CN104314314B - A kind of grouting connection construction method - Google Patents
A kind of grouting connection construction method Download PDFInfo
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- CN104314314B CN104314314B CN201410652838.9A CN201410652838A CN104314314B CN 104314314 B CN104314314 B CN 104314314B CN 201410652838 A CN201410652838 A CN 201410652838A CN 104314314 B CN104314314 B CN 104314314B
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Abstract
Grouting connection construction method of the present invention, for the connection of prefabricated concrete structure vertical reinforcement, comprise the following steps: first at the multiple grouting jockeys of one end of precast concrete to be connected pre-plugged, described grouting jockey is for being connected with the connecting reinforcement stretching out in lower component, then hoisting prefabricated concrete component, then makes grouting box dam; Then horizontal gap grouting, then the jockey that is in the milk grouting, the horizontal gap plugging grouting of grouting connection construction method of the present invention is connected and can within on the same day, carries out with the grouting of grouting jockey, thereby greatly improve the work efficiency that prefabricated components are installed, even in the winter time, grouting connection construction method of the present invention can be carried out under subzero temperature environment, and difficulty of construction is reduced, and operating efficiency improves.
Description
Technical field
The present invention relates to a kind of precast concrete connection construction technical field of prefabricated concrete structure structures,Especially a kind of prefabricated concrete structure vertical reinforcement connection construction method.
Background technology
The connection construction of the prefabricated components vertical reinforcement of prefabricated concrete structure grouting at present adopts two kinds of methods conventionally, 1,UNICOM's cavity pressure grouting method: after prefabricated components installation in position, will separate the water of formation between itself and lower component by cushion blockThe border of flush joint is with after encapsulant sealing, this horizontal joint as the UNICOM chamber of being in the milk, from the grouting jockey of a reinforcing barPlace or an injected hole reserved on the encapsulant of horizontal joint border pour into reinforcing bar connection cement-based grout in horizontal jointMaterial, so by many reinforcing bars be in the milk simultaneously connect method; 2, seat slurry grouting method: the position enclosing mould of first installing at memberOr other materials makes the cofferdam of horizontal joint, then build plastic state dry seat slurry at cofferdam Nei Dui, on the seat slurry that heap is built, showFace should be on the designed elevation of precast concrete bottom surface, then precast concrete lifting is put in place and be sitting in above-mentioned seat slurryIn material, then member is adjusted to level, vertical position, mix up rear fixing, after a slurry solidifies, more one by one on prefabricated componentsThe slip casting of each reinforcing bar grouting jockey. Above two kinds of methods Shortcomings all in practice of construction:
The cavity pressure grouting of the first UNICOM, the spillage problem while being difficult to overcome grouting, UNICOM chamber is closed construction, must adoptWith pressure grouting, as poorly sealed around horizontal joint or the withstand voltage deficiency of encapsulant just there will be spillage problem, once UNICOM chamberSpillage, directly affects the degree of filling of grouting material in reinforcing bar grouting joint, affects the reinforcing bar grouting quality of connection of these prefabricated components, mainWant reason to be: 1, assembly concrete shear wall structure, the lower component that precast shear wall member connects is cast-in-place concreteFloor, the surface of cast-in-place concrete floor everywhere high point is difficult in same level, and therefore precast shear wall member is arranged onOn this surface, its bottom surface is adjusted to after level, and the height in cast-in-situ floor upper surface and gap, precast shear wall member lower surface isInconsistent, therefore, when the encapsulants such as elastic rubber strip or PE rod or sponge strip for horizontal joint, precast shear wall lower end, topFace is pressed in below concrete surface, while sealing with the frictional force of upper and lower concrete structural surface by it, when being in the milk to reinforcing barPerfusion grouting material in jockey, grouting pressure reaches when larger, and the slurry of perfusion will be by above-mentioned encapsulant and concrete tableFace frictional force smaller part backs down and spills, and causes reinforcing bar grouting quality of connection problem, forms potential safety hazard. Find spillage problemAfter, have to adopt the treatment measures such as supplementary irrigation slurry, but its work efficiency is very low, affects the construction speed of structure; When horizontal joint adoptsWhen special joint seal cement pedestal slurry sealing, although effect and the reliability of sealing significantly improve, need the long period etc.Treat that joint seal material hardens and reaches working strength, therefore also has considerable influence to structure installation speed; 2, assembled coagulationSoil frame structure, when the post node below prefabricated post is cast-in-place, the gap of cast-in-place concrete upper surface and prefabricated post lower surfaceIdentical with fabricated shear wall constructional aspect, there is uneven problem in horizontal joint clearance height, and structural column sectional dimension is no more thanWhen 100cm × 100cm, a point storehouse is not done in chamber conventionally by horizontal joint grouting UNICOM, can be large but the UNICOM of its bottom grouting cavity area is mostThe single storehouse maximum area allowing in UNICOM's grouting chamber of shear wall, also can run into the situation that grouting pressure is higher, once grouting materialAny place that has washed surrounding band open, the grouting of this prefabricated post fail, and must open the seat slurry of sealing, flushes outPour into whole grouting materials, then resealed and be in the milk, greatly affected efficiency of construction; The precast construction post that size is larger, need adoptDoing multiple grouting UNICOMs chamber by a point storehouse mode, is also very high to the requirement in horizontal seal and point storehouse, and workload is larger, construction costHigh. In a word, although once can being in the milk, UNICOM's chamber grouting construction connects multiple jockeys, to encapsulant, sealing meansAlso be acid test Deng having very high requirement, the management to China's construction and peopleware, occur spillage problem, noOnly affect integral construction efficiency, and reluctant spillage syndeton will cause hidden danger of quality.
, there is the lower and member bottom gap problem of work efficiency in the second seat slurry grouting method: 1, work efficiency problem, and due to seat slurry methodBe first to have piled the seat slurry of plastic state dry or the seat slurry of perfusion mobility, then prefabricated components are installed, dry seat slurry existsMember should keep plasticity before installing, and the seat slurry of mobility should keep flowing, and can not solidify or harden, and therefore the construction of seat slurry mustMust be good fit with the lifting work of prefabricated components, mix the lifting time of starching with seat slurry construction palpus combination member and carry out, a slurryConstruction is restricted by lifting components work, and work efficiency is low, does not meet the feature that modern precast construction construction is fast, work efficiency is high; 2, structurePart bottom gap and exhausting problem, prefabricated components will make the bottom surface of member and horizontal plane fall to being sitting in parallel seat slurry while installationOn material, difficulty is very big, therefore for dry seat slurry, after member is sitting on a slurry, then adjusts prefabricated components its bottom surface is reachedTo parallel with horizontal plane, and dry seat slurry can not flow, once such adjustment, member lower surface and the seat slurry of shapingMust there is gap in material upper surface; For mobility seat slurry, when member drops to pulp surface, meeting when falling speed is very fastThe air of the recess of member bottom dabbing or undisguised face can not fully be discharged, and basal surface may occur that part chokes with resentment like this,If the falling speed of conscientious control member in the time of contact base slurry, must affect member installation rate, therefore seat slurry method groutingConstruction, work efficiency is lower, and exists between member bottom and seat slurry layer and occur gap or the quality risk of choking with resentment.
Summary of the invention
The application's goal of the invention is to solve current above-mentioned technical problem, and provide one can be fast, efficient, can connectContinuous operation and reduce the engineering time, improve the grouting connection construction method of construction quality.
In order to complete the application's goal of the invention, the application by the following technical solutions:
Grouting connection construction method of the present invention, for the connection of prefabricated concrete structure vertical reinforcement, described groutingConnection construction method comprises the following steps:
1), at the multiple grouting jockeys of one end of precast concrete to be connected pre-plugged, described grouting connectsDevice is for being connected with the connecting reinforcement stretching out in lower component;
2) hoisting prefabricated concrete component: after described precast concrete is in place, described precast concreteAnd between described lower component, leave horizontal gap, the connecting reinforcement simultaneously stretching out in lower component is plugged on described grouting and connectsIn device;
3) make grouting box dam: make grouting box dam in described horizontal gap periphery, the dam body of described grouting box dam at leastSome is located at outside the downward vertical view field of described precast concrete, is arranged on described precast concreteThe grouting mouth that dam body outside downward vertical view field and the outer rim institute region of described view field are horizontal gap orExhaust outlet; Or within dam body is all positioned at the downward vertical view field of described precast concrete, on dam body, establish groutingMouth and exhaust outlet, the upper surface any point of described grouting box dam dam body is all not less than the lower surface of described precast concrete.
4) horizontal gap grouting: water grouting material by described grouting mouthful in described horizontal gap, until described groutingThe upper surface of the grouting material that each exhaust outlet of box dam flows out is not less than described precast concrete lower surface;
5) grouting jockey grouting: described grouting jockey has the grout hole and the plasma discharge hole that are in communication with the outside,After in described horizontal gap, the grouting material of perfusion solidifies, fill to described connection by the grout hole of described grouting jockey belowPut the grouting material that interior perfusion connects for reinforcing bar, until described grouting material flows out from the plasma discharge hole of described grouting jockey topAfter, with the stifled described grout hole of plugging material plug, and then successively other grouting jockeys are in the milk, until all groutingJockey all completes grouting.
Grouting jockey of the present invention is reinforced bar sleeve grouting jockey, described reinforced bar sleeve grouting jockeySleeve in the connecting reinforcement of pegging graft in described lower component, described connecting reinforcement and described sleeve are matched in clearance, described coverOn the cylinder lateral wall of cylinder, establish described grout hole and plasma discharge hole, described grout hole and plasma discharge hole stretch out and are connected to described prefabricatedThe outer surface of concrete component sidewall.
Being subject in one end of the sleeve of reinforced bar sleeve grouting jockey of the present invention and described precast concretePower reinforcing bar is fixedly connected with, and the sleeve other end of reinforced bar sleeve grouting jockey is established grouting chamber, and the described connecting reinforcement of pegging graft, instituteStating sleeve grouting chamber is fixedly connected with described connecting reinforcement by the grouting material being filled in sleeve grouting chamber.
Grouting chamber is all established at reinforced bar sleeve grouting of the present invention jockey two ends, and the grouting chamber of one end is pegged graft described prefabricatedSteel bar stress in concrete component, the grouting chamber of one end described connecting reinforcement of pegging graft in addition, described steel bar stress be connected steelMuscle is all fixedly connected with described sleeve grouting chamber by described grouting material.
Grouting jockey of the present invention is sleeve grouting anchor connection structure or preformed hole fixed connection structure, described inThe sleeve of sleeve grouting anchor connection structure is anchored in precast concrete, establishes grouting chamber in sleeve, and described preformed hole is solidPrefabricated profiled hole when the grouting chamber of determining syndeton is precast concrete production, described grouting chamber socket connection reinforcing bar,Described grouting chamber is fixedly connected with connecting reinforcement by the grouting material being filled in grouting chamber.
In the present invention in described step 4) in, before horizontal gap perfusion grouting material, first in described horizontal gapCast clear water, the upper surface of wetting described precast concrete lower surface and lower component, then discharge, and treats lower componentUpper surface without ponding after, then pour into grouting material in described horizontal gap.
In the present invention in described step 4) in, when the temperature of the installation environment of described precast concrete is lower than Celsius zeroWhile spending, before described horizontal gap perfusion grouting material, the contact surface while using heating apparatus to described grouting material grouting addsHeat, until the temperature of the contact surface in described grouting material when grouting reaches above zero again to described horizontal gap grouting.
In the present invention in the time being in the milk connection construction, described step 3) operation can be placed on described step 2) enter beforeOK.
Grouting connection construction method of the present invention is compared with prior art distinguished and is:
(1) the box dam operation of being in the milk after precast concrete is installed, can carry out continuously, is not subject to precast concreteThe time restriction of lifting component, after all precast concretes are installed and fixed, the cofferdam work of multiple members can be togetherOr carry out continuously, not affected by the lifting of other member, work is convenient to carry out, and speed of application is fast, efficiency is high;
(2) multiple material all can be used for making grouting box dam, cost low and make simple, due to horizontal gap grouting beUnder the environmental pressure of grouting box dam, complete, than the low several times of operating pressure of usual pressure grouting, like this to the requirement of box dam alsoLow, and can use the elastomeric material of recycling, or the dry mortar of rapid shaping, even if find spillage in the time of perfusion,Also can mend at any time stifledly, therefore, the shutoff of horizontal gap grouting material and box dam work is simple, fast, save material;
(3) grouting box dam be convenient to open and seal, and can according to real needs design application water filling be infiltrated with lower coagulationThe box dam structure of soil structured body surface treatment, is conducive to grouting material and flows and reduce concrete surface water suction and the grouting material that causesShrink, ensure that horizontal gap is filled closely knit;
(4) grouting of traditional reinforcing bar connects technique and uses the grouting material of can flowing time growing, and has the filling of this featureSlurry setting time is also longer, and under normal temperature, first day does horizontal joint joint seal or seat slurry will wait it to solidify, harden, when joint seal or seatWhen slurry reaches reinforcing bar grouting connection construction desirable strength, just can do grouting connection construction, within general so at least 2 days, just can completeGrouting connection construction. Because grouting mouth and the exhaust outlet size of construction technology horizontal joint of the present invention all can be done greatlyr, fill withSlurry difficulty is low, can use fast gravity die grouting material, and under normal temperature environment, the horizontal joint latter 2 hours grouting materials that are in the milk just can solidify, and reachTo reinforcing bar grouting connection construction desirable strength, just can carry out subsequently the grouting construction of reinforcing steel bar connecting device, greatly shorten horizontal jointIn the time interval between gap grouting and reinforcing bar grouting jockey grouting construction, just can complete grouting connection construction in one day,And the grouting one by one of grouting jockey, the quality of grouting also can be significantly improved, thereby greatly improves precast concrete structureWork efficiency and quality of connection that part is installed.
(5), when the following environment of zero centigrade is constructed, traditional grouting process need to enter the component surface of grouting material contactGo and heat for a long time and insulation, after joint seal seat slurry or a seat slurry are carried out, reach reinforcing bar connection grouting construction at it required strongAfter degree, also to connect to reinforcing bar each contact-making surface heating and insulation of grouting material, after the grouting of reinforcing bar muscle grouting jockey,Continue long-time heating insulation, construction overall process heating power consumption is large, and the time is long, and cost is high, and temperature control point is many, management expectancyHeight, implements difficulty very large. Grouting connection construction method of the present invention, can be used the fast gravity die grouting material of low temperature, and component surface addsHeat, horizontal joint perfusion, equal of temperature retention time significantly shorten, constructability, and cost is low, work efficiency is high, is the grouting of low temperature environment reinforcing barConnection construction provides a kind of enforceable technical scheme.
Brief description of the drawings
Fig. 1 is the front grouting of the precast concrete lifting connection construction method schematic diagram of the present embodiment;
Fig. 2 is the precast concrete lifting post-grouting connection construction method schematic diagram of the present embodiment;
Fig. 3 is the full grouting branch sleeve schematic diagram of the grouting jockey of the present embodiment;
Fig. 4 is the sleeve grouting anchor connection structural representation of the grouting jockey of the present embodiment;
Fig. 5 is the preformed hole grouting anchor connection structural representation of the grouting jockey of the present embodiment; Fig. 6 is this enforcementThe preformed hole slurry anchor bridging arrangement schematic diagram of the grouting jockey of example;
Fig. 7 is the structural representation that the grouting box dam of the present embodiment is all positioned at precast concrete periphery;
Fig. 8 is the structural representation that the grouting box dam two ends of the present embodiment are positioned at precast concrete periphery;
Fig. 9 is the structural representation that three positions of grouting box dam of the present embodiment are positioned at precast concrete periphery;
Figure 10 is that the grouting box dam of the present embodiment is all positioned at the structure within the vertical view field of precast concreteSchematic diagram;
Figure 11 is the structural representation of the grouting box dam that installs heat-insulation layer additional of the present embodiment;
Figure 12 is the grouting connection construction method schematic diagram of the present embodiment precast concrete of installing heat-insulation layer additional.
Reference numeral: 1-precast concrete, the 2-jockey that is in the milk, 21-grout hole, 22-plasma discharge hole, 23-groutingChamber, 3-connecting reinforcement, 4-lower component, 5-exhaust outlet, 6-horizontal gap, the 7-box dam that is in the milk, 8-is in the milk mouthful, 9-heat-insulation layer and10-insulation material.
Detailed description of the invention
Below in conjunction with accompanying drawing, the detailed description of the invention of grouting connection construction method of the present invention is described:
Embodiment:
As shown in Fig. 1-6, the grouting connection construction method of the present embodiment, vertically connects for precast concrete, mainComprise the following steps:
1), at the multiple grouting jockeys 2 of one end of precast concrete to be connected 1 pre-plugged, grouting connects dressPut 2 for being connected with the connecting reinforcement 3 stretching out in lower component 4.
Grouting jockey 2 in the present embodiment can be half grouting branch sleeve or be entirely in the milk branch sleeve or itsHis syndeton of being in the milk, the connecting reinforcement 3 in the interior grafting lower component 4 in grouting chamber 23 of grouting jockey 2, connecting reinforcement 3With grouting chamber 23 be matched in clearance, on the sidewall in chamber 23 of being in the milk, establish grout hole 21 and plasma discharge hole 22, grout hole 21 and plasma discharge hole 22Stretch out and be connected to the outer surface (referring to Fig. 1 and Fig. 2) of precast concrete 1 sidewall, wherein mediatingThe grout hole 21 of grouting jockey 2 and plasma discharge hole 22 are the outer surfaces (in figure that lead to precast concrete by conduitNot shown). When reinforced bar sleeve grouting jockey 2 is half grouting branch sleeve, in one end of sleeve and precast concrete 1Steel bar stress be fixedly connected with, such as be spirally connected (referring to Fig. 1), the other end is sleeve grouting chamber 23, socket connection reinforcing bar 3, sleeveGrouting chamber 23 is fixedly connected with connecting reinforcement 3 by the grouting material being filled in grouting chamber 23; Reinforced bar sleeve grouting jockey 2During for full grouting branch sleeve (referring to Fig. 3), the stressed steel in the grouting chamber 23 grafting precast concretes 1 of sleeve topMuscle, the grouting chamber 23 socket connection reinforcing bars 3 of sleeve below, steel bar stress and connecting reinforcement 3 are all by sleeve grouting chamber 23Grouting material be fixedly connected with;
Grouting jockey 2 in the present embodiment can also be sleeve grouting anchor connection structure, and sleeve itself is by anchoringIn precast concrete 1 (referring to Fig. 4), the grouting chamber 23 socket connection reinforcing bars 3 of sleeve, the grouting chamber 23 of sleeve is by filling withNote is fixedly connected with connecting reinforcement 3 to the grouting material in grouting chamber 23.
Grouting jockey 2 in the present embodiment can also be preformed hole fixed connection structure, specifically can be divided into two kinds: pre-The grouting anchor connection structure of boxing out or preformed hole slurry anchor bridging arrangement, grouting jockey 2 is preformed hole grouting anchor connection knotWhen structure (referring to Fig. 5), grouting chamber 23 be precast concrete 1 while producing in concrete prefabricated profiled especially hole, hole wallFor the concrete of prefabricated components, grouting chamber 23 socket connection reinforcing bars 3, grouting chamber 23 is by being filled into the grouting material in grouting chamber 23Be fixedly connected with connecting reinforcement 3; When reinforced bar sleeve grouting jockey 2 is starched anchor bridging arrangement for preformed hole (referring to Fig. 6), prefabricatedSteel bar stress in concrete component 1 is anchored at a side in grouting chamber 23 in the time of Prefabrication, and grouting chamber 23 is prefabricated coagulationsSoil member 1 while producing in concrete prefabricated profiled especially hole, the concrete that hole wall is prefabricated components, grouting chamber 23 companies of pegging graftConnect reinforcing bar 3, grouting chamber 23 is fixedly connected with connecting reinforcement 3 by the grouting material being filled in grouting chamber 23.
2) as illustrated in fig. 1 and 2, hoisting prefabricated concrete component 1: after precast concrete 1 is in place, prefabricated coagulationBetween soil member 1 and lower component 4, leave horizontal gap 6, be plugged on filling by the connecting reinforcement 3 stretching out in lower component 4 simultaneouslyIn slurry jockey 2, concrete operations are as follows:
Position and the length of before lifting, first checking the connecting reinforcement 3 that rectangular structure plate stretches out, should meet designing requirement, steelMuscle axial location can be checked template detection with reinforcement location, can entangle reinforcing bar with steel pipe and adjust when reinforcing bar eccentric axis is overproofWhole, reinforcing bar length must be within the scope of design length, and rebar surface is clean, without serious corrosion, without adhesive matter, checks prefabricated mixed simultaneouslyWhether the base surface in solidifying native member 1 lower horizontal gap 6 clean, without foreign material such as greasy dirts, then hoisting prefabricated concrete component 1,In order to make to leave horizontal gap 6 between precast concrete 1 and lower component 4, can on lower component 4 horizontal planes, placeLip block, lip block quantity and bearing capacity should guarantee to support the weight of precast concrete 1 (conventionally lip block is adoptedWith metallic article), in addition, also can use other height-adjustable adjustable support member as screw rod or wedge shape parallels etc., supportThereby live precast concrete 1 and reserve the horizontal gap 6 that about 20mm is high, it is prefabricated that when lifting, connecting reinforcement 3 should be inserted into topIn the grouting chamber 23 of the grouting jockey 2 of concrete component 1, after lifting, regulate adjustable supports cushion block or precast concreteThe Special support instrument of member 1 side, makes the horizontal and vertical degree of precast concrete 1 all need to meet the requirements, simultaneously belowThe connecting reinforcement 3 that member 4 stretches out is plugged in grouting jockey 2, and the reinforcing bar length of inserting grouting jockey 2 meets connectionDesigning requirement.
3) as Fig. 7-11, make grouting box dam 7: make grouting box dam 7 in horizontal gap 6 peripheries, the dam body of grouting box dam 7Have at least a part to be located at outside the downward vertical view field of precast concrete 1, be arranged on precast concrete 1 toUnder vertical view field outside dam body and the outer rim institute region of view field be grouting mouth 8 or the exhaust of horizontal gap 6Mouth 5; Or within dam body is all positioned at the downward vertical view field of precast concrete 1, on dam body, establish grouting mouthfuls 8 and rowGas port 5, the upper surface any point of grouting box dam 7 dam bodys is all not less than the lower surface of precast concrete 1.
Grouting box dam 7 can be the dam body that four sides surrounds, and can be simultaneously also encapsulant or insulation material 10, in additionThree grouting box dams 7 (referring to Figure 11) that adopt dam body to surround.
4) horizontal gap 6 is in the milk: by grouting mouthfuls 8 to the interior pouring grouting material of horizontal gap 6, until grouting box dam 7 is eachThe upper surface of the grouting material that individual exhaust outlet 5 flows out is not less than precast concrete 1 lower surface, grouting material can adopt high strength,Shrinkage-free strength cement-based grouting material;
Preferably, in step 4) in, before pouring into grouting material to horizontal gap 6, can be first to the interior cast of horizontal gap 6Clear water, the upper surface of wetting precast concrete 1 lower surface and lower component 4, then discharges, and treats the upper table of lower component 4Face without ponding after, then to the interior perfusion grouting material of horizontal gap 6, the method for removing ponding has: absorption, volatilization and air-blowing etc.
In addition, in step 4) in, if the temperature of the installation environment of precast concrete 1 during lower than zero centigrade,Pour into before grouting material to horizontal gap 6, the contact surface while using the heating apparatus such as air-heater, electric blanket to be in the milk to grouting material addsHeat, is in the milk to horizontal gap 6 until the temperature of the contact surface in grouting material when grouting reaches above zero again, keeps filling with after groutingMore than the temperature that slurry temperature specifies in product instructions for use (as 5 DEG C or 10 DEG C), until the compression strength of grouting material reachesAfter 5MPa is above, just allow grouting material temperature to drop to subzero.
5) grouting jockey grouting: grouting jockey 2 has the grout hole 21 and the plasma discharge hole 22 that are in communication with the outside,After the grouting material of horizontal gap 6 interior perfusions solidifies, pour in jockey by the grout hole 21 of grouting jockey 2 belowsThe grouting material connecting for reinforcing bar, until grouting material is from flow out in the plasma discharge hole 22 of grouting jockey 2 tops, uses plugging materialThe stifled grout hole 21 of plug, and then successively other grouting jockeys 2 are in the milk, until all grouting jockeys 2 are wholeComplete grouting.
As shown in FIG. 11 and 12, if the precast concrete in the present embodiment 1 is provided with heat-insulation layer 9, below structureHeat-insulation layer 9 upper surfaces of part 4 are placed the insulation material 10 with elasticity and heat insulation function, and then hoisting prefabricated concrete component arrivesOn lip block, precast concrete is installed to after assigned position, between precast concrete and lower component 4, has waterFlush joint gap 6, the precast concrete 1 that is provided with heat-insulation layer 9 is pressed the elastic heat preserving material that is placed on lower component 4 upper surfacesContracting, the upper and lower surface of insulation material 10 is adjacent to respectively the upper and lower surface of lower component 4 and precast concrete 1, forms insulationBand is plugged in grouting jockey by the connecting reinforcement 3 stretching out in lower component 4 simultaneously, then passes through adjustment meansThe Special support instrument of side or the adjustable supports cushion block of bottom, the perpendicularity of adjustment precast concrete 1, meets and wants to itAfter asking, at thermal-insulating sealing band (referring to Figure 12) thus periphery build dam body surround grouting box dam 7, thermal-insulating sealing band is as groutingA part for dam body, grouting mouth is identical with said method with the setting of exhaust outlet.
In construction, step 3) operation can be placed on step 2) carry out before, other construction methods and operation are constant.
More than describing is explanation of the invention, is not the restriction to invention, and limited range of the present invention is referring to rightRequirement, without prejudice to spirit of the present invention in the situation that, the present invention can do any type of amendment.
Claims (8)
1. a grouting connection construction method, for the connection of prefabricated concrete structure vertical reinforcement, is characterized in that: described inGrouting connection construction method comprises the following steps:
1) at the multiple grouting jockeys of one end of precast concrete to be connected pre-plugged, described grouting jockeyFor being connected with the connecting reinforcement stretching out in lower component;
2) hoisting prefabricated concrete component: after described precast concrete is in place, described precast concrete and instituteState between lower component and leave horizontal gap, be plugged on described grouting by the connecting reinforcement stretching out in lower component simultaneously and connect dressIn putting;
3) make grouting box dam: make grouting box dam in described horizontal gap periphery, the dam body of described grouting box dam has one at leastPart is located at outside the downward vertical view field of described precast concrete, is arranged on described precast concrete downwardVertical view field outside dam body and be horizontal gap grouting mouth or the exhaust of the outer rim institute region of described view fieldMouthful; Or within dam body is all positioned at the downward vertical view field of described precast concrete, on dam body, establish grouting mouthful andExhaust outlet, the upper surface any point of described grouting box dam dam body is all not less than the lower surface of described precast concrete;
4) horizontal gap grouting: water grouting material by described grouting mouthful in described horizontal gap, until described grouting box damThe upper surface of the grouting material that flows out of each exhaust outlet be not less than described precast concrete lower surface;
5) grouting jockey grouting: described grouting jockey has the grout hole and the plasma discharge hole that are in communication with the outside, describedAfter the grouting material of perfusion solidifies in horizontal gap, the grout hole by described grouting jockey below is in described jockeyThe grouting material that perfusion connects for reinforcing bar, until described grouting material is used from flow out in the plasma discharge hole of described grouting jockey topPlugging material plug blocks up described grout hole, and then successively other grouting jockeys is in the milk, until all grouting connectsDevice all completes grouting.
2. grouting connection construction method according to claim 1, is characterized in that: described grouting jockey is reinforcing bar coverCylinder grouting jockey, the connecting reinforcement of pegging graft in described lower component in the sleeve of described reinforced bar sleeve grouting jockey,Described connecting reinforcement and described sleeve are matched in clearance, establish described grout hole and plasma discharge hole, institute on the cylinder lateral wall of described sleeveState the outer surface that grout hole and plasma discharge hole stretch out and be connected to described precast concrete sidewall.
3. grouting connection construction method according to claim 2, is characterized in that: one end of described sleeve and described prefabricatedSteel bar stress in concrete component is fixedly connected with, and the other end is established grouting chamber the described connecting reinforcement of pegging graft, the filling of described sleeveSlurry chamber is fixedly connected with described connecting reinforcement by the grouting material being filled in sleeve grouting chamber.
4. grouting connection construction method according to claim 2, is characterized in that: described reinforced bar sleeve grouting jockeyTwo ends all establish grouting chamber, the steel bar stress of pegging graft in described precast concrete in the grouting chamber of one end, the in addition filling of one endThe slurry chamber described connecting reinforcement of pegging graft, described steel bar stress and connecting reinforcement are all consolidated by described grouting material and the described sleeve chamber of being in the milkFixed connection.
5. grouting connection construction method according to claim 1, is characterized in that: described grouting jockey is that sleeve is filled withSlurry anchor connection structure or preformed hole fixed connection structure, the sleeve of described sleeve grouting anchor connection structure is anchored at prefabricated mixedIn solidifying native member, establish grouting chamber in sleeve, the grouting chamber of described preformed hole fixed connection structure is that precast concrete is producedTime prefabricated profiled hole, described grouting chamber socket connection reinforcing bar, described grouting chamber by be filled into the grouting material of grouting in chamber withConnecting reinforcement is fixedly connected with.
6. according to the grouting connection construction method described in claim 1,2,3,4 or 5, it is characterized in that: in described step 4) in,Before horizontal gap perfusion grouting material, first in described horizontal gap, pour into a mould clear water, wetting described precast concreteThe upper surface of lower surface and lower component, then discharges, after the upper surface of lower component is without ponding, then to described horizontal gapInterior perfusion grouting material.
7. according to the grouting connection construction method described in claim 1,2,3,4 or 5, it is characterized in that: in described step 4) in,When the temperature of the installation environment of described precast concrete is during lower than zero centigrade, to described horizontal gap perfusion grouting materialBefore, the contact surface heating while using heating apparatus to the grouting of described grouting material, until the contact table when grouting of described grouting materialThe temperature of face reaches above zero again to described horizontal gap grouting.
8. according to the grouting connection construction method described in claim 1,2,3,4 or 5, it is characterized in that: in the connection of being in the milkWhen construction, described step 3) operation be placed on described step 2) carry out before.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410652838.9A CN104314314B (en) | 2014-11-17 | 2014-11-17 | A kind of grouting connection construction method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410652838.9A CN104314314B (en) | 2014-11-17 | 2014-11-17 | A kind of grouting connection construction method |
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| Publication Number | Publication Date |
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| CN104314314A CN104314314A (en) | 2015-01-28 |
| CN104314314B true CN104314314B (en) | 2016-05-11 |
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| CN201410652838.9A Active CN104314314B (en) | 2014-11-17 | 2014-11-17 | A kind of grouting connection construction method |
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| JP4852378B2 (en) * | 2006-09-04 | 2012-01-11 | 合同製鐵株式会社 | Reinforced joint half sleeve, joint using the half sleeve, and precast reinforced concrete molded product |
| CN102392511B (en) * | 2011-10-24 | 2013-08-28 | 上海城建市政工程（集团）有限公司 | Sleeve pressure type grouting construction method for steel reinforcement connection |
| CN102425310B (en) * | 2011-12-15 | 2014-02-19 | 中国二十二冶集团有限公司 | Assembly-type residential shear wall structural wall body vertical connection construction method |
| CN203247697U (en) * | 2013-05-16 | 2013-10-23 | 叶新 | Pre-cast concrete structural member capable of being longitudinally connected |
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