北京地铁车站结构设计细节优化及先进止水工艺的应用
鲍凯1吕亮1高辛财1李伟伟2冀程1
Beijing Metro Station Structure Design Detail Optimization and Advanced Waterproof Technology Application
BAO KaiLYU LiangGAO XincaiLI WeiweiJI Cheng
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作者信息:1.北京市市政工程设计研究总院有限公司， 100082, 北京
2.中冶交通建设集团有限公司， 100028, 北京
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Affiliation:Beijing General Municipal Engineering Design and Research Institute, 100082, Beijing, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2022.04.043
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中图分类号/CLCN:U231.4
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栏目/Col:应用技术
摘要:
以北京地铁16号线地下车站为工程依托，总结了车站结构设计细节和基坑施工工艺的优化经验。基于工程地质及水文地质特性，选择安全经济适用的地下连续墙接头；根据地下连续墙受力特点进行分段配筋；优化钢支撑端头支撑形式。将车站公共区楼扶梯开洞处的传统下垂梁调整为暗梁，以减小中板开洞面积；统一公共区楼扶梯及其下方三角用房做法，增加站厅及站台层使用空间；在计算结果能满足结构受力安全要求下，采用隐形吊环做法。首次在北京地区暗挖车站应用超高压喷射注浆法，获得到了较好的止水和地层加固效果。实际经验表明，上述优化措施可在满足结构安全性要求下，增加车站使用空间，提高装修美观效果，节约工程投资。
Abstracts:
Based on the engineering of Beijing Metro Line 16 underground station, the station structure design details and foundation pit construction process optimization experience are summarized. Considering the characteristics of engineering geology and hydrogeology, a safe, economical and applicable joint of diaphragm wall is selected. According to the stress characteristics of diaphragm wall, sectional reinforcement is carried out to optimize the support form of steel support end. Conventional sagging beam at the opening of escalator in the station public area is replaced by concealed beam to reduce the opening area of the middle slab. The practice of escalator in public area and triangle room under it is unified, and the usable area of station hall and platform floor is increased. Under the premises that the calculation results can meet the safety requirements of the structure, the method of invisible lifting rings is adopted. The super high pressure jet grouting method is applied to the underground excavation station in Beijing for the first time, and good results of waterproof and stratum reinforcement are obtained. Practical experience shows that the above optimization measures can expand usable station area, improve decoration effect, and save project investment under the condition of meeting the structural safety requirements.
引文 / Ref:
鲍凯, 吕亮, 高辛财, 等. 北京地铁车站结构设计细节优化及先进止水工艺的应用. 城市轨道交通研究, 2022, 25(4): 199.BAO Kai, LYU Liang, GAO Xincai, et al. Beijing metro station structure design detail optimization and advanced waterproof technology application. Urban Mass Transit, 2022, 25(4): 199.
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