Straddle-type temporary cable self-balancing push-type cable change underpinning apparatus for suspension bridge cables

A temporary cable and straddle technology, applied in bridges, bridge parts, bridge maintenance, etc., can solve the problems of the existing bridge structure, the complex construction process, the high construction cost, and the light temporary cable clamp and material cost. Low, short duration effect
CN109487709APending Publication Date: 2019-03-19HOHAI UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
HOHAI UNIV
Publication Date
2019-03-19

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Abstract

The invention discloses a straddle-type temporary cable self-balancing push-type cable change underpinning apparatus for suspension bridge cables and belongs to the technical field of maintenance andreinforcement engineering of civil engineering suspension bridges. The straddle-type temporary cable self-balancing push-type cable change underpinning apparatus for suspension bridge cables comprisesa main cable that is inclined; steel box girder (13) is arranged blow the main cable; lugs are arranged on the upper surface of the steel box girder (13); the main cable is provided with a pluralityof permanent cable clamps; the top end of a permanent cable is connected with each permanent cable clamp; the bottom end of each permanent cable is connected with one lug; each lug is provided with apinhole. The straddle-type temporary cable self-balancing push-type cable change underpinning apparatus for suspension bridge cables helps solve the problem that cables are difficult to change when each cable lug of a suspension bridge has only one hanging hole, the fact that multiple-point lifting is carried out change one cable is avoided, aerial operation quantity is low, construction is simple, and the line shape and internal force of existing suspension bridge main cables and stiffening beams are less perturbed.
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Description

technical field

[0001] The invention relates to a one-side straddle type temporary cable self-balancing push type suspension bridge suspension cable replacement underpinning device, which belongs to the technical field of civil engineering suspension bridge maintenance and reinforcement engineering. Background technique

[0002] Suspension bridge suspension cables are one of the most easily damaged and most critical stress-bearing components in suspension bridge components. The design service life is only 20 years, while the design service life of suspension bridges is generally more than 100 years. The cable needs to be replaced at least 4-6 times.

[0003] Compared with the installation of slings during bridge construction, there are no anchor roads and hoisting equipment available for the replacement of suspension bridges during service. There are problems such as uninterrupted traffic, high-altitude operations, and narrow construction surfaces, and there are problems suc...

Claims

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