CN112376776A - Assembled roof with partially-wrapped composite beam and construction method thereof - Google Patents
Assembled roof with partially-wrapped composite beam and construction method thereof Download PDFInfo
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- CN112376776A CN112376776A CN202011167698.8A CN202011167698A CN112376776A CN 112376776 A CN112376776 A CN 112376776A CN 202011167698 A CN202011167698 A CN 202011167698A CN 112376776 A CN112376776 A CN 112376776A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B7/00—Roofs; Roof construction with regard to insulation
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B7/00—Roofs; Roof construction with regard to insulation
- E04B7/02—Roofs; Roof construction with regard to insulation with plane sloping surfaces, e.g. saddle roofs
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B7/00—Roofs; Roof construction with regard to insulation
- E04B7/02—Roofs; Roof construction with regard to insulation with plane sloping surfaces, e.g. saddle roofs
- E04B7/06—Constructions of roof intersections or hipped ends
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- Electromagnetism (AREA)
- Civil Engineering (AREA)
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Abstract
The invention discloses an assembled roof with a partially-wrapped composite beam, which is characterized in that: the fabricated roof comprises a partially-coated composite beam which is a bilaterally-symmetrical folded beam, a simple support is arranged at the top of a frame column, a rigid tie bar is perpendicular to the partially-coated composite beam and is arranged at a roof slope, a roof ridge and a wind-resistant column, a horizontal support is arranged in two spans at the end part, the partially-coated composite beam is connected with the wind-resistant column through a spring plate, and the partially-coated composite beam is welded and connected with the rigid tie bar through a gusset plate. The assembled roof is suitable for a large-span roof structure, wherein the composite beam is partially coated in the assembled roof, is prefabricated in a factory and hoisted on site, compared with a pure steel beam, the anti-corrosion fireproof coating on the inner sides of a steel web and a flange is omitted, the coated concrete can prevent the local buckling of the web and the local buckling of the flange towards the inner side, and the bending rigidity of the composite beam is increased.
Description
Technical Field
The invention relates to a large-span fabricated combined structure roof in the civil construction industry, in particular to a fabricated roof with a partially-wrapped combined beam and a construction method thereof.
Background
In industrial buildings, large equipment is usually arranged in the buildings due to the process production requirements, and indoor shielding by structural members is required, so that the distance between structural columns is increased, and when a common reinforced concrete beam is selected, the section height is large and uneconomical in order to meet the requirements of bearing and deformation. At the moment, the roof with the steel beam combined with the horizontal support is provided with a purlin system, and the roof is a more conventional structure type selection. However, the special production process inside some buildings will bring about a relatively harsh indoor environment, such as: the anticorrosion treatment of the steel structural member is an important link in design and construction, the anticorrosion paint is required to be brushed with fireproof paint, the design service life of the paint is far shorter than that of a building, and operators need to repair and replace the paint regularly to ensure the durability of the structural member.
On the other hand, the section of the steel beam is increased along with the increase of the span, and the combined beam can be applied to the condition of larger span under the condition of keeping the section height unchanged by coating the steel beam with concrete.
Disclosure of Invention
The invention aims to provide an assembled roof with a partially-wrapped composite beam and a construction method thereof.
In order to solve the technical problem, the invention is solved by the following technical scheme:
an assembled roof with a partially clad composite beam, characterized in that: the assembled roof comprises a partially-coated composite beam, a rigid tie bar, a horizontal support, a roof purline, a straight pull bar, a diagonal tie bar, a support bar, a corner support and a roof panel, wherein the partially-coated composite beam is a bilaterally-symmetrical folded beam, the rigid tie bar is simply arranged at the top of a frame column, is perpendicular to the partially-coated composite beam and is arranged at a roof slope, a roof and a wind-resistant column, the horizontal support is arranged in two spans at the end part, the partially-coated composite beam is connected with the wind-resistant column through a spring plate, and the partially-coated composite beam is welded with the rigid tie bar through a node plate.
Furthermore, the partially-coated composite beam comprises an I-beam, coating concrete is arranged in a concave part between an upper flange and a lower flange on two sides of a web plate of the I-beam, when the partially-coated composite beam is manufactured in a factory, concrete on one side is poured firstly, after the concrete on the side reaches the design allowable strength, the component is turned over, and concrete on the other side is poured.
Further, the coating concrete is common concrete or light aggregate concrete or recycled aggregate concrete.
Furthermore, the partially-coated composite beam is composed of a left partially-coated composite beam and a right partially-coated composite beam, stiffening plates are arranged at two ends of the left partially-coated composite beam and the right partially-coated composite beam, the end parts of the left partially-coated composite beam and the right partially-coated composite beam are connected with the support through the stiffening plates, the left partially-coated composite beam and the right partially-coated composite beam are connected at the junction of the midspan nodes through the stiffening plates, and the concrete coated on the stiffening plates is poured after the main roof components are installed.
Furthermore, the coated concrete is provided with longitudinal steel bars, waist bars and stirrups, wherein the longitudinal steel bars and the waist bars are welded with the stiffening plates at the end parts.
Furthermore, the rigid tie bar adopts a round steel pipe or an I-shaped steel or an H-shaped steel or a rectangular steel pipe.
Furthermore, the fabricated roof further comprises a roof purline positioned above the partially-coated composite beam, a corner brace arranged between the partially-coated composite beam and the roof purline, and a roof panel positioned above the roof purline, wherein the roof purline is made of C-shaped steel or I-shaped steel or H-shaped steel or channel steel, the corner brace is made of angle steel or channel steel, and the roof panel is made of sandwich color steel plates or profiled steel plates or lightweight concrete strip-shaped plates.
Further, the construction method on site sequentially comprises the following steps:
a. before construction, partially-clad composite beams and other steel members are inspected in detail;
b. after the construction of the lower reinforced concrete frame is finished and the concrete is cured to the designed strength, the construction of the roof composite beam is started, the left and right sections of partially-coated composite beams are connected into an integral folded beam on the ground through high-strength bolts, the bolts are sequentially screwed from the center to the two sides at the connection position of the beam sections to ensure that the beam sections are stressed uniformly, and the bolts are screwed again in the original sequence to ensure that the bolt connection is firm;
c. installing part of the cladding composite beams from the two ends of the roof to the middle in sequence, determining a reasonable hoisting point position and selecting a hoisting tool according to the weight of a single component of the composite beam, and hoisting the part of the cladding composite beams in place to connect the part of the cladding composite beams with the reinforced concrete columns at the supports;
d. after each two adjacent roof combined beams are installed, all horizontal supports, rigid tie bars, roof purlines, corner supports, braces and the like are installed, the installation positions are measured and corrected, the installation deviation is controlled within a standard allowable range, and permanent fixation is carried out immediately after correction;
e. after the main roof components are installed and adjusted, the roof panel is installed.
The assembled roof with the partially-coated composite beam is suitable for a large-span roof structure system, wherein the partially-coated composite beam is prefabricated in a factory and hoisted on site.
Drawings
FIG. 1 is a plan view of an assembled roof with partially clad composite beams.
Fig. 2 is a view of an arrangement of fabricated roof purlins with partially clad composite beams.
FIG. 3 is a side elevational view of a partially clad composite beam.
Fig. 4 is a detailed view of a partially clad composite beam support.
FIG. 5 is a detailed view of a mid-span joint of a partially clad composite beam.
FIG. 6 is a connection diagram of a partially clad composite beam and a wind-resistant column.
Fig. 7 is a view of the connection of the partially clad composite beam with the rigid tie bar.
Fig. 8 is a sectional view taken along line a-a of fig. 7.
Fig. 9 is a sectional view taken along line b-b of fig. 7.
Fig. 10 is a cross-sectional view of c-c of fig. 7.
FIG. 11 is a view of a partially clad composite beam and a gusset connection.
Fig. 12 is a cross-sectional view of d-d of fig. 11.
The reference numbers are as follows:
1-partially-coated composite beam, 2-rigid tie rod, 3-horizontal support, 4-roof purline, 5-straight tie bar, 6-diagonal tie bar, 7-brace bar, 8-angle brace, 9-windproof column, 10-stiffening plate, 11-support, 12-spring plate, 13-embedded plate, 14-bolt, 15-gable column, 16-embedded steel plate, 17-angle steel and 18-end plate.
Detailed Description
The invention will now be described in further detail with reference to the following examples and figures 1 to 9:
an assembled roof with a partially-wrapped composite beam and a construction method thereof are characterized in that: the assembled roof comprises a partially-coated composite beam 1, a rigid tie bar 2, a horizontal support 3, a roof purline 4, a straight tie bar 5, a diagonal tie bar 6, a stay bar 7, a corner brace 8 and a roof panel, wherein the partially-coated composite beam 1 is a bilaterally symmetrical folded beam and simply arranged at a support at the top of a frame column, the rigid tie bar 2 is perpendicular to the partially-coated composite beam 1 and arranged at a slope rising part of a roof, a ridge and a wind-resistant column, the horizontal support 3 is arranged in two spans at the end part, and the partially-coated composite beam 1 is connected with the wind-resistant column 9 through a spring plate and is connected with the rigid tie bar 2 through a node plate in a welding manner.
The partially-coated composite beam comprises an I-shaped beam, wherein the concave part between the upper flange and the lower flange on two sides of a web plate of the I-shaped beam is internally provided with coated concrete, when the partially-coated composite beam is manufactured in a factory, the concrete on one side is poured firstly, and after the concrete on the side reaches the design allowable strength, the member is turned over, and the concrete on the other side is poured. The concave part can be partially coated with concrete or completely coated with concrete, and only the connecting part needing to be welded at the later stage is left.
The coating concrete adopts common concrete or light aggregate concrete or recycled aggregate concrete.
As shown in fig. 3 to 5, stiffening plates are arranged at two ends of the left and right sections of partially-coated composite beams, the left and right sections of partially-coated composite beams are connected with the reinforced concrete columns at the supports through the stiffening plates, the left and right sections of partially-coated composite beams are connected at the joints of midspan nodes through the stiffening plates, and the coating concrete at the stiffening plates is poured after the main roof components are installed. The clad concrete is provided with longitudinal steel bars, waist bars and stirrups, wherein the longitudinal steel bars and the waist bars are welded with the stiffening plates at the end parts.
As shown in fig. 6, an embedded plate 13 and a bolt 14 are embedded in the gable 15 of the wind-resistant column, one end of the spring plate 12 is connected to the top of the partially-coated composite beam 1, and the other end is fixed to the embedded plate 13 of the gable of the wind-resistant column.
As shown in fig. 7 to 10, the partially-coated composite beam 1 and the rigid tie bar 2 are welded together through a gusset plate, the rigid tie bar is made of circular steel tubes, the gusset plate is embedded in the coated concrete, the gusset plate comprises an embedded steel plate 16 and angle steel 17 vertically connected with the embedded steel plate, the embedded steel plate 16 is positioned on the surface of the coated concrete, and the angle steel 17 extends into the coated concrete. The rigid tie bar 2 is externally sleeved with a connecting sleeve, the end part of the connecting sleeve is provided with an end sealing plate 18, the connecting sleeve is welded outside the rigid tie bar 2, and the end sealing plate is welded on an embedded steel plate 16 of the gusset plate, so that the connection between the partially-coated composite beam 1 and the rigid tie bar 2 is realized. H in the figurefIs the leg size of the weld.
As shown in fig. 11 to 12, the roof purline 4 is made of C-shaped steel or i-shaped steel or H-shaped steel or channel steel, a connecting plate is welded on the partially clad composite beam 1, the roof purline 4 is connected with the connecting plate through a bolt, a corner brace 8 is arranged between the lower part of the partially clad composite beam 1 and the roof purline 4, the corner brace 8 is made of angle steel, the lower end of the corner brace 8 is connected with an embedded connecting piece at the lower part of the partially clad composite beam 1, and the upper end of the corner brace 8 is connected with the roof purline 4 through a bolt.
The roof plate is a sandwich color steel plate or a profiled steel plate or a light concrete strip-shaped plate.
The construction method on site sequentially comprises the following steps:
a. before construction, the appearance size, the bolt hole position and the diameter of a part of the clad composite beam and other steel components, the position of a connecting piece, a welding seam, friction surface treatment and an anticorrosive coating are checked in detail, and deformation, defects and damage of the components need to be corrected and repaired on site until the components are qualified. Cleaning various impurities such as oil stains, mud and sand on the surface of the component.
b. After the construction of the lower reinforced concrete frame is completed and the concrete is cured to the designed strength, the construction of the roof composite beam is started, the left and right sections of partially-coated composite beams are connected into an integral folded beam on the ground through high-strength bolts, the bolts are sequentially screwed from the center to the two sides at the connection position of the beam sections to ensure that the beam sections are uniformly stressed, and the bolts are screwed again in the original sequence to ensure that the bolt connection is firm.
c. The installation sequence of the partially-coated composite beam is from two ends to the middle of the roof, a reasonable lifting point position and a selected lifting appliance are determined according to the weight of a single component of the composite beam, and the lifting point of the lifting construction is installed and checked to ensure the lifting safety when necessary. And hoisting the combined beam in place to connect the combined beam with the reinforced concrete column at the support. In the installation process, necessary measures such as traction, support and temporary connection are adopted to ensure the lateral stability of the composite beam.
d. After each two adjacent roof composite beams are installed, all horizontal supports, rigid tie bars, roof purlines, corner supports, bracing strips and the like are installed between the two adjacent roof composite beams, the installation positions are measured and corrected, the installation deviation is controlled within a specification allowable range, and permanent fixation is carried out immediately after correction.
e. After the main roof components are installed and adjusted, the roof panel is installed.
Examples
A single-layer industrial factory building is characterized in that the transverse span is 18 meters, the column distance is 8 meters, the frame column tops are 13 meters away from the ground, an assembled roof with partially-coated composite beams is adopted, the roof structure is arranged as shown in figure 1, roof purlines are arranged as shown in figure 2, the roof partially-coated composite beams are sloped from the ridge to two sides by 5%, the steel sections of the composite beams are rolled HN700 multiplied by 300 multiplied by 13 multiplied by 24, as shown in figure 3, the beam combination support and the mid-span node are respectively shown in figures 4 and 5, the connection of the composite beams and wind-resistant columns is shown in figure 6, the rigid tie rods are round steel tubes ∅ 127 multiplied by 6, and the connection with the partially-coated composite beams is shown in figures 7-10. The angle steel L100 is multiplied by 6 for the horizontal support of the roof, the C-shaped steel C280 is multiplied by 70 by 20 by 3 for the purline of the roof, the ∅ 12 round steel double-layer arrangement is adopted for the vertical pulling strip, the ∅ 16 round steel double-layer arrangement is adopted for the diagonal pulling strip, the ∅ 12 round steel and ∅ 32 is multiplied by 2 steel sleeve double-layer arrangement is adopted for the stay bar, the angle steel L63 is multiplied by 5 is adopted for the corner support, and the connection method of the angle steel L63 and the partially-coated combined beam is shown in figures 11-. Except that the steel section of the combined beam is Q345-grade steel, the other steel components are Q235-grade steel. The coating concrete adopts lightweight aggregate concrete grade LC20, density grade 1300, the density is considered according to 1450 kg per cubic meter, 2 reinforcing steel bars with 14 mm diameter are respectively arranged at the upper and lower parts of each side in the coating concrete, 4 waist bars with 12 mm diameter are arranged in the middle of each side, stirrups are correspondingly arranged, the diameter is 8 mm, the distance between the stirrups is 200 mm, and the distance between the stirrups in the encryption area is 100 mm.
The partial cladding composite beam is separated by local stiffening plates at the support, two sides of the joint of the midspan node are separated by the stiffening plates, and the cladding concrete at the joint is poured after the main roof component is installed. The roof is made of a 75-thick sandwich color steel plate, and the inside and the outside are made of color coating steel with the thickness of 0.6 mm.
The drawings and examples are only for illustrating the preferred embodiment of the present invention and are not to be construed as limiting the scope of the present invention, and those skilled in the art can make general changes, substitutions and modifications within the spirit and scope of the present invention.
Claims (8)
1. An assembled roof with a partially clad composite beam, characterized in that: the fabricated roof comprises a partially-coated composite beam which is a bilaterally-symmetrical folded beam, a simple support is arranged at the top of a frame column, a rigid tie bar is perpendicular to the partially-coated composite beam and is arranged at a roof slope, a roof ridge and a wind-resistant column, a horizontal support is arranged in two spans at the end part, the partially-coated composite beam is connected with the wind-resistant column through a spring plate, and the partially-coated composite beam is welded and connected with the rigid tie bar through a gusset plate.
2. The fabricated roof with partially clad composite beam as claimed in claim 1, wherein: the partially-coated composite beam comprises an I-shaped beam, coating concrete is arranged in a concave part between an upper flange and a lower flange at two sides of a web plate of the I-shaped beam, when the partially-coated composite beam is manufactured in a factory, the concrete at one side is poured firstly, after the concrete at the side reaches the design allowable strength, the member is turned over, and the concrete at the other side is poured.
3. The fabricated roof with partially clad composite beam as claimed in claim 2, wherein: the coating concrete adopts common concrete or light aggregate concrete or recycled aggregate concrete.
4. The fabricated roof with partially clad composite beam as claimed in claim 1, wherein: the two ends of the left and right sections of partially-coated composite beams are both provided with stiffening plates, the left and right sections of partially-coated composite beams are connected with the support through the stiffening plates, the left and right sections of partially-coated composite beams are connected at the junction of the mid-span nodes through the stiffening plates, and the stiffening plates are coated with concrete and poured after the main roof components are installed.
5. The fabricated roof with partially clad composite beam as claimed in claim 1, wherein: the coated concrete is provided with longitudinal steel bars, waist bars and stirrups, wherein the longitudinal steel bars and the waist bars are welded with the stiffening plates at the end parts.
6. The fabricated roof with partially clad composite beam as claimed in claim 1, wherein: the rigid tie bar is made of round steel pipes or I-shaped steel or H-shaped steel or rectangular steel pipes.
7. The fabricated roof with partially clad composite beam as claimed in claim 1, wherein: the assembled roof further comprises a roof purline positioned above the partially-coated composite beam, a corner brace arranged between the partially-coated composite beam and the roof purline, and a roof panel positioned above the roof purline, wherein the roof purline is made of C-shaped steel or I-shaped steel or H-shaped steel or channel steel, the corner brace is made of angle steel or channel steel, and the roof panel is made of sandwich color steel plates or profiled steel plates or lightweight concrete strip-shaped plates.
8. The fabricated roof with partially clad composite beam as claimed in claim 1, wherein: the construction method of the site sequentially comprises the following steps:
a. before construction, partially-clad composite beams and other steel members are inspected in detail;
b. after the construction of the lower reinforced concrete frame is finished and the concrete is cured to the designed strength, the construction of the roof composite beam is started, the left and right sections of partially-coated composite beams are connected into an integral folded beam on the ground through high-strength bolts, the bolts are sequentially screwed from the center to the two sides at the connection position of the beam sections to ensure that the beam sections are stressed uniformly, and the bolts are screwed again in the original sequence to ensure that the bolt connection is firm;
c. installing part of the cladding composite beams from the two ends of the roof to the middle in sequence, determining a reasonable hoisting point position and selecting a hoisting tool according to the weight of a single component of the composite beam, and hoisting the part of the cladding composite beams in place to connect the part of the cladding composite beams with the reinforced concrete columns at the supports;
d. after each two adjacent roof combined beams are installed, all horizontal supports, rigid tie bars, roof purlines, corner supports, braces and the like are installed, the installation positions are measured and corrected, the installation deviation is controlled within a standard allowable range, and permanent fixation is carried out immediately after correction;
e. after the main roof components are installed and adjusted, the roof panel is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011167698.8A CN112376776A (en) | 2020-10-27 | 2020-10-27 | Assembled roof with partially-wrapped composite beam and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011167698.8A CN112376776A (en) | 2020-10-27 | 2020-10-27 | Assembled roof with partially-wrapped composite beam and construction method thereof |
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| Publication Number | Publication Date |
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| CN112376776A true CN112376776A (en) | 2021-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011167698.8A Pending CN112376776A (en) | 2020-10-27 | 2020-10-27 | Assembled roof with partially-wrapped composite beam and construction method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112942569A (en) * | 2021-04-16 | 2021-06-11 | 中国电建集团福建省电力勘测设计院有限公司 | Detachable connecting joint of steel beam and reinforced concrete column |
| CN113638504A (en) * | 2021-07-26 | 2021-11-12 | 中国能源建设集团广东省电力设计研究院有限公司 | Rigid connection method and connection structure of roof solid-web steel beam and concrete column |
-
2020
- 2020-10-27 CN CN202011167698.8A patent/CN112376776A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112942569A (en) * | 2021-04-16 | 2021-06-11 | 中国电建集团福建省电力勘测设计院有限公司 | Detachable connecting joint of steel beam and reinforced concrete column |
| CN113638504A (en) * | 2021-07-26 | 2021-11-12 | 中国能源建设集团广东省电力设计研究院有限公司 | Rigid connection method and connection structure of roof solid-web steel beam and concrete column |
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