综合管廊与城市下沉隧道合建方案设计

Design of Co-construction Scheme of Utility Tunnel and Urban Sinking Tunnel

摘要:

随着城市地下综合管廊的推广建设，越来越多的综合管廊面临与其他地下市政设施统筹规划更为重要。为此结合工程实际需求，提出地下综合管廊与城市下沉隧道合建思路。经比较分析，采用隧道底板与综合管廊顶板共板的结构方案，并通过优化隧道顶板和侧墙设计，既减轻了隧道自重，减少了隧道传递到下方综合管廊的竖向荷载，又提高了隧道内的采光和通风效果，还节约了造价。采用三维有限元模型计算分析，确定了共板合建方案的内力分布基本合理，无需增加隧道和管廊的结构尺寸。

Abstract:

With the promotion and construction of urban underground utility tunnel, more and more utility tunnels are facing more important coordinated planning with other underground municipal facilities. Therefore, combined with the actual needs of projects, the co-construction idea of underground utility tunnel and urban sinking tunnel is put forward. Through comparative analysis, the structural scheme of common plate for tunnel floors and utility tunnel roofs is adopted. By optimizing the design of the tunnel roof and side wall, the weight of the tunnel is reduced, the vertical load transmitted from the tunnel to the lower utility tunnel is reduced, the lighting and ventilation effects in the tunnel are improved, and the cost is saved. Based on the calculation and analysis of three-dimensional finite element model, it is determined that the internal force distribution of the common-plate co-construction scheme is basically reasonable, and there is no need to increase the structural size of the tunnel and utility tunnel.