这些草图是为清华大学图书馆北楼即四期工程所绘。它与前三期一起组成完整的建筑群。它们位于清华大礼堂为统领的老区(国家重点文物保护区),因而其体量和风格等需要与区内相关建筑和谐统一。四期建筑地下一层设置了24小时开放的自习室和书店,需要单设一入口。因而在场地西北角做了兼做采光、休闲及进入地下层入口的下沉广场。广场的入口以一个转了45°的小亭子为标识,与隔路相望的明斋(杨廷宝先生设计)很 These sketches are for the Tsinghua University Library North Building that is painted four projects. It forms a complete complex with the first three phases. They are located in the old district (state key cultural relics protection zone) under the command of Tsinghua University Auditorium. Therefore, their size and style need to be in harmony with the relevant buildings in the district. Four buildings on the ground floor set up a 24-hour open study room and bookstore, you need to set up an entrance. Thus in the northwestern corner of the venue, a sunken square was built that doubles as a source of light, recreation and access to the basement. The entrance to the square with a turn of 45 ° pavilion for the logo, and across the road Ming Zhai (Mr. Yang Tingbao design) is very