Bridge provided with rigid hinges

Abstract

The invention discloses a bridge provided with rigid hinges, belonging to the field of bridges. The bridge provided with the rigid hinges disclosed by the invention is characterized in that an amplitude-separation six-tower cable-stayed structure is adopted, the bridge mainly comprises two girders, the two girders are broken at the midspan of the full bridge to form expansion joints, the girders are divided into two parts, each part is a three-tower cable-stayed bridge, the rigid hinges are arranged in the expansion joints so as to connect the two parts of the girders. The bridge disclosed by the invention is provided with the rigid hinges, the structure is simple, the construction difficulty is small, the influence on the water environment is small, and the cost is low; the technical problem of small whole height of a multi-tower cable-stayed bridge is solved, and the problem of deformation of the girders of the bridge along with temperature is scientifically and reasonably solved; longitudinal relative linear displacement of two ends of the girders is released, the corners and the shear displacement of the girders are restrained, the comfort of driving a car is ensured while the stress requirements are met, the service life is long, and the safety and reliability during use is ensured. The construction is simple, the maintenance cost is less and the popularization is easy.

Description

technical field [0001] The invention relates to the technical field of bridges, in particular to a bridge equipped with rigid hinges. Background technique [0002] In my country, the continuous length of the main girder of the bridge is more than 2680m, and it is a cable-stayed bridge with more than six pylons. One of the main difficulties in its structural system is that the overall stiffness of the multi-tower cable-stayed bridge is small. In order to solve the above problems, the main beam adopts a structural system in which vertical supports are set at a distance of 46m on both sides of the cable tower to improve structural rigidity, and X brackets are installed at each cable tower. The second difficulty of the structural system is that the total length of the main girder reaches more than 2680m, and the temperature deformation of the main girder has a great influence on the stress of the cable tower and the foundation. The height of the tower and the size of the sectio...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to: aim at the above existing problems, to provide a bridge with a simple structure, less construction difficulty, less impact on the water environment, and low cost installed with rigid hinges. The technical problem of the overall height of the tensioned bridge is small, which can scientifically and reasonably solve the temperature deformation problem of the main girder of the bridge, release the relative longitudinal displacement of the two ends of the main girder, restrain the rotation angle and shear displacement of the main girder, and meet the requirements of the force and at the same time Ensure driving comfort, long service life, and safe and reliable use

Images