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许多建筑工程常建于地质条件较差、承载力低、土层厚度变化大的填土、软土、冲沟、河塘地段或特殊土地区,而建筑物、构筑物或工业设备由于上部结构和生产工艺的要求,不容许有过大的沉降或不均匀沉降;在有大面积堆料的厂房,往往引起柱基倾斜、吊车卡轨现象,有的过于严重,无法进行调整时,还需停产重建。通常的处理方法,如加大加深基础、地基加固、柱基轨道调整、凿开基础矫正柱子等都耗资太多或效果不好。为解决上述地基基础工程问题,几年来我们从一个新的方面进行了研究,即采用地基预应力的方法处理。
Many construction projects are often built on landfills, soft soils, gullies, hetang sections or special soil areas with poor geological conditions, low bearing capacity, large changes in soil thickness, and buildings, structures or industrial equipment due to the superstructure and The requirements of the production process do not allow excessive settlement or uneven settlement. In a large-area factory, the column base is inclined and the crane is stuck. Some of them are too severe. When they cannot be adjusted, they need to stop production. reconstruction. The usual treatment methods, such as deepening the foundation, strengthening the foundation, adjusting the track of the column base, cutting the foundation correction column, etc., are too costly or not effective. In order to solve the above-mentioned foundation-based engineering problems, we have carried out research from a new aspect in the past few years, that is, the use of ground prestressed methods.