A high-speed railway bridge closed sound barrier boot-shaped column foot

Abstract

The invention discloses a high-speed railway bridge closed sound barrier boot-shaped column foot, which is composed of a column foot steel structure component and a bolt component; the column foot steel structure component is in a boot shape, and is composed of a column foot upper flange, a column foot web, a web stiffening rib and a bottom plate; the column foot upper flange is butt-welded with the inner flange of the sound barrier H-shaped steel column, the column foot web is butt-welded with the web of the sound barrier H-shaped steel column, the web stiffening ribs are symmetrically distributed on both sides of the column foot web, the bottom plate is horizontally arranged at the bottom of the column foot, the outer flange of the sound barrier H-shaped steel column is welded to the bottom plate, a bolt hole for bolt installation is opened on the bottom plate, the bolt component is pre-buried in the bridge, the bolt component passes through the bolt hole on the bottom plate and is connected and fixed with the bottom plate through a locking device, and the column foot and the bridge are connected as a whole. The invention realizes the inner side inspection of the column foot bolt, and the connection is reliable; at the same time, the strength and rigidity of the bridge closed sound barrier column foot are improved through the column foot structure, the setting of the stiffening rib and the arrangement of the bolts.

Description

Technical Field

[0001] The invention relates to the technical field of noise prevention and control, and in particular to a closed sound barrier boot-shaped column foot for a high-speed railway bridge. Background Art

[0002] With the improvement of national economic capacity and the improvement of noise control level, there are more and more closed sound barriers. According to the layout range of the sound barrier, the closed sound barrier is divided into semi-closed and fully closed, and the installation process mostly adopts the plug-in type. At present, the load-bearing structure of the closed sound barrier usually adopts the H-shaped steel frame structure, the column foot adopts the rigid connection form, and the column foot bolts are arranged on both sides of the H-shaped steel column. The plug-in type installation process is to insert the sound barrier unit plate between the H-shaped steel flanges, which makes it impossible to inspect the outer bolts of the sound barrier unit plate within the column foot range from the inside.

[0003] When a train passes through a closed sound barrier, a large train aerodynamic pressure will be generated, especially when the trains meet inside the closed sound barrier. As the foundation of the closed sound barrier, the column foot needs to have a certain rigidity and strength. When the rigidity of the column foot is small, the displacement of the closed sound barrier will become larger; when the strength of the column foot is small, fatigue damage may occur.

[0004] Therefore, solving the problem that the outer bolts of the closed sound barrier column base cannot be inspected from the inside can maximize the convenience of daily inspections by railway engineering departments; at the same time, ensuring the stiffness and strength of the column base is also a difficult problem that urgently needs to be solved in this technical field. Summary of the invention

[0005] The purpose of the present invention is to provide a high-speed railway bridge closed sound barrier boot-shaped column foot, which can solve the problem that the existing closed sound barrier cannot be inspected from the inside, and the strength and rigidity of the column foot are guaranteed by the column foot structure, the setting of stiffening ribs and the arrangement of bolts. This new column foot form improves the strength and rigidity of the bridge closed sound barrier column foot by changing the connection mode between the steel structure and the bridge, and realizes the inside inspection of the column foot bolts.

[0006] The present invention is achieved as follows: a high-speed railway bridge closed sound barrier boot-shaped column base, which is composed of a column base steel structure component and a bolt component; the column base steel structure component is in a boot shape, and is composed of a column base upper flange, a column base web, web stiffening ribs and a bottom plate; the column base upper flange is butt-welded to the inner flange of the sound barrier H-shaped steel column, the column base web is butt-welded to the web of the sound barrier H-shaped steel column, the web stiffening ribs are symmetrically distributed on both sides of the column base web, the bottom plate is horizontally arranged at the lowest part of the column base, the outer flange of the sound barrier H-shaped steel column is welded to the bottom plate, the bottom plate is provided with bolt holes for bolt installation, the bolt assembly is pre-buried in the bridge, the bolt assembly passes through the bolt holes on the bottom plate and is connected and fixed to the bottom plate through a locking device, so that the column base and the bridge are connected as a whole.

[0007] Preferably, the upper flange of the column foot is naturally curved inward from top to bottom.

[0008] Preferably, the upper flange of the column base, the web of the column base, the web stiffening ribs and the bottom plate are connected by welding.

[0009] Preferably, the bolt assembly comprises a longitudinal U-shaped bolt and a transverse U-shaped bolt, and the longitudinal U-shaped bolt and the transverse U-shaped bolt are arranged vertically.

[0010] Further preferably, the longitudinal U-shaped bolts and the transverse U-shaped bolts are both arranged between the web stiffening ribs.

[0011] Preferably, the bottom plate is also provided with slurry discharge holes for pouring gravity mortar.

[0012] Preferably, the locking device comprises a nut and a washer or a backing plate.

[0013] The present invention has the following advantages and beneficial effects:

[0014] The present invention changes the connection mode between the H-shaped steel column of the sound barrier and the bridge by adopting a boot-shaped column foot, thereby realizing the inner side inspection of the column foot bolts and providing a reliable connection; at the same time, the strength and rigidity of the column foot of the closed sound barrier of the bridge are improved through the column foot structure, the setting of stiffening ribs and the arrangement of bolts. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the shoe-shaped column foot provided by an embodiment of the present invention along the direction of the railway line;

[0016] Figure 2 It is a schematic diagram of the structure of the shoe-shaped column foot provided by an embodiment of the present invention in a direction perpendicular to the railway line.

[0017] In the figure: 1. Outer flange of column; 2. Longitudinal U-shaped bolt; 3. Upper flange of column foot; 4. Web of column foot; 5. Web stiffening rib; 6. Bottom plate; 7. Inner flange of column; 8. Web of column; 9. Bridge; 10. Gravity mortar; 11. Positioning steel plate; 12. Transverse U-shaped bolt. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0019] In the description of the present invention, it is necessary to understand that the orientations or positional relationships indicated by the terms "upper", "lower", "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] Example

[0022] See also Figure 1 and Figure 2 An embodiment of the present invention provides a high-speed railway bridge closed sound barrier boot-shaped column base, which is composed of a column base steel structure component and a bolt component; the column base steel structure component is boot-shaped, and the column base steel structure component is composed of a column base upper flange 3, a column base web 4, a web stiffening rib 5 and a bottom plate 6, the column base upper flange 3 is butt-welded to the inner flange 7 of the sound barrier H-shaped steel column, the column base web 4 is butt-welded to the web 8 of the sound barrier H-shaped steel column, the web stiffening ribs 5 are symmetrically distributed on both sides of the column base web 4, the bottom plate 6 is horizontally arranged at the bottom of the column base, and the column base upper flange 3, column base web 4, web stiffening ribs 5 and bottom plate 6 are welded to each other. The outer flange 1 of the H-shaped steel column of the sound barrier is welded to the base plate 6, and the base plate 6 is provided with bolt holes for bolt installation. The bolt assembly is pre-buried in the bridge 9, and the bolt rod of the bolt assembly passes through the bolt hole on the base plate 6 and is locked and fixed to the base plate 6 through a pad or a gasket and a double nut, thereby connecting the column base and the bridge 9 into a whole.

[0023] Preferably, the upper flange 3 of the column foot is naturally curved inward from top to bottom.

[0024] Preferably, the bolt assembly includes a longitudinal U-shaped bolt 2 and a transverse U-shaped bolt 12, and the longitudinal U-shaped bolt 2 and the transverse U-shaped bolt 12 are arranged vertically, and the longitudinal U-shaped bolt 2 and the transverse U-shaped bolt 12 are arranged between the web stiffening ribs 5. The longitudinal U-shaped bolt 2 is the main force-bearing bolt, and its diameter is determined by force calculation; the transverse U-shaped bolt 12 is a secondary force-bearing bolt, and can also be used to resist shear force or fix the grounding device. The bolt shape is made into a U shape mainly to reduce the anchoring length, and a straight anchor or anchor plate can also be used. The number of bolts is calculated based on the actual force conditions. The longitudinal U-shaped bolt located on the outside mainly bears the bending moment of the column foot, and the transverse U-shaped bolt located on the inside mainly bears the shear force and also acts as a shear key.

[0025] Preferably, the base plate 6 is also provided with slurry discharge holes for pouring gravity mortar.

[0026] The specific installation process of the present invention is as follows:

[0027] When prefabricating the bridge 9, the longitudinal U-shaped bolts 2 and the transverse U-shaped bolts 12 are embedded in the corresponding arrangement, and the longitudinal U-shaped bolts 2 and the transverse U-shaped bolts 12 are fixed in position by the positioning steel plate 11. The column foot steel structure components are assembled, and the column foot upper flange 3, the column foot web 4 and the bottom plate 6 are welded together by fillet welds; the web stiffening ribs 5 are welded to the column foot web 4 by fillet welds; the inner flange 7 of the sound barrier H-shaped steel column and the column foot upper flange 3, the sound barrier H-shaped steel column web 8 and the column foot web 4 are welded respectively by butt welds; the outer flange 1 of the sound barrier H-shaped steel column and the bottom plate 6 are welded by groove welding. After the welding is completed, when installing on site, the longitudinal U-shaped bolts 2 and the transverse U-shaped bolts 12 are passed through the bolt holes on the bottom plate 6, and the elevation is adjusted by gravity mortar 10. After reaching the design elevation, the column foot and the bridge 9 are connected as a whole by locking with nuts and washers.

[0028] The column foot steel structure assembly has a natural transition with the main body of the sound barrier H-shaped steel column, and has good integrity. The sound barrier unit plate is arranged on the outer flange 1 side of the sound barrier H-shaped steel column, and all the embedded bolts are located on the inner side of the sound barrier, which is convenient for column foot maintenance.

[0029] The present invention changes the connection mode between the H-shaped steel column of the sound barrier and the bridge by adopting a boot-shaped column foot, thereby realizing the inner side inspection of the column foot bolts and transferring the upper closed sound barrier load to the bridge. At the same time, the strength and rigidity of the column foot of the closed sound barrier of the bridge are improved through the column foot structure, the setting of stiffening ribs and the arrangement of bolts.

[0030] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are within the scope of the technical solution of the present invention.

Claims

1. A high-speed railway bridge closed sound barrier boot-shaped column foot, characterized in that: It is composed of a column foot steel structure component and a bolt component; the column foot steel structure component is in a boot shape, and is composed of a column foot upper flange, a column foot web, web stiffening ribs and a bottom plate; the column foot upper flange is butt-welded to the inner flange of the sound barrier H-shaped steel column; the column foot web is butt-welded to the web of the sound barrier H-shaped steel column; the web stiffening ribs are symmetrically distributed on both sides of the column foot web; the bottom plate is horizontally arranged at the bottom of the column foot; the outer flange of the sound barrier H-shaped steel column is welded to the bottom plate; bolt holes for bolt installation are opened on the bottom plate; the bolt component is pre-buried in the bridge; the bolt component passes through the bolt holes on the bottom plate and is connected and fixed to the bottom plate through a locking device, so that the column foot and the bridge are connected as a whole; The bolt assembly comprises a longitudinal U-shaped bolt and a transverse U-shaped bolt, wherein the longitudinal U-shaped bolt and the transverse U-shaped bolt are arranged vertically; the longitudinal U-shaped bolt and the transverse U-shaped bolt are arranged between the web stiffening ribs; The longitudinal U-shaped bolts are located on the outside and bear the bending moment of the column foot, and the transverse U-shaped bolts are located on the inside and bear the shear force.

2. The high-speed railway bridge closed sound barrier boot-shaped column foot as claimed in claim 1, characterized in that: The upper flange of the column foot is naturally curved inwards from top to bottom.

3. The high-speed railway bridge closed sound barrier boot-shaped column foot as claimed in claim 1, characterized in that: The upper flange of the column foot, the column foot web, the web stiffening ribs and the bottom plate are welded and connected to each other.

4. The high-speed railway bridge closed sound barrier boot-shaped column foot as claimed in claim 1, characterized in that: The bottom plate is also provided with slurry discharge holes for pouring gravity mortar.

5. The high-speed railway bridge closed sound barrier boot-shaped column foot as claimed in claim 1, characterized in that: The locking device comprises a nut and a washer or a backing plate.

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