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1 工程概况 杭州市技术监督局办公楼为5层砖混结构建筑(门厅入口处局部为框架结构),建筑面积2150m~2。基础采用钢筋混凝土条基下打350mm×350mm钢筋混凝土预制方桩,桩长12m,以粘土及粘土粉砂层作为持力层,桩端进入持力层深度5d(约1.5m)。该楼于1983年竣工使用至今,房屋各沉降观察点测得的最大沉降为8mm,最小沉降为5mm。经现场观察内外墙体及楼屋面均无结构性裂缝产生,表明总体使用情
1 Project Overview Hangzhou Bureau of Technical Supervision office building is a 5-story brick and concrete structure (entrance hall at the local frame structure), construction area of 2150m ~ 2. The foundation is 350mm × 350mm reinforced concrete prefabricated square piles. The length of the pile is 12m. The clayey and clay silt layers are used as the holding layer, and the pile ends enter the holding layer depth 5d (about 1.5m). The building was completed and put into use in 1983 so far. The maximum settlement measured at each settlement observation point is 8 mm and the minimum settlement is 5 mm. The site observation of internal and external wall and floor no structural cracks, indicating the overall use of the situation