天津滨海地区海上围堤工程的沉降监测

Settlement Observation of Seawall Project in Tianjin Binhai Area

天津滨海地区的海堤多采用大型充砂袋作为堤心,一般的地基处理方式为铺设水平砂垫层和打入竖向塑料排水板,堤心充砂袋临海侧设有块石垫层和栅拦板护面,在海堤施工过程中要求监测堤身沉降量。根据某海堤工程沉降监测实例,分析沉降量设计值与监测值存在差异的原因,就沉降监测点的布置和埋设方法等提出若干参考建议。

Large-scale sand bags are used to be core of dikes in Tianjin Binhai Area. In general,the subgrade soil is consolidated by laying horizontal sand bedding and inserting vertical plastic drains. The sand-bag dike core on the exposed side is protected by rubble bedding and armor gratings. The settlement of dike will be observed during the construction. One dike settlement observation example is adopted to analyze the cause for the difference between the design settlement value and the observed data. Meanwhile,suggestions are brought forward for laying and embedding the settlement measuring points.