内蒙NBZK电厂三节和四节DX挤扩灌注桩的试验研究  

TEST STUDY OF DX PILES WITH THREE AND FOUR BULBS AT NBZK ELECTRIC POWER PLANT IN INNER MONGOLIA

作　　者：沈保汉[1] 王衍[2] 齐迪[3] 张新生 孙君平 贺德新 兰岚5 

机构地区：[1]北京市建筑工程研究院,北京100039 [2]北京世纪旗云软件技术有限公司,北京100088 [3]中国电力工程顾问集团东北电力设计院,长春130021 [4]北京中阔地基基础技术有限公司,北京100097

出　　处：《工业建筑》2009年第2期55-63,共9页Industrial Construction

摘　　要：通过现场静荷载试验,对以硬塑黏土和坚硬黏土为承力盘和桩端持力层的三节和四节DX挤扩灌注桩以及以砾砂为桩端持力层的直孔灌注桩的极限承载力进行判定,分析荷载传递机理,并对桩侧阻力、盘端阻力和桩端阻力的分配及发展规律进行研究。Static loading tests for DX piles with three and four bulbs installed in hard clay and stiff clay also for uniform bored pile installed in gravel sand were conducted in field. The ultimate bearing capacities are determined, and the load transfer mechanism is analysed, and the distribution and development of the skin-friction resistances, the bulb resistances and the tip resistances of DX piles of this kind are studied.

关 键 词：DX桩 承力盘 直孔桩 静荷载试验 极限承载力 侧阻力 盘端阻力 

分 类 号：TU473.1[建筑科学—结构工程] TU473.11[建筑科学—土工工程]