后插筋旋喷桩-灌注桩复合式基坑支护结构设计方法

The Design Method of Post Reinforcing Jet Grout Pile-bored Pile Compound Protecting Structure of Foundation Pit

摘要:

后插筋旋喷桩 -灌注桩复合式基坑支护结构是根据实际工程需要设计出的一种新型结构 ,具有抗弯能力强、止水效果好、造价低廉和施工方便等优点 ,具有很好的应用前景。提出了该基坑支护结构截面抗弯计算的力学模型和设计计算方法。

Abstract:

The compound protecting structure of foundation pit, which combines post reinforcing jet grout piles with bored piles, is a new type of structure designed to meet the need of the special environment of an actual project. It has the advantages of high anti bending ability, good leak proof, lower cost and easier handling in building structure. It can be widely used in other cases. The mechanical model of calculating the bending resist ability of the cross section of the structure and the design method of the structure are presented in this paper.