两种桩型的承载特性试验对比研究

Experimental Comparison Research of Load Bearing Characteristics on Two Types of Piles

针对山西南部某拟建电厂的地质特点,本文对两种桩型——预制方桩和管桩在该地区的工程应用进行对比研究,讨论了单桩竖向承载力的静载荷试验,分析了桩侧摩阻力和桩端阻力的发挥性状。结果表明,在该地区工程地质条件下,和管桩相比,预制桩有很大优势,单桩承载力提高了39.2%,且沉降较小,具有良好的经济和社会效益。同时,本试验研究为该地区桩型的选用提供了原始资料。

In the light of the geological environment of the building power site in the south of Shanxi province, experimental comparison of load bearing characteristics of two type of piles, precast concrete pile and prestressed-concrete pile, are studied in the paper. The bearing capacities of vertically loaded pile under static load are discussed, and the side friction of two types of piles and the character of base resistance along various pile are analyzed, respectively. The results demonstrate that precast concrete pile gets big advantages over prestressed-concrete pile under the regional geological conditions. The bearing capacity of precast concrete pile increases by 39.2%, and the precast concrete pile has minor settlement and remarkable social and economic benefits. Moreover, the original data about selected pile type are accumulated.