Segmented back-mounted cable-stayed main tower cable conduit structure
A cable-stayed cable main and cable guide technology, which is applied in the direction of cable-stayed bridges, bridge forms, bridge parts, etc., can solve the problems of shortening the service life of the formwork and the obstruction of formwork jacking, so as to speed up the construction progress and reduce the jacking Difficulty, effect of saving stakeout time
Active Publication Date: 2016-02-10
CHINA MAJOR BRIDGE ENERGINEERING
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Problems solved by technology
Repeated opening will inevitably shorten the service life of the formwork
At the same time, because the cable guide is exposed, it also hinders the lifting of the formwork
Method used
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[0010] The present invention consists of a tower inner cable guide 1 pre-buried in the tower wall and a tower outer cable guide 5 installed after the main tower formwork is lifted.
[0011] The pressure-bearing steel plate 2 on the top of the cable guide in the tower is flush with the tooth block 3 inside the tower wall. Outside the main tower, the pre-buried inner cable conduit 1 is flush with the outer side of the tower wall. In order to meet the requirements of bending performance, the outer cable conduit 5 of the tower is provided with stiffening ribs 9 at the connection part.
[0012] refer to figure 1 , 2 , when bolts are used between the tower inner cable guide and the tower outer cable guide, the end of the tower inner cable guide 1 is provided with a connecting plate 4, and the end of the tower outer cable guide 5 is provided with a connecting plate 6, and the connection between the connecting plate 4 and the connecting plate 6 Use high-strength bolts 7 to connect ...
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The invention relates to a segmented later-installation-type stay cable main tower cable guide pipe structure which is formed by an internal tower cable guide pipe pre-buried in a tower wall and an external tower cable guide pipe installed after a main tower formwork is jacked. The bottom of the internal tower cable guide pipe is provided with a connecting plate which is flush with the outer side of the tower wall. A stiffening plate is arranged at the top of the external tower cable guide pipe. If the internal tower cable guide pipe is connected with the external tower cable guide pipe through bolts, the top of the external tower cable guide pipe also needs to be provided with a connecting plate; if the internal tower cable guide pipe is connected with the external tower cable guide pipe through welding, the connecting plate of the external tower cable guide pipe can be cancelled. The internal tower cable guide pipe is not exposed out of the tower wall, holes do not need to be formed in the formwork, and formwork jacking is not impeded; after the formwork is jacked, the external tower cable guide pipe is installed. By the adoption of the segmented later-installation-type stay cable main tower cable guide pipe structure, the holes of the cable guide pipes are not formed in the main tower formwork, the service cycle of the formwork can be prolonged, opening laying-out time is saved, the difficulty of formwork jacking is greatly reduced, and the site operation progress is accelerated.
Description
technical field [0001] The invention relates to a novel segmented rear-mounted main tower cable guide structure. Background technique [0002] In recent decades, with the rapid development of my country's social economy, a large number of highway and railway cable-stayed bridges have been built. The main towers of these cable-stayed bridges basically adopt concrete structures. For the installation and anchoring of the stay cables, it is necessary to pre-embed the cable guides in the wall of the main tower. If the length of the cable guide is longer and protrudes from the outside of the tower wall, it is necessary to open a hole on the main tower formwork so that the cable guide can be exposed. Because the angle and position of the cable conduits are different, the size and position of the template openings are also different. Repeated opening will inevitably shorten the service life of the template. At the same time, because the cable guide is exposed, it also hinders th...
Claims
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IPC IPC(8): E01D19/14E01D11/04
Inventor 刘汉顺张强李伟王志平
Owner CHINA MAJOR BRIDGE ENERGINEERING