| Since the slope behind Heaping soil deformation resulting impact on the bent structure of the study areas to carry out less,But the actual project often occur because there is no cause to consider slope behind Heaping bent structural damage case. "Port Pile norms" on the slope behind is the less mentioned heaped. Therefore, this paper relies on "five" National Science and technology support program "Perennial backwater area of the Three gorges reservoir shipping engineering construction key technology research" project, deformation of frame Bent jetty force structure issues for traits under load bank soil, use of test methods and numerical simulation model. Carry out research in different bank soil under pile loads, dynamic changes and system level football force of the Framework wharf single Bent structure stress characters, We get the following conclusions:(1) Sand slope deformation on frame wharf structure for data processing and analysis of mechanical property analyzing the physical model tests, obtained in the sand slope, slope behind Heaping moment and the role of the bay axial force distribution: Second pile biggest moment. The maximum bending moment between the two positions, mostly associated with the beam, or the soil surface position. Under the rear bank soil deformation on pewload bent structure can not be ignored; negative friction bank soil subsidence resulting greater resistance test maximum axial force appears in first pile. Conversion prototype concrete bent structure, the design should be taken into account; Conducted an impact on the dynamic changes of the water level bent structure, the test showed that the effect of lower water level, the maximum bending moment and pile bent structure axial force occurs in the beam position, the force transmitted primarily through associated beam; Embrace under the department of force, the maximum bending moment and axial force generated between the two beams, the main force is transmitted via the linking beams.(2) Through the sand-shale slope deformation on frame wharf structure for data processing and analysis of mechanical property analyzing the physical model tests, obtained at the slope of sandstone and mudstone, the rear slope of the bay role Heaping moment and axial force distribution: first pile the moment is a maximum, the maximum bending moment between the two positions, mostly associated with the beam, or the location of the soil surface. Heaping seen from the rear to make bank soil deformation on the bent structure can not be ignored. Negative friction slope soil settlement produce greater resistance, converted into prototype concrete bent structure, the design should be considered.(3)Through the sand-shale slope deformation on data processing and analysis framework wharf structure by analyzing the physical model of mechanical property tests, obtained at the slope of sand, the rear slope of the bay role Heaping moment and axial force distribution, seen from the rear Heaping make bank soil deformation on the bent structure can not be ignored. Negative friction slope soil settlement produce greater resistance, the design should be considered.(4)By numerical simulation analysis using the second method, the effect of bank soil deformation to dock bent structure. Obtained in the numerical simulation model and parameters are correct and reasonable, rational meshing condition can reflect the actual situation. |
