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排序方式: 共有954条查询结果,搜索用时 31 毫秒
81.
本文以深圳市梅观高速为例,在路基(堤)连接方面和路面连接方面,总结了国内类似工程的实践经验,对于类似旧路改造工程,有一定借鉴意义。 相似文献
82.
文章主要探讨了价值工程在公路工程成本控制中的应用,首先介绍了价值工程的基本原理和工作程序,然后简要分析了其在公路工程的设计、招投标和施工阶段的成本控制中的应用。 相似文献
83.
我国高等级公路边坡防护的研究起步较晚,至今仍处于不断完善和改进当中。本文简要介绍了高等级公路边坡防护设计工作在我国的发展状况以及边坡破坏的主要形式和原因,并对设计工作中应注意的问题以及具体措施进行了探讨。 相似文献
84.
微表处以其优良的使用性能和显著的社会经济效益在公路预防性养护中得到广泛应用。文章介绍了微表处技术在市政道路应用过程中的一些问题及处理办法。 相似文献
85.
历史经验表明,经济危机往往孕育着新的科技革命。正是科技上的重大突破和创新,推动经济结构的重大调整,提供新的增长引擎,使经济重新恢复平衡并提升到更高水平。道路建设中的沥青新型材料就是在科技的引领下,不断推陈逝新。 相似文献
86.
土工格栅的应用很广泛,在水利工程、工民建工程和公路工程均有着大量应用。在路网改建项目,利用土工格栅进行路面病害处理,有效地减少反射裂缝、提高抗车辙能力和增加抗疲劳性能,防止基层产生过大的永久变形和疲劳破坏有着重要的作用。通过在世行贷款恢复类工程项目施工监理实践,对路面病害处理土工格栅施工进行总结。 相似文献
87.
翻浆是我国寒冷地区道路上所特有的冻害现象,在季节性冰冻地区,水文、地质条件不良路段,冬季路基土壤由于冰冻作用,路基上层水分增多,春天化冻时水分不能及时排出,使路基过分潮湿软弱,在行车作用下路面发生弹簧、裂纹、鼓包、车辙、冒泥这种现象叫做翻浆。 相似文献
88.
路基是公路的重要组成部分,是按照路线位置和一定技术要求修筑的带状构造物,承受由路面传来的荷载,应有足够的强度、稳定性和耐久性。本文根据已有的经验,对当前如何保证以最佳的效果解决好公路路基施工技术问题加以研究,使我国的公路建设再上一个新台阶。 相似文献
89.
《International journal of injury control and safety promotion》2013,20(4):328-337
Kuwait mandated seat-belt use by drivers in 1976 and by front seat passengers in 1994. The study objectives were to identify and estimate current factors associated with seat-belt use and levels of potentially unsafe driving behaviours in Kuwait. In 2010, 741 adults were surveyed regarding driving habits and history. Only 41.6% of drivers reported always using a seat belt. Front seat passenger belt use was more common (30.5%) than rear seat belt use (6.5%). Distracted driving behaviours were common, including mobile phone use (‘always’ or ‘almost always’: 51.1%) and texting/SMS (32.4%). Logistic regression indicated that drivers who were young (18–19 years), male, Kuwaiti nationals or non-Kuwaiti Arabs, drove over the speed limit, had traffic violation tickets or >1 car crashes in the last year, were less likely to use seat belts. Targeted initiatives to increase public awareness and to enforce car-safety legislation, including use of seat belts, are necessary to decrease the health burden of car crashes in Kuwait. 相似文献
90.
Rochelle Eime Caroline Finch Neville Owen Sandra Gifford Paul Vear 《International journal of injury control and safety promotion》2013,20(1):47-53
Sports venues are in a position to potentially influence the safety practices of their patrons. This study examined the knowledge, beliefs and attitudes of venue operators that could influence the use of protective eyewear by squash players. A 50% random sample of all private and public squash venues affiliated with the Victorian Squash Federation in metropolitan Melbourne was selected. Face-to-face interviews were conducted with 15 squash venue operators during August 2001. Interviews were transcribed and content and thematic analyses were performed. The content of the interviews covered five topics: (1) overall injury risk perception, (2) eye injury occurrence, (3) knowledge, behaviors, attitudes and beliefs associated with protective eyewear, (4) compulsory protective eyewear and (5) availability of protective eyewear at venues. Venue operators were mainly concerned with the severe nature of eye injuries, rather than the relatively low incidence of these injuries. Some venue operators believed that players should wear any eyewear, rather than none at all, and believed that more players should use protective eyewear. Generally, they did not believe that players with higher levels of experience and expertise needed to wear protective eyewear when playing. Only six venues had at least one type of eyewear available for players to hire or borrow or to purchase. Operators expressed a desire to be informed about correct protective eyewear. Appropriate protective eyewear is not readily available at squash venues. Better-informed venue operators may be more likely to provide suitable protective eyewear. 相似文献