论文部分内容阅读
以遂渝铁路松软地基为工程背景,原位测试了铺设与不铺设土工格栅两种情况的粉喷桩复合地基的剖面沉降、桩顶和桩间土的土压力、土工格栅拉力。分析结果表明:桩顶和桩间土的土压力与填土高度成正比,铺设土工格栅能有效改善附加应力的传递,提高桩土应力比,粉喷桩+土工格栅加筋垫层复合地基的桩土应力比为3.75。土工格栅的拉力与沉降成幂函数关系。分析结果对的粉喷桩桩网复合地基设计有重要参考价值。
Taking the soft foundation of Suining-Chongqing railway as the engineering background, the settlement of subsidence, the earth pressure and the tension of geogrids on DJM pile foundation with or without geogrids were tested in situ. The results show that the earth pressure at the top of piles and piles is proportional to the height of earth filling, laying geogrid can effectively improve the transfer of additional stress, improve the stress ratio of pile-soil, The pile-soil stress ratio of foundation is 3.75. Geogrid tension and settlement into a power function relationship. The results of the analysis of the DJM pile net composite foundation design has important reference value.