Suspension bridge joint connecting device

Abstract

The utility model discloses a suspension bridge node connecting device which is characterized in that a first connecting steel plate is reserved at the connecting end part of a bridge floor section of a suspension bridge, a second connecting steel plate is reserved on a connecting section connected with the bridge floor section of the suspension bridge, and the first connecting steel plate and the second connecting steel plate are connected through a connecting part; the connecting part comprises two groups of energy dissipation weakening pieces which are symmetrically arranged on the two sides of the first connecting steel plate and the second connecting steel plate, and the upper side and the lower side of each energy dissipation weakening piece are designed to be concave inwards. By arranging the energy dissipation weakening piece and the reinforcing connecting plate, compared with a non-weakening piece connecting section, the weakening piece is smaller in stress dispersion, the stress of the non-weakening piece can exceed the ultimate strength of a part, and damage is serious; due to the fact that the arc shape in the middle of the energy dissipation weakening piece effectively releases the stress transmitted around, the overall stress between the bridge deck section and the fixed section or the corner section and the overall stress between the fixed section and the gallery body structure are stable.

Description

Technical Field

[0001] The utility model relates to the technical field of steel structure buildings, in particular to a suspension bridge node connection device. Background Art

[0002] The three-dimensional corridor in large venues refers to the three-dimensional corridor passage set up in large gymnasiums, theaters, convention and exhibition centers and other buildings. This design can effectively utilize the space and improve the traffic efficiency and viewing experience of the venue. The three-dimensional corridor is generally designed in the form of multi-layer or high-altitude suspension, which can connect different areas of the venue and provide a convenient way of passage for the audience or participants. The design of the three-dimensional corridor needs to consider factors such as structural stability, safety and viewing experience to ensure that it can meet the use requirements of the venue.

[0003] However, there are still some deficiencies in the connection between the bridge deck section and the corresponding corner section and fixed section in the corridor. For example, the patent announcement number of the applicant's early application is CN103967131B, and the patent name is an existing patent technology of an indoor folding-line suspension bridge structure. In the indoor folding-line suspension bridge structure, the bridge deck (equivalent to the bridge deck section) is connected to the floor aisle through a first connecting component, and the first connecting component includes a fixed plate and bolts, that is, the connection between the bridge deck and the floor aisle adopts the combination of a fixed plate and bolts, and no corresponding weakening parts are provided. When the bridge deck is under stress, it will affect the stability between the bridge deck and the floor aisle, and the overall stability and comfort of the suspension bridge structure are difficult to guarantee. Utility Model Content

[0004] The technical problem to be solved by the utility model is: how to solve the problem of insufficient stability of the current spatial suspended corridor bridge deck section.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A suspension bridge node connection device, wherein a first connection steel plate is reserved at a connecting end of a bridge deck section of the suspension bridge, and a second connection steel plate is reserved on a connecting section connected to the bridge deck section of the suspension bridge, wherein the first connection steel plate and the second connection steel plate are connected via a connection component;

[0007] The connecting component includes two groups of energy dissipation and weakening parts symmetrically arranged on both sides of the first connecting steel plate and the second connecting steel plate. The upper and lower sides of the energy dissipation and weakening parts are designed to be concave, and the outer sides of the two groups of energy dissipation and weakening parts are detachably installed with reinforced connecting plates.

[0008] The utility model arranges energy dissipation weakening parts and reinforcement connecting plates between the bridge deck section and the fixed section or the corner section, and between the fixed section and the main structure of the corridor. Compared with a case without a weakening part (a single connecting square steel plate), the stress dispersion to which the connecting section is subjected is smaller. The stress without the weakening part reaches 500MPa, exceeding the ultimate strength of the component itself, causing serious damage; while the stress with the weakening part reaches 375MPa but does not reach the ultimate strength, and the component is stable. This is because the arc in the middle of the energy dissipation weakening part effectively releases the stress transmitted from the surrounding area, so that the bridge deck section and the fixed section or the corner section, and between the fixed section and the main structure of the corridor are subjected to overall stable force.

[0009] As a further solution of the utility model: the energy dissipation and weakening member is designed in an "L"-shaped structure, wherein one side of the "L"-shaped energy dissipation and weakening member is fastened to the connecting section, and the other side is attached to and connected to the second connecting steel plate.

[0010] As a further solution of the utility model: second arc holes are opened at the four corner positions of the energy dissipation and weakening member, and the four second arc holes are detachably connected to the first connecting steel plate and the second connecting steel plate by bolts respectively.

[0011] As a further solution of the utility model: a third arc-shaped hole is horizontally opened in the middle position of the energy dissipation weakening member; a first arc-shaped hole is horizontally opened in the middle position of the reinforcement connecting plate, wherein the first arc-shaped hole corresponds to the corresponding third arc-shaped hole, and the two are fixed by bolts.

[0012] As a further solution of the utility model: the reinforcement connecting plate is a rectangular plate structure.

[0013] As a further solution of the utility model: the end of the bridge deck section facing the connecting section is designed to be concave, the first connecting steel plate is located in the inner groove, and the top of the inner groove can be connected to the cover plate.

[0014] As a further solution of the utility model: the connecting section and the second connecting steel plate form a "T"-shaped structure.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model arranges energy dissipation weakening parts and reinforcement connecting plates between the bridge deck section and the fixed section or the corner section, and between the fixed section and the main structure of the corridor. Compared with a case without a weakening part (a single connecting square steel plate), the stress dispersion to which the connecting section is subjected is smaller. The stress without the weakening part reaches 500MPa, exceeding the ultimate strength of the component itself, causing serious damage; while the stress with the weakening part reaches 375MPa but does not reach the ultimate strength, and the component is stable. This is because the arc in the middle of the energy dissipation weakening part effectively releases the stress transmitted from the surrounding area, so that the bridge deck section and the fixed section or the corner section, and between the fixed section and the main structure of the corridor are subjected to overall stable force. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the node connection component of an embodiment of the utility model;

[0018] Figure 2 It is a partial enlarged view of the node connection component of the embodiment of the utility model;

[0019] Figure 3 It is a partial structural schematic diagram of the node connection component of the embodiment of the utility model;

[0020] Figure 4 This is a Mises stress cloud diagram when no weakening piece is provided at the node connection position of the embodiment of the utility model;

[0021] Figure 5 This is a Mises stress cloud diagram when a weakening piece is set at the node connection position of the embodiment of the utility model;

[0022] Explanation of the reference numerals: 1. bridge deck section; 101. first connecting steel plate; 2. connecting section; 201. second connecting steel plate; 3. connecting component; 301. energy dissipation weakening component; 302. first arc-shaped hole; 303. reinforcement connecting plate; 304. second arc-shaped hole; 305. third arc-shaped hole. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Reference Figure 1A suspension bridge node connection device includes a bridge deck section 1 of the suspension bridge, a connection section 2 and a connection component 3 for connecting the bridge deck section 1 and the connection section 2, wherein the connection section 2 can be a corner platform or a floor main structure plate (or a fixed section) connected to the bridge deck section 1, and the connection between the bridge deck section 1 and the corner platform or the floor main structure plate is achieved through the connection component 3.

[0025] Reference Figure 1 A suspension bridge is generally called a suspended corridor. A suspended corridor includes several fixed sections, several bridge deck sections 1, and several corner platforms. The suspended corridor is placed in the atrium of an indoor venue. Visitors cannot overlook the landscape design in the floor corridor, but they can overlook the landscape through the suspended corridor designed in the atrium. The end of the bridge deck section 1 is used to connect the corner platform or the fixed section, wherein the corner platform and the fixed section are used for corner buffering between two bridge deck sections 1. The fixed section is a reserved section of the main structural plate of the floor. The specific number of bridge deck sections 1 is related to the indoor floor height, the inclination angle of the bridge deck section to the horizontal plane, and the number of floors; each group of bridge deck sections is arranged upwardly, and a ladder for walking upward is arranged above each group of bridge deck sections. The bridge deck section 1 itself will be connected to the top beam of the venue through several hangers. Under the condition of sufficient stability, the present application can improve the stability of the connection between the bridge deck section 1 and the corner platform or the fixed section.

[0026] Reference Figure 1 An inner groove body is provided at the end of the bridge deck segment 1, and a first connecting steel plate 101 is reserved in the inner groove body, wherein the first connecting steel plate 101 and the bridge deck segment 1 are integrally injection molded; and a second connecting steel plate 201 is also reserved at the position where the connecting segment 2 and the bridge deck segment 1 are connected, and the second connecting steel plate 201 and the connecting segment 2 are also integrally molded, and the bottom of the bridge deck segment 1 can be overlapped on the connecting segment 2, and except for the inner groove body at the end of the bridge deck segment 1, the other surfaces of the bridge deck segment 1 and the connecting segment 2 are in contact.

[0027] Reference Figure 2 and Figure 3 The connecting component 3 specifically includes an energy dissipation weakening member 301, a first arc-shaped hole 302, a reinforcement connecting plate 303, a second arc-shaped hole 304 and a third arc-shaped hole 305, wherein two energy dissipation weakening members 301 are provided, and the two energy dissipation weakening members 301 are respectively located on both sides of the first connecting steel plate 101 and the second connecting steel plate 201, and the energy dissipation weakening member 301 is designed in an "L"-shaped structure, wherein one side of the "L"-shaped energy dissipation weakening member 301 is fastened to the connecting section 2, and the other side is affixed and connected to the second connecting steel plate 201 and the first connecting steel plate 101, and the side affixed to the second connecting steel plate 201 and the first connecting steel plate 101 is connected by bolts; each energy dissipation weakening member 301 is also connected to a reinforcement connecting plate 303 by bolts.

[0028] Reference Figure 2and Figure 3 Four first arc holes 302 are opened on the energy dissipation weakening members 301 on the front and rear sides. The two first arc holes 302 on the left side are connected to the second connecting steel plate 201 by fastening bolts, and the two first arc holes 302 on the right side are connected to the first connecting steel plate 101 by fastening bolts (the left and right directions here are in the order of Figure 2 (refer to the figure), the first arc-shaped hole 302 here rather than a round hole is intended to provide a certain buffering effect when the bolt is subjected to force, thereby achieving the effect of unloading energy and ensuring the safety and stability of the bridge deck section.

[0029] Reference Figure 2 and Figure 3 In the middle of the energy dissipation weakening member 301 and on both the upper and lower sides, an arc-shaped concave structure is set. The design here can reduce energy transfer. This component is demonstrated by ABAQUS software; and a third arc hole 305 is also horizontally opened in the middle position of the energy dissipation weakening member 301. A reinforcement connecting plate 303 is set outside the third arc hole 305. A second arc hole 304 is also opened at the corresponding position on the reinforcement connecting plate 303. The second arc hole 304 corresponds to the third arc hole 305. The two are reinforced by bolts. After the installation is completed, a cover plate can be installed on the top to cover the gap at the connection, which is convenient for subsequent mechanical maintenance; the design purpose of the waist groove and the arc groove here is also to have a certain buffering effect on the bolt during the force process, which has achieved the effect of unloading energy and ensuring the safety and stability of the bridge deck section.

[0030] Next, we use ABAQUS to demonstrate the effectiveness of the above node connection components, and compare the energy dissipation effect of the square plate with that of the energy dissipation weakening member 117 designed by us to demonstrate the effectiveness of the components. The Mises stress cloud diagram obtained by ABAUQS analysis shows that (refer to Figure 4 and Figure 5 ), the weakened parts of this design are subjected to less stress dispersion than those without weakened parts (single connected square steel plate). The stress without weakened parts reaches 500MPa, exceeding the ultimate strength of the component itself, causing serious damage; while the stress with weakened parts reaches 375MPa but does not reach the ultimate strength, and the component is stable. This is because the arc in the middle effectively releases the stress transmitted from the surrounding area, making the overall component stable under stress.

[0031] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A suspension bridge node connection device, characterized in that: A first connecting steel plate (101) is reserved at a connecting end of a bridge deck section (1) of a suspension bridge, and a second connecting steel plate (201) is reserved on a connecting section (2) connected to the bridge deck section (1) of the suspension bridge, wherein the first connecting steel plate (101) and the second connecting steel plate (201) are connected via a connecting component (3); The connecting component (3) comprises two groups of energy dissipation weakening parts (301) symmetrically arranged on both sides of the first connecting steel plate (101) and the second connecting steel plate (201), the upper and lower sides of the energy dissipation weakening parts (301) are designed to be concave, and the outer sides of the two groups of energy dissipation weakening parts (301) are detachably mounted with reinforcing connecting plates (303).

2. A suspension bridge node connection device according to claim 1, characterized in that: The energy dissipation weakening member (301) is designed in an "L"-shaped structure, wherein one side of the "L"-shaped energy dissipation weakening member (301) is fastened to the connecting section (2), and the other side is attached to and connected to the second connecting steel plate (201).

3. A suspension bridge node connection device according to claim 1, characterized in that: Second arc-shaped holes (304) are provided at four corner positions of the energy dissipation weakening member (301), and the four second arc-shaped holes (304) are detachably connected to the first connecting steel plate (101) and the second connecting steel plate (201) respectively by bolts.

4. A suspension bridge node connection device according to claim 1, characterized in that: A third arc-shaped hole (305) is horizontally provided at the middle position of the energy dissipation and weakening member (301); A first arc-shaped hole (302) is horizontally provided at the middle position of the reinforcing connecting plate (303), wherein the first arc-shaped hole (302) corresponds to a corresponding third arc-shaped hole (305), and the two are fixed by bolts.

5. A suspension bridge node connection device according to claim 1, characterized in that: The reinforcement connecting plate (303) is in a rectangular plate-shaped structure.

6. A suspension bridge node connection device according to claim 1, characterized in that: An inner groove body is provided at the end of the bridge deck section (1), the first connecting steel plate (101) is located in the inner groove body, and the top of the inner groove body can be connected to a cover plate.

7. A suspension bridge node connection device according to claim 1, characterized in that: The connecting section (2) and the second connecting steel plate (201) form a "T"-shaped structure.

Images