基于无人驾驶车辆的不同车道模式交通流优化
作者:
周昭明;黄中祥;袁剑波;李盼
期刊:
长安大学学报(自然科学版) ,2021年41(01):103-115 ISSN:1671-8879
作者机构:
长沙理工大学道路灾变防治及交通安全教育部工程研究中心;[李盼] 湖南城市学院土木工程学院;[黄中祥; 袁剑波] 长沙理工大学交通运输工程学院;[周昭明] 长沙理工大学道路灾变防治及交通安全教育部工程研究中心<&wdkj&>湖南城市学院土木工程学院<&wdkj&>长沙理工大学交通运输工程学院
关键词:
交通工程;混合交通流优化;连续平均法;无人驾驶车辆;市场渗透率;专用车道
摘要:
为研究不同类型车辆组成的混合交通流的运行模式,假定无人驾驶车辆、先进出行者出行系统(advanced traveler information systems,ATIS)装置车辆和普通驾驶车辆分别遵从系统最优模式、用户均衡模式、随机用户均衡模式选择路径,分别建立普通车道、专用车道模式下的交通分配模型,给出求解模型的连续平均算法(method of successive averages,MSA)。通过算例确定路段通行能力,分析信息质量水平、出行需求量、市场渗透率对出行时间的影响,在确定模型各项参数取值的基础上,根据专用车道设置情况对混合均衡流状态进行研究,验证模型算法的可行性和收敛性。研究结果表明:通行能力随着行驶速度的增加先提高后下降,选择合适的行驶速度将提高路段通行能力,且无人驾驶专用道的通行能力明显高于普通车道;适当提高信息质量水平,可降低路径选择的随机性,有效减少平均出行时间;随着出行需求量的增加,平均出行时间逐渐提高,其中系统最优模式(无人驾驶专用道)的平均出行时间最小;根据市场渗透率的变化情况选择合适的车道配置模式,既能提高道路资源的使用效率,又能减少出行者的出行成本;不同车道配置模式下的混合交通流均随着迭代次数的增加逐渐达到稳定状态;当无人驾驶车辆的市场渗透率较高时,设置无人驾驶专用道将缩短行驶时间,提高运行效率。
语种:
中文
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Mechanism analysis and experimental study of emulsified wax curing agent as an isolation layer for concrete pavement
作者:
Yuan, Jianbo;Yao, Jialiang;Wang, Huicong* ;Lin, Yi
期刊:
JOURNAL OF TESTING AND EVALUATION ,2019年47(3):2010-2025 ISSN:0090-3973
通讯作者:
Wang, Huicong
作者机构:
[Yao, Jialiang; Wang, Huicong; Yuan, Jianbo; Lin, Yi] Changsha Univ Sci & Technol, Sch Traff & Transportat Engn, 960 2nd Sect Wanjiali South Rd, Changsha 410114, Hunan, Peoples R China.
通讯机构:
[Wang, Huicong] C;Changsha Univ Sci & Technol, Sch Traff & Transportat Engn, 960 2nd Sect Wanjiali South Rd, Changsha 410114, Hunan, Peoples R China.
关键词:
Cements;Concrete pavements;Concrete testing;Contact angle;Curing;Emulsification;Friction;Nuclear magnetic resonance;Textures;Cement concrete pavements;Coulomb model;Curing agents;Friction coefficients;Frictional resistance;Functional mechanisms;Mechanism analysis;Transition layers;Concretes
摘要:
The functional mechanism of emulsified wax curing agent (EWCA) as an isolation layer of cement concrete pavement (CCP) was analyzed. Reducing the friction between layers and improving the hydrophobic function of concrete surface can weaken the combination of surface course and base course, as well as the formation of weak transition layer, which is generated during the construction of concrete undersurface course. After the cement concrete surface was sprayed with EWCA, its contact range was measured to be 97.3°C 101.1° in the contact angle test. With the nuclear magnetic resonance equipment, the study on the microstructure of the pavement slab of EWCA’s isolation layer was carried out. The isolation layer of EWCA can reduce the porosity of transition layer and enhance its compatibility. The effect of EWCA on the interlayer performance of concrete pavement was explored by the interlayer bonding and friction coefficient tests with different amounts of EWCA and different texture depths of base course. The Coulomb model of interlayer bonding and frictional resistance was established, which preliminarily indicated the functional mechanism of CCP’s emulsified isolation layer. Copyright © 2018 by ASTM International.
语种:
英文
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Membrane-forming performance of emulsified wax curing agent and mechanical properties of ice layer atop cement concrete pavement
作者:
Jia-liang Yao;Hui-cong Wang;Jian-bo Yuan;Ming-jie Qu
期刊:
Advances in Civil Engineering Materials ,2018年7(3):396-412 ISSN:2379-1357
通讯作者:
Wang, Hui-Cong(770692963@qq.com)
作者机构:
[Jia-liang Yao; Jian-bo Yuan; Ming-jie Qu] School of Traffic and Transportation Engineering, Changsha University of Science and Technology 1 , No. 960 2nd Section of Wanjiali S. Rd., Changsha, Hunan410014, P.R. China , https://orcid.org/0000-0002-4632-2449 (J.-L.Y.), https://orcid.org/0000-0002-8905-7438 (J.-B.Y.), https://orcid.org/0000-0001-8978-6529 (M.-J.Q.);[Hui-cong Wang] School of Traffic and Transportation Engineering, Changsha University of Science and Technology 2 , No. 960 2nd Section of Wanjiali S. Rd., Changsha, Hunan410014, P.R. China (Corresponding author), e-mail: 770692963@qq.com , ORCID link for author moved to before name tags https://orcid.org/0000-0002-1388-0209
通讯机构:
[Wang, H.-C.] S;School of Traffic and Transportation Engineering, No. 960 2nd Section of Wanjiali S. Rd., China
关键词:
Cement concrete surface;Emulsified wax curing agent;Ice layer;Mechanical properties;Membrane-forming performance
摘要:
The membrane-forming performance of emulsified wax curing agent (EWCA) and the mechanical properties of the ice layer atop the cement concrete surface were explored via a series of tests in the research of this article. First, the tests for the membrane-forming performance of EWCA atop the glass plates or the cement concrete test blocks were conducted; the thermal endurance of the formed EWCA membrane, its performance against water erosion, the observation of its appearance, and the microstructure were the primary areas of focus in the research. These tests were performed to determine an optimized formula for EWCA and a practical product of EWCA with high performance. This kind of EWCA product was used in the tests for the mechanical properties of the ice layer atop the cement concrete test blocks. The results of these tests indicated that the EWCA product sprayed on the cement concrete surface reduced the sheer bond stress between the ice layer and the cement surface by 62 %, reduced the pull-out bond stress of the ice layer by 38 %, and reduced the impact resistance of the ice layer by 60 %. Thus, it can be concluded that spraying EWCA atop the cement concrete surfaces might improve the efficiency of removing the ice layer from the cement concrete surface. Copyright © 2018 by ASTM International.
语种:
英文
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基于马氏距离的数据处理方法及其在高速公路改扩建工程定额中的应用
作者:
袁剑波;毛红日
期刊:
铁道科学与工程学报 ,2018年15(10):2715-2720 ISSN:1672-7029
作者机构:
长沙理工大学交通运输工程学院, 湖南, 长沙, 410004;长沙理工大学城南学院, 湖南, 长沙, 410076;[袁剑波] 长沙理工大学交通运输工程学院, 湖南, 长沙, 410004 长沙理工大学城南学院, 湖南, 长沙, 410076;[毛红日] 长沙理工大学交通运输工程学院, 湖南, 长沙, 410004
关键词:
改扩建工程;马氏距离;卡方分布;F分布;异常数据
摘要:
针对高速公路改扩建定额编制中的数据处理,应用马氏距离法、χ2分布及F分布,建立多元和单元的异常数据检测模型。将该模型应用于高速公路改扩建工程定额编制,减少干扰因素导致的实测数据的异常性,提高定额编制的精度,保证数据处理的科学性。
语种:
中文
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Characterizing vibration responses of cement pavement slabs atop different interlayers to moving vehicle load
作者:
Yao, J. L.* ;Guan, R.;Yuan, J. B.;Liu, B.
期刊:
JOURNAL OF TESTING AND EVALUATION ,2017年45(1):120-130 ISSN:0090-3973
通讯作者:
Yao, J. L.
作者机构:
[Liu, B.; Yao, J. L.; Guan, R.] Changsha Univ Sci & Technol, Sch Traff & Transportat Engn, Changsha 410004, Hunan, Peoples R China.;[Yao, J. L.] Minist Transport Changsha, Key Lab Rd Struct & Mat, Changsha 410004, Hunan, Peoples R China.;[Yuan, J. B.] Changsha Univ Sci & Technol, Chengnan Coll, Changsha 410015, Hunan, Peoples R China.
通讯机构:
[Yao, J. L.] C;[Yao, J. L.] M;Changsha Univ Sci & Technol, Sch Traff & Transportat Engn, Changsha 410004, Hunan, Peoples R China.;Minist Transport Changsha, Key Lab Rd Struct & Mat, Changsha 410004, Hunan, Peoples R China.
关键词:
Cements;Concrete pavements;Geotextiles;Monitoring;Pavements;Rubber;Seismology;Vectors;Vehicles;Vibrations (mechanical);Cement concrete pavements;Interlayer;Layered geotextiles;Maximum displacement;Micro-seismic;Moving vehicle load;Simulated vibrations;Vibration response;Composite films
摘要:
This research characterized the vibration responses of cement pavement surface slabs atop different interlayers under a moving vehicle load via the laboratory simulated vibration response tests and the field tests. This was done with the help of a micro-seismic monitoring system. In the laboratory simulated vibration response tests, a 4.5 kg hammer was used to impose impact loading, while geotextile and rubber sheet were used as the interlayers. The laboratory test results indicated that under the same impact load, compared with the surface slabs without an interlayer beneath, the vector sum of the peak vibration velocity of the surface slabs atop the rubber sheet interlayer, the single-layered geotextile interlayer, and the double-layered geotextile interlayer decreased by 68, 56, and 67 %, respectively; the vector sum of their maximum displacement amplitude decreased by 96, 52, and 45 %, respectively. In the field tests for vibration response, which were done under an estimated vehicle loading 60 t (rear axle loading 30 t) and an estimated vehicle speed of 60 km/h, the surface slabs with geotextile or plastic membrane as the interlayer beneath were tested. The field test results indicated that under the same other conditions, compared with the surface slabs without an interlayer beneath, the vector sum of the peak vibration velocity of the surface slabs atop the interlayer of a double-layered geotextile plus a single-layered plastic membrane, the interlayer of a singlelayered geotextile plus a single-layered plastic membrane, and the interlayer of a single-layered plastic membrane decreased by 53, 46, and 10 %, respectively. The vector sum of their maximum displacement amplitude decreased by 41, 39, and 19 %, respectively. To conclude, the rubber sheet interlayers and the geotextile interlayers can help the cement pavement surface slabs significantly damp the vibrations caused by the moving vehicle load or the impact load. Copyright © 2016 by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959.
语种:
英文
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非线性关系下绿色施工管理多目标权衡研究
作者:
袁剑波;毛红日;戴坤阳
期刊:
科技进步与对策 ,2017年34(9):33-37 ISSN:1001-7348
作者机构:
[袁剑波; 毛红日; 戴坤阳] 长沙理工大学.交通运输工程学院
会议名称:
2017中国工程管理论坛
会议时间:
2017-09-01
会议地点:
葫芦岛
会议论文集名称:
2017中国工程管理论坛论文集
关键词:
绿色施工管理;多属性效用函数;多目标权衡;非线性关系;遗传算法
摘要:
绿色施工管理除去工期、费用、质量三大目标外,还考虑环境影响、社会影响,形成了更全面、复杂的目标管理体系.分析了绿色施工管理各单项工作综合费用、质量、环保水平、安全指数与持续时间之间的非线性关系,利用多属性效用函数理论及最优化理论,构建了非线性关系下的绿色施工管理多目标权衡模型.采用遗传算法求解,求得的最满意解为绿色施工管理的各目标控制要求.最后应用实例验证了模型的合理性,并讨论了实现绿色施工管理的一个困境.
语种:
中文
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潼湖隧道多孔水泥混凝土基层配合比设计和施工关键技术
作者:
王湘文;冯新军;袁剑波;江宏
期刊:
公路 ,2017年62(9):235-239 ISSN:0451-0712
作者机构:
广东省博大高速公路有限公司博深分公司 惠州市516120;长沙理工大学交通运输工程学院;[冯新军; 江宏; 袁剑波] 长沙理工大学;[王湘文] 广东博大高速公路有限公司博深分公司
关键词:
多孔水泥混凝土基层;配合比设计;抗压强度;有效空隙率;施工关键技术
摘要:
针对广东省博深高速公路潼湖隧道地下水及山泉水丰富的特点,将多孔水泥混凝土用作水泥路面的基层。在参考国内外研究成果的基础上,根据潼湖隧道水泥路面结构力学计算结果,提出了潼湖隧道多孔水泥混凝土基层的设计指标和标准。根据泰波理论、魏茅斯粒子干涉理论及国内外相关研究成果,给出了多孔水泥混凝土的粗集料级配范围,并通过正交试验优化了多孔水泥混凝土的粗集料级配。选取水泥用量、砂率和水灰比3个影响因素,每个因素设定取4个水平,进行了多孔水泥混凝土正交试验设计,采用极差分析法分析试验结果,得到了多孔水泥混凝土7d抗压强度和有效空隙率的回归方程,在此基础上确定了潼湖隧道多孔水泥混凝土基层的最佳配合比。依托潼湖隧道路面工程,总结了多孔水泥混凝土基层施工的关键技术。
语种:
中文
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Mixture Ratio Design of a Porous Concrete Base in a Tunnel Pavement Based on the Orthogonal Test
作者:
Feng, Xinjun* ;Liang, Fuqiang;Jiang, Hong;Yuan, Jianbo
作者机构:
[Liang, Fuqiang; Feng, Xinjun; Jiang, Hong; Yuan, Jianbo] Changsha Univ Sci & Technol, Sch Traff & Transportat Engn, 960,2nd Sect,Wanjiali South Rd, Changsha 410004, Hunan, Peoples R China.
会议名称:
4th Geo-China International Conference: Material, Design, Construction, Maintenance, and Testing of Pavement, Geo-China 2016
会议时间:
25 July 2016 through 27 July 2016
会议地点:
Shandong, PEOPLES R CHINA
会议主办单位:
[Feng, Xinjun;Liang, Fuqiang;Jiang, Hong;Yuan, Jianbo] Changsha Univ Sci & Technol, Sch Traff & Transportat Engn, 960,2nd Sect,Wanjiali South Rd, Changsha 410004, Hunan, Peoples R China.
会议论文集名称:
Geo-China 2016<&wdkj&>Geo-China 2016<&wdkj&>Geo-China 2016
摘要:
Porous concrete due to its high porosity and permeability is considered as an alternative to tunnel pavements base. Based on orthogonal test method, an optimized coarse aggregates gradation with good packing state and uniformity is put forward. Three factors of cement content, sand ratio and water-cement ratio are considered in an orthogonal test with four levels adopted in every factor. The results show the most effective factor affecting 7-day compression strength is cement content, then sand ratio and water-cement ratio. The most effective factor affecting effective porosity is cement content, then water-cement ratio, the least effective factor is sand ratio. A series of regression relationships of 7-day compression strength and effective porosity of porous concrete base are derived on the basis of range analysis of the test results. According to the orthogonal test, the optimum proportion of porous concrete base in tunnel pavement is determined. © 2016 ASCE.
语种:
英文
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Experimental study and isolation mechanism analysis on emulsion wax curing agentused on cement-stabilized granular base
作者:
Jianbo Yuan;Taoyu Zhang* ;Jialiang Yao
期刊:
Innovative Infrastructure Solutions ,2016年1(1):1-9 ISSN:2364-4176
通讯作者:
Taoyu Zhang
作者机构:
[Yuan J.] Chengnan College, Changsha University of Science and Technology, Hunan, Changsha, 410076, China;[Zhang T.] School of Traffic and Transportation Engineering, Changsha University of Science and Technology, Hunan, Changsha, 410114, China;Key Laboratory of Road Structure and Material of Ministry of Transport, Changsha, 410114, China;[Yao J.] School of Traffic and Transportation Engineering, Changsha University of Science and Technology, Hunan, Changsha, 410114, China, Key Laboratory of Road Structure and Material of Ministry of Transport, Changsha, 410114, China
通讯机构:
[Taoyu Zhang] S;School of Traffic and Transportation Engineering, Changsha University of Science and Technology, Hunan, Changsha, China
关键词:
Cement concrete base;Friction permeability coefficient;Isolation layer;Waxed curing agent
摘要:
Based on the analysis in the mechanism of emulsion wax curing agent (EWCA) which was regarded as bond-breaking layer of concrete pavement, tests for shear stress, penetration test, pendulum friction coefficient test and sliding friction coefficient test are operated. Indexes for tests are measured after the spraying of EWCA on cement-stabilized granular base (CSGB). Compared with base do not have bond-breaking layer, test results indicated that bond stress, friction coefficients and permeability coefficients had been separately reduced by 64, 62 and 9 % with the help of EWCA. As a result it will improve the impermeability of CSGB. Pendulum friction coefficient test and sliding friction coefficient test are conducted, on cement-stabilized base’s surface with different texture depth 3 days after the spraying of EWCA. According to variation of sliding friction coefficient and British Pendulum Number (BPN), it can be concluded that they will decrease as increasing of spraying dosage and tend to stable finally. Field interlayer tangential bond force test with EWCA being sprayed on lean concrete base (texture depth <0.3) is performed. The results indicates: spraying time has significant effect on jacking force; wearing after form the film and rainfall have less effect on jacking force. The experimental results indicate that longer the time interval (from spraying the EWCA to pouring the pavement), the worse the effect of isolation. As a conclusion of engineering, the construction of isolation layer should be finished a few days before the construction of pavement.
语种:
英文
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Experimental Study and Mechanism Analysis on an Emulsion Wax Curing Agent Used in a Cement-Stabilized Granular Base
作者:
Zhang, Taoyu* ;Yao, Jialiang;Yuan, Jianbo;Yao, Ding
期刊:
Geotechnical Special Publication ,2016年2016-January(266 GSP):109-117 ISSN:0895-0563
通讯作者:
Zhang, Taoyu
作者机构:
[Yao, Ding; Zhang, Taoyu; Yao, Jialiang] Changsha Univ Sci & Technol, Sch Traff & Transportat Engn, Changsha 410114, Hunan, Peoples R China.;[Yao, Jialiang] Minist Transport Changsha, Key Lab Rd Struct & Mat, Changsha 410114, Hunan, Peoples R China.;[Yuan, Jianbo] Changsha Univ Sci & Technol, Chengnan Coll, Changsha 410076, Hunan, Peoples R China.
通讯机构:
[Zhang, Taoyu] C;Changsha Univ Sci & Technol, Sch Traff & Transportat Engn, Changsha 410114, Hunan, Peoples R China.
会议名称:
4th Geo-China International Conference: Material, Design, Construction, Maintenance, and Testing of Pavement, Geo-China 2016
会议时间:
25 July 2016 through 27 July 2016
会议地点:
Shangdong, PEOPLES R CHINA
会议主办单位:
[Zhang, Taoyu;Yao, Jialiang;Yao, Ding] Changsha Univ Sci & Technol, Sch Traff & Transportat Engn, Changsha 410114, Hunan, Peoples R China.^[Yao, Jialiang] Minist Transport Changsha, Key Lab Rd Struct & Mat, Changsha 410114, Hunan, Peoples R China.^[Yuan, Jianbo] Changsha Univ Sci & Technol, Chengnan Coll, Changsha 410076, Hunan, Peoples R China.
会议论文集名称:
Geo-China 2016<&wdkj&>Geo-China 2016<&wdkj&>Geo-China 2016
摘要:
Based on the analysis in the mechanism of EWCA as bond-breaking layer, tests for shear stress and penetration test are operated and isolation indicates are measured by the spraying of EWCA on cement-stabilized base. Test results indicated that bond stress, friction coefficients and seepage coefficients had been separately reduced by 64%, 62% and 9% with the help of EWCA. It will improve the impermeability of cement-stabilized base. © 2016 ASCE.
语种:
英文
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基于6σ理论的沥青路面表面离析评价指标与方法研究
作者:
费海燕;鞠智敏;袁剑波
期刊:
房地产导刊 ,2015年(20):333-333,340 ISSN:1009-4563
作者机构:
湖南中南水电水利工程建设有限公司 湖南长沙 410014;中国电建集团中南勘测设计研究院有限公司 湖南长沙 410014;长沙理工大学交通运输工程学院 湖南长沙 410014;[鞠智敏] 中国电建集团中南勘测设计研究院有限公司;[费海燕] 湖南中南水电水利工程建设有限公司
关键词:
沥青路面;6σ理论;表面离析
摘要:
本文基于6σ理论,从质量检验标准的改进入手,提出了基于表面离析的沥青路面施工质量检验6σ标准和基于正态分布的表面构造深度指标的6σ标准的评价方法和步骤,从而建立了基于6σ理论的沥青路面表面离析评价指标与方法。
语种:
中文
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高速公路改扩建造价影响因素分析及控制对策
作者:
袁剑波;刘越;余卫民
期刊:
公路 ,2015年60(12):193-197 ISSN:0451-0712
作者机构:
[袁剑波] 长沙理工大学城南学院;长沙理工大学交通运输工程学院;[余卫民] 广东省高速公路有限公司;[刘越] 长沙理工大学
关键词:
高速公路改扩建项目;造价控制;层次分析法(AHP);集成DEMATEL-ISM
摘要:
围绕高速公路改扩建造价管理中存在的问题,从设计、施工技术、组织和管理等层面建立了高速公路改扩建造价控制影响因素体系.以集成DEMATEL-ISM的方法构建高速公路改扩建造价控制影响因素关系模型,根据多级递阶结构模型的分析结果,对影响因素进行分层;根据各个因素指标在造价管理数据的比重得出因素的综合排序.最后,分析结果,对深层影响因素和权重较大的影响因素提出降低造价的控制对策.
语种:
中文
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关键链技术缓冲区的确定方法研究
作者:
袁剑波;刘越;朱文喜
期刊:
项目管理技术 ,2015年13(3):118-121 ISSN:1672-4313
作者机构:
长沙理工大学交通运输工程学院,湖南长沙,410004;[朱文喜; 袁剑波; 刘越] 长沙理工大学
关键词:
汇入缓冲区;模糊工期;弹性系数
摘要:
缓冲区是关键链项目管理的核心和精髓所在。目前,国内学者对关键链技术的研究比较多,但对缓冲区的确定方法一直没有明确的界定。基于关键路径法研究受资源约束下关键链技术缓冲区的设置问题。首先,利用模糊工期和弹性系数的方法研究缓冲区的时间大小设置;其次,通过评估非关键链来确定汇入缓冲区的位置;最后,通过案例计算对提出的方法和确定的步骤进行说明。
语种:
中文
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基于灰色模糊估算模型确定额外工程费用
作者:
高幸;姚静;袁剑波;朱文喜
期刊:
公路与汽运 ,2014年(4):217-221 ISSN:1671-2668
作者机构:
长沙理工大学交通运输工程学院,湖南长沙,410004;长沙理工大学交通运输工程学院,湖南长沙410004;长沙理工大学城南学院,湖南长沙410076;[朱文喜; 袁剑波; 姚静; 高幸] 长沙理工大学
关键词:
工程管理;额外工程;费用索赔;灰色关联度;模糊贴近度;综合相似度
摘要:
承包商对工程变更中的额外工程提出费用索赔有利于及时获得经济赔偿.文中在分析额外工程几种定价方法的基础上,提出确定额外工程费用的一种灰色模糊估算模型,该模型考虑待估费用的额外工程与已建类似工程之间的综合相似度,有助于承包商合理确定额外工程的费用及业主进行造价控制.
语种:
中文
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Research of the Evaluation Indicators and Methods of Asphalt Pavement Surface Segregation Based on Six Sigma
作者:
Jianbo Yuan;Haiyan Fei;Zhimin Ju
作者机构:
[Jianbo Yuan] School of Traffic and Transportation Engineering, Changsha University of Science and Technology, Changsha, Hunan 410076, China.E-mail:;[Zhimin Ju] Zhongnan Engineering Corp., Changsha Hunan 410007, USA.E-mail:;[Haiyan Fei] Hunan Zhongnan Hydropower and Water Conservation Construction Engineering Co. Ltd. Changsha, Hunan 410007, China.E-mail:
会议名称:
Geo-Hubei 2014 International Conference on Sustainable Civil Infrastructure
摘要:
Adopting six sigma theories as the theoretical basis, this paper starts with the improvement of the quality inspection standards and then puts forward the six sigma standard of asphalt pavement construction quality inspection based on the surface segregation and the evaluation methods and steps of six sigma standards of the depth of the surface structure based on normal distribution. Finally, the evaluation index and method of asphalt pavement surface segregation based on six sigma are established. © ASCE 2014.
语种:
英文
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Study on the cone calorimeter of flame-retardant asphalt
作者:
Liu Daliang* ;Hu Bin;Yao Jialiang;Huang Yunyong;Yuan Jianbo
作者机构:
[Yuan Jianbo; Liu Daliang; Hu Bin; Huang Yunyong; Yao Jialiang] Changsha Univ Sci & Technol, Sch Traff & Transportat Engn, Changsha 410114, Hunan, Peoples R China.
会议名称:
2014 Sixth International Conference on Measuring Technology and Mechatronics Automation
会议时间:
January 2014
会议地点:
Zhangjiajie, China
会议主办单位:
[Liu Daliang;Hu Bin;Yao Jialiang;Huang Yunyong;Yuan Jianbo] Changsha Univ Sci & Technol, Sch Traff & Transportat Engn, Changsha 410114, Hunan, Peoples R China.
会议论文集名称:
2014 Sixth International Conference on Measuring Technology and Mechatronics Automation
关键词:
Road engineering;Flame retardant asphalt;cone calorimeter;flame retardancy
摘要:
Flame retardant agent and SBS modified asphalt preparation of flame retardant modified asphalt, Flame retardant properties of asphalt was studied with the cone calorimeter. The results show that, Adding 12% composite flame retardant agent in SBS modified asphalt, the heat release rate and the peak heat release rate were significantly lower than non flame retardant asphalt, the peak heat release rate decreased by 65.1%, the total heat release of flame retardant asphalt was significantly less than that of the non-flame retardant asphalt, flame retardant asphalt quality loss rate than the non-flame retardant asphalt decreased by 60.3%, the total amount of flame retardant asphalt smoke release is less than the non-flame retardant asphalt.
语种:
英文
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Study on flame-retardant properties of flame retardant asphalt mixture
作者:
Liu, Daliang* ;Yan, Yizhong;Huang, Yunyong;Yao, Jialiang;Yuan, Jianbo
期刊:
Applied Mechanics and Materials ,2013年438-439:387-390 ISSN:1660-9336
通讯作者:
Liu, Daliang
作者机构:
[Liu, Daliang; Yan, Yizhong; Huang, Yunyong; Yao, Jialiang; Yuan, Jianbo] Changsha Univ Sci & Technol, Sch Traff & Transportat Engn, Changsha 410114, Hunan, Peoples R China.
通讯机构:
[Liu, Daliang] C;Changsha Univ Sci & Technol, Sch Traff & Transportat Engn, Changsha 410114, Hunan, Peoples R China.
会议名称:
2nd International Conference on Civil Engineering, Architecture and Sustainable Infrastructure, ICCEASI 2013
会议时间:
13 July 2013 through 15 July 2013
会议地点:
Zhengzhou, PEOPLES R CHINA
会议主办单位:
[Liu, Daliang;Yan, Yizhong;Huang, Yunyong;Yao, Jialiang;Yuan, Jianbo] Changsha Univ Sci & Technol, Sch Traff & Transportat Engn, Changsha 410114, Hunan, Peoples R China.
会议论文集名称:
Applied Mechanics and Materials
关键词:
Cone calorimeter;Flame retardancy;Flame retardant mixture;Road engineering
摘要:
Flame retardants modified asphalt with SBS flame retardant SMA hybrid material was prepared, flame retardant performances of SMA mixture was studied by the cone calorimeter. The results show that adding 12% flame retardant with SBS modified asphalt in preparation of flame retardant SMA mixture, the peak heat release rate values than the non-flame retardant asphalt mixture decreased by 4.02 kW/m<sup>2</sup>, and the heat release rate values were significantly reduced, the total heat and the amount of smoke of flame retardant asphalt mixture released less than the non-flame retardant asphalt mixture. ©(2013) Trans Tech Publications, Switzerland.
语种:
英文
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高等级公路绿色施工评价模型研究
作者:
袁剑波;熊艳
作者机构:
长沙理工大学交通运输工程学院,湖南长沙410114;长沙理工大学城南学院,湖南长沙410076
会议名称:
2013中国工程管理论坛
会议时间:
2013-08-01
会议地点:
哈尔滨
会议论文集名称:
2013中国工程管理论坛论文集
关键词:
公路建设;绿色施工;评价模型;工程应用
摘要:
阐述了高等级公路绿色施工的内涵,从节约利用资源能源、减少环境影响、加强综合管理等方面构建了高等级公路绿色施工评价指标体系,并对各指标评价标准进行了较全面、系统的量化.针对指标的模糊不相容性,建立了高等级公路绿色施工模糊物元评价模型,采用层次分析法和熵权法确定了指标权重.最后,结合工程实例分析了该评价模型的应用效果.
语种:
中文
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基于模糊综合评价法的PFI项目选择方法研究
作者:
袁剑波;费海燕
期刊:
项目管理技术 ,2013年(2):50-54 ISSN:1672-4313
作者机构:
长沙理工大学交通运输工程学院,湖南 长沙,410001;[费海燕; 袁剑波] 长沙理工大学
关键词:
PFI项目选择;模糊综合评价法;评价指标
摘要:
阐述了PFI项目的内涵和特征,结合模糊综合评价法,建立了PFI项目选择的模糊评价流程,在分析PFI项目评价指标体系的基础上,提出了PFI项目选择的模糊评价方法。最后通过在某高速公路PFI项目选择的应用,验证了该方法的合理有效性。
语种:
中文
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大型直道试验系统在混凝土桥面沥青混凝土铺装层抗车辙评价中的应用研究
作者:
邓小华;冯新军;袁剑波
期刊:
公路 ,2013年(7):53-57 ISSN:0451-0712
作者机构:
[邓小华] 广东省交通集团有限公司;长沙理工大学交通运输工程学院;[冯新军; 袁剑波] 长沙理工大学
关键词:
水泥混凝土桥面;沥青混凝土铺装层;直道试验;抗车辙能力
摘要:
针对广深高速公路东莞北大桥桥面沥青混凝土铺装层设计,采用大型直道试验系统,对水泥混凝土桥面的4种沥青混合料铺装结构进行高温车辙试验,并对测试结果进行了分析。结果表明:适当调整SMA沥青混合料中粗集料的粗细比并且对水泥混凝土桥面板进行铣刨处理可以提高沥青混凝土铺装层的高温抗车辙能力。对优化桥面沥青混凝土铺装层设计和工程施工产生了较好的指导作用。
语种:
中文
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