CN105544801A - Bolted connection technique for prefabricated large plate shear wall provided with concealed bracing and construction method - Google Patents
Bolted connection technique for prefabricated large plate shear wall provided with concealed bracing and construction method Download PDFInfo
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- CN105544801A CN105544801A CN201610059115.7A CN201610059115A CN105544801A CN 105544801 A CN105544801 A CN 105544801A CN 201610059115 A CN201610059115 A CN 201610059115A CN 105544801 A CN105544801 A CN 105544801A
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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
- E04B2/64—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of concrete
- E04B2/68—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of concrete made by filling-up wall cavities
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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
- E04B2103/00—Material constitution of slabs, sheets or the like
- E04B2103/02—Material constitution of slabs, sheets or the like of ceramics, concrete or other stone-like material
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Abstract
The invention discloses a bolted connection technique for a prefabricated large plate shear wall provided with a concealed bracing. The shear wall comprises an upper prefabricated concrete large plate provided with concealed bracing bars, a lower prefabricated concrete large plate provided with concealed bracing bars and cast-in-place concrete. Each prefabricated concrete large plate provided with concealed bracing bars comprises a preserved rabbet, two-corner notches, a protruding notch, a steel wire gauze sheet, distributing bars, embedded column longitudinal bars and stirrups, a square steel tube, an X-shaped steel inclined strut, an inner connecting steel plate and an outer connecting steel plate, wherein the vertical distribution bars are arranged on the two-corner notch at the lower end, the steel wire gauze sheet, the outer connecting steel plate, the inner connecting steel plate provided with tapping threaded holes, and the vertical distribution bars are arranged in the area of the protruding notch, the two-corner notches are indirectly connected in a lapping mode through the upper layer and lower layer of vertical bars, the middle protruding notch is inserted into the preserved rabbet in the top end of the lower layer of the shear wall through the upper layer of the shear wall, and then the inner connecting steel plate is connected with the outer connecting steep plate through a high-strength bolt by taking the inner connecting steel plate as a nut. Vertical connection integrity is high, construction is easier and more convenient, bearing capacity is greatly improved, and a remarkable strong node and weak component effect can be generated by the structure.
Description
Technical field
The invention belongs to prefabricated building structure field, relate to pre-fabricated building structure, relate generally to prefabricated large plate shear wall structure system, particularly the bolt connection node technology of the large plate shear wall of a kind of prefabricated assembled band concealed bracings and construction method.
Background technology
Current prefabricated assembled concrete structure mainly adopts prefabricated or semi-precast beam post, floor and wallboard, assembled by site operation, build part concrete, forms main force structure.This structural system has the feature of modularized production, mechanized construction, and build guality is high, and speed of application is fast, can saving resource effectively, and protection of the environment, is conducive to the sustainable development promoting society.Current Domestic research mainly concentrates on pre-fabricated one field, and the research of prefabricated assembled Seismic Property of Shear Wall Structures aspect is comparatively rare; Ensure that the key of prefabricated assembled Seismic Property of Shear Wall Structures is mainly reflected in the aspects such as the design of Joint's connection fabrication measure; The connected mode of the prefabricated assembled shear wall structure of tradition mainly contains: reinforcing bar is connected with steel plate high-strength bolt, straight screw sleeve connection (containing shear connector), angle steel solder design, locally unbonded reinforcement sleeve connection, reinforcing bar are connected with steel pipe bolt and prestressing force connection etc.; Existing experimental study shows, under these connected modes, the anti-seismic performance of fabricated shear wall is all relatively better, but eventually or indirectly connects, and integral cast-in-situ formula shear wall structure compares, and still shows node and connects the shortcomings such as weak.
Along with the increase of structure height, the thickness of traditional prefabricated assembled shear wall also can increase, and causes this kind of prefabricated assembled shear wall deadweight to increase, is unfavorable for transport and lifting, also comparatively unfavorable to the ductility improved under the supporting capacity of structure and geological process; Further, traditional prefabricated assembled shear wall structure does not establish sleeper, side column, and anti-vibration defense lines is single.
During traditional prefabricated assembled large plate shear wall upper and lower wall sheet bolt connects, generally adopt common high-strength bolt, be connected the steel plate connector of upper and lower two panels shear wall with nut with screw rod, connector quantity is more, construction method is comparatively loaded down with trivial details, is unfavorable for large-scale promotion application.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, propose the bolt link technique of the large plate shear wall structure of a kind of prefabricated assembled band concealed bracings; The bolt link technique of this kind of large plate shear wall is by the large plate of upper and lower prefabricated band concealed bracings steel concrete, and assembled rear cast-in-place necessary concrete forms at the scene; This kind of large plate of prefabricated band concealed bracings steel concrete is reserved junction steel plate, the outer junction steel plate of epimere welded bands connecting screw hole, high-strength bolt, sleeper in convex breach in the middle part of notch, two jiaos, lower end breach, lower end, horizontal distribution reinforcing bar, vertical distribution reinforcement, lower end welded bands tapping screw by prefabricated reinforced concrete wall panel, top and is indulged muscle, sleeper stirrup, sleeper square steel pipe, X-shaped steel plate diagonal brace and steel fabric sheet and form; This kind of large plate of prefabricated band concealed bracings steel concrete is containing sleeper, and sleeper core is containing square steel pipe, and in square steel pipe and wallboard, X-shaped steel plate diagonal brace is welded to connect, and square steel pipe and X-shaped steel plate diagonal brace form steel frame, and steel mesh reinforcement and concrete jointly stressed; Obviously, this kind of steel frame can improve the supporting capacity of prefabricated assembled large plate shear wall, the thickness of thinning this prefabricated units, thus can be applied in high-level structure and effectively alleviate dead load, meanwhile, this kind of steel frame be arranged so that originally only have the prefabricated assembled large plate shear wall of single anti-vibration defense lines to have multiple seismic-proof; And, two jiaos, lower end breach and convex breach and top notch are set in shear wall, in convex breach, steel fabric sheet is set, nut is considered as by containing junction steel plate in tapping screw, high-strength bolt is adopted to connect interior junction steel plate and outer junction steel plate, this structure effectively can ensure the globality of upper and lower prefabricated assembled large plate shear wall connected node, ensures reliably to connect; Visible, this kind of large plate shear wall node of prefabricated assembled band concealed bracings connects reliable, and the weak component effect of desirable strong node can occur under geological process.
The present invention is achieved through the following technical solutions:
A bolt link technique for the large plate shear wall of prefabricated assembled band concealed bracings, comprises the large plate of steel concrete arranging band concealed bracings, and cast-in-place ordinary concrete;
The large plate of steel concrete of described band concealed bracings, large plate has been prefabricated in the factory;
The large plate of steel concrete of described band concealed bracings, the X-shaped steel plate diagonal brace of the built-in band shearing resistance nail of large plate;
The large plate of steel concrete of described band concealed bracings, sleeper is established on large plate both sides, and sleeper core establishes square steel pipe;
The large plate of steel concrete of described band concealed bracings, reserved notch is established on large plate top, the outer junction steel plate of welding in the middle part of reserved vertical distribution bar, vertical reinforcement, and connecting screw hole is established at outer junction steel plate center, preset level distribution reinforcement, horizontal distribution reinforcing bar welds with outer junction steel plate;
The large plate of steel concrete of described band concealed bracings, two jiaos of breach are established in large plate lower end, reserved horizontal distribution reinforcing bar and vertical distribution reinforcement;
The top of described square steel pipe is connected to stiffening rib at internal welding, and stiffening rib stretches out the prefabricated large board wall body of lower floor and stretches into the prefabricated large board wall body certain distance in upper strata;
The large plate of steel concrete of described upper and lower two-layer band concealed bracings, in its X-shaped steel plate diagonal brace and sleeper, square steel pipe adopts the welding of L angle steel;
The large plate of steel concrete of described band concealed bracings, reserve convex breach in lower end central region, convex indentation, there reserves vertical distribution reinforcement, junction steel plate in vertical distribution reinforcement welding, tapping screw is established at interior junction steel plate center, at the inner pre-buried steel silk netting of wallboard convex breach;
Described prefabricated assembled band concealed bracings large board wall body two jiaos in lower end upper and lower two-layer vertical distribution reinforcements of indentation, there overlap indirectly;
The large board wall body of described prefabricated assembled band concealed bracings convex gap regions in the middle part of lower end inserts notch location, lower floor's shear wall top by upper strata shear wall, nut is considered as by containing junction steel plate in tapping screw, adopt high-strength bolt to tighten through the connecting screw hole of outer junction steel plate and the tapping screw of interior junction steel plate, junction steel plate in upper strata is connected with junction steel plate outside lower floor;
In lower end, two jiaos of breach and middle part convex gap regions are all filled with ordinary concrete to the large board wall body of described prefabricated assembled band concealed bracings, form an entirety.
As preferably, described fill concrete adopts microdilatancy type self-flowing dense concrete, and this kind of concrete can improve new-old concrete interface switching performance.
As preferably, the steel concrete large plate both sides sleeper core of described band concealed bracings establishes H profile steel or round steel pipe.
A construction method for above-mentioned prefabricated band concealed bracings large plate shear wall bolt link technique, comprises the following steps:
The first step: will to be prefabricated in the factory and the prefabricated band concealed bracings assembled large panel shear wall reaching design strength transports to in-site installation location and temporary fixed, by prefabricated assembled for upper strata band concealed bracings large plate shear wall hoisted in position, the top embedding lower floor's precast shear wall is reserved in notch, the stiffening rib of lower floor's shear wall is inserted in the square steel pipe of upper strata shear wall two jiaos of indentation, there simultaneously, and weld up and down;
Second step: the vertical distribution reinforcement of the vertical distribution reinforcement of lower floor and upper strata of precast shear wall two jiaos of indentation, there is overlapped indirectly, adopt high-strength bolt to tighten through the connecting screw hole of outer junction steel plate and the tapping screw of interior junction steel plate, junction steel plate in upper strata is connected with junction steel plate outside lower floor;
3rd step: at precast shear wall two jiaos of breach and middle part convex indentation, there formwork, then in two jiaos of breach, middle part convex breach and square steel pipe, ordinary concrete is built, treat that cast-in-situ concrete maintenance is complete, complete the making of a large plate shear-wall element of typical case's prefabricated assembled band concealed bracings.
Compared with cast-in-situ steel reinforced concrete shear wall structure, the present invention's major part component is all prefabricated in the factory productions, the more a small amount of necessary concrete of assembled after-pouring at the scene, and plant produced efficiency is high, and can ensure making precision and quality, environmental protection; With existing prefabricated costruction link technique especially compared with existing prefabricated assembled large panel shear wall structure link technique, prefabricated assembled band concealed bracings of the present invention large plate shear wall bolt link technique, its upper and lower vertical node connects more reliable, globality is better, construct more easy, connector quantity reduces obviously, and node and steel frame form entirety, shear wall supporting capacity is significantly improved, effectively be thinned the thickness of shear wall, have again obvious multiple seismic-proof, under geological process, performance is good simultaneously.
Accompanying drawing explanation
Fig. 1 be the necessary reinforcing bar of upper strata of the present invention prefabricated panel location colligation and complete inside and outside junction steel plate connect after axle side schematic diagram.
Fig. 2 is the positive elevational schematic view of the prefabricated assembled band concealed bracings of the present invention one large plate shear wall bolt connected node.
Fig. 3 is 1-1 and the 2-2 generalized section of Fig. 2.
Fig. 4 is convex gap regions bolt connection node generalized section in the middle part of the large plate shear wall of the present invention's prefabricated assembled band concealed bracings.
Fig. 5 is the axle side schematic diagram of a slice of the present invention prefabricated assembled band concealed bracings reinforced concrete wall panel.
Fig. 6 be steel pipe of the present invention and X-shaped steel plate diagonal brace node be welded to connect schematic diagram.
Fig. 7 is the prefabricated assembled large plate shear wall axle side schematic diagram that a slice of the present invention has built connected node.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the invention will be further described:
A prefabricated assembled band concealed bracings large plate shear wall bolt connected node technology, comprises the large plate 3 of steel concrete arranging band concealed bracings, and cast-in-situ concrete 16;
The large plate of steel concrete of described band concealed bracings, the X-shaped steel plate diagonal brace 8 of 9 steel plates is followed closely in the built-in band shearing resistance of large plate;
The large plate of steel concrete of described band concealed bracings, sleeper is established on large plate both sides, and sleeper core establishes square steel pipe 12;
The large plate of steel concrete of described band concealed bracings, reserved notch 19 is established on large plate top, reserved vertical distribution reinforcement 1, by the outer junction steel plate 5 of continuous two-sided fillet weld seam in the middle part of vertical distribution reinforcement 1, preset level distribution reinforcement 2, horizontal distribution reinforcing bar is connected with outer junction steel plate 5 by two-sided continuous fillet weld, and connecting screw hole 20 is established at outer junction steel plate 5 center;
The large plate of steel concrete of described band concealed bracings, two jiaos of breach 15 are established in large plate lower end, reserved vertical distribution reinforcement 1;
The top of described square steel pipe 12 is connected to stiffening rib 13 at internal welding, and stiffening rib 13 stretches out the prefabricated large board wall body of lower floor and stretches into the prefabricated large board wall body certain distance in upper strata;
The large plate of steel concrete of described band concealed bracings, reserves convex breach 4 in lower end central region, the inner pre-buried steel silk netting 18 of convex breach 4 wallboard;
The large plate of steel concrete of described band concealed bracings, in lower end, convex breach 4 place reserves vertical distribution reinforcement 1, and vertical distribution reinforcement 1 is by junction steel plate 6 in continuous two-sided fillet weld seam, and tapping screw 21 is established at interior junction steel plate 6 center;
The large board wall body of described prefabricated assembled band concealed bracings is reserved notch 19 by insertion lower floor's shear wall top in convex breach 4 region in the middle part of the shear wall of upper strata and is located, nut is considered as by containing junction steel plate 6 in tapping screw 21, adopt high-strength bolt 7 to tighten with the tapping screw 21 of interior junction steel plate 6 through the connecting screw hole 20 of outer junction steel plate 5, junction steel plate in upper strata 6 is connected with junction steel plate outside lower floor 5;
The large plate of steel concrete of described band concealed bracings, in its X-shaped steel plate diagonal brace 8 and sleeper, square steel pipe 12 adopts L angle steel 14 to weld.
The first step: the assembled large panel of the band concealed bracings that is prefabricated in the factory, reserved notch 19 is established on large plate top, two jiaos, large plate lower end band jagged 15, and reserve convex breach 4 at the middle part of lower end, first the prefabricated X-shaped steel plate diagonal brace 8 with shearing resistance nail 9, be welded with the square steel pipe 12 of stiffening rib 13, with the outer junction steel plate 5 of connecting screw hole 20 and with junction steel plate 6 in tapping screw 21, then colligation horizontal reinforcement 2 and vertical reinforcement 1, and sleeper indulges muscle 10 and sleeper stirrup 11 makes reinforcing cage, convex indentation, there metal binding wire mesh sheet 18 in the middle part of lower end, insert X-shaped steel plate diagonal brace 8 and square steel pipe 12, then the node of X-shaped steel plate diagonal brace 8 and square steel pipe 12 is welded with L angle steel 14, at the outer junction steel plate 5 of upper end vertical reinforcement 1 central region welding, junction steel plate 5 place weld horizontal reinforcing bar 2 outside, junction steel plate 6 in the welding of convex gap regions vertical reinforcement 1 place, lower end, square steel pipe 12 inherent prefabricated time not concreting, formwork after reinforcing bar and steel frame make, reserved necessary breach, concreting forms prefabricated assembled band concealed bracings reinforced concrete wall panel.
Second step: will to be prefabricated in the factory and the prefabricated band concealed bracings assembled large panel shear wall reaching design strength transports to in-site installation location and temporary fixed, by prefabricated assembled for upper strata band concealed bracings large plate shear wall hoisted in position, the top embedding lower floor's precast shear wall is reserved in notch 19, the stiffening rib 13 of lower floor's shear wall is inserted in the square steel pipe 12 at upper strata shear wall two jiaos of breach 15 places simultaneously, and weld up and down, the vertical distribution reinforcement of lower floor 1 at two jiaos of breach 15 places is overlapped indirectly with the vertical distribution reinforcement 1 in upper strata, high-strength bolt 7 is adopted to tighten with the tapping screw 21 of interior junction steel plate 6 through the connecting screw hole 20 of outer junction steel plate 5, junction steel plate in upper strata 6 is connected with junction steel plate outside lower floor 5.
3rd step: at two jiaos of breach 15 and convex breach 4 place, middle part formwork, then in two jiaos of breach 15, middle part convex breach 4 and square steel pipe 12, ordinary concrete 16 is built, treat that cast-in-situ concrete 16 maintenance is complete, complete the making of a large plate shear-wall element of typical case's prefabricated assembled band concealed bracings.
It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (9)
1. a bolt link technique for the large plate shear wall of prefabricated assembled band concealed bracings, this technology comprises the large plate of upper and lower prefabricated band concealed bracings steel concrete and cast-in-situ concrete; The large plate of described band concealed bracings steel concrete comprises prefabricated panel, notch is reserved at top, two jiaos, lower end breach, convex breach, steel fabric sheet, distribution reinforcement, sleeper indulge muscle and stirrup, square steel pipe, X-shaped steel plate diagonal brace, inside and outside junction steel plate in the middle part of lower end; Described band concealed bracings steel concrete large plate sleeper square steel pipe and X-shaped steel plate diagonal brace are welded into steel frame by L angle steel, and steel mesh reinforcement and concrete jointly stressed; Described square steel pipe top tape stiffening rib and stretch into upper strata square steel pipe certain distance; Two jiaos, described lower end breach has vertical distribution reinforcement, and convex gap regions has steel fabric sheet, containing the outer junction steel plate of connecting screw hole, containing junction steel plate in tapping screw and vertical distribution reinforcement; Described two jiaos of breach are overlapped indirectly by upper and lower two-layer vertical reinforcement, and middle part convex gap regions is inserted lower floor's shear wall top by upper strata shear wall and reserved notch, then interior junction steel plate is considered as nut, adopt high-strength bolt to connect inside and outside junction steel plate; Then at two jiaos of breach and middle part convex indentation, there formwork, in two jiaos of breach, middle part convex breach and square steel pipe, ordinary concrete is built.
2. prefabricated assembled band concealed bracings according to claim 1 large plate shear wall bolt link technique, it is characterized in that, prefabricated assembled band concealed bracings steel concrete is prefabricated in the factory production, top is reserved with vertical distribution reinforcement and reserved notch, weld outer junction steel plate in the middle part of vertical distribution reinforcement, connecting screw hole is established at outer junction steel plate center.
3. prefabricated assembled band concealed bracings according to claim 1 large plate shear wall bolt link technique, is characterized in that, end band two jiaos of breach under the large plate of prefabricated reinforced concrete, breach is reserved with vertical distribution reinforcement.
4. prefabricated assembled band concealed bracings according to claim 1 large plate shear wall bolt link technique, it is characterized in that, prefabricated reinforced concrete large plate lower end central region is reserved with convex breach, the inner pre-buried steel silk netting of indentation, there prefabricated panel, outside reserved vertical distribution reinforcement, junction steel plate in the welding of vertical distribution reinforcement place, tapping screw is established at interior junction steel plate center.
5. prefabricated assembled band concealed bracings according to claim 1 large plate shear wall bolt link technique, it is characterized in that, two jiaos, lower end gap regions is overlapped indirectly by the vertical distribution reinforcement of upper and lower two-layer shear wall, middle part convex gap regions inserts lower floor's shear wall top notch by upper strata shear wall, interior junction steel plate is considered as nut, adopt high-strength bolt to tighten through the connecting screw hole of outer junction steel plate and the tapping screw of interior junction steel plate, junction steel plate in upper strata is connected with junction steel plate outside lower floor.
6. prefabricated assembled band concealed bracings according to claim 1 large plate shear wall bolt link technique, it is characterized in that, the large strip of prefabricated reinforced concrete has sleeper, and sleeper core is square steel pipe, square steel pipe inserts when prefabricated large plate, and not concreting in square steel pipe time prefabricated.
7. prefabricated assembled band concealed bracings according to claim 1 large plate shear wall bolt link technique, it is characterized in that, square steel pipe inside top in the large plate of prefabricated reinforced concrete is welded with stiffening rib, and stiffening rib inserts bottom the square steel pipe of upper strata after stretching out square steel pipe top certain distance.
8. prefabricated assembled band concealed bracings according to claim 1 large plate shear wall bolt link technique, it is characterized in that, the steel concrete large board wall body of two jiaos of breach is prefabricated, two jiaos of gap regions and middle part convex gap regions cast-in-place, X-shaped steel plate diagonal brace and square steel pipe are all interior when prefabricated to be buried, and forms the large plate shear wall of prefabricated assembled band concealed bracings overall after each parts joint connection in site after support mold pouring ordinary concrete.
9. a construction method for prefabricated assembled band concealed bracings according to claim 1 large plate shear wall bolt link technique, comprises the following steps:
The first step: will to be prefabricated in the factory and the prefabricated band concealed bracings assembled large panel shear wall reaching design strength transports to in-site installation location and temporary fixed, by prefabricated assembled for upper strata band concealed bracings large plate shear wall hoisted in position, the top embedding lower floor's precast shear wall is reserved in notch, the stiffening rib of lower floor's shear wall is inserted in the square steel pipe of upper strata shear wall two jiaos of indentation, there simultaneously, and weld up and down;
Second step: the vertical distribution reinforcement of the vertical distribution reinforcement of lower floor and upper strata of precast shear wall two jiaos of indentation, there is overlapped indirectly, adopt high-strength bolt to tighten through the connecting screw hole of outer junction steel plate and the tapping screw of interior junction steel plate, junction steel plate in upper strata is connected with junction steel plate outside lower floor;
3rd step: at precast shear wall two jiaos of breach and middle part convex indentation, there formwork, then in two jiaos of breach, middle part convex breach and square steel pipe, ordinary concrete is built, treat that cast-in-situ concrete maintenance is complete, complete the making of a large plate shear-wall element of typical case's prefabricated assembled band concealed bracings.
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