杭州湾跨海大桥承台混凝土一次性浇筑

杭州湾跨海大桥海中承台采用钢套箱工艺,结构混凝土一次性浇筑的施工技术,文中对符合工况管理及时机选择、封底握裹措施、混凝土配合比及温控措施等的关键技术进行了介绍。     

MSS自行式移动模架在杭州湾跨海大桥中的应用

介绍了MSS自行式移动模架在杭州湾跨海大桥中的实际应用，可供类似工程参考。     

Observed and simulated traffic impacts from the 2013 Bay Area Rapid Transit strike

Despite high costs, many cities build public transit to address regional equity, environmental and economic goals. Although public transit accounts for a minority of trips (～5%), the impact is widely felt when service is suspended during a strike through excess road demand and slower journeys. In 2013, Bay Area Rapid Transit (BART) workers participated in two brief strikes, and the resulting traffic conditions illustrate the value of transit to drivers in the San Francisco Bay Area region. This paper tests the impact of rail transit service interruption on freeway traffic conditions using volumes and travel times. During the strike, regional freeway conditions showed negligible change. However, on facilities that parallel BART service, the impacts are as bad as the worst day of a typical week. Conditions on the San Francisco–Oakland Bay Bridge showed significant impacts with travel times and volumes nearly doubling the baseline median values on the worst day.     

海南环新英湾地区综合交通发展与规划思路

海南环新英湾地区是海南省儋洋一体化发展战略的核心承载区，依托于国家港口型物流枢纽——洋浦港，并毗邻城镇，具有典型港产城一体化发展特点。基于区域特点，全面分析了环新英湾地区交通体系存在的问题及发展形势，分类、分层科学测算交通需求。以衔接、融合、协同、支撑为原则，以对外交通系统、内部道路系统和货运体系为主要内容，综合考虑城市、人口及产业需要，统筹制定了与区域协调发展相适应的综合交通发展规划，为区域社会经济发展提供坚实支撑。