浅议有关复合地基技术标准中的几条规定

摘要

There are some serious disputes on several rules in the technical standards for composite foundation. We sug- gest that the deep and wide modified value of composite foundation is not less than that of natural foundation; suggest that the settle experience coefficient for natural foundation should be modified when they are used for composite com- pression modulus ; suggest that the influence of cushion layer should be considered in load test ; suggest that the settle- ment ratio indicator for composite foundation should be united and in accordance with their natural foundation when the characteristic value of composite foundation bearing capacity is determined through the load test.%与复合地基有关的各种技术标准中,有一些规定存在着争议。建议复合地基承载力特征值深宽修正后不小于相对应天然地基土承载力特征值的修正值;建议在使用承载力比法确定复合压缩模量后再按分层总和法计算复合地基沉降量时,对目前使用的天然地基的沉降计算经验系数进行修正;建议荷载试验时,试验结果应考虑荷载试验垫层的影响;建议在载荷试验确定各种桩体复合地基承载力特征值时,沉降比指标统一且与相应的天然地基的指标一致。