Design method of simply supported rotating bridge continuous beam bridge continuous section and waterproof seal coat thereof

Abstract

The application discloses a design method of a simply supported rotating bridge deck continuous beam bridge continuous section and waterproof seal layer, and belongs to the field of bridge design. The design method comprises the following steps: S1, calculating a rotating angle of a main beam support point of the bridge deck continuous section based on a simply supported beam structure; S2, calculating a beam end rotating angle of the main beam after the bridge deck continuous section is considered; S3, calculating a displacement of a bridge deck continuous section end rotating angle and a main beam joint at a beam end; S4, calculating a bending moment of the bridge deck continuous section; S5, calculating a crack width of the bridge deck continuous section; and S6, designing the waterproof seal layer. The calculation method can quickly and accurately evaluate the crack width and guide the design of the waterproof seal layer through the analysis of internal forces borne by the bridge deck continuous section. The waterproof seal layer design method is implemented based on the crack width of the bridge deck continuous section, guarantees that the waterproof layer thickness is greater than the maximum tearing height of the waterproof layer of the bridge deck continuous section, ensures the effectiveness of the waterproof layer and the durability of the bridge, further improves the efficiency and safety of the bridge design, and greatly improves the design efficiency and accuracy of the bridge waterproof layer.

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