Transportation Geotechnics最新文献_第7页

Compressibility of Clays under Repetitive Loading: A New Perspective on Consolidation State, Loading Frequency, and Partially Drained Conditions 重复加载下粘土的压缩性：固结状态、加载频率和部分排水条件的新视角

IF 5.5 2区工程技术 Q1 ENGINEERING, CIVIL

Transportation Geotechnics

Pub Date : 2025-12-16 DOI: 10.1016/j.trgeo.2025.101864

Jang-Un Kim, Hyunwook Choo

Many structures built on saturated clays are subjected to repetitive loads from sources such as waves, wind, and traffic. This loading can induce excess pore water pressure within saturated clays, leading to additional volumetric deformation and the long-term degradation of geostructures. This study investigated the compressibility of saturated clays under repetitive loading, focusing on the coupled effects of the initial degree of consolidation (U_i) and loading frequency (f). A newly developed loading system was used to perform tests on sand, kaolin, and Ca-bentonite specimens across a wide range of frequencies (f = 0.011, 0.046, 0.139, 0.278, 1.67, 8.33, 25, 125, and 250 mHz) and consolidation states (U_i = 0, 0.2, 0.4, 0.6, and 1.0). The results indicated that the cyclic-induced void ratio change (Δe) was highly sensitive to both U_i and f. For underconsolidated soils (U_i < 1), high-frequency loading significantly increased Δe, whereas the response was minimal and largely independent of these factors under low-frequency conditions or for normally consolidated soils (U_i = 1). This study identified three distinct drainage regimes: drained, partially drained, and undrained based on the cyclic loading ratio (T/t₁₀₀), establishing a quantitative threshold of T/t₁₀₀ ≤ 0.001 − 0.01 for the transition to pseudo-undrained behavior. Furthermore, repetitive loading was found to increase the horizontal effective stress, leading to a higher overconsolidation ratio and a corresponding reduction in post-cyclic compressibility. The findings provide new experimental evidence on the complex, coupled behaviors of saturated soils and offer critical insights for the reliable design and performance assessment of structures on soft clay deposits.

许多建在饱和粘土上的建筑物都要承受来自海浪、风和交通等来源的反复载荷。这种荷载会在饱和粘土中诱发超孔隙水压力，导致额外的体积变形和土工结构的长期退化。本文研究了饱和粘土在重复加载下的压缩性，重点研究了初始固结度（Ui）和加载频率(f)的耦合效应。采用新开发的加载系统对砂土、高岭土和钙膨润土试样进行了宽频率范围（f = 0.011、0.046、0.139、0.278、1.67、8.33、25、125和250 mHz）和固结状态（Ui = 0、0.2、0.4、0.6和1.0）的测试。结果表明，循环诱导的孔隙比变化（Δe）对Ui和f都高度敏感。对于欠固结土（Ui < 1），高频加载显著增加Δe，而低频条件下或正常固结土（Ui = 1）的响应很小，与这些因素无关。本研究根据循环加载比（T/t100）确定了三种不同的排水模式：排水、部分排水和不排水，并建立了T/t100≤0.001−0.01的定量阈值，以过渡到伪不排水行为。此外，发现重复加载增加了水平有效应力，导致更高的超固结比和相应的循环后压缩率降低。这一发现为研究饱和土的复杂耦合特性提供了新的实验证据，并为软粘土沉积物结构的可靠设计和性能评估提供了重要见解。

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引用次数: 0

A similarity model for subgrade compaction from collaborative laboratory-field tests 基于协同实验室现场试验的路基压实相似模型

IF 5.5 2区工程技术 Q1 ENGINEERING, CIVIL

Transportation Geotechnics

Pub Date : 2025-12-16 DOI: 10.1016/j.trgeo.2025.101858

Xuefei Wang , Xu Liu , Jiale Li , Jianmin Zhang , Guowei Ma

Intelligent Compaction (IC) relies on high-quality datasets for accurate quality evaluation. However, the absence of sufficient field data challenges the model development. This study proposes a similarity model based on coordinated laboratory and field tests, aiming to provide theoretical basis for the dataset expansion. A spatio-temporal equivalence model is established using the dual energy-state equivalence principle to correlate the laboratory compaction time and the number of rolling passes. Multi-domain ICMVs are used to validate the similarity model quantitatively. Results show that the proposed method effectively expands the IC dataset. A compaction quality evaluation model trained on the augmented dataset shows significantly reduced prediction error and improved generalization comparing to the original model for all evaluation indexes. This work provides a theoretical basis to adopt the laboratory test to field applications, enhancing the assessment reliability of IC.

智能压缩（IC）依赖于高质量的数据集进行准确的质量评估。然而，缺乏足够的现场数据对模型的开发提出了挑战。本研究提出了一种基于实验室和现场协同试验的相似度模型，旨在为数据集扩展提供理论依据。利用双能态等效原理建立了实验室压实时间与轧制道次之间的时空等效模型。采用多域icmv对相似度模型进行定量验证。结果表明，该方法有效地扩展了集成电路数据集。在增强数据集上训练的压缩质量评价模型在所有评价指标上都比原始模型显著降低了预测误差，提高了泛化程度。为将实验室测试应用于现场，提高集成电路的评估可靠性提供了理论依据。

引用次数: 0

Experimental and theoretical study on the shield tunneling model for gas-bearing strata based on image processing 基于图像处理的含气地层盾构掘进模型的实验与理论研究

IF 5.5 2区工程技术 Q1 ENGINEERING, CIVIL

Transportation Geotechnics

Pub Date : 2025-12-16 DOI: 10.1016/j.trgeo.2025.101855

Zhi Ding , Jiao-Ming Xu , Yang Chen , Shao-Heng He

The free gas reservoirs occurring in the form of sacs are widely distributed along the southeastern coastal region of China, potentially posing significant risks during shield tunnelling. Hence, investigating the deformative mechanism of gas-bearing soils induced by shield excavation holds vital engineering significance. In this paper, physical model tests simulating gas-bearing strata were performed under varying L/D values (the ratio of the distance between shield excavation face and the sac to the tunnel diameter), with dry sand strata set as a control. The images captured during the tests were processed through PIV (Particle Image Velocimetry) analysis. It can be found that the variation regarding support pressure and pore pressure of fluid sac was primarily demarcated by the limiting state of the excavation, exhibiting two distinct phases in each test. Face instability occurred more rapidly in gas-bearing strata, the failure area evolved from an initial configuration of a “triangle and rectangle” to a final distribution resembling two interrelated trapezoids. The curves of surface settlement progressively exhibit a characteristic of groove shape as the displacement of tunnel face increased, and oblique photogrammetry technique was then adopted in this study to achieve three-dimensional reconstruction of the settlement pit. For a larger value of L/D, the influencing area induced by shield excavation varies within a broader range while the maximum deformation and volume is relatively small. By improving column hole shrinkage theory, a theoretical formulation accounting for soil loss was derived to accurately predict surface deformation in gas-bearing strata. On this basis, the effects of tunnel depth and excavation radius on surface deformation were analysed.

在中国东南沿海地区，以囊状形式赋存的游离气藏广泛分布，在盾构隧道施工中具有较大的潜在风险。因此，研究盾构开挖引起含气土的变形机理具有重要的工程意义。本文以干砂地层为对照，在不同的L/D值（盾构开挖工作面与硐室之间的距离与隧道直径之比）条件下进行了含气地层的模拟物理模型试验。测试过程中捕获的图像通过PIV（粒子图像测速）分析进行处理。可以发现，支护压力和液囊孔隙压力的变化主要以基坑的极限状态为界限，在每次试验中表现出两个不同的阶段。在含气地层中，工作面失稳发生得更快，破坏区域从最初的“三角形和矩形”形态演变为最终的“两个相互关联的梯形”形态。随着巷道工作面位移的增大，地表沉降曲线逐渐呈现沟槽状特征，本研究采用斜向摄影测量技术实现沉降坑的三维重建。当L/D值较大时，盾构开挖的影响区域变化范围较大，而最大变形量和最大体积相对较小。通过对柱孔收缩理论的改进，推导出考虑土壤流失量的理论公式，以准确预测含气地层地表变形。在此基础上，分析了隧道深度和开挖半径对地表变形的影响。

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引用次数: 0

Characteristics and prediction of over-track building vibration response due to train operation in turnout areas 道岔区列车运行的越轨建筑振动响应特征及预测

IF 5.5 2区工程技术 Q1 ENGINEERING, CIVIL

Transportation Geotechnics

Pub Date : 2025-12-16 DOI: 10.1016/j.trgeo.2025.101859

Xuming Li , Ying Chen , Wenjun Luo , Wenjie Guo , Chao Zou

Train-induced vibrations in metro depot turnout areas present critical challenges for over-track building developments, significantly impacting human comfort and vibration-sensitive equipment through elevated environmental pollution levels. To address this, propose an integrated two-stage simulation framework combining high-fidelity train-track-turnout dynamics with soil-building wave propagation modeling. A train-track dynamic model incorporating the turnout structure was developed to calculate the wheel-rail interaction forces, which serve as input for the subsequent track-soil-building model. The track-soil-building system was established using a combined finite element and infinite element method to simulate ground-borne vibrations and the associated structural responses effectively. Field validation demonstrates exceptional accuracy, with simulated 1/3-octave band acceleration levels showing a good agreement with measurements across 4–80 Hz frequencies. Key findings reveal that turnout areas generate wide-spectrum vibrations from combined impacts at switch and crossing panels, exhibiting distinctive propagation characteristics. High-frequency components attenuate rapidly while low-frequency energy propagates extensively with minimal loss. Critically, building responses show resonance-driven amplification at 10–20 Hz frequencies due to soil-structure interaction, necessitating targeted vibration control in turnout areas to mitigate structural vibration risks. This research establishes a validated methodology for predicting turnout-induced building vibrations, providing essential data for optimizing metro depot designs.

地铁车辆段道岔区列车引起的振动对超轨建筑发展提出了严峻的挑战，通过提高环境污染水平，严重影响人体舒适度和振动敏感设备。为了解决这个问题，提出了一个集成的两阶段模拟框架，将高保真的火车轨道-道岔动力学与土壤建筑波传播建模相结合。建立了包含道岔结构的列车-轨道动力学模型，计算轮轨相互作用力，作为后续轨道-地基模型的输入。采用有限元和无限元相结合的方法建立轨道-地基-建筑系统，有效地模拟了地基振动和相关结构响应。现场验证证明了卓越的准确性，模拟的1/3倍频带加速度水平与4-80 Hz频率的测量结果非常吻合。主要研究结果表明，道岔区域在开关和交叉板的联合冲击下产生广谱振动，表现出独特的传播特性。高频成分衰减迅速，而低频能量以最小的损耗广泛传播。关键是，由于土-结构相互作用，建筑响应在10-20 Hz频率下表现出共振驱动的放大，因此需要在道岔区域进行有针对性的振动控制，以减轻结构振动风险。本研究建立了一种有效的预测建筑振动的方法，为优化地铁车辆段设计提供了必要的数据。

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引用次数: 0

Investigation on the triaxial creep behavior of red-stratum mudstone soil-rock mixture with different rock contents 不同含石量红层泥岩-土石混合体三轴蠕变特性研究

IF 5.5 2区工程技术 Q1 ENGINEERING, CIVIL

Transportation Geotechnics

Pub Date : 2025-12-16 DOI: 10.1016/j.trgeo.2025.101861

Ming Dai , Kaichao Wang , Junhua Xiao , Quanmei Gong , Hongye Yan

Red-stratum mudstone, due to its wide distribution and convenient availability, has been widely used in high-fill subgrade projects in western China, but its low strength and susceptibility to fracturing make the problem of creep deformation particularly prominent. In this paper, a series of triaxial creep tests on red-stratum mudstone soil-rock mixture were carried out, focusing on the influence of rock content and stress state on creep behaviors. The development of axial and volumetric creep strains, the effect of rock content on the viscoplastic flow direction was clarified, and the time-dependent evolution of particle breakage was further analyzed. The results show that creep strain develops rapidly in the initial stage, then gradually slows down and tends to stabilize, and the overall curve exhibits a hyperbolic feature. At the same time, the final axial creep strain decreases first and then increases with the increase of rock content, with the optimal range being 0.5–0.7. Moreover, the volumetric creep path differs significantly from the conventional shear path, meaning the traditional dilatancy equation cannot directly describe the viscoplastic flow direction. Finally, particle sieve tests reveal that creep behaviors depend not only on particle breakage but also on the internal pore structure of the mixture. A denser pore structure will weaken the contribution of particle breakage to macroscopic creep deformation.

红层泥岩由于其分布广泛、获取方便，在西部高填方路基工程中得到了广泛的应用，但其强度低、易破裂，蠕变问题尤为突出。本文对红层泥岩-土石混合体进行了一系列三轴蠕变试验，重点研究了岩石含量和应力状态对蠕变行为的影响。阐明了轴向蠕变应变和体积蠕变应变的发展规律，以及岩石含量对粘塑性流变方向的影响，并进一步分析了颗粒破碎的随时间演化规律。结果表明：蠕变应变在初始阶段发展迅速，随后逐渐减缓并趋于稳定，整体曲线呈现双曲线特征；同时，随着含石量的增加，最终轴向蠕变应变先减小后增大，最佳范围为0.5 ~ 0.7。此外，体积蠕变路径与常规剪切路径存在显著差异，这意味着传统的剪胀方程不能直接描述粘塑性流动方向。颗粒筛试验表明，混合料的蠕变行为不仅与颗粒破碎程度有关，还与混合料的内部孔隙结构有关。致密的孔隙结构会减弱颗粒破碎对宏观蠕变变形的贡献。

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引用次数: 0

A wind-driven device can improve the cooling efficiency of clogged crushed-rock embankments in permafrost regions 风力驱动装置可以提高多年冻土区淤塞碎石堤防的冷却效率

IF 5.5 2区工程技术 Q1 ENGINEERING, CIVIL

Transportation Geotechnics

Pub Date : 2025-12-16 DOI: 10.1016/j.trgeo.2025.101860

Kun Xiang , Zhi Wen , Yasheng Li , Yuan Li , Aleksandr Zhirkov

To improve the poor cooling efficiency of crushed-rock embankments (CREs) clogged by snow or sand, a novel fully automatic wind-driven air pumping device is developed to enhance convective heat transfer. Numerical simulations demonstrate that this device can increase the internal airflow by several orders of magnitude, thereby significantly strengthening forced convection and improving the overall cooling performance. The embankment and underlying permafrost experience notable temperature reductions, with the cooling effect gradually diminishing with depth. Even for deep permafrost layers, the device still exhibits a remarkable cooling effect. Among the tested configurations, the U-shaped crushed-rock layer embankment equipped with the wind-driven device exhibits the most pronounced cooling performance, outperforming the crushed-rock interlayer embankment with the device due to its higher overall convective efficiency from the revetment crushed-rock layers. Both equipped CREs effectively enhance the ground heat release capacity and substantially mitigate long-term settlement deformation, demonstrating a significant improvement in the thermal stability and structural safety of embankments. Furthermore, the proposed device shows strong adaptability to snow accumulation and sand clogging, ensuring reliable operation under severe environmental conditions. This study provides an innovative and practical approach for improving the cooling performance of CREs in snowy and sandy permafrost regions.

针对碎石堤防因雪或沙堵塞而冷却效率低下的问题，研制了一种新型的全自动风动抽气装置，以增强对流换热。数值模拟表明，该装置可使内部气流增加几个数量级，从而显著增强强制对流，提高整体冷却性能。路基和下面的永久冻土经历了显著的温度下降，随着深度的增加，冷却效果逐渐减弱。即使是在很深的永久冻土层，该装置仍然显示出显著的冷却效果。在试验配置中，配备风动装置的u型碎石层路堤冷却性能最为显著，由于其从护岸碎石层中获得的整体对流效率更高，因此优于配备风动装置的碎石层间路堤。这两种装置都有效地增强了地面放热能力，并大大减轻了长期沉降变形，表明路堤的热稳定性和结构安全性得到了显着改善。此外，该装置具有较强的积雪和沙堵塞适应性，可确保在恶劣环境条件下可靠运行。该研究为改善冻土区多雪和多沙冻土区cre的制冷性能提供了一种创新和实用的方法。

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引用次数: 0

A Self-Levelling railway sleeper concept and its large-scale testing 铁路自调平轨枕概念及其大规模试验

IF 5.5 2区工程技术 Q1 ENGINEERING, CIVIL

Transportation Geotechnics

Pub Date : 2025-12-15 DOI: 10.1016/j.trgeo.2025.101853

A.F. Esen , V. Lojda , A. van Belkom , V. Markine , D.P. Connolly

Railway track transition zones present engineering challenges due to their abrupt change in stiffness between structural elements such as embankments, bridges and tunnels affecting track geometry parameters. Although a variety of stiffness-based remedial measures have been widely applied, their implementation can be constrained by high capital cost, operational disruption, and the complexities associated with modifying the substructure. As a result, interventions in practice commonly focus on controlling permanent deformations and differential settlement, particularly related to the development of hanging sleepers. Thus, this study investigates the use of modular self-levelling sleepers (SLS) as a solution. To do so, two concept SLS systems are designed and developed: one employing a granular mechanism (SLS-G), and the other based on a horizontally acting wedge mechanism (SLS-HW). Both variants use the polymeric sleepers and are designed for compatibility with conventional ballasted track systems. Experimental laboratory testing is undertaken, and it is found that the SLS prototypes were able to restore the sleeper-ballast contact for voids up to 40 mm depth, while stress measurements at the interface indicated improved load distribution under the rails. The findings support the proof-of-concept that self-levelling sleepers have the potential to be a modular, low-disruption solution for mitigating track geometry degradation and reducing maintenance requirements at transition zones.

由于路堤、桥梁和隧道等结构元素之间的刚度突变会影响轨道几何参数，铁路轨道过渡区给工程带来了挑战。尽管各种基于刚度的补救措施已经被广泛应用，但它们的实施可能受到高资金成本、操作中断以及修改子结构相关的复杂性的限制。因此，实践中的干预措施通常侧重于控制永久变形和差异沉降，特别是与悬挂枕木的发展有关。因此，本研究探讨了模块化自找平枕木（SLS）作为解决方案的使用。为此，设计和开发了两种概念SLS系统：一种采用颗粒机制（SLS- g），另一种基于水平作用楔形机制（SLS- hw）。这两种变体都使用聚合物轨枕，并设计用于与传统的有碴轨道系统兼容。进行了实验实验室测试，发现SLS原型能够在深度达40 mm的空隙中恢复轨枕-镇流器接触，而界面处的应力测量表明，轨道下的负载分布得到改善。研究结果支持了自调平轨枕的概念验证，即它有潜力成为一种模块化、低干扰的解决方案，可以减轻轨道几何形状的退化，减少过渡区域的维护需求。

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引用次数: 0

Airport infrastructure risk to liquefaction by deploying multi-modal data and remote sensing 通过部署多模式数据和遥感，机场基础设施对液化的风险

IF 5.5 2区工程技术 Q1 ENGINEERING, CIVIL

Transportation Geotechnics

Pub Date : 2025-12-13 DOI: 10.1016/j.trgeo.2025.101849

Maria Taftsoglou , George Papathanassiou , Sotirios Valkaniotis , Sotirios Argyroudis , Stergios-Aristoteles Mitoulis

Airports are critical components of transport infrastructure, contributing to regional socioeconomic vitality and serving as key hubs for emergency response during natural disasters. However, their operations are highly vulnerable to geohazards such as earthquake-induced soil liquefaction and associated ground failures. Despite this vulnerability, there is currently a lack of rapid, regionally scalable tools for assessing liquefaction-related risks specific to airport infrastructure. This paper for the first time in the literature addresses this gap by introducing a practical, geomorphology-informed methodology for the preliminary identification of liquefaction-prone areas and the rapid assessment of risk to airport infrastructure. The proposed approach leverages multimodal data, including surface geological mapping, tailored remote sensing inputs, and established seismic risk models, to develop liquefaction susceptibility maps and estimate potential damage. The methodology is applied to a real-world airport case study under a representative seismic scenario, revealing that large sections of the runway and taxiways are situated on highly susceptible soils. The HAZUS methodology is employed to assess potential losses and is validated using data from three international airports that have experienced documented liquefaction-related damage. This study provides a novel, scalable, and cost-effective framework that can be applied globally to support airport operators, risk engineers, and insurers in rapidly identifying vulnerable zones, prioritizing inspections, and developing targeted mitigation strategies. It contributes to advancing geotechnical risk assessment by bridging regional-scale mapping with infrastructure-specific vulnerability analysis. The methodology has the potential to be extended and applied to other critical infrastructure—such as ports, highways, railways, and industrial facilities—located in areas susceptible to liquefaction.

机场是运输基础设施的重要组成部分，有助于促进区域社会经济活力，并在自然灾害期间成为应急反应的关键枢纽。然而，它们的操作极易受到地质灾害的影响，例如地震引起的土壤液化和相关的地面破坏。尽管存在这种脆弱性，但目前缺乏快速、可扩展的工具来评估机场基础设施的液化相关风险。本文在文献中首次引入了一种实用的地貌学方法，用于初步确定液化易发地区和快速评估机场基础设施的风险，从而解决了这一差距。该方法利用多模式数据，包括地表地质测绘、量身定制的遥感输入和已建立的地震风险模型，开发液化易感性图并估计潜在损害。该方法应用于一个具有代表性的地震情景下的真实机场案例研究，揭示了跑道和滑行道的大部分位于高度敏感的土壤上。HAZUS方法用于评估潜在损失，并使用三个国际机场的数据进行验证，这些机场经历了记录在案的液化相关损害。本研究提供了一种新颖、可扩展且具有成本效益的框架，可在全球范围内应用，以支持机场运营商、风险工程师和保险公司快速识别脆弱区域、确定检查的优先顺序并制定有针对性的缓解策略。它通过将区域尺度的测绘与特定基础设施的脆弱性分析相结合，有助于推进岩土工程风险评估。该方法有可能扩展并应用于其他关键基础设施，如港口、高速公路、铁路和工业设施，这些设施位于易受液化影响的地区。

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引用次数: 0

Effects of multi-source solid waste-based stabilizing materials on the improvement of high-salinity silt 多源固体废物基稳定材料对高矿化度淤泥的改善作用

IF 5.5 2区工程技术 Q1 ENGINEERING, CIVIL

Transportation Geotechnics

Pub Date : 2025-12-13 DOI: 10.1016/j.trgeo.2025.101851

Yongsheng Yao , Chen Liu , Yuchen Wang , Xiyan Chen , Jue Li , Junjun Ni

High-salinity silt poses challenges in its application as roadbed fill material, including low bearing capacity and leaching of toxic elements. There is an urgent need to develop green solidification treatment technologies for silt based on the resource utilisation of solid waste. This study developed a multi-source solid waste stabilizer (FPC) using fly ash (FA), phosphogypsum (PG), and carbide slag (CS) and investigated its solidification effects on high-salinity silt. At 28 days of curing, the unconfined compressive strength of the FPC stabilized soil reached 4.48 MPa, meeting the strength requirements as outlined in the Specifications for Design of Highway Subgrades. Additionally, its elastic modulus was measured at 238.21 MPa, significantly higher than the 106.73 MPa of ordinary Portland cement (OPC) stabilized soil, demonstrating superior resistance to deformation. As the dosage of the stabilizer increased, the stress–strain curve of the stabilized soil exhibited a sharp decline after reaching its peak, indicating brittle failure characteristics. However, its overall mechanical performance remained superior to that of OPC stabilized soil. The FPC stabilized soil maintained good integrity even after multiple wet-dry cycles, with a water stability coefficient reaching 85.84 % at a 10 % applied dosage, primarily due to the cementing effects of hydration products such as calcium silicate hydrate (C-S-H). This research provides a new technological pathway for the resource utilisation of high-salinity silt, significantly contributing to the enhancement of roadbed material performance with a focus on sustainability.

高矿化度淤泥作为路基填筑材料存在承载力低、有毒元素浸出等问题。开发基于固体废弃物资源化利用的淤泥绿色固化处理技术是迫切需要的。以粉煤灰（FA）、磷石膏（PG）和电石渣（CS）为原料，研制了一种多源固体废物稳定剂（FPC），并研究了其对高矿化度淤泥的固化效果。养护28 d时，FPC稳定土的无侧限抗压强度达到4.48 MPa，满足《公路路基设计规范》的强度要求。其弹性模量为238.21 MPa，显著高于普通硅酸盐水泥（OPC）稳定土的106.73 MPa，表现出优异的抗变形能力。随着稳定剂用量的增加，稳定土的应力-应变曲线在达到峰值后急剧下降，表现出脆性破坏特征。但其整体力学性能仍优于OPC稳定土。FPC稳定土即使在多次干湿循环后仍保持良好的完整性，在10%的施用量下，水稳定系数达到85.84%，这主要是由于水化产物如水化硅酸钙（C-S-H）的胶结作用。本研究为高矿化度淤泥的资源利用提供了一条新的技术途径，为提高路基材料的可持续性性能做出了重要贡献。

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引用次数: 0

Spatiotemporal-information-driven surrogate modeling for predictive analysis of shield tunneling-induced settlement 基于时空信息驱动的盾构隧道沉降预测分析代理模型

IF 5.5 2区工程技术 Q1 ENGINEERING, CIVIL

Transportation Geotechnics

Pub Date : 2025-12-12 DOI: 10.1016/j.trgeo.2025.101850

Wenyuan Liu , Liyuan Tong , Yuhao Zhang , Hongjiang Li , Yu Xiao , Hao Wu

Ground settlement induced by shield tunneling is a critical concern in underground engineering, featuring complex spatiotemporal dependencies. To address the limitations of existing intelligent surrogate models in comprehensively considering influencing factors and achieving real-time prediction, this study proposes a deep learning-based settlement prediction framework that integrates multi-source information, including geometric features, multi-ring geological conditions, multi-time-step shield tunnelling parameters, and historical settlement records. Attention mechanisms are introduced to extract critical spatiotemporal dependencies, while a residual network is employed to map the fused representation to the predicted settlement. The proposed method is validated using two real tunnelling projects, demonstrating strong predictive performance with testing R² values of 0.92 and 0.97. Comparative experiments with traditional machine learning models and an LSTM-based variant further confirm the superiority of the attention-based architecture. Additionally, analysis of attention weights shows that the model can automatically focus on key operational moments and geologically sensitive strata, thereby enhancing interpretability and providing insights aligned with tunnelling process.

盾构隧道引起的地面沉降是地下工程中一个重要的问题，具有复杂的时空依赖性。针对现有智能代理模型在综合考虑影响因素和实现实时预测方面的局限性，提出了一种基于深度学习的沉降预测框架，该框架融合了几何特征、多环地质条件、多时间步长盾构隧道参数和历史沉降记录等多源信息。引入注意机制提取关键的时空依赖关系，并使用残差网络将融合的表示映射到预测的沉降。通过两个实际隧道工程对该方法进行了验证，检验R2分别为0.92和0.97，具有较强的预测能力。与传统机器学习模型和基于lstm的变体的对比实验进一步证实了基于注意力的架构的优越性。此外，对关注权重的分析表明，该模型可以自动关注关键操作时刻和地质敏感层，从而提高可解释性，并提供与隧道掘进过程一致的见解。

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引用次数: 0