By displacing inside clay, reducing its weight and getting rid of adverse effect of behavior degradation of inside clay, the loads of structure reduce and the integrality and stability of that increase.

• 通过以内衬箱型结构置换芯土,减轻了结构自重,解除了芯墙土性能恶化对结构的不利影响,从而达到阻止砖拱及侧墙的裂缝扩展,提高结构整体性和稳定性的目的。