CN106869403B - Multilayer prefabricated square steel pipe concrete connecting beam - Google Patents
Multilayer prefabricated square steel pipe concrete connecting beam Download PDFInfo
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- CN106869403B CN106869403B CN201710239143.1A CN201710239143A CN106869403B CN 106869403 B CN106869403 B CN 106869403B CN 201710239143 A CN201710239143 A CN 201710239143A CN 106869403 B CN106869403 B CN 106869403B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
- E04C3/293—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures the materials being steel and concrete
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Abstract
The invention discloses a multilayer prefabricated square steel tube concrete connecting beam which comprises a plurality of girders, wherein the girders are sequentially and seamlessly overlapped, each girder comprises a square steel tube and concrete poured inside the square steel tube, and two ends of each girder along the length direction of the girder extend into a shear wall. The multilayer prefabricated square concrete filled steel tube connecting beam provided by the embodiment of the invention adopts a mode of sequentially and seamlessly superposing a plurality of main beams, so that the span-to-height ratio of the formed multilayer prefabricated square concrete filled steel tube connecting beam is a plurality of times that of a single connecting beam; in addition, the girder is formed by pouring concrete in the square steel pipe, so that the structural deformability can be improved, the connecting beam is guaranteed to have good ductility, and brittle shear damage of the connecting beam is avoided. In addition, the girder provided by the embodiment of the invention adopts a prefabricated component mode, can be assembled on site, and has the advantages of high construction speed and controllable construction quality.
Description
Technical Field
The invention relates to the technical field of structural engineering in civil engineering, in particular to a multilayer prefabricated square steel tube concrete connecting beam.
Background
Connecting beams refer to beams that connect limbs to limbs in shear wall structures and frame-shear wall structures, i.e., connecting beams refer to beams that connect limbs to shear walls at both ends in a plane. In the building structure, the connecting beam is an important energy consumption component in a shear wall or core tube structure system of a high-rise building, and generally has the characteristics of small span, large section and the like.
For the structure of a high-intensity area, the condition that the shearing ratio exceeds the limit is very easy to occur by adopting a common reinforced concrete connecting beam. Therefore, in order to improve the anti-seismic performance of the connecting beam and to increase the shear ratio limit value of the connecting beam, diagonal hidden column reinforcements, diamond reinforcements, diagonal reinforcements, cross diagonal reinforcements, and the like are generally arranged in the reinforced concrete connecting beam. Although these schemes can achieve the effect of improving the connection Liang Yanxing, because the schemes need to be additionally provided with diagonal hidden column reinforcements, diamond reinforcements and the like, the reinforcements are too much in arrangement, so that the materials are too much, the construction is inconvenient, and the construction cost is not convenient to control.
Disclosure of Invention
The invention solves the technical problems of overrun of the shear pressure ratio of the connecting beam, lower energy consumption capability of the connecting beam, inconvenient construction of a building structure and the like in the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a precast square steel pipe concrete of multilayer links roof beam, includes a plurality of girders, a plurality of girders seamless stack in proper order, every the girder all include square steel pipe and pour in the inside concrete of square steel pipe, and every girder all is used for stretching into in the shear force wall along its self length direction's both ends.
Preferably, two adjacent main beams are arranged in parallel.
As an optional implementation manner, in an embodiment of the present invention, the multi-layer prefabricated square steel pipe concrete connecting beam further includes a concrete hidden beam, the concrete hidden beam is seamlessly stacked on the main beams located at the top, the concrete hidden beam is arranged with the same width as the plurality of main beams, and the top surface of the concrete hidden beam is flush with the top surface of the floor slab.
As an alternative implementation manner, in the embodiment of the invention, the height of the concrete hidden beam is the same as the thickness of the floor slab, and the concrete hidden beam is hidden in the floor slab and is integrally formed with the floor slab.
And during construction, the concrete hidden beam and the floor slab can be cast in situ together.
In an embodiment of the present invention, a plurality of longitudinal ribs are disposed in the concrete hidden beam and aligned along a length direction of the concrete hidden beam, the longitudinal ribs extend into the shear wall, and a total area of the longitudinal ribs is based on an area of an upper wall surface of the square steel pipe of the main beam at the top of the concrete hidden beam.
The longitudinal ribs are mainly used for bearing bending moment of the multilayer prefabricated square steel pipe concrete connecting beam, and the anchoring length of the longitudinal ribs in the shear wall can be calculated according to the requirements in the specification of concrete structural design Specification GB 50010.
As an alternative implementation manner, in an embodiment of the present invention, each square steel tube of the main beam includes two side walls extending along a length direction of the square steel tube, two ends of each side wall extend with side plates, and the side plates extend into two shear walls respectively;
the thickness of each side plate is larger than or equal to the thickness of the side wall of the main beam.
Preferably, the thickness of each side plate is equal to the thickness of the side wall of the main beam, that is, in the specific construction, only the side walls at two ends of the square steel tube of the main beam are required to be lengthened so as to extend into the shear wall.
As an alternative embodiment, in an embodiment of the present invention, each of the side plates is anchored in the shear wall, and each of the side plates is provided with a peg therein.
The anchoring length of each side plate in the shear wall is calculated according to the requirement in the specification CECS 230 high-rise building steel-concrete mixed structure design rule.
The studs in the side plates can ensure the connection strength of the side plates and the shear wall.
As an optional implementation manner, in the embodiment of the invention, the three main beams are respectively a first main beam positioned at the bottom, a second main beam positioned at the middle and a third main beam positioned at the top, and the concrete hidden beams are seamlessly stacked on the third main beam;
a slot is formed in the middle of the second main beam, the slot divides the second main beam into a first part and a second part which are symmetrically arranged relative to the slot, and the first part and the second part are equal in length;
wherein the length of the first portion is the smaller of one third of the net span of the second main beam and the second main beam height.
Specifically, adopt the slotted mode in the middle part of second girder can be under the not influence the structural strength's of second girder prerequisite, effective save material reduces construction cost, also can conveniently arrange pipeline or other parts of equipment when the construction simultaneously, improves the convenience of construction.
As an optional implementation manner, in an embodiment of the present invention, a plurality of longitudinal ribs are disposed at the bottom of the first main beam and aligned along the length direction of the first main beam, and the longitudinal ribs extend into the shear wall.
The longitudinal ribs in the first main beam meet the bending calculation requirement and the construction requirement of the first main beam, and the anchoring length of the longitudinal ribs in the shear wall is calculated according to the requirement in the specification of concrete structure design Specification GB 50010.
As an alternative implementation manner, in the embodiment of the present invention, each main beam is a prefabricated member, and the square steel tubes of two adjacent main beams are connected by spot welding.
The prefabricated components are adopted, so that the main beam can be prefabricated in a factory conveniently, and then the prefabricated main beam is assembled on site, so that the construction period is saved, and the construction cost is reduced.
In addition, two adjacent main beams can be connected through spot welding, namely, the two adjacent main beams are overlapped, and a fixing mode is not needed to be additionally arranged.
As an optional implementation manner, in an embodiment of the present invention, a plurality of pegs are disposed inside the square steel tube of each main girder, and the plurality of pegs are uniformly arranged along the length direction of the square steel tube.
The mode that is provided with in every the girder a plurality of pegs is adopted can utilize the peg to guarantee the inside concrete of square steel pipe with square steel pipe's collaborative work.
And the stud arranged on the square steel pipe of the third girder can also ensure the synergy of the square steel pipe of the third girder and the concrete hidden girder.
As an alternative embodiment, in the embodiment of the present invention, the concrete inside the square steel tube of each main girder is normal concrete, recycled block concrete or recycled aggregate concrete.
The recycled block concrete or the recycled aggregate concrete is adopted, so that the recycling of concrete solid waste can be realized, and the purposes of energy conservation and environmental protection are achieved.
The regenerated block concrete is formed by pouring old buildings, old structures, old roads, old bridges or old dams with the new concrete and the old concrete obtained after the old buildings, old structures, old roads, old bridges or old dams are removed and the old concrete after all or part of reinforcing steel bars are removed.
Preferably, the main beam and the side plates can be made of Q235B steel, and the steel has the advantages of good comprehensive performance, good low-temperature performance, good cold stamping performance, good welding performance and good machinability.
Compared with the prior art, the technical scheme adopted by the invention has the following beneficial effects:
(1) The ductility of the connecting beam is effectively improved. The multi-layer precast square concrete filled steel tube connecting beam provided by the embodiment of the invention is characterized in that a plurality of main beams are sequentially and seamlessly overlapped, so that the span-to-height ratio of the formed multi-layer precast square concrete filled steel tube connecting beam is several times that of a single connecting beam; in addition, the girder is formed by pouring concrete in the square steel pipe, so that the structural deformability can be improved, the connecting beam is guaranteed to have good ductility, and brittle shear damage of the connecting beam is avoided.
(2) The construction is convenient and the manufacturing quality of the components is high. According to the multilayer prefabricated square steel tube concrete connecting beam provided by the embodiment of the invention, each main beam adopts the mode of prefabricated components, the square steel tube is used as a template, so that concrete can be conveniently poured inside, meanwhile, the conditions for manufacturing the components in a factory can be met, the pouring and maintenance quality of the concrete inside can be well controlled, and the quality of the formed main beams is high. In addition, the prefabricated component is adopted, so that the assembly can be realized on site, and the method has the advantages of high construction speed and controllable construction quality.
(3) Saving resources. The multilayer prefabricated square steel tube concrete connecting beam provided by the embodiment of the invention can be used for filling the interior of the square steel tube with recycled block concrete or recycled aggregate concrete, so that the waste concrete is recycled, the resources are greatly saved, and the waste and filling of the waste concrete is reduced.
In summary, the multilayer prefabricated square steel pipe concrete connecting beam can ensure the ductility requirement of the concrete connecting beam, has simple construction, convenient installation and high installation quality, and can save resources.
Drawings
Fig. 1 is a schematic installation view of a multilayer prefabricated square steel pipe concrete connecting beam provided by an embodiment of the invention.
Fig. 2 is a sectional view taken inwardly of fig. 1.
Fig. 3 is an internal cross-sectional view of III of fig. 1.
Detailed Description
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 to 3, an assembly schematic diagram of a multi-layer precast square steel pipe concrete bridge 1 according to an embodiment of the present invention is shown. The multilayer prefabricated square steel tube concrete connecting beam 1 comprises a plurality of main beams 10 and concrete hidden beams 20 which are arranged in a seamless overlapping mode in sequence, wherein the concrete hidden beams 20 are arranged on the main beams 10 positioned at the top in a seamless overlapping mode. Each girder 10 includes a square steel pipe 10a and concrete 10b poured inside the square steel pipe 10a, and both ends of each girder 10 along its own length direction are used to extend into the shear wall. The concrete hidden beams 20 are arranged with the same width as each main beam 10, and the top surface of the concrete hidden beams 20 is flush with the top surface of the floor slab 2.
The design of seamlessly superposing a plurality of main beams 10 can improve the span-to-height ratio of the multilayer prefabricated square steel pipe concrete connecting beam 1 and reduce the rigidity of the multilayer prefabricated square steel pipe concrete connecting beam 1; in addition, the design that each girder 10 comprises the square steel pipe 10a and the concrete 10b poured in the square steel pipe 10a is adopted, the square steel pipe 10a can be used as a formwork, the pouring of the concrete 10b is convenient, meanwhile, the formed multilayer prefabricated square steel pipe concrete connecting beam 1 has better deformability and better ductility, and brittle shear damage of the multilayer prefabricated square steel pipe concrete connecting beam 1 is avoided.
In this embodiment, the plurality of main beams 10 are sequentially arranged in a seamless overlapping manner, that is, two adjacent main beams 10 are arranged in a seamless fitting manner. Preferably, two adjacent girders 10 are arranged in parallel, i.e. each girder 10 is arranged in parallel with its adjacent girders 10. In order to further ensure seamless connection between two adjacent main beams 10, the two adjacent main beams 10 can be connected in a spot welding mode after being positioned and installed. It will be appreciated that in other embodiments, two adjacent main beams 10 may be stacked, without additional fixing means.
In this embodiment, the square steel tube 10a of each main beam 10 is preferably made of Q235B steel, which has the advantages of good comprehensive properties, good low temperature properties, good cold stamping properties, good welding properties and good machinability.
Further, in order to ensure the cooperation between the square steel pipe 10a of each girder 10 and the concrete 10b poured inside the square steel pipe 10a, a plurality of pins 10c may be disposed inside each girder 10, and the pins 10c may be uniformly arranged along the length direction of the square steel pipe 10 a. Specifically, the number of pegs 10c in each main beam 10 may be calculated based on the length of the main beam 10, and the distance between two adjacent pegs 10c is preferably equal.
Further, each main beam 10 is a prefabricated member, and the main beams 10 can be prefabricated in a factory conveniently by adopting a prefabricated member mode, and then the prefabricated main beams 10 are assembled on site, so that the construction period is saved and the construction cost is reduced.
In this embodiment, three main beams 10 are preferred, namely a first main beam 11 at the bottom, a second main beam 12 at the middle, and a third main beam 13 at the top. That is, the second main beam 12 is stacked on the first main beam 11 in parallel and seamless, the third main beam 13 is stacked on the second main beam 12 in parallel and seamless, and the above-mentioned concrete hidden beam 20 is stacked on the third main beam 13 in seamless. Aiming at the problems that the conventional connecting beam is easy to have small span-to-height ratio, poor in energy consumption capability, easy to generate brittle shear damage and the like, the three main beams are sequentially overlapped, so that the span-to-height ratio of the multi-layer precast square steel pipe concrete connecting beam 1 is effectively improved, the structural deformability can be improved, the multi-layer precast square steel pipe concrete connecting beam 1 is ensured to have better ductility performance, and the brittle shear damage is avoided. Specifically, the first main beam 11 includes the square steel pipe 10a and the concrete 10b poured inside the square steel pipe 10a, the square steel pipe 10a may have a square or rectangular cross-section, and the concrete 10b poured inside the square steel pipe 10a may be normal concrete, recycled block concrete or recycled aggregate concrete. The regenerated block concrete can be formed by pouring the old building, old structure, old road, old bridge or old dam, obtained by removing all or part of the reinforcing steel bars, and the old concrete together with the new concrete. By adopting the mode of pouring the concrete 10b in the square steel pipe 10a, the pouring of the concrete 10b can be realized by using the square steel pipe 10a as a template, the formwork supporting process is reduced, the construction is convenient, the manufacturing in a factory can be realized, and the pouring and maintenance quality of the concrete can be controlled. In addition, the recycled block concrete or the recycled aggregate concrete is adopted, so that the stacking of the waste concrete can be reduced, the recycling of the waste concrete is realized, the resources are saved, and the material cost is reduced.
Similarly, the second main beam 12 includes a second square steel pipe (not labeled) and a second concrete (not labeled) poured in the second square steel pipe, the third main beam 13 includes a third square steel pipe and a third concrete poured in the third square steel pipe, the cross-sectional shapes of the second square steel pipe and the third square steel pipe are the same as those of the square steel pipe 10a, and the materials of the second concrete and the third concrete are the same as those of the concrete 10b, so that the materials are not repeated here.
Further, the square steel tube 10a of the first main beam 11 includes two first side walls (not labeled) extending along the length direction thereof, that is, the two first side walls may be two side walls disposed opposite to the square steel tube 10a, and the two first side walls have first side plates 11b extending from two ends thereof, and the two pairs of first side plates 11b extend into the shear walls at two ends thereof to be anchored. Specifically, the first side plates 11b may be anchored in the two-sided shear walls, i.e., the first shear wall 3 and the second shear wall 4, and by anchoring the two pairs of first side plates 11b in the first shear wall 3 and the second shear wall 4, respectively, the two ends of the first main beam 11 may be fixed by the first shear wall 3 and the second shear wall 4. It can be known that the anchoring lengths of the two pairs of first side plates 11b in the first shear wall 3 and the second shear wall 4 respectively can be calculated according to the requirements of the specification CECS 230 "design rules of high-rise building steel-concrete hybrid structure".
Further, the thickness of the two pairs of first side plates 11b is greater than or equal to the thickness of the first side wall of the square steel tube 10 a. Preferably, the thickness of the two pairs of first side plates 11b is equal to that of the first side wall of the square steel pipe 10a, so that the side walls at two ends of the square steel pipe 10a can be directly lengthened and anchored into the shear wall without additionally arranging a processing side plate, and the side plates are connected with the side walls, thereby being beneficial to improving the convenience of construction. It will be appreciated that in other embodiments, to further ensure the strength of the connection between the two ends of the first main beam 11 and the shear wall, the thickness of the first side plate 11b may be set to be greater than the wall thickness of the first side wall of the first side steel pipe 10 a.
Further, a peg 10c is provided in each first side plate 11b, and the connection strength of the first side plate 11b and the shear wall can be ensured by using the peg 10c.
It will be appreciated that the square steel tube of the second main beam 12 also includes two second side walls (not shown) extending along its own length direction, two second side plates (not shown) extending from two ends of the two second side walls respectively, two pairs of second side plates extending into the first shear wall 3 and the second shear wall 4 respectively, and each second side plate being provided with the peg 10c. The second side plate has the same structure as the first side plate 11b, and thus will not be described here.
Similarly, the square steel tube of the third main beam 13 also includes two third side walls (not labeled) extending along the length direction of the square steel tube, and third side plates (not labeled) extend respectively at two ends of the two third side walls, and the two pairs of third side plates extend into the first shear wall 3 and the second shear wall 4 respectively, and the stud 10c is disposed in each third side plate. The third side plate has the same structure as the first side plate 11b and the second side plate, and thus will not be described here again.
Further, a plurality of longitudinal ribs 11c are arranged at the bottom of the first main beam 11 along the length direction of the first main beam, and the longitudinal ribs 11c extend into the shear wall. Specifically, the longitudinal ribs 11c in the first main beam 11 are required to meet the bending calculation requirement and the construction requirement of the first main beam 11. In addition, the longitudinal ribs 11c on both sides of the first main beam 11 are anchored in the first shear wall 3 and the second shear wall 4, respectively, and the anchoring lengths of the longitudinal ribs 11c in the first shear wall 3 and the second shear wall 4 should also be calculated according to the requirements in the specification "concrete structure design Specification" GB 50010.
In this embodiment, a slot 12a is provided in the middle of the second main beam 12, the slot 12a divides the second main beam 12 into a first portion 12b and a second portion 12c which are symmetrically disposed with respect to the center of the slot 12a, and the first portion 12b and the second portion 12c are equal in length. Specifically, the slot 12a may be a rectangular slot, and the length of the slot 12a may be equal to the length of the first portion 12b and the second portion 12c, or different from the length of the first portion 12b and the second portion 12c, which is adjusted according to the specific construction situation. Because the second girder 12 is installed between the first girder 11 and the third girder 13, the force born by the second girder 12 is relatively small, and on the premise of not influencing the structural strength of the second girder 12, the material can be saved by adopting the grooving 12a mode, and the arrangement of equipment pipelines or other components during construction can be facilitated, so that the convenience of construction is improved.
Further, the length of the first portion 12b is the smaller of one third of the net span of the second main beam 12 and the height of the second main beam 12. That is, when the height of the second main beam 12 is less than one third of the net span of the second main beam 12, the length of the first portion 12b is the height of the second main beam 12; and when the height of the second main beam 12 is greater than one third of the clear span of the second main beam 12, then the length of the first portion 12b may be selected to be one third of the clear span of the second main beam 12.
In this embodiment, in order to ensure the strength of the top floor slab of the multi-layer precast square steel pipe concrete connecting beam 1, a concrete hidden beam 20 with the same width as the multi-layer precast square steel pipe concrete connecting beam 1 is arranged in the floor slab 2, the height of the concrete hidden beam 20 is set to be the same as the thickness of the floor slab 2, and when in construction and installation, the concrete hidden beam 20 is hidden in the floor slab 2 and integrally formed with the floor slab 2, i.e. when in construction, the concrete hidden beam 20 can be cast in situ together with the floor slab 2. The concrete operation is that when constructing the floor slab 2, the floor slab 2 can be reinforced at the area where the floor slab 2 is connected with the multi-layer precast square steel pipe concrete connecting beam 1, namely, longitudinal bars and stirrups are additionally arranged, so that the bearing capacity is improved.
Further, the concrete hidden beams 20 are anchored in the shear wall along both ends in the length direction thereof, respectively. Specifically, a plurality of longitudinal ribs 21 are arranged in the concrete hidden beam 20 along the length direction of the concrete hidden beam, the longitudinal ribs 21 extend into the shear wall to be anchored, and the total area of the longitudinal ribs 21 in the concrete hidden beam 20 is based on the area of the upper wall surface of the third-party steel pipe of the main beam 10 (namely, the third main beam 13) positioned at the top. That is, the arrangement area of the longitudinal ribs 21 in the concrete filled beam 20 can be calculated from the area of the upper wall surface of the third-party steel pipe of the third main beam 13, so that the diameter and the number of the longitudinal ribs 21 can be calculated easily. The longitudinal ribs 21 are mainly used for bearing bending moment of the multilayer prefabricated square steel tube concrete connecting beam 1, and the anchoring length of the longitudinal ribs 21 in the shear wall is calculated according to the requirements in the specification of concrete structure design Specification GB 50010.
Further, in order to ensure the cooperative stress of the third main beam 13 and the concrete hidden beam 20, a plurality of the above-mentioned pegs 10c are arranged on the upper surface of the square steel tube 10a of the third main beam 13, and the plurality of pegs 10c may be uniformly arranged on the upper surface of the square steel tube 10a along the length direction of the square steel tube 10 a.
In a concrete construction, the concrete hidden beam 20 and the floor slab 2 may be cast in place, that is, fabricated on site, and the first, second and third girders 11, 12 and 13 may be prefabricated in a factory, that is, concrete 10b is poured into a predetermined square steel pipe 10a to form a prefabricated member, and then poured with the concrete hidden beam 20 and the shear wall on site.
The multi-layer precast square concrete filled steel tube connecting beam provided by the embodiment of the invention is characterized in that a plurality of main beams are sequentially and seamlessly overlapped, so that the span-to-height ratio of the formed multi-layer precast square concrete filled steel tube connecting beam is multiple times that of a conventional connecting beam; in addition, the concrete is poured inside the square steel pipe, so that the structural deformability can be improved, the connecting beam is guaranteed to have good ductility, and brittle shear damage of the connecting beam is avoided. In addition, the multilayer prefabricated square steel pipe concrete connecting beam provided by the embodiment of the invention adopts the mode of prefabricated components for a plurality of main beams, and the square steel pipe is used as a template, so that concrete can be conveniently poured inside, meanwhile, the condition of manufacturing the components in a factory can be met, the pouring and maintenance quality of the concrete inside can be well controlled, and the quality of the formed main beams is high. The prefabricated component is adopted, so that the assembly can be realized on site, and the method has the advantages of high construction speed and controllable construction quality.
The multilayer precast square steel pipe concrete connecting beam disclosed by the embodiment of the invention is described in detail, and specific examples are applied to the description of the principle and the implementation mode of the invention, and the description of the above examples is only used for helping to understand the multilayer precast square steel pipe concrete connecting beam and the core idea thereof; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present invention, the present description should not be construed as limiting the present invention in view of the above.
Claims (7)
1. The multilayer prefabricated square steel tube concrete connecting beam is characterized by comprising a concrete hidden beam and a plurality of main beams, wherein the main beams are sequentially and seamlessly overlapped, each main beam comprises a square steel tube and concrete poured inside the square steel tube, and two ends of each main beam along the length direction of the main beam are used for extending into a shear wall;
the concrete hidden beams are hidden in the floor slab, the concrete hidden beams are seamlessly overlapped on the main beams positioned at the top, a plurality of first pegs are arranged in the square steel pipe of each main beam, and the first pegs are uniformly arranged along the length direction of the square steel pipe;
the height of the concrete hidden beam is the same as the thickness of the floor slab, and the concrete hidden beam and the floor slab are integrally formed;
a plurality of longitudinal ribs which are arranged along the length direction of the concrete hidden beam are arranged in the concrete hidden beam, the longitudinal ribs extend into the shear wall, and the total area of the longitudinal ribs is based on the area of the upper wall surface of the square steel pipe of the main beam positioned at the top;
the square steel pipe of each girder comprises two side walls extending along the length direction of the girder, two ends of each side wall are respectively extended with a side plate, and the side plates extend into the shear wall;
the thickness of each side plate is larger than or equal to the thickness of the side wall of the main beam.
2. The multi-layer precast square steel pipe concrete connecting beam according to claim 1, wherein the concrete hidden beam is arranged with the same width as the main beams, and the top surface of the concrete hidden beam is flush with the top surface of the floor slab.
3. A multi-layer precast square concrete filled steel tube tie as set forth in claim 1 wherein each of said side panels is anchored in said shear wall and a second peg is disposed in each of said side panels.
4. The multilayer prefabricated square steel pipe concrete connecting beam according to claim 1, wherein three main beams are respectively a first main beam positioned at the bottom, a second main beam positioned at the middle and a third main beam positioned at the top, and the concrete hidden beams are seamlessly stacked on the third main beam;
a slot is formed in the middle of the second main beam, the slot divides the second main beam into a first part and a second part which are symmetrically arranged relative to the slot, and the first part and the second part are equal in length;
wherein the length of the first portion is the smaller of one third of the net span of the second main beam and the second main beam height.
5. The multi-layer precast square steel pipe concrete connecting beam according to claim 4, wherein a plurality of longitudinal ribs extending and arranged along the length direction of the first main beam are arranged at the bottom of the first main beam, and the longitudinal ribs extend into the shear wall.
6. The multi-layer precast square steel pipe concrete connecting beam according to claim 1, wherein each main beam is a precast member, and square steel pipes of two adjacent main beams are connected by spot welding.
7. A multi-layered precast square steel pipe concrete tie according to any one of claims 1 to 6, wherein the concrete inside the square steel pipe of each main girder is normal concrete, recycled block concrete or recycled aggregate concrete.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710239143.1A CN106869403B (en) | 2017-04-13 | 2017-04-13 | Multilayer prefabricated square steel pipe concrete connecting beam |
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| CN201710239143.1A CN106869403B (en) | 2017-04-13 | 2017-04-13 | Multilayer prefabricated square steel pipe concrete connecting beam |
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| CN106869403B true CN106869403B (en) | 2023-09-26 |
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| CN108018995B (en) * | 2017-11-27 | 2024-03-01 | 深圳大学 | Double-connecting beam structure and construction method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000054780A (en) * | 1998-08-06 | 2000-02-22 | Railway Technical Res Inst | Glued laminated beam and its construction method |
| CN101418631A (en) * | 2008-10-14 | 2009-04-29 | 华南理工大学 | U-shaped steel-coated Regenerated composite beam of and construction method thereof |
| CN104251038A (en) * | 2013-06-29 | 2014-12-31 | 清华大学 | Encased steel plate-concrete composite coupling beam and construction method thereof |
| CN105569266A (en) * | 2016-01-31 | 2016-05-11 | 深圳大学 | Concrete combined connecting beam |
| CN206681262U (en) * | 2017-04-13 | 2017-11-28 | 深圳市建筑设计研究总院有限公司 | A kind of prefabricated Concrete-Filled Square Steel Tube coupling beam of multilayer |
-
2017
- 2017-04-13 CN CN201710239143.1A patent/CN106869403B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000054780A (en) * | 1998-08-06 | 2000-02-22 | Railway Technical Res Inst | Glued laminated beam and its construction method |
| CN101418631A (en) * | 2008-10-14 | 2009-04-29 | 华南理工大学 | U-shaped steel-coated Regenerated composite beam of and construction method thereof |
| CN104251038A (en) * | 2013-06-29 | 2014-12-31 | 清华大学 | Encased steel plate-concrete composite coupling beam and construction method thereof |
| CN105569266A (en) * | 2016-01-31 | 2016-05-11 | 深圳大学 | Concrete combined connecting beam |
| CN206681262U (en) * | 2017-04-13 | 2017-11-28 | 深圳市建筑设计研究总院有限公司 | A kind of prefabricated Concrete-Filled Square Steel Tube coupling beam of multilayer |
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| CN106869403A (en) | 2017-06-20 |
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