In this paper, the author reviewed how to solve the problem that semi-infinite surface is bearing normal force using mechanics of elasticity, then introduced the method of calculating the settlement of the base, finally considering the effect that new building apply to old building' settlement.%回顾了应用弹性力学求解半无限表面受法向分布力的问题,接着阐述如何利用该问题的解法来求解基础的沉降,然后考虑新建房屋对已有房屋的基础沉降的影响,并与原房屋既有的沉降做比较.
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