Soils and Foundations最新文献

Drilling parameters as predictors of the measured full scale performance of CFA piles by using statistical analysis of CPT profiles: a case study 利用CPT剖面的统计分析将钻孔参数作为CFA桩全尺寸性能的预测指标：一个案例研究

IF 3.3 2区工程技术

Soils and Foundations Pub Date : 2025-05-30 DOI: 10.1016/j.sandf.2025.101631

Gianpiero Russo , Ilaria Esposito , Massimo Ramondini , Alessia Vecchietti , Giacomo Russo

{"title":"Drilling parameters as predictors of the measured full scale performance of CFA piles by using statistical analysis of CPT profiles: a case study","authors":"Gianpiero Russo , Ilaria Esposito , Massimo Ramondini , Alessia Vecchietti , Giacomo Russo","doi":"10.1016/j.sandf.2025.101631","DOIUrl":"10.1016/j.sandf.2025.101631","url":null,"abstract":"<div><div>The Continuous Flight Auger (CFA) piles, also known as Auger Cast In Place piles (ACIP), have a widespread use in the world market of replacement concrete piles. The installation of such piles is generally made by equipment which records several significant installation parameters, as the torque M<sub>t</sub> and the axial force N, applied during the auger advancing step. In the auger retrieval stage other parameters that can influence the load-settlement performance of the pile are monitored. The paper presents a case study dealing with the CFA piles adopted as a foundation for a water treatment basin. In the paper first the equations governing the kinematical analysis of the augering and concreting stages of the pile construction are introduced. After the description of the test site with the subsoil conditions and the presentation of a typical sets of parameters recorded during pile installation the results of two pile loading tests to failure are reported. A new approach for determining the depth of the soil layers boundaries, based on the statistical analysis of CPT profiles with depth, is proposed and successfully applied confirming the qualitative geological analysis of the site. A further statistical analysis is carried out to find a robust correlation between the q<sub>c</sub> of the CPT and the torque M<sub>t</sub> needed to screw in depth the auger for pile construction. Finally, virtual CPT profiles generated from the torque M<sub>t</sub> recorded during the tested piles installation are used for piles bearing capacity calculations which are compared with the results of pile loading tests. The successful comparison reported in the paper is a first step to validate the proposal to use parameters recorded during augering to calculate and/or to confirm design values of the bearing capacity.</div></div>","PeriodicalId":21857,"journal":{"name":"Soils and Foundations","volume":"65 3","pages":"Article 101631"},"PeriodicalIF":3.3,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144170332","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}

引用次数: 0

Effect of pumice content on the undrained cyclic behaviour of pumiceous soil 浮石含量对浮石土不排水循环特性的影响

IF 3.3 2区工程技术

Soils and Foundations Pub Date : 2025-05-27 DOI: 10.1016/j.sandf.2025.101629

Emma Gardiner, Mark Stringer, Misko Cubrinovski, Sean Rees, Chris McGann

{"title":"Effect of pumice content on the undrained cyclic behaviour of pumiceous soil","authors":"Emma Gardiner, Mark Stringer, Misko Cubrinovski, Sean Rees, Chris McGann","doi":"10.1016/j.sandf.2025.101629","DOIUrl":"10.1016/j.sandf.2025.101629","url":null,"abstract":"<div><div>Pumice soil grains are characterized by their vesicular nature, which leads to lightweight, crushable grains with an extremely rough and angular surface texture. These characteristics give pumiceous soils particular engineering properties that are distinct from more commonly encountered hard-grained materials, making them problematic for engineers interested in assessing the risk and potential consequences of liquefaction. Natural pumice-rich soils are found with varying amounts of pumice; however, it remains unclear how the quantity of pumice present in a soil mixture alters the behaviour. This paper investigates the effect of pumice content on cyclic resistance using blends of a hard-grained sand and a pumice sand through a series of triaxial tests. Overall, the cyclic resistance was found to reduce with increasing pumice content. Furthermore, the cyclic resistances appeared to fall into three bands: (a) little apparent reduction in cyclic resistance for pumice contents up to 40%, (b) a reduction in cyclic resistance of approximately 20% at pumice contents of 80% and higher, and (c) a transitional zone. However, despite the lower cyclic resistance, the patterns of pore pressure generation and strain development did not appear to be affected by the amount of pumice in the soil mixture.</div></div>","PeriodicalId":21857,"journal":{"name":"Soils and Foundations","volume":"65 3","pages":"Article 101629"},"PeriodicalIF":3.3,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144154377","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}

引用次数: 0

Load transfer behaviour of super long piles in multi-layer soft soil through field testing and numerical 3D FEM modelling 通过现场试验和三维有限元数值模拟研究了多层软土地基超长桩的荷载传递特性

IF 3.3 2区工程技术

Soils and Foundations Pub Date : 2025-05-23 DOI: 10.1016/j.sandf.2025.101627

Thoi Huu Tra , Thanh T. Nguyen , Thien Q. Huynh , Tatsuya Ishikawa

{"title":"Load transfer behaviour of super long piles in multi-layer soft soil through field testing and numerical 3D FEM modelling","authors":"Thoi Huu Tra , Thanh T. Nguyen , Thien Q. Huynh , Tatsuya Ishikawa","doi":"10.1016/j.sandf.2025.101627","DOIUrl":"10.1016/j.sandf.2025.101627","url":null,"abstract":"<div><div>The load transfer mechanism of pile foundation has received considerable attention over the years, the simultaneous responses that skin friction and base resistances of super-long piles (length <em>L</em> > 60 m) can have in complex soft soil, however, still need greater understanding. This study employs 3D-finite element (FE) analysis incorporating virtual interface elements to simulate the mobilised skin friction and plastic failure (slippage) of pile under ultimate loading. Static pile load tests on 4 different long and large bored piles (1–1.5 m in diameter and 70–80 m in length) embedded in the soft soil region of Mekong Delta are studied in detail through extensive instrumentation along the piles. The results are then used to not only explore load-transfer process, but also validate numerical modelling through a comprehensive process combining multiple-soil layers and −loading stages. The coupled experimental (field) − numerical results reveal the predominant contribution of skin friction exceeding 90 % of the entire bearing capacity before a drop with swift rise in base resistance when reaching a critical condition (displacement <em>s<sub>h</sub></em> > 25 mm and load pressure <em>p</em> > 14,000 kPa). The ratio of active skin friction is defined to assess the simultaneous variation of skin friction at different depths, featuring the role of pile length on the mobilisation of skin friction. The study also proposes a novel dynamic method to calculate the strength reduction factor, <em>R<sub>i</sub></em>, based on fundamental soil and load parameters, giving a vital means to advancing the use of interface elements when modelling pile foundation in soft soil.</div></div>","PeriodicalId":21857,"journal":{"name":"Soils and Foundations","volume":"65 3","pages":"Article 101627"},"PeriodicalIF":3.3,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144124583","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}

引用次数: 0

Deformation characteristics and seepage mechanism of fractured rock mass under triaxial compression process 裂隙岩体三轴压缩变形特征及渗流机理

IF 3.3 2区工程技术

Soils and Foundations Pub Date : 2025-05-22 DOI: 10.1016/j.sandf.2025.101630

Jilu Zhang , Xiaohan Zhou , Xinrong Liu , Yang Kong , Bin Xu , Lojain Suliman

{"title":"Deformation characteristics and seepage mechanism of fractured rock mass under triaxial compression process","authors":"Jilu Zhang , Xiaohan Zhou , Xinrong Liu , Yang Kong , Bin Xu , Lojain Suliman","doi":"10.1016/j.sandf.2025.101630","DOIUrl":"10.1016/j.sandf.2025.101630","url":null,"abstract":"<div><div>Understanding the gas seepage characteristics within fractured rock masses is of great significance for the prediction and prevention of hazardous gases in underground engineering. The formation is actually under a triaxial non-uniform stress state as a result of geological tectonic forces. Few studies on gas seepage take into account various stress situations. In this study, the flow characteristics of precast fractured rock masses were investigated through laboratory triaxial tests. The research results show that the volume strain of precast fracture changes from expansion to contraction with the decrease of the fracture angle under axial load. The fracture permeability decreases with the increase of axial strain before rock mass failure. After failure, the increase in permeability is not only related to the confining pressure and fracture angle but also has a significant correlation with the failure mode. Considering the triaxial non-uniform stress state, a coupled calculation model for seepage-stress-damage was established, and the calculation method was verified to effectively reflect the deformation and seepage characteristics of fractures. The lateral force on the fracture surface mainly causes the permeability of precast fractures to increase, and the increase extent of fracture permeability is negatively correlated with the fracture angle and elastic modulus.</div></div>","PeriodicalId":21857,"journal":{"name":"Soils and Foundations","volume":"65 3","pages":"Article 101630"},"PeriodicalIF":3.3,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144115826","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}

引用次数: 0

Hollow cylindrical torsional shear test simulating stress history of sand compaction pile work history 空心圆柱扭剪试验模拟砂压桩工作历程的应力历程

IF 3.3 2区工程技术

Soils and Foundations Pub Date : 2025-05-22 DOI: 10.1016/j.sandf.2025.101628

Hiroshi Yabe , Junichi Koseki

{"title":"Hollow cylindrical torsional shear test simulating stress history of sand compaction pile work history","authors":"Hiroshi Yabe , Junichi Koseki","doi":"10.1016/j.sandf.2025.101628","DOIUrl":"10.1016/j.sandf.2025.101628","url":null,"abstract":"<div><div>The Sand Compaction Pile (SCP) method is a widely utilized ground improvement technology that enhances the density of the ground by constructing sand piles through penetration and repeated withdrawal/re-driving of a casing pipe. This method is the most widely used liquefaction countermeasure method in Japan.</div><div>While the improvement effect of SCP is predominantly attributed to the resultant increase in soil density, recent studies have suggested that the stress history (such as increased lateral pressure and shear history) induced during the SCP work process also contributes significantly to its effectiveness. In order to more accurately reproduce the behavior of the ground during the construction of Sand Piles, the stress history simulating the SCP work process was applied to specimens in hollow cylindrical torsional shear tests, and the effects of the stress history were observed.</div><div>The specimens were initially consolidated with a lateral stress ratio of 0.5 (K<sub>0</sub> = 0.5). Subsequently, a stress history including increased lateral stress and cyclic shear stress was applied. Finally, liquefaction resistance was assessed through cyclic loading.</div><div>After applying the stress history, an increase in liquefaction resistance was observed in these specimens. This increase was larger than that of specimens subjected only to a lateral stress increase without the shear stress history. This increasing trend persisted even after the lateral stress was reduced following the application of stress history.</div><div>Finally, these test results were analyzed to assess the impact of stress history on liquefaction resistance by comparing them with the relationship between relative density and the liquefaction resistance.</div></div>","PeriodicalId":21857,"journal":{"name":"Soils and Foundations","volume":"65 3","pages":"Article 101628"},"PeriodicalIF":3.3,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144115825","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}

引用次数: 0

Stochastic estimation of soil hydraulic conductivity utilizing self-organizing map method 基于自组织图法的土壤导电性随机估计

IF 3.3 2区工程技术

Soils and Foundations Pub Date : 2025-05-21 DOI: 10.1016/j.sandf.2025.101601

Kyeongmo Koo, Hyunki Kim

引用次数: 0

Effects of flocculants on in–situ recycling potential of waste EPB shield muck with residual foams 絮凝剂对含残余泡沫的EPB废渣原位回收潜力的影响

IF 3.3 2区工程技术

Soils and Foundations Pub Date : 2025-05-16 DOI: 10.1016/j.sandf.2025.101625

Yao Lu , Ming Huang , Jim S. Shiau , Fengwen Lai , Liqian Peng

{"title":"Effects of flocculants on in–situ recycling potential of waste EPB shield muck with residual foams","authors":"Yao Lu , Ming Huang , Jim S. Shiau , Fengwen Lai , Liqian Peng","doi":"10.1016/j.sandf.2025.101625","DOIUrl":"10.1016/j.sandf.2025.101625","url":null,"abstract":"<div><div>The in–situ recycling technique offers a promising solution for the efficient management of the escalating volumes of waste muck or slurry generated during shield tunneling. While foam is extensively utilized for soil conditioning in earth pressure balance (EPB) tunneling, the effects of organic and inorganic flocculants on the in–situ recycling potential of waste EPB shield muck containing residual foams remain underexplored. To bridge this gap, laboratory experiments were conducted using four flocculants: cationic polyacrylamide (CPAM), nonionic polyacrylamide (NPAM), anionic polyacrylamide (APAM), and polyaluminum chloride (PACL), with an enhanced flocculation and press–filtration apparatus. The defoaming–flocculation–dewatering behavior of waste EPB shield muck was systematically investigated by evaluating key parameters, including residual foam height, defoaming ratio, antifoaming ratio, total suspended solids, turbidity, moisture content, and zeta potential, while accounting for both muck dry mass and fines content. Moreover, the microscopic structure of flocculates and filter cakes was characterized using nanoparticle size analysis and scanning electron microscopy. The experimental results reveal that CPAM exhibits constrained flocculation and dewatering efficiency, primarily attributed to diminished charge neutralization resulting from residual anionic surfactants. In contrast, PACL demonstrates superior dewatering performance compared to NPAM and APAM, but exhibits the lowest flocculation and foam–suppression efficiency. Additionally, a consistent linear negative correlation is identified between the flocculation and dewatering indices of EPB shield muck, independent of the flocculant type, whether organic or inorganic.</div></div>","PeriodicalId":21857,"journal":{"name":"Soils and Foundations","volume":"65 3","pages":"Article 101625"},"PeriodicalIF":3.3,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144069222","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}

引用次数: 0

Performance of screw piles in bio-stabilized slope based on field monitoring and finite element modelling 基于现场监测和有限元模拟的生物稳定边坡螺旋桩性能研究

IF 3.3 2区工程技术

Soils and Foundations Pub Date : 2025-05-05 DOI: 10.1016/j.sandf.2025.101626

Apiniti Jotisankasa , Korakot Tanyacharoen , Susit Chaiprakaikeow , Washirawat Praphatsorn , Sony Pramusandi , Avishek Shrestha , Satoshi Nishimura

{"title":"Performance of screw piles in bio-stabilized slope based on field monitoring and finite element modelling","authors":"Apiniti Jotisankasa , Korakot Tanyacharoen , Susit Chaiprakaikeow , Washirawat Praphatsorn , Sony Pramusandi , Avishek Shrestha , Satoshi Nishimura","doi":"10.1016/j.sandf.2025.101626","DOIUrl":"10.1016/j.sandf.2025.101626","url":null,"abstract":"<div><div>A novel slope stabilization technique was recently developed incorporating screw piles with vegetated flapped soilbags. These screw piles are subjected to lateral stress from soil slope and their deformation can be difficult to quantify, given the fluctuating pore-water pressure and heterogeneous soil conditions. This study proposes the use of in-situ spectral analysis of surface waves (SASW) test to estimate the small-strain soil stiffness which can then be factored to calculate the lateral deformation of the pile in finite element modelling based on prescribed pore-water pressure change. A case of bioengineered slope in Kanchanaburi province, Western Thailand was studied, involving field monitoring of pile head tilt, pore-water pressure, suction, and soil moisture over one year. The findings revealed pile head tilt of up to 0.2 degrees in response to rainfall and rise in pore-water pressure and soil moisture over one year period. A series of finite element modelling were performed using factored shear moduli from in-situ SASW test and the monitored pore-water pressure variation to reproduce the amount of pile head tilting as observed in the field during one year. It was revealed that by assuming operational shear modulus ranging between 0.0075 and 0.01 times small-strain soil stiffness, a satisfactory agreement was obtained between field measurement and analysis of pile movement. This findings provides a basis for further studies on performance of bioengineered slope utilizing screw piles.</div></div>","PeriodicalId":21857,"journal":{"name":"Soils and Foundations","volume":"65 3","pages":"Article 101626"},"PeriodicalIF":3.3,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143906745","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}

引用次数: 0

Effect of gravity on liquefaction behavior 重力对液化行为的影响

IF 3.3 2区工程技术

Soils and Foundations Pub Date : 2025-05-02 DOI: 10.1016/j.sandf.2025.101617

R. Sukhumkitcharoen , J. Koseki , M. Otsubo , T. Morimoto

{"title":"Effect of gravity on liquefaction behavior","authors":"R. Sukhumkitcharoen , J. Koseki , M. Otsubo , T. Morimoto","doi":"10.1016/j.sandf.2025.101617","DOIUrl":"10.1016/j.sandf.2025.101617","url":null,"abstract":"<div><div>Attaining a fully liquefied state with zero effective stress in laboratory element tests is inherently challenging, as this state is typically achieved only in the upper layers of specimens, while the lower layers are still influenced by residual gravitational forces (or self-weight). This challenge has highlighted concerns regarding the potential overestimation of the liquefaction resistance in laboratory-based assessments. In response to this, the present study introduces an advanced bi-axial apparatus designed for testing under both dry and submerged conditions, employing circular plastic rods to enable an analysis with detailed images. Furthermore, discrete element method (DEM) simulations are conducted to replicate analogous environments under varying gravity conditions. The results demonstrate that the configuration of the apparatus, which utilizes lighter materials, significantly diminishes the gravity-induced stress gradient, achieving near-zero effective mean stress in the submerged condition. Both laboratory tests and DEM simulations consistently show similar trends under different gravity settings, such as enhanced contractive behavior, reduced remaining mean stress, and reduced remaining stiffness during the liquefied state in lower gravity environments, resulting in a reduction in liquefaction resistance. These characteristics are attributed to the stimulated loss of inter-particle contacts and an increased number of unstable particles, resulting in weakened void- and contact-based fabrics against cyclic loading under lower gravity conditions. Based on the current testing conditions, a correction factor of approximately 0.6 to 0.8 is advised for bi-axial tests conducted at standard gravity (1<em>g</em>) to convert the liquefaction resistance measured in the laboratory to that suitable for practical applications.</div></div>","PeriodicalId":21857,"journal":{"name":"Soils and Foundations","volume":"65 3","pages":"Article 101617"},"PeriodicalIF":3.3,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143898643","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}

引用次数: 0

Effect of suffusion and self-filtration on mechanical behavior of well-graded sands 浸渍和自过滤对分级好的砂土力学特性的影响

IF 3.3 2区工程技术

Soils and Foundations Pub Date : 2025-05-01 DOI: 10.1016/j.sandf.2025.101622

Jitrakon Prasomsri , Ratamanee Nuntasarn , Suched Likitlersuang , Akihiro Takahashi

{"title":"Effect of suffusion and self-filtration on mechanical behavior of well-graded sands","authors":"Jitrakon Prasomsri , Ratamanee Nuntasarn , Suched Likitlersuang , Akihiro Takahashi","doi":"10.1016/j.sandf.2025.101622","DOIUrl":"10.1016/j.sandf.2025.101622","url":null,"abstract":"<div><div>Suffusion in well-graded sands is a significant concern in geotechnical engineering, potentially leading to malfunctions or failures in soil slopes, earth dams, and their foundations. In this paper, two internally unstable well-graded sands of various densities are subjected to seepage tests and consolidated undrained triaxial compression tests using an in-house developed triaxial permeameter. The tests explore the impact of the uniformity coefficient (<em>C<sub>u</sub></em>), initial density, and hydraulic loading amplitude on suffusion. The effect of suffusion on the undrained mechanical behavior is investigated. The results indicate that specimens with smaller <em>C<sub>u</sub></em> and higher density exhibit a larger onset hydraulic gradient for suffusion, resulting in a smaller eroded mass and fewer changes in permeability. Increasing the hydraulic loading amplitude leads to a larger eroded mass and more changes in permeability. Compared to non-eroded specimens, eroded specimens exhibit reduced shear strength and stiffness during compression tests, increased strain-softening, and contractive behavior. A post-test particle-size distribution analysis shows a significant increase in particles smaller than 0.425 mm within the eroded specimens’ midsection, in contrast to a reduction in the top section. This leads to clogging in the midsection, due to seepage, and a non-uniform particle-size distribution throughout the specimens. Suffusion also causes a decrease in mean effective stress at the critical state in the specific volume-mean effective stress plane.</div></div>","PeriodicalId":21857,"journal":{"name":"Soils and Foundations","volume":"65 3","pages":"Article 101622"},"PeriodicalIF":3.3,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143891131","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}

引用次数: 0