Fully-fabricated concrete multi-story building system

Abstract

The utility model relates to the field of fabricated buildings, in particular to a fully fabricated concrete multi-story building system which comprises prefabricated vertical members and prefabricated transverse members, and connecting steel bars of the prefabricated vertical members extend out of the tops of the prefabricated vertical members; the top of the precast beam is provided with shear-resistant steel bars, connecting steel bars, located at the upper end and the lower end of the precast beam, of the precast beam extend outwards in the length direction of the precast beam, the connecting steel bars of the precast beam are bent in the thickness direction of the precast beam, and the connecting steel bars extending out of the precast beam are linear. The precast beams are in lap joint with the two adjacent precast vertical components, the precast beams and the precast vertical components define a post-cast strip, and connecting steel bars of the precast beams extend into the post-cast strip; the ends of the prefabricated floor slabs are in lap joint with the prefabricated beams, the ends of the two adjacent prefabricated floor slabs and the prefabricated beams define a post-cast strip, and connecting steel bars of the prefabricated floor slabs and shear-resistant steel bars of the prefabricated beams extend into the post-cast strip. And the post-cast strip is filled with concrete. By implementing the scheme, the problem that an existing building system is long in construction period or high in construction cost is solved.

Description

Technical Field

[0001] The utility model relates to the field of prefabricated buildings, and particularly relates to a fully prefabricated concrete multi-story building system. Background Art

[0002] People's living standards are getting higher and higher, and the rural environment is getting better and better. Many villagers return to their hometowns to build villas. At the same time, the government builds new tourism projects according to local characteristics to drive the local economy. Therefore, a large number of homestays are built near tourism projects, and the demand for multi-story buildings about five floors is increasing. However, the structures of current multi-story building systems mainly include the following three types:

[0003] The first structure is: the cast-in-place + bricklaying + composite floor slab structure, that is, through bricklaying walls, binding beam steel bars on site, and then hoisting the composite floor slab onto the beam and casting concrete in the composite floor slab and beam formwork. This method requires a large amount of labor, usually more than 10 workers such as formwork workers, steel bar binders, concrete pourers, bricklayers, etc. At the same time, the construction period is long and affected by the weather more. If building a three-story villa, it takes about 3 months.

[0004] The second structure is: the steel structure frame + composite floor slab structure, that is, the main frame of the house such as columns and beams is welded by steel structures. However, after the composite floor slab is laid, it still needs to be cast on site at the construction site, and the degree of prefabrication is low. The construction efficiency of this structure is improved compared with the first one, shortening a certain construction period, but it still takes more than 1 month.

[0005] The third structure is: the prefabricated steel structure building system, that is, the walls, wall panels, structural beams, etc. of the building system are all prefabricated from steel materials in the factory and then transported to the construction site and assembled on the foundation at the construction site to build a building with normal house functions. This method has a short construction period and good seismic resistance, but this building system has poor sound insulation and heat insulation effects. The most important thing is that the cost is high, mainly the maintenance cost. The light steel materials need to be maintained once every 3 - 5 years, and the heavy steel materials need to be maintained once every about 10 years. Each time of maintenance requires peeling off the materials decorated outside the steel structure materials, coating anti-corrosion paint, and then redecorating, so the maintenance is very troublesome and the cost is high.

[0006] Therefore, there is a need to design a building system with a short construction period and low cost at present. Content of the Utility Model

[0007] The utility model aims to provide a fully prefabricated concrete multi-story building system to solve the problems of long construction period or high cost of existing building systems.

[0008] To achieve the above object, the utility model adopts the following technical solutions: A fully prefabricated concrete multi-storey building system includes precast vertical components and precast horizontal components made of reinforced concrete. The connecting steel bars of the precast vertical components extend out of their tops, and grouting pipe fittings are provided at the bottoms of the precast vertical components; The precast horizontal components include precast beams and precast floor slabs. Shear-resistant steel bars are provided at the tops of the precast beams. The connecting steel bars of the precast beams at their upper and lower ends extend outwards along their lengths, and the connecting steel bars of the precast beams are bent along the thickness direction of the precast beams, and the connecting steel bars extending out of the precast beams are straight; The connecting steel bars of the precast floor slabs extend outwards along their lengths, and the free ends of the connecting steel bars are bent.

[0009] The precast vertical components are fixedly connected to the foundation;

[0010] The precast beams are lapped on two adjacent precast vertical components, and a post-cast strip is formed between the ends of the precast beams and the precast vertical components. The connecting steel bars of the precast beams extend into the post-cast strip;

[0011] The ends of the precast floor slabs are lapped on the precast beams. Post-cast strips are formed between the ends of adjacent precast floor slabs and the precast beams. The connecting steel bars of the precast floor slabs and the shear-resistant steel bars of the precast beams extend into the post-cast strips; The post-cast strip is filled with concrete.

[0012] The principle and advantages of this solution are as follows:

[0013] 1. Short construction period: In this solution, since each building component is prefabricated and formed, during on-site construction, only each precast component needs to be hoisted to the designated position, and then only a small amount of concrete needs to be cast in situ at the intersection nodes of each precast component. Therefore, the on-site construction volume is small and the construction is fast. At the same time, since the amount of in-situ concrete is extremely small, high-strength concrete can be selected for the in-situ concrete. This concrete has a good connection effect and a short time to reach the predetermined strength, usually reaching it in 1 day. However, this concrete is more expensive than ordinary concrete. Therefore, when pouring a large amount of concrete on traditional floor decks, ordinary concrete is usually only selected, and the cycle for ordinary concrete to reach the predetermined strength is 3 days. In summary, if a building of this system with three floors is built, it can be completed in about three weeks. Compared with the first building structure in the prior art, the construction period is shortened by three-quarters.

[0014] 2. Few on-site construction personnel: Since the on-site workload is small, only about 3 on-site construction personnel are needed, mainly for a small amount of work such as hoisting each component on-site, straightening when the components are delivered, and pouring concrete. Therefore, very few workers are required on-site.

[0015] 3. Low cost: Each building component of this solution is made of reinforced concrete. Compared with the building structure of the steel structure frame system, it has better sound insulation and heat insulation effects, and at the same time, the construction cost is low and there is no need for subsequent anti-corrosion maintenance cost.

[0016] 4. In this solution, the connecting steel bars of the precast beam are bent along the thickness direction of the precast beam, and the connecting steel bars extending outside the precast beam are straight. In this way, the steel bar distribution is reasonable at the intersection of multiple beams and is conducive to the lowering of the beam. At first, the applicant bent the ends of the connecting steel bars extending from the precast beam. The ends of the connecting steel bars in the upper row were bent downward, and the ends of the connecting steel bars in the lower row were bent upward to ensure the connection strength at the joint. However, during the actual construction, especially at the joint of three beams, as Figure 23 shown, the interference between the connecting steel bars is serious, and it is difficult to lower the precast beam. Therefore, the applicant made the above improvements to the connecting steel bars. By bending the connecting steel bars along their thickness direction and hiding the bent parts inside the precast beam, at the intersection of multiple beams, the bent parts will not interfere with the connecting steel bars of other precast beams and precast vertical members. Secondly, by setting different bending angles of the connecting steel bars extending from each precast beam along their thickness direction, the connecting steel bars are staggered from each other to reduce the interference problem. At the same time, the extending connecting steel bars are set to be straight, reducing the amount of steel bars at the intersection of multiple beams and avoiding the problem that the over-dense steel bars interfere with each other and affect the lowering of the precast beam.

[0017] Preferably, as an improvement, it further includes a precast caisson. The precast caisson is a reinforced concrete structure. The precast caisson is a box structure with an upward opening. The upper edge of the precast caisson extends horizontally outward to form a flange. The connecting steel bars of the precast caisson extend outside the flange, and the ends of the connecting steel bars are bent.

[0018] Preferably, as an improvement, the depth of the precast caisson is 400 mm, and its wall thickness is 100 mm.

[0019] Preferably, as an improvement, pipelines are buried in the precast vertical members and precast horizontal members. Manhole grooves are provided on the sides of the precast vertical members and precast horizontal members. The free ends of the pipelines extend into the manhole grooves.

[0020] Preferably, as an improvement, an anchor plate is provided at the end of the connecting steel bar extending outside the precast beam.

[0021] Preferably, as an improvement, lifting grooves are provided at the tops of the precast vertical members and precast horizontal members. Lifting members are buried in the lifting grooves. The tops of the lifting members are located in the lifting grooves and do not exceed the top surfaces of the respective precast vertical members or precast horizontal members.

[0022] With the above structure, compared with the prior art where the lifting member protrudes from the surface of the member, in this solution, there is no need to cut off the lifting member protruding from the surface of the member after lifting, thus reducing the construction process. At the same time, during the cast-in-place concrete process, due to the lifting groove recessed in the concrete column and the top structure of the lifting member being a disc or hemisphere, the connection strength between the cast-in-place concrete layer and the concrete column is enhanced.

[0023] Preferably, as an improvement, installation rabbets and installation protrusions are respectively provided at both ends of the precast vertical member, and the installation rabbets and installation protrusions of adjacent two precast vertical members are butt-jointed and installed.

[0024] Preferably, as an improvement, a plurality of connection grooves are provided on the side of the precast vertical member, and connection steel plates are fixed in the corresponding connection grooves of adjacent two precast vertical members.

[0025] Preferably, as an improvement, a waterproof counterfort is provided on the precast floor slab located on the top surface of the building system. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is the front view of the precast column of the present utility model.

[0027] Figure 2 It is the internal steel bar distribution diagram of the precast column.

[0028] Figure 3 It is Figure 1 the bottom view of

[0029] Figure 4 It is Figure 1 the enlarged view of A in

[0030] Figure 5 It is Figure 1 the enlarged view of B in

[0031] Figure 6 It is the longitudinal sectional view of the precast wall panel.

[0032] Figure 7 It is the connection structure diagram of the precast vertical member and the foundation.

[0033] Figure 8 It is the top view during the assembly process of two precast wall panels.

[0034] Figure 9 It is the front connection schematic diagram of two precast wall panels connected by connection steel plates.

[0035] Figure 10 It is the longitudinal sectional view of the precast beam.

[0036] Figure 11 of Figure 10 the top view of

[0037] Figure 12 View A-A of Figure 10 .

[0038] Figure 13 Front reinforcement drawing of precast main beam (stirrups not shown).

[0039] Figure 14 Top view of the connection between precast main beam and precast secondary beam.

[0040] Figure 15 Top view of precast floor slab.

[0041] Figure 16 Longitudinal sectional view of precast floor slab.

[0042] Figure 17 Schematic diagram of the connection between precast floor slab and precast beam.

[0043] Figure 18 Schematic diagram of the connection between precast floor slab and precast anti-camber.

[0044] Figure 19 Structural schematic diagram of precast caisson.

[0045] Figure 20 View of Figure 19 from below.

[0046] Figure 21 Schematic diagram of the connection between precast caisson, precast floor slab and precast beam.

[0047] Figure 22 Structural schematic diagram of adjustable support device.

[0048] Figure 23 Structural diagram of the original three-beam intersection node. Specific embodiments

[0049] The following is a further detailed description through specific embodiments:

[0050] The reference numerals in the accompanying drawings of the specification include: precast column 1, connecting steel bars 2, stirrups 3, grouting pipe fittings 4, grouting pipes 5, slurry discharge pipes 6, lifting grooves 7, lifting members 8, installation rabbets 9, second threaded sleeves 10, precast wall panels 11, installation protrusions 12, insulation layers 13, connecting grooves 14, connecting steel plates 15, first threaded sleeves 16, foundation 17, installation steel bars 18, slurry layers 19;

[0051] Precast beam 20, shear-resistant steel bars 21, anchor plates 22, precast main beam 23, precast secondary beam 24, connection ports 25, post-cast strips 26;

[0052] Precast floor slab 30, pipeline 31, handhole grooves 32, electrical holes 33;

[0053] Prefabricated caisson 40, outward flange 41, drain hole 42;

[0054] Prefabricated anti-cant strip 50, first steel bar hole 51, second steel bar hole 52, drip line 53;

[0055] Fixed plate 60, adjusting nut 61, connecting piece 62, connecting cylinder 63, support rod 64, support plate 65.

[0056] The embodiment is basically as shown in the appendix Figures 1 - 21 shown: A fully prefabricated concrete multi-story building system, each floor of which is assembled by prefabricated concrete components, and it includes prefabricated vertical components, prefabricated horizontal components, prefabricated caisson 40 and prefabricated stairs. As Figures 1 - 5 shown, the prefabricated vertical component includes a prefabricated column body 1 and a prefabricated wall panel 11. The prefabricated column body 1 is a reinforced concrete structure as a whole and has a wing plate. The connecting steel bars 2 of the prefabricated column body 1 extend out of its top. A plurality of grouting pipe fittings 4 are provided at the bottom of the prefabricated column body 1; the grouting pipe fitting 4 includes a hollow pipe body, and a grouting pipe 5 and a slurry discharge pipe 6 are horizontally provided on one side of the pipe body. The slurry discharge pipe 6 is located above the grouting pipe 5. The prefabricated column body 1 is fixedly installed on the foundation 17. Specifically: installation steel bars 18 are buried on the foundation 17, and the connecting steel bars 2 of the prefabricated vertical component and the installation steel bars 18 respectively extend into the grouting pipe fitting 4, and cement mortar is filled in the grouting pipe fitting 4. A first threaded sleeve 16 is embedded in the wall surface of the prefabricated column body 1 for connecting the diagonal bracing system.

[0057] Connection structure between the prefabricated column body 1 and the foundation 17:

[0058] As Figure 7 shown, the foundation 17 can be formed by in-situ casting or prefabrication. A plurality of installation steel bars 18 are buried on the foundation 17, and the tops of the installation steel bars 18 extend into the corresponding grouting pipe fittings 4, and cement mortar is filled in the corresponding pipe bodies. A slurry layer 19 is filled between the strip foundation 17 and the vertical component. The thickness of the slurry layer 19 is 20 mm. The slurry layer 19 is a high-strength grouting material, and a sealing mortar layer is filled around the slurry layer 19, so as to reinforce the connection strength between the strip foundation 17 and the vertical component 1.

[0059] After the prefabricated column body 1 is installed, the diagonal bracing system is threadedly connected to the first threaded sleeve 16 to play a horizontal support role for the prefabricated wall panel.

[0060] As Figure 6 shown, the interior of the prefabricated wall panel 11 is provided with a heat-insulating layer 13, and an installation rabbet is provided on the bottom side and the adjacent side of the prefabricated wall panel 11, and installation protrusions are provided on the other two sides of the prefabricated wall panel.

[0061] Connection structure between the prefabricated wall panel 11 and the foundation 17:

[0062] A mortar layer is filled between the installation rabbet of the precast wall panel 11 and the foundation 17.

[0063] The connection structures between precast vertical members include two types:

[0064] 1. As Figure 8 shown, installation rabbets 9 and installation protrusions 12 are respectively provided at both end portions of the precast vertical member. When adjacent two precast vertical members are installed, they are butt - joint installed through the installation rabbet 9 and the installation protrusion 12, and sealant is filled in the gap between the installation rabbet 9 and the installation protrusion 12.

[0065] 2. As Figure 9 shown, a plurality of connection grooves 14 are opened on the side of the wall surface of the precast vertical member. A connection steel plate 15 is fixed in the corresponding connection grooves 14 of adjacent two precast vertical members through bolts, so as to realize the fastening connection of adjacent two precast vertical members. At the same time, the thickness of the connection steel plate 15 is slightly less than the depth of the connection groove 14, and cement mortar is filled in the connection groove 14. On the one hand, if there is a gap between the precast vertical member and the connection steel plate 15, the cement mortar can be filled into this gap to enhance the connection stability between the two. On the other hand, the connection steel plate 15 is covered inside the precast vertical member to keep the consistency and flatness of the surface of the vertical member.

[0066] The precast horizontal members include a precast beam 20 and a precast floor slab 30. As Figures 10 - 12 shown, the precast beam 20 is a reinforced concrete structure. Four layers of connecting steel bars 2 are distributed vertically inside the precast beam 20, with two bars in each layer. Stirrups 3 are connected along the length direction of the four - layer connecting steel bars 2. The connecting steel bars 2 of the precast beam 20 located in its upper and lower two layers extend outwards along its length direction, and the connecting steel bars 2 of the precast beam 20 are bent along the thickness direction of the precast beam 20, and the bent part of the connecting steel bars 2 is located inside the precast beam 20. With the above - mentioned setting, by bending the connecting steel bars 2 along their thickness direction and hiding the bent parts inside the precast beam 20, at the intersection of multiple beams, the bent parts will not interfere with the connecting steel bars 2 of other precast beams 20 and precast vertical members. Secondly, by setting the bending angles of the extended connecting steel bars 2 of each precast beam 20 along their thickness direction to be different, the connecting steel bars 2 are mutually misaligned to reduce the interference problem. At the same time, the extended connecting steel bars 2 are set to be straight - line shaped, reducing the amount of steel bars at the intersection of multiple beams and avoiding the problem that the steel bars are too dense to cause mutual interference and affect the lowering of the precast beam 20.

[0067] The end of the connecting steel bar 2 extending out of the precast beam 20 is welded with an anchor plate 22, and the setting of this anchor plate 22 enhances the connection stability of the concrete in the post-cast strip 26 of the connecting steel bar 2; shear-resistant steel bars 21 are provided on the top of the precast beam 20. The part of the shear-resistant steel bar 21 located inside the precast beam 20 is bent, and the part extending out of the precast beam 20 is in an "n" shape. In this way, when assembling on-site, there is no need to tie beam steel bars on the precast beam, and concrete can be directly poured. At the same time, a strip-shaped groove with a width of 10-20 mm is opened on the top surface of the precast beam 20, and the strip-shaped groove is uneven to enhance the connection stability between the cast-in-place concrete and the precast beam 20.

[0068] An installation socket is opened at the bottom of the precast beam 20. In this way, the installation protrusions at the upper ends of each precast wall panel are all accommodated in the installation socket of the precast beam, which further ensures the lateral limit fixation of each precast wall panel.

[0069] As Figure 13 、 14 As shown in the figure, the precast beam 20 is divided into a precast main beam 23 and a precast secondary beam 24. Usually, the structures of the precast main beam 23 and the precast secondary beam 24 are the same. Only when the precast secondary beam 24 is assembled with the middle part of the precast main beam 23, a connection port 25 is also provided at the connection part of the precast main beam 23 and the precast secondary beam 24. The width of the connection port 25 is the thickness of the precast secondary beam 24. The connecting steel bar 2 of the precast main beam 23 is still reserved in the connection port 25, that is, only the concrete structure of the precast main beam 23 is removed at the connection port 25. The connecting steel bar 2 at the end of the precast secondary beam 24 extends into the connection port 25 and is arranged in a staggered manner with the connecting steel bar 2 of the precast main beam 23. The connection port 25 is filled with concrete.

[0070] In this scheme, by providing a connection port 25 on the precast main beam 23 and reserving the connecting steel bar 2 of the precast main beam 23 in the connection port 25, not only can the overall connection strength of the precast main beam 23 be ensured, but also the amount of the connecting steel bar 2 can be reduced. Initially, when the precast main beam 23 and the precast secondary beam 24 were connected, two precast main beams 23 were combined, that is, the connecting steel bars 2 extending out of the two precast main beams 23 were tied together. In order to ensure the connection stability of the two precast main beams 23, the tied connecting steel bars 2 should overlap at least 100 cm, that is, the connecting steel bars 2 extending out of the two precast main beams 23 are at least 100 cm each. In this scheme, the width of the connection port 25 is usually 20 cm, and a total of eight connecting steel bars 2 are buried in the precast main beam 23. Then the amount of the connecting steel bar 2 in the connection port 25 is 160 cm, while the initial scheme requires 1600 cm of the connecting steel bar 2, and more stirrups 3 need to be set. Therefore, this scheme not only ensures the overall connection strength of the precast main beam 23, but also greatly reduces the amount of the connecting steel bar 2 by at least 10 times.

[0071] The connection structure between the precast beam 20 and the precast vertical member:

[0072] The precast beam 20 is installed on two adjacent precast vertical members. One or more precast beams 20 and the precast vertical members enclose a post-cast strip 26. The connecting steel bars 2 of the precast beam 20 extend into the post-cast strip 26, and the post-cast strip 26 is filled with concrete, which is micro-expansion fine aggregate concrete.

[0073] Such as Figure 15 、 16 As shown, two layers of steel bars are embedded in the precast floor slab 30. Each layer of steel bars is composed of criss-cross connecting steel bars 2. The connecting steel bars 2 of the precast floor slab 30 along its length direction extend outwards, and the free ends of the connecting steel bars 2 are bent at 90°, and the extending lengths of the upper and lower rows of connecting steel bars 2 are different.

[0074] The connection structure between the precast floor slab 30 and the precast beam 20:

[0075] Such as Figure 17 As shown, the end of the precast floor slab 30 overlaps on the precast beam 20. The ends of two adjacent precast floor slabs 30 and the precast beam 20 enclose a post-cast strip 26. The connecting steel bars 2 of the precast floor slab 30 and the shear-resistant steel bars 21 of the precast beam 20 extend into the post-cast strip 26, and the post-cast strip 26 is filled with concrete, which is micro-expansion fine aggregate concrete.

[0076] Such as Figure 18 As shown, a plurality of precast anti-curbs 50 are also installed on the top-layer precast floor slab 30, and the plurality of precast anti-curbs 50 are connected end to end to form a closed space. The precast anti-curb 50 has a cuboid structure, its height is 250 mm - 300 mm, and its thickness is 200 mm. The first steel bar holes 51 are vertically provided through the precast anti-curb 50. Installation steel bars 18 are embedded on the top-layer precast floor slab 30. The edge of the top-layer precast floor slab 30 horizontally extends outwards towards the precast vertical member to form a cantilever, and a drip line 53 is provided at the bottom of the cantilever. The second steel bar holes 52 are vertically provided through the top-layer precast floor slab 30. The connecting steel bars 2 of the precast vertical member extend into the second steel bar holes 52, and the installation steel bars 18 extend into the first steel bar holes 51, and the first steel bar holes 51 and the second steel bar holes 52 are filled with concrete. A slurry layer 19 is filled between the precast anti-curb 50 and the precast floor slab 30. The thickness of the slurry layer 19 is 20 mm, and the slurry layer 19 is high-strength grouting material. A sealing mortar layer is filled around the slurry layer 19, so as to reinforce the connection strength between the strip foundation 17 and the vertical member.

[0077] Such as Figure 19 、 20As shown in the figure, the precast caisson 40 is made of reinforced concrete. The precast caisson 40 has a box structure with an upward opening. The depth of the precast caisson 40 is 400 mm, and its wall thickness is 100 mm. The upper edge of the precast caisson 40 extends horizontally outwards to form an outer flange 41. Two layers of steel bars are embedded in the precast caisson 40. Each layer of steel bars consists of connecting steel bars 2 that crisscross. Each connecting steel bar 2 extends out of the outer flange 41. The end of the connecting steel bar 2 is bent at a 90° angle, and the extending lengths of the upper and lower layers of connecting steel bars 2 are different. Drainage holes 42 are opened at the bottom of the precast caisson 40, and a water stop joint for connecting the upper and lower main drain pipes is installed in the drainage holes 42.

[0078] Connection structure between the precast caisson 40 and the precast beam 20:

[0079] As Figure 21 shown in the figure, the outer flanges 41 around the precast caisson 40 are respectively lapped on the four precast beams 20. The precast floor slab 30 is lapped on the other side of the precast caisson 40 relative to the precast beam 20. The three enclose a post-cast strip 26. The connecting steel bars 2 of the precast caisson 40, the precast floor slab 30, and the shear-resistant steel bars 21 of the precast beam 20 extend into the post-cast strip 26. When the width of the post-cast strip 26 is 170 mm, the connecting steel bars 2 extending into the post-cast strip 26 of each precast component are at least 145 mm. The post-cast strip 26 is filled with concrete, and the concrete is micro-expansion fine aggregate concrete.

[0080] Example 2

[0081] In the precast vertical component, the precast horizontal component, and the precast caisson 50, pipeline conduits 31 are embedded. Handhole grooves 32 are provided on the sides of each precast component. The original steel bar system of each precast component is retained in the handhole grooves 32. The free ends of the pipeline conduits 31 extend into the handhole grooves 32 and are flush with the sides of the precast components, so as to facilitate the connection with the pipeline conduits 31 of adjacent precast components. The handhole grooves 32 of two adjacent precast components correspond to each other. The depth and width of the handhole grooves 32 are 200 mm. Through the above settings, when the pipeline conduits 31 of the precast components are docked with the pipeline conduits 31 of adjacent building components, if the two pipeline conduits 31 are not aligned, the angle of the pipeline conduits 31 can be adjusted through the movable space of the handhole grooves 32 to make the two pipeline conduits 31 accurately correspond.

[0082] Electrical holes 33 for connecting with lamps and the like are provided on the plate surface of the precast floor slab 30 and the ground surface of the precast caisson 50. The electrical holes 33 are communicated with the pipeline conduits 31; Socket holes for installing sockets, switches, etc. are provided on the plate surface of the precast wall panel 11. The socket holes are communicated with the pipeline conduits 31.

[0083] Example 3

[0084] The tops of the prefabricated vertical components and prefabricated transverse components are provided with hanging grooves 7, which are preferably hemispherical, and a hanging piece 8 is buried in the hanging grooves 7. The hanging piece 8 is a structure with large ends and small in the middle. Specifically, the top of the hanging piece 8 is a disc or a hemisphere, and the bottom of the hanging piece 8 (the part buried in the concrete column 1) is a disc, or it can be formed by a plurality of steel bars distributed equidistantly. The top of the hanging piece 8 is located in the hanging groove 7 and does not exceed the top surface of each prefabricated vertical component or prefabricated transverse component. After the hanging is completed, the present scheme does not need to cut off the hanging piece 8 protruding from the surface of the prefabricated component, thus reducing the construction process. At the same time, when the concrete is cast in place, the connection strength between the cast-in-place concrete layer and the concrete column 1 is enhanced due to the hanging groove 7 recessed in the concrete column 1 and the top structure of the hanging piece 8 in the form of a disc or a hemisphere.

[0085] Example 4

[0086] The upper side of the prefabricated vertical member and the prefabricated beam 20 is pre-embedded with a second threaded sleeve 10, and the second threaded sleeve 10 is detachably connected with an adjustable support device independently developed by the applicant, and the adjustable support device includes a fixing plate 60 and a support unit, and the fixing plate 60 is provided with two connection holes, and the two connection holes are used to fasten the fixing plate 60 to the prefabricated column by bolts. A connecting piece 62 is welded between the two connection holes, and the connecting piece 62 is a connecting block, and a mounting hole is vertically penetrated on the connecting block (in another embodiment, the connecting piece 62 is two symmetrically arranged connecting plates, and the two connecting plates are welded and fixed with a connecting tube 63), and the support unit includes a supporting plate 65 and a supporting rod 64 welded to the bottom of the supporting plate 65, and the supporting rod 64 is threadedly connected with an adjusting nut 61, and the supporting rod 64 is inserted into the mounting hole / connecting tube 63.

[0087] For example, when installing the prefabricated beam 20 on the prefabricated vertical component, the adjustable support device is fixed on the special-shaped column by passing the bolt through the connection hole of the adjustable support device and screwing it on the threaded sleeve 10, and then the prefabricated beam 20 is placed on the adjustable support device for support. When the horizontal height of the prefabricated beam 20 needs to be adjusted, the adjustment nut can be screwed with a wrench. In this way, there is no need to set up a scaffold to support the prefabricated beam 20, thereby reducing the construction process of scaffolding erection and disassembly, greatly improving the construction efficiency. At the same time, after the construction of the prefabricated beam 20 is completed, the adjustable support device can be disassembled from the threaded sleeve 10 for reuse.

[0088] The above are only embodiments of the present utility model, and common general technical solutions and / or characteristics in the solutions are not described in detail herein. It should be noted that for those skilled in the art, without departing from the technical solutions of the present utility model, several deformations and improvements can be made, and these should also be regarded as the protection scope of the present utility model, and these will not affect the implementation effect of the present utility model and the practicality of the patent. The protection scope claimed in this application shall be subject to the content of its claims, and the specific implementation manners and the like recorded in the specification can be used to interpret the content of the claims.

Claims

1. A fully assembled concrete multi-storey building system, characterized in that: It comprises a prefabricated vertical component and a prefabricated horizontal component made of reinforced concrete, the connecting steel bars of the prefabricated vertical component extend out of the top thereof, and a grouting pipe is provided at the bottom of the prefabricated vertical component; the prefabricated horizontal component comprises a prefabricated beam and a prefabricated floor slab, the top of the prefabricated beam is provided with a shear steel bar, the connecting steel bars at the upper and lower ends of the prefabricated beam extend outward along the length direction thereof, and the connecting steel bars of the prefabricated beam are bent along the thickness direction of the prefabricated beam, and the connecting steel bars extending out of the prefabricated beam are in a straight line shape; the prefabricated floor slab is provided with two layers of crisscross connecting steel bars, the connecting steel bars of the prefabricated floor slab along the length direction thereof extend outward, and the free ends of the connecting steel bars are in a bent shape; The prefabricated vertical components are fixedly connected to the foundation; The precast beam is overlapped on two adjacent precast vertical components, a post-cast strip is formed between the ends of the precast beam and the precast vertical component, and the connecting steel bars of the precast beam extend into the post-cast strip; The ends of the precast slabs are overlapped on the precast beams, the ends of the adjacent precast slabs and the precast beams form a post-cast strip, and the connecting steel bars of the precast slabs and the shear steel bars of the precast beams extend into the post-cast strip; The post-cast zone is filled with concrete.

2. A fully assembled concrete multi-storey building system according to claim 1, characterized in that: It also includes a prefabricated caisson, which is a reinforced concrete structure. The prefabricated caisson is a box structure with an opening facing upward. The upper edge of the prefabricated caisson extends horizontally outward to form an outer flange. The connecting steel bars of the prefabricated caisson extend out of the outer flange, and the ends of the connecting steel bars are bent.

3. A fully assembled concrete multi-storey building system according to claim 2, characterized in that: The depth of the prefabricated caisson is 400 mm and the wall thickness is 100 mm.

4. A fully assembled concrete multi-storey building system according to claim 3, characterized in that: Installation steel bars are buried in the foundation and extend upward into the grouting pipe fittings, which are filled with cement mortar.

5. A fully assembled concrete multi-storey building system according to claim 4, characterized in that: A wire tube is buried in the prefabricated vertical component and the prefabricated horizontal component. The sides of the prefabricated vertical component and the prefabricated horizontal component are provided with a hand hole groove, and the free end of the wire tube extends into the hand hole groove.

6. A fully assembled concrete multi-story building system according to claim 5, characterized in that: Anchor plates are provided at the ends of the connecting steel bars extending out of the precast beams.

7. A fully assembled concrete multi-story building system according to claim 6, characterized in that: The tops of the prefabricated vertical components and prefabricated horizontal components are provided with hanging grooves, in which hanging parts are buried, and the tops of the hanging parts are located in the hanging grooves and do not exceed the top surfaces of the prefabricated vertical components or prefabricated horizontal components.

8. A fully assembled concrete multi-story building system according to claim 7, characterized in that: The two side ends of the prefabricated vertical components are respectively provided with mounting grooves and mounting protrusions, and the mounting grooves and mounting protrusions of two adjacent prefabricated vertical components are butt-jointed and mounted.

9. A fully assembled concrete multi-story building system according to claim 8, characterized in that: A plurality of connection grooves are arranged on the side of the wall surface of the prefabricated vertical component, and connection steel plates are fixed in the connection grooves corresponding to two adjacent prefabricated vertical components.

10. A fully assembled concrete multi-story building system according to claim 9, characterized in that: A waterproof anti-slope is provided on the prefabricated floor slab located on the top surface of the building system.

Images