Universal hinge structure for spandrel column

Abstract

The universal hinge structure comprises a fork lug, a cross-shaped hole conversion head, a double-lug plate node structure and a steel pipe stand column, the fork lug is connected to the tail end of the steel pipe stand column in a welded mode, and the cross-shaped hole conversion head is connected to the fork lug through a first pin shaft; a second pin shaft is further inserted into a connecting hole in the upper end of the cross-shaped hole adapter, and the double-lug-plate joint structure is connected with the cross-shaped hole adapter through the second pin shaft; end covers are arranged at the two ends of the first pin shaft and the two ends of the second pin shaft, threaded holes are formed in the end covers, the end covers are connected with the first pin shaft and the second pin shaft through bolts respectively, and sealing rings are fixedly connected to the inner side faces of the end covers.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bridge design, more particularly, to a universal hinge structure for arch column. BACKGROUND

[0002] Arch column fixation is a common design in arch bridge structure, but this design also has some shortcomings that cannot be ignored in actual engineering. The main shortcomings are as follows:

[0003] 1. Column fixation may cause uneven distribution of overall stiffness of the arch bridge, thereby causing stress concentration at the fixation position and affecting the durability of the structure. 2. The adaptive deformation capacity is limited, and the fixation design limits the free deformation of the structure under conditions such as temperature change, earthquake action, and uneven settlement of foundation. When a large deformation occurs, a large additional internal force may be generated at the fixation position. 3. The construction complexity is increased, and the fixation construction requires high precision and process control. The connection node of the column and the arch rib and the main beam needs to strictly ensure the stiffness and stability. A slight deviation may affect the overall structural performance. 4. It is difficult to maintain and repair. Since the column and the arch rib and the main beam are fixed to form a whole, once a part is damaged, the column may need to be repaired or replaced, which may require partial or overall reinforcement of the entire structure, increasing the maintenance cost and construction difficulty.

[0004] In order to solve the above problems, the present application provides a universal hinge structure for arch column. SUMMARY

[0005] The purpose of the present application is to provide a universal hinge structure for arch column to solve the problems presented in the background art.

[0006] To solve the above problems, the present application adopts the following technical solutions.

[0007] A universal hinge structure for arch column, comprising a fork ear, a cross hole conversion head, a double ear plate node structure and a steel pipe column, the fork ear is welded to the end of the steel pipe column, and the steel pipe column is a seamless steel pipe; the cross hole conversion head is connected to the fork ear through a first pin shaft; a second pin shaft is also inserted into the upper end connection hole of the cross hole conversion head; the double ear plate node structure is connected to the cross hole conversion head through the second pin shaft; end caps are arranged at both ends of the first pin shaft and the second pin shaft, and threaded holes are arranged on the end caps and connected with the first pin shaft and the second pin shaft through bolts, respectively; and sealing rings are fixedly connected to the inner sides of the end caps.

[0008] Preferably, the double-ear plate node structure comprises ear plates and joint plates which are parallel to each other, the ear plates are welded with the connecting plates near the connecting holes, and the ear plates and the connecting plates are bored after being welded; the first intermediate stiffening plates are welded between the two ear plates, and the second intermediate stiffening plates are welded between the two joint plates; the side stiffening plates are welded on the outer side walls of the joint plates; the ear plates, the joint plates, the first intermediate stiffening plates, the second intermediate stiffening plates and the splicing plates are all provided with a plurality of riveting holes; the ear plates and the joint plates are connected through the splicing plates, the riveting holes and the ring groove rivets; the first intermediate stiffening plates and the second intermediate stiffening plates are also connected through the splicing plates, the riveting holes and the ring groove rivets.

[0009] Preferably, the joint plates, the second intermediate stiffening plates and the side stiffening plates are welded with the steel main beam bottom plates or the steel arch wall plates of the bridge structure away from the ear plates, and the joint plates, the second intermediate stiffening plates and the side stiffening plates and the steel main beam bottom plates or the steel arch wall plates of the bridge structure are assembled and welded in the factory.

[0010] Preferably, the inner and outer sides of the ear plates and the joint plates and the two sides of the first intermediate stiffening plates and the second intermediate stiffening plates are all connected with the splicing plates.

[0011] Preferably, the fitting surfaces between the ear plates, the joint plates and the splicing plates are milled flat through machining, so as to ensure that the connecting surfaces between the ear plates and the splicing plates and the joint plates and the splicing plates are closely fitted.

[0012] Preferably, gaps are left between the ear plates and the joint plates, and gaps are left between the first stiffening plates and the second stiffening plates; the width of the gaps is adjusted according to the installation error of the construction site; the riveting holes on one side of the ear plates and the first intermediate stiffening plates on the splicing plates are accurately drilled according to the actual installation position on site.

[0013] Preferably, the fork ears are made of ZG20Mn castings, the surfaces of which are treated by electroplating zinc process, and the fork ears are subjected to anticorrosion coating after electroplating; the pin holes of the fork ears are subjected to oil coating.

[0014] Preferably, the cross hole conversion head and the pin shaft are made of 40Cr forgings, which are subjected to quenching and tempering treatment after being made, and the outer surfaces of which are subjected to overall wear-resistant chromium plating treatment; the pin holes of the cross hole conversion head are subjected to oil coating.

[0015] Preferably, the outer periphery of the end cover is sealed by a vulcanized rubber sealant.

[0016] Compared with the prior art, the advantages of the present application are that:

[0017] The present application provides a universal hinge structure for the arch column, the connection mode of the universal hinge only restricts three-way displacement and rotation around the column axis, can release the additional bending moment in the arch rib surface and out of the surface, thereby reducing the bending moment stress concentration at the connection, reducing the construction cost; the connection mode can better adapt to deformation, avoids generating excessive additional internal force under the conditions of temperature change, uneven foundation settlement and the like; moreover, the "flexible" characteristics of the hinge node can absorb and dissipate part of the seismic energy, reduces the damage of the earthquake action on the structure, thereby improving the seismic performance; in addition, compared with the fixed connection, the construction difficulty is also reduced. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A three-dimensional schematic view of a universal hinge structure for the arch column is provided in the present application;

[0019] Figure 2 A double lug plate node structure three-dimensional schematic view of a universal hinge structure for the arch column is provided in the present application;

[0020] Figure 3 A fork lug three-dimensional schematic view of a universal hinge structure for the arch column is provided in the present application;

[0021] Figure 4 A cross hole conversion head three-dimensional schematic view of a universal hinge structure for the arch column is provided in the present application;

[0022] Figure 5 An elevation view of a universal hinge structure for the arch column is provided in the present application;

[0023] Figure 6 An A-A sectional view of a universal hinge structure for the arch column is provided in the present application;

[0024] Figure 7 An A large sample view of a universal hinge structure for the arch column is provided in the present application;

[0025] Figure 8 A fork lug elevation view of a universal hinge structure for the arch column is provided in the present application;

[0026] Figure 9 A fork lug plan view of a universal hinge structure for the arch column is provided in the present application;

[0027] Figure 10 A cross hole conversion head elevation view of a universal hinge structure for the arch column is provided in the present application;

[0028] Figure 11 A cross hole conversion head plan view of a universal hinge structure for the arch column is provided in the present application;

[0029] Figure 12 An end cover elevation view of a universal hinge structure for an arch column;

[0030] Figure 13 An end cover plan view of a universal hinge structure for an arch column.

[0031] Explanation of reference numerals in the drawings:

[0032] 1, steel girder bottom plate or steel arch wall plate; 2, fork lug; 3, cross hole conversion head; 4-1, first pin shaft; 4-2, second pin shaft; 5, double lug plate node structure; 5-1, lug plate; 5-2, joint plate; 5-3, pasting plate; 5-4, first intermediate stiffening plate; 5-5, second intermediate stiffening plate; 5-6, side stiffening plate; 5-7, splicing plate; 5-8, ring groove rivet; 6, steel pipe column; 7, end cover; 8, bolt; 9, sealing ring. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0034] Embodiment 1:

[0035] The present application proposes a universal hinge structure for an arch column, which mainly comprises a fork lug 2, a cross hole conversion head 3, a first pin shaft 4-1, a second pin shaft 4-2, a double lug plate node structure 5, an end cover 7, a bolt 8 and a sealing ring 9, as shown in Figure 1 , 3 ~6 and 8~13.

[0036] The double lug plate node structure 5 in the embodiment comprises a lug plate 5-1, a joint plate 5-2, a pasting plate 5-3, a first intermediate stiffening plate 5-4, a second intermediate stiffening plate 5-5, a side stiffening plate 5-6, a splicing plate 5-7 and a ring groove rivet 5-8, as shown in Figure 2 .

[0037] The lug plate 5-1, the joint plate 5-2, the pasting plate 5-3, the first intermediate stiffening plate 5-4, the second intermediate stiffening plate 5-5, the side stiffening plate 5-6 and the splicing plate 5-7 in the embodiment are all made of Q345qD material. The plate thickness of the lug plate 5-1 and the joint plate 5-2 is 30 mm, and the plate thickness of the pasting plate 5-3, the intermediate upper stiffening plate and the intermediate lower stiffening plate is 24 mm. The ring groove rivet 5-8 is made of 10.9 grade carbon steel, the model is MTD-T30, and the reserved ring groove rivet hole diameter is 33 mm.

[0038] The joint plate 5-2, the second intermediate stiffening plate 5-5 and the steel girder bottom plate or the steel arch wall plate 1 in the embodiment are uniformly assembled and welded in a factory. The steel girder bottom plate and the steel arch wall plate 1 welded with the universal hinge structure are locally thickened in a range different from other conventional segments. A transverse partition plate is additionally arranged at a position corresponding to the second intermediate stiffening plate 5-5 inside the main girder and the main arch, and a local force transmission plate is additionally arranged at a position corresponding to the joint plate 5-2.

[0039] The joint plate 5-2, the lug plate 5-1, the second intermediate stiffening plate 5-5 and the first intermediate stiffening plate 5-4 in the embodiment are connected into an integral whole through the splice plate 5-7 and the ring groove rivet 5-8. A certain gap is left between the joint plate 5-2, the lug plate 5-1, the second intermediate stiffening plate 5-5 and the first intermediate stiffening plate 5-4. The gap is conducive to adjusting the actual installation error on site during construction. The rivet hole on one side of the splice plate 5-7 needs to be accurately drilled on site according to the actual installation position.

[0040] The fitting surface between the lug plate 5-1, the joint plate 5-2 and the splice plate 5-7 described in the embodiment should be milled to ensure that the ring groove rivet connecting surfaces between the lug plate 5-1 and the splice plate 5-7 and between the joint plate 5-2 and the splice plate 5-7 can be closely fitted.

[0041] The second intermediate stiffening plate 5-5 and the joint plate 5-2 described in the embodiment are welded and connected. The first intermediate stiffening plate 5-4 and the lug plate 5-1 are welded and connected. The side stiffening plate 5-6 and the joint plate 5-2, the steel girder bottom plate or the steel arch wall plate 1 are welded and connected. After the lug plate 5-1 and the patch plate 5-3 are welded, they are uniformly bored.

[0042] The fork lug 2 in the embodiment adopts ZG20Mn castings, the cross hole conversion head 3 and the pin shaft 4 adopt 40Cr forgings, and the end cover 7 adopts Q355C material. The steel pipe column 6 is welded from a seamless steel pipe, the model is Φ813x24mm, and the material is low alloy steel Q420E. The bolt model is M10x30mm, and the sealing ring model is Φ272x7mm.

[0043] The welding of the fork lug 2 and the steel pipe column 6 in the embodiment should adopt mechanical automatic or semi-automatic welding. After the welding of the fork lug 2 and the steel pipe column 6 is completed, the fork lug 2 can be finished.

[0044] The fork 2 described in the embodiment is a casting, after sand cleaning, the casting should be annealed as a whole, eliminate casting stress, and carry out normal tempering treatment. The fork 2 adopts zinc electroplating process, the thickness of the zinc plating layer is not less than 25 μm, the requirement should meet the relevant requirements of “Metallic Coatings of Zinc on Iron and Steel” GB / T9799-1997, after zinc electroplating process, carry out corrosion protection coating, the composite coating corrosion protection system is: inorganic zinc-rich primer 2x40 μm, epoxy sealing paint 1x25 μm, epoxy cloud iron intermediate paint 2x40 μm, acrylic polysiloxane topcoat 2x70 μm. The pin hole of the fork 2 requires oiling treatment.

[0045] The cross hole conversion head 3 and the pin shaft 4 blank described in the embodiment need to be quenched and tempered. The outer surface of the cross hole conversion head 3 and the pin shaft 4 adopts overall wear-resistant chromium plating treatment, the thickness of the plating layer is 30 μm, the requirement should meet the relevant requirements of “Metallic Coatings of Chromium for Engineering Purposes” GB / T11379-2008, the pin hole of the cross hole conversion head 3 requires oiling treatment.

[0046] The end cover 7 described in the embodiment adopts composite coating corrosion protection system: inorganic zinc-rich primer 2x40 μm, epoxy sealing paint 1x25 μm, epoxy cloud iron intermediate paint 2x40 μm, acrylic polysiloxane topcoat 2x70 μm. The outer periphery of the end cover 7 adopts vulcanized rubber sealant for sealing, preventing water and gas penetration. As shown in Figure 7 .

[0047] The above is only the preferred specific embodiment of the present application; however, the protection scope of the present application is not limited to this; any skilled person in the art, according to the technical range disclosed in the present application, should be covered in the protection scope of the present application, according to the technical solution and the improved concept of the present application, equivalent replacement or change.

Claims

1. A universal hinge structure for an arch support column, characterized in that, The device includes a fork lug (2), a cross-hole adapter (3), a double-ear plate node structure (5), and a steel pipe column (6). The fork lug (2) is welded to the end of the steel pipe column (6), which is made of seamless steel pipe. The cross-hole adapter (3) is connected to the fork lug (2) via a first pin (4-1). A second pin (4-2) is also inserted into the upper connecting hole of the cross-hole adapter (3). The double-ear plate node structure (5) is connected to the cross-hole adapter (3) via the second pin (4-2). End caps (7) are provided at both ends of the first pin (4-1) and the second pin (4-2). The end caps (7) are provided with threaded holes and are connected to the first pin (4-1) and the second pin (4-2) respectively via bolts (8). A sealing ring (9) is fixedly connected to the inner side of the end caps (7).

2. The universal hinge structure for an arch support column according to claim 1, characterized in that, The double-ear plate node structure (5) includes parallel ear plates (5-1) and joint plates (5-2). A mounting plate (5-3) is welded to the ear plate (5-1) near the connecting hole. After welding, the ear plates (5-1) and mounting plates (5-3) are uniformly bored. A first intermediate stiffening plate (5-4) is welded between the two ear plates (5-1), and a second intermediate stiffening plate (5-5) is welded between the two joint plates (5-2). A side stiffening plate is welded to the outer wall of the joint plate (5-2). 5-6); The ear plate (5-1), the joint plate (5-2), the first intermediate stiffening plate (5-4), the second intermediate stiffening plate (5-5), and the splicing plate (5-7) are all provided with a number of riveting holes; The ear plate (5-1) and the joint plate (5-2) are connected by the splicing plate (5-7), the riveting holes, and the annular groove rivet (5-8); The first intermediate stiffening plate (5-4) and the second intermediate stiffening plate (5-5) are also connected by the splicing plate (5-7), the riveting holes, and the annular groove rivet (5-8).

3. A universal hinge structure for an arch support column according to claim 2, characterized in that, The joint plate (5-2), the second intermediate stiffening plate (5-5), and the side stiffening plate (5-6) are welded to the bottom plate of the steel main beam or the steel arch wall plate (1) of the bridge structure on the side away from the ear plate (5-1). The joint plate (5-2), the second intermediate stiffening plate (5-5), and the side stiffening plate (5-6) are assembled and welded to the bottom plate of the steel main beam or the steel arch wall plate (1) of the bridge structure in the factory.

4. A universal hinge structure for an arch support column according to claim 3, characterized in that, The ear plate (5-1) and the inner and outer sides of the connector plate (5-2), as well as the two sides of the first intermediate stiffening plate (5-4) and the second intermediate stiffening plate (5-5), are all connected to splicing plates (5-7).

5. A universal hinge structure for an arch support column according to claim 4, characterized in that, The mating surfaces of the ear plate (5-1), the connector plate (5-2), and the splicing plate (5-7) are milled flat by machining to ensure that the connecting surfaces of the ear plate (5-1) and the splicing plate (5-7), and the connector plate (5-2) and the splicing plate (5-7) are tightly fitted.

6. A universal hinge structure for an arch support column according to claim 5, characterized in that, A gap is left between the ear plate (5-1) and the joint plate (5-2); a gap is left between the first stiffening plate (5-4) and the second stiffening plate (5-5); the width of the gap is adjusted according to the installation error at the construction site; the riveting holes on one side of the ear plate (5-1) and the first intermediate stiffening plate (5-4) on the splicing plate (5-7) are drilled according to the actual installation position on site.

7. A universal hinge structure for an arch support column according to claim 6, characterized in that, The fork lug (2) is made of ZG20Mn casting, and its surface is treated with electro-zinc plating and coated with anti-corrosion coating after electroplating; the pin hole of the fork lug (2) is treated with oil.

8. A universal hinge structure for an arch support column according to claim 7, characterized in that, The cross-hole converter (3) and pin (4) are made of 40Cr forgings. After they are made, the blanks need to be heat-treated and the outer surfaces are plated with wear-resistant chromium. The pin holes of the cross-hole converter (3) are treated with oil.

9. A universal hinge structure for an arch support column according to claim 8, characterized in that, The outer periphery of the end cap (7) is sealed with a vulcanized rubber sealant.

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