For meeting the anti-seismic performance requirement of prefabricated concrete structure, when the splicing of precast concrete site operation is installed, it is pre-
Between component processed, method of attachment and the connection reliability of main steel bar stress become the novel prefabrication and assembly construction concrete structure engineering of decision and become
The key of merit application.The slurry anchor docking method of attachment of currently known precast concrete main steel bar stress has connected two piece
Reinforcing bar is to inserting cylindric cast steel steel bushing, and the full grout sleeve connection side of the non-shrinkage cement-based grouting material of high intensity is filled in its gap
Method；Or the sleeve of slurry anchor reinforcing bar uses forging or process for stamping to make, or round steel or polygonal shaped steel machining is used to make, will
Two connected reinforcing bars are to inserting cylinder-shaped steel sleeve, and the set that is entirely in the milk of the non-shrinkage cement-based grouting material of high intensity is filled in its gap
Cylinder method of attachment；Or slurry anchor reinforcing bar sleeve make bottle shape Cast-steel Sleeve, one end is connected reinforcing bar and is inserted directly in sleeve, separately
One end connects the female thread of reinforcing bar at bottleneck position turnery processing, is screwed in the bottle of Cast-steel Sleeve after even end reinforced straight spiral grains
Mouth section, Cast-steel Sleeve internal pore is filled the non-shrinkage cement-based grouting material of high intensity, is formed two reinforcing bars one connected and connect for slurry anchor
Connecing, another root is half grouting Cast-steel Sleeve method of attachment of straight screw connection；Or direct round steel is cut into the tubular at the bottom of band
Steel bushing, utilizes processing at the bottom of certain thickness cylinder to connect the internal thread through hole of reinforcing bar, two connected reinforcing bars, directly inserts for one
Entering in steel bushing, by pressure filling high intensity without receiving strength cement-based grouting material slurry anchor connection, another root is processed into straight thread by one end,
Threaded directly in screwed hole at the bottom of the cylinder of steel bushing, form slurry anchor bar connecting and be connected the steel that is partly in the milk of combination with straight thread reinforced bar
Sleeve connection method.
Above-mentioned known precast concrete steel bar stress docking connects, for the slurry anchor bar connecting side of the full Cast-steel Sleeve that is in the milk
Method, its Cast-steel Sleeve need to use high intensity and the cast steel material of high tenacity and precision casting process, tend to have casting flaw, therefore its
Processing cost is high, directly affects engineering large scale application；Spiral type continuous circular arc shape for rolling or rotary pressing processing is recessed
Convex ripple rib is in the milk steel bushing entirely, and its sleeve non-deformability under axial push-pull power is poor；It is spaced the outer recessed of annular machining
The steel bushing that is entirely in the milk of convex, its machining amount is big, the cost of manufacture directly strengthened；For by even two reinforcing bars, one is
Slurry anchor connection, half grouting Cast-steel Sleeve that one is straight screw connection or the band bottom tube-like of machining are partly in the milk steel bushing, its casting
Steel bushing tends to have casting flaw, and the steel bushing machining amount that its round steel is processed into is excessive, and wherein one connected end reinforced
Also needing to be processed into straight thread, these all cause processing and fabricating cost to strengthen, and economic index is bad, also have impact on engineering large area
Popularization and application.
Summary of the invention
Technical problem: not enough in order to overcome present in the grout sleeve technology that the slurry anchor docking of existing reinforcing bar connects, the present invention provides
The grouting deformed steel pipe box cylinder that between a kind of prefabrication and assembly construction xoncrete structure prefabricated components, the anchor docking of steel bar stress slurry connects, directly utilizes
The seamless steel pipe of low-alloy steel or steel alloy makes full grout sleeve, it is to avoid tubular is in the milk Cast-steel Sleeve or bottle shape half grouting entirely
The material requirements of Cast-steel Sleeve is high, hot investment casting requires the high and casting flaw impact on its stress performance, it is to avoid continuous rotation
The inside and outside ripple rib steel bushing that is entirely in the milk bears axial push-pull ability shortcoming, and it also avoid one end for the slurry anchor reinforcing bar other end is straight spiral shell
Stricture of vagina connects the defect that metalworking amount is big and production efficiency is low of round steel machining half grout sleeve of reinforcing bar, makes full use of low-alloy
Steel and the good ductility of alloy steel seamless steel tube, three shaft rollers of the gusseted such as employing radially roll at seamless steel pipe outer surface,
Form the full grouting deformed steel pipe box cylinder having the outer recessed convex of multiple tracks vertically, gap is filled high intensity non-shrinkage cement-based filling betwixt
Slurry, can realize meeting the slurry anchor steel reinforcement abutting joints jointing of the steel concrete supporting performance requirement that national project specification specifies,
Improve the processing technique of grout sleeve, reduce cost, job site precast concrete steel bar stress can be directly applied to
The engineering practice that slurry anchor docking connects.
Technical scheme: for solving above-mentioned technical problem, the grouting deformed steel pipe box cylinder that reinforcing bar of the present invention slurry anchor docking connects uses
Technical scheme is:
The grouting deformed steel pipe box cylinder that reinforcing bar of the present invention slurry anchor docking connects includes seamless steel pipe, outer surface of steel tube inverted trapezoidal groove and
Steel pipe internal-surface arc-shaped bulge loop rib, in described seamless steel pipe from two ends to insert two connected reinforcing bars and at cavity at pour into height
The non-shrinkage cement-based grouting material of intensity forms steel reinforcement abutting joints slurry anchor connection joint；It is characterized in that: described grouting deformed steel pipe box cylinder
Directly use seamless steel pipe saw to cut processing and fabricating to form；Seamless steel pipe outer surface has the multiple tracks radially inverted trapezoidal of rolling and processing molding recessed
Groove, the seamless steel pipe interior surface at position same with groove has the arc-shaped bulge loop rib following rolling groove variations and convex to form, institute
The inverted trapezoidal groove stating seamless steel pipe outer surface is that many middle parts, two ends are distributed less vertically with seamless steel pipe central point for boundary.
Three shaft roller rolling cold working of the gusseted such as the inverted trapezoidal groove employing of seamless steel pipe outer surface make molding, groove
Width is 4～8mm, and the degree of depth is 2～4mm, and trapezoidal hypotenuse is 40 °～60 ° with the angle on bottom land limit.
The periphery rolling deformation of groove is followed and convex with the seamless steel pipe interior surface of seamless steel pipe outer surface inverted trapezoidal groove corresponding position
Rise and form arc-shaped bulge loop rib, bulge loop rib rib a height of 1.5～3mm.
Offer pressure injection at the two ends distance port 15～25mm of seamless steel pipe to fill by even reinforcing bar and grouting deformed steel pipe box cylinder space
The grouting mouth of the non-shrinkage cement-based grouting material of high intensity and plasma discharge mouth.
Seamless steel pipe both sides port arranges the median pore radius ring-shaped rubber that can insert connected reinforcing bar equal to connected bar diameter
Arrange at the middle part of seamless steel pipe and control by the alignment pin of even reinforcing bar insertion depth.
Beneficial effect: the grouting that the prefabricated components steel bar stress slurry anchor docking of the prefabrication and assembly construction xoncrete structure that the present invention provides connects
Deformed steel pipe box cylinder, has the advantage that 1) directly use low-alloy or alloy seamless steel pipe saw section to be processed into grouting deformation steel pipe
Sleeve, improves the processing technique of grout sleeve, and working (machining) efficiency is high, and molding is simple, effectively reduces the cost of grout sleeve；2)
The seamless steel pipe periphery of the grouting deformed steel pipe box cylinder inverted trapezoidal groove by rolling and processing, improves inverted trapezoidal through rolling cold working
The intensity of rolling portion faces and hardness, increase the axial resistance to deformation deforming steel pipe socket cylinder when connected reinforcing bar is tension or in compression
Ability.3) when seamless steel pipe periphery forms the inverted trapezoidal groove that multiple tracks has one fixed width, its corresponding position steel pipe medial wall shape
The arc-shaped bulge loop rib become is on the premise of being highly guaranteed, and its width is strengthened, namely shearing resistance is improved so that
The resistance to plucking output capacity of the grouting material anchoring section that parcel is connected reinforcing bar in being inserted in steel pipe sleeve is improved.4) it is cast in prefabricated mixing
Grouting deformed steel pipe box cylinder in solidifying soil component, the multiple tracks that its periphery is formed has the inverted trapezoidal groove of one fixed width and adds with mixed
The cohesive force of solidifying soil, has reached the phase same-action with deformed bar Rib Reinforced, improves prefabricated components and is in the milk under stress change
The common effect of concrete cover outside shape steel pipe sleeve, prevents component local in a state of use from bursting apart in advance.
Detailed description of the invention
The grouting deformed steel pipe box cylinder that between prefabrication and assembly construction xoncrete structure prefabricated components, the anchor docking of steel bar stress slurry connects, including seamless
Steel pipe, connected reinforcing bar and fill the non-shrinkage cement-based grouting material of high intensity in space between the two；Described slurry anchor steel reinforcement abutting joints
The seamless steel pipe connected, its outer surface uses by three axle hydraulic roller wheels radially without cutting rolling and processing, utilizes tube material
Plastic deformation, outer surface of steel tube is after being rolled into inverted trapezoidal groove, is strengthened in the top layer at groove position, its yield strength and pole
Limit intensity is increased, and hardness slightly improves, increase sleeve bear axially draw, non-deformability under pressure, exist simultaneously
The steel pipe internal-surface at the same position of groove forms the arc-shaped bulge loop rib with regulation height of projection and one fixed width, and stop is filled in
Connected grouting material anchoring body between reinforcing bar and steel pipe sleeve slides axially.The outer recessed convex ring of seamless steel pipe surfaces externally and internally
Axially disposed have multiple tracks, and arrange few at mid portion, the grouting that in formation insertion steel pipe sleeve, the reinforcing bar second half section is longer
Material anchoring section；Near two-port, position is arranged more, and what formation multiple tracks prevention grouting material anchoring section was extracted keeps out thing.Described
The seamless steel pipe of the full grout sleeve that slurry anchor steel reinforcement abutting joints connects, at the inverted trapezoidal groove of its outer surface radially rolling, by three axles
Hydraulic roller wheel roll forming, a movable pulley is pressurizeed by hydraulic jack, coordinates two fast pulleys to synchronize to drive seamless steel pipe to rotate,
Forming continuous print border groove, its groove width is 4～8mm, and the degree of depth is 2～4mm, and trapezoidal hypotenuse is 40～60 with the angle on bottom land limit
°.Deform the Altitude control of inwall bulge loop rib of formation 1.5～3mm with peripheral groove simultaneously.Having of seamless steel pipe periphery
When the inverted trapezoidal groove of one fixed width shapes, increase the width of arc-shaped bulge loop rib at it with medial wall, position, be equivalent to widen
The facewidth at the bottom of the tooth of similar mechanical thread, enhances bulge loop rib shear resistance vertically, namely improves anchoring steel in sleeve
The mechanical snap power of muscle grouting material anchoring section.The two-port of the seamless steel pipe of described grouting deformed steel pipe box cylinder is provided with closure quilt
Even reinforcing bar and the rubber stopper in socket port gap, and fill the high-strength of filling gap being provided with pressure with a certain distance from seamless steel pipe port
Spend the grouting mouth of non-shrinkage cement-based grouting material, plasma discharge mouth, it is possible to exchange and use；Described grouting deformed steel pipe box cylinder is seamless
Steel pipe, is axially provided with, at the point of symmetry of middle part, the alignment pin controlling to be inserted deformed steel pipe length sleeve by even reinforcing bar, it is simple to pre-
Controlling the insertion depth of connected steel bar stress during concrete component processed, when job site horizontal reinforcement connects, this alignment pin also may be used
Do not set.
The grouting deformed steel pipe box cylinder of above-mentioned reinforcing bar slurry anchor connection, compare prior art, remains former grouting Cast-steel Sleeve and cuts
The inwall cutting processing steel bushing utilizes protrusion operative constraint and stops the parcel reinforcing bar grouting material anchoring section inserting grout sleeve along axle
To slip, the advantage increasing mechanical snap power, but change shape and processing molding method, the steel of grout sleeve inwall protrusion
Pipe periphery inverted trapezoidal groove and the integrated machine-shaping simultaneously of medial wall circular arc bulge loop rib co-located, simplify processing technique, carry
High working (machining) efficiency, and avoid similar cast steel or rotate the rolling concavo-convex rib of arc-shaped ripple and machining steel bushing continuously
The defect of cylinder.Meanwhile, obtain deformation strengthening at seamless steel pipe outer surface multiple tracks inverted trapezoidal groove by rolling and processing, improve filling
The slurry sleeve non-deformability axially drawing, under pressure.Additionally, during rolling has the inverted trapezoidal groove of one fixed width,
The width of the protruding arc-shaped bulge loop rib formed in steel pipe is strengthened, and strengthens the shear resistance of this rib.
The method utilizing grouting deformed steel pipe box cylinder to carry out the slurry anchor docking connection of precast concrete steel bar stress of the present invention is:
When concrete prefabricated element factory makes prefabricated components, by connected end reinforced insertion one end port with rubber stopper
In grouting deformed steel pipe box cylinder, reinforcing bar head reaches the alignment pin position in the middle part of sleeve, the other end port of grouting deformation steel pipe with
The template of prefabricated components is fixed, and is connected with grouting mouth and plasma discharge mouth by plastics grout pipe and fixes, pours concrete members maintenance extremely
Prescribed strength.After precast concrete is transported to job site, carries out hoisting prefabricated component, and component stays the grouting set become
Shape steel pipe sleeve is directed at the connected reinforcing bar of another root and slowly inserts, and puts, prefabricated components splicing to the spelling between prefabricated components in place
After seam periphery closure, by non-shrinkage cement-based for the high intensity of stirring grouting material from the filling being positioned at low level of grouting deformed steel pipe box cylinder
Slurry mouth pressure pour into, make grouting material from be positioned at high level plasma discharge mouth discharge, block plasma discharge mouth, grouting material maintenance to prescribed strength,
Form the joint that slurry anchor steel reinforcement abutting joints connects.
Below in conjunction with the accompanying drawings the present invention is further described.
It is the filling that between a kind of prefabrication and assembly construction xoncrete structure prefabricated components, the anchor docking of steel bar stress slurry connects as shown in Figure 1,2,3, 4
Slurry deformed steel pipe muff joint, including seamless steel pipe 1, the axially spaced multiple tracks inverted trapezoidal groove 2 being distributed in outer surface and point
Cloth is at the bulge loop rib 3 of the arc-shaped projection of corresponding inner surface.The two ends mouth of pipe of seamless steel pipe 1 is provided with ring-shaped rubber plug plug 5,
Middle part is provided with the alignment pin 6 controlling connected reinforcing bar 7 intubating length, is provided with pressure injection from two-port 15～25mm and fills
The grouting mouth of slurry and plasma discharge mouth 4.
The concrete processing method of above-mentioned reinforcing bar slurry anchor grouting deformed steel pipe box cylinder is:
(1) according to connected reinforcing bar 7 diameter, appropriate length, diameter and the low-alloy steel of wall thickness or the seamless steel of steel alloy are selected
Pipe 1, directly saw cuts standby；
(2) according to material and the wall thickness of selected seamless steel pipe 1, the suitably coupling gusseted such as special roller 9 and formation is selected
Fast pulley 10, on three shaft rolling machines to seamless steel pipe 1 outer surface mouth the most from the middle to both ends by design inverted trapezoidal recessed
Groove 2 number carries out rolling (Fig. 4), and inspects the height of the arc-shaped bulge loop rib 3 of near ports steel pipe inner wall upper process by random samples；
(3) bore the dowel hole controlling to insert reinforcing bar length in the axial middle part of seamless steel pipe 1, and alignment pin 6 riveting is installed
(4) in the non-shrinkage cement-based filling of pressure injection high intensity boring 16～20mm away from seamless steel pipe 1 two ends port 15～25mm
The grouting mouth of slurry and plasma discharge mouth 4, and the special plastics fastener connecting grouting plastic tube is installed, complete the deformed steel pipe box that is in the milk
The processing of cylinder.
The vertical applied force reinforcing bar of above-mentioned prefabrication and assembly construction concrete column or wall body construction uses grouting deformed steel pipe box cylinder (Fig. 5) to carry out
The construction method that docking connects is:
(1) first concrete column or concrete walls are layered prefabricated, will be in the milk the installation of deformed steel pipe box cylinder in prefabricated components processing factory
To steel bar stress 7 end that member bottom section is connected, and insert grouting deformed steel pipe box cylinder to prescribed depth, have reinforcing bar to insert
Port ring-shaped rubber plug 5 blocks, and another section of port of sleeve is fixed with prefabricated components mould, and casting concrete maintenance are to rule
Determining intensity, the demoulding is stacked stand-by.
(2) during prefabricated components in-site installation, the grouting deformed steel pipe box that will be embedded in bottom prefabricated components on connected steel bar stress
On nozzle alignment flooring, same position stretches out connected reinforcing bar 7 head exposed, and slowly declines by hoisting machinery, until in advance
Component processed is installed and is put in place, after prefabricated components correction and fixing temporarily, blocks splicing seams, and the grouting deformation steel pipe at low level
The non-shrinkage cement-based grouting material of high intensity 8 that grouting mouth 4 pressure injection of sleeve is stirred, until seam total cross-section and grout sleeve are high
Plasma discharge mouth 4 grouting material at Wei is discharged, and after closure, maintenance, to the intensity of regulation, completes the vertical applied force reinforcing bar of prefabricated components in time
Slurry anchor connection.
Above-mentioned prefabrication and assembly construction beams of concrete and beam, wall and wall or wall use grouting deformed steel pipe box cylinder to enter with the horizontal force reinforcing bar of post
Row docking connects the construction method of (Fig. 6):
(1) it is connected future insufficiency position with wall or wall with the horizontal reinforcement of post with beam, wall at precast beam, first grouting is deformed steel pipe
Sleeve 1 related port ring-shaped rubber plug 5 entirety is inserted on the horizontal reinforcement 7 that left end is connected, at second half prefabricated components
After installation puts in place, termination on the left of connected stress horizontal reinforcement 7 is directed at one by one with termination, right side, left end will be arranged on
Grouting deformed steel pipe box cylinder 1 on connected horizontal reinforcement 7 moves to the right, until the middle part of sleeve symmetry is positioned at and is connected
The head of two horizontal reinforcements 7 connect and the centre of head, check the closure sealing effectiveness of sleeve two-port ring-shaped rubber plug 5, installs
Connect grouting mouth and the plastic tube of plasma discharge mouth 4.
(2) pour precast beam and be connected future insufficiency position concrete maintenance with wall or wall with the horizontal reinforcement of post with beam, wall, from
The reserved grouting mouth 4 non-shrinkage cement-based grouting material of pressure injection high intensity 8 of grouting deformed steel pipe box cylinder 1, until plasma discharge mouth fills
Slurry 4 is discharged and is blocked, and the slurry anchor steel reinforcement abutting joints completing horizontal reinforcement 7 between prefabricated components connects.
The above is only the preferred embodiment of the present invention, it should be pointed out that: for those skilled in the art,
Under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications also should be regarded as this
Bright protection domain.