CN203755130U - Front beam and rear arch stacking device for steel arch bridge - Google Patents

Abstract

The utility model relates to a front beam and rear arch stacking device for a steel arch bridge. The front beam and rear arch stacking device comprises a steel box beam support, a segmented steel box beam, a steel arch rib support and a segmented steel arch rib. The steel box beam support comprises multiple rows of steel tube lattice column piers, a force-bearing cross beam which stretches across and is placed on the tops of all rows of the steel tube lattice column piers and a supporting stand column which is vertically arranged on the force-bearing cross beam. The supporting stand column supports the segmented steel box beam in a matched mode. The steel arch rib support comprises a steel arch rib support body arranged on the steel box beam which is well laid, an arch rib force-bearing plate arranged at the top end of the support body and a supporting locating grille arranged on an arch rib force-bearing platform. The supporting locating grille is composed of multiple supporting plates which are vertically arranged on the arch rib force-bearing platform, wherein the tops of the supporting plates are on the same bevel. The front beam and rear arch stacking device for the steel arch bridge is firm in supporting and convenient to assemble and disassemble, a stress supporting structure can be arranged reasonably, and the construction sequence in the whole construction process is optimized more reasonably.

Description

Lamination device for beam first and then arch of steel arch bridge

technical field

The utility model relates to a construction device for erecting a steel arch beam, in particular to a superimposing device for a steel arch bridge with a beam first and then an arch.

Background technique

With the development of expressways in my country, long-span prestressed concrete cap girders will be widely used in highway bridges. It not only increases the appearance of the bridge, but also greatly improves the ground space under the bridge. It has outstanding advantages in urban areas where the ground space is limited. According to the engineering characteristics of long-span prestressed concrete cap beams, conventional support (φ48*3.5mm steel pipe full support) method is generally used for construction, or bracket (hoop) method is used for formwork construction.

In the construction of single pier (long-span) prestressed concrete cap beam, if the bracket (clamp) method is used for formwork construction, there will be large investment in section steel production, large amount of work, poor versatility of tools (only for one project), and technical difficulties High, narrow installation space, need large-scale equipment to cooperate with the construction and other series of problems. The conventional support (φ48*3.5mm steel pipe support) method is used for construction. The installation and dismantling technology of the support is mature, fast and safe, but the special treatment of the foundation requires a large amount of work, and the construction period is long, which is time-consuming and expensive.

Utility model content

The purpose of the utility model is to solve the above-mentioned existing problems and deficiencies, and provide a steel structure beam-first-arch-back superimposition device which can be erected and installed conveniently, has low capital cost and short construction period.

In order to achieve the above purpose, the technical solutions adopted are:

A beam-first-arch-back superimposition device for a steel arch bridge, comprising a steel box girder bracket, a segmented steel box girder placed on the steel box girder bracket, a steel arch rib bracket and a segmented steel arch rib, the steel box girder bracket It includes multiple rows of steel pipe lattice column piers vertically arranged on the hardened ground, load-bearing beams spanning and placed on the top of each row of steel pipe lattice column piers, and supporting columns vertically arranged on the load-bearing beams. The supporting column is matched with the segmental steel box girder for support; the steel arch rib support includes the steel arch rib support main body arranged on the laid steel box girder, the arch rib load-bearing platform arranged at the top of the support main body, and the set The support positioning grid on the arch rib load-bearing platform, the support positioning grid is a support plate with multiple tops on the same inclined plane vertically arranged on the arch rib load-bearing platform.

The sides of the support columns are welded with oblique supports, and the interval between the two adjacent support columns is 800mm~1500mm.

The steel box girder support and the steel arch rib support are provided with auxiliary ladders.

Adopt above-mentioned technical scheme, the beneficial effect that obtains is:

The utility model has reliable support, convenient assembly and disassembly, can rationally set up the supporting structure, more reasonably optimizes the construction sequence in the whole construction process, facilitates the overall assembly and construction, and at the same time facilitates the disassembly of the formwork support, and can be applied to different steel arch bridges. Set up, strong versatility.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Figure 2 is a structural schematic diagram of the steel arch rib support in a top view.

Fig. 3 is a schematic diagram of the structure of the supporting positioning grid.

Serial numbers in the figure: 1 is the steel pipe lattice column pier, 2 is the load-bearing beam, 3 is the supporting column, 4 is the oblique support, 5 is the segmented steel box girder, 6 is the main body of the steel arch rib support, and 7 is the load bearing of the arch rib Platform, 8 are support positioning grids, and 9 are auxiliary ladders.

Detailed ways

The specific embodiment of the utility model is described in detail below in conjunction with accompanying drawing.

Referring to Fig. 1-Fig. 3, a steel arch bridge beam-first and then-arch superposition device, including steel box girder support, segmental steel box girder 5 placed on the steel box girder support, steel arch rib support and segmental steel arch rib , the steel box girder support includes multiple rows of steel pipe lattice pier 1 vertically arranged on the hardened ground, a load-bearing beam 2 that spans and is placed on the top of each row of steel pipe lattice pier 1, and vertically arranged The support column 3 on the load-bearing beam 2, the support column 3 is matched with the segmental steel box girder 5 to ensure that the segmental steel box girder 5 can be placed and docked smoothly; the steel arch rib support includes setting The steel arch rib support main body 6 on the laid steel box girder 5, the arch rib load-bearing platform 7 arranged at the top of the steel arch rib support main body 6, and the supporting positioning grid 8 arranged on the arch rib load-bearing platform 7, The support positioning grid 8 is a support plate vertically arranged on the multi-channel top on the same slope on the arch rib load-bearing platform 7, and the steel arch rib support main body 6 and the steel pipe lattice pier 1 are all made of Four steel pipe columns and angle irons or channel steels interlaced between the steel pipe columns are formed. The sides of the support columns 3 are welded with oblique supports 4, and the distance between the two adjacent support columns 3 is 800mm~1500mm. An auxiliary ladder (not shown in the figure) is provided on the steel box girder support and the steel arch rib support, and the auxiliary ladder is connected to the steel box girder support or the steel arch rib support through fasteners.

Claims (3)

1. A kind of steel arch bridge first girder rear arch stacking device, comprises steel box girder support, the segmental steel box girder placed on the steel box girder support, steel arch rib support and segmental steel arch rib, it is characterized in that, The steel box girder support includes multiple rows of steel pipe lattice pier vertically arranged on the hardened ground, a load-bearing beam spanning and placed on the top of each row of steel pipe lattice pier, and a load-bearing beam vertically arranged on the load-bearing beam. The supporting column, the supporting column is matched with the segmented steel box girder; the steel arch rib support includes the steel arch rib support main body arranged on the laid steel box girder, the arch rib arranged at the top of the support main body The load-bearing platform, and the support positioning grid arranged on the arch rib load-bearing platform, the described support positioning grid is a support plate with multiple tops on the same slope vertically arranged on the arch rib load-bearing platform. 2. The beam-first-arch-latching device for a steel arch bridge according to claim 1, characterized in that, the side of the support column is welded with oblique supports, and the distance between two adjacent support columns is 800mm~1500mm. 3. The beam-first-arch-latching device for a steel arch bridge according to claim 1, wherein auxiliary ladders are provided on the steel box girder support and the steel arch rib support.