Usually the poured pile by artificial excavation expanding bottom is one foundation pile style of tall building, whose quality can affect the structural safety of the construction directly.
人工挖孔扩底灌注桩是高层建筑常用的一种桩基础形式，其施工质量的好坏直接影响到建筑的结构安全。
By analyzing the mechanical characteristics of the middle-wall, the style of the base of the middle-wall is put forward for the structural stability of the twin-bore connection arch tunnel.
通过对中墙力学特性分析，提出了有利于连拱隧道结构稳定的中墙基底样式。
By analyzing the mechanical characteristics of the middle-wall, the style of the base of the middle-wall is put forward for the structural stability of the twin-bore connection arch tunnel.
通过对中墙力学特性分析，提出了有利于连拱隧道结构稳定的中墙基底样式。
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