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    题名 作者 年代 出处 被引量
1高性能聚氨酯透水混合料关键性能研究显示文摘透水路面铺装是海绵城市道路建设的重要组成部分,由高性能聚氨酯透水混合料(PUPM)构筑的环境友好型透水路面铺装展现出了独特的应用价值。为进一步明确PUPM的路用关键性能,参照国家及行业现行标准和规范,采用室内试验的方式,基于力学性能、功能特性以及空隙细观特性探索了PUPM与多孔沥青混合料(PA)的差异性。通过单轴压缩试验、单轴动态蠕变试验、低温抗裂性能和水稳定性能试验,评价了其力学性能;通过透水性能试验、抗剥落性能试验和吸声性能试验,评价了其功能特性;采用X-ray CT技术,选用空隙率、空隙等效半径、有效空隙率以及迂曲度等空隙细观结构参数,评价了其细观结构特性。结果表明:PUPM在20℃条件下的单轴抗压强度为17~19 MPa,较PA具有更强的抵抗永久变形能力、抵抗低温开裂能力、抵抗低温荷载破坏能力和抵抗水损害的能力;PUPM的透水能力约为PA的4倍,在长时间磨光作用下展现出良好的抗剥落性能,同时具有良好的吸声性能;PUPM空隙率为28%~29%,空隙等效半径等空隙细观结构参数沿试件纵向呈现出不均匀分布状态;PUPM相较PA具有更大的空隙等效半径、有效空隙率及迂曲度。PUPM因其具有出色的力学性能和功能特性,在透水路面铺装方面具有更广阔的应用前景。李添帅 陆国阳 王大为 洪斌 谭忆秋 OESER Markus 2019中国公路学报2019,32,4:32
2德国不限速高速公路路面平整度评价方法综述显示文摘平整度是衡量路面质量、评价行车舒适度的重要指标。德国拥有12.993万km的高速公路,其中约2/3的路段没有速度限制,因此德国交通管理部门对路面的功能性和安全性提出了极高的要求。针对上述课题,首先介绍中国'超级公路'的建设背景和需求,强调德国路面的平整度指标对中国道路建设的重要借鉴意义;然后回顾国内外道路平整度的评价和预测等研究手段与方法,介绍德国基于功率谱密度曲线的平均不平整指数(AUN),分析将功率谱密度曲线转化为高度-波长曲线的优点,叙述考虑人车振动反应的有效平整度指数(LWI),简述加权纵断面评价方法(WLP)的思路和步骤;最后总结德国路面平整度评价体系的发展趋势和对于中国道路平整度研究的借鉴与应用前景。王大为 王宠惠 STEINAUER Bernhard 谭忆秋 OESER Markus 2019中国公路学报2019,0,4:16
3聚氨酯前驱体基化学改性沥青及其改性机理显示文摘环保耐久材料的研究与应用对实现道路工程可持续发展具有重大的意义,采用以异氰酸酯为活性官能团的聚氨酯前驱体基反应型改性剂(PRM)制备改性沥青在环境保护和性能提升方面展现出了显著价值。采用'微观-介观-宏观'的跨尺度表征方法,对PRM改性机制进行了详细分析。通过与SBS改性沥青进行对照,评价了PRM改性沥青的流变学性能和抗热氧老化性能,明确了PRM改性沥青混合料的路用性能。研究结果表明:PRM改性过程存在明显化学变化,依托于改性过程中生成的氨基甲酸酯和脲等官能团,能够在沥青内部建立基于沥青质组分的共价交联网络结构。这一过程不仅促使沥青组分发生选择性聚集和沥青质重新构型,同时增大了沥青的表面自由能,从而获得更加稳定的内部结构。PRM改性沥青较基质沥青温度敏感性有所降低,展现出了良好的抵抗高温永久变形、抵抗疲劳破坏、抵抗低温开裂和抵抗热氧老化的能力。与SBS改性沥青相比,PRM在提升沥青高温性能、抗疲劳性能和抗热氧老化性能方面具有明显优势,并有望将改性沥青生产温度降低至140℃~150℃。结合沥青混合料路用性能测试结果,2.5%改性剂掺量PRM改性沥青混合料展现了与4%改性剂掺量SBS改性沥青混合料相当的低温性能、更好的高温性能和水稳定性能,PRM在提升沥青混合料路用性能方面具有显著优势。李添帅 陆国阳 梁栋 张洋 徐加秋 罗桑 王大为 洪斌 OESER Markus 2021中国公路学报2021,34,10:8
4Application of semi-analytical finite element method coupled with infinite element for analysis of asphalt pavement structural response显示文摘A specific computational program SAFEM was developed based on semi-analytical finite element(FE) method for analysis of asphalt pavement structural responses under static loads. The reliability and efficiency of this FE program was proved by comparison with the general commercial FE software ABAQUS. In order to further reduce the computational time without decrease of the accuracy, the infinite element was added to this program. The results of the finite-infinite element coupling analysis were compared with those of finite element analysis derived from the verified FE program. The study shows that finite-infinite element coupling analysis has higher reliability and efficiency.Pengfei Liu Dawei Wang Markus Oeser 2015Journal of Traffic and Transportation Engineering(English Edition)2015,2,1:5
5Approaches for a 3D assessment of pavement evenness data based on 3D vehicle models显示文摘Pavements are 3D in their shape.They can be captured in three dimensions by modern road mapping equipment which allows for the assessment of pavement evenness in a more holistic way as opposed to current practice which divides into longitudinal and transversal evenness.It makes sense to use 3D vehicle models to simulate the effects of 3D surface data on certain functional criteria like pavement loading,cargo loading and driving comfort.In order to evaluate the three criteria mentioned two vehicle models have been created:a passenger car used to assess driving comfort and a truck-semitrailer submodel used to assess pavement and cargo loading.The vehicle models and their application to 3D surface data are presented.The results are well in line with existing single-track(planar)models.Their advantage over existing 1D/2D models is demonstrated by the example of driving comfort evaluation.Existing'geometric'limit values for the assessment of longitudinal evenness in terms of the power spectral density could be used to establish corresponding limit values for the dynamic response,i.e.driving comfort,pavement loading and cargo loading.The limit values are well in line with existing limit values based on planar vehicle models.They can be used as guidelines for the proposal of future limit values.The investigations show that the use of 3D vehicle models is an appropriate and meaningful way of assessing 3D evenness data gathered by modern road mapping systems.Andreas Ueckermann Markus Oeser 2015Journal of Traffic and Transportation Engineering(English Edition)2015,2,2:3
6基于数据深度增强的路面病害智能检测方法研究及比较显示文摘针对路面病害人工检测方法的耗时问题和路面病害自动检测方法的检测精度问题(由于样本数据集不均衡导致),采用一种数据深度增强方法,对车载智能手机拍摄的高清路面图片数据集进行增强处理,并测试评估该数据增强方法对2种不同类型目标检测算法的提升效果.首先,鉴于实验条件及采集环境的限制,作者采用一种WGAN-GP与泊松迁移算法相融合的数据深度增强方法,通过生成不同遮挡物、不同光线条件下的道路坑槽图片,补充并均衡训练样本数据;然后,引入Faster R-CNN和基于Yolo算法的多种目标检测算法变体(Yolov5s、Yolov5m、Yolov5l、Yolov5x),通过实验比对应用数据深度增强方法后各种目标检测算法的识别精度和效率.在日本公开道路检测数据集上的实验结果显示,使用数据深度增强方法后,5种检测算法的P指标、R指标及F1指标平均提升度分别为2.8%、4.0%及3.6%;5种检测算法中,Yolov5l取得最高的F1数值,达到60.9%,若条件适宜,如在背景光线适中的测试集上,Yolov5l算法的F1数值可以达到68.7%,取得较好的效果.侯越 张慧婷 高智伟 王大为 刘鹏飞 Markus OESER Linbing WANG 陈宁 2022北京工业大学学报2022,48,6:3
7粗细集料磨光值对沥青路面长期抗滑的影响显示文摘良好的路面抗滑性能是车辆安全行驶的重要保障,而集料品质是影响沥青路面抗滑性能的重要因素之一。集料的耐磨光性能直接决定路面抗滑性能的衰变规律和抗滑终值。因此,集料磨光值的表征和评价对沥青路面全寿命周期抗滑性能的研究具有重要意义。为充分明确粗、细集料对沥青路面长期抗滑性能的影响,引入了3种新的试验方法:(1)使用Wehner/Schulze(W/S)加速磨光试验对不同种类粗、细集料的磨光值进行评价;(2)使用自主研发的轮式加速磨光机对9组试样进行加速磨光试验;(3)使用W/S试验仪抗滑测试机体在速度为60 km·h和水膜覆盖条件下测量试件磨光后的动摩擦因数。结果表明:(1)集料矿物成分是决定磨光值的重要因素,且磨光值越高沥青路面的长期抗滑性能越好;(2)密级配沥青路面细集料对路面长期抗滑性能的影响比粗集料更大;(3)W/S加速磨光试验不仅较Polished Stone Value (PSV)试验结果精度更高,还能评价细集料的抗磨光值;(4)不同抗滑检测设备与试验方法间具有较大的差异性,轮式加速磨光试验能对试件的全磨耗周期行为进行表征,W/S抗滑检测则可在高速动态旋转和水膜覆盖条件下进行检测(且不受人为操作影响和可重复性高),二者的工况模拟和工作原理具有较强的科学性与可靠性。未来工程应用中,应尽量提高细集料的磨光值,以进一步提高路面抗滑性能;同时,如需精确地表征集料磨光值差异性与路面抗滑性能之间的关系,建议使用W/S试验进行研究。何玉林 邢超 洪斌 谭茜文 王大为 OESER Markus 2022中国公路学报2022,35,9:3
8Application of semi-analytical finite element method to analyze the bearing capacity of asphalt pavements under moving loads显示文摘便于长期的基础结构财产管理系统,决定人行道的适用的能力是必要的。当前以一种静止方式进行如此的大小是普通的,然而,有静止装载的评估不对应于现实向最近的年里的连续、高的速度大小的一个趋势能被观察。计算程序 SAFEM 与在动人的负担下面评估沥青的动态反应的目的被开发并且基于一个半分析的元素方法。在这个研究工程, SAFEM 与商业有限元素软件 ABAQUS 和领域大小相比验证计算精确性。虽然自称拥有比 ABAQUS 远短的一计算时间, SAFEM 的计算精确性被发现足够高可行。因此, SAFEM 看起来是一条可行途径在动态负担下面决定人行道的动态反应并且是一个有用工具让基础结构政府分析忍受能力的人行道。Pengfei LIU Dawei WANG Frederic OTTO Markus OESER 2018Frontiers of Structural and Civil Engineering2018,12,2:3
9Calculation of skid resistance from texture measurements显示文摘There is a wide range of routine skid resistance measurement devices on the market. All of them are measuring the friction force between a rubber wheel and the wetted road surface.Common to all of them is that they are relatively complex and costly because generally a truck carrying a large water tank is needed to wet the surface with a defined water layer.Because of the limited amount of water they can carry they are limited in range. Besides that the measurement is depending on factors like water film thickness, temperature,measurement speed, rubber aging, rubber wear and even road evenness and curviness. All of these factors will affect the skid resistance and are difficult to control. We present a concept of contactless skid resistance measurement which is based on optical texture measurement and consists of two components: measurement of the pavement texture by means of an optical measuring system and calculation of the skid resistance based on the measured texture by means of a rubber friction model. The basic assumptions underlying the theoretical approach and the model itself based on the theory of Persson are presented.The concept is applied to a laboratory device called Wehner/Schulze(W/S) machine to prove the theoretical approach. The results are very promising. A strong indication could be provided that skid resistance could be measured without contact in the future.Andreas Ueckermann Dawei Wang Markus Oeser Bernhard Steinauer 2015Journal of Traffic and Transportation Engineering(English Edition)2015,2,1:3
10聚氨酯粘结剂的透水路面砖研究显示文摘上世纪九十年代中期以来,经济发展所伴随人类居住面积和交通基础设施面积的扩张,对环境造成了重大影响,并导致发生洪水的风险增加、气候条件改变和自然水循环的巨大扭曲。现代市政污水管理系统的主要目标是促进密封区域的雨水重新回到自然水循环系统。一种可能的解决方法是采用透水性路面替代不透水路面。在城镇区域,路面砖路面常常用于将地表积存雨水渗入地下,以适应建筑占地面积比例提高的规划要求。在大多数情况下,路面地路面的透水性能归功于砖接缝处填充的透水材料;然而,这种路面的透水性能通常有限度的,因为大多数混凝土路面砖本身并不透水。由于细颗粒和杂质可能堵塞粒状填缝材料,所以无法完全保持这种透水路面在使用期限内的渗透性。本研究项目旨在开发一种以聚氨酯为胶结材料的自透水性路面砖。通过对材料强度、渗透率和表面性能的综合评价,提出方法和材料。lukas renken michel simon markus oeser 崔玉忠(译) 杜建东(校) 2016建筑砌块与砌块建筑2016,,4:2
11Study of the influence of pavement unevenness on the mechanical response of asphalt pavement by means of the finite element method显示文摘Pavement unevenness affects the vehicle operating cost, speed, riding comfort, safety,pavement service life and etc. The current mechanistic-empirical(M-E) design procedure of asphalt pavements is based on the computational model of a flat pavement instead of uneven pavement as it is the case in reality. In this paper, a tire-pavement-interaction FE model is developed to investigate the influence of pavement unevenness on the mechanical responses of asphalt pavements. For both winter and summer conditions, the strain at the bottom of the asphalt layer due to the tire load is found to decrease as the wavelength of the unevenness increases. Moreover, the strain is larger at lower speeds and decreases as the speed increases. It is found that the stress levels are higher in summer conditions than under winter conditions for the same pavement irrespective of wavelength. The fatigue life increases with increase in speed of the tire for a pavement and also increases with increase in the wavelength of the pavement unevenness. The results indicate that pavement unevenness significantly influence the mechanical responses of asphalt pavements and thus influences the service life of asphalt pavements. As a result,the current M-E design algorithm of asphalt pavements should be modified to consider the pavement unevenness to allow better design processes for asphalt pavement.Pengfei Liu Visaagan Ravee Dawei Wang Markus Oeser 2018Journal of Traffic and Transportation Engineering(English Edition)2018,5,3:2
12Application of semi-analytical finite element method to analyze asphalt pavement response under heavy traffic loads显示文摘Accurate assessment of the impact of heavy traffic loads on asphalt pavements requires a computational model which is able to calculate the response of the pavement fast and precisely.Currently the most finite element analysis programs based on traditional methods have various limitations.A specific program SAFEM was developed based on a semi-analytical finite element method to overcome the problems.It is a three-dimensional FE program that requires only a two-dimensional mesh by incorporating the semianalytical method using Fourier series in the third dimension.The computational accuracy and efficiency of the program was verified by analytical verification previously.The experimental verification is carried out in this paper and the results show that the SAFEM is able to predict the mechanical responses of the asphalt pavement.Using the program SAFEM,the impact of heavy traffic loads was analyzed in terms of stress and strain distribution,surface deflection and fatigue life.The results indicate that if the asphalt pavement is subjected to the heavy traffic load more,the thicknesses and stiffness of the pavement structural layers should be increased adequately in order to support the surface deflection.The compressive stress in asphalt binder course is relatively large and increases more significantly compared with that in the other asphalt layers when the axle load becomes larger.With comparison of the predicted fatigue life,the increase of the axle load will lead to the destruction of the asphalt pavement extremely easily.Pengfei Liu Dawei Wang Markus Oeser 2017Journal of Traffic and Transportation Engineering(English Edition)2017,4,2:2
13Polygalactu-ronase is a pathogenicity factor in the Claviceps pur-purea/ryeinteraction显示文摘Oeser B Heidrich P M Müller U 2002Fungal Genetics and Biol-ogy2002,36,3:1
14Prevalence of the metabolic syndrome is increased in rheumatoid arthritis and is associated with coronary atherosclerosis显示文摘Chung CP Oeser A Solus JF 2008Atherosclerosis2008,196,:1
15Utility of a novel inflammatory marker,GlycA,for assessment of rheumatoid arthritis disease activity and coronary atherosclerosis显示文摘Ormseth MJ Chung CP Oeser AM 2015Arthritis Res Ther2015,17,1:1
16Increased coronary-artery atherosclerosis in rheumatoid arthritis: relationship to disease duration and cardiovascular risk factors 显示文摘Chung CP Oeser A Raggi P 2005Arthritis Rheum2005,52,:1
17Inflammatory mediators and premature coronary atherosclerosis in rheumatoid arthritis显示文摘Rho Y H Chung C P Oeser A 2009Arthritis Rheum2009,61,11:1
18Inflammatory mediators and premature coronary atherosclerosis in rheumatoid arthritis 显示文摘Rho YH Chung CP Oeser A 2009Arthritis Rheum2009,61,:1
19Development and validation of the visual analogue scale (VAS) spine score显示文摘KNOP C OESER M BASTIAN L 2001Der Unfallchirurg2001,104,6:1
20Serum osteoprotegerin is increased and independently associated with coronaryartery atherosclerosis in patients with rheumatoid arthritis显示文摘Asanuma Y Chung CP Oeser A 2007Atheroscle- rosis2007,195,:1
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