深圳市龙大高速石岩外环立交改造方案研究

Research on the Reconstruction Scheme of Shiyan Outer Ring Interchange of Longda Expressway in Shenzhen

文章以深圳市宝安区龙大石岩外环立交改造工程为背景,对龙大高速石岩外环立交建设条件进行了分析,并充分结合区域地势、现状建筑物情况、石岩片区现状交通进行交通分析及提出设计思路,然后据此提出立交改造多个方案,并进行多方案深化比选,最终推荐设计龙大高速两条未建匝道,新增南往东定向匝道的方案,力求取得石岩外环立交立交改造的最优解。

Taking the reconstruction project of Longda Shiyan outer ring interchange in Bao’an district of Shenzhen as the background, this paper analyzes the construction conditions of Shiyan outer ring interchange on Longda expressway,and makes traffic analysis and puts forward design ideas in full combination with regional terrain, current situation of buildings and current traffic in Shiyan district. Then, it proposes several schemes for the interchange reconstruction on this basis and conducts in-depth comparison and selection of multiple schemes. Finally, it is recommended to design two unbuilt ramps of Longda expressway and add a southto-east directional ramp, which strives to obtain the optimal solution for the reconstruction of Shiyan outer ring interchange.