Transportation Geotechnics最新文献

{"title":"Analysis of skid resistance of epoxy chip seal based on three-dimensional power spectrum","authors":"Min Wang ,&nbsp;Kaiyi Li ,&nbsp;Jie Wang ,&nbsp;Zhuowei Li ,&nbsp;Hui Lv ,&nbsp;Lulu Hu","doi":"10.1016/j.trgeo.2026.101902","DOIUrl":"10.1016/j.trgeo.2026.101902","url":null,"abstract":"<div><div>Epoxy chip seal as an effective means to improve the anti-skid performance of concrete pavements is increasingly widely used, its skid resistance is significantly affected by its surface texture, but its skid resistance performance and durability analysis method is single. To address the these issues, a high toughness modified epoxy resin chip seal structure was developed to carry out indoor accelerated abrasion test, selecting the material bearing area curve and three-dimensional power spectrum function to study the surface texture structure and decay law of the epoxy chip seal specimen with different abrasion time, analyze the relationship between the three-dimensional surface roughness power spectrum function and the coefficient of friction, and study the effect of the different contact area ratios and wavelengths on the dynamic friction. The results show that in the abrasion process, the degree of abrasion at the top of the aggregate is larger than that at the bottom, and the influence of the surface micro-texture structure on the coefficient of kinetic friction is larger than that of the macro texture, the effective contact area of epoxy chip seal specimens with two aggregate sizes of 2–3 mm and 3–5 mm are 30∼40 % and 20∼40 % respectively, and the corresponding optimal wavelengths are 0.2 mm–5.04 mm, 0.3 mm–5.04 mm, at the same time, the correlation coefficient of the dynamic friction coefficient model based on the surface roughness power spectrum function and abrasion time under the multi-scale texture structure reaches 0.8, which shows that the use of the surface texture power spectrum density function can effectively evaluate the anti-skidding performance of the pavement.</div></div>","PeriodicalId":56013,"journal":{"name":"Transportation Geotechnics","volume":"58 ","pages":"Article 101902"},"PeriodicalIF":5.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146039519","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}

{"title":"Damage mechanism of double-block ballastless track on subgrade under coupled complex loads","authors":"Xuhao Cui ,&nbsp;Yapeng Liu ,&nbsp;Bowen Du ,&nbsp;Hong Xiao ,&nbsp;Lei Xu ,&nbsp;Zhihai Zhang ,&nbsp;Yang Wang","doi":"10.1016/j.trgeo.2026.101912","DOIUrl":"10.1016/j.trgeo.2026.101912","url":null,"abstract":"<div><div>When CRTS I double-block ballastless track is subjected to coupled loads such as differential subgrade settlement (DSS) and temperature gradients (TG), its mechanical response is significantly affected, making it difficult to guarantee railway operational efficiency and safety. This study established a detailed finite element model of the CRTS I double-block ballastless track on subgrade, which integrates the concrete damage plasticity model and the cohesive zone model. With DSS and TG taken as initial conditions, the changes in track geometry and structural damage before and after the application of train loads were examined. The findings indicate that under the influence of TG and DSS, damage to the supporting layer initiates at the lower surface, while the initial damage location of the track slab is influenced by the positive or negative nature of TG. When the negative TG acts together with DSS, more severe structural deformation and damage occur. Under negative TG, the maximum vertical rail deformation and the settlement threshold corresponding to full damage of the supporting layer are 1.57 times and 80% of those under the positive TG, respectively. The application of train loads further accelerates the progression of damage and deformation in the track structure, decreasing the settlement threshold for complete damage under the positive TG from 25 mm to 20 mm, while the maximum rail deformation increases by 33.1%. This study provides a theoretical basis for damage identification and the refinement of settlement control criteria for ballastless tracks in complex loading environments.</div></div>","PeriodicalId":56013,"journal":{"name":"Transportation Geotechnics","volume":"58 ","pages":"Article 101912"},"PeriodicalIF":5.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146080583","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}

{"title":"Small-scale test on the response of adjacent piles caused by shield tunnel excavation in sand","authors":"Shan-wei Liu ,&nbsp;Qian-qing Zhang ,&nbsp;Ruo-feng Feng","doi":"10.1016/j.trgeo.2026.101942","DOIUrl":"10.1016/j.trgeo.2026.101942","url":null,"abstract":"<div><div>Additional settlement and stress of the surrounding high-rise buildings, bridges, high-speed railways and other pile-supported structures will be caused by the excavation process of shield tunnel, and there is a need to evaluate the influence of tunneling excavation on adjacent pile-supported structures and surrounding soil. This paper presents a small-scale test for the response of adjacent piles with different pile lengths, diameters, and pile-tunnel relative positions caused by tunnel excavation in sand. A testing machine for the precise simulation of shield tunneling process was developed, and the concrete piles of different specifications were made. The data on the displacement of surrounding sandy soil and axial force of adjacent piles induced by tunnel excavation were collected and analyzed by utilizing specially designed sensors and data collection and analysis software. Furthermore, the influence of pile length, pile diameter, pile-tunnel relative distance, and pile head load on surrounding sandy soil’s displacement caused by tunnel excavation was revealed, and the variation of axial force of adjacent piles caused by tunnel excavation with different pile lengths, pile diameters, and pile-tunnel relative distances was clarified. The relevant achievements can provide scientific guidance and practical support for disaster prevention and control of adjacent in-service piles during tunnel excavation in sand.</div></div>","PeriodicalId":56013,"journal":{"name":"Transportation Geotechnics","volume":"58 ","pages":"Article 101942"},"PeriodicalIF":5.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146190529","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}

{"title":"Distribution and evolution of distress in embankment-bridge transition sections of the Gonghe–Yushu Expressway in degrading permafrost regions","authors":"Bingyan Li ,&nbsp;Minghao Liu ,&nbsp;Yanhu Mu ,&nbsp;Jing Luo ,&nbsp;Xin Ju ,&nbsp;Fei Yin ,&nbsp;Fan Yu ,&nbsp;Yunhui Huang","doi":"10.1016/j.trgeo.2026.101945","DOIUrl":"10.1016/j.trgeo.2026.101945","url":null,"abstract":"<div><div>The Gonghe-Yushu Expressway (GYE) is the world’s first expressway constructed across a high-altitude permafrost region. Under the influence of climate warming and permafrost degradation, its embankment–bridge transition section (EBTS) is increasingly susceptible to structural deterioration. However, systematic investigations into EBTS distresses on permafrost expressways remained limited. This study conducted a field survey of 240 EBTSs in the permafrost zone of the GYE, employing an integrated method combining unmanned aerial vehicle and ground penetrating radar. The distribution characteristics and evolutionary mechanisms of EBTS distress in permafrost expressway were firstly elucidated, and a novel EBTS structure to mitigate such distress was proposed. The results indicate that EBTS distresses on the GYE can be classified into five primary types: uneven settlement, upheaval mound of the protection-cone, subsidence of the protection-cone, cracks of the protection-cone and dislocation between the wing walls and abutments. Over 90% of the surveyed EBTSs exhibit varying degrees of distress, with uneven settlement—typically less than 20 cm—being the most prevalent. These are predominantly located in the section extending from Maduo County to Bayan Har Mountain. High ground temperature and water accumulation beneath the bridge structure are identified as the primary factors contributing to settlement. Furthermore, EBTS distress follows a progressive evolution mechanism: it initiates with uneven pavement settlement, progresses to deformation of the protection cones, and ultimately leads to dislocation between wing walls and abutments. This study represents the first systematic analysis of EBTS distress characteristics and their developmental mechanisms in permafrost expressways, offering both a theoretical foundation and practical guidance for mitigating such issues in cold-region infrastructure engineering.</div></div>","PeriodicalId":56013,"journal":{"name":"Transportation Geotechnics","volume":"58 ","pages":"Article 101945"},"PeriodicalIF":5.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146190532","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}

{"title":"Upper-bound solutions for capacity of tracked vehicles on clay under fully three-dimensional loading","authors":"Dingtao Yan ,&nbsp;Yue Yan ,&nbsp;Dengfeng Fu ,&nbsp;Dong Wang","doi":"10.1016/j.trgeo.2026.101927","DOIUrl":"10.1016/j.trgeo.2026.101927","url":null,"abstract":"<div><div>This study develops novel upper-bound solutions for predicting the ultimate bearing capacity of tracked vehicles on clay under fully three-dimensional loading, encompassing vertical weight, horizontal traction/braking, moments, and torsion. A rigorously derived three-dimensional failure mechanism integrates the superposition of rotation-admissible Green mechanisms with two orthogonal variable cross-section planar velocity field, extending upper-bound limit analysis beyond conventional coplanar loading limitations. The dual tracks are idealized as rigid plates bonded to soil, with detachment prohibited. Velocity fields are optimized through several kinematic parameters to minimize internal energy dissipation across deformation zones and discontinuity surfaces. Validation against finite element analyses demonstrates good agreement for uniaxial capacities and failure envelopes across geometric configurations, specifically examining track length-to-width ratios from 6 to 10 and track spacing-to-width ratios from 3 to 5. The study establishes the inaugural rigorous analytical foundation for six-degree-of-freedom bearing capacity analysis of tracked vehicles, effectively balancing physical interpretability with engineering practicality.</div></div>","PeriodicalId":56013,"journal":{"name":"Transportation Geotechnics","volume":"58 ","pages":"Article 101927"},"PeriodicalIF":5.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146189915","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}

{"title":"Damage mechanism of high-pier high-speed railway track-bridge system under debris flow impact","authors":"Yujie Yu ,&nbsp;Zhewei Fang ,&nbsp;Yichuan Zhang ,&nbsp;Zhipeng Lai ,&nbsp;Lizhong Jiang","doi":"10.1016/j.trgeo.2026.101911","DOIUrl":"10.1016/j.trgeo.2026.101911","url":null,"abstract":"<div><div>Debris flow disasters pose an increasing threat to bridges, but the damage effect of debris flow impact on high-speed railway track-bridge systems is still not fully understood. This study conducted a comprehensive investigation into the dynamic response, damage evolution, and failure sequence of a CRTS II slab track-bridge system with high piers under debris flow impact. The effects of varying debris flow velocities and impact heights on the damage modes of key structural components, including bridge piers, bearings, sliding layers, and rails, were analyzed in detail. Results indicated that the debris flow acted on the bridge system by inducing pier bending and excessive pier-top lateral deformation, which propagated upward to the bridge and track structures. Peak deformation envelopes along the bridge were generally symmetric. However, the system exhibited significant asymmetric damage and residual deformation, which were mainly attributed to the non-uniform constraint effects of shear alveolars. The fixed bearing at the abutment was prone to early failure, thereby leading to lateral movement of the main girder. Sliding layer damage was concentrated in areas near longitudinal sliding bearings without the shear alveolar. The rails showed asymmetric stepped deformation under the debris flow impacts. A moderate modification of shear alveolars can hardly alleviate the impact damage. Increasing the fixed bearing stiffness at the abutment can restrain the lateral movement of the girder and reduce abnormal rail irregularity.</div></div>","PeriodicalId":56013,"journal":{"name":"Transportation Geotechnics","volume":"58 ","pages":"Article 101911"},"PeriodicalIF":5.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146080421","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}

{"title":"Influence of slaking behavior on the shear strength, swelling capacity, and crack evolution of mudstone","authors":"Danxi Sun ,&nbsp;Guojun Cai ,&nbsp;Yiqing Sun ,&nbsp;Yan Feng ,&nbsp;Gaofeng Pan ,&nbsp;Hao Wang ,&nbsp;Qi Tao","doi":"10.1016/j.trgeo.2026.101919","DOIUrl":"10.1016/j.trgeo.2026.101919","url":null,"abstract":"<div><div>Excavation of cut slopes and tunnels generates substantial quantities of mudstone waste. To reduce construction costs and accelerate project timelines, this waste material has been utilized as fill in expressway embankments. In this study, the engineering performance of mudstone waste was evaluated through a series of slaking, direct shear, swelling strain, and crack development tests. The experimental results demonstrate that vertical stress intensifies slaking behavior by promoting particle breakage. As slaking progresses, the shear strength of mudstone progressively decreases, primarily because the increasing fraction of fine particles disrupts the formation of load-bearing force chains between coarse grains. Swelling strain exhibits a nonmonotonic evolution: it initially decreases as particle breakage and rearrangement reduce the swelling capacity, but subsequently increases owing to the accumulation of finer particles with higher swelling potential. In addition, contacts between coarse and fine particles act as structural weak points that strongly influence crack propagation. The breakage of coarse particles during slaking process reduces the number of such weak interfaces and thereby modifies the crack pattern. Although the overall crack ratio remains constant, the cracks network undergoes a morphological transition towards shorter, wider cracks. These findings provide critical insight into the long-term deformation and failure mechanisms of embankments constructed with mudstone fill and offer a basis for the safe, efficient, and cost-effective utilization of mudstone waste in construction applications.</div></div>","PeriodicalId":56013,"journal":{"name":"Transportation Geotechnics","volume":"58 ","pages":"Article 101919"},"PeriodicalIF":5.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146080496","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}

{"title":"Dynamic approach-based assessment of debris flow susceptibility in the mountainous area of North China","authors":"Bo Liu ,&nbsp;Xueqiang Gong ,&nbsp;Yonghao Zhou ,&nbsp;Xiewen Hu ,&nbsp;Kun He ,&nbsp;Jian Cui","doi":"10.1016/j.trgeo.2026.101908","DOIUrl":"10.1016/j.trgeo.2026.101908","url":null,"abstract":"<div><div>Debris flow susceptibility assessment is critical for mitigating risks to large-scale infrastructure, yet existing models often lack dynamic capability by relying solely on static environmental factors. This study identified six environmental factors most closely related to debris flows from 20 static factors, establishing a catchment intrinsic indicator (CII) to reflect debris flow propensity. By integrating CII with hourly rainfall intensity (I_60min), we developed a dynamic debris flow susceptibility model—the CII-I model. To demonstrate its applicability, the five rainfall scenarios corresponding to different return periods presented serve as applications. Results indicate that the CII-I model achieves an AUC of 0.926, outperforming Random Forest (RF, AUC = 0.861) and Support Vector Machine (SVM, AUC = 0.866). The high-susceptibility catchments are mainly concentrated in the K45–K65 section of the Fengsha railway (FSR), and all catchments are highly susceptible under the 100-year return period rainfall scenario, consistent with post-event field investigations. Overall, the CII-I model provides improved predictive performance and applicability, establishing a dynamic framework for susceptibility zoning under real rainfall events.</div></div>","PeriodicalId":56013,"journal":{"name":"Transportation Geotechnics","volume":"58 ","pages":"Article 101908"},"PeriodicalIF":5.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146039520","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}

{"title":"X-ray CT-based investigation of mesoscopic pore structure and macro-meso coupled damage model for anisotropic lean clay under a freeze–thaw cycle","authors":"Yu Tang ,&nbsp;Ping Yang ,&nbsp;Jiahui Wang ,&nbsp;Chang Huo","doi":"10.1016/j.trgeo.2026.101939","DOIUrl":"10.1016/j.trgeo.2026.101939","url":null,"abstract":"<div><div>The mechanical properties of frozen soil in different orientations significantly affect both the strength of frozen walls and the stability assessment of subway shield-driven tunnels constructed through geological formations using artificial ground freezing (AGF) techniques. Given that such differences resulted from depositional conditions and the arrangement of skeleton particles within clay soils, it is essential to investigate the effect of anisotropy on the strength characteristics of sedimentary clay. This study investigates the influence of inherent anisotropy and freezing temperature on the mechanical characteristics of frozen lean clay. To reduce the randomness, discreteness inherent and improve repeatability in undisturbed soil sampling, an apparatus and its methodology were developed to prepare anisotropic clay specimens with controlled sampling angles (0°, 30°, 45°, 60° and 90°). Uniaxial compressive strength (UCS) tests were conducted under varying subzero temperatures, and results showed that UCS exponentially increased with the decreasing sampling angles. Three-dimensional (3D) computed tomography (CT) scanning technology was employed to reconstruct the pore structure of specimens, revealing the lowest porosity along the natural sedimentation direction and a nonlinear trend with the increasing sampling angle. Pore parameters, including equivalent radius, throat length, and coordination number, followed a normal distribution and exhibited obvious sampling angle-dependent variations. Furthermore, the influence of freeze–thaw (F–T) cycles on UCS, elastic modulus and porosity were quantified. The damage parameters were extracted using macroscopic elastic modulus and microscopic fractal dimension as independent variables, and a coupled macro-meso damage model was established. These findings provide an effective means to quantify the degree of deterioration in soils subjected to one F–T cycle, offering a precise basis for strength parameter determination, which is essential for structural safety design and stability evaluation in AGF-reinforced engineering applications.</div></div>","PeriodicalId":56013,"journal":{"name":"Transportation Geotechnics","volume":"58 ","pages":"Article 101939"},"PeriodicalIF":5.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146189907","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}

{"title":"Experimental study on macro-meso damage of jointed rock mass under sequential cyclic loading–unloading followed by freeze–thaw cycles","authors":"Junhao Wei ,&nbsp;Shili Hu ,&nbsp;Zhengding Deng ,&nbsp;Guanshi Wang ,&nbsp;Qiang Cheng ,&nbsp;Yaojie Tu","doi":"10.1016/j.trgeo.2026.101929","DOIUrl":"10.1016/j.trgeo.2026.101929","url":null,"abstract":"<div><div>Jointed rock mass in cold regions is often subjected to the sequential cyclic loading–unloading followed by freeze–thaw cycles. Studying the inductive correlation mechanism between the cyclic loading–unloading damage of jointed rock mass and subsequent freeze–thaw cycles is of great significance for the scientific evaluation of the long-term stability of related rock engineering projects. Sequential cyclic loading–unloading, freeze–thaw tests, and subsequent uniaxial loading were conducted on jointed rock masses, integrated with NMR, AE, and DIC monitoring, to examine how prior cyclic damage influences subsequent freeze–thaw damage and governs the macro- to <em>meso</em>-scale damage evolution under uniaxial loading. The results indicate that the impacts of the sequential effects of cyclic loading–unloading followed by freeze–thaw cycles on the evolution of rock mass pore structure exhibit significant scale differences. Cyclic loading–unloading primarily promote the emergence of micro- and small pores, while freeze–thaw cycles accelerate the expansion and connectivity of mesopores and macropores. Although cyclic loading–unloading have a limited impact on the overall porosity of the rock mass, the number of microscopic pores significantly increases. During the freeze‑thaw phase, frost‑heave pressure drives the interconnection and coalescence of micro‑pores, forming meso‑ and macro‑pores with increased susceptibility to frost‑heave damage, which in turn exacerbates the overall freeze‑thaw deterioration. During the stage of stable damage of the rock mass, energy and ringdown counts decrease with decreasing freezing temperature. At high levels of loading–unloading stress, the damage mechanism transitions from crack propagation to crack sliding, promoting more sudden failure. The freeze–thaw cycle dominates the process of deterioration of rock mass initiation strength and fracture toughness, and compressive strength also decreases accordingly with decreasing freezing temperature. Higher levels of macroscopic joint damage significantly reduce the peak strength of the rock mass and induce more pronounced mesoscale damage evolution under loading.</div></div>","PeriodicalId":56013,"journal":{"name":"Transportation Geotechnics","volume":"58 ","pages":"Article 101929"},"PeriodicalIF":5.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146189912","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}