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Jinchang Wang
Zhejiang University

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Conference paper
Published: 24 July 2021 in Advancements in Geotechnical Engineering
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An optimized finite element method (FEM) based on layer structure method has been put forward, which combined the nonlinear behavior of both the structure and the soil surrounding. The lining is simulated with solid element and meshed finely, while the longitudinal joint between segments is modeled by 6-node line interface element. Nonlinear mechanical behaviors of soil, concrete, reinforcement and interfaces are considered with advanced material models. A parameter study is conducted to reveal the influence of several concerning parameters such as the rotation angle of the ring, the width of surface loading, the offset of surface loading and the depth of the tunnel. To better illustrate the result, several indexes including maximum crack width, crack index and crack ratio is introduced to evaluate and forecast crack behavior. The results show that the crack-resistant ability of the tunnel is slightly enhanced as the rotation angle of the ring increases. A more unfavorable influence can be brought to linings by the shift of the surface loading when its offsetting is smaller than 30 m in the case. However, the influence on segment cracking caused by the change of the tunnel depth is complicated when stress redistribution after tunnel excavation is considered, and there is an unfavorable buried depth when the crack ratio reaches maximum. Finally, a simple fitting equation, which is based on the previously mentioned numerical simulation, is provided to establish the relationship between the horizontal ovalisation and the crack ratio.

ACS Style

Jiachong Xie; Jinchang Wang; Weiming Huang; Zhongxuan Yang; Rongqiao Xu. Numerical Investigation on Cracking Behavior of Shield Tunnel Lining Subjected to Surface Loading: A Parametric Study. Advancements in Geotechnical Engineering 2021, 65 -79.

AMA Style

Jiachong Xie, Jinchang Wang, Weiming Huang, Zhongxuan Yang, Rongqiao Xu. Numerical Investigation on Cracking Behavior of Shield Tunnel Lining Subjected to Surface Loading: A Parametric Study. Advancements in Geotechnical Engineering. 2021; ():65-79.

Chicago/Turabian Style

Jiachong Xie; Jinchang Wang; Weiming Huang; Zhongxuan Yang; Rongqiao Xu. 2021. "Numerical Investigation on Cracking Behavior of Shield Tunnel Lining Subjected to Surface Loading: A Parametric Study." Advancements in Geotechnical Engineering , no. : 65-79.

Journal article
Published: 04 June 2021 in Materials
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This study has investigated the impact of graphene oxide (GO) in enhancing the performance properties of an asphalt binder. The control asphalt binder (60/70 PEN) was blended with GO in contents of 0%, 0.5%, 1%, 1.5%, 2%, and 2.5%. The permanent deformation behavior of the modified asphalt binders was evaluated based on the zero shear viscosity (ZSV) parameter through a steady shear test approach. Superpave fatigue test and the linear amplitude sweep (LAS) method were used to evaluate the fatigue behavior of the binders. A bending beam rheometer (BBR) test was conducted to evaluate the low-temperature cracking behavior. Furthermore, the storage stability of the binders was investigated using a separation test. The results of the ZSV test showed that GO considerably enhanced the steady shear viscosity and ZSV value, showing a significant contribution of the GO to the deformation resistance; moreover, GO modification changed the asphalt binder’s behavior from Newtonian to shear-thinning flow. A notable improvement in fatigue life was observed with the addition of GO to the binder based on the LAS test results and Superpave fatigue parameter. The BBR test results revealed that compared to the control asphalt, the GO-modified binders showed lower creep stiffness (S) and higher creep rate (m-value), indicating increased cracking resistance at low temperatures. Finally, the GO-modified asphalt binders exhibited good storage stability under high temperatures.

ACS Style

Abbas Adnan; Chaofeng Lü; Xue Luo; Jinchang Wang. Impact of Graphene Oxide on Zero Shear Viscosity, Fatigue Life and Low-Temperature Properties of Asphalt Binder. Materials 2021, 14, 3073 .

AMA Style

Abbas Adnan, Chaofeng Lü, Xue Luo, Jinchang Wang. Impact of Graphene Oxide on Zero Shear Viscosity, Fatigue Life and Low-Temperature Properties of Asphalt Binder. Materials. 2021; 14 (11):3073.

Chicago/Turabian Style

Abbas Adnan; Chaofeng Lü; Xue Luo; Jinchang Wang. 2021. "Impact of Graphene Oxide on Zero Shear Viscosity, Fatigue Life and Low-Temperature Properties of Asphalt Binder." Materials 14, no. 11: 3073.

Journal article
Published: 17 May 2021 in Tunnelling and Underground Space Technology
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An analytical model was established through modeling the segmental lining by a curved beam, its interaction with the surrounding soils by a tensionless Winkler foundation, and the joints between segments by nonlinear rotational springs. The state space method was then combined with the Newton–Steffensen iterative procedure to formulate and solve the equations in which a tensionless foundation and nonlinear joints were engaged. Numerical examples were presented to illustrate the performance of the proposed new method through a comparison with existing methods from the literature. A parametric study was presented to reveal the influences of soil resistance coefficient and cross-sectional properties on the mechanical behavior of the lining. It has been shown that the new method is convenient and accurate to consider the interaction of lining with the surrounding soils and nonlinear behavior of joints, and thus provides an alternative approach to the design and analysis of this type of lining.

ACS Style

W.M. Huang; J.C Wang; Z.X. Yang; R.Q. Xu. Analytical model for segmental tunnel lining with nonlinear joints. Tunnelling and Underground Space Technology 2021, 114, 103994 .

AMA Style

W.M. Huang, J.C Wang, Z.X. Yang, R.Q. Xu. Analytical model for segmental tunnel lining with nonlinear joints. Tunnelling and Underground Space Technology. 2021; 114 ():103994.

Chicago/Turabian Style

W.M. Huang; J.C Wang; Z.X. Yang; R.Q. Xu. 2021. "Analytical model for segmental tunnel lining with nonlinear joints." Tunnelling and Underground Space Technology 114, no. : 103994.

Journal article
Published: 06 June 2020 in International Journal of Mechanical Sciences
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Based on the curved Euler beam theory, an analytical solution is proposed for a jointed shield tunnel lining reinforced by secondary linings, which can be idealized as a partial-interaction composite curved beam. The effect of joints and the interaction between linings and surrounding soils are simulated by a series of linear mechanical springs and Winkler type springs, respectively. The solutions for the internal forces and deformations can be derived by the state space method for conditions involving arbitrary loadings and variable joint distributions. The capability of the proposed analytical solution is verified by the finite element method and other existing analytical solutions. Furthermore, the effect of bending-direction-dependent joint stiffness is discussed, and the variation trends of internal forces and deformations, varying with soil reaction stiffness, are examined under different joint stiffness conditions.

ACS Style

Q.J. Chen; J.C. Wang; W.M. Huang; Z.X. Yang; R.Q. Xu. Analytical solution for a jointed shield tunnel lining reinforced by secondary linings. International Journal of Mechanical Sciences 2020, 185, 105813 .

AMA Style

Q.J. Chen, J.C. Wang, W.M. Huang, Z.X. Yang, R.Q. Xu. Analytical solution for a jointed shield tunnel lining reinforced by secondary linings. International Journal of Mechanical Sciences. 2020; 185 ():105813.

Chicago/Turabian Style

Q.J. Chen; J.C. Wang; W.M. Huang; Z.X. Yang; R.Q. Xu. 2020. "Analytical solution for a jointed shield tunnel lining reinforced by secondary linings." International Journal of Mechanical Sciences 185, no. : 105813.

Journal article
Published: 19 February 2020 in Materials
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The recovery property of asphalt binders plays an important role in the performance and service life of asphalt pavements. Since the internal stress is the driving force for the recovery of asphalt binders, the accurate measurement of the internal stress is full of significance. Based on this rationale, this paper aims to measure the internal stress of asphalt binders using a creep and step-loading recovery (CSR) test and characterizing the recovery behaviors by the internal stress. One base asphalt binder and one styrene–butadiene–styrene (SBS)-modified binder are selected in this study. The key elements of the CSR test are carefully designed and its accuracy is verified in three aspects, including the loading conditions, the effect of disturbance by step-loads, and accuracy of measured internal stress. Then, a kinetics-based recovery model is proposed to evaluate and predict the recovery properties of asphalt binders from its causal relationship. The constant-rate recovery activation energy indicates a major difference with nondestructive and destructive loading conditions, while the fast-rate recovery activation energy keeps almost constant regardless of the loading conditions. After that, the healing activation energy is calculated by using the kinetics-based recovery model and the results indicate that SBS modified asphalt binder shows better healing abilities than a base binder.

ACS Style

Fuquan Ma; Xue Luo; Zhiyi Huang; Jinchang Wang. Characterization of Recovery in Asphalt Binders. Materials 2020, 13, 920 .

AMA Style

Fuquan Ma, Xue Luo, Zhiyi Huang, Jinchang Wang. Characterization of Recovery in Asphalt Binders. Materials. 2020; 13 (4):920.

Chicago/Turabian Style

Fuquan Ma; Xue Luo; Zhiyi Huang; Jinchang Wang. 2020. "Characterization of Recovery in Asphalt Binders." Materials 13, no. 4: 920.

Journal article
Published: 24 June 2019 in Materials
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A method was developed for solving the relaxation modulus of high viscosity asphalt sand (HVAS) based on the three-point bending creep test, and was verified by comparison with experimental results. In this method, firstly, a transcendental equation was obtained by the convolution, and then equations were obtained by Taylor’s formula, which were solved by Mathmatica to obtain the relaxation modulus by Newton’s method. Subsequently, the laboratory investigations of the viscoelastic parameters of the Burgers model for the HVAS by three-point bending creep tests were carried out. In addition, the method was verified by comparing the relaxation moduli with the indoor relaxation experiments. Results showed that the numerical calculation and the test data were in good agreement, and the relaxation characteristics of the HVAS were reflected more accurately. The method can be used to study the relaxation characteristics of the asphalt mixtures effectively. In addition, this study provides a research basis for road crack prevention.

ACS Style

Yazhen Sun; Zhangyi Gu; Jinchang Wang; Xuezhong Yuan. Research of Method for Solving Relaxation Modulus Based on Three-Point Bending Creep Test. Materials 2019, 12, 2021 .

AMA Style

Yazhen Sun, Zhangyi Gu, Jinchang Wang, Xuezhong Yuan. Research of Method for Solving Relaxation Modulus Based on Three-Point Bending Creep Test. Materials. 2019; 12 (12):2021.

Chicago/Turabian Style

Yazhen Sun; Zhangyi Gu; Jinchang Wang; Xuezhong Yuan. 2019. "Research of Method for Solving Relaxation Modulus Based on Three-Point Bending Creep Test." Materials 12, no. 12: 2021.

Journal article
Published: 22 March 2019 in Materials
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To study the dynamic response of saturated asphalt pavement under moving load and temperature load, 3-D finite element models for asphalt pavements with hydro-mechanical coupling and thermal-hydro-mechanical coupling were built based on the porous media theory and Biot theory. First, the asphalt pavement structure was considered as an ideal saturated fluid⁻solid biphasic porous medium. Following this, the spatial distribution and the change law of the pore-water pressure with time, the transverse stress, and the vertical displacement response of the asphalt pavement under different speeds, loading times, and temperatures were investigated. The simulation results show that both the curves of the effective stress and the pore-water pressure versus the external loads have similar patterns. The damage of the asphalt membrane is mainly caused by the cyclic effect of positive and negative pore-water pressure. Moreover, the peak value of pore-water pressure is affected by the loading rate and the loading time, and both have positive exponential effects on the pore-water pressure. In addition, the transverse stress of the upper layer pavement is deeply affected by the temperature load, which is more likely to cause as transverse crack in the pavement, resulting in the formation of temperature cracks on the road surface. The vertical stress at the middle point in the upper layer of the saturated asphalt pavement, under the action of the temperature load and the driving load, shows a single peak.

ACS Style

Yazhen Sun; Rui Guo; Lin Gao; Jinchang Wang; Xiaochen Wang; Xuezhong Yuan. Study on Dynamic Response Characteristics of Saturated Asphalt Pavement under Multi-Field Coupling. Materials 2019, 12, 959 .

AMA Style

Yazhen Sun, Rui Guo, Lin Gao, Jinchang Wang, Xiaochen Wang, Xuezhong Yuan. Study on Dynamic Response Characteristics of Saturated Asphalt Pavement under Multi-Field Coupling. Materials. 2019; 12 (6):959.

Chicago/Turabian Style

Yazhen Sun; Rui Guo; Lin Gao; Jinchang Wang; Xiaochen Wang; Xuezhong Yuan. 2019. "Study on Dynamic Response Characteristics of Saturated Asphalt Pavement under Multi-Field Coupling." Materials 12, no. 6: 959.

Journal article
Published: 07 December 2018 in Materials
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In order to represent the mechanical response laws of high-modulus asphalt pavement (HMAP) faithfully and objectively, the viscoelasticity of high-modulus asphalt mixture (HMAM) was considered, and the viscoelastic mechanical responses were calculated systematically based on moving load by numerical simulations. The performances of the HMAP in resistance to the deformation and the cracking at the bottom layer were compared with the ordinary asphalt pavement. Firstly, Lubao and Honeywell 7686 (H7686) were selected as the high modulus modifiers. The laboratory investigations of Asphalt mix-70 penetration, Asphalt mix-SBS (styrene-butadiene-styrene), HMAM-Lubao and HMAM-H7686 were carried out by dynamic modulus tests and wheel tracking tests. The conventional performances related to the purpose of using the HMAM were indicated. The master curves of the storage moduli were obtained and the viscoelastic parameters were fitted based on viscoelastic theories. Secondly, 3D pavement models based on moving loads for the viscoelastic structures were built using the non-linear finite element software ABAQUS. The wheel path was discretized in time and space to apply the Haversine wave load, and then the mechanical responses of four kinds of asphalt pavement were calculated. Finally, the sensitivity analysis was carried out. The results showed that the addition of the high modulus modifiers can improve the resistance to high-temperature rutting of the pavements. Except for the tensile strain and stress at the bottom of the underlayer, other responses decreased with the increases of the dynamic moduli and the change laws of the tensile strain and stress were affected by the range of the dynamic modulus. The tensile stress at the bottom of the asphalt layer would be too large if the modulus of the layer were too large, and a larger tensile strain would result. Therefore, the range of the modulus must be restricted to avoid the cracking due to excessive tension when using the HMAM. The resistance of the HMAP to deformation was better and the HMAP was less sensitive to load changes and could better withstand the adverse effects inflicted by heavy loads.

ACS Style

Yazhen Sun; Bincheng Gu; Lin Gao; Linjiang Li; Rui Guo; Qingqing Yue; Jinchang Wang. Viscoelastic Mechanical Responses of HMAP under Moving Load. Materials 2018, 11, 2490 .

AMA Style

Yazhen Sun, Bincheng Gu, Lin Gao, Linjiang Li, Rui Guo, Qingqing Yue, Jinchang Wang. Viscoelastic Mechanical Responses of HMAP under Moving Load. Materials. 2018; 11 (12):2490.

Chicago/Turabian Style

Yazhen Sun; Bincheng Gu; Lin Gao; Linjiang Li; Rui Guo; Qingqing Yue; Jinchang Wang. 2018. "Viscoelastic Mechanical Responses of HMAP under Moving Load." Materials 11, no. 12: 2490.

Journal article
Published: 30 October 2018 in Applied Sciences
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The stress-absorption layer in cement concrete pavement delays the development of reflection cracks and is good at fatigue resistance. Laboratory investigations of the anti-crack performance of the high viscous asphalt sand stress-absorption layer (HVASAL) and rubber asphalt stress-absorption layer (RASAL) were carried out by force-controlled fatigue crack propagation tests, for which three types of overlay structures with three types of pre-crack (i.e., the middle crack, the side crack, and the 45° inclined crack) were designed. A probability model was established to describe the propagation of the fatigue cracks. The fatigue crack propagation, the fatigue life, the crack propagation rate, and the crack propagation mechanism of the three types of overlay structure were compared and analyzed. The results show that the stress-absorption layers have good anti-crack fatigue performance, and that the RASAL is better than the HVASAL. The crack propagation patterns of the three types of overlay structure were found. In the double logarithmic coordinate, the curves of the three types of cracks are straight lines with different intercepts and slopes. The probability model quantifies the relationship between the crack propagation rate and ∆K. The influences of the three types of crack on the fatigue properties of the asphalt overlays are different.

ACS Style

Yazhen Sun; Ting Yan; Changyu Wu; Xiaofang Sun; Jinchang Wang; Xuezhong Yuan. Analysis of the Fatigue Crack Propagation Process of the Stress-Absorption Layer of Composite Pavement Based on Reliability. Applied Sciences 2018, 8, 2093 .

AMA Style

Yazhen Sun, Ting Yan, Changyu Wu, Xiaofang Sun, Jinchang Wang, Xuezhong Yuan. Analysis of the Fatigue Crack Propagation Process of the Stress-Absorption Layer of Composite Pavement Based on Reliability. Applied Sciences. 2018; 8 (11):2093.

Chicago/Turabian Style

Yazhen Sun; Ting Yan; Changyu Wu; Xiaofang Sun; Jinchang Wang; Xuezhong Yuan. 2018. "Analysis of the Fatigue Crack Propagation Process of the Stress-Absorption Layer of Composite Pavement Based on Reliability." Applied Sciences 8, no. 11: 2093.

Journal article
Published: 12 September 2018 in Materials
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The three-point bending fatigue tests were carried out in order to accurately predict the fatigue life of an asphalt mixture based on the plateau value (PV) of the dissipated strain energy ratio (DSER). The relations of the dissipated strain energy (DSE) to the stress-strength ratio, temperature and loading rate were studied, and the constructions of the mathematical models of DSE and DSER were completed based on the change laws of the DSE. The relation of the fatigue life to the PV was determined based on the analysis of damage evolution, based on which the fatigue equation was established and used to predict the fatigue life. The results show that the change laws of DSE and DSER can be well described by the proposed mathematical models. The PV is defined as the average value of the DSER in the second stage and the fatigue life decreases in power function with the increase of PV, based on which the fatigue equation of Nf = A(PV)B was established, and the established fatigue equation is very close to that is used in the MEPDG. The fatigue equation can well predict the fatigue life asphalt mixture.

ACS Style

Yazhen Sun; Chenze Fang; Jinchang Wang; Zuoxin Ma; YouLin Ye. Energy-Based Approach to Predict Fatigue Life of Asphalt Mixture Using Three-Point Bending Fatigue Test. Materials 2018, 11, 1696 .

AMA Style

Yazhen Sun, Chenze Fang, Jinchang Wang, Zuoxin Ma, YouLin Ye. Energy-Based Approach to Predict Fatigue Life of Asphalt Mixture Using Three-Point Bending Fatigue Test. Materials. 2018; 11 (9):1696.

Chicago/Turabian Style

Yazhen Sun; Chenze Fang; Jinchang Wang; Zuoxin Ma; YouLin Ye. 2018. "Energy-Based Approach to Predict Fatigue Life of Asphalt Mixture Using Three-Point Bending Fatigue Test." Materials 11, no. 9: 1696.

Journal article
Published: 03 May 2018 in Materials
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Laboratory predictions for the fatigue life of an asphalt mixture under cyclic loading based on the plateau value (PV) of the permanent deformation ratio (PDR) were carried out by three-point bending fatigue tests. The influence of test conditions on the recovery ratio of elastic deformation (RRED), the permanent deformation (PD) and PDR, and the trends of RRED, PD, and PDR were studied. The damage variable was defined by using PDR, and the relation of the fatigue life to PDR was determined by analyzing the damage evolution process. The fatigue equation was established based on the PV of PDR and the fatigue life was predicted by analyzing the relation of the fatigue life to the PV. The results show that the RRED decreases with the increase of the number of loading cycles, and the elastic recovery ability of the asphalt mixture gradually decreases. The two mathematical models proposed are based on the change laws of the RRED, and the PD can well describe the change laws. The RRED or the PD cannot well predict the fatigue life because they do not change monotonously with the fatigue life, and one part of the deformation causes the damage and the other part causes the viscoelastic deformation. The fatigue life decreases with the increase of the PDR. The average PDR in the second stage is taken as the PV, and the fatigue life decreases in a power law with the increase of the PV. The average relative error of the fatigue life predicted by the fatigue equation to the test fatigue life is 5.77%. The fatigue equation based on PV can well predict the fatigue life.

ACS Style

Yazhen Sun; Chenze Fang; Jinchang Wang; Xuezhong Yuan; Dong Fan. Method of Fatigue-Life Prediction for an Asphalt Mixture Based on the Plateau Value of Permanent Deformation Ratio. Materials 2018, 11, 722 .

AMA Style

Yazhen Sun, Chenze Fang, Jinchang Wang, Xuezhong Yuan, Dong Fan. Method of Fatigue-Life Prediction for an Asphalt Mixture Based on the Plateau Value of Permanent Deformation Ratio. Materials. 2018; 11 (5):722.

Chicago/Turabian Style

Yazhen Sun; Chenze Fang; Jinchang Wang; Xuezhong Yuan; Dong Fan. 2018. "Method of Fatigue-Life Prediction for an Asphalt Mixture Based on the Plateau Value of Permanent Deformation Ratio." Materials 11, no. 5: 722.

Journal article
Published: 01 June 2007 in Journal of Zhejiang University-SCIENCE A
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ACS Style

Xiao-Juan Gao; Jin-Chang Wang; Xiang-Rong Zhu. Static load test and load transfer mechanism study of squeezed branch and plate pile in collapsible loess foundation. Journal of Zhejiang University-SCIENCE A 2007, 8, 1110 -1117.

AMA Style

Xiao-Juan Gao, Jin-Chang Wang, Xiang-Rong Zhu. Static load test and load transfer mechanism study of squeezed branch and plate pile in collapsible loess foundation. Journal of Zhejiang University-SCIENCE A. 2007; 8 (7):1110-1117.

Chicago/Turabian Style

Xiao-Juan Gao; Jin-Chang Wang; Xiang-Rong Zhu. 2007. "Static load test and load transfer mechanism study of squeezed branch and plate pile in collapsible loess foundation." Journal of Zhejiang University-SCIENCE A 8, no. 7: 1110-1117.