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Longitudinal limiting device for half-through and through type arch bridge short suspension arm

A technology of longitudinal limit and short boom, which is applied in the direction of arch bridges, bridges, bridge parts, etc., can solve the problems of cracking of longitudinal beams, large deformation, inconsistent length of booms, etc., and achieve the effect of extending safety, eliminating fatigue damage and

Inactive Publication Date: 2006-11-22
SICHUAN DEPT OF TRANSPORTATION HIGHWAY PLANNING PROSPECTING & DESIGN RES INST
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Problems solved by technology

However, due to the longitudinal rigid connection between the arch rib and the bridge system of this type of suspension rod arch bridge, the horizontal displacement of the arch rib is large, which brings new problems to the force on the pier abutment or the connection of the bridge system at both ends. Larger, such longitudinal beams generally (especially at the junction with the beam) are severely cracked

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  • Longitudinal limiting device for half-through and through type arch bridge short suspension arm
  • Longitudinal limiting device for half-through and through type arch bridge short suspension arm
  • Longitudinal limiting device for half-through and through type arch bridge short suspension arm

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0016] In this description, the "junction beam" refers to the fixed beam installed at the intersection of the bridge system and the arch rib, and the "short suspender beam" refers to one or several beams adjacent to the transition beam. The above-mentioned "short boom" refers to the boom hanging down from the arch ring for hanging the short boom beam. In the accompanying drawings of this specification, only the transition beam 14, the short suspender beams 15, 16 and their short suspenders 11, 12 located in the right half-span of the arch ring 10 are shown, and the structure of the left half-span is symmetrical to it. .

[0017] Referring to Fig. 1 and Fig. 2, the short suspender longitudinal stop device of the middle and bottom arch bridge of the present invention includes at least two connecting rods arranged between the cross beam 14 and the adjacen...

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Abstract

The invention relates to a short hanger rod longitudinal limit device of middle or lower truss arch bridge, which can effectively limit the longitudinal displacement of short hanger rod, eliminate fatigue break-down and stress corrosion, to confirm the safety and prolong the service life of arch bridge. Wherein, it comprises at least two connecting rods between the cross beam (14) and the nearby short hanger rod beam (15), while said connecting rods are transversely distantly arranged along the bridge beam (13); two ends of each connecting rod are hinged with the cross beam (14) and the short hanger rod beam (15).

Description

technical field [0001] The invention relates to a middle-and-under-through arch bridge, in particular to a position-limiting device for limiting the longitudinal displacement of short suspenders of the middle-and-under-through arch bridge. Background technique [0002] On the mid-span and bottom-strut arch bridges, the short suspender near the junction of the arch ring and the bridge girder is far from the zero point of mid-span deformation. The horizontal displacement of the suspender beam along the bridge length direction is large. Due to the large displacement of the beam (that is, the lower end of the boom) at the short boom, the length of the short boom is small, and the relative deformation of the short boom is relatively large, resulting in high stress in the short boom. Under this high stress, short suspenders are prone to fatigue damage and stress corrosion, which poses a great threat to bridge safety. In 2001, part of the deck of the Xiaonanmen Bridge in Yibin, S...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D4/00E01D19/00
Inventor 郑远鹄牟廷敏郑旭峰姚红兵范碧琨蒋劲松陈应忠
Owner SICHUAN DEPT OF TRANSPORTATION HIGHWAY PLANNING PROSPECTING & DESIGN RES INST
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