Optimal Displacement Control Method for Cantilevered Construction of Cable-Stayed Bridges
A control method and technology of cable-stayed bridges, applied in the field of transportation bridge and culvert engineering, can solve the problems of uniform effects, cumbersome work, low efficiency, etc., and achieve the effects of wide application range, ensuring traffic efficiency, and increasing service life
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[0047] A cable-stayed bridge has a total length of 330m, and the bridge span is composed of 2×165m. A cable-stayed bridge is designed as a single-tower cable-stayed bridge with double cable planes. The main girder is a steel box girder with a height of 3.5m and a width of 36m. It is a semi-floating system. , standard strength 1960MPa. There are 136 stay cables in the whole bridge, 17 kinds of specifications; the stay cable area is 4200mm 2 、4340mm 2 、4620mm 2 、5054mm 2 、5600mm 2 、6020mm 2 、6440mm 2 、6860mm 2 、7280mm 2 、7770mm 2 、7980mm 2 、8260mm 2 、8820mm 2 、9240mm 2 、9800mm 2 、10640mm 2 、11340mm 2 、4200mm 2 . This project adopts the above-mentioned optimal displacement cable-stayed bridge cantilever construction control method for optimization analysis. Calculation model see figure 2 Shown; the displacement change curve during the construction process is shown in image 3 Shown; the cable stress change curve during the construction process is shown in ...
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