CN109505242B - Superimposed beam for temporary covering system - Google Patents
Superimposed beam for temporary covering system Download PDFInfo
- Publication number
- CN109505242B CN109505242B CN201811324083.4A CN201811324083A CN109505242B CN 109505242 B CN109505242 B CN 109505242B CN 201811324083 A CN201811324083 A CN 201811324083A CN 109505242 B CN109505242 B CN 109505242B
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- Prior art keywords
- concrete layer
- sleeve
- metal cross
- metal
- sections
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- 239000002184 metal Substances 0.000 claims abstract description 64
- 229910052751 metal Inorganic materials 0.000 claims abstract description 64
- 238000000034 method Methods 0.000 claims abstract description 6
- 230000007423 decrease Effects 0.000 claims abstract description 4
- 238000010276 construction Methods 0.000 claims description 16
- 239000002131 composite material Substances 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 210000002435 tendon Anatomy 0.000 description 1
Classifications
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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
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/02—Bridges characterised by the cross-section of their bearing spanning structure of the I-girder type
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a laminated beam for a temporary decking system, comprising: the height of the metal cross beam gradually decreases from the middle part of the metal cross beam to the two ends; the metal beam comprises a plurality of beam sections which are connected in a straight shape in sequence, the heights of the two ends of the beam sections are inconsistent, and a connecting assembly for connecting the adjacent beam sections is arranged between the beam sections; the concrete layer is poured and arranged on the metal cross beam, and an easily-detachable component used for connecting the metal cross beam with the concrete layer is arranged between the metal cross beam and the concrete layer. The invention also discloses an installation method and a dismantling method of the laminated beam. The superposed beam has adjustable span, strong integrity and recoverable materials, and increases the practicability of the temporary covering system.
Description
Technical Field
The invention belongs to the technical field of temporary covering, and particularly relates to a heightened spliced reusable laminated beam and an installation method thereof.
Background
Subway construction is mostly underground engineering, lines are mostly arranged below urban main roads, and stations are mostly selected at level crossing points with convenient traffic. However, along with the construction of subway stations, traffic diversion during construction often causes great pressure on the passage of cities. The construction period of the station main body construction engineering is often longer, and the temporary covering system is adopted at this time to become a conventional method for reducing the urban road traffic pressure. The temporary covering system is mainly a comprehensive system which adopts temporary columns to combine with traffic lane boards, and is mainly used for guaranteeing the traffic capacity of urban roads.
The main forms of the current temporary covering system are a concrete cover plate and a army beam, wherein the concrete cover plate has the following problems: 1. the concrete cover plate is generally matched with corresponding transverse and longitudinal beams, the maximum width is generally not more than 10m, and middle upright posts are added for stations needing to be paved integrally. The middle vertical column has larger influence on station construction; 2. the concrete cover plate is adopted, the later-stage breaking range is large, a large amount of concrete is needed, and the waste is serious.
If the whole station needs to be covered, army beams are generally adopted. The following problems still remain: 1. the army beam is formed by splicing a plurality of roof trusses, and has poor integrity; 2. because the army beam can not directly drive a vehicle or perform asphalt pouring, a concrete cast-in-situ layer is additionally arranged at the upper part, so that army Liang Hezai is increased; 3. for a large-span structure, the vertical rigidity of the army beam is poor, so that the road surface driving comfort level is poor; 4. the army stool beam adopts a modular structure, and the height cannot be increased along with the increase of the span, so that the span is limited.
Disclosure of Invention
The invention aims to provide a superposed beam for a temporary covering system, which solves the technical problems that a concrete cover plate in the current temporary covering system needs to be added with a middle upright post and needs a large amount of concrete, and the military beam has poor integrity, overlarge load and limited span.
In order to solve the problems, the invention is realized according to the following technical scheme:
A composite beam for a temporary decking system, comprising: the height of the metal cross beam gradually decreases from the middle part of the metal cross beam to the two ends; the metal beam comprises a plurality of beam sections which are connected in a straight shape in sequence, the heights of the two ends of the beam sections are inconsistent, and a connecting assembly for connecting the adjacent beam sections is arranged between the beam sections;
The concrete layer is poured and arranged on the metal cross beam, and an easily-detachable component used for connecting the metal cross beam with the concrete layer is arranged between the metal cross beam and the concrete layer.
Compared with the prior art, the invention forms the metal cross beam through the plurality of cross beam sections, and the length of the metal cross beam can be changed by adjusting the number of the cross beam sections, so that the span of the superposed beam can be adjusted. The heights of the two ends of the beam sections are inconsistent, and the metal beam can be formed by selecting the beam sections with corresponding quantity and specific height, so that the height of the metal beam gradually increases from the two ends to the middle, and the problem that the height of the superposed beam must be increased along with the span increase can be effectively solved. The composite beam is formed by combining the metal cross beam and the concrete, so that the integrity of the composite beam is improved, the vertical rigidity is good, the use of the concrete is reduced, and meanwhile, the load of the composite beam is also reduced. The metal beam and the concrete layer are connected through the easy-to-disassemble assembly, so that the stability between the metal beam and the concrete layer is enhanced, and the beam section can be recycled by disassembling the easy-to-disassemble assembly and the concrete layer after the use of the laminated beam is completed.
Further, the connecting assembly comprises a plurality of first through holes arranged on the beam section and a connecting plate provided with second through holes corresponding to the first through holes, and a fastening assembly is connected between the first through holes and the second through holes in series.
Further, the beam section is a steel plate with an I-shaped cross section, and comprises a web plate, a top plate arranged at the top end of the web plate and a bottom plate arranged at the bottom end of the web plate; the top plate is horizontally arranged, and the bottom plate is provided with an inclined or bent section.
Further, the easy-to-disassemble and assemble assembly comprises a sleeve and a bolt, wherein the bolt is detachably arranged on the metal cross beam, the sleeve is arranged on the concrete layer, and the sleeve is in threaded connection with the bolt.
Further, one end of the sleeve in the concrete layer is provided with an anchor bar, and the anchor bar is convexly arranged on the outer side face of the sleeve.
Further, the anchor bars arranged on the adjacent sleeves do not interfere with each other.
Further, the heights of the beam sections at the two ends of the metal beam are fixed.
Further, the construction method of the laminated beam comprises the following steps:
S1: selecting the beam sections with corresponding number and corresponding height according to the span of the superposed beam;
S2: placing the beam sections in a linear order with the heights gradually increasing from the edge to the middle, wherein the heights of the end parts of the adjacent beam sections are equal to those of copper;
s3: adjacent beam sections are connected through the fastening assembly, so that the beam sections form the metal beam;
s4: and the bolt is arranged on the metal cross beam, and the sleeve is spirally arranged on the bolt.
S5: and pouring the concrete layer on the upper part of the metal cross beam to cover the sleeve.
Further, the following steps are carried out when the laminated beam is dismantled:
S6: disassembling a bolt on the metal cross beam, separating the bolt from the sleeve, and separating the concrete layer from the metal cross beam;
S7: cutting the concrete layer in blocks, chiseling the concrete layer, and recovering the sleeve;
s8: and (5) removing the fastening assembly and recovering the corresponding beam section.
Further, the beam section is a steel plate with an I-shaped cross section, and comprises a web plate, a top plate arranged at the top end of the web plate and a bottom plate arranged at the bottom end of the web plate; the top plate is provided with a plurality of top plate small holes penetrating through the top plate, and in step S4, the bolts penetrate through the top plate small holes from the lower part of the top plate and are connected with the sleeve.
The composite beam is composed of the metal cross beam and the concrete layer, so that the use of the concrete is reduced, the load of the composite beam is reduced, and the stability of a temporary covering system is improved; meanwhile, the span of the metal cross beam can be changed by adjusting the number of cross beam sections, so that the flexibility is high, when the span of the laminated beam needs to be changed, the effect can be achieved by only changing the number of the cross beam sections in the middle of the metal cross beam, the length of the beam body is more reasonable than that of a common laminated beam by increasing the length of the end part, the cross beam sections can be recycled, and the waste of materials is reduced.
In summary, the laminated beam for the temporary covering system provided by the invention can be widely applied to the technical fields of road construction, road and bridge construction and the like, and has high market value.
Drawings
FIG. 1 is a schematic view of a laminated beam structure;
FIG. 2 is a schematic diagram of a web of beam segments;
FIG. 3 is a schematic illustration of a cross beam segment in a "straight" series connection;
FIG. 4 is a schematic view of a connection plate;
FIG. 5 is a schematic top plate view of a beam segment;
FIG. 6 is a schematic view of a bolt, sleeve and tendon;
FIG. 7 is a cross-sectional view of a composite beam;
fig. 8-1 and 8-2 are schematic views of metal beams with different spans.
1-Beam segments, 11-top plates, 12-webs, 13-top plate small holes, 14-first through holes, 15-second through holes, 16-connecting plates and 17-bottom plates;
2-concrete layer, 21-sleeve, 22-bolt, 23-anchor bar;
3-metal cross beam.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than those described herein, and those skilled in the art may readily devise many other varied embodiments that do not depart from the spirit of the invention, and this invention is not limited to the specific embodiments disclosed below.
The technical scheme of the present invention will be clearly and completely described with reference to the specific embodiment and fig. 1.
Embodiment one:
fig. 1 to 7 are schematic structural views of a laminated beam for a temporary decking system according to embodiment 1 of the present invention.
The composite beam includes: the height of the metal cross beam 3 gradually decreases from the middle part of the metal cross beam 3 to the two ends of the metal cross beam 3 and the concrete layer 2. The metal beam 3 is formed by sequentially connecting a plurality of beam sections 1 in a straight shape, the heights of two ends of the beam sections 1 are inconsistent, and the adjacent beam sections 1 are connected through connecting plates 16.
The height of the beam sections 1 at both ends of the metal beam 3 is usually fixed, and when the span of the metal beam 3 needs to be changed, the span of the metal beam 3 can be changed by simply increasing or decreasing the number of beam sections 1 of the corresponding height in the middle of the metal beam 3.
The concrete layer 2 is arranged on the metal cross beam 3 in a pouring way, and the metal cross beam 3 is connected with the concrete layer 2 through bolts 22 and sleeves 21.
The beam section 1 is a steel plate with an H-shaped cross section, and the H-shaped steel plate comprises a web 12, a top plate 11 arranged at the top end of the web 12 and a bottom plate 17 arranged at the bottom end of the web 12. The top plate 11 is horizontally disposed. As shown in fig. 2, the web 12 is vertically disposed, the heights of the two ends of the web 12 are inconsistent, a plurality of first through holes 14 are disposed on the web 12, and an inclined or bent section is disposed on the bottom plate 17.
As shown in fig. 3, the metal beam 3 is formed by connecting beam sections 1, one ends of the adjacent beam sections 1, which have the same height, are adjacently placed, a connecting plate 16 (shown in fig. 4) provided with a second through hole 15 is placed adjacent to the adjacent beam sections 1, and the second through holes 15 on the connecting plate are respectively connected with the first through holes 14 on the webs 12 of the adjacent beam sections 1 through fasteners.
As shown in fig. 5, the i-shaped steel plate top plate 11 is provided with a top plate small hole 13 penetrating the top plate. As shown in fig. 7, bolts 22 are detachably mounted on the metal cross beam 3 through the top plate small holes 13 from bottom to top. The sleeve 21 is arranged on the concrete layer 2, one end of the sleeve 21 with a hole corresponds to the small hole 13 of the top plate, and the bolt 22 is screwed into the sleeve 21 through the small hole 13 of the top plate.
As shown in fig. 6, the sleeve 21 is provided at one end thereof within the concrete layer 2 with anchor bars 23, the anchor bars 23 being provided protruding on the outer side surface of the sleeve 21.
As shown in fig. 7, adjacent anchor bars 23 in the concrete layer 2 do not interfere with each other.
The sleeve 21 and the anchor bars 23 increase the contact area between the metal cross beam 3 and the concrete layer 2, so that the integral structure of the laminated beam is firmer, and the adjacent anchor bars 23 are not connected, so that the concrete layer 2 and the steel plate group can be easily separated after the laminated beam is used, the cross beam section 1 is more conveniently recycled, and the repeated use of the cross beam section 1 is realized.
Embodiment two:
the embodiment provides an installation method of a laminated beam, which comprises the following steps:
S1: the beam sections 1 with the corresponding number and the corresponding height are selected according to the spans of the laminated beams, and the laminated beams with different spans can select the beam sections 1 with different numbers and different heights, as shown in fig. 8-1 and 8-2;
S2: the beam sections 1 are placed in a linear order with the heights gradually increasing from the edge to the middle, and the heights of the end parts of the adjacent beam sections 1 are ensured to be the same;
S3: a connecting plate 16 provided with second through holes 15 is placed adjacent to the adjacent beam sections 1, and the second through holes 15 on the connecting plate 16 are respectively connected with the first through holes 14 on the web 12 of the adjacent beam sections 1 through fasteners, so that the beam sections 1 form the metal beam.
S4: the bolts are arranged on the metal cross beam, pass through the small holes of the top plate from the lower part of the top plate, and the sleeves are spirally arranged on the bolts;
s5: pouring a concrete layer on the upper part of the metal cross beam, wherein the concrete layer covers the sleeve;
The embodiment also provides a method for dismantling the laminated beam, which comprises the following steps:
S6: the bolts on the metal cross beam are detached, the bolts are separated from the sleeve, at the moment, the connection between the concrete layer and the metal cross beam is weakened, and the concrete layer can be separated from the metal cross beam;
s7: cutting the concrete layer in blocks according to the distribution of the sleeves, then chiseling the concrete layer, and recovering the sleeves;
s8: and removing the connecting plates and the fastening components which are arranged between the adjacent beam sections, opening the metal beam, and recovering the corresponding beam sections.
The present invention is not limited to the preferred embodiments, and any simple modification, equivalent variation and modification made to the above embodiments according to the technical substance of the present invention will still fall within the scope of the technical solution of the present invention.
Claims (7)
1. A method of constructing a composite beam for a temporary decking system, comprising: a superposed beam;
the composite beam includes: the height of the metal cross beam gradually decreases from the middle part of the metal cross beam to the two ends; the metal beam comprises a plurality of beam sections which are connected in a straight shape in sequence, the heights of the two ends of the beam sections are inconsistent, and a connecting assembly for connecting the adjacent beam sections is arranged between the beam sections;
The connecting assembly comprises a plurality of first through holes arranged on the beam section and a connecting plate provided with second through holes corresponding to the first through holes, and a fastening assembly is connected in series between the first through holes and the second through holes;
The concrete layer is poured and arranged on the metal cross beam, and an easily-detachable component for connecting the metal cross beam and the concrete layer is arranged between the metal cross beam and the concrete layer;
the easy-to-disassemble and assemble assembly comprises a sleeve and a bolt, wherein the bolt is detachably arranged on the metal cross beam, the sleeve is arranged on the concrete layer, and the sleeve is in threaded connection with the bolt;
The construction method of the laminated beam is characterized by comprising the following steps of:
S1: selecting the beam sections with corresponding number and corresponding height according to the span of the superposed beam;
S2: the beam sections are placed in a linear order with the heights gradually increasing from the edge to the middle, and the heights of the end parts of the adjacent beam sections are the same;
s3: adjacent beam sections are connected through the fastening assembly, so that the beam sections form the metal beam;
S4: the bolt is arranged on the metal cross beam, and the sleeve is spirally arranged on the bolt;
s5: and pouring the concrete layer on the upper part of the metal cross beam to cover the sleeve.
2. The construction method according to claim 1, wherein:
the beam section is a steel plate with an I-shaped cross section and comprises a web plate, a top plate arranged at the top end of the web plate and a bottom plate arranged at the bottom end of the web plate;
the top plate is horizontally arranged, and the bottom plate is provided with an inclined or bent section.
3. The construction method according to claim 1, wherein,
One end of the sleeve in the concrete layer is provided with an anchor bar, and the anchor bar is convexly arranged on the outer side face of the sleeve.
4. The construction method according to claim 3, wherein,
The anchor bars arranged on the adjacent sleeves do not interfere with each other.
5. The construction method according to claim 1, wherein,
The heights of the beam sections at the two ends of the metal beam are fixed.
6. Construction method according to claim 1, characterized in that the following steps are carried out when the superimposed beam is removed:
s6: disassembling a bolt on the metal cross beam, wherein the bolt is separated from the sleeve, and the concrete layer is separated from the metal cross beam;
S7: cutting the concrete layer in blocks, chiseling the concrete layer, and recovering the sleeve;
And S8, removing the fastening assembly and recovering the corresponding beam section.
7. The construction method according to claim 1, wherein,
The beam section is a steel plate with an I-shaped cross section and comprises a web plate, a top plate arranged at the top end of the web plate and a bottom plate arranged at the bottom end of the web plate;
The top plate is provided with a plurality of top plate small holes penetrating through the top plate, and in step S4, the bolts penetrate through the top plate small holes from the lower part of the top plate and are connected with the sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811324083.4A CN109505242B (en) | 2018-11-08 | 2018-11-08 | Superimposed beam for temporary covering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811324083.4A CN109505242B (en) | 2018-11-08 | 2018-11-08 | Superimposed beam for temporary covering system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109505242A CN109505242A (en) | 2019-03-22 |
| CN109505242B true CN109505242B (en) | 2024-05-17 |
Family
ID=65747916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811324083.4A Active CN109505242B (en) | 2018-11-08 | 2018-11-08 | Superimposed beam for temporary covering system |
Country Status (1)
| Country | Link |
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| CN (1) | CN109505242B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112359966B (en) * | 2020-10-27 | 2022-04-29 | 广州地铁设计研究院股份有限公司 | Connecting joint of superposed beam and concrete column and construction method thereof |
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| KR20030013608A (en) * | 2001-08-08 | 2003-02-15 | (주)스틸엔콘크리트 | Method of division manufacturing and construction of prestressed composite beam using supporting members |
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| CN203603073U (en) * | 2013-11-27 | 2014-05-21 | 中铁第四勘察设计院集团有限公司 | Reinforced concrete lattice type composite platform beam of elevated station |
| CN204077686U (en) * | 2014-08-29 | 2015-01-07 | 南车二七车辆有限公司 | Heavy－duty railway truck central sill forms |
| CN106087711A (en) * | 2016-08-09 | 2016-11-09 | 湖南联智桥隧技术有限公司 | Antinode work beam-steel concrete top board-external prestressing combines T-shaped simply supported beam |
| CN106835951A (en) * | 2017-03-28 | 2017-06-13 | 宁波金蛟龙重工钢构有限公司 | A kind of replaceable prefabricated assembled combined beam structure and manufacturing process |
| CN206616421U (en) * | 2017-03-01 | 2017-11-07 | 广州地铁设计研究院有限公司 | A kind of interim bedding structure across Metro station excavation |
| CN206815384U (en) * | 2017-04-23 | 2017-12-29 | 中建三局基础设施工程有限公司 | A kind of Bailey beam board combining structure as ground drive cap excavation construction cover plate |
| CN209508808U (en) * | 2018-11-08 | 2019-10-18 | 广州地铁设计研究院股份有限公司 | A kind of composite beam for interim bedding system |
-
2018
- 2018-11-08 CN CN201811324083.4A patent/CN109505242B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030013608A (en) * | 2001-08-08 | 2003-02-15 | (주)스틸엔콘크리트 | Method of division manufacturing and construction of prestressed composite beam using supporting members |
| CN2723508Y (en) * | 2004-05-18 | 2005-09-07 | 贵阳铁路分局贵阳工务大修段 | Fish belly assembly construction beam |
| CN203603073U (en) * | 2013-11-27 | 2014-05-21 | 中铁第四勘察设计院集团有限公司 | Reinforced concrete lattice type composite platform beam of elevated station |
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| Publication number | Publication date |
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| CN109505242A (en) | 2019-03-22 |
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