CN117569512A - Curved variable-section concrete double beam and construction method thereof - Google Patents
Curved variable-section concrete double beam and construction method thereof Download PDFInfo
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- CN117569512A CN117569512A CN202310904739.4A CN202310904739A CN117569512A CN 117569512 A CN117569512 A CN 117569512A CN 202310904739 A CN202310904739 A CN 202310904739A CN 117569512 A CN117569512 A CN 117569512A
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- 238000010276 construction Methods 0.000 title claims abstract description 38
- 238000007493 shaping process Methods 0.000 claims abstract 2
- 229910000831 Steel Inorganic materials 0.000 claims description 37
- 239000010959 steel Substances 0.000 claims description 37
- 239000002023 wood Substances 0.000 claims description 22
- 238000005266 casting Methods 0.000 claims description 20
- 238000009415 formwork Methods 0.000 claims description 13
- 230000002787 reinforcement Effects 0.000 claims description 11
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 description 4
- 238000009435 building construction Methods 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000009432 framing Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/38—Arched girders or portal frames
- E04C3/44—Arched girders or portal frames of concrete or other stone-like material, e.g. with reinforcements or tensioning members
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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
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
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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
- E04B7/08—Vaulted roofs
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D15/00—Apparatus or tools for roof working
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/36—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for floors, ceilings, or roofs of plane or curved surfaces end formpanels for floor shutterings
- E04G11/48—Supporting structures for shutterings or frames for floors or roofs
- E04G11/50—Girders, beams, or the like as supporting members for forms
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
- E04G17/06—Tying means; Spacers ; Devices for extracting or inserting wall ties
- E04G17/065—Tying means, the tensional elements of which are threaded to enable their fastening or tensioning
- E04G17/0655—Tying means, the tensional elements of which are threaded to enable their fastening or tensioning the element consisting of several parts
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
The invention provides a curved variable-section concrete double beam and a construction method thereof, and relates to the technical field of space concrete curved beams and construction. The curved variable-section concrete double beam comprises a first frame column; the top end of the second frame column is higher than the top end of the first frame column; one end of the first beam structure is connected with the top end of the first frame column, and the other end of the first beam structure is connected with the top end of the second frame column; the second beam structure is positioned below the first beam structure, one end of the second beam structure is connected with the first beam structure, and the other end of the second beam structure is connected with the second frame column; stirrups, which are sleeved on the first beam structure and the second beam structure; the hanging bar is fixedly connected with the stirrup; waterproof plate structure, waterproof plate structure shaping is between first beam structure, second beam structure and second frame post. The invention has the characteristics of cost saving and easy assembly of the construction template, and the double beams are stressed cooperatively, and the construction method can ensure the accuracy and construction speed of the curved surface.
Description
Technical Field
The invention relates to the technical field of space concrete curved beams and construction, in particular to a curved variable-section concrete double beam and a construction method thereof.
Background
With the development of technology and materials in the civil engineering field, the requirements of people on architectural artistic modeling are increasing. The space curved surface has extremely high architectural aesthetic and artistic value, and becomes not only a hot spot pursued by designers, but also an important landmark building. The construction cost of the space curved surface concrete structure is lower than that of the steel structure, the waterproof and windproof effects are better, but the construction efficiency of the space curved surface concrete structure is low, the construction quality control difficulty is high, and the construction template consumption is high. Therefore, the construction technology and quality of the space curved surface concrete structure are required to be improved.
Curved beams are often used in space curved structures, and curved variable-section concrete double beams are less commonly used. When the difference of the heights of one end of the two roofs is larger and the difference of the heights of the other end of the two roofs is smaller, the cost of the whole beam is larger, and the method is uneconomical. The inventor comprehensively considers the construction cost, and proposes a double-beam structure of concrete with a curved variable cross section, which not only solves the height difference of the roof, but also saves the cost, and the double beams are stressed cooperatively. Meanwhile, in order to ensure the construction quality and the curved surface accuracy, a construction method of the curved variable-section concrete double beam is provided. The construction method not only realizes factory prefabrication production and field assembly of the curved steel template, but also can greatly improve the construction quality and speed, and the wood template can be reused.
Disclosure of Invention
The embodiment of the invention discloses a curved variable-section concrete double-beam structure and a construction method thereof, which have the characteristics of good bearing capacity and cost saving.
In a first aspect, the present invention discloses a curved variable cross-section concrete double beam comprising:
a first frame column;
the top end of the second frame column is higher than the top end of the first frame column;
one end of the first beam structure is connected with the top end of the first frame column, and the other end of the first beam structure is connected with the top end of the second frame column;
the second beam structure is positioned below the first beam structure, one end of the second beam structure is connected with the first beam structure, and the other end of the second beam structure is connected with the second frame column;
stirrups, which are hooped on the first beam structure and the second beam structure;
the hanging bar is fixedly connected with the stirrup;
waterproof plate structure, waterproof plate structure install in first roof beam structure the second roof beam structure with between the second frame post.
As an optional implementation manner, the first beam structure includes a first beam body, a first beam top rib and a first beam bottom rib, where the first beam top rib is located at the top of the first beam body and is fixedly connected with the first frame column and the second frame column respectively, and the first beam bottom rib is located at the bottom of the first beam body and is fixedly connected with the second frame column, and the first beam body is cast and formed on the first beam top rib and the first beam bottom rib.
As an optional implementation manner, the second beam structure includes a second beam body, a second beam top rib and a second beam bottom rib, the second beam bottom rib is located at the bottom of the second beam body and is fixedly connected with the first frame column and the second frame column respectively, the second beam top rib is located at the top of the second beam body and is fixedly connected with the second frame column, the second beam body is cast and molded between the second beam top rib and the second beam bottom rib, and the waterproof board structure is installed between the first beam bottom rib and the second beam top rib.
As an optional implementation manner, the waterproof board structure comprises a waterproof board body, waterproof board vertical ribs and waterproof board horizontal ribs, the waterproof board horizontal ribs and the waterproof board vertical ribs are alternately arranged in the waterproof board body, and the waterproof board body is molded between the first beam bottom ribs and the second beam top ribs in a casting mode.
As an optional implementation manner, two ends of the waterproof board vertical rib respectively extend into the first beam body and the second beam body.
As an optional implementation manner, the waterproof plate vertical ribs are fixedly connected with the first beam bottom rib and the second beam top rib respectively.
As an optional implementation manner, two ends of the hanging bar extend to the first beam body and the second beam body respectively, and are fixedly connected with the stirrup in the first beam body and the second beam body areas.
In a second aspect, the present invention provides a construction method of a curved variable cross-section concrete double beam for constructing the curved variable cross-section concrete double beam of any one of the preceding claims, the construction method comprising:
setting up a bracket and a bottommost template;
a reinforcing steel bar binding step, wherein the reinforcing steel bar binding step comprises the following steps:
a first beam top rib, a first beam bottom rib, a second beam top rib, a second beam bottom rib, a waterproof board vertical rib and a waterproof board horizontal rib are erected between the bottom surface template and the first frame column and the second frame column, a plurality of stirrups are hooped on the first beam top rib and the second beam bottom rib, and hanging ribs are arranged on the stirrups; the first beam top rib, the second beam top rib and the stirrup are used for casting a first beam structure, the second beam top rib and the second beam bottom rib are used for casting a second beam structure, and the waterproof plate vertical rib and the waterproof plate horizontal rib are used for casting a waterproof plate structure;
a template mounting step, the template mounting step comprising:
installing a template for casting the second beam structure: a third side die and a fourth side die are arranged on the bottommost surface die plate, and the second beam top rib and the second beam bottom rib are both positioned between the third side die and the fourth side die, wherein the third side die and the fourth side die are fixed with the bottommost surface die plate;
installing a flat roof formwork, wherein the flat roof formwork comprises a planar bottom die and a planar top die, the planar bottom die is fixedly connected with the fourth side die, and the planar top die is installed above the planar bottom die;
installing templates for casting the waterproof board structure and the first beam structure: the method comprises the steps of installing a groove steel die, a first side die, a second side die, a curved surface bottom die and a curved surface top die, wherein the groove steel die is located above a third side die and is fixed with the third side die, the second side die is located above the groove steel die and is fixed with the groove steel die, the curved surface bottom die is located above the second side die and is fixed with the second side die, the first side die is located above the plane top die and is fixed with the plane top die, the curved surface top die is located above the first side die and is fixed with the first side die, and pouring holes are formed in the curved surface top die;
and pouring concrete into the pouring holes to form the curved variable-section concrete double beam.
As an alternative embodiment, the curved top mold, the curved bottom mold, the first side mold and the second side mold are steel templates; the bottommost surface template, the third side die and the fourth side die are all wood templates.
As an alternative embodiment, the construction method further includes a formwork reinforcement step before casting concrete, the formwork reinforcement step including: and reinforcing the second side die, the groove steel die and the first side die through longitudinal wood beams and opposite-pull screws.
Compared with the prior art, the invention has the beneficial effects that:
the embodiment of the invention provides a curved variable cross section concrete double beam and a construction method thereof, wherein: the first frame column and the second frame column are main frame portions of the building construction. The first beam structure and the second beam structure are substantially angled, and the first beam structure is a curved cross-section beam. The first beam structure is located the top of second beam structure, and first beam structure and second beam structure all are connected with first frame post and second frame post respectively, and first beam structure and second beam structure all concrete forming are on first frame post and second frame post promptly. The first beam structure and the second beam structure are arranged as a whole at one end close to the first frame column, the first beam structure is located above the second beam structure at one end close to the second frame column, and a waterproof plate structure is arranged between the first beam structure and the second beam structure, so that the waterproof effect can be achieved, the first beam structure and the second beam structure can be concentrated to cooperatively bear force, and the bearing capacity of the curved concrete double beam is ensured. In the position of the bifurcation of the first beam structure and the second beam structure, the embodiment of the invention is provided with a plurality of stirrups and hanging bars, and the stirrups are uniformly sleeved on the first beam structure and the second beam structure so as to reduce or avoid the tension cracking of the first beam structure and the second beam structure. The hanging bars are fixed with the stirrups, so that cracks generated in the first beam structure and the second beam structure at the positions can be further reduced or avoided. The embodiment of the invention can solve the problem of height difference between the first frame column and the second frame column by arranging the first beam structure, the second beam structure and the waterproof board structure, and meanwhile, compared with the scheme of adopting an integral beam, the structural forms of the first beam structure and the second beam structure provided by the invention have better economy, and the double beams are stressed cooperatively. The construction quality of the curved surface is guaranteed by the curved surface top die and the groove steel die, the cost is saved by combining the steel die and the wood die for the construction template, and the construction speed is greatly improved by easy assembly of the construction template.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a curved variable cross section concrete double beam structure according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of the structure at A-A in FIG. 1;
FIG. 3 is a schematic cross-sectional view of the structure at B-B in FIG. 1;
FIG. 4 is a schematic view of the hanger bar of FIG. 1;
FIG. 5 is a schematic view of a beam form of a curved variable cross-section concrete double beam according to an embodiment of the present invention;
FIG. 6 is a schematic cross-sectional view of the structure at C-C in FIG. 5;
fig. 7 is a perspective view of the beam form construction of fig. 5.
Icon: 101. a first frame column; 102. a second frame column; 110. a first beam structure; 111. a first beam body; 112. a first beam top rib; 113. a first beam bottom rib; 120. a second beam structure; 121. a second beam body; 122. a second beam top rib; 123. a second beam bottom rib; 130. stirrups; 140. hanging ribs; 150. a waterproof board structure; 151. a waterproof board body; 152. vertical ribs of the waterproof plate; 153. horizontal ribs of the waterproof plate; 200-supporting; 201. a bottom-most template; 202. a third side mold; 203. a fourth side die; 204. a planar bottom die; 205. a planar top mold; 206. groove steel mould; 207. a first side mold; 208. a second side mold; 209. a curved bottom die; 210. a curved surface top mold; 211. pouring holes; 301. reinforcing a longitudinal wood beam; 302. and (5) oppositely penetrating the screw rod.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are only used to better describe the present invention and its embodiments and are not intended to limit the scope of the indicated devices, elements or components to the particular orientations or to configure and operate in the particular orientations.
Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the present invention will be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, the terms "mounted," "configured," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, the terms "first," "second," and the like, are used primarily to distinguish between different devices, elements, or components (the particular species and configurations may be the same or different), and are not used to indicate or imply the relative importance and number of devices, elements, or components indicated. Unless otherwise indicated, the meaning of "a plurality" is two or more.
The technical scheme of the invention will be further described with reference to the examples and the accompanying drawings.
Referring to fig. 1, an embodiment of the present invention provides a curved variable cross-section concrete double beam structure. The curved variable-section concrete double-beam structure has good bearing capacity and has the characteristic of saving cost.
As shown in fig. 1 to 4, in an embodiment of the present invention, the curved variable cross-section concrete double girder structure includes: a first frame column 101; a second frame column 102, the top end of the second frame column 102 being higher than the top end of the first frame column 101; a first beam structure 110, one end of the first beam structure 110 is connected to the top end of the first frame column 101, and the other end is connected to the top end of the second frame column 102; the second beam structure 120, the second beam structure 120 is located below the first beam structure 110, one end of the second beam structure 120 is connected with the first beam structure 110, and the other end is connected with the second frame column 102; stirrups 130, the stirrups 130 being hooped to the first beam structure 110 and the second beam structure 120; the hanging bar 140, the hanging bar 140 is fixedly connected with the stirrup 130; the flashing structure 150. The flashing structure 150 is mounted between the first beam structure 110, the second beam structure 120 and the second frame column 102.
It should be noted that, in the embodiment of the present invention, the first frame column 101 and the second frame column 102 may be formed before the first beam structure 110, the second beam structure 120, and the waterproof board structure 150 are formed (the beam steel bars leave the tie bars on the frame columns); the first frame column 101 and the second frame column 102 are main frame portions of a building construction. The first beam structure 110, the second beam structure 120, and the waterproof board structure 150 are formed by concrete casting. In an embodiment of the invention, the first beam structure 110 and the second beam structure 120 are substantially angled, and the first beam structure 110 is a curved cross-sectional beam. The first beam structure 110 is located above the second beam structure 120, and the first beam structure 110 and the second beam structure 120 are respectively connected with the first frame column 101 and the second frame column 102, that is, the first beam structure 110 and the second beam structure 120 are both formed on the first frame column 101 and the second frame column 102 by concrete. At the end near first frame post 101, first beam structure 110 and second beam structure 120 set up as an organic wholely, at the one end near second frame post 102, first beam structure 110 is located the top of second beam structure 120, and is provided with waterproof plate structure 150 between first beam structure 110 and second beam structure 120, both can play the waterproof effect, can make first beam structure 110 and second beam structure 120 concentrate the atress in coordination again, ensures the bearing capacity of bent concrete double-beam.
Meanwhile, it should be noted that, in the "bifurcation" position of the first beam structure 110 and the second beam structure 120, the present embodiment of the present invention is provided with a stirrup 130 and a hanging bar 140, and the stirrup 130 may be plural and uniformly sleeved on the first beam structure 110 and the second beam structure 120, so as to reduce or avoid the tension cracking of the first beam structure 110 and the second beam structure 120. The hanging bar 140 is fixed to the stirrup 130, and the occurrence of cracks in the first beam structure 110 and the second beam structure 120 at this location can be further reduced or avoided.
The embodiment of the invention can solve the problem of the height difference between the first frame column 101 and the second frame column 102 by arranging the first beam structure 110, the second beam structure 120 and the waterproof board structure 150, and meanwhile, compared with the scheme of adopting an integral beam, the structural forms of the first beam structure 110 and the second beam structure 120 provided by the invention have more economical efficiency.
In an alternative embodiment of the present invention, the first beam structure 110 includes a first beam body 111, a first beam top rib 112 and a first beam bottom rib 113, where the first beam top rib 112 is located at the top of the first beam body 111 and is fixedly connected to the first frame column 101 and the second frame column 102, respectively, and the first beam bottom rib 113 is located at the bottom of the first beam body 111 and is fixedly connected to the second frame column 102, and the first beam body 111 is cast between the first beam top rib 112 and the first beam bottom rib 113.
It should be appreciated that for the first beam 111, it may be formed from cast-in-place concrete. The first beam top rib 112 and the first beam bottom rib 113 are both reinforcement structures for securing stability and reliability of the first beam structure 110. The first beam top rib 112 and the first beam bottom rib 113 may be laid by a reinforcement structure, and the embodiment of the present invention is not particularly limited and restricted. In addition, for the molding of the first beam structure 110, after the first beam top rib 112 and the first beam bottom rib 113 are installed, a form may be installed outside the first beam top rib 112 and the first beam bottom rib 113 to cast the first beam structure 110 by casting concrete.
In an alternative embodiment of the present invention, the second beam structure 120 includes a second beam body 121, a second beam top rib 122 and a second beam bottom rib 123, the second beam bottom rib 123 is located at the bottom of the second beam body 121 and is fixedly connected to the first frame column 101 and the second frame column 102, the second beam top rib 122 is located at the top of the second beam body 121 and is fixedly connected to the second frame column 102, the second beam body 121 is cast between the second beam top rib 122 and the second beam bottom rib 123, and the waterproof board structure 150 is installed between the first beam bottom rib 113 and the second beam top rib 122.
It should also be appreciated that for the second beam body 121, it may be formed from cast-in-place concrete. The second beam top ribs 122 and the second beam bottom ribs 123 are both reinforcement structures for securing stability and reliability of the second beam structure 120. The second beam top ribs 122 and the second beam bottom ribs 123 may be laid by a reinforcing steel bar structure, and the embodiment of the present invention is not particularly limited and restricted. In addition, for the molding of the second beam structure 120, after the second beam top rib 122 and the second beam bottom rib 123 are installed, a form may be installed outside the second beam top rib 122 and the second beam bottom rib 123 to cast the second beam structure 120 by casting concrete. Of course, the first beam 111 and the second beam 121 may be formed by casting concrete at one time.
Alternatively, in the present embodiment, both ends of the hanging bar 140 extend to the first beam 111 and the second beam 121, respectively, and are fixedly connected to the stirrup 130 in the areas of the first beam 111 and the second beam 121. The fixing manner of the hanging bar 140 and the stirrup 130 can be binding, namely, when the reinforcing steel bar is bound before concrete is poured, the hanging bar 140 and the stirrup 130 can be bound to ensure the stability and the reliability of the structure.
It should be noted that at the "bifurcation" of the first beam structure 110 and the second beam structure 120, stirrups 130 are used to secure the first beam top rib 112, the first beam bottom rib 113, the second beam top rib 122 and the second beam bottom rib 123; stirrup 130 is used to secure first beam top rib 112 and second beam bottom rib 122 prior to the "bifurcation" of first beam structure 110 and second beam structure 120; after the "bifurcation" of the first beam structure 110 and the second beam structure 120, the upper stirrup 130 secures the first beam top rib 112 and the first beam bottom rib 113, and the lower stirrup 130 secures the second beam top rib 122 and the second beam bottom rib 123.
In an alternative embodiment of the present invention, the waterproof board structure 150 includes a waterproof board body 151, a waterproof board vertical rib 152 and a waterproof board horizontal rib 153, the waterproof board horizontal rib 153 and the waterproof board vertical rib 152 are arranged in the waterproof board body 151 in a staggered manner, and the waterproof board body 151 is installed between the first beam bottom rib 113 and the second beam top rib 122.
It should be understood that the waterproof board vertical rib 152 and the waterproof board lateral rib 153 are the reinforcement structures of the waterproof board structure 150, and the waterproof board body 151 is molded by concrete casting. During construction, templates can be erected outside the waterproof board vertical ribs 152 and the waterproof board transverse ribs 153, and then concrete is poured and formed.
Alternatively, in the present embodiment, in terms of structure, both ends of the waterproof board vertical rib 152 extend into the first beam body 111 and the second beam body 121, respectively. And when the waterproof plate vertical rib 152 is bound, two ends of the waterproof plate vertical rib 152 can be fixedly connected with the first beam bottom rib 113 and the second beam top rib 122 respectively. The fixed connection mode can be binding and the like.
Referring to fig. 5 to 7, an embodiment of the present invention provides a construction method of a curved variable cross-section concrete double beam. The construction method is used for constructing any one of the curved variable-section concrete double beams in the previous embodiment. As shown in the figure, the construction method of the curved variable-section concrete double beam comprises the following steps.
Step S1: the rack 200 and the bottommost form 201 are erected.
In this step, a bracket 200 is set up, a wood beam and a bottommost surface template 201 are laid, the bracket 200 can be a plate buckle type full framing 200, the bottom surface template on the wood beam and the wood beam is laid on the bottom of the plate, and the bottommost surface template 201 can be a wood pattern. In step S1, the bottommost floor formwork 201 is located below the second beam floor 123.
Step S2: and binding the reinforcing steel bars. The steel bar binding step comprises the following substeps:
substep S21: a first beam top rib 112, a first beam bottom rib 113, a second beam top rib 122, a second beam bottom rib 123, a waterproof board vertical rib 152 and a waterproof board horizontal rib 153 are erected between the first frame column 101 and the second frame column 102 above the bottom surface template;
substep S22: hooping a plurality of stirrups 130 on the first beam top bar 112 and the second beam bottom bar 123;
substep S23: a hanging bar 140 is installed on the stirrup 130.
For each of the above sub-steps, the first beam top rib 112, the second beam top rib 122 and the stirrup 130 are used to cast the first beam structure 110, the second beam top rib 122, the second beam bottom rib 123 and the stirrup 130 (the "bifurcation" position of the first beam structure and the second beam structure) are used to cast the second beam structure 120, and the flashing vertical rib 152 and the flashing horizontal rib 153 are used to cast the flashing structure 150. It should be noted that the reinforcement bar binding step is mainly performed by blanking and binding the reinforcement bars. The reinforced structure of the curved variable-section concrete double beam comprises a first beam top rib 112, a first beam bottom rib 113, a second beam top rib 122, a second beam bottom rib 123, a waterproof board vertical rib 152, a waterproof board horizontal rib 153, a stirrup 130, a hanging rib 140 and the like. The first beam top ribs 112 and the first beam bottom ribs 113 are curved steel bars, the curved steel bars can be processed according to curvature provided by revit, the stirrups 130 can be processed according to elevation provided by revit, the rest steel bars are fed according to a normal method, and the curved steel bars (the first beam top ribs 112 and the first beam bottom ribs 113) need to ensure the minimum protective layer thickness; and after the steel bar blanking is completed, binding the steel bars.
Step S3: and (3) installing a template. The template mounting step comprises the following substeps:
substep S31: installing a form for casting the second beam structure 120: a third side die 202 and a fourth side die 203 are arranged on the bottommost surface die plate 201, and a second beam top rib 122 and a second beam bottom rib 123 are positioned between the third side die 202 and the fourth side die 203, wherein the third side die 202 and the fourth side die 203 are fixed with the bottommost surface die plate 201;
substep S32: installing a flat roof formwork, wherein the flat roof formwork comprises a flat bottom die 204 and a flat top die 205, the flat bottom die 204 is fixedly connected with a fourth side die 203, and the flat top die 205 is installed above the flat bottom die 204;
substep S33: installing a form for casting the flashing structure 150 and the first beam structure 110: the method comprises the steps of installing a groove steel die 206, a first side die 207, a second side die 208, a curved surface bottom die 209 and a curved surface top die 210, wherein the groove steel die 206 is located above the third side die 202 and is fixed with the third side die 202, the second side die 208 is located above the groove steel die 206 and is fixed with the groove steel die 206, the curved surface bottom die 209 is located above the second side die 208 and is fixed with the second side die 208, the first side die 207 is located above the plane top die 205 and is fixed with the plane top die 205, the curved surface top die 210 is located above the first side die 207 and is fixed with the first side die 207, and pouring holes 211 are formed in the curved surface top die 210.
In this embodiment, the curved top mold 210, the curved bottom mold 209, the first side mold 207, and the second side mold 208 are steel templates; the bottommost form 201, the third side form 202, and the fourth side form 203 are wood forms.
It should be noted that the curved top mold 210 and the groove steel mold 206 can be machined by curvature provided by revit, and the remaining steel mold plates and wood mold plates can be machined to the set dimensions. After the binding of the reinforcing steel bars is completed, a third side die 202 and a fourth side die 203 of the second beam structure 120 are firstly installed, and the third side die 202 and the bottommost surface die 201, and the fourth side die 203 and the bottommost surface die 201 are fixed through fixed wood beams and nails; then installing a flat roof template, fixing a flat bottom die 204 and a fourth side die 203 through a fixed wood beam and a fixed nail, and installing a flat top die 205 above the roof board; secondly, installing a waterproof board structure 150 and a groove steel die 206, a first side die 207 and a second side die 208 of the first beam structure 110, and fixing a third side die 202 and the groove steel die 206 through fixing wood beams and bolts; the groove steel die 206 and the second side die 208 are fixed by bolts; the plane top die 205 and the first side die 207 are fixed by fixing wood beams, nails and opposite penetrating screws 302; finally, a curved bottom die 209 and a curved top die 210 are installed, the second side die 208 is fixed with the curved bottom die 209 through bolts, and the first side die 207 is fixed with the curved top die 210 through bolts.
Step S4: and (3) template reinforcement. In this step, the second side form 208 and the groove steel form 206 are reinforced with the first side form 207 by longitudinal wood beams and counter-pull screws.
It should be noted that, the two-sided reinforced longitudinal wood beams 301 on two sides of the structure reinforce the first side mold 207 and the second side mold 208 and the first side mold 207 and the groove mold plate by the opposite screw 302, so as to prevent the expansion mold during the concrete pouring, the first side mold 207 and the second side mold 208 and the first side mold 207 and the groove mold plate are provided with holes, and the opposite screw 302 penetrates the holes to reinforce the first side mold 207 and the second side mold 208 and the first side mold 207 and the groove mold plate. The reinforced transverse wood beams and the reinforced longitudinal wood beams 301 are fixed through the nails, so that two or more reinforced transverse wood beams on one side are integrated, and the safety of the side mold is enhanced.
Step S5: concrete is poured into the pouring holes 211 to form a curved variable-section concrete double beam.
In step S5, concrete is poured by a pump truck through the pouring holes 211 of the pre-left curved surface top mold 210, and after pouring is completed, the concrete is vibrated by a vibrating rod, so that the compactness of the concrete is ensured. To form the curved variable cross-section concrete double beam.
Referring to fig. 1 to 7 in combination, the curved variable cross-section concrete double beam and the construction method thereof according to the embodiment of the present invention: the first frame column 101 and the second frame column 102 are main frame portions of a building construction. The first beam structure 110 and the second beam structure 120 are generally angled, and the first beam structure 110 is a curved cross-sectional beam. The first beam structure 110 is located above the second beam structure 120, and the first beam structure 110 and the second beam structure 120 are respectively connected with the first frame column 101 and the second frame column 102, that is, the first beam structure 110 and the second beam structure 120 are both formed on the first frame column 101 and the second frame column 102 by concrete. At the end near first frame post 101, first beam structure 110 and second beam structure 120 set up as an organic wholely, at the one end near second frame post 102, first beam structure 110 is located the top of second beam structure 120, and is provided with waterproof plate structure 150 between first beam structure 110 and second beam structure 120, both can play the waterproof effect, can make first beam structure 110 and second beam structure 120 concentrate the atress in coordination again, ensures the bearing capacity of bent concrete double-beam. In the "bifurcated" position of the first and second beam structures 110, 120, embodiments of the present invention provide stirrups 130 and hanging bars 140, and the stirrups 130 may be multiple and each be looped over the first and second beam structures 110, 120 to reduce or avoid tension cracking of the first and second beam structures 110, 120. The hanging bar 140 is fixed to the stirrup 130, and the occurrence of cracks in the first beam structure 110 and the second beam structure 120 at this location can be further reduced or avoided. The embodiment of the invention can solve the problem of the height difference between the first frame column 101 and the second frame column 102 by arranging the first beam structure 110, the second beam structure 120 and the waterproof board structure 150, and meanwhile, compared with the scheme of adopting an integral beam, the structural forms of the first beam structure 110 and the second beam structure 120 provided by the invention have more economical efficiency.
The above describes in detail a curved variable cross-section concrete double beam and a construction method thereof disclosed in the embodiment of the present invention, and specific examples are applied herein to illustrate the principles and embodiments of the present invention, and the description of the above embodiment is only for helping to understand the concept of the curved variable cross-section concrete double beam, the construction method and the core idea of the present invention: meanwhile, as those skilled in the art will vary in the specific embodiments and application scope according to the idea of the present invention, the present disclosure should not be construed as limiting the present invention in summary.
Claims (10)
1. A curved variable cross-section concrete double beam structure, comprising:
a first frame column (101);
-a second frame column (102), the top end of the second frame column (102) being higher than the top end of the first frame column (101);
a first beam structure (110), wherein one end of the first beam structure (110) is connected with the top end of the first frame column (101), and the other end is connected with the top end of the second frame column (102);
a second beam structure (120), wherein the second beam structure (120) is positioned below the first beam structure (110), one end of the second beam structure (120) is connected with the first beam structure (110), and the other end is connected with the second frame column (102);
-stirrups (130), the stirrups (130) being hooped to the first beam structure (110) and the second beam structure (120);
the hanging rib (140), the hanging rib (140) is fixedly connected with the stirrup (130);
the waterproof board structure (150), waterproof board structure (150) shaping in first roof beam structure (110), second roof beam structure (120) and second frame post (102) between.
2. The curved variable-section concrete double beam according to claim 1, wherein the first beam structure (110) comprises a first beam body (111), a first beam top rib (112) and a first beam bottom rib (113), the first beam top rib (112) is located at the top of the first beam body (111) and fixedly connected with the first frame column (101) and the second frame column (102) respectively, the first beam bottom rib (113) is located at the bottom of the first beam body (111) and fixedly connected with the second frame column (102), and the first beam body (111) is cast and molded on the first beam top rib (112) and the first beam bottom rib (113).
3. The curved variable-section concrete double beam according to claim 2, wherein the second beam structure (120) comprises a second beam body (121), a second beam top rib (122) and a second beam bottom rib (123), the second beam bottom rib (123) is located at the bottom of the second beam body (121) and fixedly connected with the first frame column (101) and the second frame column (102) respectively, the second beam top rib (122) is located at the top of the second beam body (121) and fixedly connected with the second frame column (102), the second beam body (121) is cast between the second beam top rib (122) and the second beam bottom rib (123), and the waterproof plate structure (150) is formed between the first beam bottom rib (113) and the second beam top rib (122).
4. A curved variable cross-section concrete double girder according to claim 3, characterized in that the waterproof board structure (150) comprises a waterproof board body (151), a waterproof board vertical rib (152) and a waterproof board horizontal rib (153), the waterproof board horizontal rib (153) and the waterproof board vertical rib (152) are arranged in the waterproof board body (151) in a staggered manner, and the waterproof board body (151) is located between the first girder bottom rib (113) and the second girder top rib (122).
5. The concrete double beam with variable cross section according to claim 4, wherein two ends of the waterproof plate vertical rib (152) extend into the first beam body (111) and the second beam body (121), respectively.
6. The curved variable cross-section concrete double girder according to claim 5, wherein the waterproof plate vertical bars (152) are fixedly connected with the first girder bottom bars (113) and the second girder top bars (122), respectively.
7. A curved variable cross-section concrete double girder according to claim 3, characterized in that the two ends of the hanging bar (140) extend to the first girder body (111) and the second girder body (121), respectively, and are fixedly connected with the stirrup (130) in the areas of the first girder body (111) and the second girder body (121).
8. A construction method of a curved variable cross-section concrete double beam for constructing the curved variable cross-section concrete double beam according to any one of claims 1 to 7, characterized by comprising:
erecting a bracket (200) and a bottommost template (201);
a reinforcing steel bar binding step, wherein the reinforcing steel bar binding step comprises the following steps:
a first beam top rib (112), a first beam bottom rib (113), a second beam top rib (122), a second beam bottom rib (123), a waterproof board vertical rib (152) and a waterproof board horizontal rib (153) are erected between the first frame column (101) and the second frame column (102) above the bottom surface template, a plurality of stirrups (130) are hooped on the first beam top rib (112) and the second beam bottom rib (123), and hanging ribs (140) are arranged on the stirrups (130), wherein the first beam top rib (112) and the second beam top rib (122) are used for casting a first beam structure (110), the second beam top rib (122) and the second beam bottom rib (123) are used for casting a second beam structure (120), and the waterproof board vertical rib (152) and the waterproof board horizontal rib (153) are used for casting a waterproof board structure (150);
hooping a plurality of stirrups (130) on the first beam top bar (112) and the second beam bottom bar (123);
installing hanging ribs (140) on the stirrups (130);
a template mounting step, the template mounting step comprising:
-mounting a formwork for casting the second beam structure (120): a third side die (202) and a fourth side die (203) are arranged on the bottommost surface die plate (201), and the second beam top rib (122) and the second beam bottom rib (123) are positioned between the third side die (202) and the fourth side die (203), wherein the third side die (202) and the fourth side die (203) are fixed with the bottommost surface die plate (201);
installing a flat roof formwork, wherein the flat roof formwork comprises a planar bottom die (204) and a planar top die (205), the planar bottom die (204) is fixedly connected with the fourth side die (203), and the planar top die (205) is installed above the planar bottom die (204);
-installing a formwork for casting the flashing structure (150) and the first beam structure (110): mounting a groove steel die (206), a first side die (207), a second side die (208), a curved surface bottom die (209) and a curved surface top die (210), wherein the groove steel die (206) is positioned above the third side die (202) and is fixed with the third side die (202), the second side die (208) is positioned above the groove steel die (206) and is fixed with the groove steel die (206), the curved surface bottom die (209) is positioned above the second side die (208) and is fixed with the second side die (208), the first side die (207) is positioned above the planar top die (205) and is fixed with the planar top die (205), the curved surface top die (210) is positioned above the first side die (207) and is fixed with the first side die (207), and a pouring hole (211) is formed in the curved surface top die (210);
and pouring concrete into the pouring holes (211) to form the curved variable-section concrete double beam.
9. The method for constructing the curved variable cross-section concrete double beam according to claim 8, wherein the curved top mold (210), the curved bottom mold (209), the groove steel mold (206), the first side mold (207) and the second side mold (208) are steel templates; the bottommost surface template (201), the third side template (202) and the fourth side template (203) are all wood templates.
10. The method of constructing a curved variable cross-section concrete double beam according to claim 8 or 9, wherein the method of constructing further comprises a formwork reinforcement step, prior to casting the concrete, the formwork reinforcement step comprising: the second side form (208) and the groove steel form (206) are reinforced with the first side form (207) by longitudinal wood beams and split screws.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310904739.4A CN117569512A (en) | 2023-07-21 | 2023-07-21 | Curved variable-section concrete double beam and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310904739.4A CN117569512A (en) | 2023-07-21 | 2023-07-21 | Curved variable-section concrete double beam and construction method thereof |
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