STUDY ON INTERNAL STABILITY OF SOIL-NAILING WALL WITH LEADING MINI-PILE
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摘要: 超前微桩已在软弱地基的基坑支护中得到广泛应用。而目前对土钉墙设计而言,往往把超前微桩作为一种安全储备,没有考虑超前微桩对土钉墙内部稳定性所起的作用,设计理论已滞后于工程实践。因此,从带有超前微桩的土钉墙破坏形式及其计算方法出发,编制了能够计算带有超前微桩的土钉墙内部稳定系数的程序,并且用工程实例进行验证,认为在软弱土层中打设超前微桩可以增加土钉墙内部稳定性。Abstract: With the characteristics such as simplification, promptness, decreasing the deformation of soil, increasing the stability of an excavation, leading mini-piles have been widely used for excavations in soft soil. But for the design of soil-nailing retaining wall with leading mini-piles, the role of leading mini-piles in the internal stability of soil-nail retaining wall is always neglected and design theory has been lagged behind engineering practice. Based on the failure pattern of soil-nail retaining wall with leading mini-piles and its calculation method, the program for calculating internal stability of soil-nail retaining wall with leading mini-piles has been designed.The developed program has been verfied effectively by engineering practice.
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Key words:
- leading mini-pile /
- failure pattern /
- internal stability /
- soil-nailing retaining wall
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[2] 龚晓南.土工计算及分析.北京:中国建筑工业出版社,2000 李象范,徐水根.复合土钉挡墙的研究.上海地质,1999(3):1~11 [3] 张旭辉.锚管桩复合土钉支护稳定性研究:[博士学位论文].杭州:浙江大学 ,2002
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