TEST STUDY OF DX PILES WITH SINGLE AND DOUBLE BULBS AT NANYANG HNR THERMO-ELECTRIC PLANT
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摘要: 通过现场静荷载试验,在膨胀土地基中对桩身穿越大气影响深度并以硬塑黏土为承力盘和桩端持力层的单节DX挤扩灌注桩及以硬塑黏土为上承力盘持力层和以硬塑坚硬黏土为下承力盘和桩端持力层的两节DX挤扩灌注桩的极限承载力进行判定,分析其荷载传递机理,并对两类桩的侧阻力、盘端阻力和桩端阻力的分配及其发展规律进行研究。Abstract: Static loading tests for DX piles with single and double bulbs installed in plastic clay were conducted in field. Their ultimate bearing capacities is determined, its 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 these two kinds are studied
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Key words:
- DX pile /
- bulb bearing /
- static loading test /
- ultimate bearing capacity /
- skin-friction resistance /
- bulb resistance /
- expansive soil /
- clay
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[2] .沈保汉, 王海燕, 刘振亮, 等. 西安SXD 工程4节承力盘DX挤扩灌注桩的试验研究[J]. 工业建筑, 2009, 39(2): 1-7. .沈保汉, 贺德新. DX挤扩灌注桩与DX 液压挤扩装置[J]. 工业建筑, 2008 ,38(5):1-4. [3] .沈保汉.DX 挤扩灌注桩竖向抗压极限承载力的确定. 工业建筑, 2008, 38(5): 13-17 ,27. [4] .沈保汉. 桩基与深基坑支护技术进展[G]. 北京: 知识产权出版社, 2006.
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