A slip-line field solution is presented for the ultimate bearing capacity of the pipeline on a purely-cohesive clay soil, taking into account the circular configuration of the pipe, the pipe embedment, and the pipe-so...A slip-line field solution is presented for the ultimate bearing capacity of the pipeline on a purely-cohesive clay soil, taking into account the circular configuration of the pipe, the pipe embedment, and the pipe-soil interfacial cohesion. The derived bearing capacity factors for a smooth rigid pipe limit to those for the conventional rectangular strip footing while the pipe embedment approaches zero. Parametric studies indicate that, the pipe-soil interfacial properties have much influence on the bearing capacity for the pipe foundation on clayedy soils.展开更多
The ecological environment in the area where the Qinghai-Tibet Railway passes through is very fragile and is showing the tendency of retrogression. So as the construction would largely disturb the earth surface and ve...The ecological environment in the area where the Qinghai-Tibet Railway passes through is very fragile and is showing the tendency of retrogression. So as the construction would largely disturb the earth surface and vegetation and would have a large quantity of earth and stone digging, the construction of the railway in this area would certainly lead to a series of questions. Through the integrated analysis of the actualities of soil erosion and water and soil conservation along the section of Tanggula-Lhasa of the Qinghai-Tibet Railway, and with the combination of the features of the railway construction and the environment, the protection measures and proposals about the soil erosion along the section of Tanggula to Lhasa of the Qinghai-Tibet Railway have been put forward, so as to reach to the purpose of holding back the further development of soil erosion along the line, improving the ecological environment in the local area and maintaining the railway in normal operation.展开更多
基金supported by the National Natural Science Foundation of China(10872198,50509022)
文摘A slip-line field solution is presented for the ultimate bearing capacity of the pipeline on a purely-cohesive clay soil, taking into account the circular configuration of the pipe, the pipe embedment, and the pipe-soil interfacial cohesion. The derived bearing capacity factors for a smooth rigid pipe limit to those for the conventional rectangular strip footing while the pipe embedment approaches zero. Parametric studies indicate that, the pipe-soil interfacial properties have much influence on the bearing capacity for the pipe foundation on clayedy soils.
文摘The ecological environment in the area where the Qinghai-Tibet Railway passes through is very fragile and is showing the tendency of retrogression. So as the construction would largely disturb the earth surface and vegetation and would have a large quantity of earth and stone digging, the construction of the railway in this area would certainly lead to a series of questions. Through the integrated analysis of the actualities of soil erosion and water and soil conservation along the section of Tanggula-Lhasa of the Qinghai-Tibet Railway, and with the combination of the features of the railway construction and the environment, the protection measures and proposals about the soil erosion along the section of Tanggula to Lhasa of the Qinghai-Tibet Railway have been put forward, so as to reach to the purpose of holding back the further development of soil erosion along the line, improving the ecological environment in the local area and maintaining the railway in normal operation.
