道路工程專業(yè)外文翻譯---軟土路基處理方法概述(文件)
【正文】 tion, squeezing ground Turkey body dense consolidation, and added with high shear strength of the pile material replacement of part of the soft soil of the threephase (gas, liquid and solid phase) portion to form a posite foundation, to improve the shear strength of purpose. Main reinforcement methods: dynamic paction, soil (or dust, fly ash plus lime) piles, sand piles, blasting, gravel pile (vibration and substitution method), lime piles, cement, fly ash gravel pile pile (CFG), the DJM France, jet grouting piles. On behalf of rubble piles, dynamic paction, cement and fly ash gravel piles, DJM France. The dynamic paction method can be used to hammer paction or dynamic paction: sand foundation and the water content in a range of soft clay foundation. Its basic principle is: the soil under the huge impact in the soil to produce a lot of pressure and shock wave, resulting in the soil of local pression, tamping points around within a certain depth to produce the fissures good drainage channel, so that the soil pore water (gas) discharged smoothly, the rapid consolidation of soil. Dynamic paction, foundation bearing capacity can be increased 34 times, pression can be reduced from 200% to 1000%. Good ram is able to hit: In theory, the best tamping can function in the foundation soil pore water pressure reaches the soil weight pressure, such tamping energy known as the best tamping energy. Therefore, according to the superposition of the pore water pressure value to determine the best tamping energy. In sandy soil, the growth and dissipation of pore water pressure of only a few minutes, the pore water pressure can not be with the tamping can increase and overlay, the maximum pore water pressure increment and the number of tamping relations to determine the best tamping can. Sea highway landslide accumulation of broken mudstone deposits thickness of 4 ~ 12M from the soil samples of the soil test report shows that for low liquid limit clay containing Water to , the cohesiveness ~ internal friction angle of ~ . Sand paction piles, rubble pile reinforcement method: a kind of posite foundation, thick soft soil replacement to handle the more difficult, the foundation soil is unsaturated cohesive soil or sand, sand paction piles or broken Shizhuang reinforcement method, the foundation soil pacting bulk density increased, pores less than to prevent liquefaction of sand in the earthquake or by vibration and improve the foundation soil shear strength and the level of resistance, reducing the consolidation settlement, so that the foundation to change uniform , play replacement, paction, drainage and to prevent the foundation to produce sliding failure, pleted ahead of the settlement to reduce the differential settlement. 3 drainage consolidation method Pressure on the soft ground and in line with internal drainage, accelerate the drainage of the soft ground, speed up the processing of soft soil consolidation known as drainage consolidation method. For saturated cohesive soil foundation in handling all types of mud, silt clay and red fill. Soft ground in the role of the additional load is gradually passed to the pore water, the void ratio decreases, resulting in consolidation deformation. In this process, with the gradual diffusion of excess pore water pressure in soil, soil effective stress, and settlement in advance or improve the settling velo
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