CN103452246B - The grouting deformed steel pipe box cylinder that the slurry anchor docking of a kind of reinforcing bar connects - Google Patents

The grouting deformed steel pipe box cylinder that the slurry anchor docking of a kind of reinforcing bar connects Download PDF

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Publication number
CN103452246B
CN103452246B CN201310287977.1A CN201310287977A CN103452246B CN 103452246 B CN103452246 B CN 103452246B CN 201310287977 A CN201310287977 A CN 201310287977A CN 103452246 B CN103452246 B CN 103452246B
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steel pipe
grouting
reinforcing bar
box cylinder
pipe box
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CN201310287977.1A
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Chinese (zh)
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CN103452246A (en
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郭正兴
郑永峰
刘家彬
朱张峰
肖全东
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中国建筑股份有限公司
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Abstract

The invention discloses the grouting deformed steel pipe box cylinder that the slurry anchor docking of a kind of reinforcing bar connects, in described seamless steel pipe (1) from two ends to insert two connected reinforcing bars (7) and at cavity at pour into the non-shrinkage cement-based grouting material of high intensity (8) and form steel reinforcement abutting joints slurry anchor connection joint;Described grouting deformed steel pipe box cylinder directly uses seamless steel pipe (1) saw to cut processing and fabricating and forms;Seamless steel pipe (1) outer surface has the multiple tracks radially inverted trapezoidal groove (2) of rolling and processing molding, have with seamless steel pipe (1) inner surface at groove (2) same position and follow rolling groove (2) deformation and arc-shaped bulge loop rib (3) that convexes to form, the inverted trapezoidal groove (2) of described seamless steel pipe (1) outer surface vertically with seamless steel pipe (1) central point be boundary be that many middle parts, two ends are distributed less.The grouting deformed steel pipe box cylinder of the present invention, can be greatly reduced grouting cast steel or the expense of machining steel bushing, simplified processing process that in prefabrication and assembly construction concrete component, the anchor docking of steel bar stress slurry connects, can directly apply to engineering practice.

Description

The grouting deformed steel pipe box cylinder that the slurry anchor docking of a kind of reinforcing bar connects
Technical field
The present invention relates to the grouting deformed steel pipe box cylinder that the slurry anchor docking of a kind of prefabrication and assembly construction concrete component steel bar stress connects, belong to Concrete structure engineering technical field.
Background technology
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 Plug.
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.
Accompanying drawing explanation
Fig. 1 is the grouting deformed steel pipe box cylinder schematic diagram of the present invention;
Fig. 2 is grouting deformed steel pipe box cylinder seamless steel pipe typical outer surface radial groove and medial wall, same position arc-shaped bulge loop The enlarged drawing of rib;
Fig. 3 is two connected steel bar stresses to inserting grouting deformed steel pipe box cylinder, and presses that to pour into high intensity non-shrinkage cement-based Grouting material forms the schematic diagram of slurry anchor steel reinforcement abutting joints jointing;
Fig. 4 is that grouting deformed steel pipe box cylinder uses three shaft roller rolling seamless steel pipes to form the ring schematic diagram of outer recessed convex;
Fig. 5 is that precast concrete vertical reinforcement uses grouting deformed steel pipe docking sleeve connection diagram;
Fig. 6 is that precast concrete horizontal reinforcement uses grouting deformed steel pipe docking sleeve connection diagram.
Wherein have: seamless steel pipe 1, inverted trapezoidal groove 2, arc-shaped bulge loop rib 3, plasma discharge mouth 4, ring-shaped rubber plug 5, location Pin 6, by even reinforcing bar 7, strength cement-based grouting material 8.
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 Nail;
(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.

Claims (1)

1. the grouting deformed steel pipe box cylinder that a reinforcing bar slurry anchor docking connects, including seamless steel pipe (1), outer surface of steel tube inverted trapezoidal groove (2) and steel pipe internal-surface arc-shaped bulge loop rib (3), in described seamless steel pipe (1) from two ends to insert two by even reinforcing bar (7) and at cavity at pour into the non-shrinkage cement-based grouting material of high intensity (8) and form steel reinforcement abutting joints slurry anchor connection joint;It is characterized in that: described grouting deformed steel pipe box cylinder directly uses seamless steel pipe (1) saw to cut processing and fabricating and forms;Seamless steel pipe (1) outer surface has three shaft rollers of the gusseted such as employing to roll cold-formed multiple tracks radially inverted trapezoidal groove (2), arc-shaped bulge loop rib (3) following rolling groove (2) deformation and convex to form is had with seamless steel pipe (1) inner surface at groove (2) same position, the inverted trapezoidal groove (2) of described seamless steel pipe (1) outer surface vertically with seamless steel pipe (1) central point be boundary be that many middle parts, two ends are distributed less, seamless steel pipe (1) both sides port arranges median pore radius equal to being inserted by the ring-shaped rubber plug (5) of company's reinforcing bar (7) by even reinforcing bar (7) diameter, arrange at the middle part of seamless steel pipe (1) and control by the alignment pin (6) of even reinforcing bar (7) insertion depth;The width of groove is 4~8mm, and the degree of depth is 2~4mm, and trapezoidal hypotenuse is 40 °~60 ° with the angle on bottom land limit;Follow the deformation of periphery rolling groove with seamless steel pipe (1) inner surface of seamless steel pipe (1) outer surface inverted trapezoidal groove (2) corresponding position and convex to form arc-shaped bulge loop rib (3), bulge loop rib (3) rib a height of 1.5~3mm;Offer pressure injection at the two ends distance port 15~25mm of seamless steel pipe (1) and fill grouting mouth and the plasma discharge mouth (4) of the non-shrinkage cement-based grouting material of high intensity being connected reinforcing bar and grouting deformed steel pipe box cylinder space;
The concrete processing method of the grouting deformed steel pipe box cylinder that the slurry anchor docking of above-mentioned reinforcing bar connects is:
Step 1, according to by even reinforcing bar (7) diameter, select appropriate length, diameter and the low-alloy steel of wall thickness or alloy steel seamless steel tube (1), directly saw section is standby;
Step 2, according to the material of selected seamless steel pipe (1) and wall thickness, select the fast pulley suitably mating the gusseted such as special roller and formation, seamless steel pipe (1) outer surface mouth the most from the middle to both ends is rolled by inverted trapezoidal groove (2) number of design by three shaft rolling machines, and inspects the height of arc-shaped bulge loop rib (3) of near ports steel pipe inner wall upper process by random samples;
Step 3, the axial middle part of seamless steel pipe (1) bore control insert reinforcing bar length dowel hole, and install alignment pin (6) fix;
Step 4, at the grouting mouth of the non-shrinkage cement-based grouting material of pressure injection high intensity of brill 16 ~ 20mm away from the port 15 ~ 25mm of seamless steel pipe (1) two ends and plasma discharge mouth (4), and the special plastics fastener connecting grouting plastic tube is installed, complete the processing of grouting deformed steel pipe box cylinder;
The construction method that the vertical steel bar stress of prefabrication and assembly construction concrete column or wall body construction uses above-mentioned grouting deformed steel pipe box cylinder to carry out docking connection is:
Step 1, first concrete column or concrete walls are layered prefabricated, in prefabricated components processing factory, grouting deformed steel pipe box cylinder is installed to member bottom section by even reinforcing bar (7) end, and insert grouting deformed steel pipe box cylinder to prescribed depth, there is port ring-shaped rubber plug (5) closure that reinforcing bar inserts, another section of port of grouting deformed steel pipe box cylinder is fixed with prefabricated components mould, casting concrete maintenance are stacked stand-by to prescribed strength, the demoulding;
Step 2, during prefabricated components in-site installation, on the grouting deformed steel pipe box nozzle alignment flooring being embedded in bottom prefabricated components on connected steel bar stress same position stretch out expose by even reinforcing bar (7) head, and slowly decline by hoisting machinery, put in place until prefabricated components are installed, after prefabricated components correction and fixing temporarily, closure splicing seams, and the non-shrinkage cement-based grouting material of the high intensity (8) that the grouting mouth pressure injection of the grouting deformed steel pipe box cylinder at low level is stirred, until plasma discharge mouth (4) grouting material of seam total cross-section and grouting deformed steel pipe box cylinder high level is discharged, the intensity of maintenance extremely regulation after closure in time, complete the vertical steel bar stress slurry anchor connection of prefabricated components;
Prefabrication and assembly construction beams of concrete and beam, wall and wall or wall use above-mentioned grouting deformed steel pipe box cylinder to carry out with the horizontal force reinforcing bar of post, and construction method that docking is connected is:
Step 1, at precast beam and beam, wall is connected future insufficiency position with wall or wall with the horizontal reinforcement of post, first grouting deformed steel pipe box cylinder related port ring-shaped rubber plug (5) entirety is inserted in left end by even reinforcing bar (7), after second half prefabricated components are installed and are put in place, to be directed at one by one with termination, right side by even termination, reinforcing bar (7) left side, moved being arranged on left end to the right by the grouting deformed steel pipe box cylinder on even reinforcing bar (7), until the middle part of grouting deformed steel pipe box cylinder symmetry is positioned at the centre of the head by even reinforcing bar (7) and head, check the closure sealing effectiveness of grouting deformed steel pipe box cylinder two-port ring-shaped rubber plug (5), install and connect grouting mouth and the plastic tube of plasma discharge mouth (4);
Step 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 grouting mouth pressure perfusion non-shrinkage cement-based grouting material of high intensity (8) that grouting deformed steel pipe box cylinder is reserved, until plasma discharge mouth grouting material is discharged and blocked, complete to be connected by the slurry anchor steel reinforcement abutting joints of even reinforcing bar (7) between prefabricated components.
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CN107905455A (en) * 2017-12-01 2018-04-13 武汉理工大学 A kind of precast concrete bar connecting grout sleeve and preparation method thereof
CN108756071B (en) * 2018-06-20 2020-07-03 广州市番禺大石建筑工程有限公司 Straight thread sleeve for building
CN109629766A (en) * 2018-12-28 2019-04-16 同济大学 Longitudinal steel pipe sleeve for becoming wall thickness
CN111236452A (en) * 2020-01-14 2020-06-05 中国一冶集团有限公司 Prefabricated post-cast strip for basement and installation method thereof

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