CN111173120A - Laminated floor slab splicing structure, construction method thereof and residential system with combined structure - Google Patents

Abstract

The invention relates to the technical field of buildings, in particular to a composite floor slab splicing structure, a construction method thereof and a combined structure residential system. The laminated floor slab splicing structure comprises a steel reinforcement framework and two floor slabs arranged at intervals; one end of the floor slab, which is positioned on the splicing surface, is provided with an installation notch; the bottom of the mounting opening is sequentially and vertically fixed with floor slab ring ribs at intervals; the steel bar framework comprises a connecting horizontal bar and a plurality of connecting ring bars; the plurality of connecting ring ribs and the plurality of floor slab ring ribs on the two floor slabs are arranged in a staggered mode; concrete is poured on the connecting ring ribs and the floor slab ring ribs. The structure of the invention greatly improves the site construction speed, reduces the construction difficulty, has simple construction process, does not produce ribs on four sides of the precast slab, is convenient for factory automatic batch production, and greatly reduces the production cost; the stress performance is good, the integrity is strong, and the structural integrity of the assembly integral type mode is strong. The on-site assembly construction has high construction efficiency, and the dense rib structure greatly reduces the dead weight of the floor and the consumption of concrete, and reduces the cost.

Description

Laminated floor slab splicing structure, construction method thereof and residential system with combined structure

Technical Field

The invention relates to the technical field of buildings, in particular to a composite floor slab splicing structure, a construction method thereof and a combined structure residential system.

Background

The cast-in-place floor slab has the advantages of good structural integrity and good anti-seismic performance, but is labor-consuming, needs a large number of templates, has long construction period and is difficult to realize industrial production. The prefabricated floor slab is easy to realize the industrialization of building components, the manufacturing of the components is not limited by seasons and climate, the quality of the components can be improved, the construction speed is high, a large amount of templates and supports can be saved, but the integrity is poor, the earthquake resistance is not facilitated, and the impermeability is poor. The laminated slab can combine the advantages of the cast-in-place slab and the prefabricated slab, and has the advantages of high construction speed, short construction period, light weight of prefabricated components, good integrity, template saving, low requirement on hoisting capacity and the like.

The truss reinforced concrete composite slab is formed by integrally pouring a reinforced truss and a concrete bottom plate into a prefabricated part, and pouring a composite layer of concrete to form an integrally stressed composite floor slab after field installation is finished. The truss reinforced concrete composite slab has the advantages of partial assembly, reduction of partial on-site formwork support, consideration of use of the bidirectional slab, acceleration of the overall construction progress and the like. But the truss reinforced concrete composite slab also has the defects and shortcomings of insufficient assembly degree, troublesome transportation of the steel bar truss plates, easy damage, thicker total thickness of the floor slab, difficult field construction of the steel bar truss plates and the like. The steel bar truss plates are connected with each other in the lateral direction of the cast-in-place beam, and anchoring steel bars are pre-embedded in advance in the early stage of manufacturing the steel bar truss plates, which are commonly called as 'beard bars'. However, in the transportation and construction process, the 'beard ribs' may be damaged or deformed, which brings trouble to the site construction, and meanwhile, the beard ribs extending out of the four sides of the steel bar truss plates cause that the factory is difficult to automatically produce, the production efficiency is low, and the cost is high; the integral joint structure between the steel bar truss plates needs on-site formwork support, the process is complex, the construction is difficult, and the construction efficiency of the steel bar truss plates is reduced.

Therefore, the development of a novel precast concrete floor structure and a construction method thereof is one of the key technical problems to be solved urgently in the current assembly type steel structure building industry.

Disclosure of Invention

The invention aims to provide a composite floor slab splicing structure, a construction method thereof and a combined structure residential system, and aims to solve the technical problems that four edges of the composite floor slab are low in rib production efficiency and integral type splicing on-site construction is complex in the prior art.

In order to solve the technical problem, the splicing structure of the composite floor slab comprises a steel reinforcement framework and two floor slabs which are arranged at intervals; one end of the floor slab, which is positioned on the splicing surface, is provided with an installation notch; the bottom of the mounting gap is sequentially and vertically fixed with floor slab ring ribs at intervals along the length direction of the splicing surface of the floor slab; the steel bar framework comprises a connecting horizontal rib and a plurality of connecting annular ribs, wherein the connecting horizontal rib is arranged along the length direction of the splicing surface, and the connecting annular ribs are fixed with the connecting horizontal rib; the connecting annular ribs are parallel to the floor slab annular ribs; the plurality of connecting annular ribs and the plurality of floor slab annular ribs on the two floor slabs are arranged in a staggered mode; concrete is poured on the connecting annular ribs and the floor slab annular ribs.

Further, the floor slab comprises a bottom plate and a light filling body positioned on the bottom plate; the bottom plate is internally provided with a bottom horizontal rib perpendicular to the connecting horizontal rib, and one end of the bottom horizontal rib positioned on the splicing surface is bent to the other end to form a ring rib of the floor slab.

Furthermore, a steel bar truss is arranged at one end, far away from the splicing surface, of each bottom plate; reinforcing steel bar meshes are arranged at the upper ends of the two light filling bodies, and the two ends of each reinforcing steel bar mesh are respectively connected with the reinforcing steel bar trusses of the two floor slabs; concrete is poured on the steel bar truss and the steel bar mesh.

Furthermore, a first lap joint steel bar is arranged at the splicing position of the two floor slabs; and two ends of the first lap joint reinforcing steel bar are respectively positioned on the two bottom plates of the floor slab.

Furthermore, I-shaped steel beams are arranged at the splicing positions of the two floor slabs; the web plate of the steel beam is vertically arranged; the connecting ring rib is fixed with the web plate of the steel beam.

Furthermore, steel plates are sequentially fixed on two sides of the steel beam web plate at intervals along the length direction of the steel beam web plate; the steel plates on the two sides of the steel beam web plate correspond to one another; the steel plate is provided with a through hole; the connecting ring ribs penetrate through the through holes of the two correspondingly arranged steel plates.

Furthermore, the lower end of the connecting ring rib is provided with an opening, and two end parts of the opening are respectively bent downwards and vertically penetrate through the through holes at two ends of the steel plate.

Further, the flanges at the upper ends of the steel beams are shorter than the flanges at the lower ends of the steel beams; a supporting groove is formed in the bottom of one end, located on the splicing surface, of the bottom plate; the two ends of the flange at the lower end of the steel beam are respectively positioned in the supporting grooves of the two bottom plates.

Furthermore, a plurality of through holes are sequentially formed in the steel beam along the length direction of the steel beam, and second lap-joint steel bars penetrate through the through holes; and two ends of the second lap joint reinforcing steel bar are respectively positioned in the two floor slabs.

Further, the anti-cracking steel bar is also included; one end of the anti-cracking steel bar is located on the lower end flange of the steel beam, and the other end of the anti-cracking steel bar is located in the bottom plate.

Furthermore, a plurality of pegs are sequentially arranged on the upper flange of the steel beam along the length direction of the upper flange of the steel beam at intervals.

Further, the light filling body comprises a polystyrene board and a plastic formwork.

In a second aspect, the present invention further provides a construction method of a splicing structure of laminated floor slabs, including the following steps:

placing two floor slabs adjacently at intervals so that the installation gaps of the two floor slabs are adjacent;

a plurality of connecting ring reinforcements of the steel reinforcement framework and a plurality of floor slab ring reinforcements on two floor slabs are arranged in a staggered manner;

and pouring concrete to the steel reinforcement framework and the floor slab ring rib.

Furthermore, a steel bar truss is fixed on one side of the bottom plate, the opposite side of the bottom plate is fixedly connected with the ring rib, and a light filling body is arranged between the steel bar truss and the connecting ring rib on the bottom plate to form the floor slab.

Further, binding top steel bars at the tops of the two light filling bodies to form a steel bar mesh, and enabling two ends of the steel bar mesh to be lapped on the steel bar trusses of the two floor slabs; and pouring concrete to the reinforcing mesh and the reinforcing steel bar truss.

Further, will a plurality of link ring muscle of framework of steel reinforcement and two after a plurality of floor slab ring muscle on the floor all crisscross the setting, still include following step:

the first lap-jointed steel bars are placed at the splicing positions, and the two ends of the first lap-jointed steel bars are respectively placed on the bottom plates of the two floor slabs.

Furtherly, with two the adjacent interval of floor is placed to the installation opening that makes two floors is adjacent, all crisscross setting a plurality of connecting ring muscle of framework of steel reinforcement and a plurality of floor ring muscle on two floors, specifically includes following step:

perforating a steel plate;

welding the steel plates on two sides of a web plate of the I-shaped steel beam;

placing an I-shaped steel beam so that a web plate of the steel beam is vertically arranged;

placing two floor slabs on two sides of a web plate of the I-shaped steel beam respectively;

the lower end of the connecting ring rib is opened, two end parts at the opening are bent downwards, and the two end parts at the opening of the connecting ring rib vertically penetrate through the through hole in the steel plate.

Further, after vertically penetrating the two end parts at the opening of the connecting ring rib through the through hole in the steel plate, the method further comprises the following steps:

a plurality of through holes are sequentially arranged on the steel beam web plate along the length direction of the steel beam web plate at intervals, the second lap-jointed reinforcing steel bars penetrate through the through holes, and the two ends of the second lap-jointed reinforcing steel bars are respectively positioned in the two floor slabs.

By adopting the technical scheme, the invention has the following beneficial effects:

according to the laminated floor splicing structure provided by the invention, the floor ring ribs are arranged at the mounting notches, the connecting ring ribs of the steel reinforcement framework and the floor ring ribs are arranged in a staggered mode during splicing, and concrete is poured to connect and fix the splicing nodes. The stress of the composite floor slab on one side is transmitted to the steel reinforcement framework through the floor slab ring rib on the side, and the steel reinforcement framework transmits the stress to the connecting ring rib of the composite floor slab on the other side, and the composite floor slab on the other side is stressed. The construction can be carried out without formwork among the structural slab joints, the site construction speed is greatly improved, the construction difficulty is reduced, the construction process is simple, the beard ribs do not need to be arranged on the laminated floor slab, no ribs are arranged on four sides of the prefabricated slab, the automatic batch production of a factory is facilitated, and the production cost can be greatly reduced; the floor system has good stress performance, strong integrity, good stress performance of the dense rib structure and strong structural integrity in an integral assembling mode. And the construction efficiency is high due to on-site assembly construction. The light material is used for filling to form the multi-ribbed hollow floor slab, so that the self weight of the floor slab and the consumption of concrete are greatly reduced, and the cost is reduced.

In a third aspect, the invention also discloses a combined structure residential system with the composite floor slab splicing structure, which comprises: the steel beam, the column body, the shear wall and the composite floor slab; the laminated floor slab is provided with the laminated floor slab splicing structure.

Further, the column body comprises a round steel pipe and a plurality of T-shaped steels; concrete is poured in the circular steel tube, the T-shaped steels are arranged at intervals along the circumferential direction of the circular steel tube, and one ends, opposite to the web plate and the flange, of the T-shaped steels are fixedly connected with the outer wall of the circular steel tube; the web of the T-shaped steel is located on the diameter extension line of the circular steel tube, and the flange is provided with a bolt hole.

Furthermore, the number of the T-shaped steel is two, and webs of the two T-shaped steel are located on the same diameter of the round steel pipe to form a straight line shape.

Furthermore, the number of the T-shaped steels is more than 3, and the T-shaped steels are uniformly distributed at intervals in the circumferential direction of the circular steel tube.

Further, the number of the T-shaped steel is two, and webs of the two T-shaped steel are perpendicular to form an L shape; or the number of the T-shaped steels is three, and webs of the three T-shaped steels are arranged in a T shape; or, the number of the T-shaped steel is four, and webs of the T-shaped steel are arranged in a cross shape.

Furthermore, a first circular exhaust hole is formed in the position, close to the outer wall of the round steel pipe, of the round steel pipe along the axial direction of the round steel pipe; the diameter of the first circular vent hole is larger than or equal to 12 mm.

The column body provided by the invention is composed of a circular steel tube and a plurality of T-shaped steels, the circular steel tube concrete is positioned near the neutralizing shaft and mainly bears the axial force, the advantage of good axial pressure mechanical property of the circular steel tube concrete is fully exerted, the T-shaped steels are arranged far away from the neutralizing shaft, the force arm is increased, the bending resistance bearing capacity is greatly improved, and thus the bending resistance mechanical property is greatly improved. Simultaneously, T shaped steel is located the outside and is convenient for connect, has realized beam column node, post and the vertical concatenation node full bolted connection of post, also promptly, and the cylinder all passes through bolted connection with girder steel and upper and lower post. And during connection, the steel column can be prevented from being exposed outside the wall body, and the aim of hiding the column in the wall body is fulfilled.

Further, the device also comprises a cantilever plate. In a horizontal projection plane, the laminated floor slab is arranged indoors, and the cantilever plate is arranged outdoors; the laminated floor slab is connected with the cantilever slab through a cold and heat bridge prevention node; the cold and heat bridge prevention node comprises a sandwich plate, a first steel bar base plate and a second steel bar base plate;

the sandwich plate comprises a first metal panel, a second metal panel, a plurality of node connecting pieces, an annular sealing plate and a heat insulating material; the annular sealing plate is fixedly connected between the first metal panel and the second metal panel which are oppositely arranged, and surrounds the first metal panel and the second metal panel to form a sealed cavity; one end of the node connecting piece is fixedly connected with the first metal panel, the other end of the node connecting piece is fixedly connected with the second metal panel, and the node connecting piece is arranged in the sealed cavity; the heat insulation material is filled in the sealed cavity;

welding the first reinforcing steel bar base plate on the surface of one side of the first metal panel, which is far away from the second metal panel, and welding a plurality of floor reinforcing steel bars which extend towards the indoor side and enter the laminated floor slab on the first reinforcing steel bar base plate;

the second metal panel deviates from the surface of one side of the first metal panel is welded with a second steel bar base plate, and a plurality of cantilever plate steel bars which extend to the outdoor side and enter the cantilever plate are welded on the second steel bar base plate.

The cantilever plate can be a cantilever balcony, a cantilever air-conditioning plate, a rain shielding plate and other members.

Preferably, the node connecting piece is a connecting pipe, a connecting rod, a honeycomb plate or a corrugated plate;

when the node connecting piece is a connecting pipe, heat insulation materials are filled in the connecting pipe.

Preferably, the node connectors and the annular sealing plates are made of fibre reinforced composite material or plastic. And preferably, the heat insulating material is rock wool or foamed polyurethane.

Further, the device also comprises a constraint support; the two ends of the constraint support are respectively and fixedly connected with the middle part of the column body and the middle part of the steel beam;

the restraint support comprises an outer restraint sleeve, an inner core, a restraint ring and a restraint rod which are all arranged in the outer restraint sleeve;

the restraint rod and the inner core are arranged along the length direction of the outer restraint sleeve, and the restraint ring is fixed with the outer restraint sleeve and sleeved outside the inner core and the restraint rod so as to fix the inner core and the restraint rod.

Further, the inner core is in a strip plate shape; the two sides of the inner core are provided with the restraint rods; or, the inner core is a long strip with a cross-shaped section, and the four cross-shaped intervals are provided with the restraint rods.

Further, the restraint ring comprises a plurality of annular restraint reinforcing steel bars sleeved outside the inner core and the restraint rods; and the annular constraint steel bars are sequentially arranged at intervals along the length direction of the constraint rod.

Further, the restraint ring is an annular restraint reinforcing steel bar spirally wound outside the inner core. Wherein, the annular restraint reinforcing bar is preferably smooth round reinforcing bar.

Further, the restraint rods are steel rods; and the steel bar is welded and fixed with the plain round steel bar.

Further, an anti-friction layer is arranged between the restraint rod and the inner core so as to reduce the frictional resistance between the restraint rod and the inner core.

Furthermore, the outer constraint sleeve is made of mortar, and a reinforcing structure is arranged in the outer constraint sleeve; the reinforcing structure is a steel wire mesh or a glass fiber mesh; the steel wire mesh or the glass fiber mesh is arranged along the circumferential direction of the outer constraint sleeve.

Furthermore, the two ends of the inner core are respectively provided with a connecting end extending out of the outer restraining sleeve; the width of the connecting end is larger than the width of the inner core in the outer constraint sleeve (the middle width of the inner core); the connecting end is provided with a mounting hole. The constraint support piece is connected with the steel beam and the column body through the mounting hole in the connecting end.

The buckling restrained brace, the restraint rod and the restraint ring restrain buckling of the inner core and limit local buckling of the inner core, so that the performance of the core plate can be fully exerted, meanwhile, only the restraint ring is sleeved outside the inner core and the restraint rod to fix during processing, the requirement is low, and special factory processing is not needed during the operation, so that the processing is simple and convenient, and the operation is easy. The restraint rods are steel rods, the inner cores are steel cores, the restraint rings are made of round optical steel bars which are common materials, and therefore cost is low and economical efficiency is good. The outer constraint sleeve is made of mortar, so that the buckling restrained brace is prevented from being corroded, and the outer constraint sleeve is free of maintenance in the service life.

Furthermore, the flange of the T-shaped steel close to the outdoor side in the column body is an outer side flange, and the outer side flange is arranged in parallel with the wall surface of the wall body; the outer side end surface of the outer side flange is coated with an outer anticorrosive layer; and a plurality of layers of glass wool boards are laid on the outer side of the anticorrosive layer of the outer side flange and used for blocking the heat flow transmitted between the indoor side and the outdoor side of the wall body by the cylinder body as a heat bridge.

The heat bridge effect at the column is effectively eliminated, the overall heat insulation performance of the building is improved, and meanwhile, the influence of external temperature change on the outer anticorrosive coating can be effectively weakened by the plurality of layers of glass wool boards; the effective anticorrosion period of the anticorrosion layer is prolonged.

Furthermore, a flange of the T-shaped steel close to one indoor side in the column body is an inner side flange, the inner side flange is arranged in parallel with the wall surface of the wall body, and an inner anticorrosive layer is coated on the outer side surface of the inner side flange; and no thermal insulation material is laid outside the inner anti-corrosion layer of the inner flange.

Because the indoor humiture changes less, and is comparatively stable, be favorable to the inner anticorrosive coating to keep effective for a long time from this, utilize the heat bridge effect of cylinder self, and combine the cotton board of glass outside the outside edge of a wing to block the heat bridge to weaken the temperature variation fluctuation of outside edge of a wing outer anticorrosive coating department greatly, thereby prolong the effective life-span of outer anticorrosive coating more effectively, thereby improved the corrosion resisting property of cylinder on the whole.

Drawings

Fig. 1 is a schematic structural diagram of a splicing structure of a composite floor slab provided in embodiment 1 of the present invention;

FIG. 2 is a cross-sectional view taken along plane 1-1 of the composite floor slab splice structure of FIG. 1;

FIG. 3 is a cross-sectional view of the composite floor slab splice of FIG. 1 taken along the plane 2-2;

FIG. 4 is a cross-sectional view of the composite floor slab splice of FIG. 1 taken along the plane 3-3;

fig. 5 is a schematic structural view of a steel reinforcement cage according to embodiment 1 of the present invention;

fig. 6 is another structural schematic view of the steel reinforcement cage of fig. 5;

FIG. 7 is a schematic structural view of the floor slab joint of example 1 after concrete is poured;

fig. 8 is a schematic structural view of a laminated floor slab splicing structure according to another embodiment of example 1;

figure 9 is a cross-sectional view of the composite floor slab splice of figure 8 taken across the plane 5-5;

figure 10 is a cross-sectional view through plane 6-6 of the composite floor slab splice of figure 8;

figure 11 is a cross-sectional view through plane 7-7 of the composite floor slab splice of figure 8;

FIG. 12 is a schematic view of the composite floor slab splice of FIG. 9 after concrete has been poured;

FIG. 13 is a schematic view of the composite floor slab splice of FIG. 10 after concrete has been poured therein;

FIG. 14 is a schematic structural view of a steel beam according to an embodiment of the present invention;

FIG. 15 is another structural schematic view of the steel beam of FIG. 14;

FIG. 16 is a first structural view showing the construction of a composite floor slab splicing structure according to example 1;

fig. 17 is a second structural diagram in the construction of the composite floor slab splicing structure according to embodiment 1;

FIG. 18 is a third schematic view showing a construction of a composite floor slab splicing structure according to embodiment 1;

FIG. 19 is a fourth structural diagram illustrating the construction of a composite floor slab splicing structure according to embodiment 1;

fig. 20 is a fifth structural diagram in the construction of the composite floor slab splicing structure according to embodiment 1;

fig. 21 is a sixth structural view illustrating the construction of the composite floor slab splicing structure according to embodiment 1;

fig. 22 is a first structural view illustrating the construction of a splicing structure of laminated floors according to another embodiment of example 1;

fig. 23 is a second structural view illustrating the construction of a splicing structure of laminated floors according to another embodiment of example 1;

FIG. 24 is a third schematic view showing a construction of a splicing structure of laminated floors according to another embodiment of example 1;

fig. 25 is a fourth structural view illustrating the construction of a splicing structure of laminated floors according to another embodiment of example 1;

fig. 26 is a fifth structural view illustrating a construction of a splicing structure of laminated floors according to another embodiment of example 1.

Figure 27 is a schematic structural view of a floor in embodiment 2 of the present invention;

fig. 28 is a schematic structural diagram of a cold-hot bridge prevention node in embodiment 2 of the present invention;

FIG. 29 is a schematic view of the structure of the annular sealing plate in embodiment 2 of the present invention;

FIG. 30 is a schematic view showing the layout of the constraining supports in example 3;

FIG. 31 is a cross-sectional view AA in FIG. 30;

FIG. 32 is a side view of a cruciform inner core 62 of example 3;

FIG. 33 is a cross-sectional view of FF in FIG. 31;

fig. 34 is a schematic structural view of a linear column provided in embodiment 4 of the present invention;

FIG. 35 is a schematic structural view of a cross-shaped pillar provided in example 4 of the present invention;

fig. 36 is a schematic structural view of an L-shaped column provided in embodiment 4 of the present invention;

FIG. 37 is a schematic structural view of a T-shaped column provided in embodiment 4 of the present invention;

fig. 38 is a schematic view of a pillar bridge cut-off structure in example 5 of the present invention.

Detailed Description

The present invention will be further explained with reference to specific embodiments.

Example 1

As shown in fig. 1 to 7, the splicing structure of the composite floor slab provided by this embodiment includes a steel reinforcement framework and two floor slabs arranged at intervals; one end of the floor slab, which is positioned on the splicing surface, is provided with an installation notch; the bottom of the mounting gap is sequentially and vertically fixed with floor slab circular ribs 4 at intervals along the length direction of the splicing surface of the floor slab; the steel bar framework comprises a connecting horizontal rib 9 and a plurality of connecting annular ribs 5, wherein the connecting horizontal ribs 9 are arranged along the length direction of the splicing surface; the connecting ring rib 5 is parallel to the floor slab ring rib 4; the connecting annular ribs 5 and the floor slab annular ribs 4 on the two floor slabs are arranged in a staggered mode; concrete 12 is poured on the connecting annular ribs 5 and the floor slab annular ribs 4.

The coincide floor mosaic structure that this embodiment provided sets up floor ring muscle 4 in installation opening department, and when the concatenation, with framework of steel reinforcement's connecting ring muscle 5 and the crisscross setting of floor ring muscle 4 to concreting 12 can be connected fixedly with the concatenation node. The stress of the composite floor slab on one side is transmitted to the steel reinforcement framework through the floor slab ring rib 4 on the side, and the steel reinforcement framework transmits the stress to the connecting ring rib 5 of the composite floor slab on the other side and the composite floor slab on the other side is stressed. The construction can be carried out without formwork among the structural slab joints, the site construction speed is greatly improved, the construction difficulty is reduced, the construction process is simple, the beard ribs do not need to be arranged on the laminated floor slab, no ribs are arranged on four sides of the prefabricated slab, the automatic batch production of a factory is facilitated, and the production cost can be greatly reduced; the floor system has good stress performance, strong integrity, good stress performance of the dense rib structure and strong structural integrity in an integral assembling mode. And the construction efficiency is high due to on-site assembly construction.

The ring rib is a structure similar to a ring in shape, and can be closed or provided with an opening.

Preferably, the floor slab ring reinforcement 4 is a closed ring reinforcement.

Preferably, connect horizontal muscle 9 and be a plurality of, a plurality of connect horizontal muscle 9 along the circumference of link muscle 5 interval setting in proper order, improve with the joint strength of link muscle 5 and the joint strength of concatenation node.

As shown in fig. 1-7, on the basis of the above embodiment, further, the floor slab comprises a bottom plate 2 and a light filling body 1 positioned on the bottom plate 2; the bottom plate 2 is internally provided with a bottom horizontal rib 3 vertical to the connecting horizontal rib 9, and one end of the bottom horizontal rib 3 positioned on the splicing surface is bent to the other end to form a ring rib 4 of the floor slab. This embodiment sets up bottom level muscle 3 in bottom plate 2, and the one end of bottom level muscle 3 is directly buckled and is formed floor ring muscle 4, and processing is convenient.

Preferably, a bottom steel bar perpendicular to the bottom horizontal bar 3 is arranged in the bottom plate 2, and the bottom steel bar is parallel to the connecting horizontal ring bar.

The lightweight filling body 1 of the invention is formed by lightweight materials in the industry, such as polystyrene boards, plastic formworks and the like.

On the basis of the above embodiment, further, a steel bar truss 7 is arranged at one end of each bottom plate 2 far away from the splicing surface; the upper ends of the two light filling bodies 1 are provided with reinforcing mesh 6, and the two ends of the reinforcing mesh 6 are respectively connected with the steel bar trusses 7 of the two floor slabs; the steel bar truss 7 and the steel bar mesh 6 are poured with concrete 12. One side of the bottom plate 2 is provided with a steel bar truss 7, the other side is provided with a floor slab annular rib 4, the top is provided with a steel bar mesh 6, and concrete 12 is poured into the steel bar truss 7, the floor slab annular rib 4 and the steel bar mesh 6 to fix the two floor slabs, so that the connection strength can be further enhanced.

Specifically, the mesh reinforcement 6 on the top of the bottom plate 2 is formed by binding and fixing a plurality of transverse ribs 11 and longitudinal ribs 10 which are perpendicular to each other. The longitudinal ribs 10 are parallel to the connecting horizontal ribs 9, and the transverse ribs 11 are stressed main ribs.

On the basis of the embodiment, further, a first lap joint steel bar 8 is arranged at the splicing part of the two floor slabs; the two ends of the first overlap reinforcement 8 are respectively positioned on the bottom plates 2 of the two floor slabs. Two ends of the first lap joint reinforcing steel bar 8 are respectively positioned on the bottom plate 2, and after pouring forming, the connecting strength of the two floor slabs can be enhanced.

Preferably, a plurality of light filling bodies 1 are arranged on the bottom plate 2 at intervals along the length direction of the splicing surface, and the first overlap steel bar 8 is arranged at the interval between two adjacent light filling bodies 1.

As shown in fig. 7-15, on the basis of the above embodiment, further, an i-shaped steel beam 13 is arranged at the joint of two floor slabs; the web of the steel beam 13 is vertically arranged; the connecting ring rib 5 is fixed with the web plate of the steel beam 13. This embodiment can be applicable to the node of being connected with girder steel 13, peg graft on the web of girder steel 13 when connecting ring muscle 5 and floor ring muscle 4 are crisscross to can fix to splice department concreting 12.

On the basis of the above embodiment, further, steel plates 14 are sequentially fixed on both sides of the web of the steel beam 13 at intervals along the length direction thereof; the steel plates 14 on the two sides of the web plate of the steel beam 13 correspond to each other one by one; the steel plate 14 is provided with a through hole 19; the connecting ring rib 5 is arranged in the through holes 19 of the two steel plates 14 correspondingly. The connecting ring rib 5 is inserted into the through hole 19 on the steel plate 14, so that the fixing of the connecting ring rib 5 and the web plate of the steel beam 13 is realized, and the installation is convenient.

On the basis of the above embodiment, further, the lower end of the connecting ring rib 5 is open, and two ends of the open are respectively bent downwards and vertically pass through the through holes 19 at two ends of the steel plate 14. The connecting ring ribs 5 are arranged in an open form, and a constructor can insert the two open ends into the through holes 19 in the steel plate 14 respectively without fixing the two ends to form a closed ring shape, so that the construction is further facilitated.

On the basis of the above embodiment, further, the upper end flange of the steel beam 13 is shorter than the lower end flange; the bottom of one end of the bottom plate 2, which is positioned on the splicing surface, is provided with a supporting groove; the two ends of the flange at the lower end of the steel beam 13 are respectively positioned in the supporting grooves of the two bottom plates 2. In this embodiment, the upper end flange of the steel beam 13 is shorter than the lower end flange, so that the lower end flange can be placed in the supporting groove of the bottom plate 2, thereby facilitating the support of the steel beam 13 and the bottom plate 2.

On the basis of the above embodiment, further, the steel beam 13 is sequentially provided with a plurality of through holes 18 along the length direction thereof, and second lap bars 17 are arranged in the through holes 18 in a penetrating manner; the two ends of the second overlap reinforcement 17 are located in the two floors respectively. The second overlap reinforcement 17 can further enhance the connection strength of the two floor slabs after the concrete 12 is poured.

On the basis of the embodiment, further, the anti-cracking steel bar structure further comprises anti-cracking steel bars 16; one end of the anti-cracking steel bar 16 is positioned on the lower end flange of the steel beam 13, and the other end is positioned in the bottom plate 2. The anti-cracking steel bars 16 are arranged on the bottom plate 2, so that the bottom plate 2 can be prevented from cracking.

In addition to the above embodiments, a plurality of studs 15 are sequentially provided on the upper flange of the steel beam 13 at intervals along the length direction thereof. The arrangement of the studs 15 can enhance the roughness of the splicing structure of the concrete 12 and the floor slab, and is convenient for fixing the concrete 12.

On the basis of the above embodiment, further, the light weight filling body 1 comprises a polystyrene board and a plastic formwork, of course, the light weight filling body 1 can also comprise other light weight materials, and the light weight material is filled to form the multi-ribbed hollow floor slab, so that the self weight of the floor slab can be greatly reduced, the using amount of the concrete 12 can be reduced, and the cost can be reduced. On the basis of the above embodiment, the present invention further provides a construction method of a splicing structure of laminated floor slabs, including the following steps:

placing two floor slabs adjacently at intervals so that the installation gaps of the two floor slabs are adjacent;

a plurality of connecting ring reinforcements 5 of the steel reinforcement framework and a plurality of floor slab ring reinforcements 4 on two floor slabs are arranged in a staggered manner;

and pouring concrete 12 to the steel reinforcement framework and the floor slab annular rib 4.

On the basis of the above embodiment, further, a steel bar truss 7 is fixed on one side of the bottom plate 2, a connecting ring rib 5 is fixed on the opposite side, and a light filling body 1 is placed between the steel bar truss 7 and the connecting ring rib 5 on the bottom plate 2 to form a floor slab.

On the basis of the above embodiment, further, top steel bars are bound on the tops of the two light-weight filling bodies 1 to form a steel bar mesh 6, and two ends of the steel bar mesh 6 are lapped on the steel bar trusses 7 of the two floor slabs; concrete 12 is poured to the mesh reinforcement 6 and the steel bar trusses 7.

On the basis of the above-mentioned embodiment, further, after setting up a plurality of connecting ring muscle 5 with framework of steel reinforcement and a plurality of floor slab ring muscle 4 on two floors all crisscross, still include following step:

place first overlap joint reinforcing bar 8 in concatenation department, and place the both ends of first overlap joint reinforcing bar 8 respectively on the bottom plate 2 of two floors.

On the basis of above-mentioned embodiment, furtherly, place two adjacent intervals of floor to the installation opening that makes two floors is adjacent, with the equal crisscross setting of a plurality of floor ring muscle 4 on a plurality of connecting ring muscle 5 and two floors of framework of steel reinforcement, specifically include following step:

perforating a through hole 19 on the steel plate 14;

steel plates 14 are welded on two sides of a web plate of the I-shaped steel beam 13;

placing the I-shaped steel beam 13 so that a web plate of the steel beam 13 is vertically arranged;

placing two floor slabs on two sides of a web plate of the I-shaped steel beam 13 respectively;

the lower end of the connecting ring rib 5 is opened, two end parts at the opening are bent downwards, and the two end parts at the opening of the connecting ring rib 5 vertically penetrate through the through hole 19 on the steel plate 14.

On the basis of the above embodiment, further, after vertically penetrating the two ends at the opening of the connecting ring rib 5 through the through hole 19 on the steel plate 14, the method further includes the following steps:

a plurality of through holes 18 are sequentially arranged on the web plate of the steel beam 13 at intervals along the length direction of the web plate, and the second lap-joint reinforcing steel bars 17 penetrate through the through holes 18, so that two ends of the second lap-joint reinforcing steel bars are respectively positioned in two floor slabs.

As one of the preferred embodiments, as shown in fig. 16 to 21, the construction method provided by the embodiment of the present invention specifically includes the following steps:

processing a floor slab with floor slab ring ribs 4 and steel bar trusses 7 and a steel bar framework;

as shown in fig. 16, adjacent floor panels are placed close together;

as shown in fig. 17 and 18, a light-weight filling body 1 is placed between the steel bar truss 7 and the floor slab annular rib 4;

as shown in fig. 17 and 18, the steel reinforcement framework falls down from the upper side, passes through the floor slab annular ribs 4 of two adjacent floor slabs, is placed on the top of the prefabricated slab and is temporarily fixed;

as shown in fig. 19, a first overlap steel bar 8 is placed, the first overlap steel bar 8 crosses over the slab joint position and extends into the floor slabs on two sides of the slab joint, and the length meets the requirement of the overlap length of the steel bars;

as shown in fig. 20 and 21, the top steel bars are bound, and concrete 12 is poured to complete the construction of the splicing structure of the composite floor slab.

As another preferred implementation, as shown in fig. 22 to 26, the construction method provided by the embodiment of the present invention specifically includes the following steps:

processing an unequal flange steel beam 13 with a through hole 18 on a web plate and welded with a steel plate 14 with a through hole 19, and binding a steel reinforcement framework;

as shown in fig. 22, the floor slabs on both sides of the steel beam 13 are respectively placed on the lower flanges of the unequal flange steel beams 13;

as shown in fig. 23, a lightweight filling body 1 is placed between the steel bar trusses 7;

as shown in fig. 24 and 25, the steel reinforcement framework is dropped from the upper side and passes through the through holes 19 of the steel plates 14 welded on the web of the steel beam 13;

the second lap-joint reinforcing steel bars 17 penetrate through the web plate through holes 18 of the steel beam 13 at the plate rib positions and extend into floor slabs on two sides of the steel beam 13, and the length meets the requirement of the lap-joint length of the reinforcing steel bars;

as shown in fig. 26, the top steel bars are bound, and concrete 12 is poured to complete the construction of the splicing structure of the composite floor slab.

In summary, the laminated floor slab splicing structure and the construction method thereof provided by the invention have the advantages that no ribs are arranged on the four sides of the prefabricated slabs, the factory automation batch production is facilitated, the dense splicing seam construction is convenient to construct on site, the floor slab has light dead weight, the concrete consumption is small, the stress performance is good, the integrity is strong, the site assembly construction is realized, the construction efficiency is high, and the like, solve the problems and the defects of the truss reinforced concrete laminated slab, have important significance for promoting the development of the assembly type building, and have wide prospects in the application of the assembly type building.

Example 2

The present embodiments provide a modular construction housing system, comprising: the steel beam, the column body, the shear wall, the laminated floor slab and the cantilever slab are arranged on the upper surface of the steel beam; the laminated floor slab has the laminated floor slab construction disclosed in example 1.

As shown in fig. 27, in the horizontal projection plane, the floor structure 50 of the composite structure housing system includes a composite floor 51 disposed indoors, and a cantilever plate 52 disposed outdoors; the laminated floor slab 51 and the cantilever slab 52 are connected through a cold and heat bridge prevention node 53.

As shown in fig. 28 and 29, the cold and hot bridge preventing node 53 includes a sandwich plate, a first steel shim plate 53c and a second steel shim plate 53 d; the sandwich panel includes a first metal panel 53a, a second metal panel 53b, a plurality of node connectors 56, an annular sealing plate 54, and a thermal insulation material 55 (i.e., a heat insulating material); the annular closing plate 54 is fixedly connected between the first metal panel 53a and the second metal panel 53b which are oppositely arranged, and surrounds the first metal panel 53a and the second metal panel 53b to form a sealed cavity; one end of the node connecting piece 56 is fixedly connected with the first metal panel 53a, and the other end is fixedly connected with the second metal panel 53b, and is arranged in the sealed cavity; the heat insulation material is filled in the sealed cavity.

A first reinforcing steel bar base plate 53c is welded on the surface of one side, away from the second metal panel 53b, of the first metal panel 53a, and a plurality of floor reinforcing steel bars 53e which extend towards the indoor side and enter the laminated floor slab 51 are welded on the first reinforcing steel bar base plate 53 c; the floor reinforcing steel bars 53e are lapped or welded with the reinforcing steel bar framework in the laminated floor slab 51.

The surfaces of the second metal panels 53b, which are away from the first metal panels 53a, are welded with second steel bar cushion plates 53d, and the second steel bar cushion plates 53d are welded with a plurality of cantilever steel bars 53f which extend to the outdoor side and enter the cantilever plates. The cantilever plate steel bars 53f are lapped or welded with the steel bar framework in the cantilever plate. The cantilever plate can be a cantilever balcony, a cantilever air-conditioning plate, a rain shielding plate and other members.

Preferably, the node connecting members 56 are connecting pipes, connecting rods, honeycomb plates or corrugated plates; when the node connection 56 is a connection pipe, the connection pipe is filled with an insulation material. More preferably, node connectors 56 and annular closure plate 54 are formed from a fiber reinforced composite material or plastic. Wherein the heat insulating material is rock wool or foamed polyurethane.

In the above technical solution, preferably, the first metal panel 53a is a carbon structural steel plate, a low-alloy high-strength structural steel plate, or a stainless steel plate; the second metal panel 53b is a carbon structural steel plate, a low-alloy high-strength structural steel plate, or a stainless steel plate.

The annular sealing plates 54 comprise a bottom surface sealing plate, a first side surface sealing plate, a top surface sealing plate and a second side surface sealing plate which are sequentially connected end to end along the circumferential direction; the bottom surface sealing plate and the top surface sealing plate are oppositely arranged; the first side shrouding and second side shrouding set up relatively.

During construction, the first metal panel 53a, the second metal panel 53b, the node connecting piece 56 and the annular sealing plate 54 are fixedly connected together, and a fabrication hole is reserved on the annular sealing plate 54; welding reinforcing steel bar backing plates on the first metal panel 53a and the second metal panel 53b respectively; welding reinforcing steel bars on each reinforcing steel bar base plate; placing the steel bar positioned on one side of the first metal panel 53a or the second metal panel 53b into a formwork (a floor slab or a cantilever formwork); binding steel bars on the steel bars in the template to form a steel bar framework; pouring concrete into the template; filling a heat insulating material into the sealed cavity through the fabrication hole, and extruding and compacting; and (4) plugging the fabrication holes to form a prefabricated part with the cold and heat resistant bridge node for the floor slab.

The cold and heat bridge prevention node of the floor structure has the characteristics of simple and convenient construction and small field workload; the heat insulation materials such as rock wool and foamed polyurethane are filled in the middle of the sandwich plate, and meanwhile, the heat insulation materials are embedded into the sealed cavity of the sandwich plate, so that the sandwich plate is prevented from forming a heat bridge, namely a bridge cut-off structure is formed between the laminated floor slab and the cantilever slab on the two sides of the interior and the exterior, the heat insulation effect is good, the heat insulation materials are good in durability, and no falling risk exists; the reinforcing bar passes through the reinforcing bar backing plate and welds on metal decking to be fixed with a plurality of nodal connection pieces between metal decking, thereby make the structural strength height and the atress performance of anti cold and hot bridge node good.

Example 3

The embodiment discloses a combined structure house system, which is basically the same as the embodiment 2, except that:

as shown in fig. 30, the modular construction housing system includes a restraint support 60; the both ends of the constraint supporter 60 are fixedly connected with the middle portions of the column and the steel beam, respectively.

As shown in FIG. 31, the constraining support 60 comprises an outer constraining sheath 61, and an inner core 62, a constraining ring 63, and a constraining rod 64 all disposed within the outer constraining sheath.

The restraining rod 64 and the inner core 62 are both arranged along the length direction of the outer restraining sleeve, and the restraining ring 63 is fixed with the outer restraining sleeve and sleeved outside the inner core 62 and the restraining rod 64 so as to fix the inner core 62 and the restraining rod 64.

As shown in fig. 31, the core 62 has a long plate shape; both sides of the inner core 62 are provided with restraining rods 64; alternatively, as shown in fig. 32, the inner core 62 is a long strip with a cross-shaped cross section, and the four cross-shaped intervals are provided with the restraint rods 64.

Wherein, the restraint ring 63 comprises a plurality of annular restraint steel bars sleeved outside the inner core 62 and the restraint rods 64; the plurality of annular restraining bars are sequentially arranged at intervals along the length direction of the restraining bar 64. In addition, the restraining ring 63 may also be an annular restraining bar that is helically wound around the inner core 62. Wherein, annular restraint reinforcing bar is preferred plain round reinforcing bar. The restraining bar 64 is preferably a steel bar; and the steel bar is welded and fixed with the plain round steel bar. An anti-friction layer is disposed between the restraining bar 64 and the inner core 62 to reduce the frictional resistance between the restraining bar 64 and the inner core 62.

As shown in fig. 33, the outer restraining sleeve 61 includes a mortar layer 61a, and a reinforcing structure is provided in the mortar layer 61 a; the reinforcing structure is a steel wire mesh 61b (or glass fiber net); the steel wire mesh is arranged along the circumferential direction of the outer constraint casing.

As shown in fig. 30, both ends of the inner core 62 are respectively provided with a connection end 65 extending out of the outer restraining sleeve; the width of the connecting end is greater than the width of the inner core 62 of the outer constraining sheath (the middle width of the inner core 62); the connecting end is provided with a mounting hole. The constraint support piece is connected with the steel beam and the column body through the mounting hole in the connecting end respectively.

The buckling restrained brace, the restraint rod 64 and the restraint ring 63 restrain the buckling of the inner core 62 and limit the local buckling of the inner core 62, so that the performance of the core plate can be fully exerted, meanwhile, the restraint ring 63 only needs to be sleeved outside the inner core 62 and the restraint rod 64 for fixing during processing, the requirement is low, and the operation does not need special factory processing, so that the processing is simple and convenient, and the operation is easy. The restraint rods 64 are steel rods, the inner core 62 is steel core, the restraint rings 63 are made of smooth steel bars which are common materials, and therefore cost is low and economical efficiency is good. The outer constraint sleeve is made of mortar, so that the buckling restrained brace is prevented from being corroded, and the outer constraint sleeve is free of maintenance in the service life.

Example 4

This example discloses a combined structure housing system, which is substantially the same as example 2 or 3, except that:

as shown in fig. 34 to 37, the present embodiment provides a column body 30, which includes a circular steel tube 31 and 2 to 4T-shaped steels 32; concrete 33 is poured in the circular steel tube 31, the T-shaped steels 32 are arranged at intervals along the circumferential direction of the circular steel tube 31, and one ends, opposite to the web plate and the flange of the T-shaped steel 32, are fixedly connected with the outer wall of the circular steel tube 31; the web 32b of the T-section steel 32 is located on the diameter extension line of the circular steel tube 31, and the flange 32a is provided with bolt holes.

Wherein, a plurality of T shaped steel 32 lay the mode is various, as shown in fig. 34, T shaped steel 32 is two, and the web of two T shaped steel 32 is located the same diameter of circular steel tube 31 in order to form a font. As shown in FIG. 36, the T-section steel 32 is two, and the webs of the two T-section steels 32 are perpendicular to form an L-shape. As shown in FIG. 37, there are three T-section steels 32, and the webs of the three T-section steels 32 are arranged in a T-shape. As shown in FIG. 35, the T-section 32 is four, and the webs of the four T-section 32 are arranged in a cross shape.

The column body 30 provided by the invention is composed of a circular steel tube 31 and a plurality of T-shaped steels 32, wherein the circular steel tube 31 concrete is positioned near the neutralizing shaft and mainly bears the axial force, the advantage of good axial pressure mechanical property of the circular steel tube 31 concrete is fully exerted, the T-shaped steels 32 are arranged far away from the neutralizing shaft, the moment arm is increased, the bending resistance bearing capacity is greatly improved, and thus the bending resistance mechanical property is greatly improved. Meanwhile, the T-shaped steel 32 is located on the outer side and convenient to connect, and achieves full-bolt connection of beam-column joints, columns and column vertical splicing joints, namely, the column body 30 is connected with the steel beam and the upper and lower columns through bolts. And during connection, the steel column can be prevented from being exposed outside the wall body, and the aim of hiding the column in the wall body is fulfilled. The node structure is simple, the node plates do not extend into the circular steel tube 31, and the concrete pouring quality is easy to guarantee. In addition, the cylinder 30 of the invention is processed by hot rolling section bars, cold bending round steel pipes and other finished section bars, and has simple processing, automatic production and low production cost.

In the above solution, preferably, the circular steel tube 31 is provided with a first circular exhaust hole (not shown) on the side wall or both ends; the diameter of the first circular vent hole is larger than or equal to 12 mm. When meeting with the conflagration, first circular exhaust hole is used for discharging the vapor in the concrete in the circular steel tube 31, prevents the circular steel tube 31 expansion crack.

Example 5

This example is substantially the same as example 4, except that:

as shown in fig. 38, the column 30 is embedded in the wall S4; the flange of the T-shaped steel close to the outdoor side in the column 30 is an outer side flange 3a, and the outer side flange 3a is arranged in parallel with the wall surface of the wall body S4; the outer side end face of the outer flange 3a is coated with an outer anticorrosive layer (not shown); and a plurality of layers of glass wool boards S10 are laid on the outer sides of the anti-corrosion layers of the outer side flanges and used for blocking the heat flow transmitted between the indoor and outdoor sides of the wall body by the column body 30 as a heat bridge.

The heat bridge effect at the position of the column 30 is effectively eliminated, the overall heat insulation performance of the building is improved, and meanwhile, the influence of external temperature change on the outer anticorrosive coating can be effectively weakened through the plurality of layers of glass wool boards S10; the effective anticorrosion period of the anticorrosion layer is prolonged.

In a projection plane parallel to wall S4, the breadth of glass wool panel S10 is sized to not cover the entire wall S4, and the breadth of glass wool panel S10 covers only all or a portion of column 30. Different from a heat insulation plate or a heat preservation layer which is integrally arranged on the outer side of a wall body, the glass wool board is arranged to block a heat bridge at a column body, and the heat conduction problem at the local position of the column body is solved.

The invention has obvious heat preservation and insulation effect and low cost, can effectively reduce the heat transfer brought by the column as a heat bridge, eliminates the heat flow concentration at the indoor and outdoor sides of the wall S4 at the column, greatly improves the heat insulation performance of the wall S4, and ensures that the wall S4 can meet the requirements of 75 percent energy conservation and heat transfer coefficient of residential buildings<0.45W/(m²K) green energy saving design requirements.

And, on the projection plane parallel to the wall body S4, the left and right side ends of the glass wool board S10 are arranged to protrude out of the outer flange 3a and are embedded on the wall body S4. The glass wool board S10 properly extends on the left and right sides of the outer flange 3a, so that the blocking performance of heat transfer of the column heat bridge is further improved, and the heat insulation performance of the wall body S4 is improved. The glass wool board S10 is embedded into the wall body S4, so that the phenomena of edge rising, bulging and the like are not easy to occur, and the installation is firmer.

In the embodiment, 2 layers of glass wool boards are arranged on the outdoor side of the column in the thickness direction of the wall body S4; the adjacent two glass wool panels comprise an inner glass wool panel S11 adjacent the column and an outer glass wool panel S12 remote from the column. On a projection plane parallel to the wall S4, the left side and the right side of the outer glass wool board S12 are arranged to protrude out of the inner glass wool board S11; on the horizontal section of the wall body S4, 2 layers of glass wool boards are respectively embedded on the wall body S4 in an inverted pyramid type (step shape).

On the horizontal section of the wall body S4, a plurality of layers of glass wool boards are arranged in a (inverted pyramid) step shape. The heat transfer efficiency of the column is normally distributed, the heat transfer amount of the central area facing the column is the most intensive, and is the column heat bridge area, while the heat transfer amounts of the left side and the right side are gradually reduced, and are respectively the heat bridge influence areas, wherein the length of the arrow in fig. 14 reflects the heat transfer amount. The glass wool boards are arranged on one side of the cylinder in an inverted pyramid mode, and the transmission rule that heat is normally distributed in a heat bridge is more met, so that heat scattering on two sides of the cylinder can be blocked while heat transfer on the front side of the cylinder can be effectively blocked.

And the plurality of layers of glass wool boards are arranged in an inverted pyramid manner, and the left side and the right side of each glass wool board can be embedded with the wall S4, so that the glass wool boards can be prevented from warping and bulging in the building life of decades after being installed. On the premise of ensuring that the building energy-saving design standard is met, the building energy-saving cost is reduced. The invention can be widely applied to the field of heat insulation of the outer wall with the steel frame structure.

While single-layer glass wool panels require an increase in the thickness of the glass wool panel if the same thermal bridge blocking effect is achieved, excessively thick glass wool panels are often non-standard and require custom-made by the manufacturer, thereby increasing construction costs. In addition, the excessively thick glass wool board is inconvenient to install due to being excessively heavy, and is easy to fall off after installation. And when the single-layer glass wool board meets the heat insulation effect of the heat bridge column region, the condition that heat insulation measures are excessive exists in the corresponding region of the heat bridge influence region, and material waste exists.

And this application can adopt 2-6 layers of conventional glass cotton board according to the design requirement in a flexible way, and every layer of glass cotton board thickness greatly reduced, the installation of being convenient for, the cotton board of installation back glass is difficult for droing, and is more firm. In addition, excessive waste of materials does not exist, so that the method belongs to a green and energy-saving construction method.

In the above embodiment, it is more preferable that the number of the glass wool boards is 3 to 4, and the width of the outer flange 3a and the width of the 3 to 4 glass wool boards are sequentially arranged in an equal ratio series, wherein the ratio range is preferably 1.6 to 2. Taking 3 layers of glass wool boards as an example, the width of the inner layer of glass wool board is 1.6-2 times of the width of the outer flange 3a, the width of the middle layer of glass wool board is 1.6-2 times of the width of the inner layer of glass wool board, and the width of the outer layer of glass wool board is 1.6-2 times of the width of the middle layer of glass wool board.

Wherein, the inner glass wool board S11 is laid on the outer side surface of the outer flange 3a and the wall body S4 by using adhesive. The outer glass wool board S12 is coated on the inner glass wool board S11 and the wall S4 by using an adhesive 5.

In addition, a connecting anchor bolt is arranged between the wall S4 and the glass wool board S10, and the glass wool board is further fastened by the connecting anchor bolt after being adhered to the wall through adhesive. The glass wool board is fixed by adopting two modes of an adhesive and an anchor bolt, so that the integral performance of the heat-insulating layer and the wall body is ensured.

In the present embodiment, it is more preferable that the flange of the T-section steel near the indoor side in the column 30 is an inner flange 3b, the inner flange 3b is arranged parallel to the wall surface of the wall body, and the outer end surface of the inner flange 3b is coated with an inner anticorrosive coating; and no thermal insulation material is laid outside the inner anti-corrosion layer of the inner flange 3 b.

Because the indoor humiture changes less, and is comparatively stable, be favorable to the inner anticorrosive coating to keep effective for a long time from this, utilize the heat bridge effect of cylinder self, and combine the cotton board of glass outside the outside edge of a wing to block the heat bridge to weaken the temperature variation fluctuation of outside edge of a wing 3a outer anticorrosive coating department greatly, thereby prolong the effective life-span of outer anticorrosive coating more effectively, thereby improved the corrosion resisting property of cylinder on the whole.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A laminated floor slab splicing structure is characterized by comprising a steel reinforcement framework and two floor slabs arranged at intervals;

one end of the floor slab, which is positioned on the splicing surface, is provided with an installation notch; the bottom of the mounting gap is sequentially and vertically fixed with floor slab ring ribs at intervals along the length direction of the splicing surface of the floor slab;

the steel bar framework comprises a connecting horizontal rib and a plurality of connecting annular ribs, wherein the connecting horizontal rib is arranged along the length direction of the splicing surface, and the connecting annular ribs are fixed with the connecting horizontal rib; the connecting annular ribs are parallel to the floor slab annular ribs; the plurality of connecting annular ribs and the plurality of floor slab annular ribs on the two floor slabs are arranged in a staggered mode; concrete is poured on the connecting annular ribs and the floor slab annular ribs.

2. The composite floor splicing structure of claim 1, wherein the floor comprises a floor slab and a lightweight filler on the floor slab; the bottom plate is internally provided with a bottom horizontal rib perpendicular to the connecting horizontal rib, and one end of the bottom horizontal rib positioned on the splicing surface is bent to the other end to form a ring rib of the floor slab.

3. A composite floor splicing structure according to claim 2, wherein a steel bar truss is arranged at one end of each bottom plate far away from the splicing surface; reinforcing steel bar meshes are arranged at the upper ends of the two light filling bodies, and the two ends of each reinforcing steel bar mesh are respectively connected with the reinforcing steel bar trusses of the two floor slabs; concrete is poured on the steel bar truss and the steel bar mesh.

4. The composite floor slab splicing structure of claim 2, wherein a first overlap reinforcement is arranged at the splicing part of the two floor slabs; and two ends of the first lap joint reinforcing steel bar are respectively positioned on the two bottom plates of the floor slab.

5. The composite floor splicing structure of claim 2, wherein an I-shaped steel beam is arranged at the splicing position of the two floors; the web plate of the steel beam is vertically arranged; the connecting ring rib is fixed with the web plate of the steel beam.

6. The composite floor slab splicing structure according to claim 5, wherein steel plates are sequentially fixed on two sides of the steel beam web at intervals along the length direction of the steel beam web; the steel plates on the two sides of the steel beam web plate correspond to one another; the steel plate is provided with a through hole; the connecting ring ribs penetrate through the through holes of the two correspondingly arranged steel plates.

7. The composite floor slab splicing structure of claim 6, wherein the connecting ring ribs are open at the lower ends, and the two ends at the openings are respectively bent downwards and vertically penetrate through the through holes at the two ends of the steel plates.

8. A composite floor splicing structure according to claim 5, wherein the steel beam upper end flanges are shorter than the lower end flanges; a supporting groove is formed in the bottom of one end, located on the splicing surface, of the bottom plate; two ends of the flange at the lower end of the steel beam are respectively positioned in the supporting grooves of the two bottom plates;

the steel beam is sequentially provided with a plurality of through holes along the length direction, and second lap-jointed steel bars penetrate through the through holes; and two ends of the second lap joint reinforcing steel bar are respectively positioned in the two floor slabs.

9. A method of constructing a composite floor slab splice construction according to any one of claims 1 to 8, including the steps of:

placing two floor slabs adjacently at intervals so that the installation gaps of the two floor slabs are adjacent;

a plurality of connecting ring reinforcements of the steel reinforcement framework and a plurality of floor slab ring reinforcements on two floor slabs are arranged in a staggered manner;

and pouring concrete to the steel reinforcement framework and the floor slab ring rib.

10. A modular construction housing system with a composite floor slab joint construction according to any one of claims 1 to 8, comprising: the steel beam, the column body, the shear wall and the composite floor slab; the laminated floor slab is provided with the laminated floor slab splicing structure;

the column body comprises a round steel pipe and a plurality of T-shaped steels; concrete is poured in the circular steel tube, the T-shaped steels are arranged at intervals along the circumferential direction of the circular steel tube, and one ends, opposite to the web plate and the flange, of the T-shaped steels are fixedly connected with the outer wall of the circular steel tube; the web of the T-shaped steel is located on the diameter extension line of the circular steel tube, and the flange is provided with a bolt hole.

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