城市中心区地铁联络线规划设计方案优化研究——以广州地铁11、13号线天河公园换乘站联络线为例

广州地铁11、13号线天河公园站地处广州市中心区,密集的建筑物、复杂的设计施工条件及较高的环境要求很大程度地限制了广州地铁11、13号线天河公园站联络线规划设计自由度。在分析原联络线方案存在问题基础上,提出采用大半径曲线使之适应盾构法施工条件和采用小半径曲线使之降低矿山法涌水涌砂施工风险两个优化联络线方案的思路,并从联络线条件、对周边环境的影响、工程风险和工程投资等方面进行比选优化研究,曲线半径为200 m的联络线方案因具有较好的技术经济效益而被推荐。研究方法及结论对高环境要求下的城市中心区地铁联络线的规划设计具有借鉴意义。最后总结城市中心区地铁联络线规划设计中应综合考虑的因素,确保最终推荐的工程方案合理可行。

Optimization Research on Planning and Designing of Metro's Tie Line in Urban Center——A Case Study of Tie Line of Tianhe Park Station of Guangzhou Metro Line No.11 and No.13

Tianhe Park Station of Guangzhou Metro Line No.11 and No.13 is located in Guangzhou urban center,where dense buildings,complex designing and construction conditions and higher environmental requirements greatly constrain the design of the tie line. Based on the analysis of the problems in the original tie line scheme,two optimization alternatives are put forward to increase the curve radius to adapt to the conditions of shield construction and to decrease the curve radius to reduce the gushing water and sand mining risk. Then a comprehensive analysis of designing scheme is conducted in terms of the line condition,surrounding environment,engineering risks and project investment. Finally,a tie line design scheme with a radius of 200 m is recommended. The research method and conclusions provide some references for the planning and design of metro tie line in urban center. The factors that should be taken into consideration in the planning and design of metro tie line in urban center are summarized to ensure that the final recommended engineering scheme is feasible.