（中国建筑设计研究院有限公司, 北京 100044）

［摘要］敦煌莫高窟游客服务中心项目建筑新颖独特，平面形状非常不规则；结构平面尺寸超长，多为高大空间、大跨度曲面结构，构件多为不规则空间弧线、曲面，结构形式非常复杂。结合这些特点，主体结构采用钢筋混凝土框架-剪力墙结构，通过防震缝、诱导缝等解决结构超长问题，减少温度应力；接待大厅大跨度双曲屋面采用网状斜交井字梁结构；采光井采用梁柱网格结构；数字影院、上下车区等屋面采用大跨度曲面空心楼板结构；球幕影院采用开大洞的混凝土壳体结构。并对整体结构以及大跨梁、空心板、混凝土壳等构件进行详细的计算分析。施工图构件平面定位及标高表达采用方格网坐标体系，对弧线、曲面实现空间定位。通过采用这些特殊的结构形式及图纸表达方法，解决了不规则弧形、不规则曲面等复杂空间结构问题，实现了独特的建筑造型。

［关键词］混凝土壳； 网状斜交井字梁结构； 曲面空心楼板； 梁柱网格结构； 大跨结构； 诱导缝

中图分类号：TU318文献标识码：A文章编号：1002-848X(2019)22-0069-07

Structural design of Dunhuang Mogao Grottoes Tourist Service Center

Liu Jiantao, You Tianzhi, Wang Chunguang

(China Architecture Design & Research Group, Beijing 100044, China)

Abstract:The structure of Dunhuang Mogao Grottoes Tourist Service Center project has novel and unique architectural shape, and its plane shape is very irregular. The plane size of the structure is super long. Most of the structures are large space and large span curved surface structures, and the structural components are irregular space arcs and curved surfaces. The structural form is very complex. Considering these characteristics, the reinforced concrete frame-shear wall structure was adopted to solve the problem of super-long structure through seismic joints and induced joints, and to reduce the temperature stress. The large-span hyperbolic roof of reception hall adopted netlike oblique grid beam structure; the daylighting well adopted beam-column grid structure; the roof of digital cinema and car-going area adopted large-span curved hollow slab structure; and the spherical screen cinema adopted concrete shell structure with large-hole. The calculation and analysis of the whole structure, large-span beams, hollow slabs, concrete shells and other components were carried out in detail. In construction drawings, the expression of positioning and the elevation of the components adopted the grid coordinate system to realize the spatial positioning of the arc and the curved surface. By adopting these special structural forms and drawing expression methods, the complex spatial structure problems were solved such as irregular arc and irregular surface, and the unique architectural modeling was realized.

Keywords:concrete shell; netlike oblique grid beam structure; curved hollow slab; beam-column grid structure; large-span structure; induced joint

作者简介：刘建涛，硕士，教授级高级工程师，Email: liujt@cadg.cn。