在我国快速城市化大背景下,/ 城市看海0 景象频繁上演, 城市内涝问题日趋突出。以往缓解城市内涝的工程 措施主要致力于提高城市排水系统的设计标准, 视角单一, 仅关注内涝问题, 缺乏并行解决城市诸多问题的考虑。 据此提出一种新型多功能城市除涝结构)) ) 地下综合体, 拟解决城市内涝、交通拥挤、管线入廊三大城市问题。地 下综合体管廊层空间的预留可有效避免由于敷设、维修各类管线造成的道路重复开挖; 交通层各运行期的不同使用 功能可有效缓解城市内涝及交通压力。首次提出地下综合体结构方案, 运用 ABAQUS 有限元软件建立三维实体 模型, 并进行静力分析; 通过案例运用, 结合水动力模型, 分析地下综合体除涝效果。结果表明: 地下综合体在两种 运行期下竖向位移及应力均较小, 结构受力合理, 局部拉应力集中部位需适当加强配筋; 新型除涝结构措施可显著 改善研究区域内涝现状。

With the r apid urbanization of China, urban pluv ial floo ds and waterlo gg ing become incr easing ly frequent and serio us. Prev ious engineering measur es to alleviate urban w aterlog ging mainly focused o n impro ving the design standards of urban dr ain2 ag e system, lacking consider ation of o ther r elated pr oblems. Thus, we pr oposed a new multifunctional ur ban w aterlog ging con2 tr ol structur e2an under gr ound complex2to tackle the three urban pr oblems: waterlo gg ing, tr affic congestio n, and lay ing pipes & wires in the ut ility tunnel. The r eser ved ro om of the utility tunnel la yer in the under gr ound complex can effectively avo id repeat2 ed ex cavation o f r oads due to installatio n and repair of va rio us pipelines. The differ ent operat ion functions o f the traffic layer can effectively relieve the ur ban waterlo gg ing and t raffic pr essure. We put forw ar d an underg round complex str ucture scheme fo r the first time, established its 3D numerical mo del with ABAQUS, and conducted static analy sis. T he waterlo gg ing co nt rol effect of the underg r ound complex was analy zed based on the hy dr o2dynamic mo del and a case study. T he results show ed that the me2 chanical pro perties of the structure wer e reasonable; the v ertical displacement and stress w ere small in the two o per ating peri2 o ds. However, r einforcement sho uld be applied in t he tensile stress concent ratio n ar ea. The underg round complex can gr eatly al2 leviate the w aterlog ging situation of t he study area.