| With the rapid development of economy and population in Shenzhen area, the requirement for the land becomes larger and larger. The large areas of soft foundation need reinforcement in each engineering project of Shenzhen region, due to typical geological situation there. So the study on foundation treatment and monitor technique to large area of soft soil foundation is very important to urban construction and has its important realistic meaning in the coastal region.The engineering characteristic of the sea filling soft soil in Houhai bay of Shenzhen is studied. And according to engineering characteristic, five normal dealing methods for the foundation are proposed, which are suitable for this region, while their reinforcement mechanism is analyzed as well as the applicability and the construction techniques.The fuzzy decision-making method for multi-objectives to foundation treatment scheme of soft soil is proposed. Based on the fuzzy decision-making theory for multi-objective system, the characteristics of foundation treatment scheme of soft soil were analyzed. From four aspects of reliability, construction promptness, construction time limit, and environmental influence, the index system for evaluating the project design was established for foundation treatment scheme of soft soil. Used the expert investigation to decide the weight for evaluation index, the optimum decision-making and evaluation model was deduced from fuzzy decision-making theory for multi-objective system. Its application in the actual engineering was proved to gain superior decision result.At last, the studies on the monitoring technique to the foundation of sea filling soft soil in Houhai bay of Shenzhen region are done to propose the comprehensive monitoring technique, in which, the suitable monitoring technique is chosen according to the real situation of soft soil foundation, while several monitoring projects results to the soft soil foundation are used to validate the monitoring techniques. |
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