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Big trussed arch bridge

An arch bridge and arch rib technology is applied in the field of arch bridge systems to achieve the effects of improved dynamic characteristics, high stiffness and simplified construction

Pending Publication Date: 2018-08-07
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to propose a new arch bridge --- large truss arch bridge in view of the outstanding problems existing in the existing arch bridge

Method used

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Embodiment

[0093] The span arrangement of the large truss arch bridge of the present embodiment is all the same as that of the Lupu Bridge (total investment of 2.5 billion yuan). Specifically: a large truss arch bridge, on the basis of the traditional flexible suspension rod arch bridge, 5 pairs of webs are added. That is, it is mainly composed of arch ribs 1, main beams 2, vertical web bars 3, diagonal web bars 4, flexible suspenders 5 and cross braces 6; At 1 / 4, 1 / 2, and 3 / 4 of the vertical web bar 3, the upper end of the vertical web bar 3 is connected with the arch rib 1, and the lower end is connected with the main beam 2; the diagonal web bar 4 is provided with two pairs, one pair The upper end of the diagonal rod is connected with the upper end of the vertical rod arranged at 1 / 4 of the arch rib, and the lower end is connected with the lower end of the vertical rod arranged at 1 / 2 of the arch rib; the other pair of diagonal rods The upper end of the arch rib is connected to the u...

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Abstract

The invention discloses a big trussed arch bridge. The arc bridge is mainly composed of arch ribs, a girder, vertical web members, diagonal web members, flexible suspenders and cross bracings; the vertical web members are respectively arranged near the portions of one quarter, one half and three quarters of the arch ribs; two ends of each diagonal web member are respectively connected with the bottom of a middle vertical web member and the tops of vertical web members of two sides; the arch ribs, the girder, the vertical web members and the diagonal web members form a big trusswork with the flexible suspenders, wherein the arc ribs are taken as top chords, and the girder is taken as a lower chord. The big trussed arch bridge cannot damage the stress characteristics of arc structures, has truss features, and can greatly improve the rigidity, stability and dynamic characteristics of the structures. It is due to the fact that the rise span ratio can be made lower, the rise can be effectively reduced, and the construction difficulty is reduced. The big trussed arch bridge has a better mechanical property, can be applied to the bridges requiring high rigidity and high dynamic performance, and has great engineering application value.

Description

technical field [0001] The invention belongs to an arch bridge system, in particular to a large truss arch bridge. Background technique [0002] As an ancient bridge type, the arch structure system has the longest history and strong competitiveness due to its unique technical advantages such as large spanning capacity, usable local materials, economical cost, low maintenance and repair costs, and beautiful appearance. Ever flourishing, continuous development of the bridge structure system. Even in modern times, the arch bridge is still the main type of bridges that have been built or are under construction in our country. Its variety of forms and wide construction area can be called the most in the world. Therefore, the research on the arch structure system has great practical significance. [0003] The arch is one of the most basic structural forms of the bridge. The arch structure is mainly under compression, and its main load-bearing structure is the arch ring or arch r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D12/00E01D19/00
CPCE01D12/00E01D19/00
Inventor 谢肖礼邓年春邓俨峰欧阳平
Owner GUANGXI UNIV
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