坏机理和整体稳定性进行了研究。确定了宽度比是一个关键的影响因素。具体而言，优化后的W2/W1=0.6时，整体性能最佳。当钢板桩与潜在破坏面相交时，其稳定性改善最为显著，特别是当前情况下长度为15 m的钢板桩。通过现场试验，验证了优化围堰设计的性能。监测水位波动、地表位移以及不同深度的水平和垂直位移，以评估围堰的行为。数值模拟和现场监测的结果最终证实了围堰在施工和运行阶段满足严格的安全标准的能力。通过对大型土工布围堰几何形态、加固整合、软土风险管理等方面的指导，填补了大型土工布围堰设计标准化的空白，促进了类似工程的工程实践。

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引用次数: 0

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