摘要
在地基处理工程中工后沉降和沉降速率是卸载的重要标准,次固结沉降可以估算在一定范围内,工后沉降满足要求与否则主要由剩余主固结沉降控制。基于砂进固结理论和Asaoka方法可以推算出在堆载预压任意时间的沉降速率,运用沉降速率和剩余主固结沉降的关系,就可以推算出任意时间的主固结剩余沉降及卸载时间。在深圳—香港西部通道填海及地基处理工程中,此方法应用效果较好。
The settlement-velocity and post construction settlement including residual settlement and secondary consolidation settlement are very important unloading standard in foundation soil treatment project. The secondary consolidation settlement can be estimated within range, and the post construction settlement is mainly controlled by residual settlement. In Asaoka method, the settlement-velocity can be calculated in preloading anytime. By applying the relationship between settlement-velocity and residual settlement, the residual settlement and unloading time can also be computed. The relationship between settlement-velocity＇s logarithm and preloading time is linearity, thus the unloading time can be confirmed by the graph. The method is very effective in Shenzhen-Hongkong West Passage fill seafront and foundation soil treatment project, and may have preferable application value.
出处
《地球科学与环境学报》
CAS
2005年第4期28-32,共5页
Journal of Earth Sciences and Environment
关键词
沉降速率
软粘土
地基处理
剩余沉降
工后沉降
卸载时间
Settlement-velocity
soft clay
foundation soil treatment
residual settlement
post construction settlement
unloading time
