既有运营隧道出口匝道改建方案研究与比较  

Comparative study onreconstruction scheme of exit ramp of operational tunnel

作　　者：梁霄 Liang Xiao(Shanghai Municipal Engineering Design Institute(Group)Co.,Ltd.,Shanghai 200092,China)

机构地区：[1]上海市政工程设计研究总院(集团)有限公司,上海200092

出　　处：《山西建筑》2024年第8期157-161,共5页Shanxi Architecture

摘　　要：随着城市核心区高质量发展进程的加快,逐步涉及对城市既有交通设施的局部改造,以提高既有交通设施的服务功能,助力周边核心区的品质提升和高能级规划的落地。依托既有运营匝道改建的实际工程,分析运营匝道改建工程存在的重难点并针对性地提出了两种不同的改建方案,详细论述了运营匝道改建的设计思路、具体改建的实施方法和工序、改造过程存在的问题和应对措施;同时结合改造过程复杂程度、施工风险、实施过程“保通”需求、工程造价等方面对两个改建方案进行了系统对比。研究过程提出的改建方案设计思路、改造关键工况的应对措施等对于类似工程有一定参考意义。With the high-quality development process of central urban district,the partial transformation of existing transport facilities is gradually increasing to improve their service capability in transportation,and to enhance the quality and high-level planning of the central business district.Based on the practical engineering of the reconstruction,the major difficulties of the reconstruction and two different design schemes are analysed and proposed;the design thinking process,the construction method and procedure,the problem in reconstruction and the corresponding solution are exhaustive discussed.Meanwhile,the two different reconstruction schemes are systematically compared in terms of the complexity and risk in construction,the traffic demand,and the engineering cost.The design thinking process in reconstruction and the countermeasures on key construction stages can be referenced by similar projects.

关 键 词：既有隧道 结构改建 深基坑 加固 

分 类 号：TU921[建筑科学—建筑设计及理论]