A double-layer steel cable bridge and its erection method
A steel cable bridge and steel cable technology, applied in suspension bridges, bridge construction, erection/assembly of bridges, etc., can solve problems such as limiting the scope of application of flat-stayed cable bridges, unable to arrange the number of main cables, and damage to the main cable deck structure. , to achieve the effect of simple structure, improved rigidity and high safety
Active Publication Date: 2017-03-29
CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD
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Problems solved by technology
Excessive deformation not only affects the stability of driving, but also easily leads to damage to the main cables and bridge deck structure; on the other hand, the main cables of the existing flat-stayed cable The sag of the cables is small, so the number of main cables required is large, and the width of the bridge deck is limited. The scope of application of the cable bridge
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[0035] The technical solution of the present invention is further described below in conjunction with the accompanying drawings, but the scope of protection is not limited to the description.
[0036] Such as Figure 1~6 As shown, the double-layer steel cable bridge of the present invention includes steel cables, and it also includes a main girder 4, an auxiliary girder 5 and a bridge deck 6. The steel cables are arranged in double layers and connected by the main girder 4 and the auxiliary girder 5 . The steel cables include an upper layer steel cable 2 and a lower layer steel cable 3. The main beam 4 includes a cross beam 7 , a main pressure beam 8 , a backing plate 7 , long bolts 10 and a backing layer 11 . The auxiliary beam 5 includes an auxiliary pressure beam 13 , a supporting plate 14 , a splint 12 , long bolts 10 and a cushion 11 . The beam 7 is located between the upper steel cable 2 and the lower steel cable 3 , the main pressure beam 8 is located above the upper...
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The invention discloses a double-deck steel cable bridge and an erection method thereof. The double-deck steel cable bridge comprises a set of upper deck steel cables (2) connected with anchorages (1) arranged on both shores and a set of lower deck steel cables (3). A set of main girders (4) distributed at intervals is arranged between the upper deck steel cables and the lower steel cable. A set of auxiliary girders (5) is arranged between every two main girders (4). Bridge deck slabs (6) are arranged between the main girders (4) and the auxiliary girders (5) or between the auxiliary girders (5). According to the double-deck steel cable bridge, the number of the arranged steel cables can be increased by nearly one time under the condition that the bridge deck width is the same, so that the design of an extra long-span flat cable bridge is made to be possible. Due to the arrangement of the main girders (4), the auxiliary girders (5) and the tension structure, the main girders (4) and the auxiliary girders (5) are firmly fixed to the steel cables, and a spatial structure of the upper deck steel cables and the lower deck steel cables is formed, so that the rigidity of the bridge deck is greatly improved, and the bridge is good in stability, high in safety, simple in structure, convenient to install, and high in recycle rate of the components.
Description
technical field [0001] The invention relates to a double-layer steel cable bridge and an erection method thereof, belonging to the technical field of bridge construction. Background technique [0002] Flat-stayed cable bridges are widely used in engineering because of their low cost, short construction period and convenient construction. The flat-stayed cable bridge is a flexible structure. Since the bridge deck structure is directly laid on the main cable, the bridge deck will deform along with the main cable under load. Excessive deformation not only affects the stability of driving, but also easily leads to damage to the main cables and bridge deck structure; on the other hand, the main cables of the existing flat-stayed cable The sag of the cables is small, so the number of main cables required is large, and the width of the bridge deck is limited. The scope of application of the cable bridge. Contents of the invention [0003] The object of the present invention is...
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IPC IPC(8): E01D11/02E01D21/00
Inventor 谢春生
Owner CHINA POWER CONSRTUCTION GRP GUIYANG SURVEY & DESIGN INST CO LTD