动静力排水固结法在淤泥质地基处理工程中的应用

以广州南沙泰山石化仓储区1期淤泥质地基处理工程为背景，介绍了采用动静力排水固结法处理促淤饱和软黏土地基的基本思想和工艺。该工程施工与现场实时监测相结合，利用孔隙水压力、土体分层沉降和载荷试验等检测指标对加固效果进行了监测和检测。工程实践表明，采取动力即低能量“少击多遍”的强夯施工工艺，辅以填土预压和设置竖向塑料排水板的静力方法来加固淤泥质地基，其效果明显，促淤地基的物理力学性能和抗变形性能显著提高，整体加固效果很好，工后各项指标完全达到或超过预期值。

The application of dynamic-static drainage consolidation method on a silt ground disposal project of Guangzhou

The research based on silt ground disposal project of the first stage of Guangzhou Nanshataishan petrifaction storage area, the construction technology and idea of improving saturated soft clay with dynamic-static drainage consolidation method are described. Real time monitoring and inspecting are conducted during construction; improving effects are detected through pore water pressure, layer settlements and plate load tests etc. The results show that it is obvious to improve the silt with the new construction technology of low-energy and “few times and more cycles” dynamic compaction combined with precompression with soil load and the plastic vertical drain, the mechanical property and anti-deformation characteristics of silt are improved obviously. The whole consolidation effects are remarkable; physico-mechanical properties are better than expected.