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With the cable-stayed bridge construction technology matures , the span of the structure while constantly increasing structural flexibility is gradually larger , combined with a variety of external factors on the stay cable corrosion , the structure of the life and safety performance engineering fields in recent years are facing a huge challenge for the cable-stayed bridge has been built in the past , the security risk of the destruction of the cable-stayed structure can only be resolved by replacing the cable , so the cable-stayed bridge cable replacement project wide range of topics of concern . Replacement of cables of the cable-stayed bridge is the main method to eliminate the cable-stayed bridge the inherent security risks , but also to improve the structure of linear and internal forces , one of the ways , the cable-stayed bridge cable replacement project should be a reasonable choice objective optimization state , the minimum I can , for example , the method can be minimized by controlling the structure after the cable replacement bending strain as the goal , determine a reasonable optimum cable tension , cable tension control can be calculated through the influence of the matrix method , this paper practical engineering , cable replacement design calculations and analysis of the construction of the cable used flexibly adjust the impact matrix method calculation of cable-stayed bridge for- cable design and analog cable replacement construction , by setting a reasonable goal of optimization , the cable-stayed bridge , Comparative cable replacement works generally adopted in the past full bridge symmetrical cable replacement , proposed alternately replacement cable , cable replacement process internal forces elevation changes made ??to research and analysis , gives two different types of cable replacement condition respective the pros and cons , and combined with a large number of cable-stayed bridge cable replacement instance , the introduction and discussion of works -for- cable monitoring technology , summarized the overall flow of the cable-stayed bridge cable replacement process , and propose solutions to the engineering major and difficult . Shimen Bridge Chongqing for cable engineering examples as control , the other cable technical process of developed reasonably feasible to provide a reference for other similar projects .
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