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唐山丰润新区住宅建筑房屋基础原设计采用混凝土条基。按常规做法,其施工周期长,土方量大,用工多,造价也较高。由于建筑物场地的地形、地貌、土质、土层分布等变化,若采用浅基础施工,要根据情况将条基加深、加宽或局部处理,施工困难。基础处理的质量对建筑物的影响亦很大。故确定改用灌注桩基础施工工艺。从已竣工的30万 m~2住宅看,技术经济效果良好。唐山丰润新区住宅基础灌注桩施工是从平场开始,直到基础工程完工的施工全过程的一系列工序采用综合机械化的施工工艺,
The original design of the foundation of residential buildings in the Fengrun New District of Tangshan adopted the concrete foundation. According to the conventional practice, the construction period is long, the amount of earthwork is large, labor is used, and the cost is high. Due to changes in the topography, landforms, soil quality, and soil distribution of the building site, if the shallow foundation construction is adopted, the foundations should be deepened, widened, or partially treated according to the circumstances, and the construction is difficult. The quality of the basic treatment also has a great impact on the building. Therefore, it is determined that the construction technology of the cast-in-place pile foundation will be changed. Judging from the completed 300,000 m2 residences, the technical and economic results are good. The construction of the foundation cast-in-place piles in the Fengrun New Area of Tangshan starts from the flat field until a series of processes in the entire construction process of the completion of the basic project adopt the comprehensive mechanized construction technology.