The construction of bridges under the extreme distance constraints of high-voltage transmission lines significantly increases construction difficulty and safety risks.Traditional hanging baskets have higher construction heights,necessitating urgent improvements and optimizations under such conditions.In cantilever bridge construction,the height restrictions of high-voltage transmission lines often challenge the use of traditional diamond-shaped hanging baskets.This study focuses on the construction of the Xinguang Expressway Node Overpass,which adopts a variable cross-section prestressed concrete continuous box girder.The minimum distance from the bottom of the high-voltage line to the bridge deck is approximately 10.5 meters,while the traditional hanging basket construction does not provide sufficient safety clearance.To solve this problem,this study designed a new type of hanging basket by adopting a reverse suspension beam structure,which allows the front upper beam to be installed in reverse suspension,thereby reducing the overall height by 1.5 meters.This ensures a vertical safety distance of 5.65 meters between the construction and the high-voltage transmission lines,meeting both safety and construction requirements.The research results indicate that the new hanging basket not only solves the construction difficulties posed by high-voltage line restrictions but also provides a safe and reliable construction solution,significantly enhancing the safety and efficiency of bridge construction in similar environments.
维普
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