Gravel Pile Composite Foundation Treatment And Detection Analysis

As afrequently-used foundation treatment methods, gravel pile has the advantages of low cost, simple construction and good reinforcing effect.It has been widely used in our country, and has achieved remarkable economic benefits and social effect. But the mechanism of its function and the analysis of the actual treatment effect, still are in the exploratory stage, with not perfect and thorough research. Combined with the detection project of gravel pile composite foundation in Xinxiang City one power plant main workshop and focus on the analysis of gravel pile composite foundation between piles after treatment of liquefaction elimination and improvement of bearing capacity, and verify its feasibility and scientific nature.The main work of this paper is as follows:1. Based on the extensive collection of the existing research results, summarized the research actuality of domestic of gravel pile composite foundation, on the basis of this, the reinforcement mechanism and failure mode of composite foundation of gravel pile are analyzed systematically, the settlement of foundation bearing capacity and foundation calculation theory for a more detailed discussion, provide the theoret-iccal basis for the practical engineering application.2. According to the discovery of the practical need of main factory building st-ructure design of a certain power plant, the foundation has carried on the detailed investigation, through to the different foundation reinforcement treatment scheme are analyzed in comparison, the adoption of gravel pile composite foundation tretreatment scheme is determined, and formulate the corresponding construction technique and quality control measures.3. According to the related specification and local experience, using the static cone penetration test, dynamic penetration test, standard penetration test and so on. The results show that the ground soil liquefaction is fully eliminated, the foundation bearing capacity is increased significantly, especially for the sand and powder soil layer, treatment effect is particularly obvious.