CFG长螺旋钻机的技术工法实践(国外英文资料).doc

CFG长螺旋钻机的技术工法实践(国外英文资料) Technical engineering practice of CFG long spiral drill Geological measure things: (1) basal hold power for the sand dust (5) layer (partial clayey silt, silty clay layer 6), the standard value of subgrade bearing capacity is 220 kpa. (2) of CFG pile preset requirement: CFG pile composite foundation with borehole pressure irrigation plain cement column for discussion in recent years saw fit and using a new type of foundation disposal scheme, the way of construction is simple, fast, quality easy to stem. This technique was considered appropriate in a project, and it was satisfactory to use this technique for the first time in a project with a total height of over 100 megabytes. One may, engineering A project total construction plane or on the surface of the object size is about 230000 m2, is composed of four high-grade tower involving foreign apartment, that end in 1 # floor has started In construction, now the 2 # floor construction, total 2 # floor building 62089 was flat or the size of the object surface, three layer underground, the ground layer. The main structure of the main building is a box-shaped foundation, and the main structure type is the structure of the cast-cutting wall. 2 # building project total height 102 m, the default of 0.00 mm is fully elevation of 38.5 m, basal elevation of 15.86 m, 16.36 m, 15.56 m, goodbye to equal to the total height of 22.64 m, 22.14 m, 21.94 m. The final settlement of the main building is less than 80mm. The maximum total height of the brand is 0.8 per thousand; Dont think about the problems in the basement. The foundation bearing capacity is greater than 615 kpa. Preset depending on a parameter (a) henan sanli mechanical CFG pile, pile number 988 uniform root pile length 11.5 m uniform diameter 420 mm level such as cement C20 single pile bearing capacity of pile spacing standard 750 kn 1.29 x 1.30 m x 1.36 m x 1.42 m 1.36 1.39 150 mm thick layer sand mattress mattress layer (2) of CFG pile compos