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陈家春

 

（福建省建筑轻纺设计院有限公司 ，福州 350001)

摘   要： 以某市商业综合体深基坑为研究对象，采取土钉墙、高压旋喷桩、水泥土搅拌桩及隔离桩等多种围护措施，探讨复杂深基坑时空动态响应特性与围护效果。结果表明： 加固方法成效显著 ，其中距离基坑 10 、20 与 30 m 处的最大应力降至 27. 4 、24. 7 和 22. 6 kPa , 相较于未加固时均下降 40%以上 ；最大水平变形量与竖向沉降值降幅均超 50% 。加固措施有效控制了土体应力和变形，为深基坑工程安全高效施工提供了保障。

关键词：复杂建筑 ；深基坑 ；时空动态响应 ；围护效果

中图分类号：TU753            

文献标志码：A           

文章编号： 1005- 8249   (2025)  02- 0079- 06 

DOI:10. 19860/j.cnki.issn1005 - 8249.2025 .02.014

 

CHEN Jiachun

(Fujian Construction Textile Design Institute Co . ,  Ltd . ,  Fuzhou 350001 ,  China)

Abstract: To study the stability of slopes containing weak interlayers, based on the treatment of a landslide in a certain water conservancy project, the factors affecting slope stability and the effectiveness of anti slip pile treatment were studied. Abaqus software was used to model and calculate the impact of changes in anti slip pile parameters on slope stability. The results show that the displacement of the upper part of the slope is relatively large among the various steps of the slope. In the depth direction of the slope, there is a certain fluctuation in the displacement of each step. The displacement at a depth of 20.2m is relatively large, but the cumulative displacement is always within a small range (±10mm). After being supported by anti slip piles, the displacement of the slope gradually tends to stabilize; Rainfall and engineering activities can cause disturbance to the slope, accelerating its instability. However, anti slip piles have a good effect on reinforcing the slope, and the cumulative displacement values are stable within the control range; Through numerical simulation optimization of anti slip pile design, it was found that the most economical and reasonable solution is when the anti slip pile is located at the second step, with a pile length of 23.4m and a pile spacing of 5m.

Key words: soft interbedded strata; field monitoring; slope stability; slip-resistant pile design optimization

作者简介： 陈家春  (1978—) ,   男 ，本科 ，教授级高级工程 师 ，研究方向：建筑结构设计。

收稿日期：2024 - 08 - 19