Abstract
In view of the demand of super long span pedestrian landscape bridge with curved deck, this paper proposes a kind of cable-stayed and flying-brid arch bridge with Lissajous curved arch rib and double curved bridge deck. Its plane positive projection is Lissajous curve figure, the side elevation of the arch rib is the shape of the cable-stayed and flying-brid arch, and the arch foot cable and the upper space cable between the arch ribs are installed on the Lissajous spatial curved arch rib with concrete-filled steel tube to form a self balanced structure system, which floats and drags across the river. The main arch sling and the tail cable are installed, the double curved bridge deck and the central circular sightseeing platform are suspended, and multiple groups of spatial cables work well together to complement each other, with having complementary advantages. Combined with the actual project, the parameter design is carried out, the Midas finite element model is established, the internal force of the structure is calculated, the structural dynamic mode and stability analysis are carried out, the rationality of its structural performance is verified by analysis and research.
Highlights
With the development of the times, the spans of pedestrian landscape bridges are getting larger and larger
In this paper, combined with a pedestrian landscape bridge in an ecological river, the geometric configuration research of the flying-swallow type cable-stayed arch bridge based on Lissajous's curved arch ribs is carried out, engineering parameter design is carried out, and the Midas finite element model is established for internal force analysis, modal analysis and stability analysis research to verify the rationality of its structure
Based on the engineering background of a pedestrian landscape bridge with a main span of 110 meters, this paper conducts a research on the geometric configuration of a Lissajous curved flying swallow arch bridge with a double-span curve deck, establishes a Midas finite element model, and conducts the internal force analysis, dynamic mode and structural stability analysis under vertical load have drawn the following conclusions: (1) According to the smooth and beautiful Lissajous figure, the steel pipe is bent into Lissajous curve-shaped flying swallow arch ribs by the pyrotechnic simmering process
Summary
With the development of the times, the spans of pedestrian landscape bridges are getting larger and larger. The flying swallow arch bridge is the mainstay, and the cable-stayed structure is auxiliary It is the product of the brave exploration of bridge design and construction technology. The cable-stayed flying-swallow arch has a novel structure and beautiful appearance, showing the characteristics of the flying swallow arch bridge and the cable-stayed bridge [8-10], the two bridge types work together and have complementary advantages. In this paper, combined with a pedestrian landscape bridge in an ecological river, the geometric configuration research of the flying-swallow type cable-stayed arch bridge based on Lissajous's curved arch ribs is carried out, engineering parameter design is carried out, and the Midas finite element model is established for internal force analysis, modal analysis and stability analysis research to verify the rationality of its structure
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