后海T107场地风化岩划分及其桩端持力层分析  

Weathered rock classification and pile founding layer analysis for the site Lot No.T107 in Houhai

作　　者：张平新 张波 吴圣超 吴琦 

机构地区：[1]深圳市勘察测绘院有限公司,广东深圳518028

出　　处：《工程勘察》2015年第3期31-36,共6页Geotechnical Investigation & Surveying

摘　　要：深圳后海一带,基岩面高程最大-169.2m,风化岩层厚度达164.2m,风化岩的划分是工程勘察的重点。通过列举对比同一场地上不同的工程地质勘察资料,指出巨厚层风化岩分层原则宜为现场鉴定与标准贯入相结合,对其他工程勘察具有参照作用;通过邻近工程试桩资料分析,指出岩土参数的选取可按照现行深圳市标准并有所调整;通过分层、分区统计及沉降分析,给定桩端持力层建议,对本工程设计具有实际意义。The highest bedrock surface elevation is-169.2m in Houhai area,Shenzhen,and the weathered rock thickness is as great as 164.2m.The zoning of weathered rocks is an important job of geotechnical investigation.Through comparing the investigation data in a same site,the method of thick weathered rock zoning should consider both field identification and standard penetration test blows.This would be a reference for the other investigation works.It is found that the parameters could be recommended with reference to the Shenzhen local standard after the piles test data analysis.The pile founding layer could be determined after the statistical analysis of the zoning and settlement data.The study has a practical significance to the design work.

关 键 词：风化岩 分层 对比 桩端持力层 

分 类 号：TU473.1[建筑科学—结构工程]