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五十年代,砂井堆载预压固结软土地基已在我国推广。随着对砂井、堆载、预压及排水各工序的改进,此法应用更为广泛。现预压又发展到自压,就是利用建筑物本身的重量,分级逐渐加荷施压,当地基在一级荷载作用下固结后,再施加下一级荷载,直至达到设计荷载为止,这在土坝、路基工程中较易实现,但在工民建工程中尚未试用过,它必须解决施工进度与沉降速率的协调,还必须选用合理的基础形式与上部结构体系,保证其整体刚度适应软基不均匀沉降的应力调整,从而控制平稳均匀下沉。某科研试验楼工程,对软基的处理是采用水
In the fifties, sand-filled preloaded consolidated soft soil foundations have been promoted in China. With the improvement of sand wells, surcharges, pre-pressing and drainage processes, this method is more widely used. Now that the preloading has developed into self-compression, it is to use the weight of the building itself to gradually apply the pressure. After the consolidation of the local foundation under the primary load, the next level of load is applied until the design load is reached. It is relatively easy to implement in earth dams and subgrade works, but it has not yet been tried in civil engineering projects. It must solve the coordination of construction progress and settlement rate. It must also use a reasonable basic form and superstructure system to ensure its overall stiffness is adapted. The stress of the uneven settlement of the soft foundation is adjusted so as to control the steady and uniform sinking. A scientific research pilot project, the treatment of soft ground is the use of water