闽粤沿海花岗岩风化分带方法及地基承载力的研究

Zoning Method of Weathering States of Granites and Bearing Capacity of the Foundation in Fujian and Guangdong Coast

本文在现场调查和大量现场测试的基础上,探讨了闽粤沿海花岗岩风化程度的分带方法,建立了以定性分带为开端、模糊模式识别为终端的划分风化程度的分带系统,在此基础上,研究了花岗岩残积土及风化花岗岩的工程地质特性.研究结果表明:(a)花岗岩残积土是一种强度较高、压缩性较低的土体,可作为20层以下中高层建筑的天然地基;(b)风化花岗岩的承载力高于规范的取值.文中还给出了地基承载力的两种估算方法及风化花岗岩(土)

The Zoning methads of weathering states of granites for Fujian and Guongdong coast are approached on the basis of site investigation and a large number of site tests. A weathering states zoning system is buiet, which begins with qualitative zoning and ends in fuzzy pattern direct recognition. Furthermore, the engineering geological properlies of Weathered residual soil of granites and weathered granites are analysed. The fellowing conclusions are reached: (a) weathered residual soil of granites is a soil mass which has comparalively high mechanical strength, low compressblity. It is a good natural foundation for buildings hower than 20 storeys. (b)The bearing capacity of the foundation of weathered granites is higher than what is given by the code. Two estimations methads are presented. Finally, some empirical values of the bearing capacity of ground of weathered granitel (soils) are given.