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Expansion device for extra-large displacement bridge

A telescopic device and displacement technology, used in bridges, bridge parts, bridge construction, etc., can solve the problems of insufficient vehicle load, uneven displacement control, etc., to ensure service life, safe and reliable use, and enhance strength and rigidity. Effect

Active Publication Date: 2014-02-12
CHENGDU XINZHU ROAD & BRIDGE MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0032] The purpose of the present invention is to solve the above-mentioned problems, overcome the shortcomings of the large-displacement modulus telescopic device in the prior art, such as insufficient driving force, uneven displacement control, etc., and provide a super-large displacement modulus road telescopic device, The telescopic device has safe and reliable load bearing, uniform displacement control, high driving safety, and improves the anti-loosening performance of the entire telescopic device structure to ensure its stable structure and safe and reliable use.

Method used

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  • Expansion device for extra-large displacement bridge
  • Expansion device for extra-large displacement bridge
  • Expansion device for extra-large displacement bridge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Embodiment 1, the super-large displacement bridge telescopic device of the present invention, it includes the support system 1 and the section steel assembly 3 that are mutually vertically intersected, and the support system 1 and the section steel assembly 3 are several groups, and the specific number is provided by those skilled in the art According to on-site construction and design selection, the support system 1 is placed on the beams on both sides of the bridge along the direction of the bridge. Control system 4 and anchor system 5. The limit system 2 and the displacement control system 4 are combined to control the displacement of the telescopic device, which acts as a double insurance, so as to ensure safe and reliable use. The anchor system 5 is used to connect the various components together to form an overall bearing force structure to ensure that its bearing capacity meets the requirements, thereby overcoming the deficiencies in the prior art. The section st...

Embodiment 2

[0065] Embodiment 2 is similar to Embodiment 1, the difference is that several groups of support systems 1 are further adopted, and several groups of support systems 1 are all placed on the beams on both sides of the bridge along the direction of the bridge, and any two supports The distance between the systems 1 is 1.0m to 1.6m, and a waterproof sealing strip 3-2 is set between any adjacent two middle beam steels 3-1, so as to ensure good waterproof and dustproof performance and avoid rainwater Into corrosion, to ensure its service life. At present, the middle beam steel of the general telescopic device in China adopts 80x120 cross-section, which meets the requirements according to the design specifications. 1.8m) The service life of the center beam section steel will be greatly shortened compared with the design. In order to ensure the service life of the load-bearing system of the telescopic device and increase the safety system of the product, we have adopted the latest 9...

Embodiment 3

[0066] Embodiment 3 is similar to Embodiment 1 and Embodiment 2, except that the support system 1 further includes a fixed end support box 1-1, a support beam, a support hanger 1-2, and a support beam assembly 1 -3 and the movable end support box 1-7, the fixed end support box 1-1 and the movable end support box 1-7 are respectively fixed on the beam bodies on both sides of the bridge, and the two support boxes are connected by a support beam, and the The support beam assembly is equipped with a support beam assembly 1-3 and a support hanger 1-2, and the support system 1 is fixedly connected with the middle beam section steel 3-1 through the support beam assembly 1-3. In particular, one end of the support beam is fixed in the fixed end support box 1-1, and the other end can relatively move in the movable end support box 1-7 through the spherical support 1-6, and the support beam and the movable end support box A spherical support 1-6 and an elastic support are arranged between...

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Abstract

The invention discloses an expansion device for an extra-large displacement bridge, which belongs to the technical field of highway bridges and comprises supporting systems and steel section components, which are mutually intersected. The supporting systems are transversely erected on two sides of a bridge in the lateral direction of the bridge. Limiting systems are disposed below the steel section components. Displacement control systems and anchorage systems are disposed on the steel section components. Each steel section component comprises a plurality of middle-beam steel sections. Each supporting system comprises a supporting suspension. The middle-beam steel sections are connected with the supporting suspensions through 30-degree wedged locking screw pairs or Tang's bolts. The expansion device is simple in structure, simple and convenient in operation, safe and reliable in use, low in cost, worthy of popularization, safe and reliable in bearing, uniform in displacement control, and high in travelling crane safety.

Description

technical field [0001] The invention relates to the technical field of highway bridges, in particular to a bridge telescopic device with super large displacement. Background technique [0002] Among the existing expansion devices for highway bridges, the large-displacement modulus expansion device has the advantages of strong bearing capacity, anti-slip, good waterproof effect, simple installation, and convenient maintenance, and is widely used in long-span suspension bridges and cable-stayed bridges. There are three types of large displacement modulus telescopic devices: lattice beam type, rotating shaft type and straight beam type. [0003] Among the three structural forms of the large displacement modulus expansion device, the straight beam type expansion device is the better one. The straight beam type large displacement expansion device is composed of four major systems: support system, displacement system, anchoring system, and waterproof system. . [0004] The displ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D19/06
Inventor 夏玉龙邹贻军熊劲松李雄杨柳江明发刘世文林治平
Owner CHENGDU XINZHU ROAD & BRIDGE MASCH CO LTD
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