苏州轨道交通无柱车站结构选型与受力分析
殷建1黄治龙1陈祥达2沈何杰2
Structural Selection and Stress Analysis of Suzhou Rail Transit Column-free Stations
YIN Jian1HUANG Zhilong1CHEN Xiangda2SHEN Hejie2
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作者信息:1.苏州市轨道交通集团有限公司，215004，苏州
2.北京城建设计发展集团股份有限公司上海分公司，200233，上海
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Affiliation:1.Suzhou Rail Transit Group Co., Ltd., 215004, Suzhou, China
2.Shanghai Branch, Beijing Urban Construction Design and Development Group Co., Ltd., 200233, Shanghai, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2024.08.021
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中图分类号/CLCN:U231.4
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栏目/Col:研究报告
摘要:
［目的］城市轨道交通车站所处场地狭小或净高富余时，为了创造大空间视觉效果，通常采用无柱结构形式。为了达到安全可靠、经济合理的目标，需对该无柱车站进行结构选型和受力分析。［方法］以苏州轨道交通8号线时家桥站工程为依托，采用有限元计算方法，详细分析了车站顶、中、底板采用不同结构形式时的受力特性，并提出该车站的整体结构方案。［结果及结论］无柱车站采用全拱形顶板时的受力和经济性最好；通过在车站站台层设一排柱，既改善中板受力，又利于楼扶梯孔洞的开设；底板从受力和经济性考虑采用全拱形最好，考虑施工的便利性和变形控制要求，也可采用平底拱形式。本站采用无柱拱形顶板+梁柱形式中板+平底拱形底板的结构形式，充分发挥拱形结构的受力特性，在工程造价变化不大的前提下，利用车站的富余净空，提升了站内公共区的大空间视觉效果。
Abstracts:
［Objective］ In urban rail transit stations, a column-free structure is often adopted to create a spacious visual effect when the site is narrow or there is excess height. To achieve the goal of safety, reliability, and economic feasibility, it is necessary to conduct structural selection and stress analysis for such column-free stations.［Method］ Based on the Shijiaqiao Station project of Suzhou Rail Transit Line 8, finite element calculation method is employed to thoroughly examine the stress characteristics of the station top, middle, and bottom slabs when different structural forms are used. An overall structural scheme for the station is proposed accordingly.［Result & Conclusion］ A fully arched top slab offers the best stress performance and economic efficiency for column-free stations. Setting up a row of columns on station platform level improves the stress distribution on the middle slab and facilitates the installation of stairway openings. The fully arched form is also optimal for the bottom slab considering stress and economic efficiency. However, for construction convenience and deformation control requirements, a flat-bottom arch form can also be used. This station employs a structure form of column-free arched top slab + beam-column middle slab + flat-bottom arched bottom slab. This design fully leverages the stress characteristics of arched structures, enhances the spacious visual effect of station interior public area by utilizing the excess height while maintaining a reasonable construction cost.
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