塑料排水板堆载预压法在围垦工程软基处理中的应用

我国有相当数量处在软土地区的围垦工程需要修建,软基一般不能满足承载力及沉降的要求,须进行软基处理。结合某工程实例,介绍了软基处理的设计原则并进行了方案比较,确定最优方案的塑料排水板的布置形式,对填土施工边坡稳定性进行分析,并总结出施工要点。结果表明,采用塑料排水板堆载预压法,排水板选为正方形布置、间距为1.2 m时,工后沉降为27 cm,边坡的短期和长期稳定性均满足要求。塑料排水板堆载预压法在围垦工程软基处理中不论是技术还是经济方面,都具有明显的的优势,值得推广。

Application of Load-accumulated Preloading Method with Plastic Drains in Soft Foundation Treatment of Reclamation Project

There are many reclamation projects in China,which need soft foundation treatment as the soft foundation could not meet the needs of the bearing capacity and settlement.Here,the design principles for the soft foundation treatment are introduced,the design schemes are compared,the optimum layout for the plastic drains is determined,the stability of the slope in construction is analyzed,and the main points in construction are summarized.The results show that by using the load accumulated preloading method with plastic drains as mentioned above,the slope stabilities in the short term and long term are all satisfied,and the method has the obvious advantages in the soft foundation treatment of reclamation projects whether in the technical aspect or the economic aspect and is worth popularizing.