CN217266885U

CN217266885U - Steel construction assembled landing stage convenient to integral hoisting

Info

Publication number: CN217266885U
Application number: CN202220948321.4U
Authority: CN
Inventors: 朱敏; 谢坚; 李圩; 甘宝柱
Original assignee: Anhui Zhongya Steel Structure Engineering Co ltd
Current assignee: China Building Materials Hefei Steel Structure Technology Co ltd
Priority date: 2022-04-23
Filing date: 2022-04-23
Publication date: 2022-08-23
Anticipated expiration: 2032-04-23

Abstract

The utility model relates to a steel construction landing stage technical field, more specifically say and relate to a steel construction assembled landing stage convenient to integral hoisting, including steel construction landing stage and lattice support column, steel construction landing stage includes lower chord, upper chord, steel column, purlin support, purlin, various steel sheet, pavement crossbeam, roofing crossbeam, pavement longeron and from low to high vertical web member and the diagonal web member of pin installation one by one, the steel column capital passes through high strength bolt and is connected with the upper chord, the steel column capital passes through high strength bolt and is connected with the lower chord, the purlin passes through high strength bolt and is connected with the purlin support, various steel sheet passes through self tapping screw and is connected with the purlin; the bottom ends of two sides of one steel structure trestle are connected with the top plates of two adjacent latticed support columns with different heights through one-way sliding supports; the utility model discloses reduce the pollutant emission problem of processes such as field weld, spraying paint by a wide margin, safety ring protects, and the level of assemblization is high, and the construction speed is fast.

Description

Steel construction assembled landing stage convenient to integral hoisting

Technical Field

The utility model relates to a steel construction landing stage technical field, more specifically say so and relate to a steel construction assembled landing stage convenient to integral hoisting.

Background

In industries such as building materials, coal mines, electric power and the like, the materials are conveyed to and conveyed between the materials through conveying belts. The large-scale cement production line is often jointly built with mines, power plants and the like, the distance between the plants is long, materials are conveyed through the conveying belt conveniently and efficiently, the materials in the mines, the cement plants and the power plants can be operated at high speed, the material storage space in each plant area is reduced, the energy consumption is reduced, energy and material resources are efficiently utilized, the carbon emission in production is favorably reduced, and the requirement of green production is met. While the conveyor belts carrying the transport operations are usually arranged inside the trestle.

The traditional trestle consists of trusses with the span of about 30 meters, the main load of the trusses is borne by two trusses in a plane, and the two vertical trusses are connected through steel beams and a supporting system arranged on the roof and the ground of the trestle to form a truss type trestle structure. Traditional truss-like landing stage is as last lower chord member by H shaped steel, and web member adopts double angle steel or H shaped steel, adopts welded connection between each component, and on-the-spot welding work volume is big, and need carry out paint spraying and handle, not only need set up cable or generator, still can cause serious pollution to the environment.

And, during the construction of steel construction landing stage, the landing stage bearing structure often adopts concrete frame, sets up the scaffold in the mid-span position of landing stage during the construction, divide into the multistage hoist and mount with steel construction landing stage, and one end is set up on concrete frame, and the other end is set up on the scaffold, connects multistage landing stage as an organic whole with the welding on the scaffold. The construction method of the concrete frame requires template supporting, concrete pouring and concrete curing, and has the disadvantages of complicated working procedures, long construction period and difficult concrete transportation. The scaffold is long in construction time, sectional hoisting is adopted, the requirement of a joint on a construction process is high, and the welding quality is difficult to guarantee.

SUMMERY OF THE UTILITY MODEL

To the weak point of above-mentioned prior art, the utility model provides a steel construction assembled landing stage convenient to integral hoisting reduces the pollutant emission problem of processes such as field weld, spraying paint by a wide margin, and safety ring protects, and the scene is assembled, and the level of assemblability is high, and the construction speed is fast.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:

a steel structure assembled trestle convenient for integral hoisting comprises a steel structure trestle and lattice support columns, wherein the steel structure trestle comprises a lower chord, an upper chord, a steel column, a purlin support, purlins, color steel plates, a walkway cross beam, a roof cross beam, a walkway longitudinal beam, and vertical web members and diagonal web members which are installed from low to high one by one, the top of the steel column is connected with the upper chord through a high-strength bolt, the bottom of the steel column is connected with the lower chord through a high-strength bolt, the purlins are connected with the purlin support through a high-strength bolt, and the color steel plates are connected with the purlins through self-tapping screws; and the bottom ends of two sides of the steel structure trestle are connected with the top plates of the lattice support columns with two adjacent heights and different elevations through one-way sliding supports.

Preferably, the lattice support column is the rectangular cuboid shape, the lattice support column includes chord member, horizontal pole, the oblique web member of lattice support column, column base node and capital node, the contained angle of horizontal pole and chord member is 90, the horizontal pole sets up along the chord member interval, the oblique web member of lattice support column sets up along the nodical of horizontal pole and chord member, connects through relevant welding seam between each member of lattice support column.

Preferably, the column base node includes column base stiffening rib, column base bottom plate, sill anchor and shear connection key, column base bottom plate and chord member bottom welded connection, the screw that is used for connecting the sill anchor is arranged to column base bottom plate annular, column base stiffening rib side and chord member side welded connection, column base stiffening rib bottom surface and column base bottom plate top surface welded connection, the shear connection key top surface welds in the middle of column base bottom plate bottom surface, and sill anchor and shear connection key are buried in the concrete foundation, fix with the concrete.

Preferably, the capital node includes node roof, node bottom plate, riser and stiffening rib, chord member buckle back and node bottom plate bottom surface welded connection, riser and node roof, node bottom plate welded connection, two respectively are arranged to the stiffening rib under steel construction landing stage column base node, stiffening rib and node roof, node bottom plate welded connection.

Preferably, four parallel risers are evenly arranged between node roof and node bottom plate, and 50mm margin is left with the limit end of node roof, node bottom plate to the outside riser.

The utility model has the advantages that:

1) the utility model discloses except that one-way sliding support need pass through welded mounting on the lattice support column, all the other welded connection's part can weld before dispatching from the factory and accomplish, and the rest is whole to adopt high-strength bolted connection, avoids pulling at the desolate and useless field work scene and establishes supporting facilities such as required electric wire of welding or generator, reduces the pollutant emission problem of processes such as field welding, spray paint by a wide margin, and safety ring protects, accords with the requirement that building materials trade green production, low carbon discharged.

2) After the components are connected by high-strength bolts, the components are matched with each other only by a crane on site, workers can install the components by using a torque wrench, the components are assembled on site, the assembly degree is high, and the construction speed is high.

3) The utility model can divide truss trestles with different spans according to the total conveying length of the trestle, and realizes the free combination of trestles with different spans; in the whole period of the project, only site condition rechecking, design rechecking, factory processing and field installation are needed, so that standardized operation in the whole length range of trestle conveying is realized, and the trestle conveying system can adapt to various site conditions.

4) The utility model discloses be convenient for adopt whole hoist and mount, need not the segmentation and set up the scaffold frame, simplified construction process, shortened the time limit for a project, practiced thrift the cost.

5) A structural analysis software is adopted to perform linear elasticity and nonlinear analysis on a 30-meter span and 3.6-meter wide steel structure trestle, and an analysis result shows that the trestle has excellent structural performance, the deflection under the design load is far smaller than a standard limit value, the ductility of a structural load-displacement curve is good, and the trestle has good overall rigidity and earthquake resistance.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural diagram of a steel trestle;

FIG. 3 is a schematic view of the structure at A-A in FIG. 2;

FIG. 4 is a schematic view of the structure at B-B in FIG. 2;

FIG. 5 is a schematic view of a lattice support column;

FIG. 6 is a schematic structural view of a column base node;

FIG. 7 is a schematic structural diagram of a column-top node;

FIG. 8 is a schematic view of the structure at C-C in FIG. 7;

FIG. 9 is a schematic view of the structure of FIG. 7 at D-D;

FIG. 10 is a schematic structural view of the connection of the unidirectional sliding support and the lattice support column;

FIG. 11 is a schematic structural view of a trestle with two steel structures after being installed;

FIG. 12 is a schematic view of the arrangement of the deflection measuring points according to the calculation result of the present invention;

FIG. 13 is a deflection distribution diagram of a trestle under the basic load combination of the utility model;

FIG. 14 is a schematic view of the numbering of the support according to the present invention;

fig. 15 is a reverse force diagram of the lower trestle support of the basic load combination designed by the utility model;

fig. 16 is a schematic view of the number of the lower chord of the mid-span part of the calculation result of the present invention;

fig. 17 is a non-linear calculation trestle support reverse force diagram of the present invention;

fig. 18 is a graph of nonlinear calculation trestle support reaction force-deflection curve of the present invention;

in the drawings, the reference numerals designate the following components:

200-lattice support column, 201-chord, 202-cross bar, 203-lattice support column diagonal web member, 204-column base node, 205-column top node, 206-column base stiffening rib, 207-column base bottom plate, 208-anchor bolt, 209-shear connection key, 210-node top plate, 211-node bottom plate, 212-riser, 213-stiffening rib, 300-one-way sliding support, 400-steel structure trestle, 401-lower chord, 402-upper chord, 403-vertical web member, 404-diagonal web member, 405-steel column, 406-purlin support, 407-purlin, 408-color steel plate, 409-walkway cross member, 410-roofing cross member, 411-walkway longitudinal member.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1-4, a steel structure fabricated trestle convenient for integral hoisting comprises a steel structure trestle 400 and lattice support columns 200, wherein the steel structure trestle 400 comprises a lower chord 401, an upper chord 402, a steel column 405, a purlin support 406, purlins 407, color steel plates 408, a walkway cross beam 409, a roof cross beam 410, a walkway longitudinal beam 411, vertical web members 403 and diagonal web members 404 which are installed from low to high in a one-by-one manner, the top of the steel column 405 is connected with the upper chord 402 through high-strength bolts, the bottom of the steel column 405 is connected with the lower chord 401 through high-strength bolts, the purlins 407 are connected with the purlin support 406 through high-strength bolts, and the color steel plates 408 are connected with the purlins 407 through self-tapping screws; the bottom ends of two sides of a steel trestle 400 are connected with the top plates of two adjacent lattice support columns 200 with different heights through one-way sliding supports 300.

After being processed from a processing plant, each component of the steel structure trestle 400 is operated to a construction site, and is installed on a special assembly jig frame by high-strength bolts according to the following sequence: the top and the bottom of a steel column 405 on one side are respectively connected with an upper chord 402 and a lower chord 401 through high-strength bolts, a vertical web member 403 and an oblique web member 404 which are close to the steel column 405 are installed step by step, and the upper chord 402, the lower chord 401, the vertical web member 403 and the oblique web member 404 are installed step by step from one side to the other side until the steel column on the other side is installed; after the main structure of the steel structure trestle 400 is assembled, the purlines 407 and the screw holes of the purline brackets 406 are aligned and fixed by high-strength bolts, and the color steel plates 408 and the purlines 407 are connected and fixed by self-tapping screws.

Wherein, lattice support column 200 is the rectangular cuboid shape, and the lattice support column includes chord member 201, horizontal pole 202, the oblique web member 203 of lattice support column, column base node 204 and capital node 205, and the contained angle of horizontal pole 202 and chord member 201 is 90, and horizontal pole 202 sets up along chord member 201 interval, and the oblique web member 203 of lattice support column sets up along the intersect of horizontal pole 202 and chord member 201.

The column base node 204 comprises a column base stiffening rib 206, a column base bottom plate 207, a foundation bolt 208 and a shear connection key 209, the column base bottom plate 207 is connected with the bottom of the chord member 201 in a welding mode, a screw hole used for being connected with the foundation bolt 208 is annularly arranged on the column base bottom plate 207, the side face of the column base stiffening rib 206 is connected with the side face of the chord member 201 in a welding mode, the bottom face of the column base stiffening rib 206 is connected with the top face of the column base bottom plate 207 in a welding mode, and the top face of the shear connection key 209 is welded in the middle of the bottom face 207 of the column base bottom plate.

Wherein, capital node 205 includes node roof 210, node bottom plate 211, riser 212 and stiffening rib 213, chord 201 after buckling with node bottom plate 211 bottom surface welded connection, riser 212 and node roof 210, node bottom plate 211 welded connection, stiffening rib 213 and node roof 210, node bottom plate 211 welded connection.

Wherein, four parallel risers 212 evenly arrange between node roof 210 and node bottom plate 211, and the limit end of outermost side riser 212 and node roof 210, node bottom plate 211 leaves 50mm margin.

The utility model discloses a theory of operation and working method are: each component of the steel structure trestle 400 is connected by high-strength bolts on the jig frame, and the whole installation sequence is as follows: installing from low to high; the hoisting equipment respectively hoists two lattice support columns 200 with different elevations to the foundation of the respective lattice support column 200, aligns the bolt hole of the column foot bottom plate of the lattice support column 200 with the embedded part, and screws the bolt to fix the lattice support column 200; hoisting the unidirectional sliding support 300 to the top surface of the first cross-low-elevation lattice support column 200 by using the hoisting equipment 100, wherein the sliding direction of the unidirectional sliding support 300 is consistent with the span direction of the fabricated trestle, accurately lofting the position of the unidirectional sliding support 300 by using a total station, and then welding the bottom plate of the unidirectional sliding support 300 with the top plate of the first cross-low-elevation lattice support column 200 by using an electric welding machine; hoisting equipment hoists the assembled steel structure trestle 400 to the top surface of the first span-height and low-height lattice support column 200, wherein the number of the hoisting equipment, the arrangement position of the lifting hook and the number of the lifting hook are determined according to the weight and the site condition of the steel structure trestle 400; while the first steel-structure-spanning trestle 400 is installed, the one-way sliding support 300 for the second steel-structure-spanning trestle 400 is installed on the top surface of the high-elevation lattice support column 200 of the first steel-structure-spanning trestle 400; and sequentially installing a second cross steel structure trestle 400 and a third cross steel structure trestle 400 … … according to the construction process of installing the first cross steel structure trestle 400 until the construction of the trestle is completed.

Adopt structural analysis software right the utility model discloses a steel construction landing stage that a pin 30 meters strides, 3.6 meters are wide has carried out line elasticity and nonlinear analysis, and the analysis result shows that landing stage structural performance is good, and the amount of deflection is far less than the standard limit value under the design load, and structural load-displacement curve ductility is better, and the landing stage has better bulk rigidity and anti-seismic performance.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a steel construction assembled landing stage convenient to integral hoisting which characterized in that: the steel structure trestle comprises a steel structure trestle (400) and lattice support columns (200), wherein the steel structure trestle (400) comprises a lower chord (401), an upper chord (402), a steel column (405), a purlin support (406), purlins (407), a color steel plate (408), a walkway cross beam (409), a roof cross beam (410), a walkway longitudinal beam (411), and vertical web members (403) and diagonal web members (404) which are installed from low to high one by one, the top of the steel column (405) is connected with the upper chord (402) through high-strength bolts, the bottom of the steel column (405) is connected with the lower chord (401) through high-strength bolts, the purlins (407) are connected with the purlin support (406) through high-strength bolts, and the color steel plate (408) is connected with the purlins (407) through self-tapping screws; the bottom ends of two sides of the steel structure trestle (400) are connected with the top plates of two adjacent lattice support columns (200) with different elevations through one-way sliding supports (300).

2. The steel structure fabricated trestle convenient to integral hoisting of claim 1, characterized in that: lattice support column (200) are the rectangular cuboid shape, the lattice support column includes chord member (201), horizontal pole (202), oblique web member of lattice support column (203), column base node (204) and capital node (205), the contained angle of horizontal pole (202) and chord member (201) is 90, chord member (201) interval setting is followed in horizontal pole (202), the crossing point setting of horizontal pole (202) and chord member (201) is followed in oblique web member of lattice support column (203).

3. The steel structure fabricated trestle convenient to integral hoisting of claim 2, characterized in that: column base node (204) are including column base stiffening rib (206), column base bottom plate (207), anchor bolt (208) and shear connection key (209), column base bottom plate (207) and chord member (201) bottom welded connection, the screw that is used for connecting anchor bolt (208) has been arranged to column base bottom plate (207) ring shape, column base stiffening rib (206) side and chord member (201) side welded connection, column base stiffening rib (206) bottom surface and column base bottom plate (207) top surface welded connection, shear connection key (209) top surface welds in the middle of column base bottom plate (207) bottom surface.

4. The steel structure fabricated trestle convenient to integral hoisting of claim 2, characterized in that: post top node (205) include node roof (210), node bottom plate (211), riser (212) and stiffening rib (213), chord member (201) buckle after with node bottom plate (211) bottom surface welded connection, riser (212) and node roof (210), node bottom plate (211) welded connection, stiffening rib (213) and node roof (210), node bottom plate (211) welded connection.

5. The steel structure fabricated trestle convenient to integral hoisting of claim 4, wherein: four parallel risers (212) evenly arrange between node roof (210) and node bottom plate (211), and 50mm margin is left to the limit end of outermost side riser (212) and node roof (210), node bottom plate (211).