挤扩支盘灌注桩的试验研究
- 摘 要
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张振营1,2 吴世明1
(1 浙江大学岩土工程研究所 杭州 310027; 2 青岛建筑工程学院土木系 266033)[提要] 介绍了挤扩多支盘灌注桩在浙江杭州首次应用的工程实例,对该桩目前常用的承载力计算的各种取值方法进行了对比分析,并与现场静载荷试验结果进行了比较。与普通灌注桩相比,其单桩承载力提高60%以上,单方混凝土承载力提高1倍以上。
[关键词] 挤扩多支盘桩 承载力 载荷试验On the basis of testing data, the bearing capacity of extruding-expanding multi-brace-disk pile is studied. The conclusion shows that the bearing capacity of the multi-brace-disk pile is about l.6 times larger than general pile, and the result of bearing capacity of Tang's calculating method is close to that of loading test.
Keywords: multi-brace-disk pile; bearing capacity; loading test