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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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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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采用美国密歇根科技公司(MSC)货车车轮六分力传感器，采集不同道路线形、车型、载重和路面类型货车轮胎荷载实车试验数据，结合车辆动力学理论进行了典型货车运动惯性荷载特性分析。分析结果显示：惯性运动荷载的量级主要取决车辆质量、质量分布、加速度大小和方向以及轮胎的组数和接地压强，道路线形起伏和平面转换会引起车辆加减速和复杂惯性运动模式。运动惯性荷载分为两类：第一类表现为较大的均匀荷载，另一类为冲击性荷载；在3个方向荷载中，垂向方向上数值最大，纵向和横向水平方向上数值较小，垂向冲击系数可达4以上，远高于目前一般采用的冲击系数值。引起较大运动惯性荷载的敏感位置，一般分布在车速变化和行驶方向变化显著的转弯路段和坡底路段。长时间持续冲击一般由弯道侧倾运动引起；短时冲击是由于在竖曲线上的车辆制动或加减速引起的俯仰运动以及摇摆运动造成。考虑货车的运动惯性荷载作用效应对于货车重载交通路面结构与材料合理设计、桥梁结构弯道设计和车辆管理均十分必要。
Keyword ：
荷载特性 荷载特性 车轮六分力传感器 车轮六分力传感器 运动惯性荷载 运动惯性荷载 道路工程 道路工程 重型货车 重型货车
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| GB/T 7714 | 胡昌斌 , 林淼 , 童生豪 . 货车运动惯性荷载特性实车试验研究 [J]. | 工程力学 , 2023 , (08) : 243-256 . |
| MLA | 胡昌斌 等. "货车运动惯性荷载特性实车试验研究" . | 工程力学 08 (2023) : 243-256 . |
| APA | 胡昌斌 , 林淼 , 童生豪 . 货车运动惯性荷载特性实车试验研究 . | 工程力学 , 2023 , (08) , 243-256 . |
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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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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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The wheel force transducer of Michigan technology company (MSC) was used to collect the field truck data of tire load with different highway alignment, vehicle type, load, and pavement types. Combined with the vehicle dynamics, the characteristics of typical truck motion inertia load were analyzed. The results show that the magnitude of inertial motion load mainly depends on the vehicle mass, distribution, acceleration size, direction, and the number of tire groups and pressure. Highway alignment fluctuation and horizontal conversion would cause vehicle acceleration, deceleration, and complex inertial motion mode. The motion inertia load is divided into two types, with the first type being the large uniform load and another being the impact load. In the three directions, the value in the vertical direction is the largest, while the values in the longitudinal and transverse horizontal directions are small. The vertical impact coefficient can exceed 4, which is much higher than the impact coefficient commonly adopted nowadays. Sensitive locations with larger motion inertia loads are generally distributed in the turning sections and the slope bottom sections with significant changes in speed and driving direction. Long lasting impact is generally caused by rolling motion; Short time impact is caused by pitching motion and rocking motion, which is indirectly caused by vehicle braking or acceleration and deceleration on the vertical curve. It is necessary to consider the effect of truck motion inertia load in the design of heavy pavement structures and materials, curve design of bridge structures, and vehicle management. © 2023 Tsinghua University. All rights reserved.
Keyword ：
heavy truck heavy truck load characteristic load characteristic moving inertia load moving inertia load road engineering road engineering wheel force transducer wheel force transducer
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| GB/T 7714 | Hu, C.-B. , Lin, M. , Tong, S.-H. . EXPERIMENTAL STUDY ON CHARACTERISTICS OF MOVING INERTIA LOAD OF TRUCK; [货车运动惯性荷载特性实车试验研究] [J]. | Engineering Mechanics , 2023 , 40 (8) : 243-256 . |
| MLA | Hu, C.-B. et al. "EXPERIMENTAL STUDY ON CHARACTERISTICS OF MOVING INERTIA LOAD OF TRUCK; [货车运动惯性荷载特性实车试验研究]" . | Engineering Mechanics 40 . 8 (2023) : 243-256 . |
| APA | Hu, C.-B. , Lin, M. , Tong, S.-H. . EXPERIMENTAL STUDY ON CHARACTERISTICS OF MOVING INERTIA LOAD OF TRUCK; [货车运动惯性荷载特性实车试验研究] . | Engineering Mechanics , 2023 , 40 (8) , 243-256 . |
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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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文中研究了耐磨低收缩抗裂道面水泥混凝土及其现场工程应用，解决以往因水泥原因引发的路面早期开裂病害、寿命过短、耐磨性差等诸多问题。结果表明，这有利于提升水泥混凝土路面的各项性能，延长道路服役寿命，取得了显著的经济效益。
Keyword ：
低收缩 低收缩 工程应用 工程应用 抗裂 抗裂 耐磨 耐磨 道路水泥 道路水泥
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| GB/T 7714 | 廖福展 , 陈德荣 , 陈汝仙 et al. 耐磨低收缩抗裂道面水泥混凝土路面试验研究 [J]. | 江西建材 , 2023 , 3 (12) : 56-58 . |
| MLA | 廖福展 et al. "耐磨低收缩抗裂道面水泥混凝土路面试验研究" . | 江西建材 3 . 12 (2023) : 56-58 . |
| APA | 廖福展 , 陈德荣 , 陈汝仙 , 陈必杨 , 胡昌斌 . 耐磨低收缩抗裂道面水泥混凝土路面试验研究 . | 江西建材 , 2023 , 3 (12) , 56-58 . |
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Based on a creep model for microprestress-solidification theory, considering the influence of material, structure and environmental parameters, a three-dimensional simulation program for early-age mechanical behavior of pavement was established, and the creep effects mechanism of three-dimensional pavement structure were analyzed. The results show that creep is a relaxation effect on early-age pavement, which significantly reduces the early-age curling and stress. The influence magnitude of creep on early-age behavior of pavement is similar to that of temperature gradient and that of edge constraint. Creep effect is also significantly affected by edge constraint, temperature gradient, humidity gradient and overall temperature conditions, and has spatial position non-uniform distribution characteristics. Under the effect of creep, the maximum relaxation position of stress is close to the middle of the restricted edge. The creep relaxation effect has significant time-dependent characteristics. It is most significant in the first 7 days and tends to be stable after 60 days. Creep relaxation effect increases significantly with temperature gradient and overall temperature increasing. Theoretical comparison shows that, ignoring the influence of temperature will underestimate the creep effect under high temperature and overestimate the creep effect under low temperature. It is recommended to use creep effect design to reduce early-age curling and stress in pavement engineering. Copyright ©2022 Engineering Mechanics. All rights reserved.
Keyword ：
Concrete pavements Concrete pavements Creep Creep Highway engineering Highway engineering Solidification Solidification Thermal gradients Thermal gradients
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| GB/T 7714 | Hu, Chang-Bin , Sun, Zeng-Hua , Wang, Li-Juan . Early-age creep effects of cement concrete pavement [J]. | Engineering Mechanics , 2022 , 39 (4) : 123-137 . |
| MLA | Hu, Chang-Bin et al. "Early-age creep effects of cement concrete pavement" . | Engineering Mechanics 39 . 4 (2022) : 123-137 . |
| APA | Hu, Chang-Bin , Sun, Zeng-Hua , Wang, Li-Juan . Early-age creep effects of cement concrete pavement . | Engineering Mechanics , 2022 , 39 (4) , 123-137 . |
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对光伏路面聚氨酯、环氧树脂、聚甲基丙烯酸甲酯、聚碳酸脂4类透光面层材料的性能情况进行了分析与评价，对比显示聚甲基丙烯酸甲酯具有一定韧性和较好的耐候性，聚碳酸酯具有较好的力学性能。实际工程应用显示，光伏路面透光材料的抗冲击性能、耐磨性能、耐候性能以及高温稳定性能是其路用性能的关键，光伏路面透光层材料需从材料强度、材料透光率、耐候性3个方面进行性能保证和提升。
Keyword ：
光伏路面系统设计 光伏路面系统设计 耐候性 耐候性 路用性能 路用性能 透光面层 透光面层 高分子材料 高分子材料
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| GB/T 7714 | 胡昌斌 , 张培旭 , 何肖斌 et al. 光伏路面高分子透光层材料性能分析与评价 [J]. | 福建交通科技 , 2022 , 6 (04) : 1-5,27 . |
| MLA | 胡昌斌 et al. "光伏路面高分子透光层材料性能分析与评价" . | 福建交通科技 6 . 04 (2022) : 1-5,27 . |
| APA | 胡昌斌 , 张培旭 , 何肖斌 , 胡序久 . 光伏路面高分子透光层材料性能分析与评价 . | 福建交通科技 , 2022 , 6 (04) , 1-5,27 . |
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