铁道标准设计2025，Vol.69Issue(10)：58-66,77,10.DOI:10.13238/j.issn.1004-2954.202505300006
超深超大地下枢纽巨型结构设计及拓扑优化
Design and Topology Optimization of Mega Structures for Ultra-Deep and Ultra-Large Underground Hub
摘要
Abstract
With the rapid development of urban rail transit,ultra-deep and ultra-large underground hubs will become key nodes in the optimization of urban transportation networks.Taking the Wuhe Hub of the Shenzhen-Dayawan Intercity Railway as the research object,this paper described its main engineering characteristics,including complex boundary conditions,an ultra-deep foundation pit,and an ultra-large scale.It thoroughly investigated topology optimization strategies for the overall structural scheme of ultra-deep and ultra-large underground projects in urban core areas,encompassing construction techniques and methods,retaining structural systems,and horizontal structural systems.Through comprehensive comparative studies,this paper demonstrated that adopting a structural scheme that integrates permanent and temporary structures and is adapted to the previous works and surrounding environmental elements,was a superior solution.Meanwhile,it explored critical technologies and optimization schemes for key components in the project,namely concrete-filled steel tubular column-beam joints and mega piles.By applying a topology optimization approach,the dimensions of the mega components and the consumption of steel reinforcement were significantly optimized.Based on the structural topology optimization method,the overall structural scheme and key components for constructing an ultra-deep and ultra-large underground hub under complex boundary conditions were optimized.This approach achieves optimal distribution of engineering materials,maximizes social benefits,and reduces construction costs and negative environmental impacts,while satisfying the prerequisites of safety,serviceability,and durability.The findings provide references for the design of similar ultra-deep and ultra-large underground hubs.关键词
城际铁路/地下枢纽/结构优化/永临结合/结构体系/巨型构件Key words
intercity railway/underground hub/structural optimization/integrated permanent and temporary structures/structural system/mega components分类
交通工程引用本文复制引用
杜兴华,王海振,李爱东,李建武..超深超大地下枢纽巨型结构设计及拓扑优化[J].铁道标准设计,2025,69(10):58-66,77,10.基金项目
中国铁路设计集团有限公司科技开发课题(2024B0249314) （2024B0249314）
