关于胶州湾地区真空-堆载联合预压沉降计算的研究  

Research of Settlement Calculation for Vacuum Combined Surcharge Preloading in Jiaozhou Bay

作　　者：顾龙声[1,2] 顾长存[1,2] 吴跃东[1,2] 

机构地区：[1]河海大学岩土工程科学研究所 [2]岩土力学与堤坝工程教育部重点实验室,南京210098

出　　处：《科学技术与工程》2012年第23期5918-5922,共5页Science Technology and Engineering

摘　　要：胶州湾地区的工程观测资料表明,现有规范对胶州湾地区真空-堆载联合预压地基的沉降估算修正系数适用性较差。为了探讨这个问题,先分析了胶州湾地区主要软土层(淤泥质亚黏土层)的物理力学性质的规律性。然后依据高压固结试验资料,将胶州湾地区真空-堆载联合预压法实测结果与压缩系数修正后的计算结果进行对比分析。分析结果表明,胶州湾地区真空-堆载联合预压选取修正后的压缩系数计算出的沉降量更加合理。Observations of settlement for vacuum combined surcharge preloading engineering in j iao zhou bay show that the results of settlement calculation used the settlement correction factors based on the national code of China are unreasonable. The regularity of the physical and mechanical properties of the silty clay layer in Jiaozhou bay is analyzed, and the practical settlements and the results used .the corrected compression coefficient are compared based on the high-pressure consolidation test data. It is concluded that fhe results of settlement calculation are more reasonable by using the corrected compression coefficient.

关 键 词：真空-堆载联合预压 沉降计算 压缩系数 沉降量 

分 类 号：TU432[建筑科学—岩土工程]