深圳某工程大直径超长桩原位抗压静载试验  

A STATIC LOAD TEST OF LARGE-DIAMETER AND SUPER LONG BORED PILE OF A PROJECT IN SHENZHEN

作　　者：耿培 肖子均 杨志银 GENG Pei;XIAO Zijun;YANG Zhiyin(Central Research Institute of Building and Construction (Shenzhen) Co.Ltd,Shenzhen 518055,China)

机构地区：[1]中冶建筑研究总院(深圳)有限公司,广东深圳518055

出　　处：《工业建筑》2019年第3期198-203,共6页Industrial Construction

摘　　要：结合某软土地基中大直径超长桩的抗压静载试验,通过桩身钢筋笼上布设的钢筋测力计,测得了桩身轴力并推算出侧摩阻力,综合分析了软土地基大直径超长桩在设计荷载作用下的承载特性,明确了该工程基桩在设计荷载条件下的承载特性。试验依据沿桩长的侧摩阻力分布及桩土相对位移,结合场地地质状况,分析了各土层的侧摩阻力发挥情况。Based on a static load test of 2 large-diameter and super long bored piles in soft soil foundation, using the pre-embedding steel bar dynamometers on the pile reinforcement cage, the axial forces along pile shaft were measured and the side frictional resistances of the piles were derived, and the bearing characteristics of large diameter and super long pile in soft soil foundation were analyzed comprehensively, by which the bearing characteristics of the piles for the project under design load condition were revealed. According to the distribution of side friction resistance along the pile shaft and the relative displacement between the pile and soil, combined with the geological condition of the site, the side friction resistance in each soil layer was analyzed.

关 键 词：大直径超长桩 承载机理 实例分析 

分 类 号：TU473.1[建筑科学—结构工程]