Construction Method of Tensioning and Adjusting Cable of Cable Bridge
A construction method and tensioning technology, which is applied in bridges, bridge parts, bridge construction, etc., can solve the problems of complex and cumbersome cable tensioning and adjusting techniques, long construction period, etc., and achieve safe and reliable construction status, correct deviations, and simplify calculations The effect of the iterative process
Active Publication Date: 2017-03-15
HUNAN LIANZHI BRIDGE & TUNNEL TECH +1
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Problems solved by technology
[0005] The purpose of the present invention is to provide a construction method for tensioning and adjusting cables of cable bridge slings, so as to solve the technical problems of complex sling tensioning and cable adjustment processes, long construction period and construction quality
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[0024] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in various ways defined and covered by the claims.
[0025] see figure 1 , the invention discloses a construction method for tensioning and adjusting cables of a cable-type bridge, which mainly includes the following steps:
[0026] (1) After the installation of the auxiliary arch of the bridge and the sling of the auxiliary arch are completed, an intelligent tension jack is installed at the tension end of each sling of the auxiliary arch, and all the intelligent tension jacks are wired to the computer control platform;
[0027] (2) Through the control of the computer control platform, pre-tighten all the suspenders of the auxiliary arch at the same time;
[0028] The preload is about 20KN. It is not recommended to assign the preload in detail here, because the preload is different according to different b...
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The invention provides a tensioning and adjusting construction method for slings of a sling-type bridge. The tensioning and adjusting construction method includes mounting an intelligent tensioning jack at the tensioning end of each sling of the sling-type bridge, and connecting the intelligent tensioning jacks with a computer control platform in a wired mode; performing pre-tightening and overall synchronous staged tensioning on all the slings through operation of the computer control platform; when sling forces fed back by the intelligent tensioning jacks to the computer control platform reach 90-96% of a staged calculation target value, sequentially performing asynchronous tensioning and adjusting on all the slings to enable all the sling forces to reach a calculation target value of the stage; after completion of second-phase construction, adjusting the sling forces of all the slings integrally to enable the final sling force to reach a designed target value. The tensioning and adjusting construction method has the advantages that all the slings of the bridge can be tensioned 'synchronously' or 'asynchronously', sling construction procedures and processes are simplified, construction quality and reliability are improved, construction period is shortened by about more than 70%, and construction cost is saved by about more than 30%.
Description
technical field [0001] The invention relates to the technical field of cable bridges, in particular to a construction method for tensioning and adjusting cables of cable bridges. Background technique [0002] Cable bridge (tied arch bridge, cable-stayed bridge, suspension bridge, etc.) sling (rod) tensioning and cable adjustment construction is a key process in bridge construction, which mainly includes sling (rod) tensioning and The cable force adjusts the two parts. At present, the tensioning and adjustment of the sling (rod) is basically carried out by manual operation of traditional jacks, and complex iterative calculations for cable adjustment are also required. This makes the stretching and adjusting construction period of the cable bridge sling (rod) in the actual engineering construction longer, the process is complicated, and the calculation task is heavy. It is often necessary to manually load and unload the jack repeatedly, and multiple stretching and adjustments...
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IPC IPC(8): E01D21/00E01D19/16
Inventor 梁晓东谢鸿杨文选胡红波肖泽林刘高项超群易诞
Owner HUNAN LIANZHI BRIDGE & TUNNEL TECH