Structural Evaluation for Maputo Airport Pavement

Introduction Structural evaluation of pavements provides awealth of information that concerns the expected be-havior of pavements[1]. Different asphalt pavementdesign and evaluation methods are described inRefs.[2-9]. Refs.[2-5,9,10] use two design meth-o…     

中国与莫桑比克典型路面结构对比分析研究

中国与南部非洲地区自然环境、气候条件、地形地貌差异较大,但路面结构设计方法却相同.作为比较,笔者以莫桑比克路面设计为例,利用弹性层状体系计算程序分别对两国典型路面结构的路表弯沉、沥青层底的拉应变和土基顶的压应变三大指标进行计算分析,发现对于干燥地区中、轻交通道路,中国的沥青路面结构形式更有利于结构疲劳寿命的增加,保证路面结构的长寿命;对于潮湿的地区,探讨了半刚性路面存在的一些问题,提出了改进的结构形式.     

Cost Comparision of Airplane Parking Methods at Apron of Maptuto International Airport

Introduction Different methods on aircrafts parking at apronsof airports were presented in Refs.[1 4]. The air-crafts can be parked at various angles with respect tothe terminal building, and they can move in and outof parking positions either by towing e…     

莫桑比克沥青路面设计介绍

沥青混凝土因其具有初始投资低、易于维修和循环使用等优点,广泛应用于世界各地,在南非和莫桑比克的路面结构中也得到广泛采用。文章介绍了莫桑比克使用的沥青混凝土设计方法(基于SATCC方法),以期与国内设计方法进行对比研究。     

沥青混合料骨架结构抗剪强度特性的试验研究

采用悬浮密实结构AC-20I、骨架空隙结构AM-20及骨架密实结构SMA-20试样,对三种典型结构的沥青混合料抗剪强度进行了对比试验研究.试验采用粗骨料大型直剪仪,探讨了球形和椭球形集料对抗剪强度的影响.结果表明:从集料级配看,骨架结构形成的抗剪强度明显大于悬浮结构形成的抗剪强度;从集料形状看,椭球体集料构成结构的内摩擦角大于球形体集料构成结构的内摩擦角,而且,骨架密实结构对集料形状最为敏感.     

An evaluation of Councils on Aging dial-a-ride systems in Massachusetts

In many cities and towns in the Commonwealth of Massachusetts, Councils on Aging are running dial-a-ride services for elderly residents. A survey of these organizations was made to determine the service characteristics of their transportation systems. While the Council on Aging dial-a-rides do not achieve productivities as high as those achieved by public transit dial-a-rides, lower operating costs are achieved on a per hour basis. Thus the costs per passenger trip are very close to those for the public transit systems. The major advantage of the Council on Aging systems is their ability to employ volunteer or inexpensive labor. These systems are thus very attractive in areas with unused volunteer resources.