CN117248443B - Multifunctional supporting structure of steel truss girder - Google Patents
Multifunctional supporting structure of steel truss girderInfo
- Publication number
- CN117248443B CN117248443B CN202311375465.0A CN202311375465A CN117248443B CN 117248443 B CN117248443 B CN 117248443B CN 202311375465 A CN202311375465 A CN 202311375465A CN 117248443 B CN117248443 B CN 117248443B
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- China
- Prior art keywords
- lower chord
- plate
- support
- lifting
- bottom plate
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/04—Bearings; Hinges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
本发明公开了一种钢桁梁多功能支承构造，涉及钢桥设计领域，该结构包括下弦杆和支座垫板；所述下弦杆包括下弦杆底板，所述下弦杆底板向所述下弦杆的两侧延伸；所述支座垫板垫设在所述下弦杆底板的底部，且所述支座垫板与所述下弦杆底板两侧的延伸区域通过螺栓相连；其中，所述下弦杆底板的顶部的每个角处均设有起顶组件，所述起顶组件与所述下弦杆相连。本申请通过延长下弦杆底板，在延伸的下弦杆底板上与垫板进行螺栓连接，使得工作人员可以不进入下弦杆就可以施拧螺栓，避免了增设人孔对弦杆力学性能的削弱；本申请还通过在下弦杆底板的顶部的每个角处设置起顶组件，充分利用下弦杆的结构，节省了空间。
This invention discloses a multifunctional support structure for steel trusses, relating to the field of steel bridge design. The structure includes a lower chord and support plates. The lower chord includes a lower chord base plate extending to both sides of the lower chord. The support plates are placed on the bottom of the lower chord base plate and are bolted to the extended areas on both sides of the lower chord base plate. A jacking assembly is provided at each corner of the top of the lower chord base plate, and the jacking assembly is connected to the lower chord. This application extends the lower chord base plate and bolts it to the support plate, allowing workers to tighten bolts without entering the lower chord, thus avoiding the weakening of the chord's mechanical properties by adding manholes. Furthermore, by providing jacking assemblies at each corner of the top of the lower chord base plate, this application fully utilizes the structure of the lower chord, saving space.
Description
Technical Field
The invention relates to the field of steel bridge design, in particular to a multifunctional supporting structure of a steel truss girder.
Background
The bridge support is an important structural component for connecting the upper structure and the lower structure of the bridge, is an important force transmission device of the bridge, has a complex structure and has a large number of bolts and stiffening ribs. In the traditional steel truss girder design, the support backing plate and the bottom plate are bolted on four sides, and in order to meet the maintenance of the support in the later stage, a manhole is required to be formed in the bottom plate of the chord member, so that personnel can enter the chord member to apply screwing bolts and replace parts. Because the support area bottom plate atress is great for after the chord member bottom plate is seted up the manhole, can cause very big weakening to the bottom plate atress performance, even carry out flitch reinforcement around the manhole, still can leave great potential safety hazard, simultaneously because this manhole department is non-airtight environment, still can influence the durability of chord member. In the existing design, in order to facilitate the replacement of the later support, corresponding structures are additionally arranged on the left side and the right side of the chord member to set temporary jacking devices, so that the structural design and the construction complexity are necessarily increased, and the manufacturing cost is also increased.
Disclosure of Invention
Aiming at the defects existing in the prior art, the application provides a multifunctional supporting structure of a steel truss girder, which can solve the problems that the stress performance of a bottom plate can be influenced, larger potential safety hazards are left and the durability of a chord is influenced when a manhole is arranged on the bottom plate of the chord of the existing bridge support, and can also solve the problems that the existing bridge support is additionally provided with corresponding structures on the left side and the right side of the chord to be provided with temporary jacking devices, thereby increasing the complexity of structural design and construction and increasing the manufacturing cost of the bridge support.
The embodiment of the application provides a multifunctional supporting structure of a steel truss girder, which is characterized by comprising a lower chord member and support base plates, wherein the lower chord member comprises a lower chord member bottom plate, the lower chord member bottom plate extends to two sides of the lower chord member, the support base plates are arranged at the bottom of the lower chord member bottom plate in a cushioning mode, the support base plates are connected with extension areas at two sides of the lower chord member bottom plate through bolts, and each corner of the top of the lower chord member bottom plate is provided with a jacking assembly which is connected with the lower chord member.
In combination with the first aspect, in an embodiment, the lower chord further includes two opposite and parallel node plates and a lower chord top plate connecting upper ends of the two node plates.
In combination with the first aspect, in one embodiment, a plurality of partitions are disposed inside the lower chord member, the partitions are disposed vertically, and the partitions are disposed in the region of the support pad at equal intervals and in parallel.
In combination with the first aspect, in one embodiment, a plurality of support stiffening ribs are provided on the extending areas on two sides of the bottom chord bottom plate, and the support stiffening ribs correspond to the positions of the partition plates and are connected through the node plates.
With reference to the first aspect, in one embodiment, the support stiffener is an irregular rectangular plate.
With reference to the first aspect, in one embodiment, the bolts are uniformly distributed in a region surrounded by the plurality of standoff stiffening plates and the standoff backing plate.
In combination with the first aspect, in one embodiment, the jacking assembly includes a jacking plate and four jacking stiffeners, the jacking plate is arranged at the bottom of each corner of the bottom chord floor, and the jacking stiffeners are arranged above the bottom chord floor and correspond to the jacking plate.
In combination with the first aspect, in one embodiment, the four lifting stiffeners of the lifting assembly are divided into two pairs, each pair of lifting stiffeners is symmetrically arranged about the gusset plate, the two pairs of lifting stiffeners are parallel to each other, the bottom edges of the lifting stiffeners are welded with the lifting pad, and the side edges of the lifting stiffeners are welded with the gusset plate 7.
With reference to the first aspect, in one embodiment, the lifting stiffener is an irregular rectangular plate.
In combination with the first aspect, in an embodiment, the bottom chord bottom plate is a rectangular plate with a width that is wider, and a width of the bottom chord bottom plate inside an area surrounded by the four jacking pads is greater than a width of the bottom chord bottom plate outside the area surrounded by the four jacking pads, and the width variation is an arc.
The technical scheme provided by the embodiment of the application has the beneficial effects that at least:
1. According to the application, the lower chord bottom plate is prolonged, and the lower chord bottom plate is connected with the backing plate through the bolts, so that workers can screw the bolts without entering the lower chord, the mechanical property of the chord is prevented from being weakened by adding the manhole, and the problems that the stress performance of the bottom plate is influenced, larger potential safety hazard is left and the durability of the chord is influenced in the prior art are solved by arranging the manhole on the lower chord bottom plate;
2. according to the application, the jack-up assembly is arranged at each corner of the top of the bottom plate of the lower chord, so that the structure of the lower chord is fully utilized, the space is saved, and the problems that in the prior art, the temporary jack-up devices are arranged by additionally arranging corresponding structures at the left side and the right side of the lower chord, the complexity of structural design and construction is increased, and the manufacturing cost of the bridge support is increased are solved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic plan view of a multifunctional steel truss girder support structure according to an embodiment of the present application;
FIG. 2 is a schematic cross-sectional view of a support pad of a multifunctional support structure for a steel truss girder according to an embodiment of the present application;
FIG. 3 is a schematic cross-sectional view of a jack-up assembly of a steel truss multifunctional support structure provided by an embodiment of the present application;
FIG. 4 is a diagram of a support pad and bolts of a multifunctional support structure for a steel truss girder according to an embodiment of the present application;
In the figure, 1, a lower chord, 101, a lower chord bottom plate, 102, a node plate, 103, a lower chord top plate, 2, a partition plate, 3, a support base plate, 4, a support stiffening rib, 5, a jacking base plate and 6, a jacking stiffening rib.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The embodiment of the application provides a multifunctional supporting structure of a steel truss girder, which can solve the problems that an existing bridge support is provided with a manhole on a chord bottom plate, the stress performance of the bottom plate is affected, a larger potential safety hazard is left, and the durability of the chord is affected, and can also solve the problems that the existing bridge support is additionally provided with corresponding structures on the left side and the right side of the chord to arrange temporary jacking devices, so that the complexity of structural design and construction is increased, and the manufacturing cost of the bridge support is increased.
Referring to fig. 1, the embodiment of the application provides a multifunctional supporting structure of a steel truss girder, which comprises a lower chord member 1 and support base plates 3, wherein the lower chord member 1 comprises a lower chord member bottom plate 101, the lower chord member bottom plate 101 extends to two sides of the lower chord member 1, the support base plates 3 are arranged at the bottom of the lower chord member bottom plate 101 in a cushioning manner, the support base plates 3 are connected with the extending areas on two sides of the lower chord member bottom plate 101 through bolts, and a jacking component is arranged at each corner of the top of the lower chord member bottom plate 101 and is connected with the lower chord member 1.
According to the steel truss girder multifunctional supporting structure provided by the embodiment of the application, through prolonging the lower chord bottom plate 101 and carrying out bolt connection with the support base plate 3 on the extended lower chord bottom plate 101, workers can screw bolts without entering the lower chord 1, the problem that the mechanical property of the chord is weakened by additionally arranging a manhole is avoided, compared with the existing steel truss girder supporting structure, the existing steel truss girder supporting structure can be provided with the manhole on the lower chord bottom plate 101, the stress performance of the bottom plate is influenced, the problem that the potential safety hazard is greatly left, and the durability of the chord is influenced is solved, and meanwhile, the structure of the lower chord bottom plate 101 is fully utilized, the space is saved, the problem that the construction cost of the structure is increased, the construction complexity is increased, and the problem of a bridge is improved because temporary jacking devices are additionally arranged on the left side and the right side of the lower chord 1 in the prior art.
As an alternative embodiment, referring to fig. 1 and 2, the bottom chord 1 further includes two opposite and parallel node plates 102 and a bottom chord top plate 103 connecting upper ends of the two node plates 102. Chord reinforcing ribs are vertically arranged at the middle parts of the lower chord bottom plate 101, the node plate 102 and the lower chord top plate 103 so as to strengthen the whole supporting strength of the lower chord 1. Meanwhile, the node plate 102 is high in thickness and strength, and can be used as a foundation for subsequent construction to construct a roof assembly and a support assembly.
As an alternative embodiment, see fig. 1 and 2, the lower chord 1 is internally provided with a plurality of partitions 2, the partitions 2 being arranged vertically and the partitions 2 being arranged at equal intervals and in parallel in the region of the abutment pad 3. The partition plates 2 are used for enhancing the out-of-plane stability of the node plates 102 and increasing the bearing area of the overall structure, and the partition plates 2 are arranged at the same interval and in parallel, so that the partition plates 2 can uniformly transmit the received pressure, the overall uniform stress is ensured, and the service life of the multifunctional supporting structure of the steel truss provided by the embodiment of the application is prolonged.
As an alternative embodiment, referring to fig. 1 and 2, a plurality of support stiffeners 4 are provided on the extension areas of both sides of the bottom chord plate 101, and the support stiffeners 4 correspond to the locations of the separator plates 2 and are connected through the node plates 102. The support stiffening ribs 4 are used for increasing the local rigidity of the lower chord member 1, and can further increase the bearing area of the whole structure, so that the bearing capacity of the multifunctional bearing structure of the steel truss provided by the embodiment of the application is enhanced.
As an alternative embodiment, the support stiffener 4 is an irregular rectangular plate, as shown in fig. 1 and 2. The support stiffener 4 is an irregular rectangular plate with a chamfer, and the chamfer is located at the top of the support stiffener 4 and away from one end of the gusset plate 102, and the chamfer of the support stiffener 4 can reduce stress concentration.
As an alternative embodiment, referring to fig. 1,2 and 4, the bolts are uniformly distributed in the area surrounded by the plurality of support stiffeners 4 and the support pad 3. The bolts on each side comprise two rows, four areas are surrounded by the support stiffening plate 4 and the support backing plate 3 at each time, and the number of the bolts in each area is eight, ten and eight in sequence from one end to the other end. Because the bolts are arranged on the outer sides of the gusset plates 102, constructors do not need to enter the chord members for internal construction, the bolts can be screwed only on the outer sides of the chord members, and the mechanical properties of the chord members are prevented from being weakened by additionally arranging the manholes.
As an alternative embodiment, referring to fig. 1 and 3, the jacking assembly includes a jacking plate 5 and four jacking stiffeners 6, the jacking plate 5 is padded at the bottom of each corner of the bottom chord floor 101, and the jacking stiffeners 6 are disposed above the bottom chord floor 101 and correspond to the positions of the jacking plates 5. The jacking components are erected at four corners of the lower chord bottom plate 101 to serve as components for placing jacking equipment, wherein the jacking base plate 5 is required to meet the space requirement required by a jack for later maintenance and arrangement.
As an alternative embodiment, referring to fig. 1 and 3, four lifting stiffeners 6 of the lifting assembly are divided into two pairs, each pair of lifting stiffeners 6 is symmetrically arranged about the gusset plate 7, the two pairs of lifting stiffeners 6 are parallel to each other, the bottom edges of the lifting stiffeners 6 are welded with the lifting pad 5, and the side edges of the lifting stiffeners 6 are welded with the gusset plate 7. The node plates 7 have enough strength and thickness, so that the lifting assembly formed by the stiffening plates 6, the node plates 7 and the lifting backing plates 5 has certain bearing strength. Compared with the existing lifting structure, the existing lifting structure is characterized in that the transverse beams are additionally arranged on the left side and the right side of the lower chord member 1 to place temporary lifting devices, the structural design and construction complexity are increased, and the manufacturing cost is improved.
As an alternative embodiment, the lifting stiffeners 6 are irregular rectangular plates, as shown in fig. 1 and 3. The top stiffener 6 is an irregular rectangular plate with a cut angle, and the cut angle is located at the top of the top stiffener 6 and away from one end of the gusset 102, and the cut angle of the top stiffener 6 can reduce stress concentration.
As an alternative embodiment, referring to fig. 1 and 3, the bottom chord bottom plate 101 is a rectangular plate with a wide width, and the width of the bottom chord bottom plate 101 inside the area surrounded by the four jacking plates 5 is larger than the width of the bottom chord bottom plate 101 outside the area surrounded by the four jacking plates 5, and the width change is an arc. Because the multiple-function supporting structure for the steel truss provided by the embodiment of the application needs to arrange the plurality of backing plates at the bottom of the bottom chord bottom plate 101, so that the width of the bottom chord bottom plate 101 is larger, in order to save steel as much as possible, the structure of the bottom chord bottom plate 101 is determined as a rectangular plate with a wide width, steel at four corners outside the backing plate area is omitted, and meanwhile, in order to avoid the phenomenon of stress concentration, the width change position of the bottom chord bottom plate 101 is transited in an arc change mode.
The embodiment of the application provides a multifunctional supporting structure of a steel truss girder, which comprises the following specific embodiments:
before the combined construction of the multifunctional supporting structure of the steel truss provided by the embodiment of the application is started, the multifunctional supporting structure of the steel truss is designed in advance, and the lower chord bottom plate 101 with the appearance of a rectangular plate with a wide width, a plurality of support stiffening ribs 4 with the appearance of an irregular rectangular plate, a plurality of lifting stiffening ribs 6 with the appearance of the irregular rectangular plate and other components are cut on the steel structure according to the designed structure, and then the components are assembled. Firstly, assembling the whole structure of the lower chord member 1, arranging a support base plate 3 at the center of the bottom of the lower chord member 1, then welding three diaphragm plates 2 in the same interval in parallel inside the lower chord member 1 in the region of the support base plate 3, wherein the diaphragm plates 2 are perpendicular to the lower chord member bottom plate 101, then welding support stiffening ribs 4 outside the lower chord member 1, wherein the positions of the support stiffening ribs 4 correspond to the positions of the diaphragm plates 2, and the support stiffening ribs 4 are arranged outside the node plates 102. After the support stiffening ribs 4 are welded, bolts are uniformly screwed in the areas surrounded by the support stiffening plates 4 and the support backing plates 3, wherein two rows of bolts are arranged on each side of the lower chord member 1, four areas are surrounded by the support stiffening plates 4 and the support backing plates 3 each time, and the number of the bolts in each area is eight, ten and eight in sequence from one end to the other end. Finally, a jacking assembly is arranged on the lower chord member 1, a jacking base plate 5 is arranged at the bottom of each corner of the lower chord member bottom plate 101 in a cushioning mode, jacking stiffening ribs 6 are arranged above the lower chord member bottom plate 101 and correspond to the jacking base plate 5 in position, four jacking stiffening ribs 6 of the jacking assembly are divided into two pairs, each pair of jacking stiffening ribs 6 are symmetrically arranged about the node plate 7, the two pairs of jacking stiffening ribs 6 are parallel to each other, the bottom edges of the jacking stiffening ribs 6 are welded with the jacking base plate 5, and the side edges of the jacking stiffening ribs 6 are welded with the node plate 7. After the whole welding is finished, the combination assembly of the multifunctional supporting structure of the steel truss girder provided by the embodiment of the application can be finished.
In the description of the present application, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present application and simplifying the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present application. Unless specifically stated or limited otherwise, the terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, or indirectly connected via an intervening medium, or may be in communication between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
It should be noted that in the present application, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.
The foregoing is only a specific embodiment of the application to enable those skilled in the art to understand or practice the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A steel truss multifunctional support structure, comprising:
A lower chord (1), the lower chord (1) comprising a lower chord bottom plate (101), the lower chord bottom plate (101) extending to both sides of the lower chord (1);
The support base plate (3) is arranged at the bottom of the lower chord bottom plate (101) in a cushioning mode, and the support base plate (3) is connected with extension areas at two sides of the lower chord bottom plate (101) through bolts;
The lifting assembly comprises a lifting base plate (5) and four lifting stiffening ribs (6), the lifting base plate (5) is arranged at the bottom of each corner of the lower chord bottom plate (101) in a cushioning mode, and the lifting stiffening ribs (6) are arranged above the lower chord bottom plate (101) and correspond to the lifting base plate (5) in position.
2. A steel truss multifunctional supporting structure according to claim 1, wherein said lower chord (1) further comprises two opposite and parallel node plates (102) and a lower chord top plate (103) connecting upper ends of the two node plates (102).
3. A steel truss girder multifunctional supporting structure as claimed in claim 2, wherein a plurality of partition plates (2) are arranged in the lower chord member (1), the partition plates (2) are vertically arranged, and the partition plates (2) are arranged in the region of the support base plate (3) at equal intervals in parallel.
4. A multi-functional supporting structure of steel truss girder according to claim 3, wherein a plurality of support stiffening ribs (4) are provided on the extension areas of both sides of the bottom plate (101) of the lower chord, and the support stiffening ribs (4) are corresponding to the position of the partition plate (2) and are connected through the node plate (102).
5. A multi-functional support structure for a steel truss girder according to claim 4, wherein said support stiffener (4) is an irregular rectangular plate.
6. A multi-functional steel truss girder support structure according to claim 5, wherein said bolts are uniformly distributed in a region surrounded by a plurality of said support stiffeners (4) and said support pad (3).
7. A steel truss girder multifunctional supporting structure as claimed in claim 2, wherein four lifting stiffeners (6) of said lifting assembly are divided into two pairs, each pair of said lifting stiffeners (6) is symmetrically arranged about said gusset plate (7), two pairs of said lifting stiffeners (6) are parallel to each other, and bottom edges of said lifting stiffeners (6) are welded to said lifting pad (5), and side edges of said lifting stiffeners (6) are welded to said gusset plate (7).
8. A multi-functional support structure for steel truss girder according to claim 7, wherein said raised stiffening rib (6) is an irregular rectangular plate.
9. A steel truss multifunctional supporting structure according to claim 6, wherein said lower chord bottom plate (101) is a rectangular plate having a wide width, and the width of said lower chord bottom plate (101) inside the area surrounded by four jacking plates (5) is larger than the width of said lower chord bottom plate (101) outside the area surrounded by four jacking plates (5), and the width change is an arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202311375465.0A CN117248443B (en) | 2023-10-23 | 2023-10-23 | Multifunctional supporting structure of steel truss girder |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311375465.0A CN117248443B (en) | 2023-10-23 | 2023-10-23 | Multifunctional supporting structure of steel truss girder |
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| CN117248443A CN117248443A (en) | 2023-12-19 |
| CN117248443B true CN117248443B (en) | 2026-02-06 |
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| CN105839788A (en) * | 2016-05-12 | 2016-08-10 | 中国矿业大学 | Novel steel pipe column and shaped steel beam assembling method |
| CN114045937A (en) * | 2021-11-26 | 2022-02-15 | 天津大学 | Replaceable shock insulation support suitable for column top shock insulation |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100740888B1 (en) * | 2005-09-06 | 2007-07-19 | 선영선 | Reinforcement support structure for repair replacement of truss bridge and its method |
| KR20140044660A (en) * | 2012-10-05 | 2014-04-15 | 김정환 | Truss girder with upper and lower flange double pipe composite flange |
| CN216515079U (en) * | 2021-10-18 | 2022-05-13 | 江苏沪宁钢机股份有限公司 | Multi-direction connected node box bridge chord member |
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- 2023-10-23 CN CN202311375465.0A patent/CN117248443B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105839788A (en) * | 2016-05-12 | 2016-08-10 | 中国矿业大学 | Novel steel pipe column and shaped steel beam assembling method |
| CN114045937A (en) * | 2021-11-26 | 2022-02-15 | 天津大学 | Replaceable shock insulation support suitable for column top shock insulation |
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