CN108643023B - Coal conveying trestle - Google Patents
Coal conveying trestle Download PDFInfo
- Publication number
- CN108643023B CN108643023B CN201810316700.XA CN201810316700A CN108643023B CN 108643023 B CN108643023 B CN 108643023B CN 201810316700 A CN201810316700 A CN 201810316700A CN 108643023 B CN108643023 B CN 108643023B
- Authority
- CN
- China
- Prior art keywords
- truss
- support
- auxiliary beam
- auxiliary
- sub
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D18/00—Bridges specially adapted for particular applications or functions not provided for elsewhere, e.g. aqueducts, bridges for supporting pipe-lines
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
The invention discloses a coal conveying trestle, and belongs to the technical field of steel structures and concrete. This coal conveying trestle includes: a truss and a plurality of supports supported below the truss; the truss comprises a sub-truss, and two ends of the sub-truss are provided with supporting legs; the support includes: a first beam, a second beam, and two support columns; the first beam and the second beam are arranged up and down and are respectively fixedly connected with the two support columns; two adjacent landing legs of two sub-trusses are fixed respectively on the top of two support posts in same support. Through directly placing the landing leg on the top of stake post for the load of landing leg will directly transmit the stake post for, no longer need transmit load through first roof beam. At this time, the support column is only subjected to compressive stress, and the connecting node of the support column and the first beam is not subjected to bending moment any more. And then reduced the mechanical strength requirement of support post, and then reduced the quantity of reinforcing bar and concrete, realized lower engineering cost.
Description
Technical Field
The invention relates to the technical field of reinforced concrete structures, in particular to a coal conveying trestle.
Background
The coal conveying trestle is an important component in a thermal power plant, and coal in a coal storage yard is conveyed to a boiler for combustion through a coal conveying belt conveyor loaded in the coal conveying trestle, so that thermal power generation is realized.
A coal transporting trestle provided in the related art is shown in fig. 1, and includes a truss 1 and a support frame 2, and the support frame 2 is supported below the truss 1. The truss 1 comprises a plurality of sections of independent sub-trusses A, and supporting legs 11 are arranged at two ends of each section of the sub-truss A. The bracket 2 includes a first beam 21 and a second beam 22 disposed up and down, and two bracket columns 23, and the first beam 21 and the second beam 22 connect the two bracket columns 23 at the same time. When the truss 1 and the support 2 are connected, two adjacent supporting legs 11 of the two sub-trusses A are fixed on the first beam 21 of the same support 2, the distance between the two adjacent supporting legs 11 of the two sub-trusses A is smaller than a preset value, and the support of the coal conveying belt conveyor due to the overlarge gap is avoided. Generally, the girder 1 has an i-beam structure and the support frame 2 has a reinforced concrete structure. The load of the supporting legs 11 of the truss 1 is transmitted to the support columns 23 of the trestle 2 through the first beams 21 of the trestle 2, so that a reliable force transmission system is formed, and the safety and reliability of the whole structural system are guaranteed.
In the process of implementing the invention, the inventor finds that the related art has at least the following problems:
the coal conveying trestle provided by the related technology is difficult to reduce the construction cost on the premise of meeting the requirement of mechanical strength. Specifically, since the leg 11 is placed on the first beam 21, the load of the leg 11 will act directly on the first beam 21. Due to the large load of the support leg 11, the first beam 21 is compressed and causes bending moment to be generated at the joint of the first beam 21 and the support column 23, thereby influencing the stress of the support column 23. At this time, in order to ensure that the first beam 21 and the support column 23 meet the requirement of mechanical strength, the cross-sectional area and the steel bar consumption of the first beam 21 and the support column 23 need to be increased, so that the construction cost is increased.
Disclosure of Invention
The embodiment of the invention provides a coal conveying trestle, which aims to overcome the defects in the related technology. The technical scheme is as follows:
a coal handling trestle, comprising: a truss and a plurality of supports supported below the truss;
the truss comprises a plurality of sub-trusses, and supporting legs are arranged at two ends of each sub-truss; the bracket includes: a first beam, a second beam, and two support columns;
the first beam and the second beam are arranged up and down and are respectively fixedly connected with the two support columns;
and two adjacent supporting legs of the adjacent sub-trusses are respectively fixed at the top ends of two support columns in the same support.
In an optional mode, a bottom plate is fixed at the lower end of the supporting leg, and the bottom plate is fixedly connected with the top end of the support column.
In an alternative form, the truss further includes: and the auxiliary truss is arranged between two adjacent sub-trusses and is connected with two adjacent support legs of the two sub-trusses.
In an alternative form, the auxiliary truss includes: a first auxiliary beam and a second auxiliary beam; the first auxiliary beam is disposed above the second auxiliary beam.
In an alternative form, the first auxiliary beam and the second auxiliary beam are welded or bolted to the support legs.
In an optional mode, an angle steel for connecting the first auxiliary beam or the second auxiliary beam is fixed on the outer side wall of the supporting leg.
In an optional mode, a first end of the first auxiliary beam is connected with the angle steel through a bolt, and a second end of the first auxiliary beam is welded with the angle steel;
the first end is provided with a bolt for connecting the first end, a strip-shaped mounting hole is formed in the angle steel, and the bolt can penetrate through the strip-shaped mounting hole and move along the length direction of the strip-shaped mounting hole.
In an alternative, the strip-shaped mounting hole is an elliptical mounting hole.
In an alternative mode, two ends of the second auxiliary beam are welded with the angle steel.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
in the embodiment of the invention, the support legs of the truss are directly placed at the top ends of the support columns, so that the load of the support legs is directly transferred to the support columns. At this time, the first beam no longer bears and transfers the load of the load supporting leg, and the support column is only subjected to compressive stress, and the connecting node of the support column and the first beam no longer bears bending moment. So, first roof beam and support column need not too big cross-sectional size and reinforcing bar quantity can satisfy the mechanical strength requirement. The coal conveying trestle provided by the embodiment of the invention changes the arrangement mode of the support legs in the truss and the support columns in the support, and further changes the stress condition of the first beam and the support columns, so that the coal conveying trestle reduces the using amount of reinforcing steel bars and concrete on the premise of meeting the requirement of mechanical strength, and further reduces the construction cost.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural view of a coal transporting trestle provided in the related art;
FIG. 2 is a schematic structural diagram of a coal transporting trestle according to an embodiment of the present invention;
FIG. 3 is a schematic view of a truss and a support connecting node in the coal handling trestle according to an embodiment of the present invention;
fig. 4-1 is a front view of a connection node of a first auxiliary truss and a sub-truss in the coal handling trestle according to the embodiment of the present invention;
fig. 4-2 is a top view of a connection node between a first auxiliary truss and a sub-truss in the coal handling trestle according to the embodiment of the present invention;
fig. 5-1 is a front view of a connection node of a second auxiliary truss and a sub-truss in the coal handling trestle according to the embodiment of the present invention;
fig. 5-2 is a top view of a connection node between a second auxiliary truss and a sub-truss in the coal handling trestle according to the embodiment of the invention.
In the drawings, the respective reference numerals are:
1. a truss;
A. a sub-truss;
B. an auxiliary truss;
11. a support leg;
12. a first auxiliary beam;
13. a second auxiliary beam;
2. a support;
21. a first beam;
22. a second beam;
23. a support post;
3. a base plate;
4. and (5) angle steel.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
An embodiment of the present invention provides a coal transporting trestle, as shown in fig. 2, the trestle includes: a truss 1 and a plurality of supports 2 supported below the truss 1;
the truss 1 comprises a plurality of sub-trusses A, and supporting legs 11 are arranged at two ends of each sub-truss A; the holder 2 includes: a first beam 21, a second beam 22, and two bracket columns 23;
the first beam 21 and the second beam 22 are arranged up and down and are respectively fixedly connected with the two support columns 23;
two adjacent support legs 11 of the adjacent sub-truss A are respectively fixed at the top ends of two support columns 23 in the same support 2.
The coal conveying trestle provided by the embodiment of the invention has the following action principle:
in the embodiment of the present invention, the legs 11 of the girder 1 are directly placed on the top ends of the cradling columns 23 so that the load of the legs 11 is directly transferred to the cradling columns 23. At this point, the first beam 21 no longer carries, transfers the load of the load leg 11, and the cradle column 23 is only under compressive stress, and its connection node with the first beam 21 no longer carries the bending moment. Thus, the first beam 21 and the support column 23 can meet the requirement of mechanical strength without excessive section size and steel bar consumption. The coal conveying trestle provided by the embodiment of the invention changes the arrangement mode of the support legs 11 in the truss 1 and the support columns 23 in the support 2, and further changes the stress conditions of the first beam 21 and the support columns 23, so that the coal conveying trestle reduces the using amount of reinforcing steel bars and concrete on the premise of meeting the requirement of mechanical strength, and further reduces the construction cost.
Meanwhile, it is also noted that, in order to meet the requirement of earthquake resistance, the support in the coal conveying trestle needs to meet the condition of 'strong column and weak beam'. However, with the coal transporting trestle in the related art, since the cross-sectional area and the amount of reinforcing steel bars of the first beam 21 that satisfy the mechanical strength requirement are large, it is difficult to further enhance the strength of the support column 23, that is, it is difficult to satisfy the condition of "strong column and weak beam". Therefore, the coal conveying trestle in the related technology is difficult to realize ideal anti-seismic performance.
However, with the coal conveying trestle provided by the embodiment of the invention, the first beam 21 can not bear the load of the support leg 11 any more, so that the cross section area and the steel bar consumption of the first beam 21 can be reduced. Under the condition, the difficulty of realizing the condition of the strong column and the weak beam is reduced, the structural requirement of the strong column and the weak beam is favorably realized, and the seismic performance of the coal conveying trestle is further improved.
Specifically, regarding the connection mode of the leg 11 and the support column 23, referring to fig. 3, the bottom plate 3 is fixed at the lower end of the leg 11, and the bottom plate 3 is fixedly connected with the top end of the support column 23. More specifically, the legs 11 and the base plate 3 are welded, and the base plate 3 is fixedly connected to the bracket posts 23 by anchor bolts. Moreover, the supporting leg 11 is of an i-steel structure, so that two anchor bolts are preferably arranged on two sides of a web plate of the supporting leg 11, and the connection stability of the supporting leg 11 and the support column 23 is ensured.
Further, since the legs 11 are placed on the top ends of the support posts 23 and only one leg 11 is placed on each support post 23 in the embodiment of the present invention, the spacing between the adjacent sub-trusses a is increased. At this time, in order to avoid that the increase of the distance between the sub-trusses 11 affects the normal operation of the coal conveying belt conveyor, the coal conveying trestle provided by the embodiment of the invention further comprises an auxiliary truss B. As shown in fig. 2, the auxiliary truss B is disposed between two adjacent sub-trusses a and is fixedly connected to two adjacent legs 11 of the two sub-trusses a. Therefore, the adjacent sub-trusses A are connected into a whole through the auxiliary truss B, and the normal operation of the coal conveying belt conveyor is ensured.
Specifically, the auxiliary girder B includes: a first auxiliary beam 12 and a second auxiliary beam 13; the first auxiliary beam 12 is disposed above the second auxiliary beam 13. The sub-trusses a are connected by the first auxiliary beam 12 and the second auxiliary beam 13. In the present embodiment, the first auxiliary beam 12 or the second auxiliary beam 13 is welded or bolted to the leg 11.
In order to facilitate the connection of the auxiliary truss B and the sub-truss A, angle steel 4 is fixed on the outer side wall of the supporting leg 11 of the sub-truss A, and the connection of the supporting leg 11 and the first auxiliary beam 12 or the second auxiliary beam 13 is realized through the angle steel 4. Preferably, the angle steels 4 are arranged in pairs, the opposite sides of the angle steels form a mounting gap, and the web of the first auxiliary beam 12 or the second auxiliary beam 13 is inserted into the gap formed by the two angle steels 4 when the angle steels are connected.
Regarding the connection manner of the first auxiliary beam 12 and the angle iron 4, specifically, the first end of the first auxiliary beam 12 is connected with the angle iron 4 by a bolt, referring to fig. 4-1 and 4-2, the first end of the first auxiliary beam 12 is connected with a bolt, and the angle iron 4 for connecting the first section is provided with a strip-shaped mounting hole, and the bolt can pass through the strip-shaped mounting hole and move along the length of the strip-shaped mounting hole. During installation, the bolts simultaneously penetrate through the strip-shaped installation holes in the angle steel 4. The second end of the first auxiliary beam 12 is welded to the angle iron 4, see in particular fig. 5-1 and 5-2.
The reason why the first auxiliary beam 12 adopts the above-described connection manner is as follows: for the girder 1, the junction of each support 2 with the girder 1 forms a fulcrum, and since the length of the girder 1 is large, the girder 1 is under the influence of gravity, and the side thereof remote from the supports 2 is under tension. In the embodiment of the present invention, since the first auxiliary beam 12 is located above the second auxiliary beam 13, that is, the first auxiliary beam 12 is located on the side of the truss 1 away from the support 2, it is not difficult to understand that the first auxiliary beam 12 is under tension. Adopt above-mentioned mode to connect first auxiliary beam 12 and angle steel 4, because the bolt can pass the strip mounting hole and move along its length direction, consequently when first auxiliary beam 12 received the pulling force, this connected mode allows first auxiliary beam 12 to produce the displacement of certain degree, and then weakens the pulling force effect, has guaranteed the internal force stability of first auxiliary beam 12.
The shape of the strip-shaped mounting hole on the angle iron 4 is not limited, for example: rectangular holes, elliptical holes, etc. And the connection mode of the bolt and the first auxiliary beam 12 is also not limited, for example: the bolts are welded to the web of the first auxiliary beam 12, or through holes for inserting the bolts are provided on the web of the first auxiliary beam 12.
Further, both ends of the second auxiliary beam 13 are welded to the angle iron 4. Because the second auxiliary beam 13 is positioned on one side of the truss 1 close to the bracket 2, the second auxiliary beam 13 does not have tensile force, and a connection mode that a strip-shaped mounting hole is matched with a bolt is not needed.
According to the coal conveying trestle provided by the embodiment of the invention, the arrangement mode of the supporting legs 11 and the support 2 is changed, and the stress conditions of the first beam 21 and the support column 23 are further optimized, so that the first beam 21 and the support column 23 of the support 2 meeting the mechanical strength requirement have smaller cross-sectional areas and less steel bar consumption, namely the engineering cost of the coal conveying trestle is reduced. Meanwhile, the using amount of building materials is reduced, so that the construction period is favorably shortened, and the guarantee is provided for the early grid-connected power generation of a power plant. In addition, the auxiliary truss B is additionally arranged in the truss 1, so that the phenomenon that the normal use of the coal conveying belt conveyor is influenced by overlarge distance between the sub-trusses A is avoided, and the use safety is ensured.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. The utility model provides a coal conveying trestle which characterized in that, the trestle includes: a truss (1) and a plurality of supports (2) supported below the truss (1);
the truss (1) comprises a plurality of sub-trusses (A), and supporting legs (11) are arranged at two ends of each sub-truss (A);
the bracket (2) comprises: a first beam (21), a second beam (22), and two bracket columns (23); the first beam (21) and the second beam (22) are arranged up and down and are respectively fixedly connected with the two support columns (23);
two adjacent supporting legs (11) of the adjacent sub-trusses (A) are respectively fixed at the top ends of two support columns (23) in the same support (2);
the truss (1) further comprises: the auxiliary truss (B) is arranged between two adjacent sub-trusses (A) and is connected with two adjacent support legs (11) of the two sub-trusses (A);
the auxiliary truss (B) includes: a first auxiliary beam (12) and a second auxiliary beam (13); the first auxiliary beam (12) is arranged above the second auxiliary beam (13);
the first auxiliary beam (12) or the second auxiliary beam (13) is welded or bolted with the support leg (11);
an angle steel (4) used for connecting the first auxiliary beam (12) or the second auxiliary beam (13) is fixed on the outer side wall of the supporting leg (11);
the first end of the first auxiliary beam (12) is in bolted connection with the angle steel (4), and the second end of the first auxiliary beam (12) is welded with the angle steel (4);
the first end is provided with a bolt, the angle steel (4) used for being connected with the first end is provided with a strip-shaped mounting hole, and the bolt can penetrate through the strip-shaped mounting hole and move along the length direction of the strip-shaped mounting hole.
2. The coal conveying trestle of claim 1, characterized in that a bottom plate (3) is fixed to the lower end of the leg (11), and the bottom plate (3) is fixedly connected with the top end of the support column (23).
3. The coal handling trestle of claim 1, wherein the strip-shaped mounting holes are elliptical mounting holes.
4. The coal handling trestle of claim 1, characterized in that the two ends of the second auxiliary beam (13) are welded to the angle steel (4).
5. The coal handling trestle of claim 1, characterized in that said angles (4) are arranged in pairs;
opposite sides of each pair of said angles (4) form a mounting gap into which the web of said first auxiliary beam (12) or said second auxiliary beam (13) is inserted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810316700.XA CN108643023B (en) | 2018-04-10 | 2018-04-10 | Coal conveying trestle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810316700.XA CN108643023B (en) | 2018-04-10 | 2018-04-10 | Coal conveying trestle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108643023A CN108643023A (en) | 2018-10-12 |
| CN108643023B true CN108643023B (en) | 2020-01-21 |
Family
ID=63745748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810316700.XA Active CN108643023B (en) | 2018-04-10 | 2018-04-10 | Coal conveying trestle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108643023B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113215989B (en) * | 2021-04-14 | 2022-11-01 | 上海通涵建筑工程有限公司 | Steel trestle and construction method thereof |
-
2018
- 2018-04-10 CN CN201810316700.XA patent/CN108643023B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108643023A (en) | 2018-10-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101260692B (en) | Bearing force-free anti-knock steel support system | |
| CN112443041A (en) | Assembled bolted connection beam column node | |
| CN108643023B (en) | Coal conveying trestle | |
| CN201809873U (en) | Reinforcing aseismatic beam for house | |
| CN113699884A (en) | Rectangular concrete-filled steel tube cable tower adopting prefabricated web plates | |
| CN107514076B (en) | Bearing-free steel plate shear wall only subjected to shearing force | |
| CN107023020B (en) | Horizontal internal support system of deep foundation pit assembled type combined steel structure and construction method thereof | |
| CN210713194U (en) | Rigidity-controllable assembled node structure | |
| CN215802266U (en) | Direct-insertion type bolt-free connecting joint of closed cavity column and steel beam | |
| CN206625230U (en) | Gusset form in deep basal pit assembled combination steel construction | |
| CN211646957U (en) | Assembled house ground reinforcing plate structure | |
| CN215801686U (en) | Steel support mounting system | |
| CN111005497A (en) | Assembled house ground reinforcing plate structure | |
| CN218665047U (en) | Crane beam structure after old factory building lengthening and transformation | |
| CN216075601U (en) | Assembled concrete column girder steel hybrid connection node | |
| CN215715447U (en) | Flat plate type module and flat plate type foundation | |
| CN212295341U (en) | Section steel concrete column underpinning node | |
| CN213868309U (en) | Overturn-preventing movable board house | |
| CN110904820B (en) | Horizontal restraint system of separated pier support | |
| CN214574185U (en) | Foundation pile and benchmark roof beam structure for foundation pile static test | |
| CN219638136U (en) | Wind-resistant column corner support node | |
| CN115341701B (en) | Hanging formwork construction method for high-altitude overhanging steel bar truss floor support plate | |
| CN203200913U (en) | Loop component for reinforcement steel connection columns, beams and load bearing parts | |
| CN220266283U (en) | Combined structure of trestle and power transmission framework of power plant | |
| CN216340130U (en) | Connecting joint between chord member and web member of steel truss |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |