SUPOTRBO-PLUS数字无线集群系统解决方案及应用

随着专业无线通信数字化进程的不断深入,专业用户对单基站集群系统的需求越来越多。从系统结构、功能特点、结构组成及解决方案等方面,介绍一款满足DMR标准、性能稳定、功能丰富且低成本的单基站集群系统（SUPOTRBO-PLUS）。     

水泥稳定碎石基层分层摊铺一次成型施工工艺研究

水泥稳定碎石基层施工中，层间污染与损伤，上下基层裂缝相互反射，容易导致基层整体性差，层间粘结不紧密。针对基层施工可能出现的这些情况，采用有限元模拟计算各种情况下基层底部弯拉应力最大值出现的部位和大小，根据计算结果分析得出:一次成型基层时基层底部受到的弯拉应力最小，结合基层施工特点，提出分层摊铺一次成型工艺，并通过对低等级试验路段铺筑检测了基层的压实度与芯样的完整性，从而验证在低等级道路上该工艺的可行性与可靠性。     

建筑垃圾回填道路基层材料关键技术研究

随着低碳可循环建造技术的提升,建筑垃圾用于道路基层回填应用技术也日趋成熟.研究采用0％～50％不同再生骨料掺量制备再生水泥稳定碎石,并对其最大干密度、最佳含水率、无侧限抗压强度、抗冻性能、抗冲刷性能进行研究.结果表明:再生骨料的增加会使得稳定碎石材料的最大干密度、无侧限抗压强度、抗冻性能、抗冲刷性能下降,其中,抗冲刷性能受再生骨料掺量变化最为敏感.综合各主要性能变化规律,研究建议建筑垃圾回填道路基层材料中再生骨料的掺量应控制在30％以内.     

A method to find correlations between steering feel and vehicle handling properties using a moving base driving simulator

There have been several investigations to find out how drivers experience a change in vehicle-handling behaviour. However, the hypothesis that there is a correlation between what the driver perceives and vehicle- handling properties remains to be verified. To define what people feel, the human feeling of steering systems was divided into dimensions of perception. Then 28 test drivers rated different steering system characteristics of a semi-trailer tractor combination in a moving base-driving simulator. Characteristics of the steering system differed in friction, damping, inertia and stiffness. The same steering system characteristics were also tested in accordance with international standards of vehicle-handling tests resulting in characteristic quantities. The instrumental measurements and the non-instrumental ratings were analysed with respect to correlation between each other with the help of regression analysis and neural networks. Results show that there are correlations between measurements and ratings. Moreover, it is shown that which one of the handling variables influence the different dimensions of the steering feel.     

软弱地基铁路T梁预制台座基础设计

介绍了广州至珠海铁路复工工程广州制梁场制梁台座的设计过程,提出了铁路T梁制梁场因地制宜,在软弱地基上设置制梁台座的一些设计思路,为类似的铁路制梁场提供经验借鉴.     

黄土地区的路基设计

分析了黄土的特性及病害,总结了阜朝高速公路黄土路基设计的经验和方法。     

就地冷再生做为柔性基层的应用研究

介绍了冷再生做为柔性基层在营大线的实施情况,就原路面的路况调查、室内试验研究、试验路方案的确定及试验路的完成情况做了全面的阐述。     

Research on Adaptability of Semi?rigid Material as Base Course for Long-life Asphalt Pavement

In　the　light　of　semi?rigid　material　as　base　course　for　perpetual　asphalt　pavement,the　bearing　capacity　and　fatigue　life　of　asphalt　pavement　with　semi-rigid　base　cause　and　different　asphalt　layer's　thickness　were　computed　with　BISAR30　after　chosen　typical　pavement　The　impact　of　thickened　layer　on　the　stress　of　the　semi?rigid　base,the　dry　shrinkage　and　temperature　shrinkages　of　the　material　were　analyzed,and　its　adaptability　as　base　for　perpetual　pavement　was　studied　The　result　shows　that　(1)　under　the　same　load,with　thickening　of　the　asphalt　layer,the　compressive　stress　on　the　top　and　the　tensile　stress　at　the　bottom　of　the　semi?rigid　base　decrease　obviously　and　the　fatigue　life　of 　the　base　increases　substantially;　(2)the　impact　of　temperature　and　humidity　on　the 　semi-rigid　base　is　remarkably　weakened,which　leads　to　the　fractures,erosion　and　reflecting　cracks　of　the　semi?rigid　base　to　be　controlled　effectively     

级配碎石基层材料与施工工艺浅析

级配碎石是一种松散材料,可作为沥青路面的基层,研究表明,能有效改善半刚性基层收缩裂缝和反射裂缝的发生,提高基层的排水性能。本文叙述了青海省某高速公路级配碎石基层的材料组成设计及施工工艺。     

东北老工业基地区域产业协调机制与对策

针对东北老工业基地区域产业协调发展的现状和问题，提出把区域产业协调发展模式选择、区域产业集聚与产业集群形成、城市化发展空间载体与支撑效应作为东北老工业基地区域产业协调的主要机制和重要突破口，建立区域产业整体发展观及区域经济合作机制，整合产业发展的空间经济地域，促进东北老工业基地区域产业协调发展。