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浙江大学学报（英文版）（A辑：应用物理和工程）
浙江大学学报（英文版）（A辑：应用物理和工程）

杨卫

月刊

1673-565X

jzus_zzy@zju.edu.cn

0571-87952783；87952331

310027

杭州浙大路38号浙大学报英文版编辑部

浙江大学学报（英文版）（A辑：应用物理和工程）/Journal Journal of Zhejiang University Science A：Applied Physics & EngineeringCSCDCSTPCD北大核心EISCI
查看更多>>JZUS-A:《浙大学报(英文版)(A辑：应用物理和工程)》Journal of Zhejiang University SCIENCE A focuses on Applied Physics & Mathematics, Civil Engineering, Environmental, Energy, Materials, Chemical Engineering, Mechanical, EEE, Computer & Information Sciences. JZUS-A has been indexed & abstracted by Science Citation Index-Expanded (SCI-E), Ei Compendex, CA, SA, AJ, ZM, CSA (AHTD/ AI/ AP/ ASF/ CDCD/ CE/ CI/ CIS/ Corr/ C-WC/ EC/ EMA/ MBF/ ESPM/ MD/ MG/ OA/ OT/ SS/ WR). JZUS-A welcomes the high-quality research articles, reviews, science letters, report, news & views etc from all over the world, and also welcomes your online submission at or by to get more information about JZUS-A, thanks.
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    Soil particle-fluid interaction problems in geotechnical engineering oriented towards sustainability

    Jie YANGZhen-Yu YINMing XIAO
    971-973页
      原文链接:
    • NETL
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    Effect of dry-wet cycles on the mechanical properties and microscopic characteristics of fine breccia soil from karst areas

    Xin LIHanqing CHENDong SUXiangsheng CHEN...
    974-990页
    查看更多>>摘要：The quality of the railway subgrade is directly related to the fill soil structure,which,in turn,is determined by the local physical and chemical environment.A karst environment,with its frequent rainfall,promotes the dissolution of soluble rocks and underground transportation of solutes,altering the soil structure and performance.To investigate these alterations,we analyzed the properties of underground soil from highly developed karst areas.Fine breccia soil from karst regions was tested to assess its macroscopic mechanical properties and microstructural features,for differing initial water contents and compaction levels.Samples were subjected to simulated rainfall conditions through dry-wet cycles,and then underwent triaxial shear and electron microscopy tests.From these data,a micro-to-macro correlation model and a normalization model were developed.The findings suggest that the resistance of fine angular breccia soil to degradation during dry-wet cycles can be enhanced through high-pressure compaction and by maintaining a moisture content close to 15.6％.Increasing the degree of compaction improves the particle size distribution and the density of the soil skeleton.This is advantageous for minimizing soil particle erosion,thereby ensuring the strong performance of railway subgrades in karst areas with frequent rainfall.
      原文链接:
    • NETL
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    Waterproofing performance of longitudinal segmental tunnel joints under external loads:a full-scale experimental investigation

    Dongmei ZHANGSirui CHENZhongkai HUANGZhaoyuan ZHANG...
    991-1005页
    查看更多>>摘要：When subjected to external loads from the ground and nearby construction,tunnel segmental lining joints are prone to damaging deformation.This can result in water leakage into tunnels,posing great safety risks.With this issue in mind,we conducted a series of full-scale tests to study the effects of external loads on the waterproofing performance of longitudinal joints.A customized rig for testing segmental joints was developed to assess the effect of loading magnitude,eccentricity,and loading-unloading-reloading cycles on waterproofing performance.Additionally,the relationship between joint force,sealing gasket deformation,and waterproofing pressure was investigated.The results indicate that:(1) the sealing gasket's compression rapidly decreases as external loads increase,which weakens the waterproofing capacity of the joint;(2) the watertightness limit dramatically decreases as the bending moment increases;(3) a loading-unloading-reloading cycle leads to degradation of the joint's waterproofing performance.The findings of this study provide a reference for subsequent waterproofing design of segmental tunnel joints,helping ensure the safety of tunnels throughout their operational lifespans.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    Investigation on the resilient modulus of soil mixture at various water contents and coarse grain contents under train moving loads

    Yu SUYue ZHANGJunyi DUANJianglin GAO...
    1006-1017,中插1-中插3页
    查看更多>>摘要：Interlayer soil in railway substructures is characterized by a fine/coarse soil mixture.Considering that the resilient modulus Mr of the mixture is influenced by the microstructure of fine soil,it is worthwhile to investigate this aspect further.In this study,the microstructure of fines was explored by mercury intrusion porosimetry (MIP),and its influence on the Mr of the mixture was studied by multi-stage dynamic triaxial tests with varying deviator stress amplitudes σd.The results showed a fine matrix fabric obtained at water contents of fine soil wf=17.6％ and 13.7％ (>the plastic limit of fine soil wp=12％),and a fine aggregate fabric identified at wf=10.6％ (<wp=12％).Interestingly,the influences of wf and σd on the Mr of the mixture were observed:the rise in σd contributed to a decline in Mr when wf>wp but to an increase in Mr when wf<wp.It was concluded that,for the fine matrix fabric (wf>wp),increasing σd induced a reduction in Mr,while for the fine aggregate fabric (wf<wp),increasing σd gave rise to the growth of Mr.The distinct Mr-σd behaviors for these two fabrics were explained by the competing influences between soil hardening upon loading and soil rebounding upon unloading.For the fine matrix fabric (wf>wp),considering its high deformability,the rebounding effect on Mr outweighed the hardening effect,and thus a decline in Mr occurred with the growth of σd.Conversely,for the fine aggregate fabric (wf<wp),the rebounding effect on Mr was secondary compared with the hardening effect based on the consideration of its low deformability,and thus an increase in Mr was observed with rising σd.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    Permeability of structured porous media:numerical simulations and microfluidic models

    Shaokai NIEPengfei LIUKexin CHENWenyuan WANG...
    1018-1036,中插4-中插9页
    查看更多>>摘要：In this study,the permeability of structured porous media with the microfluidic model is experimentally and numerically determined,and compared with the classic Kozeny-Carman (KC) equation.The Reynolds number (Re) varies from 0.83 to 142.98.It is observed that the threshold of the Reynolds number is 1.When Re is below the threshold,the permeability is independent of the Reynolds number.When Re is over this threshold,the viscous force plays a dominant role and the permeability decreases with the Reynolds number increment.The permeability also rises with the diameter increment.With the same micropillar diameter,the microfluidic model with a triangular pillar arrangement yields 4.5％-7.4％ lower permeability than that with a square pillar arrangement.The tortuosity obtained by numerical simulation in the triangular-arrangement model is 5.1％-7.9％ higher than that in the square-arrangement model.Based on the arrangement of micropillars,a tortuosity model is proposed for quasi-two-dimensional microfluidic models.There is an inverse relationship between permeability and tortuosity.In addition,the permeability generated by numerical simulation is consistent with that obtained experimentally.However,the permeability estimated by the classic KC equation roughly agrees with experimental results when the porosity is between 0.50 and 0.60.A model proposed in this study is suitable for predicting the permeability of microfluidic models.Furthermore,anisotropy induced by the tilt angle (0°-90°) of a model rectangular micropillar arrangement causes preferential flow and decreases the effective porosity.When the tilt angle increases from 0° to 90°,the tortuosity declines from 2.04 to 1.03,causing the permeability to rise from 1.0×10-11 to 4.3×10-11 m2.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    Mechanical properties of segmental joints strengthened by assembled reinforcement structures for shield tunnel linings

    Zhiguo YANSihang AIXia YANGLong ZHOU...
    1037-1050页
    查看更多>>摘要：We develop assembled reinforcement structures (ARSs) composed of connection parts,connecting rods,and straight bolts to strengthen segmental joints in the lining of shield tunnels.Through full-scale bending experiments and numerical simulations,we investigate the deformation and failure characteristics of segmental joints strengthened by ARSs,and propose a novel optimization method for ARSs.The experimental results show that the ARSs can effectively limit the opening of a segmental joint,but also that separation can occur during loading if the connection between the ARSs and segments is not designed properly.Importantly,this connection can be improved by embedding anchor parts in the concrete.In numerical modeling,we investigate the failure modes of segmental joints strengthened by ARSs for both positive bending and negative bending loading cases.In the case of positive bending loading,first the concrete around the anchor parts cracks,and subsequently the concrete on the external side of the joint is crushed.The joint failure is caused by the crushing of concrete on the external side of the joint.While the un-strengthened segmental joint fails with an opening of 5.884 mm,the strengthened segmental joint only opens by 0.288 mm under the same loading,corresponding to a reduction of 95.1％.In the case of negative bending loading,the concrete around the anchor parts first cracks,and then the amount of joint opening exceeds a limiting value for waterproofing (6 mm),i.e.,the joint's failure is caused by water leakage.While the opening of the un-strengthened segmental joint is 9.033 mm and experiences waterproofing failure,the opening of the strengthened segmental joint is only 2.793 mm under the same loading,corresponding to a reduction of 69.1％.When constructing a new shield tunnel,anchor parts could be embedded in the concrete segments in tandem with ARSs for improved resistance to joint opening.For existing shield tunnel linings,anchor parts cannot be embedded in the concrete segments;therefore,the connections between the ARSs and concrete need to be optimized to strengthen the segmental joint.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

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    后插1-后插8页
      原文链接:
    • NETL
    • NSTL
    • 万方数据