CN111691578A - Reinforcing bar structure for integrally arranging edge member reinforcing bars on prefabricated wall and post-cast section - Google Patents
Reinforcing bar structure for integrally arranging edge member reinforcing bars on prefabricated wall and post-cast section Download PDFInfo
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- CN111691578A CN111691578A CN202010537549.XA CN202010537549A CN111691578A CN 111691578 A CN111691578 A CN 111691578A CN 202010537549 A CN202010537549 A CN 202010537549A CN 111691578 A CN111691578 A CN 111691578A
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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
- E04B2/56—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
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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
- 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
- E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction
- E04C5/165—Coaxial connection by means of sleeves
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/12—Mounting of reinforcing inserts; Prestressing
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Abstract
The invention discloses a reinforcement arrangement structure for arranging edge member reinforcements on a prefabricated wall and a post-pouring section in a lump. Based on the whole edge component that vertical post-cast section and prefabricated wall edge component formed, vertical reinforcing bar and stirrup in the whole edge component of overall configuration are planned, in shear force wall reinforcement structure allowed range, suitably enlarge prefabricated wall edge component vertical reinforcement interval, shift the prefabricated wall edge component vertical reinforcement adjacent with vertical post-cast section to vertical post-cast section in, increase the interval that the horizontal connection reinforcing bar stretches out on the prefabricated wall side simultaneously, dispose the stirrup respectively at vertical post-cast section and prefabricated wall edge component and form the subregion restraint to concrete formation in the whole edge component. The invention can reduce the number of the vertical steel bar connections of the edge component of the prefabricated wall and the number of the horizontal connecting steel bars extending out of the side surface by more than 30 percent, reduce the cost of the prefabricated wall and the processing and installation difficulty, and improve the reliability of the vertical steel bar connection in the integral edge component.
Description
Technical Field
The invention belongs to the technical field of buildings, relates to a prefabricated shear wall, and particularly relates to a reinforcement arrangement structure for arranging edge member reinforcements on a prefabricated wall and a post-cast section in a lump.
Background
At present, prefabricated walls adopted by the assembled integral shear wall structure in China are integrally prefabricated along the thickness direction of the wall body, vertical steel bars of prefabricated walls on upper and lower layers are connected at the root parts of the prefabricated walls through sleeve grouting, adjacent prefabricated walls in the same floor are connected through a vertical post-pouring section, and the side surfaces of the prefabricated walls extend out of horizontal connecting steel bars to be anchored in post-pouring concrete of the vertical post-pouring section.
When adjacent prefabricated walls are connected at the edge component position, the vertical post-cast section and the prefabricated wall edge component area form the edge component of the shear wall together after post-cast concrete is poured. In the existing structure proposed by the current national design standard and prefabricated wall design standard atlas, shear wall edge component vertical steel bars are respectively arranged in a vertical post-pouring section and a prefabricated wall edge component area, the combination relation of the vertical post-pouring section and the prefabricated wall edge component area is not considered comprehensively, so that more edge component vertical steel bars are arranged in the prefabricated wall edge component area, the vertical post-pouring section and the vertical steel bar interval of the edge component at the junction position of the prefabricated wall edge component area are closer, and waste to a certain degree is caused. Meanwhile, the cost of the steel bar joint (such as a sleeve grouting joint) adopted by the vertical steel bar connection of the upper and lower layers of prefabricated wall edge members is obviously higher than that of the steel bar joint (such as a straight thread joint) adopted by the vertical steel bar connection in the vertical post-cast section of the upper and lower layers, even higher than that of the vertical steel bar of the prefabricated wall edge members, and the more vertical steel bars of the existing prefabricated wall edge members further increase the joint cost.
On the other hand, current structure requires prefabricated wall edge component stirrup to stretch out one by one and stretches into vertical post-cast section as the horizontal connection reinforcing bar to satisfy current national design standard to the requirement of shear wall edge component stirrup along vertical interval, the interval that prefabricated wall stretches out the horizontal connection reinforcing bar is mostly 100 ~ 200mm, it is many to stretch out the reinforcing bar quantity, a large amount of trompils of side forms when leading to prefabricated wall production, the side forms is standardized, the universalization degree is low, unable used repeatedly, the reinforcing bar installation is responsible for. During transportation and field installation, it is many to stretch out the reinforcing bar, and the finished product protection is difficult, stretches out horizontal connection reinforcing bar and often is buckled repeatedly, influences its atress performance and structural safety, and leads to prefabricated wall hoist and mount difficulty, vertical post-cast section reinforcement degree of difficulty big, and the quality is difficult to control.
Disclosure of Invention
In order to overcome the defects of the existing adjacent prefabricated walls through the vertical post-pouring section connecting structure, the invention aims to provide a reinforcement distribution structure for distributing the reinforcing steel bars of the prefabricated walls and the post-pouring section. In the allowable range of the reinforcement structure of the shear wall according to the current national design specifications, the distance between the vertical steel bars of the adjacent edge components is properly enlarged, the vertical steel bars of the edge components of the prefabricated wall adjacent to the vertical post-pouring section are transferred into the vertical post-pouring section, the number of the vertical steel bar connecting joints of the edge components of the prefabricated wall can be reduced by about 30 percent, the number of the sleeve grouting connecting joints of the prefabricated wall is effectively reduced, and the cost of the prefabricated wall is reduced. Considering that the grouting construction quality of the existing prefabricated wall sleeve grouting connector is difficult to guarantee, the straight thread connector adopted by the vertical steel bars in the vertical post-pouring section is mature in technology and reliable in quality, the number of the vertical steel bars of the prefabricated wall edge component is reduced, the reliability of the connection of the vertical steel bars in the integral edge component can be effectively improved, and the structure safety is guaranteed. Stretch out the horizontally connect reinforcing bar based on the prefabricated wall only need satisfy shear force wall inclined cross section and receive the shear force bearing capacity check calculation can, stretch out the interval of horizontally connect reinforcing bar with the prefabricated wall and increase to 300mm, to stretch out horizontally connect reinforcing bar quantity with the prefabricated wall and reduce more than 30%, realize the side forms standardization, the universalization, reduce the prefabricated wall cost through side forms reuse, help the reinforcement of prefabricated wall in the simplification production simultaneously, be favorable to stretching out the finished product protection of horizontally connect reinforcing bar and improve prefabricated wall hoist and mount efficiency.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a structure of arrangement of reinforcement that prefabricated wall and post-cast section configuration edge member reinforcing bar are coordinated in lump, adjacent prefabricated wall 2 is connected as whole through vertical post-cast section 1 in the edge member position, pours post-cast concrete back vertical post-cast section 1 and prefabricated wall edge member region 21 and forms whole edge member, and the vertical reinforcing bar of configuration in whole edge member provides bending resistance for the shear force wall, and the stirrup restraint concrete in the whole edge member guarantees the elastoplasticity deformability of shear force wall.
The overall range of the vertical post-pouring section 1 and the prefabricated wall edge member area 21 is determined according to the range of the shear wall edge member suggested by the current design specifications, the geometric boundary limit of the vertical post-pouring section 1 and the prefabricated wall edge member area 21 is broken through, vertical steel bars and stirrups in the overall edge member are arranged comprehensively, and the structural functions of providing bending resistance and guaranteeing elastic-plastic deformation capacity of the shear wall by the overall edge member are guaranteed.
In the allowable range of the reinforcement structure of the shear wall, the distance between adjacent vertical steel bars in the whole edge component is enlarged, the distance between the vertical steel bars 24 of the edge component of the adjacent prefabricated wall, the distance between the vertical steel bars 11 of the edge component of the adjacent vertical post-pouring section and the distance between the vertical steel bars 24 of the edge component of the prefabricated wall and the vertical post-pouring section when the vertical steel bars 11 of the edge component of the prefabricated wall are adjacent are not more than 350mm, and when the distance is more than 300mm, the vertical construction steel bars 15 of the edge component are arranged on the vertical steel bars 24 of the edge component of the prefabricated wall and the vertical post-pouring.
Transferring vertical steel bars 24 of the prefabricated wall edge member, which are originally arranged in the prefabricated wall 2 and are close to the vertical post-pouring section 1, into the vertical post-pouring section 1 so as to reduce the number of the vertical steel bars 24 of the prefabricated wall edge member; the diameters of the vertical steel bars 24 of the edge member of the prefabricated wall and the vertical steel bars 11 of the edge member of the vertical post-cast section are not less than 12mm, the total reinforcement area of the vertical steel bars and the vertical post-cast section should meet the calculation requirement of the bending resistance bearing capacity of the shear wall, and the requirement of the current standard on the minimum reinforcement ratio of the vertical steel bars of the edge member needs to be met.
The vertical steel bars 24 of the upper and lower layers of prefabricated wall edge components are connected by joints suitable for connecting the vertical steel bars of the prefabricated wall, such as sleeve grouting joints, mechanical joints or constraint grout anchor joints, and the structures of the vertical steel bars 24 of the prefabricated wall edge components meet the corresponding joint connection requirements.
The diameter of the edge member vertical construction steel bar 15 is 8-10 mm, the upper layer and the lower layer are not connected, do not participate in stress calculation, and the edge member vertical construction steel bar 15 located in the prefabricated wall 2 does not extend out of the top surface and the bottom surface of the prefabricated wall 2.
In the prefabricated wall edge component area 21 and the vertical post-cast section 1, prefabricated wall edge component stirrups 26 and vertical post-cast section stirrups 12 which do not exceed the prefabricated wall edge component area 21 and the vertical post-cast section 1 are respectively arranged between the extending horizontal connecting reinforcements 25 of the adjacent prefabricated walls, and partition constraint is formed on concrete in the whole edge component.
The distance between the adjacent prefabricated walls and the horizontal connecting steel bars 25 extending out of the adjacent prefabricated walls is 300mm, the diameter of the adjacent prefabricated walls is not less than 8mm, and the reinforcement area of the adjacent prefabricated walls meets the requirement of checking calculation of shear bearing capacity of the inclined section of the shear wall; the limb distance of the hoops and the lacing wires in the integral edge component along the horizontal direction is not more than 300mm, and the distance along the vertical direction is not more than 200 mm.
The prefabricated wall edge component stirrup 26 and the vertical post-cast section stirrup 12 adopt welded closed hoops or ordinary 135-degree hook stirrups.
Compared with the prior art, the invention has the beneficial effects that:
(1) can reduce about 30% with prefabricated wall inner edge component vertical reinforcement quantity, effectively reduce its joint cost, reduce prefabricated shear wall and connect pre-buried and the processing of the reinforcing bar that corresponds, improve prefabricated wall production efficiency.
(2) Vertical reinforcing bars with a larger area proportion are arranged in the vertical post-pouring section and are connected by adopting straight threaded joints, so that the reliability of the connection of the vertical reinforcing bars in the integral edge component can be improved, and the safety of the integral structure is ensured.
(3) The number of the horizontal connecting reinforcing steel bars extending out of the prefabricated wall can be reduced by more than 30%, the number of the side forms for opening holes in the production process of the prefabricated wall can be greatly reduced, standardization and universalization of the side forms are facilitated, and the cost of the prefabricated wall is further reduced through recycling of the side forms. And the finished product protection of the horizontal connecting reinforcing steel bars can be favorably extended, and the hoisting efficiency of the prefabricated wall can be improved.
(4) Vertical reinforcing bar interval increase in the prefabricated wall, the pre-buried arrangement of equipment pipeline, line box etc. of being convenient for reduces mutual interference.
Drawings
Fig. 1 is a schematic structural view of the efficient reinforcement arrangement structure for arranging the edge member reinforcing steel bars on the overall prefabricated wall and the post-cast section when the efficient reinforcement arrangement structure is applied to the connection between the prefabricated edge member on the opening side and the vertical post-cast section, wherein the length a of the edge member area of one side wall limb where the prefabricated wall is located is 350-450 mm.
Fig. 2 is a schematic structural view of the comparative example of fig. 1, namely, the prior prefabricated edge member on the opening side and the vertical post-cast section are connected.
FIG. 3 is a schematic structural view of the prefabricated wall of the present invention applied to the connection between the prefabricated edge member at the opening side and the vertical post-cast section, wherein the length a of the edge member region of a side wall limb where the prefabricated wall is located is between 450mm and 650 mm.
FIG. 4 is a schematic structural view of the prefabricated wall of the present invention applied to the connection between the prefabricated edge member at the opening side and the vertical post-cast section, wherein the length a of the edge member region of a side wall limb where the prefabricated wall is located is between 650mm and 850 mm.
FIG. 5 is a schematic structural diagram of an improved structure of the present invention applied to connection between prefabricated edge members at the opening side and a vertical post-cast section, wherein vertical structural steel bars of the edge members are arranged in the edge member area of the prefabricated wall, and the length a of the edge member area of a side wall limb where the prefabricated wall is located is between 400mm and 500 mm.
Fig. 6 is a schematic view showing a structure of the conventional prefabricated edge member on the opening side in connection with the vertical post-cast section in the comparative example of fig. 5.
FIG. 7 is a schematic structural view of an improved structure of the present invention applied to a connection between a prefabricated edge member at a side of a tunnel opening and a vertical post-cast section, wherein the length a of the edge member region of a side wall limb where a prefabricated wall is located is between 500mm and 600 mm.
FIG. 8 is a schematic structural view of an improved structure of the prefabricated wall of the present invention applied to the connection between the prefabricated edge member at the opening side and the vertical post-cast section, wherein the length a of the edge member region of a side wall limb where the prefabricated wall is located is between 600mm and 800 mm.
FIG. 9 is a schematic structural view of the prefabricated wall of the present invention applied to the connection between the prefabricated edge members at the opening side and the vertical post-cast section, and when the prefabricated wall has a smaller edge member area, wherein the length a of the edge member area of a side wall limb where the prefabricated wall is located is between 400mm and 600 mm.
FIG. 10 is a schematic structural view of the prefabricated wall of the present invention applied to the connection between the prefabricated edge members at the opening side and the vertical post-cast section, and when the prefabricated wall has a smaller edge member area, wherein the length a of the edge member area of a side wall limb where the prefabricated wall is located is between 600mm and 800 mm.
FIG. 11 is a schematic structural diagram of the prefabricated wall edge component without the opening, which is applied to the connection between the vertical post-cast section and the horizontal connecting steel bars extending out along the direction parallel to the thickness direction of the wall body.
FIG. 12 is a schematic structural view of the prefabricated wall edge component without the opening, which is applied to the connection between the vertical post-cast section and the horizontal connecting steel bars extending out along the thickness direction of the vertical wall body.
FIG. 13 is a schematic structural view of the prefabricated wall of the present invention applied to the middle of the prefabricated wall, extending out of the horizontal connecting steel bars along the thickness direction of the vertical wall body, and connecting the vertical post-cast sections.
Fig. 14 is a schematic structural view of an L-shaped connecting node of a longitudinal prefabricated wall and a transverse prefabricated wall applied to a shear wall structure.
Fig. 15 is a front view a-a of fig. 14.
Fig. 16 is a front view B-B of fig. 14.
Fig. 17 is a schematic cross-sectional view of the L-shaped connection node of fig. 14 at the position 1-1 in fig. 15 and 17.
Fig. 18 is a structural schematic diagram of the L-shaped connecting node of the longitudinal prefabricated wall and the transverse prefabricated wall in the conventional shear wall structure in the comparative example of fig. 14.
Fig. 19 is a front view of C-C of fig. 18.
Fig. 20 is a front view, D-D, of fig. 18.
Fig. 21 is a schematic structural diagram of an improved L-shaped connecting node of a longitudinal prefabricated wall and a transverse prefabricated wall applied to a shear wall structure.
Fig. 22 is a front view E-E of fig. 21.
Fig. 23 is a front view F-F of fig. 21.
Fig. 24 is a schematic cross-sectional view of the L-shaped connection node of fig. 21 at the position 2-2 in fig. 22 and 23.
Fig. 25 is a schematic structural diagram of a longitudinal and transverse prefabricated wall T-shaped connection node applied to a shear wall structure.
Fig. 26 is a structural schematic diagram of a T-shaped connection node of the longitudinal prefabricated wall and the transverse prefabricated wall in the conventional shear wall structure in the comparative example of fig. 25.
Fig. 27 is a structural schematic view of a modified T-shaped connection node of the longitudinal and transverse prefabricated walls applied to a shear wall structure.
In the figure: 1-vertical post-pouring section; 2-prefabricating a wall; 3, prefabricating a first wall; 4-prefabricating a second wall; 5-prefabricating a third wall; 11-vertical post-cast section edge member vertical steel bars; 12-vertical post-cast section stirrups; 13-vertical post-cast section lacing wire; 14-additional connecting steel bars; 15-edge member vertical construction rebar; 21-prefabricated wall edge element area; 22-prefabricated wall opening area; 23-prefabricating a wall body area; 24-prefabricating vertical steel bars of wall edge components; 25-extending the horizontal connecting steel bars out of the prefabricated wall; 26-prefabricated wall edge member stirrups; 27-prefabricated wall edge member lacing wire; 28-connecting vertical steel bars to the wall body of the prefabricated wall; 29-the wall body of the prefabricated wall is not connected with vertical steel bars; 30-horizontally distributing steel bars on the prefabricated wall.
Detailed Description
The embodiments of the present invention will be described in detail below with reference to the drawings and examples.
Referring to fig. 1 to 27, the efficient reinforcement arrangement structure for arranging the edge member reinforcements of the prefabricated wall and the post-cast section is used for connecting the prefabricated wall 2 and the vertical post-cast section 1 at the position of the edge member of the shear wall, and the vertical post-cast section 1 and the prefabricated wall edge member area 21 form an integral edge member after post-cast concrete is poured. The invention optimizes and improves the structures of the vertical steel bars, the stirrups and the horizontal connecting steel bars extending out of the prefabricated wall of the integral edge component. The geometric boundary limit of the vertical post-pouring section 1 and the prefabricated wall edge member area 21 is broken through, vertical steel bars and stirrups in the whole edge member are arranged comprehensively, and the whole edge member is guaranteed to realize the structural functions of providing bending resistance and guaranteeing elastic-plastic deformation capacity of the shear wall.
Specifically, within the allowable range of the shear wall reinforcement structure in the current national design specification, the vertical steel bars 24 of the edge components of the adjacent prefabricated walls and the vertical steel bars 11 of the edge components of the vertical post-cast sections are increased to be not larger than 200mm and not larger than 350mm from about 150mm in the current structure, the arrangement of the vertical steel bars of the vertical post-cast sections 1 and the prefabricated wall edge component areas 21 is considered comprehensively, the vertical steel bars 24 of the edge components of the prefabricated walls, which are configured in the current structure and are adjacent to the vertical post-cast sections 1 in the prefabricated walls 2, are eliminated, the vertical steel bars 24 of the edge components of the prefabricated walls in the prefabricated wall edge component areas 21 are reduced, and the steel bar joint cost for connecting the vertical steel bars 24 of the edge components of the prefabricated walls on the upper layer and the lower.
In the invention, the vertical steel bars 24 of the edge members of the upper and lower layers of the prefabricated wall can be connected by adopting joints suitable for the connection of the vertical steel bars of the prefabricated wall, such as sleeve grouting joint, mechanical joint or constraint grout anchor joint, and the structure of the vertical steel bars 24 of the edge members of the prefabricated wall meets the corresponding joint connection requirements. The vertical steel bars 11 of the edge components at the vertical post-cast sections of the upper layer and the lower layer are preferably connected by adopting straight threaded joints, the joints are preferably arranged in the range from the upper part of the floor slab to the position below the second prefabricated wall extending out of the horizontal connecting steel bars 25, the joints can be arranged at the same height and can be staggered by a certain distance to avoid 100% connection in the same connecting section, so that the requirement on the performance of the joints is reduced; on the premise of reliable technology, other forms of steel bar joints or binding and overlapping can be adopted.
In the invention, the total reinforcement area of the vertical reinforcements 24 of the prefabricated wall edge component and the vertical reinforcements 11 of the edge component in the vertical post-pouring section in the integral edge component needs the calculation requirement of the bending resistance bearing capacity of the shear wall, and the requirement of the current specification on the minimum reinforcement rate of the vertical reinforcements of the edge component needs to be met. After the number of the vertical steel bars 24 of the edge member of the prefabricated wall is reduced, the area of the vertical steel bars reduced in the area 21 of the prefabricated edge member can be compensated by increasing the total area of the vertical steel bars 11 of the edge member in the vertical post-pouring section, so that the bending resistance of the shear wall is ensured.
In the invention, the total number of the vertical steel bars 24 of the prefabricated wall edge component and the vertical steel bars 11 of the edge component in the vertical post-pouring section in the integral edge component is reduced, and compared with the existing structure, the diameters of the vertical steel bars 24 of the prefabricated wall edge component and the vertical steel bars 11 of the edge component in the vertical post-pouring section are increased. The inside diameter of the steel bar grouting sleeve with the larger diameter and the absolute value of the anchoring length are both larger than the steel bar with the smaller diameter, and the grouting quality of the sleeve grouting connecting joint of the vertical steel bar 24 of the prefabricated wall edge member is easier to guarantee. After the diameter of the vertical steel bar 11 of the edge component in the vertical post-pouring section is increased, the vertical post-pouring section is more convenient to adopt a straight thread joint for connection, and compared with the binding lap joint adopted by the existing structure, the binding of the additional connecting steel bar 14 and the vertical post-pouring section stirrup 12 in the vertical post-pouring section is more convenient. Under the state of the prior art, the quality of the straight thread joint is more reliable than that of a sleeve grouting connecting joint, and vertical steel bars with more areas are distributed in the vertical post-pouring section 1 and are connected by the straight thread joint, so that the reliability of the connection of the vertical steel bars in the integral edge component is improved, and the safety of the integral structure is improved.
Particularly, when the distance between the vertical steel bars 24 of the edge members of the adjacent precast walls and the vertical steel bars 11 of the edge members in the vertical post-cast sections is more than 300mm, the vertical constructional steel bars 15 of the edge members can be arranged between the vertical constructional steel bars to ensure that the limb distance of the stirrups and the tie bars in the edge members along the horizontal direction is not more than 300 mm. The diameter of the vertical constructional steel bar 15 of edge member should be 8 ~ 10mm, and upper and lower layer is disconnected, and the vertical constructional steel bar 15 of edge member that is located prefabricated wall 2 does not stretch out prefabricated wall 2's top surface, bottom surface.
Furthermore, considering that the prefabricated wall extends out of the horizontal connecting steel bars 25 only needs to meet the requirement of checking the shear bearing capacity of the inclined section of the shear wall, in the allowed range of the horizontal distribution steel bar structure of the shear wall according to the current national design specification, the distance between the prefabricated wall and the horizontal connecting steel bars 25 is increased to 300mm from 100-200 mm of the current structure, so that the number of the prefabricated wall extending out of the horizontal connecting steel bars 25 is reduced by more than 30%, the side formwork standardization and the universalization are realized, and the production and construction difficulty is reduced. The diameter of the prefabricated wall extending out of the horizontal connecting steel bars 25 is not smaller than 8mm, and the reinforcement area of the prefabricated wall meets the requirement of the shear wall on the calculation of the shear bearing capacity of the inclined section. When the prefabricated wall stretches out the horizontal connecting reinforcing steel bars 25 and does not extend to the end part of the edge component, additional connecting reinforcing steel bars 14 are required to be arranged in the vertical post-pouring section 1 and are in lap joint with the prefabricated wall stretching out the horizontal connecting reinforcing steel bars 25, and the lap joint length of the additional connecting reinforcing steel bars and the prefabricated wall needs to meet the force transmission requirement.
After the distance between the prefabricated wall and the horizontal connecting steel bars 25 is increased to 300mm, the requirement of the existing national design specifications on the vertical distance between the stirrups of the edge components of the shear wall cannot be met only by extending the horizontal connecting steel bars 25 through the prefabricated wall. In the invention, prefabricated wall edge component areas 21, prefabricated wall edge component stirrups 26 of the vertical post-cast section 1 and vertical post-cast section stirrups 12 which do not exceed the prefabricated wall edge component areas 21 and the vertical post-cast section 1 are respectively arranged between the adjacent prefabricated walls extending out of the horizontal connecting reinforcements 25. Combine prefabricated wall to stretch out horizontal connection reinforcing bar 25, additional connecting reinforcement 14, stirrup, lacing wire in the whole marginal component are not more than 200mm and mostly are 150mm along vertical interval, and the limb distance along the horizontal direction is not more than 300mm, satisfies the structure requirement of current national design standard to shear wall marginal component stirrup, lacing wire. Concrete in the prefabricated wall edge member area and the vertical post-cast section can achieve the partition stirrup restraining effect equal to the existing structure, and the stirrup restraining concrete in the integral edge member can ensure the elastic-plastic deformation capacity of the shear wall.
In the invention, the prefabricated wall edge component stirrup 26 and the vertical post-pouring section stirrup 12 can adopt welded closed hoops or ordinary 135-degree hook stirrups.
FIG. 1 provides a connection structure applied to prefabricated edge components on the opening side and a vertical post-cast section, a prefabricated wall 2 is a prefabricated wall with an opening, all edge components on one side of a prefabricated wall opening area 22 are prefabricated wall edge component areas 21, the length a of each prefabricated wall edge component area 21 is 350-450 mm, the prefabricated wall extends out of a horizontal connecting steel bar 25 to the end portion of the vertical post-cast section 1 and is directly anchored in the vertical post-cast section 1, and no additional connecting steel bar 14 needs to be arranged. Fig. 2 shows a comparative example of fig. 1, namely a connection configuration of a conventional opening-side prefabricated edge member and a vertical post-cast section 1. Compared with the comparative example, the structure shown in fig. 1 increases the distance between the vertical steel bars 24 of the adjacent prefabricated edge members in the prefabricated wall edge member area 21 from about 150mm to about 200mm, eliminates the vertical steel bars 24 of the prefabricated wall edge members in the prefabricated wall edge member area 21, which are close to the vertical post-cast section 1, and reduces the number of the vertical steel bars 24 of the prefabricated wall edge members in the prefabricated wall edge member area 21 from 6 to 4, which is reduced by 33%; the quantity of the vertical steel bars 11 of the edge members of the vertical post-cast section is the same as that of the comparative example, the total area of the vertical steel bars 11 of the edge members of the vertical post-cast section and the diameter of the vertical steel bars 24 of the edge members of the prefabricated wall are kept consistent with that of the comparative example, or the requirement of the calculation of the bending resistance bearing capacity of the shear wall is met.
Fig. 3 and 4 provide structural indications when the length a of the edge member area 21 of the prefabricated wall of the invention shown in fig. 1 is 450-650 mm and 650-850 mm, 6 and 8 vertical steel bars 24 of the edge member of the prefabricated wall are respectively arranged in the edge member area 21 of the prefabricated wall, and the distance between the vertical steel bars 24 of the edge members of the adjacent prefabricated wall and the vertical steel bars 11 of the edge members of the vertical post-cast section is controlled not to be more than 210 mm.
As shown in FIG. 5, on the basis of FIG. 1, an improved connection structure of prefabricated edge members on the opening side and a vertical post-cast section is provided, the prefabricated wall 2 is provided with an opening, the edge members on one side of an opening area 22 of the prefabricated wall are all prefabricated wall edge member areas 21, and the length a of the prefabricated wall edge member areas is 400-500 mm. Fig. 6 shows a comparative example of fig. 5, i.e., a connection configuration of the existing opening-side prefabricated edge member with the vertical post-cast section. Compared with the comparative example, the structure shown in fig. 5 increases the distance between the vertical steel bars 24 of the adjacent prefabricated wall edge members, the distance between the vertical steel bars 11 of the adjacent vertical post-cast section edge members and the distance between the vertical steel bars 24 of the prefabricated wall edge members and the vertical post-cast section edge members 11 when the prefabricated wall edge members and the vertical post-cast section edge members are adjacent to each other to be not more than 350mm, and does not set the edge member vertical construction steel bars 15 between the adjacent steel bars when the distance between the vertical steel bars 24 of the adjacent prefabricated wall edge members and the vertical post-cast section edge members 11 is not more than; when the interval is greater than 300mm, set up edge member vertical structure reinforcing bar 15 between adjacent reinforcing bar, edge member vertical structure reinforcing bar 15's diameter should be 8 ~ 10mm, and upper and lower layer is disconnected, does not participate in the atress calculation, and edge member vertical structure reinforcing bar 15 that is located prefabricated wall 2 does not stretch out prefabricated wall 2's top surface, bottom surface. Compared with the comparative example, the number of vertical steel bars 24 of the edge member of the prefabricated wall with the structure shown in fig. 5 is reduced from 8 to 4, the number of vertical steel bars 11 of the edge member of the vertical post-pouring section is the same as that of the comparative example, the total area of the vertical post-pouring section is kept consistent with that of the comparative example by increasing the diameters of the vertical steel bars 11 of the edge member of the vertical post-pouring section and the vertical steel bars 24 of the edge member of the prefabricated wall, or the requirement of the calculation of the bending resistance and the.
Fig. 7 and 8 provide structural illustrations when the length a of the edge member area 21 of the prefabricated wall of the invention shown in fig. 5 is 500-600 mm and 600-800 mm, and 4 and 6 vertical steel bars 24 of the edge member of the prefabricated wall are respectively arranged in the edge member area 21 of the prefabricated wall.
FIG. 9 provides another connection structure of prefabricated wall edge members and vertical post-cast sections, wherein the length a of a side wall limb hole side edge member area where the prefabricated wall 2 is located is 400-600 mm, the prefabricated wall 2 is not completely prefabricated, and the side wall limb hole side edge member area where the prefabricated wall 2 is located is formed by combining the prefabricated wall edge member area 21 and a part of the vertical post-cast section 1. The length of the prefabricated wall edge component area 21 of the prefabricated wall 2 is smaller and is about 350-400 mm, two rows of 4 prefabricated wall edge component vertical steel bars 24 are arranged on one side of the prefabricated wall edge component area 21 close to the prefabricated wall opening area 22, and the distance between the prefabricated wall edge component vertical steel bars is controlled to be not more than 200 mm. The prefabricated wall extends out of the horizontal connecting steel bars 25 to the end part of the vertical post-pouring section 1 and is directly anchored in the vertical post-pouring section 1 without laying additional connecting steel bars 14.
Further, when length a of a side edge component region of a side wall limb opening where the prefabricated wall 2 is located in fig. 9 is increased to 600-800 mm, the length of the prefabricated wall extending out of the horizontal connecting steel bars 25 is long when the prefabricated wall directly extends to the end of the vertical post-pouring section 1, and therefore the prefabricated wall is inconvenient to process and transport, the prefabricated wall extending out of the horizontal connecting steel bars 25 can extend into the vertical post-pouring section 1 for a certain length according to fig. 10, the additional connecting steel bars 14 are arranged in the vertical post-pouring section 1 and are in lap joint with the prefabricated wall extending out of the horizontal connecting steel bars 25 to transfer force, and the lap joint length of the two should meet the force transfer requirement. And 4 vertical post-cast section edge member vertical steel bars 11 are configured in the overlapping area of the additional connecting steel bars 14 and the prefabricated wall extending out of the horizontal connecting steel bars 25, and the arrangement of the steel bars can be adjusted according to the actual length of a, so that the distance between the adjacent prefabricated wall edge member vertical steel bars 24 and the vertical post-cast section edge member vertical steel bars 11 is uniform and is not suitable to be larger than 200 mm.
Fig. 11 provides a connection structure of the prefabricated wall 2 without the opening and the vertical post-cast section 1, wherein the side surface of the prefabricated wall 2 extends out of the prefabricated wall along the direction parallel to the thickness direction of the prefabricated wall and extends out of the horizontal connecting steel bars 25, extends to the end part of the vertical post-cast section 1 and is directly anchored in the vertical post-cast section 1, and additional connecting steel bars 14 are not required to be arranged. The prefabricated wall body connecting vertical reinforcing steel bars 28 and the prefabricated wall body non-connecting vertical reinforcing steel bars 29 are arranged in a prefabricated wall body area 23 of the prefabricated wall 2, one row of 2 prefabricated wall edge member vertical reinforcing steel bars 24 are arranged on one side, close to the prefabricated wall body area 23, of a prefabricated wall edge member area 21, the edge member vertical construction reinforcing steel bars 15 are arranged on one side, close to a vertical post-pouring section 1, namely the prefabricated wall edge member vertical reinforcing steel bars 24 are reduced to 2 vertical post-pouring section vertical reinforcing steel bars shown in figure 11 from 4 vertical post-pouring section vertical reinforcing steel bars in the existing structure, and the function of providing bending resistance is achieved by increasing the vertical post-pouring section edge member vertical reinforcing steel bars 11 close to the prefabricated wall edge member.
Fig. 12 provides another connection structure of the invention applied to the prefabricated wall 2 without the opening and the vertical post-cast section 1, the prefabricated wall 2 extends out of the prefabricated wall along the direction vertical to the thickness direction thereof, extends out of the horizontal connecting steel bars 25, extends into the vertical post-cast section 1 and is in lap joint with the additional connecting steel bars 14, and the lap joint length of the prefabricated wall and the additional connecting steel bars meets the force transmission requirement. The vertical reinforcing steel bars 24 of the edge members of the prefabricated wall adjacent to the vertical post-cast section 1 in the existing structure are replaced by the vertical reinforcing steel bars 15 of the edge members, namely the vertical reinforcing steel bars 24 of the edge members of the prefabricated wall are reduced from 6 in the existing structure to 4 shown in figure 11, and the vertical post-cast section edge member vertical reinforcing steel bars 11 adjacent to the edge member area 21 of the prefabricated wall are increased to achieve the effect of providing bending resistance. Regional 23 structures of prefabricated wall are with current plum blossom shape structure, and prefabricated wall is connected vertical reinforcing bar 28 and is adopted the articulate such as sleeve grout, and prefabricated wall does not connect vertical reinforcing bar 29 and does not stretch out prefabricated wall bottom surface, top surface.
Fig. 13 provides a connection structure of the invention applied to the middle of the prefabricated wall 2 and the vertical post-cast section 1, wherein the prefabricated wall 2 extends out of the prefabricated wall along the direction vertical to the thickness direction of the prefabricated wall, extends out of the horizontal connecting steel bars 25, extends into the vertical post-cast section 1 and is in lap joint with the additional connecting steel bars 14, and the lap joint length of the prefabricated wall and the additional connecting steel bars meets the force transmission requirement. The vertical reinforcing steel bars 24 of the prefabricated wall edge members adjacent to the vertical post-cast section 1 in the existing structure are replaced by the vertical reinforcing steel bars 15 of the edge members, namely the vertical reinforcing steel bars 24 of the prefabricated wall edge members are reduced from 4 in the existing structure to 2 in the figure 13, and the vertical post-cast section edge member vertical reinforcing steel bars 11 adjacent to the edge member area 21 of the prefabricated wall are increased to achieve the effect of providing bending resistance.
Fig. 14 to 17 provide an embodiment of the present invention applied to an L-shaped connection node of a longitudinal and transverse prefabricated wall, where the prefabricated wall i 3 is a prefabricated wall with an opening, the prefabricated wall ii 4 is not provided with an opening, the edge member area of a side wall limb of the prefabricated wall ii 4 is located completely in the vertical post-pouring section, and the prefabricated wall ii 4 does not include the edge member area 21 of the prefabricated wall. Fig. 18 to 20 show the construction of L-shaped connecting nodes of longitudinal and transverse prefabricated walls in a conventional shear wall structure, namely, a comparative example of the embodiment of the invention shown in fig. 14 to 17. In the embodiment of the invention shown in fig. 14 to 17, the vertical reinforcing steel bars 24 of the edge member of the prefabricated wall adjacent to the vertical post-cast section 1 in the edge member area 21 of the prefabricated wall 3 in the comparative example and the vertical post-cast section edge member vertical reinforcing steel bars 11 of the end part of the prefabricated wall extending out of the horizontal connecting reinforcing steel bars 25 are replaced by the vertical construction reinforcing steel bars 15 of the edge member with the unconnected upper and lower layers, and the distance between the vertical reinforcing steel bars 24 of the edge member of the adjacent prefabricated wall and the vertical reinforcing steel bars 11 of the edge member of the vertical post-cast section is controlled to be not. According to the prefabricated wall edge member vertical reinforcing steel bars 24 and the vertical post-cast section edge member vertical reinforcing steel bars 11 in the embodiment, 6 and 12 vertical reinforcing steel bars in the comparative example are respectively reduced to 4 and 8 vertical reinforcing steel bars, the total reinforcing steel bar area of the prefabricated wall edge member vertical reinforcing steel bars and the vertical post-cast section edge member vertical reinforcing steel bars is ensured to meet the requirement of the shear wall bending resistance bearing capacity check calculation by increasing the diameters of the prefabricated wall edge member vertical reinforcing steel bars and the vertical post-cast section edge member vertical reinforcing steel bars. The prefabricated wall extending out of the horizontal connecting steel bars 25 can be extended out of the side surface of the prefabricated wall by the prefabricated wall horizontal distribution steel bars 30.
Further, in the embodiment of the present invention shown in fig. 14 to 17, the distance between the horizontal connecting reinforcing bars 25 extending from the prefabricated wall of the first prefabricated wall 3 and the second prefabricated wall 4 is increased from 200mm in the comparative example to 300mm, so as to reduce the number of the horizontal connecting reinforcing bars 25 extending from the prefabricated wall, thereby realizing standardization and universalization of the side forms during the production of the prefabricated wall, and reducing the difficulty in production and construction. The diameter of the prefabricated wall extending out of the horizontal connecting steel bar 25 is not smaller than 8mm, and the reinforcement area of the prefabricated wall meets the requirement of the shear wall on the calculation of the shear bearing capacity of the inclined section. And the prefabricated wall of the first prefabricated wall 3 extends out of the horizontal connecting steel bars 25 to the end part of the vertical post-pouring section 1 and is directly anchored in the vertical post-pouring section 1 without laying additional connecting steel bars 14. And the horizontal connecting steel bars 25 extending out of the prefabricated wall of the second prefabricated wall 4 extend into the vertical post-pouring section 1 to be in lap joint with the additional connecting steel bars 14, and the lap joint length of the prefabricated wall and the additional connecting steel bars meets the force transmission requirement. The prefabricated wall stretches out of the horizontal connecting steel bars 25 and the additional connecting steel bars 14 to be used as stirrups in the first prefabricated wall 3 and the vertical post-cast section 1, prefabricated wall edge component pull bars 27 and vertical post-cast section pull bars 13 are arranged at the corresponding vertical steel bar positions, and the limb distance of the stirrups and the pull bars in the integral edge component along the horizontal direction is controlled to be not more than 300 mm.
Particularly, after the distance between the prefabricated wall and the horizontal connecting steel bars 25 is increased to 300mm, the requirement of the existing national design specifications on the vertical distance between the shear wall edge member stirrups can not be met only by extending the horizontal connecting steel bars 25 through the prefabricated wall. As shown in fig. 15 to 17, in the concrete embodiment, in the prefabricated wall edge member area 21 and the vertical post-cast section 1 of the prefabricated wall i 3, the prefabricated wall edge member stirrups 26 and the vertical post-cast section stirrups 12 which do not exceed the prefabricated wall edge member area 21 and the vertical post-cast section 1 are respectively arranged between the adjacent prefabricated wall extending horizontal connecting steel bars 25, so as to form the partitioned stirrup restraining effect on the concrete in the prefabricated wall edge member area 21 and the vertical post-cast section 1. And (3) controlling the limb distance of the stirrups and the tie bars in the integral edge component along the horizontal direction to be not more than 300mm by combining and arranging the tie bars 27 of the prefabricated wall edge component and the tie bars 13 of the vertical post-pouring section.
The horizontal connecting steel bars 25 and the additional connecting steel bars 14 extend out of the prefabricated wall, the vertical distance between the stirrups and the tie bars in the integral edge member in the specific embodiment is 150mm and is smaller than 200mm in the comparative example, and the structural requirements of the existing national design specifications on the stirrups and the tie bars of the edge member of the shear wall are met. The hooping restraining effect of the concrete in the integral edge member in the specific embodiment is superior to that of the comparative example, the elastic-plastic deformation capacity of the shear wall can be guaranteed, the binding amount of the hooping in the vertical post-pouring section is less, and the field construction is more efficient.
Fig. 21-24 show a modification of the embodiment of the invention shown in fig. 14-17, in which the edge member region of a side wall limb where the prefabricated wall two 4 is located is prefabricated, i.e. the prefabricated wall edge member region 21 is provided at the end of the prefabricated wall two 4. Referring to fig. 11, the side surfaces of the second prefabricated wall 4 extend out of the prefabricated wall along the direction parallel to the thickness direction of the prefabricated wall and extend out of the horizontal connecting steel bars 25, extend to the end part of the vertical post-pouring section 1 and are directly anchored in the vertical post-pouring section 1, and no additional connecting steel bars 14 need to be laid. And arranging a row of 2 vertical reinforcing steel bars 24 of the edge member of the prefabricated wall on the side, close to the wall body area 23, of the edge member area 21 of the prefabricated wall II 4, arranging the vertical construction reinforcing steel bars 15 of the edge member on the side close to the vertical post-pouring section 1, and increasing the vertical post-pouring section edge member vertical reinforcing steel bars 11 close to the edge member area 21 of the prefabricated wall to realize the effect of providing bending resistance. Compared with the specific embodiment shown in fig. 14 to 17, the range of the improved vertical post-cast section 1 shown in fig. 21 to 24 is obviously reduced, the shape is simpler, a template of the vertical post-cast section 1 is convenient to support on site, and the site construction is more efficient. The improved generation contains 6 prefabricated wall edge component vertical reinforcing bars 24, 6 post-cast section inward flange component vertical reinforcing bars 11, compares 4 prefabricated wall edge component vertical reinforcing bars 24, 8 post-cast section inward flange component vertical reinforcing bars 11 of embodiment, and whole vertical reinforcing bar radical and joint quantity are unchangeable.
Fig. 25 provides an embodiment of the present invention applied to a T-shaped connection node of a longitudinal and transverse prefabricated wall, where the prefabricated walls one 3 and three 5 are prefabricated walls with openings, the prefabricated walls two 4 do not have openings, the edge member areas of the side limbs where the prefabricated walls two 4 are located are all located in the vertical post-pouring section, and the prefabricated walls two 4 do not include the prefabricated wall edge member areas 21. Fig. 26 is a structure of an L-shaped connecting node of a longitudinal prefabricated wall and a transverse prefabricated wall in a conventional shear wall structure, namely a comparative example of the embodiment of the invention shown in fig. 25. In the embodiment of the invention shown in fig. 25, the vertical reinforcing steel bars 24 of the edge members of the prefabricated wall adjacent to the vertical post-cast section 1 in the edge member area 21 of the prefabricated wall I3 and the prefabricated wall II 5 in the comparative example and the vertical post-cast section edge member vertical reinforcing steel bars 11 at the end parts of the prefabricated wall II 4 extending out of the horizontal connecting reinforcing steel bars 25 are replaced by the vertical construction reinforcing steel bars 15 of the edge members which are not connected in the upper and lower layers, and the distance between the vertical reinforcing steel bars 24 of the edge members of the adjacent prefabricated wall and the vertical post-cast section edge member vertical reinforcing steel bars 11 is controlled to. According to the prefabricated wall edge member vertical reinforcing steel bars 24 and the vertical post-cast section edge member vertical reinforcing steel bars 11 in the embodiment, the number of the vertical reinforcing steel bars is respectively reduced from 12 to 16 to 8 to 14 in the comparative example, the diameter of the vertical reinforcing steel bars is increased, so that the total reinforcing steel bar area of the vertical reinforcing steel bars and the vertical post-cast section edge member vertical reinforcing steel bars meets the requirement of the shear wall bending resistance bearing capacity check calculation, and the requirement of the current specification on the minimum reinforcing steel bar rate of the edge member vertical reinforcing.
Fig. 27 shows a modification of the embodiment of the invention shown in fig. 25, in which the edge member region of a side wall limb where the prefabricated wall two 4 is located is prefabricated, that is, the prefabricated wall edge member region 21 is provided at the end of the prefabricated wall two 4, and the construction is the same as that shown in fig. 11. Compared with the specific embodiment shown in fig. 25, the range of the improved vertical post-cast section 1 shown in fig. 27 is obviously reduced, the shape is simpler, a template of the vertical post-cast section 1 can be conveniently erected on site, and the site construction is more efficient. The improved generation contains 10 prefabricated wall edge component vertical reinforcing bars 24, 12 post-cast section inward flange component vertical reinforcing bars 11, compares 8 prefabricated wall edge component vertical reinforcing bars 24, 14 post-cast section inward flange component vertical reinforcing bars 11 of embodiment, and whole vertical reinforcing bar radical and joint quantity are unchangeable.
In summary, based on the integral edge member formed by the vertical post-cast section and the prefabricated wall edge member, the vertical steel bars and the stirrups in the integral edge member are configured comprehensively, the distance between the vertical steel bars of the prefabricated wall edge member is properly enlarged within the allowable range of the reinforcement configuration of the shear wall, the vertical steel bars of the prefabricated wall edge member adjacent to the vertical post-cast section are transferred into the vertical post-cast section, meanwhile, the distance between the side surfaces of the prefabricated wall and the horizontal connecting steel bars extending out is increased, and the stirrups are configured on the vertical post-cast section and the prefabricated wall edge member respectively to form partition restraint on concrete in the integral edge member. The invention can reduce the number of the vertical steel bar connections of the edge component of the prefabricated wall and the number of the horizontal connecting steel bars extending out of the side surface by more than 30 percent, reduce the cost of the prefabricated wall and the processing and installation difficulty, and improve the reliability of the vertical steel bar connection in the integral edge component.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes and substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a structure of arrangement of reinforcement that prefabricated wall and post-cast section configuration edge member reinforcing bar are planned entirely, its characterized in that, adjacent prefabricated wall (2) are connected as whole through vertical post-cast section (1) in the edge member position, pour vertical post-cast section (1) behind the concrete and form whole edge member with prefabricated wall edge member region (21), the vertical reinforcing bar of disposition in whole edge member provides bending resistance for the shear force wall, stirrup restraint concrete in the whole edge member guarantees the elastoplasticity deformability of shear force wall.
2. The reinforcement structure for collocating the edge member steel bars for the precast wall and the post-cast section as claimed in claim 1 is characterized in that the overall range of the vertical post-cast section (1) and the edge member area (21) of the precast wall is determined according to the shear wall edge member range suggested by the current design specifications, the geometric boundary limit of the vertical post-cast section (1) and the edge member area (21) of the precast wall is broken through, the vertical steel bars and the stirrups in the integral edge member are collocatedly collocated, and the integral edge member is guaranteed to realize the structural function of providing the bending resistance and guaranteeing the elastic-plastic deformation capability of the shear wall.
3. The overall arrangement of the reinforcement structure of the prefabricated wall and the post-cast section configured with the edge member steel bars according to claim 1, wherein the distance between the adjacent vertical steel bars in the integral edge member is enlarged within the allowable range of the reinforcement structure of the shear wall, the distance between the adjacent vertical steel bars (24) of the prefabricated wall edge member, the distance between the adjacent vertical post-cast section edge member vertical steel bars (11), and the distance between the prefabricated wall edge member vertical steel bars (24) and the vertical post-cast section edge member vertical steel bars (11) when adjacent are not more than 350mm, and the edge member vertical construction steel bars (15) are arranged on the prefabricated wall edge member vertical steel bars (24) and the vertical post-cast section edge member vertical steel bars (11) when the distance is more than 300 mm.
4. The arrangement of the reinforcing steel bars of the edge members for the overall precast wall and the post-cast section according to claim 3, wherein the vertical reinforcing steel bars (24) of the edge members of the precast wall, which are arranged in the precast wall (2) and are adjacent to the vertical post-cast section (1), are transferred into the vertical post-cast section (1) to reduce the number of the vertical reinforcing steel bars (24) of the edge members of the precast wall; the diameters of the vertical steel bars (24) of the prefabricated wall edge component and the vertical steel bars (11) of the vertical post-cast section edge component are not less than 12mm, the total reinforcement area of the prefabricated wall edge component and the vertical post-cast section edge component should meet the calculation requirement of the bending resistance bearing capacity of the shear wall, and the requirement of the current specification on the minimum reinforcement ratio of the vertical steel bars of the edge component needs to be met.
5. The reinforcement structure for arranging the edge member steel bars on the overall precast wall and the post-cast section according to claim 3, wherein the vertical steel bars (24) of the edge member of the upper and lower precast walls are connected by joints suitable for the connection of the vertical steel bars of the precast wall, such as sleeve grouting joints, mechanical joints or constraint slurry anchor joints, and the structure of the vertical steel bars (24) of the edge member of the precast wall meets the corresponding joint connection requirements.
6. The arrangement of reinforcement structures for arranging edge member steel bars on a prefabricated wall and a post-cast section in a lump as claimed in claim 3, wherein vertical steel bars (11) of the edge member of the upper and lower vertical post-cast sections are connected by straight threaded joints, the joints are arranged above a floor slab to a range below a horizontal connecting steel bar (25) of a second prefabricated wall, and the joints are arranged at the same height or staggered by a certain distance to avoid 100% connection in the same connecting section, so as to reduce the requirement on the performance of the joints.
7. The overall precast wall and post-cast section reinforcement configuration structure for the edge member steel bars according to claim 3, characterized in that the diameter of the edge member vertical configuration steel bars (15) is 8-10 mm, the upper and lower layers are not connected and do not participate in stress calculation, and the edge member vertical configuration steel bars (15) in the precast wall (2) do not extend out of the top surface and the bottom surface of the precast wall (2).
8. The reinforcement structure for arranging the edge member steel bars on the overall precast wall and the post-cast section according to claim 1, characterized in that in the precast wall edge member area (21) and the vertical post-cast section (1), precast wall edge member stirrups (26) and vertical post-cast section stirrups (12) which do not exceed the precast wall edge member area (21) and the vertical post-cast section (1) are respectively arranged between the extending horizontal connecting steel bars (25) of the adjacent precast walls, so that the concrete in the integral edge member is restrained in a partitioned manner.
9. The reinforcement structure for arranging the edge member steel bars on the overall precast wall and the post-cast section according to claim 8, wherein the distance between the adjacent precast walls extending out of the horizontal connecting steel bars (25) is 300mm, the diameter of the adjacent precast walls is not less than 8mm, and the reinforcement area meets the requirement of the shear wall on the calculation of the shear bearing capacity of the inclined section; the limb distance of the hoops and the lacing wires in the integral edge component along the horizontal direction is not more than 300mm, and the distance along the vertical direction is not more than 200 mm.
10. The arrangement of reinforcement for arranging the edge member steel bars of the overall precast wall and the post-cast section according to claim 8, wherein the precast wall edge member stirrups (26) and the vertical post-cast section stirrups (12) adopt welded closed hoops or ordinary 135-degree hook stirrups.
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| CN202010537549.XA CN111691578A (en) | 2020-06-12 | 2020-06-12 | Reinforcing bar structure for integrally arranging edge member reinforcing bars on prefabricated wall and post-cast section |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112376801A (en) * | 2020-12-04 | 2021-02-19 | 中国建筑标准设计研究院有限公司 | Coincide shear wall edge member of high-efficient configuration vertical reinforcement |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112376801A (en) * | 2020-12-04 | 2021-02-19 | 中国建筑标准设计研究院有限公司 | Coincide shear wall edge member of high-efficient configuration vertical reinforcement |
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