【摘要】 为了解决现状高速公路上增建立交形成的小间距立交在工程设计中遇到的问题,以保证交通安全、满足交通功能、减少工程造价为设计原则,分别从交通分析、总体设计、拼宽设计等几个方面提出增建小间距立交的工程设计中应关注的设计要素,使增建小间距立交群的设计方案达到安全、实用、经济的效果。所提出的设计思路、设计要素以及遇到问题的解决方案,对该类项目的工程设计具有较强的参考价值。更多还原

【Abstract】 In order to solve the problems existing in the engineering design of the small-spacing interchange formed by adding the interchange in the present expressway, and based on the design principle to guarantee the traffic safety, to satisfy the traffic functions and to decrease the engineering cost, this paper puts forward the design elements for attention in the engineering design of adding the small-spacing interchange from the traffic analysis, overall design, widening design and etc. to make the design scheme of adding the small-spacing interchange group achieve the effects of safety, function and economy. The proposed design idea, design elements and solving scheme for the existing problems can be referred for the design of the similar projects.更多还原