CN103590510B - The fixed connection method of embedded bar in fabricated construction and cast-in-place structural - Google Patents
The fixed connection method of embedded bar in fabricated construction and cast-in-place structural Download PDFInfo
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- CN103590510B CN103590510B CN201310613719.8A CN201310613719A CN103590510B CN 103590510 B CN103590510 B CN 103590510B CN 201310613719 A CN201310613719 A CN 201310613719A CN 103590510 B CN103590510 B CN 103590510B
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Abstract
The invention provides the fixed connection method of embedded bar in fabricated construction and cast-in-place structural, relate to the link technique field of fabric structure.In method of attachment for existing precast shear wall, adopt steel bushing plate spacer bars inaccurate, sleeve and steel reinforcement abutting joints are misplaced comparatively greatly, cause the problem that precast shear wall and lower floor body of wall cannot accurately dock.Method: one, provide the wooden cage plate that is provided with some datum holes, datum hole can be corresponding with the position of precast reinforced concrete construction inner sleeve; Two, form a chamber, fix wooden cage plate at chamber top needing the position of cast-in-place concrete structure to carry out template support, some embedded bars are positioned through wooden cage plate implant cavity indoor; Three, to concreting in chamber, the wooden cage plate of rear dismounting to be hardened, obtained cast-in-place concrete structure; Four, dock and fix precast reinforced concrete construction and cast-in-place concrete structure; Five, the gap of shutoff body of wall junction completes assembling construction.
Description
Technical field
The present invention relates to the link technique field of fabric structure, the fixed connection method particularly in a kind of precast reinforced concrete construction and cast-in-place concrete structure between embedded bar.
Background technology
Precast reinforced concrete construction (abbreviation fabricated construction) take prefabricated units as main bearing member, through the concrete structure assembled or be formed by connecting.It can reduce the wet trades such as poured in place concrete, improves assemblingization degree, and then the reduction of erection time.In high-building construction process, be the External Force Actings such as opposing earthquake, need that adjacent precast reinforced concrete construction is connected as a whole, be convenient to transmit vertical counter-force and horizontal shear, ensure the safety of building.
Application number is 201210378398.3, name is called that assembly concrete Frame-Shear Wall splits the technical scheme of splicing structure and assembled method of attachment, the method of attachment of its to the effect that precast shear wall vertical reinforcement (core muscle), particularly at precast shear wall lower end embedded sleeve barrel, the reinforcing bar nose section tabling stretched out with lower floor wall, is connected as one by perfusion mortar and lower floor's wall.In technique scheme, usually cast-in-place band is set on lower floor's wall, and utilizes steel bushing plate temporary fixed embedded bar in cast-in-place band, then precast shear wall is assembled in cast-in-place bringing.But when using steel bushing plate at the construction field (site), do not have suitable component to be connected with steel bushing plate, the position of steel bushing plate is not easily fixed, and makes embedded bar locate not accurate enough.What is more important, the spacing of adjacent two embedded bars is approximately 350mm, general disposable pre-buried quantity is no more than 12, and the diameter of precast shear wall lower sleeve is less, be about 40mm, when adopting docking sleeve mode to connect precast shear wall, so many embedded bar, if sleeve and embedded bar misplace, deviation is greater than ± 5mm time, just can not disposablely well lift successfully, simultaneously embedded bar tilts also will cause grouting material cannot pour in sleeve, visible, and embedded bar is located the inaccurate precast shear wall that will cause and cannot accurately be docked with lower floor body of wall.
Summary of the invention
In method of attachment for existing precast shear wall, adopt steel bushing plate location embedded bar inaccurate, sleeve is docked with embedded bar and misplaces comparatively greatly, cause the problem that precast shear wall and lower floor body of wall cannot accurately dock.The object of this invention is to provide the fixed connection method of embedded bar in a kind of fabricated construction and cast-in-place structural, it adopts wooden cage plate accurately can locate embedded bar, the sleeve in fabricated construction can be made accurately to dock with embedded bar, and then ensure the reliability that fabricated construction connects.
The present invention solves the fixed connection method of embedded bar in the fabricated construction and cast-in-place structural that its technical problem adopts, and step is as follows:
Step one: provide the wooden cage plate that is provided with some datum holes, described datum hole can be corresponding with the position of described fabricated construction inner sleeve; Described wooden cage plate comprises a longitudinal cage plate and some horizontal cage plates, the central axes of described sleeve pipe in the center of multiple datum holes one that described longitudinal cage plate arranges and described fabricated construction, the central axes of described sleeve pipe in the center of the datum hole two on each described horizontal cage plate and described fabricated construction, and in the internal diameter of described datum hole one and described datum hole two and described cast-in-place structural, the external diameter of described embedded bar is suitable;
Step 2: carry out template support needing the position of cast-in-place structural and form a chamber, fix described wooden cage plate at described chamber top, implants some embedded bars in described chamber through described wooden cage plate and positions;
Step 3: concreting in described chamber, removes described wooden cage plate after described hardening of concrete, obtained described cast-in-place structural;
Step 4: dock and fix described fabricated construction and described cast-in-place structural;
Step 5: the gap of fabricated construction described in shutoff and described cast-in-place structural junction, completes construction.
In described step 2, according to the position of described sleeve pipe, first described horizontal cage plate is fixed on the top of described chamber, some described embedded bars are implanted in described chamber through described horizontal cage plate, more described longitudinal cage plate are passed described embedded bar and is fixed on described horizontal cage plate.
In described step 2, according to the position of described sleeve pipe, first described horizontal cage plate is fixed on the top of described chamber, again described longitudinal cage plate is fixed on described horizontal cage plate, and the center line of described datum hole two and datum hole one is overlapped, described embedded bar is implanted in described chamber through described datum hole two and datum hole one.
Further, in described step 2, before described wooden cage plate is fixing, according to the position of described sleeve pipe, the permanent position of embedded bar end described in the bottom marker of described chamber.
The mark that the end of described embedded bar aims at described cavity bottom is implanted in described chamber.
Preferably, the reinforcing bar implanted in fabricated construction described in the end of the described embedded bar in described chamber and lower floor is affixed.
Further, in described step 4, the interior also grouting of sleeve pipe that described embedded bar embeds described fabricated construction is fixing.
Described sleeve pipe, before grouting, first seals the gap of described fabricated construction and described cast-in-place structural junction by cement mortar.
Effect of the present invention is:
One, in fixed connection method of the present invention, use wooden cage plate to locate embedded bar, compared with steel bushing plate, wooden cage plate is easy to be fixedly connected with other components, the high and easy construction of fixing accuracy; And the manufactured materials of wooden cage plate is drawn materials conveniently, low cost, can reduce construction cost.Adopt wooden cage plate to locate embedded bar, the datum hole on wooden cage plate is corresponding with the position of fabricated construction inner sleeve, can disposablely accurately be docked with sleeve pipe by embedded bar, ensure that fabricated construction installation site is accurate, and error meets construction requirement.
Two, in fixed connection method of the present invention, adopt the method that horizontal cage plate combines with longitudinal cage plate, the setting of longitudinal cage plate can be rectified a deviation to the position of embedded bar, makes the location of embedded bar more accurate.
Three, in fixed connection method of the present invention, the center, lower surface of embedded bar overlaps with the gauge point of cavity bottom, pre-buried precision can be improved better, or, reinforcement welding (or colligation) in the lower end of embedded bar and lower floor's fabricated construction is firm, the adverse effect preventing concreting (vibrating head vibrates) from bringing further, makes the connection of fabricated construction guarantee the stressed continuity of reinforcing bar, giving full play to guaranteed strength.
Accompanying drawing explanation
Fig. 1 is the structural representation after installing horizontal cage plate in one embodiment of the invention;
Fig. 2 is the A-A sectional drawing of Fig. 1;
The structural representation after embedded bar is implanted in Fig. 3 one embodiment of the invention;
Fig. 4 is the B-B sectional drawing of Fig. 3;
Fig. 5 is the structural representation after installing longitudinal cage plate in one embodiment of the invention;
Fig. 6 is the C-C sectional drawing of Fig. 5;
Fig. 7 is the schematic diagram of cast-in-place structural;
Fig. 8 is the structural representation after fabricated construction has been fixedly connected with the embedded bar in cast-in-place structural.
Detailed description of the invention
In the fabricated construction proposed the present invention below in conjunction with the drawings and specific embodiments and cast-in-place structural, the fixed connection method of embedded bar is described in further detail.According to the following describes and claims, advantages and features of the invention will be clearer.It should be noted that, accompanying drawing all adopts the form that simplifies very much and all uses non-ratio accurately, only in order to object that is convenient, the aid illustration embodiment of the present invention lucidly.For sake of convenience, hereinafter described " on ", D score is consistent with the upper and lower direction of accompanying drawing, but this can not become the restriction of technical solution of the present invention.
Composition graphs 1 to Fig. 8 illustrates the fixed connection method of embedded bar in fabricated construction of the present invention and cast-in-place structural, the highrise building that the present embodiment combines with assembled steel reinforced concrete wall for a cast-in-place concrete wall (shear wall, beam or post), less than 7 layers is cast-in-place concrete wall, more than 7 layers is assembled steel reinforced concrete wall, then there is the connection of cast-in-place concrete wall and assembled steel reinforced concrete wall, and the problem of the connection of two adjacent assembled steel reinforced concrete wall.As shown in Figure 8, the lower end of assembled steel reinforced concrete wall 70 is provided with some sleeve pipes 72 being connected with vertical reinforcement 71.The assembling method concrete steps of the present embodiment are as follows:
One, cage plate is prepared: provide the wooden cage plate that is provided with some datum holes, above-mentioned datum hole can be corresponding with the position of assembled steel reinforced concrete wall 70 inner sleeve 72;
Two, embedded bar is located: as shown in Figures 1 to 6, needing the position of cast-in-place concrete wall 60 to set up template 10, template 10 supporting forms a chamber 20, then, fix cage plate in the upper end of chamber 20, some embedded bars 50 are implanted in chamber 20 through wooden cage plate and positions;
Three, the building of cast-in-place concrete wall: concreting in chamber 20, removes cage plate after hardening of concrete, the obtained cast-in-place concrete wall 60 being fixed with embedded bar 50 as shown in Figure 7;
Four, wall assembly: dock and fix assembled steel reinforced concrete wall 70 and cast-in-place concrete wall 60;
Five, shutoff body of wall gap: the assembled steel reinforced concrete wall 70 of shutoff and the gap of cast-in-place concrete wall 60 junction, complete assembling construction and obtain the reinforced concrete wall 100 connected as one.
Above-mentionedly make cage plate by timber, it is easy to boring, and cost is lower, easy to operate and can Reusability.Further, the cage plate made due to timber has certain thickness, and compare steel bushing plate, the setting accuracy of wooden cage plate is higher.
To specifically describe the construction method of each step further below, in above-mentioned steps one, cage plate comprises a longitudinal cage plate 40 and some horizontal cage plates 30.According to drawing, the arrangement position of assembled steel reinforced concrete wall 70 middle sleeve 72 is turned over sample on longitudinal cage plate 40, mark with prepared Chinese ink and hole and obtain some datum holes 1, make the central axes of the center of datum hole 1 and assembled steel reinforced concrete wall 70 inner sleeve 72, and the external diameter of embedded bar 50 is suitable in the internal diameter of datum hole 1 and cast-in-place concrete wall 60, error is no more than ± 2mm.According to resilience line, the line of ink marker is rebounded at horizontal cage plate 30, with rig obtained datum hole 2 31 of vertical punching on each horizontal cage plate 30.In the internal diameter of datum hole 2 31 and cast-in-place concrete wall 60, the external diameter of embedded bar 50 is suitable.The quantity of horizontal cage plate 30 is equal to or less than the quantity of datum hole 1.
In above-mentioned steps two, as depicted in figs. 1 and 2, after surveying setting-out according to the position of the line of ink marker by template 10 supporting in the position needing cast-in-place concrete wall 60, simultaneously fixation.To arrange successively horizontal cage plate 30 according to the position of surveying setting-out in both wings template 10 upper end, make the arrangement position of datum hole 2 31 corresponding with the position of assembled steel reinforced concrete wall 70 inner sleeve 72, and the central axes of the center of datum hole 2 31 and sleeve pipe 72.When fixed lateral cage plate 30, by one end stickfast of horizontal cage plate 30 on the wooden form of agent structure, the stability of cage plate system can be ensured better; For the other end of fixed lateral cage plate 30, incorporation engineering actual conditions can weld one and be erected at ground reinforcing bar tripod, reinforcing bar tripod upper end welds a steel hoop again, the other end of horizontal cage plate 30 is embedded in above-mentioned steel hoop and is fixed, so just according to drawing by the fixation of horizontal cage plate 30.Adopt the form of reinforcing bar tripod, stability is relatively good, is better than other forms of fixed structure.Those skilled in the art should know, and are a kind of example of horizontal cage plate 30 fixing means above, should not become the restriction of technical solution of the present invention.
Then, as shown in Figure 3 and Figure 4, the datum hole two 31 of some embedded bars 50 through horizontal cage plate 30 is implanted in chamber 20.Subsequently, according to the position of surveying setting-out, longitudinal cage plate 40 is passed embedded bar 50 and is placed on horizontal cage plate 30, check that whether the position of embedded bar 50 is rationally with accurate, adjustment embedded bar 50 makes its vertical missing be less than ± 5mm, and horizontal cage plate 30 is ± 2mm with the position deviation of datum hole on longitudinal cage plate 40.As another embodiment, also can after horizontal cage plate 30 be fixing, longitudinal cage plate 40 is directly fixed on horizontal cage plate 30, and the center line of datum hole 2 31 and datum hole 1 is overlapped, again embedded bar 50 is implanted in chamber 20 through datum hole 2 31 and datum hole 1, also can realize the object of the technical program.Cage plate of the present invention is on the basis of horizontal cage plate 30, increase longitudinal cage plate 40, longitudinal cage plate 40 is holed according to the position of assembled steel reinforced concrete wall 70 upper bush 72, each datum hole interval error is no more than ± 3mm, datum hole trueness error is no more than ± 2mm, under the acting in conjunction of horizontal cage plate 30 and longitudinal cage plate 40, the location of embedded bar 50 is more accurate, therefore, control errors embedded bar 50 can located is within ± 2mm, and the control errors that can effectively make sleeve 72 dock with embedded bar 50 is within ± 5mm.
Preferably scheme is, in above-mentioned steps two, before installation cage plate, first carry out accurate surveying setting-out, according to the position of sleeve pipe 72 cross-section center, make marks in the bottom of chamber 20, the center of embedded bar 50 lower surface of implanting cage plate, at ± 2mm, is placed on mark, embedded bar 50 alignment mark by unwrapping wire control errors, then its location is relatively accurate, on the contrary then inaccuracy.Then, the pre-buried degree of depth of embedded bar 50 is calculated according to design drawing, preferably, the degree of depth implanting the embedded bar 50 in chamber 20 is more than or equal to 500mm, now, embedded bar 50 is relatively straight, is convenient to the placement precision being detected horizontal cage plate 30 by the implantation of embedded bar 50.Embedded bar diameter is 16mm, 18mm or 22mm etc.
Above content is the connection of cast-in-place concrete wall 60 and assembled steel reinforced concrete wall 70, for solving the connectivity problem of two adjacent assembled steel reinforced concrete wall 70, cast-in-place band can be set in the upper end of the assembled steel reinforced concrete wall 70 of lower floor, carry out template 10 supporting and fixing cage plate, when ensure embedded bar 50 very precise vertical, by firm for the reinforcement welding in the assembled steel reinforced concrete wall in the lower end of embedded bar 50 and lower floor 70, pre-buried precision can be improved better, prevent the adverse effect that concreting (vibrating head vibrates) brings, finally according to the size of turning over master drawing paper size and check embedded bar 50, by error-reduction to minimum, complete the firm connection of two adjacent assembled steel reinforced concrete wall 70, the connection of assembled steel reinforced concrete wall is made to guarantee the stressed continuity of vertical reinforcement, giving full play to guaranteed strength.
In above-mentioned steps four, as shown in Figure 8, embedded bar 50 upper end embed assembled steel reinforced concrete wall 70 sleeve pipe 72 in and grouting is fixing.Namely pea gravel concreten or high strength grout 75 are poured into by charging aperture 74 pressure of grouting machine from sleeve pipe 72 lower end, treat that namely discharging opening 73 grout of sleeve pipe 72 upper end illustrates that in sleeve 72, grouting is relatively full, stops perfusion after voltage stabilizing a period of time.For mortar leakage prevention, sleeve pipe 72, before grouting, first seals assembled steel reinforced concrete wall 70 and the gap of cast-in-place concrete wall 60 junction by cement mortar, both avoided spillage, and turn improved speed of application.
In fixed connection method of the present invention, use wooden cage plate to locate embedded bar 50, compared with steel bushing plate, there is convenience of drawing materials, low cost, fix the advantages such as the high and easy construction of accuracy; Wooden cage plate is adopted to locate embedded bar 50, datum hole on wood cage plate is corresponding with the position of assembled steel reinforced concrete wall 70 inner sleeve 72, disposable embedded bar 50 accurately can be docked with sleeve pipe 72, ensure that assembled steel reinforced concrete wall 70 installation site is accurate, and error meets construction requirement.And adopt the method that horizontal cage plate 30 combines with longitudinal cage plate 40, the setting of longitudinal cage plate 40 can be rectified a deviation to the position of embedded bar 50, makes the location of embedded bar 50 more accurate.
Foregoing description is only the description to present pre-ferred embodiments, any restriction not to the scope of the invention, and any change that the those of ordinary skill in field of the present invention does according to above-mentioned disclosure, modification, all belong to the protection domain of claims.
Claims (8)
1. the fixed connection method of embedded bar in fabricated construction and cast-in-place structural, step is as follows:
Step one: provide the wooden cage plate that is provided with some datum holes, described datum hole can be corresponding with the position being connected with the sleeve pipe of vertical reinforcement in described fabricated construction; Described wooden cage plate comprises a longitudinal cage plate and some horizontal cage plates, the central axes of described sleeve pipe in the center of multiple datum holes one that described longitudinal cage plate arranges and described fabricated construction, the central axes of described sleeve pipe in the center of the datum hole two on each described horizontal cage plate and described fabricated construction, and in the internal diameter of described datum hole one and described datum hole two and described cast-in-place structural, the external diameter of described embedded bar is suitable;
Step 2: carry out template support needing the position of cast-in-place structural and form a chamber, fix described wooden cage plate at described chamber top, implants some embedded bars in described chamber through described wooden cage plate and positions;
Step 3: concreting in described chamber, removes described wooden cage plate after described hardening of concrete, obtained described cast-in-place structural;
Step 4: dock and fix described fabricated construction and described cast-in-place structural;
Step 5: the gap of fabricated construction described in shutoff and described cast-in-place structural junction, completes construction.
2. fixed connection method according to claim 1, it is characterized in that: in described step 2, according to the position of described sleeve pipe, first described horizontal cage plate is fixed on the top of described chamber, some described embedded bars are implanted in described chamber through described horizontal cage plate, more described longitudinal cage plate are passed described embedded bar and is fixed on described horizontal cage plate.
3. fixed connection method according to claim 1, it is characterized in that: in described step 2, according to the position of described sleeve pipe, first described horizontal cage plate is fixed on the top of described chamber, again described longitudinal cage plate is fixed on described horizontal cage plate, and the center line of described datum hole two and datum hole one is overlapped, described embedded bar is implanted in described chamber through described datum hole two and datum hole one.
4. the fixed connection method according to any one of claims 1 to 3, is characterized in that: in described step 2, before described wooden cage plate is fixing, according to the position of described sleeve pipe, and the permanent position of embedded bar end described in the bottom marker of described chamber.
5. fixed connection method according to claim 4, is characterized in that: the mark that the end of described embedded bar aims at described cavity bottom is implanted in described chamber.
6. fixed connection method according to claim 4, is characterized in that: the reinforcing bar implanted in fabricated construction described in the end of the described embedded bar in described chamber and lower floor is affixed.
7. the fixed connection method according to any one of claims 1 to 3, is characterized in that: in described step 4, and the interior also grouting of sleeve pipe that described embedded bar embeds described fabricated construction is fixing.
8. fixed connection method according to claim 7, is characterized in that: described sleeve pipe, before grouting, first seals the gap of described fabricated construction and described cast-in-place structural junction by cement mortar.
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