Single-tower single-cable-plane cable-stayed bridge tower anchoring area circumferential prestressing tendon configuration and optimization method

Abstract

The invention discloses a single-tower single-cable-plane cable-stayed bridge tower anchoring area circumferential prestressing tendon configuration and optimization method. According to the method provided by the invention, an optimization model is established by taking the tensile stress of the dangerous area of the bridge tower anchoring area as an optimization target and taking the tension coefficient of the circumferential prestressing tendon as an optimization variable, and the optimization model is solved by utilizing an intelligent algorithm, so that the stress condition of the anchoring area is improved, and the configuration of the circumferential prestressing tendon is more economical and reasonable. An intelligent algorithm adopted in the invention combines and improves a genetic algorithm and a bee colony algorithm, the problem that the genetic algorithm is easy to converge to a local optimal solution too early is improved, and the global search capability of the algorithm is improved; optimization indexes adopted in the method can also be adjusted according to actual engineering requirements, and the configuration optimization target of the circumferential prestressing tendons in the bridge tower anchoring area is better achieved.

Description

technical field [0001] The invention belongs to the technical field of bridge engineering, and in particular relates to a method for arranging and optimizing circumferential prestressed beams in the anchorage area of ​​a single-tower single-cable-plane cable-stayed bridge. Background technique [0002] As a common structural form of medium and long-span bridges, cable-stayed bridges carry the full bridge load through the combined structure of bridge towers, main girders and cables. The design and construction of the force-transmitting and force-bearing components are important guarantees for the safety and durability of the bridge. . The anchorage area of ​​the bridge tower is the core part of the force, and the local concentrated force generated by the cables is transmitted to the tower column through this part. In order to control the deformation of the anchorage area and resist the force of the cables, the ring prestressed tendon structure is often used to strengthen the ...

AI Technical Summary

Problems solved by technology

The method of the present invention combines the genetic algorithm with the bee colony algorithm, improves the problem that the genetic algorithm tends to converge to the local optimal solution prematurely, and improves the efficiency of the configuration optimization of the annular prestressed beam in the anchorage area

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