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| Exploration on the Design Theory for Anti-sliding Composite Structure of M ini-piles |
| JIANG Chu-sheng1, ZHOU De-pei2 |
| 1. China Railway Eryuan Engineering Group Co. Ltd, Chengdu, Sichuan 610031, China; 2. Southwest Jiaotong University, Chengdu, Sichuan 610031, China |
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Abstract Research purposes:This paper studies the design theory and gives the corresponding calculation formula for anti-sliding composite structure ofmini-pile to determine the rational space, shearing force and back- landslide pushing force of composite pile for the purpose ofproviding the basis for composite structure ofmini-pile.
Research conclusions:The design of the composite structure ofmini-pile shall follow the following points: Firstly, the space between piles can be considered as 2. 5-3. 5 times of the equivalentdiameter of themini-pile. Secondly, the landslide pushing force acting on the pile can be calculatedwith the landslide analysis calculationmethod. Thirdly, the calculationmode can be simplified as to calculate the multi-column frame with rigid top slab under the effects of pushing force or earth-pressure above the sliding surface, and for simplified calculation, the things below the sliding surfacemay be considered as the fixed end. Finally, the total shearing strength of the reinforced sliding-surface by mini-piles is equal to the sliding-surface itselfplus piles'shearing strength.
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Received: 28 February 2008
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2009, Vol. 26 
