摘要
根据苏州地区4根大直径桥梁钻孔灌注桩桩侧摩阻力试验结果,给出了该地区主要土层的侧摩阻力及其极限摩阻力建议值。试验表明:相当一部分桩侧土层未能达到极限状态,只有54 5%～78 4%范围内的土层达到极限值;桩底沉渣直接影响桩顶沉降及极限承载力;随着长径比的加大,桩侧摩阻力发挥效率降低。
Based on the results of four large diameter bored piles under static load test in Suzhou, the magnitude of side friction of pile and its propositional magnitude are provided. It is shown that much of the soil around the pile can't be at ultimate state, with only 54.5% through 78.4% soil being at ultimate state. The bottom sediment affects tip displacement and ultimate bearing capacity. Furthermore, the efficiency of side friction decreases if the ratio of length to diameter increases.
出处
《公路交通科技》
CAS
CSCD
北大核心
2004年第1期62-66,共5页
Journal of Highway and Transportation Research and Development
关键词
桥梁
钻孔灌注桩
静载
桩侧摩阻力
桩端阻力
Bridge
Bred pile
Static load
Side friction of pile
Tip resistance of pile
