CN102587587A - Cement grouting steel bar connecting joint - Google Patents
Cement grouting steel bar connecting joint Download PDFInfo
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- CN102587587A CN102587587A CN2011101644515A CN201110164451A CN102587587A CN 102587587 A CN102587587 A CN 102587587A CN 2011101644515 A CN2011101644515 A CN 2011101644515A CN 201110164451 A CN201110164451 A CN 201110164451A CN 102587587 A CN102587587 A CN 102587587A
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Abstract
The invention discloses a cement grouting steel bar connecting joint. The joint comprises connecting steel bars, a connecting sleeve and cement mortar, wherein a connecting body is formed at the butt joint end of two connecting steel bars by combining the connecting sleeve with hardened cement mortar which is fully filled in an internal gap of the connecting sleeve; spiral grooves or separated annular grooves are formed on the outer surface of a grouting part of the connecting sleeve; and a convex rib or a concave pit is formed on the inner wall of a tubular grouting part of the connecting sleeve which is connected with the cement mortar. The invention has the advantages that: a seamless steel pipe, a forging steel cylinder or a stamping steel cylinder with high intensity and stable performance is used as the connecting sleeve, and the grooves on the outer surface of the connecting sleeve and the convex rib on the inner hole wall of the connecting sleeve are formed by a rolling method, a spinning method or a rolling/spinning and cutting combination method. Due to the modification of a sleeve structure and materials, the using amount of raw materials is substantially reduced; due to the improvement on a sleeve machining process, the cutting amount is substantially reduced; and therefore, the cost of the sleeve is reduced, the production efficiency is improved, and the economic and technical indexes of the joint exceed those of the conventional cement grouting steel bar joint.
Description
Technical field
The present invention relates to a kind of joint that prefabricated concrete structure prefabricated units Ribbed Bar connects that is applied to, this joint is superior to existing cementation bar splice at aspects such as structure, material consumption and manufacturing costs.Can connect the reinforcing bar of vertical, level or oblique layout, therefore can be widely used in the fabricated construction system.
Background technology
In the modern prefabricated concrete structure building operations, the steel bar stress of prefabricated units mainly adopts the cementation method of attachment to connect.The Ribbed Bar that the cementation bar splice is shunk high strength cement mortar and the connection of sleeve two ends by branch sleeve, nothing is formed; Its principle is: will not have the high strength cement mortar of contraction and pour into branch sleeve; Fill the gap between full sleeve and the reinforcing bar; After the cement mortar sclerosis, combine closely with reinforcing bar that has cross rib and the sleeve lining that has internal thread, and two reinforcing bars are linked together.
The characteristics of traditional cement grouting bar splice are: branch sleeve adopts the casting technique manufacturing to form, and inner chamber is the olive shape doleiform, and sleeve is provided with a plurality of protruding ring ribs with the inwall casting of the cement mortar section of cooperation.Its shortcoming: the one, the branch sleeve overall dimensions are big; In building structure, thickness of concrete cover and rebar spacing satisfy under the situation of design specifications requirement, and the appearance and size of member is bigger; Not only improve the construction costs of unit area, and reduced the usable floor area of building; The 2nd, branch sleeve adopts casting processing to form, and guarantee that the strength of materials of this stress members and processing quality meet design requirement, and all very high to its casting technique and requirements for quality control, it is with high costs, is difficult to large-scale popularization and uses.The 3rd, sleeve outer surface all is smooth; Therefore the anchored force between sleeve outer surface and the concrete will be well below the anchored force between Ribbed Bar and the concrete; When the reinforcing bar of prefabricated units received big tensile load, the grouting adapter sleeve that length dimension reaches the bar diameter several times also can produce certain deformation, and smooth sleeve appearance can't limit the distortion of sleeve; Sleeve will break away from concrete on every side; Even crackle appears in concrete, reduced the durability of concrete structure, or forms potential safety hazard.
The different cartridge type grouting joint of a kind of and traditional cementation joint has appearred in recent years; This joint adopts round steel or steel pipe manufacturing, and end grouting connects, and the other end is threaded; Joint appearance and size is obviously dwindled; Especially length dimension obviously reduces, and the concrete section of the connector portions branch influence of anchoring effect relative mistake is dwindled, and the globality of concrete component makes moderate progress; But it is shiny surface that this joint still has above the length of bar diameter more than 6 times, and sleeve anchored force deficiency in concrete is solved at all., for the bigger branch sleeve of bar diameter, it is outstanding that this deficiency shows especially.
Industrialized building is the main developing direction of Future in China builing industry; High-rise prefabricated concrete structure building is to having very wide development space in the Urban House field; Key technology-reinforcing bar of resolving the fabricated construction globality connects; Guaranteeing to have on the excellent switching performance basis, research is joint and tube-in-tube structure more reasonably, and the popularization in the industrialized building is had great importance.
Summary of the invention
Deficiency to said cementation joint; The objective of the invention is to: a kind of reinforcing bar grouting reinforcing bar jointing is provided, and the external surface of this joint branch sleeve is provided with concaveconvex structure, makes that joint can be through the groove or the protruding and formation of the concrete on every side mechanical engagement of sleeve appearance; Increase the anchored force of adapter sleeve in concrete; Reduce the possibility that concrete component cracks at joint area, improve the overall performance of reinforced concrete member, on the basis that guarantees joint performance; Reduce the diameter and the length of joint branch sleeve; Reduce the material usage of branch sleeve, reduce production costs, this joint can be widely used in the wall, post member of fabricated construction.
For realizing above-mentioned purpose, one of technical scheme that the present invention adopts is:
A kind of cementation reinforcing bar jointing comprises connecting reinforcement, metal system branch sleeve and cement mortar, and described connecting reinforcement is two, and wherein one is the threaded reinforcing bar in termination, and another root is common Ribbed Bar; End at this branch sleeve is provided with screwed hole; This screwed hole is connected with the end of thread of this threaded reinforcing bar; This branch sleeve other end is provided with tubulose grouting portion; Described Ribbed Bar is inserted in the endoporus of this tubulose grouting portion; And through being full of a connector of non-shrinkage cement mortar combination formation in both gaps, it is characterized in that: on the cylindrical outside surfaces of described branch sleeve, be provided with groove or convexity, the tubulose grouting portion of described branch sleeve and the contacted inwall of cement mortar are provided with fin or pit.
Groove or convexity on described branch sleeve external surface, this branch sleeve axially on be continuous or at interval, upwards also be continuous or the interval in the week of this branch sleeve.
At least the described fin of part is provided with the anti-back slope that prevents that the pairing connecting reinforcement of this fin from deviating from from branch sleeve; The angle of the section of a bit locating arbitrarily on this anti-back slope and the axis of this branch sleeve is greater than 2 ° and less than 45 °, and the projected length summation of the pairing anti-back of this Ribbed Bar slope on the axis of branch sleeve is more than or equal to the diameter of 0.5 times of connecting reinforcement.
At least the described fin of part is provided with and prevents that the resistance that the pairing connecting reinforcement of this fin stretches into from entering the slope in branch sleeve; This hinder on the slope into some angle of the axis of the section at place and this branch sleeve is greater than 2 ° and less than 45 ° arbitrarily, the diameter of the projected length summation of slope on the axis of branch sleeve more than or equal to 0.5 times of connecting reinforcement advanced in the pairing resistance of this Ribbed Bar.
Described branch sleeve profile is an a straight tubular or end end that is provided with screwed hole is provided with the reduced diameter end.
On the tubulose grouting portion of the described branch sleeve barrel adjacent with the screw thread nose end, be provided with one and cross the slurry hole, this crosses the slurry hole is unthreaded hole or screwed hole; On the barrel of grouting portion near Ribbed Bar insertion mouth of described branch sleeve, be provided with an injected hole, this injected hole is unthreaded hole or screwed hole.
The advantage that the present invention has is: the groove of the external surface of the tubular metal branch sleeve of this joint or protruding in concrete can with embedding or engagement mutually between the concrete; The suffered tensile stress of joint is bigger, and when sleeve will produce distortion, concrete on every side will be through the groove or the convexity of branch sleeve external surface; For the joint branch sleeve provides corresponding support force and pressure; Branch sleeve is difficult to produce the distortion above the concrete deformation ability, and joint area and concrete become one, and the member overall performance is improved; The durability of concrete structure improves, and the degree of safety and the quality of building further promote.
In addition, set convexity or groove have anchorage effect to the cement mortar in the branch sleeve on the tubular inner wall that this joint branch sleeve and cement mortar are joined; Particularly part fin or pit are provided with the sleeve axis angle and are not more than 45 ° anti-back slope and hinder the slope.These hinder, and into the slope is towards sleeve grouting portion reinforcing bar insertion end, and the anti-back slope has tangible effect then towards the bush whorl nose end to the tensile strength that strengthens joint.When the reinforcing bar of butt joint when receiving opposing pulling force or pressure; Its stressed through the sclerosis cement mortar be delivered to the branch sleeve inwall; Convexity on the inwall or groove provide axial support power to cement mortar; And the oblique plane of described groove or convexity or curved surface also provide pressure radially to cement mortar when axial support power is provided, and its principle is equivalent to the conical surface of olive shape in the prior art, taper or doleiform branch sleeve; Make cement mortar encircle Ribbed Bar wherein more tightly, and increased the tensile strength of joint.When the tubular inner wall of branch sleeve is provided with above-mentioned plane of many groups or curved surface; Can obviously play increases joint tensile strength; Shorten sleeve grouting portion anchorage length of steel bar, reduce the length and the external diameter of branch sleeve, make joint branch sleeve of the present invention that the littler outside dimension of shorter length can be arranged than existing tubulose grouting joint; Reach the saving steel, the purpose that reduces cost.
Groove that this branch sleeve external surface is set or pit and convexity can adopt rolling or methods such as spinning or punching press or cutting or casting to process, the also combination of available said method, and substep is accomplished; Groove on the grouting portion inner hole wall or pit or convexity can adopt methods such as casting or cutting to process.
In addition; Adopt processes such as extruding, spinning, forging and pressing or punching press to go out described reduced diameter end; Make the enough isometrical steel pipes of wall thickness that waits of branch sleeve ability process; And the mode that need not adopt cut is made the branch sleeve of end reduced diameter, has practiced thrift material cost and cost of production.
Two of the technical scheme that the present invention adopts is:
A kind of cementation reinforcing bar jointing comprises connecting reinforcement, branch sleeve and cement mortar, and described connecting reinforcement is two, and wherein one is the threaded reinforcing bar in termination, and another root is common Ribbed Bar; Hole at an end of this branch sleeve is a screwed hole; This screwed hole is connected with the end of thread of this threaded reinforcing bar; This branch sleeve is a grouting portion except these other parts screwed hole, and described Ribbed Bar is inserted in the hole of this branch sleeve grouting portion, and combines to form a connector through the non-shrinkage cement mortar that is full of the sclerosis in both gaps; It is characterized in that: the external surface in the grouting portion of described branch sleeve is provided with groove; Grouting portion endoporus is a circular hole, on this inner hole wall, fin is arranged, and the groove of branch sleeve external surface is corresponding with the fin of inwall.
The groove of the grouting portion external surface of described branch sleeve is helicla flute or cannelure separately, and recess width is 5mm～40mm, and degree of depth 0.5mm～6mm, the cross section profile of groove are the combinations of circular arc or multistage broken line or broken line and circular arc; Fin cross section profile on the described branch sleeve grouting portion inner hole wall is one or more snippets circular arc, and the peak height of fin is greater than 0.2mm.
The material of described branch sleeve is seamless steel pipe, forging steel cylinder or punching press steel cylinder; Its profile is the cylinder with external diameter; Or the combination of various outer diameter cylinder, or the combination of cylinder and polygonal tube, or the combination of cylinder and conical tube, polygonal conically shaped or spherical awl tube.
Helical groove on the described branch sleeve grouting portion external surface or annular groove are no less than 1 circle; The quantity of the fin on the described branch sleeve grouting portion inner hole wall is identical with the groove of external surface.
The advantage that the present invention program two has is: the branch sleeve of this joint has adopted the seamless steel pipe that intensity is high, performance is good; Or the steel cylinder processed of forging or punching press, and the groove of the grouting portion external surface of branch sleeve can adopt rolling or spin-on process to process simultaneously with corresponding fin on inner hole wall.The rib structures of branch sleeve grouting portion inwall has identical effect with the fin or the screw thread of existing cementation joint branch sleeve inwall; And the dentation interlock that the outer concrete of the thread helix groove of its external surface or annular groove and sleeve forms, than the outer mass color disc and the concrete better effects if that combines of existing cementation joint branch sleeve.Therefore, the present invention significantly reduces the raw material consumption of branch sleeve through the reform of joint branch sleeve structure, branch sleeve material; And through appropriate design to branch sleeve structure and processing technology; Adopt rolling or spin-on process that the groove of this branch sleeve grouting portion external surface is accomplished in an operation at groove on the inner hole wall or convexity with corresponding simultaneously; Compare with the processing mode that the branch sleeve surfaces externally and internally is processed respectively, obviously practiced thrift operation, reduced process time; Reduce cost of production, improved production efficiency.
Scheme one is with the difference of scheme two: scheme one can adopt the combination of one or more technologies in the multiple process for machining and manufacturing such as rolling, spinning, cutting or forging, casting etc.; Accomplish the groove or the convexity of the surfaces externally and internally of branch sleeve by a step or above operation of two steps; The groove of branch sleeve external surface or convexity and grouting portion inwall convexity and groove need not one-to-one relationship, and this scheme can be accomplished the processing of the joint branch sleeve of the present invention of any structure form or dimensional parameters.Scheme two is special cases of scheme one; Only to the thin branch sleeve of the wall thickness of grouting portion; Can adopt rolling or spinning process, with the groove or the protruding situation about once processing simultaneously of branch sleeve surfaces externally and internally, its production efficiency is high; Can reduce material consumption, reduce the manufacturing cost of branch sleeve.The branch sleeve wall thickness is thicker; Behind rolling or the rotary pressing processing external surface, when convexity that the inwall of branch sleeve forms or groove size can not meet the demands, also need the groove or the convexity of processing grouting portion inwall specially with Cutting Process; Make the engagement effect of sleeve lining and cement mortar reach design object; At this moment, the groove of branch sleeve external surface or convexity and grouting portion inwall convexity and groove need not one-to-one relationship, the technological category of genus scheme one.
Description of drawings
Fig. 1 is the structural representation of the first embodiment of the present invention;
Figure 1A is the local enlarged diagram of Fig. 1;
Fig. 2 is the structural representation of the second embodiment of the present invention;
Fig. 3 is the structural representation of the third embodiment of the present invention;
Fig. 4 is the structural representation of the fourth embodiment of the present invention;
Fig. 5 is the structural representation of the fifth embodiment of the present invention;
Fig. 6 is the structural representation of the sixth embodiment of the present invention;
Fig. 7 is the structural representation of the seventh embodiment of the present invention;
Fig. 8 is the structural representation of the eighth embodiment of the present invention.
The specific embodiment
Referring to Fig. 1～Fig. 4, basic structure of the present invention comprises connecting reinforcement, branch sleeve 3 and cement mortar 4, and described connecting reinforcement has two, and wherein one is the threaded reinforcing bar 1 in termination, and another root is common Ribbed Bar 6.Hole at an end of this branch sleeve 3 is a screwed hole 33, and this screwed hole 33 is connected with the end of thread of this threaded reinforcing bar 1, and this branch sleeve 3 is a grouting portion except these other parts screwed hole 33.In the hole (i.e. the endoporus of grouting portion) of the other end of described Ribbed Bar 6 these branch sleeves 3 of insertion, and the connector of non-shrinkage cement mortar 4 combination formation through being full of the sclerosis in both gaps; On described branch sleeve 3 barrel adjacent, be provided with one and cross slurry hole 8, on the barrel of the end in the non-threaded hole of branch sleeve, be provided with an injected hole 5 with screwed hole 33 1 ends.
External surface in the grouting portion of this branch sleeve 3 is provided with helical groove or annular groove 31, on the inner hole wall of the grouting portion of this branch sleeve 3, is provided with the fin 32 corresponding with this groove 31.
An end that is provided with screwed hole 33 at described branch sleeve 3 can be the reduced diameter end.
Referring to embodiment shown in Figure 1; Be provided with the screwed hole 33 of a undergauge (diameter is less than grouting portion) at an end of this branch sleeve 3, and be connected with the end of thread of threaded reinforcing bar 1, described branch sleeve 3 materials are the steel cylinder that forges or punching press is processed; Or the steel cylinder processed of round steel or polygonal shaped steel cutting; Its profile is the cylinder with external diameter, or the polygonal tube, or the combination of cylinder and polygonal tube.The hole of this branch sleeve is a circular hole.Described groove 31 adopts rolling or spinning processing method to process with fin 32 in the grouting portion of sleeve.
Still as shown in Figure 1, the inner hole wall of the grouting portion of this branch sleeve 3 is provided with fin 32 (also can be pit in fact).In order to be unlikely in the size that guarantees tubular sleeve 3 under the excessive prerequisite; Increase the axial force between the inner hole wall of cement mortar 4 and branch sleeve 3, this fin 32 (or pit) need meet the following conditions: the described fin 32 of part (or pit) is provided with the anti-back slope 321 that prevents that the pairing Ribbed Bar 6 of this fin 32 (or pit) from deviating from from branch sleeve 3 at least as far as possible.This anti-back slope 321 can be the plane, also can be curved surface, and towards the screwed hole 33 1 ends inclination of this branch sleeve 3, and the angle K1 of the section Q1 that a bit locates arbitrarily on this anti-back slope 321 and the axis of this branch sleeve 3 is greater than 2 ° and less than 45 °.And these Ribbed Bar 6 pairing anti-back slope 321 projected length summations on the axis of branch sleeve 3 need just can meet design requirement more than or equal to the diameter of 0.5 times of connecting reinforcement 6.
In order to make jointing provided by the present invention not only can improve tensile property; Can also improve compressive property, the described fin 32 of part (or pit) is provided with and prevents that the resistance that the pairing connecting reinforcement 6 of this fin 32 (or pit) stretches into from entering slope 323 in branch sleeve 3 at least.This hinders into, and slope 323 can be the plane; It also can be curved surface; Tilt in contrast to an end of screwed hole 33 towards this branch sleeve 3, and, this hinder on the slope 323 into arbitrarily some angle K2 of the axis of the section Q2 at place and this branch sleeve 3 greater than 2 ° and less than 45 °.And these Ribbed Bar 6 pairing resistances are advanced the projected length summation of slope 323 on the axis of branch sleeve 3 and need just can be met design requirement more than or equal to the diameter of 0.5 times of connecting reinforcement 6.
The effect of entering slope 323 through above-mentioned anti-back slope 321 and resistance; Can be when cement mortar 4 sclerosis be expanded, the part of the radial pressure that cement mortar 4 is produced is converted into axial thrust load, improves the axial force between the inner hole wall of cement mortar 4 and branch sleeve 3; Not only can improve the tensile property of this jointing; Can also improve the compressive property of this jointing, strengthen the firm effect of connection, enlarge range of application.
And, on the inwall of above-mentioned branch sleeve,, the anti-back slope advances the slope with resistance except can being set simultaneously, also the anti-back slope can be set separately, and resistance can also be set separately enter the slope.
Referring to Fig. 2, embodiment shown in Figure 3, be provided with reduced diameter end 9 at an end of this branch sleeve 3, be provided with screwed hole 33 in this reduced diameter end 9, and be connected with the end of thread of threaded reinforcing bar 1.The material of described branch sleeve 3 is the steel cylinder that seamless steel pipe, forging or punching press are processed, and its profile is the combination of various outer diameter cylinder, or the combination of cylinder and conical tube or polygonal conically shaped or spherical awl tube.The hole of this branch sleeve is that circular hole is best, also can be the hole of other cross sectional shapes, like square hole or hex hole.The structure of described reduced diameter end 9 can adopt processes such as extruding, spinning, forging and pressing or punching press to form; Thus; The reduced diameter end 9 of branch sleeve 3 can process by enough isometrical steel pipes of wall thickness that waits with grouting portion; And need not adopt the mode of cut or forging type to form the branch sleeve that wall thickness does not wait, and practiced thrift material cost and cost of production, an end of this reduced diameter end 9 forms the screwed hole 33 of diameter less than grouting portion.Described groove 31 is to process simultaneously at the employing rolling of grouting portion or the spinning processing method of sleeve with fin 32.
The shape of cross section of this groove 31 is to decide according to the contour shape of rolling or spinner's chisel, and is the most commonly used with circular arc, also can be triangle, square or trapezoidal; Therewith correspondingly, the shape of cross section of this fin 32 is identical with the shape of cross section of this groove 31, and just size is less.
Referring to embodiment shown in Figure 4, the screwed hole 33 of branch sleeve 3 one ends is a taper thread, and branch sleeve 3 materials are the steel cylinder that forges or punching press is processed; Or the steel cylinder processed of round steel or polygonal shaped steel cutting; Its profile is the cylinder with external diameter, or the polygonal tube, or the combination of cylinder and polygonal tube.The hole of this branch sleeve is a circular hole; Boss and port boss that its grouting portion endoporus at first processes port with Cutting Process adopt rolling or spinning processing method to process described groove 31 and protruding 32 simultaneously in grouting portion with interior straight-cylindrical tubular construction then.Also can adopt the processing method of above two embodiment, the end employing rolling or the spinning processing method of this branch sleeve 3 are processed the reduced diameter end, process this taper thread hole 33 at this reduced diameter end place then.
The slurry hole 8 of crossing at described branch sleeve 3 two ends is unthreaded hole or screwed hole with injected hole 5.
The end of thread on the described threaded reinforcing bar 1 is the rolling straight thread of screw thread path less than bar diameter, or straight thread of processing behind the steel bar end jumping-up or taper thread, or the taper thread of the crowded rib reinforcement of reinforcing bar back processing, or the taper thread of directly processing.
Fig. 1, embodiment shown in Figure 4; Promptly do not have under the situation of reduced diameter end 9 at branch sleeve 3; This helical groove or annular groove 31 also can cover the whole length (i.e. the length of grouting portion partly adds the length part of upper screwed hole 33) of this branch sleeve 3 except the length of blanket grouting portion only.
Referring to Fig. 5, the fifth embodiment of the present invention, its basic structure comprise connecting reinforcement, branch sleeve 3 and cement mortar 4, and described connecting reinforcement has two, and wherein one is the threaded reinforcing bar 1 in termination, and another root is common Ribbed Bar 6.One end of this branch sleeve 3 is provided with screwed hole 33, and this screwed hole 33 is connected with the end of thread of this threaded reinforcing bar 1, and these branch sleeve 3 other ends then are provided with tubulose grouting portion.In the endoporus of the tubulose grouting portion of described Ribbed Bar 6 these branch sleeves 3 of insertion, and through being full of the connector of non-shrinkage cement mortar 4 combination formation in both gaps.On the cylindrical outside surfaces of described branch sleeve 3, be provided with groove (or protruding) 31, the tubulose grouting portion of branch sleeve 3 and cement mortar 4 contacted inwalls are provided with fin (or pit) 32.It should be noted that among the embodiment shown in Figure 5 that the groove that is provided with on the cylindrical outside surfaces of described branch sleeve 3 (also can be protruding) 31 has covered the whole length of this branch sleeve 3.
In above-mentioned the 5th embodiment; It is still protruding that groove is set on the cylindrical outside surfaces of described branch sleeve 3; With on the inwall of the tubulose grouting portion of described branch sleeve 3 fin or pit are set, do not have positive connection between the two, can freely select its combining form.Certainly; If on the cylindrical outside surfaces of described branch sleeve 3, groove is set; And on the inwall of the tubulose grouting portion of branch sleeve 3, fin is set, and the corresponding words in the position of groove and fin, described groove and fin can adopt rolling or spinning processing method to process simultaneously; Same reason; If on the cylindrical outside surfaces of described branch sleeve 3, convexity is set; And on the inwall of the tubulose grouting portion of branch sleeve 3, pit is set, and the corresponding words in position of protruding and pit, described convexity and pit also can adopt rolling or spinning processing method to process simultaneously.
Please consult the 6th embodiment shown in Figure 6 again; The characteristics of the jointing that this embodiment provided mainly are: the reduced diameter end 9 of this branch sleeve 3 is made as the ladder form; And set groove 31 on the cylindrical outside surfaces of described branch sleeve 3 does not have corresponding relation with the position of convexity 32 set on the inwall of the tubulose grouting portion of branch sleeve 3.
Please consult the 7th embodiment shown in Figure 7 again; The characteristics of the jointing that this embodiment provided mainly are: the reduced diameter end 9 of this branch sleeve 3 is made as the ladder form; And, set groove 31 on the cylindrical outside surfaces of described branch sleeve 3 is corresponding one by one with the position of fin 32 set on the inwall of the tubulose grouting portion of branch sleeve 3; Therefore, described groove and fin can adopt rolling or spinning processing method to process simultaneously.
Please consult the 8th embodiment shown in Figure 8 again, the characteristics of the jointing that this embodiment provided mainly are: the groove that is provided with on the cylindrical outside surfaces of described branch sleeve 3 (also can be protruding) 31 has covered the whole length of this branch sleeve 3; And; This groove 31 is helical grooves; Simultaneously, also shape in the shape of a spiral of set fin 32 on the inwall of the tubulose grouting portion of this branch sleeve 3, and fit like a glove with the position of this helical groove 31; Therefore, described helical groove and helical form fin can adopt rolling or spinning processing method to process simultaneously.
In above-mentioned all embodiment, set groove 31 on described branch sleeve external surface (or protruding), no matter in the axial direction still week all can be continuously upwards, also can be at interval.The slurry hole 8 excessively that on the tubulose grouting portion of described branch sleeve 3 barrel adjacent with screwed hole 33 ends, is provided with can be unthreaded hole or screwed hole; Grouting portion at described branch sleeve 3 inserts the injected hole 5 that is provided with on the barrel of mouth near Ribbed Bar, also can be unthreaded hole or screwed hole.
More than explanation is just illustrative for the purpose of the present invention; And nonrestrictive, those of ordinary skills understand, under the situation of spirit that does not break away from claim and limited and scope; Can make many modifications, variation or equivalence, but all will fall within protection scope of the present invention.
Claims (10)
1. a cementation reinforcing bar jointing comprises connecting reinforcement, metal system branch sleeve and cement mortar, and described connecting reinforcement is two, and wherein one is the threaded reinforcing bar in termination, and another root is common Ribbed Bar; End at this branch sleeve is provided with screwed hole; This screwed hole is connected with the end of thread of this threaded reinforcing bar; This branch sleeve other end is provided with tubulose grouting portion; Described Ribbed Bar is inserted in the endoporus of this tubulose grouting portion; And through being full of a connector of non-shrinkage cement mortar combination formation in both gaps, it is characterized in that: on the cylindrical outside surfaces of described branch sleeve, be provided with groove or convexity, the tubulose grouting portion of described branch sleeve and the contacted inwall of cement mortar are provided with fin or pit.
2. cementation reinforcing bar jointing according to claim 1 is characterized in that, groove or convexity on described branch sleeve external surface, this branch sleeve axially on be continuous or at interval; Groove or convexity on the described branch sleeve external surface upwards also are continuous or the interval in the week of this branch sleeve.
3. cementation reinforcing bar jointing according to claim 1 is characterized in that, groove or convexity on the tubulose inner hole wall of described branch sleeve, this branch sleeve axially on be continuous or the interval; Groove or convexity on the tubulose inner hole wall of described branch sleeve upwards also are continuous or the interval in the week of this branch sleeve.
4. cementation reinforcing bar jointing according to claim 1; It is characterized in that; At least described fin of part or pit are provided with the anti-back slope that prevents that this Ribbed Bar from deviating from from branch sleeve; The angle of the section of a bit locating arbitrarily on this anti-back slope and the axis of this branch sleeve is greater than 2 ° and less than 45 °, and the projected length summation of the pairing anti-back of this Ribbed Bar slope on the axis of branch sleeve is more than or equal to the diameter of 0.5 times of connecting reinforcement.
5. according to claim 1 or 4 described cementation reinforcing bar jointings; It is characterized in that; At least described fin of part or pit are provided with and prevent that the resistance that this Ribbed Bar stretches into from entering the slope in branch sleeves; This hinder on the slope into some angle of the axis of the section at place and this branch sleeve is greater than 2 ° and less than 45 ° arbitrarily, the diameter of the projected length summation of slope on the axis of branch sleeve more than or equal to 0.5 times of connecting reinforcement advanced in the pairing resistance of this Ribbed Bar.
6. cementation reinforcing bar jointing according to claim 1 is characterized in that, described branch sleeve profile is an a straight tubular or end end that is provided with screwed hole is provided with the reduced diameter end.
7. cementation reinforcing bar jointing according to claim 1 is characterized in that, on the tubulose grouting portion of the described branch sleeve barrel adjacent with the screw thread nose end, is provided with one and crosses the slurry hole; On the barrel of grouting portion near Ribbed Bar insertion mouth of described branch sleeve, be provided with an injected hole.
8. a cementation reinforcing bar jointing comprises connecting reinforcement, branch sleeve and cement mortar, and described connecting reinforcement is two, and wherein one is the threaded reinforcing bar in termination, and another root is common Ribbed Bar; Hole at an end of this branch sleeve is a screwed hole; This screwed hole is connected with the end of thread of this threaded reinforcing bar; This branch sleeve is a grouting portion except these other parts screwed hole, and described Ribbed Bar is inserted in the hole of this branch sleeve grouting portion, and combines to form a connector through the non-shrinkage cement mortar that is full of the sclerosis in both gaps; It is characterized in that: the external surface in the grouting portion of described branch sleeve is provided with groove; Grouting portion endoporus is a circular hole, on this inner hole wall, fin is arranged, and the groove of branch sleeve external surface is corresponding with the fin of inwall.
9. cementation reinforcing bar jointing according to claim 8; It is characterized in that; The groove of the grouting portion external surface of described branch sleeve is helicla flute or cannelure separately; Recess width is 5mm～40mm, and degree of depth 0.5mm～6mm, the cross section profile of groove are the combinations of circular arc or multistage broken line or broken line and circular arc; Fin cross section profile on the described branch sleeve grouting portion inner hole wall is one or more snippets circular arc, and the peak height of fin is greater than 0.2mm.
10. cementation reinforcing bar jointing according to claim 8; It is characterized in that; The material of described branch sleeve is seamless steel pipe, forges steel cylinder or punching press steel cylinder, and its profile is the cylinder with external diameter, or the combination of various outer diameter cylinder; Or the combination of cylinder and polygonal tube, or the combination of cylinder and conical tube, polygonal conically shaped or spherical awl tube.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101644515A CN102587587A (en) | 2011-01-14 | 2011-06-17 | Cement grouting steel bar connecting joint |
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| CN201120011096 | 2011-01-14 | ||
| CN201120011096.3 | 2011-01-14 | ||
| CN2011101644515A CN102587587A (en) | 2011-01-14 | 2011-06-17 | Cement grouting steel bar connecting joint |
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| CN102587587A true CN102587587A (en) | 2012-07-18 |
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| CN2011202056408U Expired - Lifetime CN202208996U (en) | 2011-01-14 | 2011-06-17 | Cement grout steel bar connector |
| CN2011101644515A Pending CN102587587A (en) | 2011-01-14 | 2011-06-17 | Cement grouting steel bar connecting joint |
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| CN104563397A (en) * | 2014-12-24 | 2015-04-29 | 中国建筑股份有限公司 | Extrusion semi-grouting reinforcement sleeve, connecting structure and construction method thereof |
| CN103452246B (en) * | 2013-07-09 | 2016-08-10 | 中国建筑股份有限公司 | The grouting deformed steel pipe box cylinder that the slurry anchor docking of a kind of reinforcing bar connects |
| CN107700756A (en) * | 2017-09-30 | 2018-02-16 | 合肥建工集团有限公司 | A kind of assembly of shear wall structure exterior wall reinforcing bar is partly in the milk attachment means |
| CN107893508A (en) * | 2017-11-10 | 2018-04-10 | 东莞理工学院 | A kind of and prefabricated components grout sleeve of concrete compatible deformation |
| CN108625537A (en) * | 2017-03-20 | 2018-10-09 | 建研科技股份有限公司 | Special-shaped grouting sleeve for connecting reinforcing steel bars and forming method thereof |
| CN110080466A (en) * | 2018-01-26 | 2019-08-02 | 中国建筑科学研究院有限公司 | Grouting sleeve and preparation method and application thereof |
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| CN202208996U (en) * | 2011-01-14 | 2012-05-02 | 中冶建筑研究总院有限公司 | Cement grout steel bar connector |
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| CN104963465B (en) * | 2015-07-07 | 2017-06-06 | 山东万斯达建筑科技股份有限公司 | A kind of network reinforcing bar connector and its construction method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10183864A (en) * | 1996-12-27 | 1998-07-14 | Fuji Bolt Seisakusho:Kk | Joint structure and connection method of deformed bar |
| CN201158906Y (en) * | 2008-02-29 | 2008-12-03 | 张向伟 | Reinforced bar coupling sleeve |
| CN201187120Y (en) * | 2008-04-29 | 2009-01-28 | 郝发义 | Reinforcing bar screwed connection sleeve |
| CN201660972U (en) * | 2009-12-31 | 2010-12-01 | 北京万科企业有限公司 | Novel cement grouting reinforcement connecting joint |
| CN202208996U (en) * | 2011-01-14 | 2012-05-02 | 中冶建筑研究总院有限公司 | Cement grout steel bar connector |
-
2011
- 2011-06-17 CN CN2011202056408U patent/CN202208996U/en not_active Expired - Lifetime
- 2011-06-17 CN CN2011101644515A patent/CN102587587A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10183864A (en) * | 1996-12-27 | 1998-07-14 | Fuji Bolt Seisakusho:Kk | Joint structure and connection method of deformed bar |
| CN201158906Y (en) * | 2008-02-29 | 2008-12-03 | 张向伟 | Reinforced bar coupling sleeve |
| CN201187120Y (en) * | 2008-04-29 | 2009-01-28 | 郝发义 | Reinforcing bar screwed connection sleeve |
| CN201660972U (en) * | 2009-12-31 | 2010-12-01 | 北京万科企业有限公司 | Novel cement grouting reinforcement connecting joint |
| CN202208996U (en) * | 2011-01-14 | 2012-05-02 | 中冶建筑研究总院有限公司 | Cement grout steel bar connector |
Non-Patent Citations (3)
| Title |
|---|
| 刘吉普等: "横纹槽管滚轧加工及强度研究", 《化工装备技术》, vol. 19, no. 3, 31 March 1998 (1998-03-31) * |
| 文美纯: "轧槽管机关的设计", 《湘潭大学自然科学学报》, vol. 16, no. 4, 31 December 1994 (1994-12-31) * |
| 魏铨森等: "螺旋槽管及其滚轧加工", 《流体机械》, no. 03, 31 March 1980 (1980-03-31) * |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103452246B (en) * | 2013-07-09 | 2016-08-10 | 中国建筑股份有限公司 | The grouting deformed steel pipe box cylinder that the slurry anchor docking of a kind of reinforcing bar connects |
| CN104563397A (en) * | 2014-12-24 | 2015-04-29 | 中国建筑股份有限公司 | Extrusion semi-grouting reinforcement sleeve, connecting structure and construction method thereof |
| CN108625537A (en) * | 2017-03-20 | 2018-10-09 | 建研科技股份有限公司 | Special-shaped grouting sleeve for connecting reinforcing steel bars and forming method thereof |
| CN107700756A (en) * | 2017-09-30 | 2018-02-16 | 合肥建工集团有限公司 | A kind of assembly of shear wall structure exterior wall reinforcing bar is partly in the milk attachment means |
| CN107893508A (en) * | 2017-11-10 | 2018-04-10 | 东莞理工学院 | A kind of and prefabricated components grout sleeve of concrete compatible deformation |
| CN110080466A (en) * | 2018-01-26 | 2019-08-02 | 中国建筑科学研究院有限公司 | Grouting sleeve and preparation method and application thereof |
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