| Sluice can be built on soil foundation or batholith. The Structure analysis method of the sluice on the soil foundation has been studied more, and structure analysis of the sluice on the batholith remains to be strengthened. Traditionally sluice structure was separated each component and then sluice structure was calculated. The traditional method is simple, but without considering the interaction between each components of sluice and sometimes deviating from the actual situation. The force condition of spatial sluice structure is more complex. It is a more reasonable method to analysis the interaction of the batholith and sluice structure.A sluice on the batholith in Jiangsu Province was taken as the research object in the paper. The ABAQUS finite element software was used to analyze the sluice chamber structure. The main works are as follow:1. The traditional method to calculate the sluice structure was introduced in this paper. The floor, the pier, the breast wall structure were calculated separately. The Winkler Foundation Beam Method was used to analyze sluice floor structure on the batholith. At the same time the finite element method of the sluice structure calculation and the application of ABAQUS software about sluice structure analysis were elaborated.2. By analyzing the influence of the batholith’s depth, the ratio of the batholith’s elastic modulus and bottom plate’s young’s modulus, bottom plate’s thickness and the pier’s thickness on the internal forces of sluice floor, the conclusions was got:(1) The Winkler assumption (ground resisting force coefficient method) is feasible to analysis sluice floor structure; (2) When the ratio (E/Ec) of the batholith elastic modulus and the bottom plate elastic modulus is bigger, the mid span moment value of the bottom plate is smaller and the ground reaction force at the centre of the bottom plate is bigger, but when both elastic modulus have similar values, the change range of the mid-span plate bending moment and the ground reaction force are particularly small; (3) With the increase of the bottom plate’s thickness, the ground reaction force is increased and the mid-span plate bending moment is reduced, but the bending moment value of plate near the pier is on the rise; (4) With the increase of the pier’s thickness, the mid-span plate bending moment is reduced, but the ground reaction force is increased. The change of batholith’s elastic modulus and bottom’s thickness plate have great influence on the internal force of the sluice floor on the batholith.3. Two kinds of sluice chamber structure finite element models about separate type and monolithic type were established. By the contrast analysis of results, the conclusions was got:(1) Subsidence and uneven settlement of monolithic sluice structure are relatively small, but the reduction of monolithic floor’s subsidence is not obvious when compared with separated floor’s subsidence; (2) The horizontal displacement of monolithic floor structure is smaller than the horizontal displacement of the separated floor structure; (3) The maximum principal tensile stress of sluice central pier are basically same. The maximum principal tensile stress of the separated floor is smaller, The maximum principal compressive stress of the separated floor is also smaller. Therefore, choosing separated sluice floor on the batholith is more economic and reasonable.4. Sluice chamber vibration relys mainly on the first to the fourth order vibration under earthquake load. Compared with the seismic action parallel to the flow direction, under the effect of horizontal earthquake load which is transverse to the flow direction, sluice chamber produces the larger horizontal load and bending moment, as the same time causing the larger dynamic displacement and the dynamic stress of exceeding the allowable stress, therefore the horizontal seismic dynamic response results of vertical flow direction should be adopted when the bearing capacity of the sluice chamber structure is rechecked and computed. |
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