福州某９层大厦，建筑面积２万ｍ２，框－剪结构，柱网１０ｍ×１０ｍ，层高３．８ｍ，采用塑料模壳现浇双向密肋楼盖，临街转角处钢筋混凝土悬臂平板厚２００ｍｍ，挑出１．８ｍ，板端砌墙，外饰面砖。该工程建成后一年多发现转角挑出部分的第２～４层悬臂板楼面开裂，决... A 9-storey building in Fuzhou, with a building area of ​​20,000 m2, a frame-shear structure, a column net of 10m×10m, and a storey height of 3.8m. The plastic mold shell is cast in place with a two-way ribbed floor cover, and the reinforced concrete cantilever plate at the street corner is 200mm thick. , Pick out 1.8m, board-end wall, and exterior tile. More than one year after the completion of the project, it found out that the 2nd to 4th floor cantilever slabs of the corners were partially cracked.