排序方式: 共有35条查询结果,搜索用时 890 毫秒
1.
《建材技术与应用》2022,(3):8-8
由贵阳公路管理局建设的G320线花鱼洞大桥通过中国公路学会推荐参加了国际桥梁大会(IBC)项目奖的评审,并于北京时间2022年4月5日凌晨3时33分收到国际桥梁大会(IBC)桥梁奖项评奖委员会发来邮件,邮件祝贺花鱼洞大桥从全球范围内众多杰出参评项目中脱颖而出,一举夺得第39届国际桥梁大会“古斯塔夫·林德撒尔”奖。该奖被誉为桥梁界的“诺贝尔奖”,是国际桥梁大会(IBC)为了表彰在技术和材料创新、美学价值、与周边环境的协调度及公众参与度等方面取得杰出成就的优秀桥梁而设立的奖项。以往授奖的桥梁都是跨度大、高度高的地标性大规模桥梁,本次授予跨度和高度均不突出、造价仅1.1亿元的“花鱼洞大桥”,凸显了该桥的技术含量、环保和美学价值,标志着贵州在山区峡谷桥梁“小而精”建设方面达到了一个世界认可的全新高度,更加夯实了贵州“世界桥梁博物馆”的地位。 相似文献
2.
3.
5.
Kang-Won Wayne Lee Max Mueller Ajay Singh 《土木工程与建筑:英文版》2014,(6):680-692
Pavement rehabilitation and reconstruction methods with CIR (cold in-place recycling) are alternatives that can effectively reduce the high stresses and waste produced by conventional pavement strategies. An attempt was made to predict the performance, particularly low-temperature cracking resistance characteristics of CIR mixtures. These were prepared with the mix design procedure developed at the URI (University of Rhode Island) for the FHWA (Federal Highway Administration) to reduce wide variations in the application of CIR mixtures production. This standard was applied to RAP (reclaimed asphalt pavement) to produce CIR mixtures with CSS-Ih asphalt emulsion as the additive. By adjusting the number of gyrations of the SGC (Superpave gyratory compactor) for compaction, the field density of 130 pcf was represented accurately. To secure a base line, HMA (hot mix asphalt) samples were produced according to the Superpave volumetric mix design procedure. The specimens were tested using the IDT (indirect tensile) tester according to the procedure of AASHTO T 322 procedure at temperatures of-20, -10 and 0 ℃ (-4, 14, and 32°F, respectively). The obtained results for the creep compliance and tensile strength were used as input data for the MEPDG (mechanistic empirical pavement design guide). The analysis results indicated that no thermal or low-temperature cracking is expected over the entire analysis period of 20 years for both HMA and CIR mixtures. Thus, it appears that CIR is a sustainable rehabilitation technique which is also suitable for colder climates, and it is recommended to conduct further investigation of load-related distresses such as rutting and fatigue cracking. 相似文献
6.
7.
2007年8月,业内某公司员工假冒新华社记者参加江西赣粤高速公路股份有限公司举办的公路养护设备招标会事件引起社会一片哗然。然而此事件的背后其实隐藏的是另一个所谓“国际惯例”的深层次问题——政府采购封杀国货。在此之前,江西省高等级公路管理局路面设备招标,涉及政府采购约3000万元, 相似文献
8.
9.
10.
汪晓洪 《建设机械技术与管理》2005,18(12):87-89
随着改革开放的不断深入和国民经济不断发展,我国的交通事业又进入了向高等级公路快速发展的新阶段。在这新的历史机遇下.一方面是高等级公路建设加快,公路里程快速增长:另一方面是交通流量、客货运量大幅度提高.公路的磨损和损坏速度加快.维修养护工作量增大。近几年来,为了适应自身公路养护及改扩建工程的需要.各级公路养护部门新增加了大量的筑养路机械设备。以我们贵州省为例到目前为止.贵州省各地、州、市公路管理局的机械设备价值少的也有几千万元.多的则上亿元。形成了一个较大的资源群体。 相似文献