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Optimizing Connections:Applied Shortest Path Algorithms for MANETs
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作者 Ibrahim Alameri Jitka Komarkova +2 位作者 Tawfik Al-Hadhrami Abdulsamad Ebrahim Yahya Atef Gharbi 《Computer Modeling in Engineering & Sciences》 SCIE EI 2024年第10期787-807,共21页
This study is trying to address the critical need for efficient routing in Mobile Ad Hoc Networks(MANETs)from dynamic topologies that pose great challenges because of the mobility of nodes.Themain objective was to del... This study is trying to address the critical need for efficient routing in Mobile Ad Hoc Networks(MANETs)from dynamic topologies that pose great challenges because of the mobility of nodes.Themain objective was to delve into and refine the application of the Dijkstra’s algorithm in this context,a method conventionally esteemed for its efficiency in static networks.Thus,this paper has carried out a comparative theoretical analysis with the Bellman-Ford algorithm,considering adaptation to the dynamic network conditions that are typical for MANETs.This paper has shown through detailed algorithmic analysis that Dijkstra’s algorithm,when adapted for dynamic updates,yields a very workable solution to the problem of real-time routing in MANETs.The results indicate that with these changes,Dijkstra’s algorithm performs much better computationally and 30%better in routing optimization than Bellman-Ford when working with configurations of sparse networks.The theoretical framework adapted,with the adaptation of the Dijkstra’s algorithm for dynamically changing network topologies,is novel in this work and quite different from any traditional application.The adaptation should offer more efficient routing and less computational overhead,most apt in the limited resource environment of MANETs.Thus,from these findings,one may derive a conclusion that the proposed version of Dijkstra’s algorithm is the best and most feasible choice of the routing protocol for MANETs given all pertinent key performance and resource consumption indicators and further that the proposed method offers a marked improvement over traditional methods.This paper,therefore,operationalizes the theoretical model into practical scenarios and also further research with empirical simulations to understand more about its operational effectiveness. 展开更多
关键词 Dijkstra’s algorithm optimization complexity analysis shortest path first comparative algorithm analysis nondeterministic polynomial(NP)-complete
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Pioneering a New Realm of Human Rights Civilization in the Chinese Path to Modernization——An Overview of the Symposium on“The Chinese Path to Modernization and the Promotion of Free and Comprehensive Human Development”
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作者 王新怡 黄安杰 QIAN chuijun(Translated) 《The Journal of Human Rights》 2024年第2期476-481,共6页
On October 14,2023,a symposium themed“The Chinese Path to Modernization and the Promotion of Free and Comprehensive Human Development”was held in Changchun,Jilin Province,China.More than fifty experts,scholars,and r... On October 14,2023,a symposium themed“The Chinese Path to Modernization and the Promotion of Free and Comprehensive Human Development”was held in Changchun,Jilin Province,China.More than fifty experts,scholars,and researchers from national institutions and universities engaged in discussions and exchanges on human rights on the Chinese path to modernization,including the path,practice,knowledge systems,and civilization forms of human rights.This symposium played a significant role in advancing the construction of the disciplinary system,academic system,and discourse system of human rights in China. 展开更多
关键词 Chinese path to modernization Chinese human rights civilization China’s indigenous human rights knowledge system free and comprehensive human development
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Thermodynamic study on reaction path of Hg(Ⅱ) with S(Ⅱ) in solution 被引量:1
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作者 柴立元 王庆伟 +3 位作者 王云燕 李青竹 杨志辉 舒余德 《Journal of Central South University》 SCIE EI CAS 2010年第2期289-294,共6页
The mercury sulfidation experiments were conducted in the pH range from 1 to 13. The results show that Hg(II) reacted with equimolar S( II ) has the lowest remained Hg(II ) concentration (9.7 μg/L) at pH 1.0 ... The mercury sulfidation experiments were conducted in the pH range from 1 to 13. The results show that Hg(II) reacted with equimolar S( II ) has the lowest remained Hg(II ) concentration (9.7 μg/L) at pH 1.0 and the highest remained concentration (940.8μg/L) at pH 13.0. Meanwhile, the changes of pH values were monitored exactly, which reveal that solution pH values change when mixing the same pH value solutions of HgCI2 and Na2S. In order to explain the phenomena and determine the reaction paths of Hg(II) reacting with S( II ) in the solution, the concerned thermodynamics was studied. Species of S( II )-H2O system and Hg(II)-H2O system at different pH values were calculated, and then the species distribution diagrams of S(II)-H2O system, Hg( II )-H2O system and Hg( II )-Cl-OH--H20 system were drawn. Combining the experimental data and thermodynamic calculation, the mechanism of Hg(II) reacting with S(II) was deduced. The results indicate that different species of S( II ) and Hg(II) have the diverse reaction paths to form HgS precipitate at different pH values and the standard Gibbs free energies change (△tGm^⊙) of those equations are also calculated, which can provide a guidance for mercury-containing wastewater treatment with Na2S. 展开更多
关键词 mercury species Na2s THERMODYNAMICs reaction path wastewater treatment △tGm^⊙
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BUILDING A MODERATELY PROSPEROUS SOCIETY IN ALL RESPECTS——Poverty Reduction: Xi Jinping’s Statements and Chinese Path 被引量:5
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作者 Huang Chengwei Yuan Quan 《China Economist》 2020年第1期2-23,共22页
After the founding of the People’s Republic of China, the Chinese people have been struggling against poverty amid national development under the leadership of the Communist Party of China(CPC). Since reform and open... After the founding of the People’s Republic of China, the Chinese people have been struggling against poverty amid national development under the leadership of the Communist Party of China(CPC). Since reform and opening up, in particular, China has planned for and organized development-oriented poverty reduction practices on a broad scale with remarkable achievements and blazed a new path of development-oriented poverty reduction with Chinese characteristics. This path is both an essential component of Chinese socialism and a result of the CPC’s ideological improvement on poverty reduction. Since the 18 th CPC National Congress in 2012, the whole Party, country, and society have been called upon to fight the battle against poverty on a full-scale under the guidance of General Secretary Xi Jinping’s important statements on poverty reduction, unveiling a new stage for China’s development-oriented poverty reduction in the new era. China’s unprecedented poverty reduction achievements have enriched the path of poverty reduction with Chinese characteristics. Xi Jinping’s insightful and coherent statements on poverty reduction represent the latest results of Marxist anti-poverty theories and comprise an essential part of Xi Jinping Thought on Socialism with Chinese Characteristics for the New Era. His guidelines are the basis for the brilliant achievements of China’s poverty reduction endeavors, and will contribute Chinese experience and wisdom to global poverty governance. 展开更多
关键词 poverty reduction path with Chinese characteristics Xi Jinping’s statements on poverty reduction poverty reduction ideas battle against poverty
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The Shortest Path Analysis Based on Road Network 被引量:1
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作者 Chaozheng DU 《Asian Agricultural Research》 2017年第6期98-100,共3页
Rational planning of agricultural product transport route from initial node to destination node can effectively reduce the cost price of agricultural products,and the calculation of shortest path between any two point... Rational planning of agricultural product transport route from initial node to destination node can effectively reduce the cost price of agricultural products,and the calculation of shortest path between any two points also affects people’s daily travel.Taking Heze Railway Station to Heze College for example,with remote sensing image data as the base map,we conduct vectorization and topological analysis on roads in the target area.With Dijkstra as theoretical basis of shortest path algorithm,we use ArcG IS network analysis method to build road network,and calculate the planning program of the shortest distance path,the shortest path by driving and the shortest path by walking. 展开更多
关键词 shortest path Dijkstra’s algorithm Road network model Network analysis
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Hooke's Atom in an Arbitrary External Electric Field: Analytical Solutions of Two-Electron Problem by Path Integral Approach
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作者 蔡亮 张萍 +1 位作者 杨涛 潘孝胤 《Communications in Theoretical Physics》 SCIE CAS CSCD 2011年第4期565-568,共4页
By using the path integral approach, we investigate the problem of Hooke's atom (two electrons interacting with Coulomb potential in an external harmonic-oscillator potential) in an arbitrary time-dependent electri... By using the path integral approach, we investigate the problem of Hooke's atom (two electrons interacting with Coulomb potential in an external harmonic-oscillator potential) in an arbitrary time-dependent electric field. For a certain infinite set of discrete oscillator frequencies, we obtain the analytical solutions. The ground state polarization of the atom is then calculated. The same result is also obtained through linear response theory. 展开更多
关键词 Hooke's atom path integral PROPAGATOR POLARIZATION
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South China's path to shipbuilding excellence
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作者 郝克兰 《中国远洋航务》 2006年第11期44-47,共4页
关键词 DNV 挪威船级社 south China’s path to shipbuilding excellence
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Hierarchical robot control structure and Newton's divided difference approach to robot path planning
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作者 Chan Kit Wai, Prahlad Vadakkepat, Xiao Peng (Dept. of Electrical and Computer Engineering, National University of Singapore, Singapore 119260) 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2001年第3期303-308,共6页
A hierarchical robot control is proposed for robot soccer system. The Newton’s divided difference is utilized in robot path planning. This paper describes the problems encoutered, software design considerations, visi... A hierarchical robot control is proposed for robot soccer system. The Newton’s divided difference is utilized in robot path planning. This paper describes the problems encoutered, software design considerations, vision algorithm and controls of individual robots. The solutions to the problems implemented are simple and direct. It is observed that many of the ideas and solutions can be evolved based on simple theories and concepts. This paper focuses on software structure of multi agent controls, vision algorithm and simple path planning method. 展开更多
关键词 path plannin Newton’s divided difference multi agent controls
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50 Gbit/s前传光模块关键技术研究与应用展望
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作者 盛夏 马涛 +1 位作者 刘昊 冯佳 《电信科学》 北大核心 2024年第5期23-37,共15页
随着全球5G网络的规模化商用及移动互联网流量的迅猛增长,更为丰富的无线频谱资源得以释放,高速率光模块在无线前传网络中的需求日益凸显。聚焦于50 Gbit/s前传光模块的关键技术,深入剖析了前传网络的两种主要组网方式,分析了前传链路... 随着全球5G网络的规模化商用及移动互联网流量的迅猛增长,更为丰富的无线频谱资源得以释放,高速率光模块在无线前传网络中的需求日益凸显。聚焦于50 Gbit/s前传光模块的关键技术,深入剖析了前传网络的两种主要组网方式,分析了前传链路的典型传输距离及链路损耗情况,探讨了10 km场景下粗波分复用(coarse wavelength division multiplex,CWDM)中各波长的最大色散值和最小色散值,并研究了相应的色散补偿策略,通过实验验证了不同多径干扰(multi-path interference,MPI)强度下系统光功率代价的变化,详细分析了多径干扰噪声对系统误码性能的潜在影响,为前传光模块参数的优化提供了重要的理论依据。此外,深入研究了50 Gbit/s前传光模块的光电芯片技术方案,对多种不同类型光模块的参数性能进行了严格的测试,提出了针对50 Gbit/s前传光模块光电接口参数的标准化建议,详细介绍了当前50 Gbit/s前传光模块在国内外的标准现状,并展望了未来应用的发展趋势。 展开更多
关键词 5G网络 50 Gbit/s前传光模块 色散 多径干扰 光电接口参数
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The path and countermeasures of increasing government’s governance capacities in energy-saving renovation of existing buildings
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作者 GUO Han-ding WANG Feng-hui +1 位作者 WU Hong-min ZHANG Yin-xian 《Ecological Economy》 2021年第1期48-59,共12页
The dual functions of government participation and governance in the development of the existing building energy-saving renovation market determine the importance of the government’s scientific and effective actions.... The dual functions of government participation and governance in the development of the existing building energy-saving renovation market determine the importance of the government’s scientific and effective actions.Continuously improving the government’s role is to promote the effective operation of the existing building energy-saving renovation market.Based on the inherent requirements of improving the government governance capacity in the development of the existing building energy-saving renovation market,this paper constructs the implementation path for the development of the existing building’s energy-saving renovation market from the three dimensions of practical concept,practical process and practical methods.From the four aspects of improving the legal and regulatory system,building a market information sharing platform,establishing a sound market supervision mechanism,and consolidating and improving the market accountability system,we will structure the existing building energysaving renovation market development to improve the government’s ability to restrain and implement measures.From the four levels of improving the market incentive mechanism,optimizing the market financing environment,clarifying the position of market resource allocation,and building a social operation platform,design measures to improve government incentives in the development of the existing building energy conservation renovation market.From the shaping of governance yuan organizational roles,governance capacity and responsibilities of departments at all levels to define boundaries,to build four main interactive platform governance perspective,the main parties demand balance the interests of both the governance capacity development planning in the government market,building energy-saving market to enhance the implementation of countermeasures.In order to promote the healthy and sustainable development of the existing building energy-saving renovation market based on the enhancement of government governance capacity. 展开更多
关键词 energy-saving renovation of existing buildings market development government’s governance capacity path selection implementation countermeasures
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固定翼UAV路径跟踪的全局稳定积分滑模S面控制
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作者 陈鹏云 张国兵 +2 位作者 李佳成 关通 石上瑶 《计算机工程与应用》 CSCD 北大核心 2024年第13期353-360,共8页
针对固定翼无人机的三维路径跟踪控制问题,设计了一种基于全局稳定积分滑模S面模型的内外环控制器。控制器外环采用全局稳定积分滑模控制,内环采用S面控制。设计控制器外环的全局稳定积分滑模控制律,并采用Lyapunov理论证明所设计控制... 针对固定翼无人机的三维路径跟踪控制问题,设计了一种基于全局稳定积分滑模S面模型的内外环控制器。控制器外环采用全局稳定积分滑模控制,内环采用S面控制。设计控制器外环的全局稳定积分滑模控制律,并采用Lyapunov理论证明所设计控制律的稳定性。对内环的指令信号设计S面控制器,考虑到S面控制器中求导的复杂性,引入二阶微分器,解决内环中导数存在积分爆炸的问题。半物理仿真试验结果表明,提出的控制器能精确跟踪期望路径,具有良好的控制性能和抗干扰性能。 展开更多
关键词 无人机 全局稳定 路径跟踪 运动控制 滑模控制 s面控制
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Historical Conditions and Experiences Summary of China’s Human Rights Development Path Since the Founding of the PRC
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作者 唐颖侠 LI Xian(译) 《The Journal of Human Rights》 2019年第3期295-307,共13页
Since the founding of the People’s republic of china,the path of human rights development in china has been based on national liberation and state sovereignty.The practice of human rights protection in the 30 years b... Since the founding of the People’s republic of china,the path of human rights development in china has been based on national liberation and state sovereignty.The practice of human rights protection in the 30 years before the launch of reform and opening-up accumulated the conditions for the practice after the launch of reform and opening-up.reform and opening-up have provided the great motivation and opportunity for the development of human rights in china.against the background of international practice,china’s human rights development path,since the founding of the People’s republic of china,has been developed in the fight against human rights diplomacy that interferes in china’s internal affairs with human rights used as a political tool.it has gone through the process from evasion to passive counterattacks,and then actively participating and playing a leading role.The 70 years’development of human rights in china shows that human rights progress is highly dependent on the country’s construction of the rule of law,and the coordinated and comprehensive promotion of human rights protection policies promotes the overall progress of the human rights.in order to promote human rights with development,the transition from the top-down path to the combination of top-down and down-top path is suggested. 展开更多
关键词 the People’s REPUBLIC of China the path of human RIGHTs development historical conditions sUMMARY of experiences
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Environmental Protection on the path of China's Modernization Drive
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《International Understanding》 2002年第3期18-22,共5页
关键词 Environmental Protection on the path of China’s Modernization Drive
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Research on the Teaching Optimization Path in Children’s Creative Art Curriculum Under the Perspective of“Sanquan Education”
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作者 Guiju Li 《Journal of Contemporary Educational Research》 2023年第12期136-141,共6页
Children’s creative art curriculum is a professional course supported by art materials and techniques and facilitated through creative activities,aiming at cultivating students’ability to organize creative art activ... Children’s creative art curriculum is a professional course supported by art materials and techniques and facilitated through creative activities,aiming at cultivating students’ability to organize creative art activities using various art materials and techniques.In light of the evolving focus in China’s colleges and universities from“what to know”to“how to apply,”the pivotal question for educators is how to maximize the value of children’s creative art curriculum.Based on this,this article takes“Sanquan education”as the starting point,combines factual and theoretical arguments,and analyzes the teaching optimization path of children’s creative art curriculum under the perspective of Sanquan education,to improve the quality and efficiency of teaching. 展开更多
关键词 sanquan education Children’s creative art curriculum Teaching optimization paths
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Taking the Path of Poverty Reduction with Chinese Characteristics to Promote New Progress in China's Human Rights——A Keynote Speech at the Opening Ceremony of 2018 Beijing Forum on Human Rights
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作者 向巴平措 HU Liang(译) 《The Journal of Human Rights》 2018年第6期603-606,共4页
The 2018 Beijing Forum on Human Rights opens on this wonderful autumn day.On behalf of the China Society for Human Rights Studies, I wish to express warm congratulations on the opening of the forum and a sincere welco... The 2018 Beijing Forum on Human Rights opens on this wonderful autumn day.On behalf of the China Society for Human Rights Studies, I wish to express warm congratulations on the opening of the forum and a sincere welcome to all guests from home and abroad. 展开更多
关键词 Taking the path of Poverty Reduction with Chinese Characteristics to Promote New Progress in China’s Human Rights A Keynote speech at the Opening Ceremony of 2018 Beijing Forum on Human Rights
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S形进气道纤维铺放轨迹规划和优化方法 被引量:15
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作者 邵忠喜 富宏亚 +1 位作者 韩振宇 刘源 《宇航学报》 EI CAS CSCD 北大核心 2010年第3期855-861,共7页
为研究纤维铺放轨迹规划和优化算法,在分析等铺放角法和等距偏置法两种轨迹规划方法的基础上,提出基于纤维带边缘曲线的轨迹规划方法和纤维带丝束数量计算方法。在轨迹铺放角范围满足设计要求的前提下,将等铺放角法和等距偏置法两种轨... 为研究纤维铺放轨迹规划和优化算法,在分析等铺放角法和等距偏置法两种轨迹规划方法的基础上,提出基于纤维带边缘曲线的轨迹规划方法和纤维带丝束数量计算方法。在轨迹铺放角范围满足设计要求的前提下,将等铺放角法和等距偏置法两种轨迹规划方法相结合,提出以曲线在曲面内等距偏置为核心的铺放轨迹优化方法。该算法可以提高铺放设备的工作效率,并对纤维带丝束数量、纤维重叠面积、纤维间隙面积等铺放信息的计算方法进行了分析。最后将以上分析结果应用到S形进气道曲面的铺放轨迹规划中,证明了该铺放轨迹规划和优化方法的可行性。 展开更多
关键词 纤维铺放 轨迹规划 轨迹优化 s形进气道
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S_3分子的结构与最可几解离过程理论研究 被引量:3
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作者 王志刚 敖淑艳 +2 位作者 闫冰 潘守甫 于俊华 《高等学校化学学报》 SCIE EI CAS CSCD 北大核心 2004年第8期1529-1532,M007,共5页
用量子化学从头算方法 ,计算得到了 S3分子优化的几何结构 (基态和几个低激发态 ) ;研究了其在 C2 v与 Cs群对称性下的解离过程 ,给出两种群对称性下基态和激发态的势能曲面及等高投影图 ;
关键词 s3分子 多组态自洽场 分子结构 解离路径
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过特定顶点集S的S-D-圈与S-D-路 被引量:2
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作者 郑苏娟 孙志人 《南京师大学报(自然科学版)》 CAS CSCD 1997年第1期10-15,18,共7页
利用邻域交给出了图G的每个S-最大圈都是S-D-圈的一个充分条件.并给出了对任意{u,v}V(G),G的每条(u。
关键词 最大圈 最大路 简单图 顶点集 连通图
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PLS路径模型在省域高校科技活动综合评价中的实证研究 被引量:10
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作者 孔祥沛 孙继红 《科技进步与对策》 CSSCI 北大核心 2010年第7期122-126,共5页
对高校科技活动进行综合评价是科研管理的重要课题之一。基于PLS路径模型,建立各省高校科技活动综合评价指数,运用2007年的数据,对31个省的高校科技活动进行了综合评价。结果显示:"知识产权产出"和"投入"是对省域... 对高校科技活动进行综合评价是科研管理的重要课题之一。基于PLS路径模型,建立各省高校科技活动综合评价指数,运用2007年的数据,对31个省的高校科技活动进行了综合评价。结果显示:"知识产权产出"和"投入"是对省域高校科技活动综合水平影响最大的两个因素,西部大多数省份高校的科技活动水平落后于中东部。 展开更多
关键词 PLs路径模型 科技活动 综合评价指数
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考虑水流路径长度的S型曲线超高段纵坡研究 被引量:10
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作者 张卓 高建平 《重庆交通大学学报(自然科学版)》 CAS 北大核心 2013年第4期594-596,691,共4页
雨天公路S型曲线超高缓和路段易形成积水,影响行车安全。以力学为基础,运用有限差分,建立了超高渐变段的水流路径长度与纵坡的关系模型;考虑车辆发生滑水的危险状态,得到水流路径控制长度。以公路单路拱S型曲线为研究对象,对3组不同车... 雨天公路S型曲线超高缓和路段易形成积水,影响行车安全。以力学为基础,运用有限差分,建立了超高渐变段的水流路径长度与纵坡的关系模型;考虑车辆发生滑水的危险状态,得到水流路径控制长度。以公路单路拱S型曲线为研究对象,对3组不同车道数和7种不同纵坡工况下的±2%超高渐变段的水流路径长度进行分析。结果表明:纵坡由0.5%增加到6%,水流路径长度平均增大2.83倍,纵坡越大,水流路径越长;当纵坡大于4%时,不同车道的水流路径都超过了限定值。以水流路径长度为控制指标,给出了不同车道数S型曲线平缓超高路段最大纵坡建议值。 展开更多
关键词 s型曲线 超高 缓和曲线 纵坡 水流路径长度
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