Method for dynamic control of nondestructive replacement of tied arch bridge hanger rod

A technology of dynamic control and tie-rod arch bridges, applied in arch bridges, bridges, bridge maintenance, etc., can solve problems such as bridge deck damage, and achieve the effect of less engineering
CN1401854AInactive Publication Date: 2003-03-12TONGJI UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
TONGJI UNIV
Publication Date
2003-03-12
Estimated Expiration
Not applicable · inactive patent

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Abstract

A dynamic control method for nondestructive replacing of the boom of tied arch bridge includes determining the length of new boom and controlling tension, bridge floor reaction and force transfer. A special hanger rod for said control procedure is also disclosed.
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Description

technical field

[0001] The invention belongs to the technical field of bridge engineering, and in particular relates to a dynamic control method for non-damage replacement of suspenders of a tied arch bridge. Background technique

[0002] At present, more than 40,000 tied arch bridges have been built in our country. Due to the limitations of various historical, technical and economic conditions, most of the arch bridges have reached the stage of overhaul. Especially for the suspension rod arch bridge, because the suspension rod is the key component of force transmission, it has local static stability. Once a problem occurs, it will lead to chain damage of the structure, and eventually lead to the failure of most or the entire bridge deck system. The collapse of the Yibin South Gate Bridge, which has already occurred, is an example of this.

[0003] On the other hand, the suspender is a prestressed component, and the accurate establishment of its stress state and the structu...

Claims

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