CN109779114B - Integral superimposed sheet combination beam - Google Patents
Integral superimposed sheet combination beam Download PDFInfo
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- CN109779114B CN109779114B CN201910072931.5A CN201910072931A CN109779114B CN 109779114 B CN109779114 B CN 109779114B CN 201910072931 A CN201910072931 A CN 201910072931A CN 109779114 B CN109779114 B CN 109779114B
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Abstract
The invention discloses an integral type composite slab beam comprising a plurality of composite sub-beams, wherein the composite sub-beams can be mutually connected and comprise prefabricated layers, a plurality of lap joint reinforcing steel bars are arranged in the prefabricated layers, the side surfaces of the prefabricated layers are provided with abutted seams, and the lap joint reinforcing steel bars are exposed from the abutted seams; the top and the side parts of the plurality of combined sub-beams are covered and connected by the post-pouring layer; the prefabricated layer and the post-cast layer are connected through truss steel bars; the post-cast layer is connected with at least one straight side face of the steel beam through a shear connector. The integral composite beam of the laminated slab, disclosed by the invention, solves the problem of insufficient integrity of the prefabricated slab, improves the integrity of the composite beam component of the laminated slab, and is not easy to generate an unexpected state.
Description
Technical Field
The invention belongs to the field of building materials, and particularly relates to an integral composite slab beam.
Background
The steel-concrete combined beam utilizes the tensile property of steel and the compressive property of concrete, and has the advantage of small self weight compared with the common concrete beam, thereby being widely applied to building structures.
A large amount of wet operation still exists in the field construction of the traditional composite beam, and a large amount of templates are needed during construction. With the advance of assembly type building structures in recent years, a novel integral type laminated slab composite beam is provided, the integral type laminated slab composite beam also has the mechanical property of the traditional composite beam, the integral type laminated slab composite beam is formed by connecting laminated slabs and steel beams into a whole through shear connectors, and the laminated slabs are formed by prefabricated slabs and post-cast layers. The prefabricated slab is used as a part of a floor slab to participate in the stress of the slab, and can play a role of a template in the pouring process of a post-cast layer. Therefore, the integral type composite slab beam has the advantages of reducing the use of templates, improving the construction efficiency, being high in industrialization degree and the like.
The inventor believes that large-area precast slabs are sometimes required in the actual construction of the integrated composite slab. During the construction process, the fabrication and transportation of large-area precast slabs are difficult, and the construction cost is increased. This problem is solved by using prefabricated panels of small dimensions. However, the small-area precast slabs need to be spliced when the integral type composite slab beam is manufactured, so that the integrity of the integral type composite slab beam is reduced.
In the existing literature, chinese patent CN107386508A discloses a splicing joint connection structure and a construction method for prefabricated panels made of two-way concrete by stacking, which specifically shows a splicing process, and the inventor believes that the splicing joint position lacks necessary wood panels and lacks a leveling process, and defects are easy to occur.
In view of the above, it is desirable to provide an integral composite slab beam.
Disclosure of Invention
In order to overcome the defects of the prior art, the integral type composite slab beam is suitable for large-scale use and is not easy to have an unexpected state. The technical scheme adopted by the invention for solving the problems is as follows:
an integral type composite beam of a laminated slab comprises a plurality of composite sub-beams, wherein the composite sub-beams can be mutually connected, each composite sub-beam comprises a prefabricated layer, a plurality of lap-jointed reinforcing steel bars are arranged in each prefabricated layer, the side surfaces of the prefabricated layers are provided with abutted seams, and the lap-jointed reinforcing steel bars are exposed from the abutted seams; the top and the side parts of the plurality of combined sub-beams are covered and connected by the post-pouring layer; the prefabricated layer and the post-cast layer are connected through truss steel bars. The post-cast layer is connected with at least one straight side face of the steel beam through a shear connector. The scheme disclosed by the invention solves the problem of insufficient integrity of the precast slab by combining the precast slab with the post-cast layer, and improves the integrity of the composite beam member of the laminated slab by using the truss steel bars as auxiliary connecting precast layers and post-cast layers.
Furthermore, the steel beam is made of I-shaped steel, the upper flange of the steel beam is also a straight outer side face of the I-shaped steel, the shear connector is connected to the steel beam through a mechanical connection means, the shear connector is embedded into the post-pouring layer, the post-pouring layer connects the prefabricated bottom plate into a whole, and meanwhile the steel beam and the laminated slab are also connected into a whole. The steel beam is an assembly component commonly used by the existing composite beam, and the shear resistance of the steel beam and the post-cast layer can be enhanced by using the shear resistant connecting piece.
Further, the shear connector comprises a first shear connecting plate and a second shear connecting plate which are perpendicular to each other and connected in a T shape, the first shear connecting plate is completely embedded into the post-cast layer, and the second shear connecting plate is perpendicularly connected to the shear connecting plate and the steel beam so as to be embedded into the precast slab. The shear connector has a synergistic effect on improving the shear capacity of the whole laminated slab, and can connect the laminated slab with weaker shear and the steel beam with stronger shear into a whole to transfer the shear burden of the laminated slab.
Furthermore, a plurality of abutted seams are arranged on the peripheral side of the precast slab; and the plurality of combined sub-beams are connected through the lap steel bars in the abutted seams. The splicing seam meets the requirement of lapping of the lapping steel bar, meanwhile, the splicing seam also enables the building layer to extend in the vertical direction, and then the post-cast layer can coat the precast slab from the side surface, so that the connection between the precast layer and the post-cast layer is firmer.
Furthermore, two opposite side faces of the truss reinforcing steel bar are respectively embedded into the prefabricated layer and the post-pouring layer, the arrangement can ensure that the post-pouring layer and the prefabricated layer can form a structure with a large final moment, and the truss reinforcing steel bar can form a stable tensile structure in the prefabricated layer and the post-pouring layer, so that the connection of the prefabricated layer and the post-pouring layer is facilitated.
Furthermore, the direction of the lap steel bars is vertical to that of the truss steel bars, so that the mechanical property of the laminated slab in the plane direction is enhanced at the same time.
The prefabricated layer is internally provided with three auxiliary reinforcing parts, namely truss reinforcing steel bars, lap joint reinforcing steel bars and shear connectors, the three auxiliary reinforcing parts not only enhance the strength of the prefabricated layer, but also enhance the strength of the prefabricated plate in a plane because the lap joint reinforcing steel bars are vertical to the truss reinforcing steel bars.
The truss steel bar is substantially a whole, but in the embodiment, the truss steel bar is divided into two parts, one part is fixed and connected to the precast slab, the other part is fixed and connected to the post-cast layer, and the truss steel bar is used as an auxiliary connecting means between the precast layer and the post-cast layer, so that the function of the truss steel bar material is fully exerted, the connection between the precast slab and the post-cast layer is further consolidated, the material is saved, and the structural weight is reduced. And, since the truss reinforcing steel is a frame structure having a length, a width and a height, it can provide not only a coupling strength in a coupling direction but also a coupling strength in a plane direction, and it is possible to reinforce the strength of both the precast slab and the post-cast layer.
Furthermore, all be equipped with the distribution reinforcing bar in prefabricated layer and the post-cast layer to the pouring of prefabricated layer and post-cast layer is convenient for.
Further, at least one straight side embedding of girder steel the post-cast layer, for the moment that the superimposed sheet transmission can be undertaken to the maximize to the girder steel, the girder steel embedding post-cast layer.
The invention also discloses a manufacturing method of the integral composite slab composite beam, which comprises the following steps:
-welding a shear connector at the upper flange of the steel beam;
-processing the precast slab, wherein truss steel bars are required to be placed in the slab in advance during processing of the precast slab, one part of the truss steel bars is embedded in the precast slab, and the other part of the truss steel bars is embedded in the post-cast layer after the post-cast layer is cast;
-placing one end of the precast slab on the steel beam upper flange, the placing dimension being set according to the design requirements.
Leaving a length of overlap reinforcement at the splicing location of adjacent panels, i.e. at the position of the splice between adjacent panels, where a portion of the formwork is to be laid.
The whole construction plane needs to be leveled after the prefabricated panels are laid and the formworks are supported, and after leveling, a post-cast layer can be poured on the construction plane and poured together with the overlapped parts (splicing positions) of the steel bars of the prefabricated panels, and maintenance is carried out after pouring is finished.
After the maintenance is completed, the adjacent prefabricated panels are connected together by the overlapped steel bars, and the bottom independent prefabricated panels are connected into a whole prefabricated panel.
The leveling comprises the following steps:
1) before laying the combined sub-beam, arranging gradienters at a plurality of measuring points of the mold, and adjusting the levelness of the mold according to the measuring data of the gradienters;
2) laying the combined sub-beams on the template, setting a plurality of measuring points at the vacant positions in the mold again, setting a level meter on the measuring points, and adjusting the levelness of the mold according to the measuring data of the level meter;
the invention has the advantages that:
1) through using truss steel bar connection prefabricated layer and post-cast layer for prefabricated layer and post-cast the connection between the layer more firm, prefabricated layer and post-cast between the layer through the connection of truss steel bar more firm, promote prefabricated layer and post-cast the integrated level that the layer is connected.
2) The use of the shear connector not only enhances the shear resistance of the precast slab in the first place, but also enhances the shear resistance of the post-cast layer due to the improvement of the integration level.
3) By using the truss reinforcing steel bars, the lap reinforcing steel bars and the shear connectors, the three auxiliary reinforcing parts not only enhance the strength of the prefabricated layer, but also enhance the strength of the prefabricated plate in a plane by the lap reinforcing steel bars in the auxiliary reinforcing parts which are perpendicular to the direction of the truss reinforcing steel bars.
4) The construction method is simple, and the problems of difficulty in manufacturing and transporting the large-size precast slab and insufficient integrity of the member caused by the small-size precast slab are solved.
Drawings
FIG. 1 is a sectional view of the components of example 1
FIG. 2 is a top view of the structural member of example 1
FIG. 3 is an elevation view of the components of example 1.
In the drawing, the steel bar distribution structure comprises 1 truss steel bars, 2 lap joint steel bars, 3 abutted joints, 4 prefabricated plates, 5 steel beams, 6 shear connectors, 7 post-cast layers and 8 distributed steel bars.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
It should be noted that the following embodiments are described with reference to the accompanying drawings and practical usage.
The noun explains:
truss reinforcing steel bars and truss structures made of the reinforcing steel bars.
Example 1
An integral type composite beam of a laminated slab comprises a plurality of composite sub-beams, wherein the composite sub-beams can be mutually connected, each composite sub-beam comprises a prefabricated layer, a plurality of lap joint reinforcing steel bars 2 are arranged in each prefabricated layer, splicing seams 3 are arranged on the side surfaces of the prefabricated layers, and the lap joint reinforcing steel bars 2 are exposed from the splicing seams 3; the top and the side parts of the plurality of combined sub-beams are covered and connected by the post-cast layer 7; the prefabricated layer and the post-cast layer 7 are connected through truss steel bars 1. The post-cast layer 7 is connected to at least one flat side of the steel beam 5 by a shear connector 6. The scheme disclosed by the invention solves the problem of insufficient integrity of the precast slab 4 by combining the precast slab 4 with the post-cast layer 7, and improves the integrity of the composite beam member of the laminated slab by using the truss steel bars 1 as auxiliary connecting precast layers and the post-cast layer 7.
In this embodiment, the steel beam 5 is an i-beam, the upper flange of the steel beam 5 is a flat outer side of the i-beam, the shear connector 6 is connected to the steel beam 5 by a mechanical connection means, the shear connector 6 is embedded in the post-cast layer 7, and the post-cast layer 7 connects the precast slabs into a whole and also connects the laminated slab and the steel beam 5 into a whole.
In this embodiment, the shear connector 6 has a T-shaped cross-section, as shown in FIG. 1, to facilitate embedding in the post-cast layer 7.
In this embodiment, the plurality of combined sub-beams are overlapped through the steel bar overlapping part. The steel bar overlapping part is formed by arranging the overlapping steel bars 2 in the prefabricated slab 4 in the manufacturing process of the prefabricated slab 4, and the tail ends of the overlapping steel bars 2 extend out of the main body of the prefabricated slab 4 at the abutted seams 3 to connect a plurality of combined sub-beams.
In order to splice a plurality of combined sub-beams by using the lapping parts of the steel bars, a plurality of splicing seams 3 are arranged on the peripheral sides of the prefabricated plates 4, and the lapping steel bars 2 are arranged in the splicing seams 3. The abutted seam 3 meets the requirement of the overlapped steel bar 2, meanwhile, the abutted seam 3 also enables the building layer to extend in the vertical direction, and then the post-cast layer 7 can coat the precast slab 4 from the side surface, so that the connection between the precast layer and the post-cast layer 7 is firmer.
Prefabricated layer is equipped with truss reinforcing bar 1, truss reinforcing bar 1 is including locating prefabricated in situ portion's rib and locating the outside connecting portion in prefabricated layer, connecting portion can be connected with post-cast layer 7.
That is, there are actually three auxiliary reinforcements in the prefabricated layer, namely, the truss reinforcement 1, the lap reinforcement 2 and the shear connector 6, and these three auxiliary reinforcements not only enhance the strength of the prefabricated layer, but also the lap reinforcement 2 is perpendicular to the truss reinforcement 1, so that the strength of the prefabricated plate 4 in the plane can be enhanced.
The truss reinforcement 1 is substantially a whole, but in the embodiment, the truss reinforcement is divided into two parts, one part is fixed and connected to the precast slab 4, the other part is fixed and connected to the post-cast layer 7, and the truss reinforcement 1 is used as an auxiliary connecting means between the precast layer and the post-cast layer 7, so that the function of the material of the truss reinforcement 1 is fully exerted, the connection between the precast slab 4 and the post-cast layer 7 is further consolidated, the material is saved, and the structural weight is reduced. Also, since the truss reinforcing bars 1 are a frame structure having a length, a width, and a height, which can provide not only a coupling strength in a coupling direction but also a coupling strength in a plane direction, it is possible to simultaneously reinforce the strength of the precast slabs 4 and the post-cast slabs 7.
In the embodiment, regarding the concrete arrangement of the truss steel bars 1, firstly, the truss steel bars 1 can adopt the general steel truss steel bars 1 with four sides, when the precast slabs 4 are manufactured, one side of the truss steel bars 1 is laid into the precast slabs 4, and at the same time, at least a reserved height 1/3 of the truss steel bars 1 protrudes out of the plane of the precast slabs 4 to be used as a connecting piece for connecting the precast slabs 4 and the post-cast layer 7.
The truss steel bars 1 are used for connection, the truss steel bars 1 are parallel to the precast slabs 4, the opposite two sides of the truss steel bars 1 are used for connecting the precast layer and the post-pouring layer 7, the axes of the rods of the truss steel bars 1 and the external force borne by the rods are not on the same plane, therefore, the truss steel bars 1 are used as auxiliary connecting pieces between the precast layer and the post-pouring layer 7, and further, the stress between the precast layer and the post-pouring layer 7 can be released under different conditions, so that the stress can be absorbed and transmitted by the truss steel bars 1.
Meanwhile, because the prefabricated layer and the post-cast layer 7 are respectively built into two opposite surfaces of the truss reinforcing steel bar 1 in the embodiment, the judgment is not difficult, the truss reinforcing steel bar 1 is restrained in the vertical direction to a certain degree, and the strength of the whole truss reinforcing steel bar in the extending direction is improved.
The beneficial effects of the invention are as follows:
1) connect prefabricated layer and post-cast layer 7 through using truss reinforcing bar 1 for prefabricated layer and the connection of post-cast between the layer 7 are more firm, and the prefabricated layer is more firm with the connection through truss reinforcing bar 1 between the post-cast layer 7, promotes prefabricated layer and the wholeization level of post-cast layer 7 connection.
2) The shear resistance of the post-cast layer 7 can be enhanced by using the shear connectors 6.
3) By using the truss reinforcing steel bars 1, the lap reinforcing steel bars 2 and the shear connectors 6, the three auxiliary reinforcing members not only enhance the strength of the prefabricated layer, but also enhance the strength of the prefabricated plate 4 in a plane by the lap reinforcing steel bars 2 which are vertical to the truss reinforcing steel bars 1.
Example 2
A manufacturing method of an integral type laminated slab combination beam comprises the following steps:
welding a shear connector 6 at the upper flange of the steel beam 5;
processing the precast slabs 4, wherein the truss steel bars 1 are required to be placed in the precast slabs 4 in advance during processing of the precast slabs 4, one part of the truss steel bars 1 is embedded in the precast slabs 4, and the other part of the truss steel bars 1 is embedded in the post-cast layer after the post-cast layer is cast;
one end of the prefabricated slab 4 rests on the upper flange of the steel beam 5, the resting dimensions being set according to the design requirements.
Leaving a certain length of overlap reinforcement 2 at the splicing position of adjacent prefabricated panels 4, wherein the position of the overlap reinforcement 2 is also the position of the seam 3 between the adjacent prefabricated panels 4, and a part of the formwork is laid below the seam 3.
Laying prefabricated slabs 4, and overlapping two sides of adjacent prefabricated slabs 4 through overlapping steel bars 2, wherein a gap is reserved between the adjacent prefabricated slabs 4.
The whole construction plane needs to be leveled after the prefabricated panels 4 are laid and the formworks are supported, a post-cast layer can be poured on the construction plane after leveling, the post-cast layer and the joints 3 of the prefabricated panels 4 are poured together, and maintenance is carried out after pouring is finished.
After the maintenance is completed, the adjacent prefabricated panels 4 are connected together by the overlap reinforcement 2, and the individual prefabricated panels 4 at the bottom are connected into an integral prefabricated panel 4.
In the embodiment 1, the positions of the plurality of combined sub-beams are preliminarily determined through the seams 3, and the plurality of combined sub-beams are also preliminarily connected through the seams 3, so that the seams 3 need to be manufactured in the process of manufacturing the precast slab 4, and the manufacturing process of the seams 3 is that a part of templates are laid at the seams 3 in the manufacturing process of the combined sub-beams, and after pouring, the templates are removed, so that the seams 3 are formed at the seams 3. The term "patchwork" 3 is defined herein as forming a plurality of grooves on the peripheral side of the composite sub-beam so that the reinforcing bars in the grooves are exposed to facilitate bar splicing.
In this embodiment, the groove may penetrate through the upper and lower surfaces of the combined sub-beam, or may be a groove provided on only one of the upper and lower surfaces.
In the casting in the present embodiment, since the casting is performed after the lap joint is completed, it is necessary to consider filling the joints 3 at the time of casting, and to avoid a decrease in casting quality due to uneven filling of the joints 3, and in general, the unset post-cast layer 7 after casting is vibrated by an external vibration source to eliminate air bubbles in the post-cast layer 7.
The leveling in this embodiment refers to leveling among a plurality of combined sub-beams, and when a plurality of combined sub-beams need to be poured together, due to various errors, an inclination angle may be generated among a plurality of combined sub-plates, and the combined sub-plates are generally arranged in the same mold before pouring, which may cause a problem that the levelness of the mold is guaranteed first, and thus the levelness of the poured integrated composite slab combination beam is guaranteed only. Therefore, in the process, a leveling procedure is required to be added for leveling the plurality of combined sub-beams and the die, and the method specifically comprises the following steps:
1) before laying the combined sub-beam, arranging gradienters at a plurality of measuring points of the mold, and adjusting the levelness of the mold according to the measuring data of the gradienters;
2) laying the combined sub-beams on the template, setting a plurality of measuring points at the vacant positions in the mold again, setting a level meter on the measuring points, and adjusting the levelness of the mold according to the measuring data of the level meter;
and a space with a designed width exists between the adjacent prefabricated plates 4, namely, an integral seam is formed. The lap steel bars 2 are reserved in advance according to design when the precast slabs 4 are processed, templates need to be laid at the positions of the joints 3 when the lap steel bars 2 are reserved in the joints 3, and the precast slabs 4 need to be leveled after the prefabricated slabs 4 are laid, so that all the precast slabs 4 are at the same horizontal height, and the construction quality of the member is guaranteed. The post-cast layer is cast together with the joints 3 between the precast slabs 4, as shown in the elevation of the member of fig. 3. After pouring, maintenance is carried out, so that all the small-sized prefabricated plates 4 at the bottom can be connected into a whole by the manufacturing method, and the integrity of the member is enhanced. And after the maintenance is finished, the integral composite slab beam is obtained.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (6)
1. An integral type composite beam of a laminated slab is characterized by comprising a plurality of composite sub-beams, wherein the composite sub-beams can be mutually connected and comprise prefabricated layers, a plurality of lap-jointed reinforcing steel bars are arranged in the prefabricated layers, the side surfaces of the prefabricated layers are provided with abutted seams, and the lap-jointed reinforcing steel bars are exposed out of the abutted seams; the top and the side parts of the plurality of combined sub-beams are covered and connected by the post-pouring layer; the prefabricated layer and the post-cast layer are connected through truss steel bars; the post-cast layer is connected with at least one straight side surface of the steel beam through a shear connector;
the anti-shearing connecting piece comprises a first anti-shearing connecting plate and a second anti-shearing connecting plate which are perpendicular to each other and connected in a T shape, the first anti-shearing connecting plate is completely embedded into the post-cast layer, and the second anti-shearing connecting plate is perpendicularly connected to the anti-shearing connecting plate and the steel beam;
the direction of the lap steel bar is vertical to that of the truss steel bar.
2. The integrated composite slab composite girder according to claim 1, wherein the steel girder has an i-shaped cross-section, one flange of the steel girder is connected to a shear connector, and the shear connector is embedded in the post-cast layer.
3. The integrated composite slab composite beam according to claim 1, wherein a plurality of patchworks are provided on the peripheral side of the precast slab; and the plurality of combined sub-beams are connected through the lap steel bars in the abutted seams.
4. The integrated composite slab composite beam according to claim 1, wherein the two opposite sides and/or sides of the truss reinforcement are embedded in the precast layer and the post-cast layer, respectively; two opposite side surfaces of the truss reinforcing steel bars embedded into the prefabricated layer and the post-cast layer respectively do not coincide with the plane where the lap joint reinforcing steel bars are located.
5. The integrated composite slab composite beam according to claim 1, wherein the precast layer and the post-cast layer are provided with the subsection reinforcing bars.
6. A manufacturing method of an integral type laminated slab combination beam comprises the following steps:
-welding a shear connector at the upper flange of the steel beam;
-processing the precast slab, wherein truss steel bars are required to be placed in the slab in advance during processing of the precast slab, one part of the truss steel bars is embedded in the precast slab, and the other part of the truss steel bars is embedded in the post-cast layer after the post-cast layer is cast;
-resting one end of the precast slab on the steel beam upper flange;
leaving a certain length of overlap steel bars at the splicing positions of the adjacent prefabricated panels, namely the positions of the splicing joints between the adjacent prefabricated panels, and laying a part of formworks at the splicing positions;
the whole component plane needs to be leveled after the prefabricated slab is laid and the formwork is supported, a post-cast layer can be poured above the prefabricated slab plane after leveling, the post-cast layer and the overlapped part of the steel bars of the prefabricated slab are poured together, and maintenance is carried out after pouring is finished;
after the maintenance is finished, the adjacent prefabricated panels are connected together through the overlapped steel bars, and the independent prefabricated panels at the bottom are connected into an integral prefabricated panel;
the leveling comprises the following steps:
1) before laying the combined sub-beam, arranging gradienters at a plurality of measuring points of the mold, and adjusting the levelness of the mold according to the measuring data of the gradienters;
2) and laying the combined sub-beams on the template, setting a plurality of measuring points at the vacant positions in the mold again, setting a level gauge on the measuring points, and adjusting the levelness of the mold according to the measuring data of the level gauge.
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| CN111173182A (en) * | 2019-12-27 | 2020-05-19 | 山东建筑大学 | Floor detachable assembled floor |
| CN111794423A (en) * | 2020-07-16 | 2020-10-20 | 山东建筑大学 | Steel-concrete combined beam structure, building and construction method |
| CN111794425A (en) * | 2020-07-17 | 2020-10-20 | 山东建筑大学 | Separated laminated slab honeycomb combination beam and method |
| CN111794424A (en) * | 2020-07-17 | 2020-10-20 | 山东建筑大学 | Integral laminated slab honeycomb combination beam and manufacturing method thereof |
| CN112942681A (en) * | 2021-03-15 | 2021-06-11 | 重庆大学 | Assembled truss concrete beam capable of being quickly replaced after earthquake |
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| CN1587575A (en) * | 2004-06-30 | 2005-03-02 | 清华大学 | Steel-concrete folding plate combined beam |
| CN204252345U (en) * | 2014-11-20 | 2015-04-08 | 宝钢建筑***集成有限公司 | The connecting structure of a kind of precast concrete plank and girder steel |
| CN206267317U (en) * | 2016-11-11 | 2017-06-20 | 浙江绿筑集成科技有限公司 | The connecting structure of SP prestressed cored slabs and H profile steel beam |
| CN207419803U (en) * | 2017-11-10 | 2018-05-29 | 广州远大住宅工业有限公司 | A kind of high-strength connection structure of laminated floor slab and girder steel |
| CN108222347B (en) * | 2018-03-03 | 2020-08-28 | 北京工业大学 | Assembled large module welding laminated beam slab with plane truss temporary support |
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