城市沥青路面病害成因分析及防治对策

该文采用实地测量方法,对淮安市区内八个重要路段的沥青路面进行了病害调查并按病害类型将调查结果进行了汇总,在此基础上对各类病害形成原因进行了分析,最后提出了沥青路面各类病害的防治措施,对城市沥青路面的养护维修工作具有一定指导意义。     

SMA路面的设计与施工

SMA沥青码蹄脂碎石混合料是近年来国际上应用较广的新型沥青混合料。它适合于经济高速发展下道路承担重交通荷载和高轮胎压力的要求。它各方面的优异性能是原来的密级配沥青混凝土路面无法比拟的,特别是抗高温车撤和抗滑能力。该文参阅国内外资料,结合自身参与设计、施工的经验,较系统地对SMA路面设计与施工中的相关技术问题进行了总结,并强调了影响质量的关键指标。     

土工格栅(塑料类)在良化大道加铺沥青路面工程中的应用

该文介绍了塑料类土工格栅具有抗拉强度高（大约是150-200tmpu）、摩擦系数大（0．8左右）、抗蠕变性好（超过120）、变形率小、耐久性强、施工方便等优点。对此,在道路工程中可用于新建沥青路面结构层、老路补强、加固软基、减少新老路基差异沉降、加筋路堤和挡墙等方面的施工,对抗疲劳开裂、耐高温车辙、减少反射裂缝等方面的能力有明显的帮助。     

混凝土桥面铺装上面层SMA13配合比优化设计

车辙和水损害是目前桥面铺装损害中最普遍的两大破坏形式,该文依托申嘉湖高速公路工程项目,针对混凝土桥面铺装上面层选择了三种不同级配的SMA13沥青混合料,对其路用性能指标进行实验对比分析,从中选择出最优的一种级配,该级配具有优良的高温稳定性和水稳定性,可有效预防车辙和水损害,推荐用于混凝土桥面铺装试验路工程。     

杭州湾跨海大桥改性沥青SMA混合料生产工艺与质量控制

SMA是我国近年来引进的一种新型路面结构。以杭州湾跨海大桥双层SMA铺装体系实体工程为依托,对改性沥青SMA混合料的特点、生产工艺、质量控制、技术要求及施工措施等进行阐述,并提出相关的技术改进建议。     

农村公路建设中低造价路面结构的尝试

主要针对农村公路建设中降低路面结构造价,解决地方资金筹措的问题所做的一些尝试。     

沥青路面车辙问题浅析

通过对原材料组成,结构、荷载等方面的分析,阐述了沥青路面车辙形成的原因,结合施工经验提出了一些预防车辙的具体措施。     

沥青混凝土路面预防性养护与机械

根据沥青混凝土路面的施工特点,说明了预防性养护的重要性和必要性,预防性养护机械化的可行性。     

Deconstructing development density: Quality, quantity and price effects on household non-work travel

Smart growth and transit-oriented development proponents advocate increasing the density of new land development and infill redevelopment. This is partly in order to reduce auto use, by reducing distances between trip origins and destinations, creating a more enjoyable walking environment, slowing down road travel, and increasing the market for transit. But research investigating how development density influences household travel has typically been inadequate to account for this complex set of hypotheses: it has used theoretically unjustified measures, has not accounted for spatial scale very well, and has not investigated potentially important combinations of measures. Using data from a survey of metropolitan households in California, measures of development density corresponding to the main hypotheses about how density affects travel—activity density affecting distance traveled, network load density affecting the speed of auto travel, and built form density affecting the quality of walking—are tested as independent variables in models of auto trip speed and individual non-work travel. Residential network load density is highly negatively correlated with the speed of driving, and is also highly correlated with non-work travel, both singly and in combination with other measures. Activity density and built form density are not as significantly related, on their own. These results suggest that denser development will not influence travel very much unless road level-of-service standards and parking requirements are reduced or eliminated.     

动态设计在新七道梁特长公路隧道建设中的尝试

根据兰临高速公路新七道梁隧道施工中围岩开挖和支护变形的实际情况,通过对隧道支护、衬砌结构进行动态设计的尝试,取得了预期的建设成果;提出了隧道建设动态管理的几点建议,对今后的公路隧道建设管理有一定的借鉴作用。