介绍三种强膨胀性地基土深基础施工方法
Three Construction Methods for Deep Foundation in Highly Expansive Soil
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- DOI:
- 作者:
- 沈全锋1, 张再良2
SHEN Quan-feng1
- 作者单位:
- 1. 中国石油工程建设(集团)公司, 北京 100011;
2. 中国石油天然气第六建设公司, 广西桂林 541004
China Petroleum Engineering Construction Corporation, Beijing 100011, China
- 关键词:
- 强膨胀性地基土;深基础;施工方法;比较
highly expansive foundation soil;deep foundation;construction method;comparison
- 摘要:
- 在苏丹南部穆格莱德盆地油田设施场区岩土工程分析与评价的基础上,总结了在强膨胀性地基土上实施钢管桩、混凝土、钢管桩—混凝土3种深基础方法的技术要求。当建筑(构)物的基础直接坐落在自然土层(强膨胀性地基土)上时,雨季基础易隆起,旱季则易下沉、开裂,从而造成上部结构倾斜或倒塌。因此需采取相应的措施来消除或减轻土的胀缩性,进而减轻对拟建建筑物的有害影响。推荐钢管桩作为重要或大型设备的深基础;对基础变形和承载力要求较高的发电机、烟囱等,采用钢管桩—混凝土深基础方案。
Three construction techniques for deep foundation in highly expansive soil, i.e. steel pipe pile, concrete and steel pipe pile-concrete are summarized based on the analysis and evaluation of the geotechnical conditions in the oilfield facility areas at the basin in southern Sudan. When structures or buildings stand on natural foundation with highly expansive soil, the foundation would swell at rainy season and subside or crack at draught season. Consequently, the structures would decline even collapse. So the corresponding measures are needed to eliminate or reduce the expansibility of soil, therefore to reduce the harmful effect on the structure expected to build. It is recommended that the steel pipe pile suits to deep foundation of important or large scale equipment, and steel pipe pile-concrete is suitable for deep foundation of generator and chimney, etc. which require higher foundation bearing capacity and more strict foundation deformation.2004,2(2): 24-26 收稿日期：2003-3-6分类号：TU475.5作者简介：沈全锋(1967-),男,湖北人,大连理工大学结构工程博士,现在中国石油工程建设(集团)公司工作.参考文献：
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