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学者姓名：胡昌斌
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Abstract ：
弯道路段货车运动惯性荷载具有显著的振荡冲击特性,基于车辆多体系统TruckSim动力学仿真方法结合货车荷载现场试验,定义了 5类标准弯道类型和荷载特性表征参数,重点对弯道类型、半径、车速和驾驶行为等因素组合对运动惯性荷载的影响开展了研究.研究显示弯道路段货车运动惯性荷载具有分岔、多种运动模式和振荡效应等复杂特性以及偏载、荷载多向组合和冲击基本特性.分岔特性是弯道路段最重要的荷载特性,与车辆速度、弯道半径和超高存在复杂的耦合关系,且具有临界速度效应.弯道路段车辆存在侧向运动、侧倾运动和横摆运动等多种运动模式,并通过悬架弹簧诱发产生复合运动惯性冲击荷载,对于S型、同向型、反向型和广义型弯道存在纵向加减速、制动运动以及多次摇摆运动,且在出弯后荷载具有振荡效应.分岔行为、偏载和过大惯性冲击是诱发弯道路段过早复杂破坏模式和磨损的主要成因,并给出了荷载分岔计算方法、偏载、竖向和水平侧向冲击系数值域,以期为路面设计和管理提供支持.
Keyword ：
弯道路段 弯道路段 形成机制 形成机制 荷载特性 荷载特性 运动惯性荷载 运动惯性荷载 道路工程 道路工程
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| GB/T 7714 | 胡昌斌 , 林淼 , 童生豪 . 弯道路段货车复杂运动惯性荷载特性与机制研究 [J]. | 工程力学 , 2024 , 41 (8) : 185-200 . |
| MLA | 胡昌斌 等. "弯道路段货车复杂运动惯性荷载特性与机制研究" . | 工程力学 41 . 8 (2024) : 185-200 . |
| APA | 胡昌斌 , 林淼 , 童生豪 . 弯道路段货车复杂运动惯性荷载特性与机制研究 . | 工程力学 , 2024 , 41 (8) , 185-200 . |
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The motion inertia load of truck in curved road sections has significant oscillation and impact characteristics. Based on the dynamic simulation method by TruckSim and the field test of truck load, five types of standard curved road sections and load characteristic parameters were defined. The influence of the combination of curve type, radius, vehicle speed, and driving behavior on the motion inertia load is mainly studied. The research shows that the inertial load of truck in curved road sections has complex characteristics such as bifurcation, multiple motion modes, and oscillation effects, and basic characteristics such as eccentric loading, multi-directional combination of loading, and impact. Bifurcation is the most important load characteristic in curved road sections, which has complex coupling relationship with vehicle speed, curve radius and superelevation, and has critical speed effect. There are many kinds of motion modes such as lateral motion, roll motion, and yaw motion in curved road sections, and the inertial impact load is induced by the suspension spring. There are longitudinal acceleration and deceleration, braking motion, and multiple sway motion for the S-type, isotropic type, reverse type, and generalized type, and the load has oscillation effect after the curve is out. Bifurcation behavior, eccentric load, and excessive inertia impact were the main causes of premature and complex failure mode. The calculation method of load bifurcation, the value range of eccentric load, vertical and horizontal lateral impact coefficient were proposed to provide supports for pavement design and management. © 2024 Tsinghua University. All rights reserved.
Keyword ：
Automobile driver simulators Automobile driver simulators Automobiles Automobiles Automobile testing Automobile testing Bifurcation (mathematics) Bifurcation (mathematics) Highway administration Highway administration Magnetic levitation vehicles Magnetic levitation vehicles Suspensions (components) Suspensions (components) Trucks Trucks
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| GB/T 7714 | Hu, Chang-Bin , Lin, Miao , Tong, Sheng-Hao . STUDY ON FORMATION MECHANISM AND CHARACTERISTICS OF INERTIA LOAD OF TRUCK IN CURVED ROAD SECTIONS [J]. | Engineering Mechanics , 2024 , 41 (8) : 185-200 . |
| MLA | Hu, Chang-Bin 等. "STUDY ON FORMATION MECHANISM AND CHARACTERISTICS OF INERTIA LOAD OF TRUCK IN CURVED ROAD SECTIONS" . | Engineering Mechanics 41 . 8 (2024) : 185-200 . |
| APA | Hu, Chang-Bin , Lin, Miao , Tong, Sheng-Hao . STUDY ON FORMATION MECHANISM AND CHARACTERISTICS OF INERTIA LOAD OF TRUCK IN CURVED ROAD SECTIONS . | Engineering Mechanics , 2024 , 41 (8) , 185-200 . |
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Compaction directly affects concrete's strength and durability. In this paper, the relationship between vibration parameters and compactness is modeled by using colored aggregates and image methods to analyze the compactness of concrete characterized by pore structure. Experiments were conducted to investigate the effects of vibrating frequency and duration on the aggregate distribution coefficient, segregation rate, and porosity of slipform concrete. The test results showed that the smaller the aggregate size under high-frequency pounding, the better the concrete compactness. In addition, the aggregate segregation rate and concrete strength increased and then decreased with the pounding length, and the greater the pounding frequency, the more pronounced the trend. Lastly, the concrete's internal porosity increased and then decreased with the pounding length. This study obtained the control range of aggregate segregation rate and porosity through analysis, and established equations for the optimal vibration parameters and paving speed of sliding form concrete to guide the reasonable control of actual sliding form paving and vibration construction processes.
Keyword ：
hole structure hole structure intensity of the concrete intensity of the concrete sliding form concrete sliding form concrete vibrating process vibrating process
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| GB/T 7714 | Chai, Min , Hu, Changbin , Cheng, Mingyue . Study on the Effect of Vibrating Process on the Compactness of Slipform Concrete [J]. | APPLIED SCIENCES-BASEL , 2023 , 13 (14) . |
| MLA | Chai, Min 等. "Study on the Effect of Vibrating Process on the Compactness of Slipform Concrete" . | APPLIED SCIENCES-BASEL 13 . 14 (2023) . |
| APA | Chai, Min , Hu, Changbin , Cheng, Mingyue . Study on the Effect of Vibrating Process on the Compactness of Slipform Concrete . | APPLIED SCIENCES-BASEL , 2023 , 13 (14) . |
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High rainfall environmental conditions can easily cause erosion or collapse of the granite residual soil slope. However, traditional slope reinforcement methods have drawbacks such as poor landscape effect, high energy consumption of raw materials, and environmental pollution. This study studied the application of microbial-induced calcite precipitation (MICP) in the reinforcement of granite residual soil. The consolidation effect of various methods was investigated, and the influence of cementing liquid concentration and pH value on consolidation under optimal curing conditions was explored. The results showed that the bacteria concentration reached OD600 = 3.0 and urease activity was 31.64 mM/min, which positively impact the production of calcium carbonate and the stability of crystal morphology. In addition, the soaking method was found to have the most effective consolidation effect on the surface soil samples, with the lowest disintegration rate. On the other hand, the peristaltic pump grouting method is the most effective in strengthening depth. This method resulted in a 513.65% increase in unconfined compressive strength (UCS), a 297.98% increase in cohesion, and a 101.75% increase in internal friction angle. This study also found that after seven rounds of grouting, the highest UCS was achieved in consolidated soil samples with a 0.5 mol/L cementing solution concentration, reaching 1.602 MPa. The UCS of soil samples increases as the pH value of the cementing fluid increases within the range of 6-8. As the pH value reaches 8-9, the strength increases and stabilizes gradually. These research findings can serve as an experimental basis for strengthening granite residual soil slopes and a guide for improving microbial geotechnical strengthening methods.
Keyword ：
cementing solution concentration cementing solution concentration granite residual soil granite residual soil MICP MICP strengthen strengthen urease activity urease activity
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| GB/T 7714 | Wang, Rong , Li, Huawei , Chen, Zichuang et al. Strength and Mechanism of Granite Residual Soil Strengthened by Microbial-Induced Calcite Precipitation Technology [J]. | APPLIED SCIENCES-BASEL , 2023 , 13 (15) . |
| MLA | Wang, Rong et al. "Strength and Mechanism of Granite Residual Soil Strengthened by Microbial-Induced Calcite Precipitation Technology" . | APPLIED SCIENCES-BASEL 13 . 15 (2023) . |
| APA | Wang, Rong , Li, Huawei , Chen, Zichuang , Liu, Fang , Wei, Muwang , Liu, Feiyu et al. Strength and Mechanism of Granite Residual Soil Strengthened by Microbial-Induced Calcite Precipitation Technology . | APPLIED SCIENCES-BASEL , 2023 , 13 (15) . |
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Airport pavements are prone to early defects during the construction phase, and their early performance during the construction phase is significantly affected by the external temperature field. This article takes the concrete pavement of Xiamen Xiang'an New Airport as an example and uses a three-dimensional (3D) humidity simulation program for cement concrete pavement to study the evolution behavior of the early stage humidity field of the pavement in a humid and hot climate environment. The results indicate that the evolution law of the humidity field of the concrete pavement slab was consistent with the environmental field, presenting a 24 h periodic variation. The environmental field had a significant impact on the humidity of the surface layer of the pavement slab, and the humidity decreased rapidly with time. There was a humidity gradient on both the horizontal plane and the cutting plane of the slab, the horizontal humidity was concentrated from the boundary into the middle of the slab, and the sectional humidity was concentrated from the top to the bottom of the slab. Environmental parameters, construction parameters, and material and structural parameters all influenced humidity through humidity exchange or by changing the saturated vapor pressure inside the slab. The humidity field was most sensitive to environmental humidity and maintenance methods, but less sensitive to material parameters and structural parameters. Through analysis, it is advisable to avoid hot seasons, choose periods of increased environmental humidity, adopt appropriate maintenance methods during construction to reduce humidity stress on the slab, and therefore decrease early stage deterioration and improve service life.
Keyword ：
cement concrete pavement cement concrete pavement early stage early stage humid and hot climate humid and hot climate humidity field humidity field
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| GB/T 7714 | Chai, Min , Hu, Changbin , Wang, Lijuan et al. Study on the Evolution Behavior of Humidity Fields in Cement Concrete Pavements of a Coastal Airport During Early Stages in Humid and Hot Areas [J]. | MATERIALS , 2023 , 16 (16) . |
| MLA | Chai, Min et al. "Study on the Evolution Behavior of Humidity Fields in Cement Concrete Pavements of a Coastal Airport During Early Stages in Humid and Hot Areas" . | MATERIALS 16 . 16 (2023) . |
| APA | Chai, Min , Hu, Changbin , Wang, Lijuan , Chen, Tao . Study on the Evolution Behavior of Humidity Fields in Cement Concrete Pavements of a Coastal Airport During Early Stages in Humid and Hot Areas . | MATERIALS , 2023 , 16 (16) . |
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Cement concrete pavement is prone to early deterioration during the construction phase, and the early performance during the construction phase is significantly affected by the external temperature and humidity field. This article selects meteorological parameters in the Fuzhou area as a typical representative of a humid and hot climate and develops a three-dimensional humidity simulation program based on Fick's law and the finite difference method to study the evolution behavior of the humidity field in early age of cement concrete pavement. It discusses the humidity distribution characteristics of road panels and analyzes the influence and sensitivity of cement type, construction conditions, and road panel structural parameters on road panel humidity. Research has shown that the evolution law of the humidity field of road panels shows a 24-h periodic change with the external environment. The environmental field has a significant impact on the surface humidity of road panels. The horizontal humidity of the panel is concentrated from the boundary to the middle of the panel, and the tangential humidity is concentrated from the top to the bottom of the panel. The humidity field of road panels is the most sensitive to environmental humidity and maintenance methods, but less sensitive to material and structural parameters. Therefore, during construction, it is possible to avoid the hot season and choose a time period when the environmental humidity increases to pour concrete. Appropriate maintenance methods are adopted to reduce the humidity stress of the panels, reduce early age deterioration, and improve their service life.
Keyword ：
cement concrete pavement cement concrete pavement early age early age hot and humid regions hot and humid regions humidity humidity
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| GB/T 7714 | Chai, Min , Wang, Lijuan , Hu, Changbin et al. Investigation into the Impact of Humidity on Early Age Cement Concrete Pavement Behavior in Hot and Humid Regions [J]. | APPLIED SCIENCES-BASEL , 2023 , 13 (18) . |
| MLA | Chai, Min et al. "Investigation into the Impact of Humidity on Early Age Cement Concrete Pavement Behavior in Hot and Humid Regions" . | APPLIED SCIENCES-BASEL 13 . 18 (2023) . |
| APA | Chai, Min , Wang, Lijuan , Hu, Changbin , Chen, Tao . Investigation into the Impact of Humidity on Early Age Cement Concrete Pavement Behavior in Hot and Humid Regions . | APPLIED SCIENCES-BASEL , 2023 , 13 (18) . |
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通过室内混凝土强度试验和材料导热性能试验，针对普通路面混凝土、高导热钢纤维混凝土和低导热陶粒混凝土3种铺装材料，试验对比分析在多组配合比方案下的力学强度及导热性能。试验结果显示，相比普通路面混凝土，路面钢纤维混凝土导热性能提高了28.6%；路面陶粒混凝土导热系数仅为普通路面混凝土的21.3%，可选用钢纤维混凝土和陶粒混凝土分别作为发热线电加热桥面导热面层和阻热铺装材料。
Keyword ：
导热性能 导热性能 桥面铺装 桥面铺装 电加热 电加热 钢纤维混凝土 钢纤维混凝土 陶粒混凝土 陶粒混凝土
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| GB/T 7714 | 胡昌斌 , 翁盛华 , 张丽瑶 et al. 发热线电加热桥面混凝土导热性能分析 [J]. | 福建交通科技 , 2022 , 7 (10) : 6-12 . |
| MLA | 胡昌斌 et al. "发热线电加热桥面混凝土导热性能分析" . | 福建交通科技 7 . 10 (2022) : 6-12 . |
| APA | 胡昌斌 , 翁盛华 , 张丽瑶 , 周月华 . 发热线电加热桥面混凝土导热性能分析 . | 福建交通科技 , 2022 , 7 (10) , 6-12 . |
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The damping property of asphalt is essential in reducing pavement vibration and noise. This study mainly presents the damping property of the styrene-butadiene-styrene (SBS) modified asphalt under a wide temperature range and aging. The materials used 11 total combinations of the base asphalt, three modifiers (SBS, crumb rubber [CR], and polythene), and three additives (hydrotalcite, crosslinker, and plasticizer). The loss factor (LF) was first measured by the dynamic shear rheometer. Then, the four parameters, namely glass transition temperature (Tg), the maximum loss factor (LFmax), effective temperature range of damping (??T0.7), and area under the loss factor curve (TA), were used to evaluate the damping characteristics of asphalt at a wide temperature range. Based on this, the damping property of the base, SBS, and CR of aged asphalt is analyzed. The results show that in the medium- and high-temperature regions, the crosslinker and plasticizer can effectively improve the temperature sensitivity of SBS modified (SM) asphalt and the damping property. Adding plasticizer and crosslinker at the same time improves the damping property of asphalt most significantly. In the middle-low temperature region, both the SM asphalt and CR modified asphalt have a poor damping property, and the crosslinker and plasticizer have no apparent effect on the improvement of SM asphalt. The damping property of SM asphalt decreases more slowly than that of base asphalt after aging, and it still has a good damping property. The outlined research results show that SM asphalt has a good damping capacity of pavement at medium- and high-temperature ranges and after aging, which can assist in developing a sustainable solution to extend the service life of pavement without increasing the thickness of pavement.
Keyword ：
aging aging loss factor loss factor styrene-butadiene-styrene modified asphalt styrene-butadiene-styrene modified asphalt wide temperature range wide temperature range
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| GB/T 7714 | Hu, Changbin , Lin, Miao , Qu, Wentao et al. Evaluation of Loss Factor of Styrene-Butadiene-Styrene Modified Asphalt under Wide Temperature Range and Aging [J]. | JOURNAL OF TESTING AND EVALUATION , 2022 , 50 (4) : 1844-1858 . |
| MLA | Hu, Changbin et al. "Evaluation of Loss Factor of Styrene-Butadiene-Styrene Modified Asphalt under Wide Temperature Range and Aging" . | JOURNAL OF TESTING AND EVALUATION 50 . 4 (2022) : 1844-1858 . |
| APA | Hu, Changbin , Lin, Miao , Qu, Wentao , Easa, Said M. , Jiang, Zhenliang . Evaluation of Loss Factor of Styrene-Butadiene-Styrene Modified Asphalt under Wide Temperature Range and Aging . | JOURNAL OF TESTING AND EVALUATION , 2022 , 50 (4) , 1844-1858 . |
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为了研究病害与道路线形的关系，同时考虑不同路段上重载车辆对路面病害的影响，对福建省G319漳州至龙岩路段、G324漳州段以及G205南平段进行了交通量的调查，尤其对G319漳州段病害较为严重的K142+500～K153+500段进行了现场试验车测试和病害统计，绘制出病害—线形图，进一步揭示病害与线形之间的关系以及山区公路线形位置与路面过早发生破坏之间的关系，调查显示道路线形的变化，诱发了车辆行驶行为的改变；在特殊路段车辆动荷载的变化，加速路面发生破坏的进程。
Keyword ：
位置 位置 山区公路 山区公路 线形 线形 路面病害 路面病害 重载交通 重载交通
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| GB/T 7714 | 颜海 , 胡昌斌 , 林欢欢 . 重载交通下山区公路路面病害与道路线形关系分析 [J]. | 福建交通科技 , 2022 , 7 (11) : 1-6,25 . |
| MLA | 颜海 et al. "重载交通下山区公路路面病害与道路线形关系分析" . | 福建交通科技 7 . 11 (2022) : 1-6,25 . |
| APA | 颜海 , 胡昌斌 , 林欢欢 . 重载交通下山区公路路面病害与道路线形关系分析 . | 福建交通科技 , 2022 , 7 (11) , 1-6,25 . |
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采用钢轮式耐磨试验机设备模拟钢轮与道面的磨粒磨损，对石灰石粉和花岗岩石粉2种典型的石粉含量对路面耐磨性能的影响开展了研究，并通过XRD和SEM试验进行了水泥水化产物的衍射图谱分析和混凝土微观形貌扫描电镜分析。研究结果显示，机制砂花岗岩石粉和石灰石粉对强度和耐磨性能的影响趋势基本一致，石粉含量在10%左右时其微观形貌中的水化产物分布较均匀，并交织紧密，对混凝土的孔隙有较大的改善作用，对混凝土强度和耐磨性能的影响最佳。
Keyword ：
机制砂 机制砂 水泥混凝土 水泥混凝土 石粉 石粉 耐磨性能 耐磨性能
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| GB/T 7714 | 唐朝阳 , 胡昌斌 , 唐敏 . 机制砂石粉对路面水泥混凝土耐磨性能的影响 [J]. | 福建交通科技 , 2022 , 5 (10) : 1-5 . |
| MLA | 唐朝阳 et al. "机制砂石粉对路面水泥混凝土耐磨性能的影响" . | 福建交通科技 5 . 10 (2022) : 1-5 . |
| APA | 唐朝阳 , 胡昌斌 , 唐敏 . 机制砂石粉对路面水泥混凝土耐磨性能的影响 . | 福建交通科技 , 2022 , 5 (10) , 1-5 . |
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