The superstructure of the prefabricated uncapped beam-type composite steel plate girder bridge and its assembling construction method

A steel plate and cover girder technology, applied in bridges, bridge parts, bridge construction, etc., can solve the problems of bad urban landscape effects, heavy weight of small box girders and T girders, and high requirements for construction equipment, so as to optimize bridge landscape and reduce Complexity and on-site operation difficulty, effect of reducing hoisting weight

CN106638259BActive Publication Date: 2018-05-25SHANGHAI URBAN CONSTR DESIGN RES INST GRP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2018-05-25

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Abstract

The invention discloses an upper structure of a prefabricated cover-beam-free type combined steel plate bridge and an assembling construction method of the upper structure. The upper structure comprises a plurality of paths of combined steel plate longitudinal beams and supporting point concrete transverse beams; the plurality of paths of combined steel plate longitudinal beams are assembled along the transverse direction of the bridge to form a bridge-spanning main beam; and one path of the supporting point concrete transverse beam is arranged at each of two ends of each bridge-spanning main beam. According to the upper structure disclosed by the invention, the quantity of components in the upper structure of the bridge can be reduced and the weight of the components is reduced; the hoisting difficulty of field construction is reduced and the construction cost of buildings is saved; and a cover beam is not arranged, so that the defects in the prior art that the clearance under the bridge is low, the traffic limit under the bridge is great and the bridge landscape is poor are improved.
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Description

technical field

[0001] The invention relates to the technical field of bridge construction, in particular to a superstructure of a prefabricated uncovered girder type composite steel plate girder bridge and an assembly construction method thereof. Background technique

[0002] Traditional prefabricated bridges usually adopt the form of "small box girder (or T beam) + cover beam + double columns". This structure has the following defects: 1) The vertical clear height of the cover beam is about 1m~2.5m, occupying The clear space for traffic will greatly restrict the traffic under the bridge, and also have a negative impact on the urban landscape effect, and the setting of the cover beam will also increase the construction cost; 2) The weight of the small box girder and T girder is large, In the construction site, it is usually necessary to use double cranes to lift and install, which is difficult to construct and requires high construction equipment. Contents of the inventio...

Examples

Embodiment 1

[0041] Such as Figure 6 As shown, the superstructure 7 of the prefabricated uncapped girder type composite steel plate girder bridge of the present invention includes multiple composite steel plate longitudinal girders 1 and fulcrum concrete beams 2, and the multiple composite steel plate longitudinal girders 1 are combined to form the bridge main girder along the horizontal direction of the bridge. The two ends of the main girder of the bridge are respectively provided with a fulcrum concrete beam 2 . Such as Figure 4 As shown, the fulcrum concrete beams 2 at both ends of the main girder of each span bridge are supported on the support 3 at the top of the pier column of the lower structure of the bridge.

[0042] Such as figure 1 , 4 As shown, each composite steel plate longitudinal girder 1 includes a prefabricated concrete bridge deck 11 and an I-shaped steel girder 12, and the I-shaped steel girder 12 includes a top plate 121, a bottom plate 123 and a web 122, and the...

Embodiment 2

[0051] The assembling construction method of embodiment 1 product

[0052] Include the following steps:

[0053] A. The central combined steel plate longitudinal beam and cross beam section combination, the middle combined steel plate longitudinal beam and cross beam section combination and the side combined steel plate longitudinal beam and cross beam section combination are respectively hoisted and positioned on the completed bridge substructure, specifically The hoisting positioning sequence is as follows: Figure 8 As shown: firstly, a steel spacer 61 is set on the tie beam 6 of the lower structure of the bridge, and the joint body of the central composite steel plate longitudinal beam beam section is hoisted above the central position of the tie beam, and the central beam section at both ends of the central composite steel plate longitudinal beam The segments are respectively positioned and fixed on the steel pads at the central positions of the two tie beams, and epoxy ...