朱爱国    （广东省建筑设计研究院  广州 510 010）

[提要]  通过两个基坑支护结构设计实例，介绍了在深厚淤泥中进行支护结构选型时水泥搅拌桩和微型钢管桩的应用，详细阐述了支护结构的设计思路和设计方法，以及在选型过程中应注意的问题。
[关键词]  深厚淤泥  水泥搅拌桩  微型钢管桩  结构选型  设计思路  经验教训

It is introduced that cement deep mixing pile and mini steel pile are applied to bracing structure selection in deep silt through two engineering designing examples. lt describes the thinking and the method of design of deep excavation's bracing structure in detail, and gives some experience and lessons during structure selection.
Keywords: deep silt; cement deep mixing pile; mini steel  pile; structure selection; design method; experience; lessons