土工布在高速公路软基加固中的应用分析

Analysis and Application of Geotechnical Fabric in Improvement of Soft Ground of Express Highway

阐述了土工布的加筋作用机理,并结合某高速公路实测资料,提出了侧向位移-沉降曲线分析法,引进了荷载扩散系数概念,分析了土工布在提高地基承载能力、约束侧向位移和侧向挤出量、减小沉降和提高抗滑稳定性等方面的作用。

The paper expounds on the mechanism of geotechnical fabrics and an analytical method of lateral displacement-settlement curves is proposed in the light of the measured data of an express highway, which has incorporated the concept of efficiency factor of load transmission. By using the analytical method, the effect of geotechnical fabrics in improving the bearing capacity of foundation, restricting lateral displacement and ＂squeezeout＂ of soil, minimizing settlement of soil and enhancing the stability of soil against sliding has been analyzed.