本期封面照片为中国建筑科学研究院建筑结构研究所承担的 ,北京物资局明光村老干部活动中心的整体旋转迁移工程。该工程已于 2 0 0 0年 11月顺利完成。此项工程是该建筑南移 2 0 .5ｍ ,同时向西旋转 4度。通过平移、旋转、与准确定位 ,最终坐落在新的基础上。该建筑建于 90年代 The cover photo of this issue is undertaken by the Institute of Building Structures, China Academy of Building Research, and the overall rotation and relocation project of the veterans activity center in Mingguang Village, Beijing Materials Bureau. The project was successfully completed in November 2000. The project is to move the building 20.0m south and rotate 4 degrees westward. Through the translation, rotation, and accurate positioning, and ultimately located on a new basis. The building was built in the 90’s