摘要
本文介绍了振冲碎石桩法加固土岩组合地基上的一次工程实践。建筑场地地表平坦，其下伏基岩面单向坡度达１７％～２９％。计算分析表明，拟建建筑物下的天然场地土属于地震不稳定场地。选用振冲碎石柱法进行地基处理，通过合理地选用碎石桩布置、施工方案及建筑结构措施，不仅满足了建筑物对地基承载力和变形的要求，而且成功地解决了地基土的地震抗滑稳定性问题，实现了复杂地质条件下的地基处理。
In this paper, a successful practice of vibroflotation treatment for improving uneven ground base composed Of soil and weathered rock stratum is introduced. The surface of ground is flat, but the underground weathered rock is inclined with a slope of 17% ~ 29%. Calculation and analysis show that under the designed earthquake action the building to be laid on the natural ground is not stable. Hence, vibroflotation treatment was chosed to consolidate the ground. By means of rational layout Of stone columns, special constructional and building structural measures, the composite base meets the building's demands not only for bearing capacity and deformation, but also for stability of ground base against sliding under seismic action.
出处
《建筑结构学报》
EI
CAS
CSCD
北大核心
2000年第2期68-74,共7页
Journal of Building Structures
关键词
土岩组合地基
振冲碎石桩
加固
不均匀地基
ground composed of soil and weathered rock, one-way inclined underground weathered rock, vibro-replacement stone column, stability of ground, even settlement, bearing capacity.
