CN111663682A - Assembly type wall body connecting structure based on ribbed box and construction method thereof - Google Patents
Assembly type wall body connecting structure based on ribbed box and construction method thereof Download PDFInfo
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- CN111663682A CN111663682A CN202010677043.9A CN202010677043A CN111663682A CN 111663682 A CN111663682 A CN 111663682A CN 202010677043 A CN202010677043 A CN 202010677043A CN 111663682 A CN111663682 A CN 111663682A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/162—Connectors or means for connecting parts for reinforcements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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Abstract
The invention discloses an assembly type wall body connecting structure based on a ribbed box and a construction method thereof, wherein the assembly type wall body connecting structure comprises a prefabricated wall board, a through-length longitudinal rib is arranged in the prefabricated wall board, a ribbed connecting box is pre-embedded at the bottom end of the prefabricated wall board, the upper end of the longitudinal rib is exposed out of the top end of the prefabricated wall board, and the lower end of the longitudinal rib is fixedly connected with the ribbed connecting box; the ribbed connecting box comprises a ribbed box body and a threaded sleeve, the ribbed box body is pre-embedded at two sides of the bottom end of the prefabricated wallboard, the threaded sleeve is vertically fixed at the top end of the ribbed box body, and the lower end of a longitudinal rib in the prefabricated wallboard is fixedly arranged in the threaded sleeve in a penetrating manner; the upper ends of the longitudinal ribs of the lower layer of prefabricated wall panel extend into the ribbed connecting box of the upper layer of prefabricated wall panel; the vertical anchor bars are connected with the ribbed connecting boxes to realize the assembly and connection of upper and lower walls and floors; the vertical anchor bars are arranged in the prefabricated wall board in the whole length mode, the stress of the prefabricated wall board can be accurately transmitted to the vertical adjacent wall body, the force transmission is clear, the structural stability is good, and the assembling efficiency is high.
Description
Technical Field
The invention belongs to the technical field of connection of assembled shear wall structures, and particularly relates to an assembled wall body connecting structure based on a ribbed box and a construction method of the assembled wall body connecting structure.
Background
The assembly type building integrates standardized design, factory production, assembly construction and intelligent management, is green and energy-saving, and has superior quality; according to the characteristics of the fabricated building, the split design, the earthquake-resistant design and the fine design are core tasks of the fabricated structure design. The prefabricated components are manufactured in an industrial centralized production mode in the fabricated building, and the quality of the components is superior to that of a cast-in-place structure through a standard manufacturing process and a standard maintenance method.
The assembled shear wall structure is a main lateral force resisting component of a high-rise or medium-low-rise structure and serves as a main stress part of the structure, and the reliable connection of a joint interface is a main factor for restricting the rapid development of the assembled building structure. The connecting technology needs to reliably transmit the stress between the upper and lower stressed components, ensure the coordinated deformation of each component and ensure the overall anti-seismic performance of the structure; particularly for a medium-low-rise residential structure adopting a fully-assembled shear wall structure, the joints between upper and lower-rise wall members or between prefabricated wall boards and floor slabs are mainly connected in a cast-in-place mode, reinforcing steel bars are reserved at the joints of the wall boards, binding and lapping of the reinforcing steel bars are carried out, and joint concrete is poured in the site. The assembly mode causes large concrete pouring amount, complicated operation of partial wet operation, certain environmental pollution problem and interface connection problem of new and old concrete at the joint interface.
At present, sleeve grouting connection is commonly adopted in engineering application of an assembly type building structure, and the connection mode is that reinforcing steel bars at a connection part extend into a special high-strength sleeve with a concave-convex groove on the inner wall, and upper and lower layer connection reinforcing steel bars are firmly connected with the sleeve by injecting high-strength non-shrinkage grouting material; the connection method ensures reliable transmission between the upper layer stress member and the lower layer stress member, but the specially-made threaded sleeve is higher in manufacturing cost, and the embedded sleeve inside belongs to hidden engineering, so that a reliable quality evaluation method is lacked, and the influence of construction environment and operation technology is larger.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides an assembly type wall body connecting structure based on a ribbed box and a construction method thereof.
In order to achieve the purpose, the invention adopts the technical scheme that:
the invention provides an assembly type wall body connecting structure based on a ribbed box, which comprises a prefabricated wall plate, wherein longitudinal ribs are arranged in the prefabricated wall plate in a through length mode, the ribbed connecting box is embedded in the bottom end of the prefabricated wall plate in a pre-embedded mode, and the ribbed connecting box is arranged corresponding to the longitudinal ribs; the upper ends of the longitudinal ribs are exposed out of the top end of the prefabricated wall board, and the lower ends of the longitudinal ribs are fixedly connected with the ribbed connecting box;
the ribbed connecting box comprises a ribbed box body and a threaded sleeve, the ribbed box body is pre-embedded at two sides of the bottom end of the prefabricated wallboard, the threaded sleeve is vertically fixed at the top end of the ribbed box body, and the lower end of a longitudinal rib in the prefabricated wallboard is fixedly arranged in the threaded sleeve in a penetrating manner; the upper ends of the longitudinal ribs of the lower layer of prefabricated wall panel extend into the ribbed connecting box of the upper layer of prefabricated wall panel and are fixedly connected together through nuts.
Furthermore, the ribbed box body comprises an upper flange plate, a lower flange plate, two side plates and a middle rib plate, wherein the upper flange plate and the lower flange plate are horizontally arranged in parallel, the two side plates are respectively symmetrically arranged at two ends of the upper flange plate and the lower flange plate, and the side plates are perpendicular to the prefabricated wall plate; the middle rib plate is vertically arranged between the upper flange plate and the lower flange plate and is parallel to the prefabricated wall plate;
the threaded sleeve is vertically arranged above the upper flange plate, and the threaded sleeve is connected with the upper flange plate through bolts; the upper flange plate is provided with a sleeve fixing hole, and the upper end of the bolt penetrates through the sleeve mounting hole and is fixedly arranged in the threaded sleeve;
the lower flange plate is provided with a steel bar mounting hole which is arranged in a centering way with the sleeve fixing hole; the upper end of the longitudinal rib of the lower layer of prefabricated wall panel is arranged in the reinforcing steel bar mounting hole in a penetrating mode, and the longitudinal rib is fixedly connected with the lower flange plate through the nut.
Further, the reinforcing steel bar mounting holes are round-angle rectangular holes; a base plate is arranged between the nut and the lower flange plate, and a base plate is arranged between the bolt and the upper flange plate.
Furthermore, the ribbed box body is filled with fine aggregate concrete.
Furthermore, the prefabricated wall board adopts a composite wall structure; the composite wall structure comprises two side rib columns, a plurality of middle rib columns, a plurality of rib beams, building blocks and a concrete surface layer; the side rib columns, the middle rib columns and the rib beams form a lattice structure, building blocks are filled in the lattice structure, and the concrete surface layer is coated on the outer sides of the lattice structure and the building blocks; the longitudinal bars vertically penetrate through the side rib columns, and the ribbed connecting box is embedded at the bottom ends of the side rib columns.
Furthermore, a plurality of stirrups are uniformly arranged on the longitudinal bars, and concrete is coated outside the longitudinal bars, the stirrups and the ribbed connecting box.
Furthermore, the building blocks are sand aerated concrete blocks or ash aerated concrete blocks.
Furthermore, when the lower end of the prefabricated wall board is connected with the ground, a plurality of embedded anchor bars are uniformly arranged in the foundation and correspond to the ribbed box body in the prefabricated wall board; the upper end of the embedded anchor bar extends into the ribbed box body and is fixedly connected with the ribbed box body through a nut.
Furthermore, the contact surfaces between the adjacent prefabricated wall boards and between the prefabricated wall boards and the floor slab or the ground are sealed by mortar.
The invention also provides a construction method of the assembled wall body connecting structure based on the ribbed box, which comprises the following steps:
step 2, manufacturing a prefabricated wallboard; specifically, binding wall reinforcing steel bars, exposing the upper ends of the longitudinal bars out of the top ends of the prefabricated wall boards, fixedly connecting the lower ends of the longitudinal bars with the ribbed connecting boxes, placing building blocks, erecting a mold, pouring concrete, and removing the mold to obtain the prefabricated wall boards;
and 4, sealing the bolt hand hole of the ribbed connecting box to obtain the assembled wall structure.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides an assembly type wall body connecting structure based on a ribbed box, wherein longitudinal bars and a ribbed connecting box are arranged in a prefabricated wall board, and the longitudinal bars are arranged in the prefabricated wall board in a full length mode, so that the assembly type wall body connecting structure not only plays a role of stressed steel bars, but also plays a role of connecting the steel bars; the longitudinal ribs between the vertical walls are connected into a whole through the ribbed connecting box, so that the assembly connection of the upper and lower walls is realized, the stress of the prefabricated wall board can be reliably transmitted to the vertically adjacent walls, the force transmission is clear, the effective transmission of stress is ensured, and the integrity and the connection rigidity of the assembled wall are effectively improved; the longitudinal ribs and the ribbed box body are connected through nuts, so that the structural stability is good, the assembly process is simple, and the assembly efficiency is higher.
Furthermore, the ribbed box body is formed by combining an upper flange plate, a lower flange plate, a side plate and a middle rib plate, and bolt hand holes are formed in two sides of the middle rib plate, so that the longitudinal ribs can be conveniently adjusted and the nuts can be conveniently installed and fixed during assembly, and the tightness of structural connection can be conveniently checked; the stability of the structure is effectively guaranteed by arranging the middle rib plate.
Further, the reinforcing steel bar mounting holes are round-angle rectangular holes, so that longitudinal bars can be accurately inserted into the ribbed box body conveniently, the positions of the longitudinal bars can be adjusted conveniently, and the assembly efficiency of the wall body is effectively improved.
Furthermore, by pouring fine aggregate concrete into the ribbed box body, the contact area between the concrete and the longitudinal ribs and between the concrete and the ribbed box body is effectively increased, the ribbed box body, the longitudinal ribs and the member concrete are ensured to be bonded with each other and play a role together, and the deformation of the nut can be effectively restrained; the fine aggregate concrete forms the protective layer of metal junction box, ensures to add the rib junction box and avoids the corrosion destruction, has improved the durability of connecting, simultaneously, conveniently handles the wall body decorative layer.
Furthermore, the composite wall structure adopts rib columns and rib beams to form a lattice structure, and the building blocks, the lattices and the edge connecting members can sequentially play a main role under the action of small earthquake, medium earthquake and large earthquake, release earthquake energy stage by stage, have definite multiple earthquake-proof defense lines and have the stress characteristic of ductility earthquake resistance; the ribbed connecting box is arranged at the corner of the wall body under large stress, so that the accuracy and the connection rigidity of structural connection are ensured, and the complexity of wallboard connection is reduced.
Furthermore, the building blocks are sand aerated concrete blocks or ash aerated concrete blocks, and recycled aggregate concrete is adopted to replace the traditional concrete material, so that the problems of raw material consumption and recycling of part of building wastes are effectively solved.
Furthermore, the contact surface between adjacent walls and the contact surface between the wall and a floor slab or the ground are sealed by mortar, so that the pressure balance of the walls is ensured, the connection reliability is effectively improved, and the bottom crack penetration phenomenon of the walls is effectively avoided.
The invention also provides a construction method of the assembled wall body connecting structure based on the ribbed box, when the wallboard is assembled, the longitudinal ribs are inserted into the ribbed connecting box, the longitudinal ribs are fixedly connected by adopting the nuts, and then the ribbed connecting box is sealed by adopting fine aggregate concrete or mortar, so that the assembling process is simple, the construction safety is high, the production construction efficiency of the assembled wallboard is effectively improved, the assembling quality is improved, the mechanical property of the wall body is improved, and the cost is greatly reduced.
According to the assembling type wall body connecting structure based on the ribbed box and the construction method thereof, assembling connection between wallboards and between the wallboards and a floor slab or the ground is realized by adopting a dry connecting technology; the dry type connecting technology has the characteristics of high connecting precision, short construction period, easy repair after an earthquake and the like; the invention has good bearing capacity, better energy consumption capability and excellent comprehensive seismic performance. The design is reasonable, the construction is convenient and fast, and the connection performance is good; the method can be well applied to the field of connection of the prefabricated concrete structure, is green and environment-friendly, realizes mechanized construction, and accords with the development trend of building industrialization.
Drawings
FIG. 1 is a schematic elevational view of an assembled wall connection structure based on ribbed boxes according to the present invention;
FIG. 2 is a longitudinal sectional view of the ribbed box based fabricated wall connection according to the present invention;
FIG. 3 is a cross-sectional view of an assembled wall connection structure based on ribbed boxes in accordance with the present invention
Fig. 4 is a schematic structural view of a ribbed connection box in the ribbed box-based assembled wall connection structure according to the present invention.
The prefabricated wall plate comprises an upper prefabricated wall plate 1, a floor plate 2, a lower prefabricated wall plate 3, side rib columns 4, middle rib columns 5, rib beams 6, building blocks 7, nuts 8, backing plates 9, longitudinal ribs 10, stirrups 11, ribbed connecting boxes 12, ribbed box bodies 13, threaded sleeves 14 and bolts 15, wherein the upper prefabricated wall plate is a hollow plate; 131 upper flange plate, 132 lower flange plate, 133 side plate, 134 middle rib plate; 201 overlapping the bottom plate, 202 cast-in-place layer.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects of the present invention more apparent, the following embodiments further describe the present invention in detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in the attached drawings 1-4, the invention provides an assembly type wall body connecting structure based on a ribbed box, which comprises an upper prefabricated wall plate 1, a floor plate 2 and a lower prefabricated wall plate 3; the upper prefabricated wall plate 1, the floor slab 2 and the lower prefabricated wall plate 3 are sequentially connected from top to bottom; the lower end of the lower prefabricated wall plate 3 is connected with the lower layer of prefabricated wall plate or the ground.
Go up prefabricated wallboard 1 in the logical length be provided with vertical reinforcement 10, go up the pre-buried ribbed connecting box 12 that has in bottom of prefabricated wallboard 1, go up ribbed connecting box 12 in prefabricated wallboard 1 and wherein vertical reinforcement 10 corresponds the setting, go up the top of prefabricated wallboard 1 is exposed to the upper end of vertical reinforcement 10 in prefabricated wallboard 1, lower extreme and the ribbed connecting box 12 fixed connection in prefabricated wallboard 1.
The lower prefabricated wall plate 3 has the same structure as the upper prefabricated wall plate 1; longitudinal ribs 10 are arranged in the lower prefabricated wall plate 3 in a through-length mode, ribbed connecting boxes 12 are embedded at the bottom end of the lower prefabricated wall plate 3, the ribbed connecting boxes 12 in the lower prefabricated wall plate 3 are arranged corresponding to the longitudinal ribs 10, and the longitudinal ribs in the lower prefabricated wall plate 3 are arranged corresponding to the ribbed connecting boxes in the upper prefabricated wall plate 1; the upper end of the longitudinal rib 10 in the lower prefabricated wall plate 3 is exposed out of the top end of the lower prefabricated wall plate 3, and the lower end of the longitudinal rib is fixedly connected with the ribbed connecting box in the lower prefabricated wall plate 3.
When the upper end of prefabricated wallboard 3 is connected with last prefabricated wallboard 1 down, the upper end of the vertical muscle in prefabricated wallboard 3 runs through floor 2 back down, stretches into in the ribbed connecting box in last prefabricated wallboard 1 to through nut with the vertical muscle in prefabricated wallboard 3 down with last prefabricated wallboard 1 in ribbed connecting box fixed connection together, realized the assembly joint between prefabricated wallboard 3 and last prefabricated wallboard 1 down.
When the lower extreme of prefabricated wallboard 3 is connected with the prefabricated wallboard of next floor down, the upper end of the vertical muscle in the prefabricated wallboard of next floor runs through the coincide floor of next floor after, stretches into in the ribbed connecting box in prefabricated wallboard 3 down to the nut is in the same place vertical muscle in the prefabricated wallboard of next floor and the ribbed connecting box fixed connection in prefabricated wallboard 3 down, has realized the assembly joint between prefabricated wallboard 3 of next floor and the prefabricated wallboard of next floor down.
When the lower end of the lower prefabricated wall plate 3 is connected with the ground, a plurality of embedded anchor bars are uniformly arranged in the foundation, and the embedded anchor bars are arranged corresponding to the ribbed connecting boxes in the lower prefabricated wall plate 3; the lower extreme of pre-buried anchor bar is fixed to alternate in the ground, and the upper end of pre-buried anchor bar stretches into under in the prefabricated wallboard 3 add the rib connecting box to through the nut with pre-buried anchor bar and add rib connecting box fixed connection together, realized the assembly connection between prefabricated wallboard 3 and the ground down.
The ribbed connecting box 12 in the upper prefabricated wall plate 1 is completely the same as the ribbed connecting box 12 in the lower prefabricated wall plate 3, the ribbed connecting box 12 comprises a ribbed box body 13 and a threaded sleeve 14, and the ribbed box body 13 is pre-embedded at two sides of the bottom end of the upper prefabricated wall plate 1 or the lower prefabricated wall plate 3; the threaded sleeve 14 is vertically fixed on the top end of the ribbed box body 13, the lower end of the longitudinal bar 10 penetrates through the threaded sleeve 14, and the longitudinal bar 10 is fixedly connected with the threaded sleeve 14 through threads.
The ribbed box body 13 comprises an upper flange plate 131, a lower flange plate 132, two side plates 133 and a middle rib plate 134, wherein the upper flange plate 131 and the lower flange plate 132 are horizontally arranged in parallel, the two side plates 133 are respectively symmetrically arranged at two ends of the upper flange plate 131 and the lower flange plate 132, the side plates 133 are perpendicular to the prefabricated wall plate to form a box body structure with openings at two sides, and the opening surfaces are flush with the surfaces of the upper prefabricated wall plate 1 or the lower prefabricated wall plate 3; the middle rib 134 is vertically arranged between the upper flange plate 131 and the lower flange plate 132, the middle rib 134 is parallel to the prefabricated wall panel, and the middle rib 134 is vertically positioned in the middle of the upper flange plate 131 or the lower flange plate 132.
The threaded sleeves 14 are vertically arranged above the upper flange plates 131, and the threaded sleeves 14 are arranged in one-to-one correspondence with the longitudinal ribs 10; the upper flange plate 131 is provided with a sleeve fixing hole, the lower end of the threaded sleeve 14 is tightly contacted with the upper surface of the upper flange plate 131, and the axis of the threaded sleeve 14 is arranged in a centering way with the sleeve fixing hole; the threaded sleeve 14 is fixedly connected with the upper flange plate 131 through a bolt 15, the upper end of the bolt 15 penetrates through a sleeve fixing hole in the upper flange plate 131 and then extends into the threaded sleeve 14, and the bolt 15 is fixedly connected with the threaded sleeve 14 through threads.
Preferably, the reinforcing steel bar mounting holes are round-angle rectangular holes, so that longitudinal bars or embedded anchor bars in a foundation can be conveniently inserted into the ribbed box body and the position of the prefabricated wall board can be conveniently adjusted, and the accurate installation of the prefabricated wall board is ensured; a backing plate 9 is arranged between the nut and the lower flange plate 132, the backing plate 9 is arranged between the bolt 15 and the upper flange plate 131, and the bolt 15 is a high-strength bolt.
Preferably, the thickness of the lower flange plate 132 is greater than the thickness of the upper flange plate 131 due to the greater force applied to the bottom of the ribbed junction box; meanwhile, the thickness of the cushion plate between the nut and the lower flange plate 132 is larger than that between the bolt 15 and the upper flange plate, so that the connection strength of the ribbed connection box is effectively ensured.
The upper prefabricated wall plate 1 and the lower prefabricated wall plate 3 both adopt composite wall structures, and each composite wall structure comprises two side rib columns 4, a plurality of middle rib columns 5, a plurality of rib beams 6, building blocks 7 and a concrete surface layer; two 4 vertical parallel arrangement of limit rib post, the vertical interval setting of a plurality of well rib post 5 between two limit rib posts 4, 6 levels of a plurality of girts set up between 4 and well rib post 5 of limit rib post, and limit rib post 4, well rib post 5 and 6 formation sash structure of rib roof beam are filled with building block 7 in the sash structure, and the cladding of concrete surface course forms composite wall structure in the outside of sash structure and building block 7.
The longitudinal ribs vertically penetrate through the side rib columns 4, the upper ends of the longitudinal ribs are exposed out of the top ends of the side rib columns 4, the ribbed connecting box 12 is embedded at the bottom ends of the side rib columns 4, and the lower flange plates 132 of the ribbed box body 13 are flush with the bottom ends of the side rib columns 4; the number of the longitudinal ribs 10 in the side rib column 4 is four, the four longitudinal ribs 10 are uniformly arranged at four column corners of the side rib column 4, the threaded sleeves 14 are arranged in one-to-one correspondence with the longitudinal ribs 10, two of the threaded sleeves 14 are arranged on one side of a middle rib plate, and the other two threaded sleeves 14 are arranged on the other side of the middle rib plate; a plurality of stirrups 11 are uniformly arranged on longitudinal reinforcements 10 in the side rib columns 4, and concrete casting bodies are coated on the outer sides of the longitudinal reinforcements 10, the stirrups 11 and the ribbed connecting boxes 12; the development of building block cracks is effectively limited by arranging the longitudinal bars and the stirrup structures on the side rib columns 4, and the bearing capacity of the wall body is improved.
The invention adopts the rib columns and the rib beams to form a lattice structure, and the building blocks, the lattices and the edge connecting members can sequentially play a main role under the action of small earthquake, medium earthquake and large earthquake, release earthquake energy stage by stage, have definite multi-seismic-resistant defense lines and have the stress characteristic of ductility and earthquake resistance; meanwhile, the method of internally arranging the ribbed connecting box does not damage the wall body, reduces the damage to the wall plate structure and saves materials and working procedures; the longitudinal bars are arranged in the prefabricated wall board in a full-length mode, so that the strength of the wall body is improved, and the stability of the structure is improved.
In the invention, the building block 7 is a sand aerated concrete building block or a lime aerated concrete building block, the sand aerated concrete building block or the lime aerated concrete building block is a light porous silicate product prepared by using siliceous materials such as sand and calcareous materials, lime and cement as main raw materials, adding a gas former such as aluminum powder and carrying out the processes of proportioning, stirring, pouring, pre-curing, cutting, autoclaving, curing and the like, and the concrete adopts recycled aggregate to replace the traditional concrete material; effectively relieving the problems of consumption of raw materials and recycling of part of construction wastes.
The contact surface between the adjacent upper prefabricated wall plate 1 or the lower prefabricated wall plate 3 is sealed by mortar; the contact surface between the upper prefabricated wall panel 1 and the floor slab 2 is sealed by mortar; the contact surface between the lower prefabricated wall plate 3 and the floor slab 2 or the ground is sealed by mortar; the pressure balance of the wall body is ensured, the connection reliability is effectively improved, and the phenomenon of crack penetration at the bottom of the wall body can be avoided.
A reinforcing steel bar through hole is formed in the floor slab 2, the upper end of the longitudinal bar penetrates through the reinforcing steel bar through hole, and mortar is poured into the reinforcing steel bar through hole; the floor slab 2 comprises a prefabricated composite bottom plate 201 and a cast-in-place layer 202, wherein the cast-in-place layer 202 is arranged on the upper portion of the prefabricated composite bottom plate 201.
The invention relates to an assembly type wall body connecting structure based on a ribbed box and a construction method thereof, which are applicable to a dry type connecting method of horizontal joints of prefabricated wall plate structures.
According to the invention, the position of the ribbed connecting box is determined according to the structural design, the ribbed connecting box is arranged at a pulling and pressing corner part with larger stress on a wall body, when an upper prefabricated wallboard is manufactured, the ribbed connecting box is embedded at the positioning part of a connecting piece, the lower end of a longitudinal rib is provided with an external thread, and the external thread is screwed into a threaded sleeve on a ribbed box body; the threaded sleeve and the ribbed box body are firmly connected by bolts; the bottom of the ribbed connecting box is flush with the edge of the bottom end of the wallboard, and the outer edge of the ribbed connecting box has enough thickness of the protective layer; for the reliable biography power of guaranteeing to add rib connecting box and the inside vertical muscle of prefabricated wallboard, before prefabricated wallboard pours down, the vertical muscle upper end of prefabricated wallboard sets up the screw thread section equally down, and the top of prefabricated wallboard is about 200mm under its top stretches out for connect.
When the wall boards are connected, the upper prefabricated wall board, the composite floor board and the lower prefabricated wall board are aligned according to design, longitudinal ribs of the lower prefabricated wall board penetrate through the composite floor board and then extend into rounded rectangular holes at the bottom of a ribbed connecting box at the corners of the upper prefabricated wall board, the abutted seam interfaces of the upper layer wall body and the lower layer wall body are tightly attached, and a base plate penetrates through the longitudinal ribs in the lower prefabricated wall board and is arranged on the lower surface of a ribbed box body and is screwed and fixed by nuts; the ribbed box body is firmly connected with the longitudinal ribs of the prefabricated wallboard of the layer through the threaded sleeves, and the longitudinal ribs of the prefabricated wallboard of the next layer are connected through the nuts, so that the direct force transmission of the longitudinal ribs is ensured, and the stress is reliable; in the same way, the method is also suitable for the connection of the horizontal splicing seam between the prefabricated wall panel and the prefabricated foundation component.
According to the invention, the ribbed box body adopts a steel box type structure, the ribbed box body adopts an integral outer frame formed by welding an upper steel plate, a lower steel plate, a left steel plate, a right steel plate and a left steel plate, a middle ribbed plate is arranged in the integral outer frame, and four sides of the middle ribbed plate are respectively vertical to the outer side panel; wherein, the both sides of upper limb listrium symmetry about the middle part floor set up the screw sleeve, and the screw sleeve is used for indulging the muscle and is connected with the box body that adds the rib.
In the invention, the lower flange plate is a key panel for connection, and the thickness of the lower flange plate is larger than that of other panels. Two sides of the lower flange plate, which are symmetrical about the middle rib plate, are provided with round-corner rectangular holes for connecting longitudinal ribs in the lower prefabricated wall plate; preferably, the ribbed connecting box is integrally manufactured in a factory, the thread is arranged in the thread sleeve, and the internal thread is used for longitudinal bar connection; the end part of the threaded sleeve is connected with the threaded sleeve and the ribbed box body into a whole through a bolt and a base plate to form an integrated ribbed connecting box.
The longitudinal ribs are connected with the ribbed box body into a whole through the threaded sleeves, the ribbed connecting box is embedded in the corner of the upper prefabricated wallboard, the round-angle rectangular hole of the lower flange plate in the ribbed box body ensures the insertion of the longitudinal ribs in the lower prefabricated wallboard and the displacement adjustment in the fixing position, the longitudinal ribs in the lower prefabricated wallboard only need to be inserted during connection, the base plate is arranged, the nut is screwed, the upper prefabricated wallboard and the lower prefabricated wallboard can be connected into a whole, and the force transmission is reliable; the connection process is convenient and quick to operate, the connection quality is convenient to check, the connecting piece weakens the wall body little, the stress is direct, the force transmission is clear, the bearing capacity is high, the damage after the earthquake is replaceable, and the connecting device is suitable for horizontal seam connection of prefabricated wallboards.
The top of the upper end of the longitudinal rib of the lower prefabricated wallboard is provided with a thread with a proper length, the top of the lower prefabricated wallboard extends out, the lower prefabricated wallboard penetrates through the laminated floor slab, and the lower prefabricated wallboard is connected with the upper wall body through the matched backing plate and the nut in the round-angle rectangular hole of the ribbed box body extending into the upper prefabricated wallboard during assembly.
Before the connection, high-strength non-shrinkage mortar is paved at the top splicing seam of the lower prefabricated wallboard to be used for compactly connecting the splicing seam interfaces, and a certain connecting effect can be achieved, so that effective force transmission between the upper layer prefabricated wallboard and the lower layer prefabricated wallboard is guaranteed.
After the nuts are screwed down and checked to confirm that the bolts are correct, the bolt hand holes of the ribbed connecting box are filled with fine aggregate concrete or mortar, and the fine aggregate concrete or mortar is trowelled with the surfaces of the upper and lower wall bodies, so that the wall surface is smooth, the steel connecting pieces are protected, and the durability of the steel connecting pieces is improved.
The invention also provides a construction method of the assembled wall body connecting structure based on the ribbed box, which comprises the following steps:
Rolling two ends of the vertical anchor bar by using a special rolling machine tool, and forming threads at one time; manufacturing a threaded sleeve, wherein internal threads of the threaded sleeve correspond to external threads at the lower end of the longitudinal rib, the lower end of the threaded sleeve is connected with the ribbed connecting box body through a high-strength bolt, and the high-strength bolt is in threaded connection with the threaded sleeve; manufacturing two side plates, a middle rib plate and upper and lower flange plates, wherein the two side plates, the middle rib plate and the upper and lower flange plates are all made of steel plates; the two sides of the upper flange plate, which are symmetrical relative to the middle rib plate, are provided with sleeve fixing holes, the two sides of the lower flange plate, which are symmetrical relative to the middle steel rib plate, are provided with fillet rectangular holes for connection, all steel plates are welded according to the design requirement to form a ribbed box body with openings at two sides and ribbed at the middle part, and the end part of the threaded sleeve is connected with the upper flange plate by adopting bolts and gaskets to form a ribbed connection box; then, a base plate is manufactured, and nuts with corresponding specifications are prepared.
Step 2, manufacturing of standard prefabricated composite wallboard
Firstly, assembling a special steel template and manufacturing a steel reinforcement framework; fixing the ribbed connecting box at the bottom of a side rib column steel bar framework at a designed position along the thickness of the wall plate, screwing and connecting longitudinal bars in the steel bar framework with a threaded sleeve of the ribbed connecting box, and additionally arranging a reinforced stirrup in an anchoring area for local reinforcement; placing ecological blocks at the positions of the sash as light building blocks filled in, placing concrete protective layer cushion blocks, and placing the manufactured rib beams and the middle rib column steel reinforcement frameworks at corresponding positions; after the inspection is correct, pouring fine stone concrete while vibrating, paying attention to pouring of concrete around the ribbed corner connecting box, and ensuring that no concrete is poured into the ribbed box body; then, driving and leveling the dough, and carrying out standard maintenance; when the strength of the concrete meets the requirement, the template is removed, and the upper-layer standard prefabricated composite wallboard is formed; when the strength of the wallboard concrete reaches 75% of the design value, the hoisting connection can be carried out.
Step 4, after the high-strength nut is fixed, performing seam treatment; and leveling the splicing position of the two prefabricated wallboards by using mortar plastering, and filling the bolt hand hole of the ribbed connecting box by using fine aggregate concrete or high-strength non-shrinkage grouting material.
According to the assembled wall body connecting structure based on the ribbed box and the construction method thereof, the upper prefabricated wall plate and the lower prefabricated wall plate are connected in a dry mode, and compared with a traditional wet connection mode, the assembled wall body connecting structure has the advantages of being high in accuracy, convenient and fast to construct, capable of avoiding on-site formwork erecting at a connection position, environment-friendly, energy-saving, replaceable in later period, reliable in connection, clear in force transmission and the like, and accords with the development trend of building industrialization; the ribbed connecting box and the longitudinal ribs are matched and connected, and the ribbed connecting box is integrally formed in a factory and can be directly used for pre-buried installation. The ribbed connecting box is internally ribbed, so that the rigidity of the connecting piece is improved; the ribbed connecting boxes are symmetrical about the central axis in the thickness direction of the wall body, and nut connection is performed on two sides of the wall body, so that the wall body is uniform in stress, reliable in connection and high in bearing capacity; the ribbed connecting box is provided with a round-angle rectangular hole at the bottom of the lower flange plate, so that sufficient assembly tolerance is provided on the basis of ensuring reliable connection, the position of the lower longitudinal rib can be adjusted along the round-angle rectangular hole during assembly, the feasibility of construction operation is ensured, and the ribbed connecting box has high application and popularization values; the joint of the ribbed connecting box and the wallboard is closed, a template is formed by self, and the pre-embedding treatment of the connecting piece is convenient and quick in the manufacturing process of the prefabricated wallboard; the adopted seam splicing treatment mode is simple to operate and good in compactness.
The above-described embodiment is only one of the embodiments that can implement the technical solution of the present invention, and the scope of the present invention is not limited by the embodiment, but includes any variations, substitutions and other embodiments that can be easily conceived by those skilled in the art within the technical scope of the present invention disclosed.
Claims (10)
1. An assembly type wall body connecting structure based on a ribbed box is characterized by comprising a prefabricated wall board, wherein longitudinal ribs (10) are arranged in the prefabricated wall board in a through-length mode, ribbed connecting boxes (12) are pre-embedded at the bottom end of the prefabricated wall board, and the ribbed connecting boxes (12) are arranged corresponding to the longitudinal ribs (10); the upper ends of the longitudinal ribs (10) are exposed out of the top end of the prefabricated wall board, and the lower ends of the longitudinal ribs (10) are fixedly connected with the ribbed connecting box (12);
the ribbed connecting box (12) comprises ribbed box bodies (13) and threaded sleeves (14), the ribbed box bodies (13) are pre-embedded at two sides of the bottom end of the prefabricated wallboard, the threaded sleeves (14) are vertically fixed at the top end of the ribbed box bodies (13), and the lower ends of longitudinal ribs (10) in the prefabricated wallboard are fixedly arranged in the threaded sleeves (14) in a penetrating mode; the upper ends of the longitudinal ribs of the lower layer of prefabricated wall panel extend into the ribbed connecting box of the upper layer of prefabricated wall panel and are fixedly connected together through nuts (8).
2. The assembled wall body connecting structure based on the ribbed box according to claim 1, wherein the ribbed box body (13) comprises an upper flange plate (131), a lower flange plate (132), two side plates (133) and a middle rib plate (134), the upper flange plate (131) and the lower flange plate (132) are horizontally arranged in parallel, the two side plates (133) are respectively and symmetrically arranged at two ends of the upper flange plate (131) and the lower flange plate (132), and the side plates (133) are perpendicular to the prefabricated wall plate; the middle rib plate (134) is vertically arranged between the upper flange plate (131) and the lower flange plate (132), and the middle rib plate (134) is parallel to the prefabricated wall plate;
the threaded sleeve (14) is vertically arranged above the upper flange plate (131), and the threaded sleeve (14) is connected with the upper flange plate (131) through a bolt (15); the upper flange plate (131) is provided with a sleeve fixing hole, and the upper end of the bolt (15) penetrates through the sleeve mounting hole and is fixedly arranged in the threaded sleeve (14);
a steel bar mounting hole is formed in the lower flange plate (132), and the steel bar mounting hole and the sleeve fixing hole are arranged in a centering mode; the upper end of the longitudinal bar of the next layer of prefabricated wall panel is arranged in the reinforcing bar mounting hole in a penetrating mode, and the longitudinal bar is fixedly connected with the lower flange plate (132) through the nut (8).
3. The assembly type wall body connecting structure based on the ribbed box as claimed in claim 2, wherein the reinforcing steel bar installation hole is a rounded rectangular hole; a backing plate (9) is arranged between the nut (8) and the lower flange plate (132), and the backing plate (9) is arranged between the bolt (15) and the upper flange plate (131).
4. An assembled wall connection structure based on ribbed box according to claim 1 characterized in that ribbed box body (13) is poured with fine stone concrete.
5. The assembled wall connecting structure based on the ribbed box as claimed in claim 1, wherein the prefabricated wall board adopts a composite wall structure; the composite wall structure comprises two side rib columns (4), a plurality of middle rib columns (5), a plurality of rib beams (6), building blocks (7) and a concrete surface layer; the side rib columns (4), the middle rib columns (5) and the rib beams (6) form a lattice structure, building blocks (7) are filled in the lattice structure, and a concrete surface layer is coated on the outer sides of the lattice structure and the building blocks; the longitudinal ribs (10) vertically penetrate through the side rib columns (4), and the ribbed connecting box (12) is embedded at the bottom ends of the side rib columns (4).
6. The assembled wall body connecting structure based on the ribbed box is characterized in that a plurality of stirrups (11) are uniformly arranged on the longitudinal ribs (10), and concrete is coated on the outer sides of the longitudinal ribs (10), the stirrups (11) and the ribbed connecting box (12).
7. The ribbed box-based assembled wall connecting structure according to claim 5, wherein the blocks (7) are sand aerated concrete blocks or ash aerated concrete blocks.
8. The assembled wall body connecting structure based on the ribbed box is characterized in that when the lower end of the prefabricated wall board is connected with the ground, a plurality of pre-buried anchor bars are uniformly arranged in the foundation and correspond to the ribbed box bodies (13) in the prefabricated wall board; the upper ends of the embedded anchor bars extend into the ribbed box body (13) and are fixedly connected through nuts.
9. An assembly type wall body connecting structure based on a ribbed box according to claim 1, wherein the contact surface between the adjacent prefabricated wall boards and between the prefabricated wall boards and a floor slab or the ground is sealed by mortar.
10. A construction method of an assembly type wall body connecting structure based on a ribbed box is characterized by comprising the following steps:
step 1, processing and manufacturing a ribbed connecting box and longitudinal ribs according to design requirements;
step 2, manufacturing a prefabricated wallboard; specifically, binding wall reinforcing steel bars, exposing the upper ends of the longitudinal bars out of the top ends of the prefabricated wall boards, fixedly connecting the lower ends of the longitudinal bars with the ribbed connecting boxes, placing building blocks, erecting a mold, pouring concrete, and removing the mold to obtain the prefabricated wall boards;
step 3, hoisting the prefabricated wall board to an installation position, enabling longitudinal ribs in the next layer of prefabricated wall board or embedded anchor ribs in the foundation to extend into the ribbed connecting box of the upper layer of prefabricated wall board in a centering manner, and then fixedly connecting the ribbed connecting box with the longitudinal ribs or the embedded anchor ribs by nuts;
and 4, sealing the bolt hand hole of the ribbed connecting box to obtain the assembled wall structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010677043.9A CN111663682A (en) | 2020-07-14 | 2020-07-14 | Assembly type wall body connecting structure based on ribbed box and construction method thereof |
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| CN202010677043.9A CN111663682A (en) | 2020-07-14 | 2020-07-14 | Assembly type wall body connecting structure based on ribbed box and construction method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113073888A (en) * | 2021-04-08 | 2021-07-06 | 昌达建筑科技有限公司 | High-strength detachable wallboard and floor connecting structure |
| CN113944288A (en) * | 2021-11-19 | 2022-01-18 | 李霞 | Assembled concrete stair prefabricated component assembly structure |
-
2020
- 2020-07-14 CN CN202010677043.9A patent/CN111663682A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113073888A (en) * | 2021-04-08 | 2021-07-06 | 昌达建筑科技有限公司 | High-strength detachable wallboard and floor connecting structure |
| CN113944288A (en) * | 2021-11-19 | 2022-01-18 | 李霞 | Assembled concrete stair prefabricated component assembly structure |
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