国家医学中心直线加速器用房施工控制关键技术

混凝土 > 2026年第卷第04期

DOI: 10.7672 / sgjs2026040041

国家医学中心直线加速器用房施工控制关键技术

作者：陈相坤¹,陈健²,李永轩²,吕岳祥¹,吕昉淼¹,金磊¹,王灏¹

作者简介：

陈相坤，总务处副处长，重大办副主任，助理研究员，E⁃mail: chen.xiangkun@ zs⁃hospital. sh. cn

作者单位：

1.复旦大学附属中山医院，上海 200032;2.中国建筑第二工程局有限公司华东公司，上海 200135

基金项目：

∗上海市医院协会医院建筑后勤管理专委会课题：结合 AI 的新一代信息技术在国家医学中心建设项目中的探索应用（2025JZHQ005）；复旦大学附属中山医院管理科学基金：基于关键链的国家医学中心建设项目进度管理研究（2024ZSGL08）

摘要：

针对国家医学中心直线加速器用房超厚混凝土墙体与顶板施工中存在的温度裂缝控制难、高荷载架体设计复杂、斜向防辐射管线精确定位与综合安装要求高等难题，从施工材料、施工方法和综合管理开展研究，主要得出以下结论：提出了适用于超厚大体积混凝土的温控技术，通过配合比试验优选低水化热水泥、聚丙烯抗裂纤维含量，确定了最优混凝土配合比；采用一维差分法进行浇筑温度预测，并结合塑料薄膜与矿棉被复合养护措施，实现了温度场的有效控制。研发了可靠的超厚混凝土板下支撑架体施工技术，3m 厚混凝土板设计了间距 600mm×300mm 的重型盘扣架，立杆最大轴力约 47.9kN,安全系数 3.0;施工过程中通过轴力与位移监测，验证了架体在强度和稳定性方面均满足要求。建立了直线加速器房综合机电管线精益施工技术体系，通过土建与机电全专业 BIM建模，完成了碰撞检查和净高分析。基于模型构建了“定位⁃复核⁃安装”管控体系，依托 BIM 进行精细化交底和施工复核，保障超厚墙体斜向管线的精准预埋。

关键词：直线加速器；大体积混凝土；温度场；管线；建筑信息模型

English：

Addressing the challenges in the construction of ultra⁃thick concrete walls and roofs for thelinear accelerator room at the National Medical Center, such as the difficulty in controlling temperaturecracks, the complexity of high⁃load scaffolding design, and the high requirements for precise positioningand comprehensive installation of oblique radiation⁃proof pipelines, research was conducted onconstruction materials, methods, and comprehensive management. The main conclusions are as follows.Firstly, a temperature control technology suitable for ultra⁃thick mass concrete was proposed. Throughmix proportion tests, low hydration heat cement and polypropylene anti⁃crack fiber content were optimizedto determine the optimal concrete mix proportion. The one⁃dimensional difference method was used forpouring temperature prediction, and combined with plastic film and mineral wool blanket compositecuring measures, effective control of the temperature field was achieved. A reliable constructiontechnology for supporting scaffolding under ultra⁃thick concrete slabs was developed. For a 3m⁃thickconcrete slab, a heavy⁃duty scaffolding with a spacing of 600mm×300mm was designed,with a maximumaxial force of about 47.9kN and a safety factor of 3.0. During the construction process, axial force anddisplacement monitoring verified that the scaffolding met the requirements in terms of strength and stability. A lean construction technology system for comprehensive electromechanical pipelines in thelinear accelerator room was established. Through BIM modeling across civil engineering andelectromechanical disciplines, collision inspection and clear height analysis were completed. Based onthe model, a “ positioning⁃review⁃installation ” control system was constructed, relying on BIM fordetailed disclosure and construction review to ensure precise embedding of oblique pipelines in ultra⁃thickwalls.

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混凝土 > 2026年 第卷 第04期