CN102182317A - Concrete spray steel mesh sandwich formwork cast-in-place shear wall construction method and shear wall - Google Patents
Concrete spray steel mesh sandwich formwork cast-in-place shear wall construction method and shear wall Download PDFInfo
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- CN102182317A CN102182317A CN2011100700804A CN201110070080A CN102182317A CN 102182317 A CN102182317 A CN 102182317A CN 2011100700804 A CN2011100700804 A CN 2011100700804A CN 201110070080 A CN201110070080 A CN 201110070080A CN 102182317 A CN102182317 A CN 102182317A
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Abstract
The invention relates to a concrete spray steel mesh sandwich formwork cast-in-place shear wall construction method and a shear wall manufactured by using the method. The construction method comprises the following steps: (1) mounting matched inner and outer steel mesh sandwich light plates on the preserved formwork positions; (2) spraying concrete on site on the inner side surface of the inner steel mesh sandwich light plate and the outer side surface of the outer steel mesh sandwich light plate; and (3) and casting concrete in place between the inner and outer steel mesh sandwich light plates. The shear wall is provided with the inner and outer steel mesh sandwich light plates; a middle concrete layer is cast between the inner and outer sandwich light plates; and inner and outer side surface concrete layers are sprayed on the outer side surface of the outer sandwich light plate and the inner side surface of the inner sandwich light plate respectively. By adopting the method in the invention, integration of formwork, insulation and structure is realized, the construction speed is obviously improved, the service life of wall, particularly insulation layer, is obviously prolonged, and the capability of the wall resisting shear force is obviously improved.
Description
Technical field
The present invention relates to a kind of job practices of cast-in-place shear wall, particularly a kind of in-situ spraying concrete that passes through on the light plate of steel mesh sandwich shows pallet, and the job practices of the cast-in-place shear wall of not removing after the construction and the cast-in-place shear wall that adopts this method to make.
Background technology
The existing job practices of cast-in-place shear wall normally fixes the finished product template of steel etc. earlier, then in the cavity that template surrounded the in-site pouring concrete to form body of wall, treat that body of wall reaches certain requirement of strength after, stripping.The auxiliary construction amount of this job practices is big, unproductive time is long, for exterior wall, also will carry out the exterior-wall heat insulation construction in addition, usually adopt at the cast-in-situ wall lateral surface and paste the thin external insulation method of plastering of polyphenyl plate heat preserving, on the one hand, great in constructing amount, long in time limit, the cost height; On the other hand, the life-span of insulation layer is shorter than structure trunk, only has about 25 years, then need remove and reform, and has not only increased the second investment, and has increased building waste, influences environment.
Summary of the invention
For overcoming the above-mentioned defective of prior art, the shear wall that the invention provides a kind of concrete spraying steel mesh sandwich template cast-in-place shear wall job practices and adopt this method to make, adopt this job practices to need not stripping, simplified construction sequence, accelerated construction speed, and made shear wall has good heat insulation effect, need not to carry out in addition the exterior-wall heat insulation construction again.
Main technical schemes of the present invention has:
A kind of concrete spraying steel mesh sandwich template cast-in-place shear wall job practices may further comprise the steps:
(1) the supporting light plate of medial and lateral steel mesh sandwich is installed on the template position of reserving;
(2) at the medial surface of the light plate of described inboard steel mesh sandwich and the lateral surface in-situ spraying concrete of the light plate of described outside steel mesh sandwich;
(3) poured in place concrete between the light plate of described medial and lateral steel mesh sandwich.
Usually, in described step (1), its height described outside steel mesh sandwich light plate identical with story height can be installed earlier, low collar tie beam of the light plate of the described outside of its aspect ratio steel mesh sandwich or coupling beam height are installed again, width is than the light plate of described inboard steel mesh sandwich of narrow two the joint pin mouths of the described light plate of outside steel mesh sandwich, the width that the light plate of described outside steel mesh sandwich is respectively reserved a joint pin mouth is compared at two ends about when the light plate of described inboard steel mesh sandwich is installed, in described, behind the outside light plate of the steel mesh sandwich centering in place, tie firm basic connecting reinforcement, dispose whole seam dowel, and adopt foamed glue that the seam crossing between the light plate of described outside steel mesh sandwich is carried out the cementation of fissures and handle.
Preferably, in described step (2), on the light plate of described medial and lateral steel mesh sandwich during the in-situ spraying concrete, according to order burst, segmentation in the outer back earlier, carry out from bottom to top.
Preferably, before the in-situ spraying concrete, on respective side, spray earlier interfacial agents.
Usually, in described, steel mesh sandwich light plate in the outside preferably is configured to by organic foam plastic plate and three dimensions welded wire fabric, described three dimensions welding wire rack comprise lay respectively at described organic foam plastic plate both sides in, the outerplanar gauze wire cloth with a plurality of be used to be connected described in, the connection steel wire of outerplanar gauze wire cloth, described connection steel wire runs through described organic foam plastic plate, the fixedly connected described inner plane gauze wire cloth of one end, the fixedly connected outerplanar gauze wire cloth of the other end, described a plurality of connection steel wire is regularly arranged in length and breadth, two adjacent arbitrarily bearing of trends that connect steel wire are the different surface beeline relation, in described, steel mesh sandwich light plate in the outside is divided into door and window type and no door and window type, described have the door of the light plate of door and window shaped steel network folder core and/or the hole of window to be furnished with framed and stiffener and four jiaos of anti-crack net sheets, in described step (1), described when the light plate of door and window shaped steel network folder core is arranged when installing, according to the framed centering up and down in the hole of door and/or window, fix the light plate of described steel mesh sandwich behind the centering of the left and right sides again.
Preferably, in described step (1), can also be provided for socketing many groups connecting reinforcement assembly of the light plate of described medial and lateral steel mesh sandwich to the theoretical value of the lateral pressure of the light plate generation of described medial and lateral steel mesh sandwich according to cast-in-situ concrete in the described step (3).
A kind of form that preferably specifically is provided with of described connecting reinforcement assembly is: every group of described connecting reinforcement assembly is by main muscle and socket steel plate and form, the described quantity that sockets steel plate is two, lay respectively at the inboard of the light plate of described inboard steel mesh sandwich and the outside of the light plate of described outside steel mesh sandwich, the quantity of described main muscle is one or more, described many main muscle rotations are symmetrically distributed and leave distance each other, the two ends of described main muscle run through respectively described in, the light plate of outside steel mesh sandwich, and be welded in the outside of the inboard of the light plate of described inboard steel mesh sandwich and the light plate of outside steel mesh sandwich and socket accordingly on the steel plate, in described, transverse weld one place or many places are strengthened stirrup and/or are connected with the cage shape silk screen that surrounds described main muscle on the described main muscle between the light plate of outside steel mesh sandwich, described cage shape silk screen by vertically to or oblique dowel fixedly connected with described main muscle, opposite along the incline direction of the adjacent described oblique dowel on the main muscle direction, one end of described dowel is welded on the main muscle or on the described stirrup, the other end is welded on the crosspoint or silk screen skeleton of described cage shape silk screen, described reinforcement stirrup sockets the outside of main muscle around each root, stirrup is strengthened along the described longitudinal separation setting that sockets main muscle in described many places, describedly socket main muscle and be one or more groups, the steel plate that sockets that is positioned at the same side that belongs to not connecting reinforcement assembly on the same group is separately independently or organize one more.
Adopt said method and respectively improve one's methods and a kind of concrete spraying steel mesh sandwich template cast-in-place shear wall that the specific embodiment is prepared, it is provided with the light plate of inside and outside steel mesh sandwich, layer of concrete in the middle of having built between the light plate of described inside and outside sandwich is coated with medial and lateral surface concrete layer respectively on the medial surface of the lateral surface of the light plate of described outer sandwich and the described interior light plate of sandwich.
Preferably, in described, steel mesh sandwich light plate in the outside can be configured to by organic foam plastic plate and three dimensions welded wire fabric, described three dimensions welding wire rack comprise lay respectively at described organic foam plastic plate both sides in, the outerplanar gauze wire cloth with a plurality of be used to be connected described in, the connection steel wire of outerplanar gauze wire cloth, described connection steel wire runs through described organic foam plastic plate, the fixedly connected described inner plane gauze wire cloth of one end, the fixedly connected outerplanar gauze wire cloth of the other end, described a plurality of connection steel wire is regularly arranged in length and breadth, and two adjacent arbitrarily bearing of trends that connect steel wire are the different surface beeline relation.
Preferred, can also be provided with many group connecting reinforcement assemblies, every group of described connecting reinforcement assembly is by main muscle and socket steel plate and form, the described quantity that sockets steel plate is two, lay respectively at the inboard of the light plate of described inboard steel mesh sandwich and the outside of the light plate of described outside steel mesh sandwich, the quantity of described main muscle is one or more, described many main muscle rotations are symmetrically distributed and leave distance each other, the two ends of described main muscle run through respectively described in, the light plate of outside steel mesh sandwich, and be welded in the outside of the inboard of the light plate of described inboard steel mesh sandwich and the light plate of outside steel mesh sandwich and socket accordingly on the steel plate, in described, transverse weld one place or many places are strengthened stirrup and/or are connected with the cage shape silk screen that surrounds described main muscle on the described main muscle between the light plate of outside steel mesh sandwich, described cage shape silk screen by vertically to or oblique dowel fixedly connected with described main muscle, opposite along the incline direction of the adjacent described oblique dowel on the main muscle direction, one end of described dowel is welded on the main muscle or on the described stirrup, the other end is welded on the crosspoint or silk screen skeleton of described cage shape silk screen, described reinforcement stirrup sockets the outside of main muscle around each root, stirrup is strengthened along the described longitudinal separation setting that sockets main muscle in described many places, describedly socket main muscle and be one or more groups, the steel plate that sockets that is positioned at the same side that belongs to not connecting reinforcement assembly on the same group is separately independently or organize one more.
The invention has the beneficial effects as follows:
1, on the light plate of steel mesh sandwich, pass through the in-situ spraying concrete, formation has the template of the entity of sufficient intensity as layer of concrete in the middle of building, building the back is bonded as one with the middle layer of concrete that forms, form shear wall, sandwich in the light plate of described steel mesh sandwich can adopt various sheet materials with heat-insulating property, form the insulation layer of body of wall thus, save stripping in this way and carried out the construction sequence of exterior-wall heat insulation in addition, obviously shortened the duration, also realized template, insulation, structure-integrated, strengthened the adhesion strength between integrality of wall and each layer, reduced peeling off of insulation layer and exterior wall skin to a great extent, greatly prolong body of wall life-span of insulation layer particularly, greatly reduced maintenance cost;
2, on the light plate of steel mesh sandwich, pass through the existing pallet of in-situ spraying concrete, make outer built-inization of the light plate of steel mesh sandwich of wall, high insulating effect, the light plate of steel mesh sandwich is suitable with the structure trunk life-span, can use 50-70; And because the light plate of outboard template steel mesh sandwich is successive, therefore do not produce heat bridge, winter can dewfall; And the thickness of the used light material of template (as polyphenyl foam) can be selected as required flexibly, can satisfy the insulation requirement of severe cold and cold district Residential Buildings Energy 65%, is particularly useful for the above highrise building of 100m;
3, owing on described main muscle, weld many places reinforcement stirrup or be surrounded by cage shape silk screen, a plurality of described main muscle in one group can be located effectively, increase its internal bond strength, main muscle concrete is on every side combined firmly with main muscle, avoided main muscle with the separation between the concrete, further improved the bulk strength of body of wall, reduced ambient pressure and make the possibility of described main muscle distortion;
4, be used for vertical direction or the oblique dowel that is provided with that cage shape silk screen is connected with described main muscle owing to being provided with, further improved main muscle with the adhesion between the surrounding concrete.Particularly adopted oblique dowel, and adjacent dowel incline direction is opposite, thus when body of wall is subjected to shearing force, because main muscle will or the displacement tendency occur with respect to the concrete generation axial displacement of wrapping up described cage shape silk screen, oblique dowel on the respective direction will reduce (stretching) or increase in this influence degree of having a down dip that relatively moves, with the outside top of cage shape silk screen or to lira, cage shape silk screen " is swollen " or the tendency of " dwindling ", cause of the effect of cage shape silk screen with the surrounding concrete generation power in it is wrapped in, stop the axial displacement of described main muscle by the concrete rigidity around the cage shape silk screen, further improved the ability and the bulk strength of body of wall anti-shearing force thus.
4, serve as the existing pallet in basis with mechanical-moulded whole the light plate of steel mesh sandwich, good integrity, and it is in light weight to compare steel form, and transportation and installation do not need large lifting equipment, less engineering investment, made body of wall weight reduction in the construction;
5, before poured in place concrete between the light plate of described medial and lateral steel mesh sandwich, size setting according to the cast-in-situ concrete lateral pressure earlier runs through the light plate of described medial and lateral steel mesh sandwich to socket many groups connecting reinforcement assembly of the light plate of described medial and lateral steel mesh sandwich, make template at the medial surface of the light plate of described inboard steel mesh sandwich and the lateral surface in-situ spraying concrete of the light plate of outside steel mesh sandwich again, improve the bulk strength and the rigidity of template, avoided the cast-in-situ concrete lateral pressure to make template misplace, be out of shape or crack;
6, on the lateral surface of the medial surface of the light plate of inboard steel mesh sandwich and the light plate of outside steel mesh sandwich, be coated with a layer concrete, because layer of concrete belongs to the incombustible construction that does not fire, fire endurance is more than 2 hours, be better than the thin outer insulation way of plastering of existing stickup polyphenyl greatly and (outside severe cold area, paste polyphenyl thickness more than 15cm, the junction is easy to cracking, maintenance difficult is unfavorable for fire prevention), significantly improved the fireproof performance and the heat-insulating property of shear wall.
Description of drawings
Fig. 1 is the structural representation that has or not the light plate of door and window shaped steel network folder core;
Fig. 2 is the a-a sectional view of Fig. 1;
Fig. 3 is the structural representation of the light plate of no door and window shaped steel network folder core;
Fig. 4 is the b-b sectional view of Fig. 3;
Fig. 5 is the structural behavior schematic diagram after the light plate fixed installation of inside and outside steel mesh sandwich;
Fig. 6 is the c-c sectional view of Fig. 3;
Fig. 7 is the horizontal section structural representation of cast-in-place shear wall of the present invention.
The specific embodiment
With a kind of preferred constructure scheme job practices of the present invention is described below in conjunction with Fig. 1-6, may further comprise the steps:
(1) foundation construction: carry out foundation construction, pre-buried inside and outside template connecting reinforcement 5 and the vertical dowel of shear wall on concrete foundation beam 11.
(2) the light plate of steel mesh sandwich is installed:
(a) on the template position of reserving, install supporting in, the light plate of outside steel mesh sandwich, its spacing is determined by shear wall thickness, its height described outside steel mesh sandwich light plate 2 identical with story height is installed earlier, low collar tie beam of the light plate of the described outside of its aspect ratio steel mesh sandwich or coupling beam height are installed again, width is than the light plate 3 of described inboard steel mesh sandwich of narrow two the joint pin mouths of the described light plate of outside steel mesh sandwich, the width that the light plate of described outside steel mesh sandwich is respectively reserved a joint pin mouth is compared at two ends about when the light plate of described inboard steel mesh sandwich is installed, be preferably 40 centimeters, to reserve the space that is provided with of beam and joint pin.End is furnished with post connecting reinforcement 6.1 about the light plate of described steel mesh sandwich, and the upper end is furnished with floor connecting reinforcement 6.2.
The light plate of described steel mesh sandwich is made whole (3 * 4m) by construction work exterior wall standard width of a room in an old-style house size by the special molding machine, be configured to by organic foam plastic plate and the three dimensions welded wire fabric that is positioned at described organic foam plastic plate both sides, described three dimensions welding wire rack comprises at the plane gauze wire cloth in the described organic foam plastic plate two sides outsides and is welded between the described plane gauze wire cloth of both sides and runs through regularly arranged in length and breadth many of described organic foam plastic plate and connects steel wires 8, adjacent two bearing of trends that connect steel wire are the different surface beeline relation, and the incline direction of the two is preferably big to opposite, for example the left and right sides adjacent two one of incline direction connecting steel wires to the first from left to the right, two neighbouring one of incline directions that connect steel wire make progress one downwards, so form numerous little space truss unit, the intensity of wire material is fully used, thereby the overall structure rigidity of described three dimensions welding wire rack is improved, and the load of a plurality of directions can be born in each part.
Described organic foam plastic plate (being also referred to as light material) can be lath or whole plate, can select polyphenyl, phenolic resins or polyurethanes organic foam plastic for use, and the preferred burn performance should not be lower than B level, density 〉=20kg/m
3The polyphenyl foam plastics, its thickness require to be determined according to insulation.
The used steel wire of described three dimensions welding wire rack is preferably
Zinc-coated wire, described plane gauze wire cloth preferably adopts the net of 50 * 50 grids.
The light slab integral of described steel mesh sandwich is good, in light weight, and transportation and installation do not need large lifting equipment.Every square metre of the light plate of individual layer steel mesh sandwich is 6.25kg only, whole (the heavy 75kg of 3 * 4m) the outside light plates of steel mesh sandwich, steel mesh sandwich light plate gross weight in medial and lateral is less than 150kg, be steel form weight (the every weight per square meter 50kg of ordinary steel template, the heavy 1200kg of one deck steel form, inside and outside two-layer steel form is heavy can to reach 2400k) 1/8.
The theoretical value setting of the lateral pressure that during (b) according to cast-in-situ concrete steel mesh sandwich light plate in described medial and lateral is produced runs through the light plate of described medial and lateral steel mesh sandwich to socket many groups connecting reinforcement assembly 7 of the light plate of described medial and lateral steel mesh sandwich, should consider the various factors influence in the practical application when organizing the connecting reinforcement assembly be provided with more.
The form that specifically is provided with of described connecting reinforcement assembly is preferably: every group of described connecting reinforcement assembly is by main muscle and socket steel plate and form, the described quantity that sockets steel plate is two, lay respectively at the inboard of the light plate of described inboard steel mesh sandwich and the outside of the light plate of described outside steel mesh sandwich, the quantity of described main muscle is one or more, described many main muscle rotations are symmetrically distributed and leave distance each other, the two ends of described main muscle run through respectively described in, the light plate of outside steel mesh sandwich, and be welded in the outside of the inboard of the light plate of described inboard steel mesh sandwich and the light plate of outside steel mesh sandwich and socket accordingly on the steel plate 10, in described, transverse weld one place or many places are strengthened stirrup 9 and/or are connected with the cage shape silk screen that surrounds described main muscle on the described main muscle between the light plate of outside steel mesh sandwich, described cage shape silk screen by vertically to or oblique dowel fixedly connected with described main muscle, opposite along the incline direction of the adjacent described oblique dowel on the main muscle direction, one end of described dowel is welded on the main muscle or on the described stirrup, the other end is welded on the crosspoint or silk screen skeleton of described cage shape silk screen, described reinforcement stirrup is around the outside of each root master muscle, the longitudinal separation setting of stirrup along described main muscle strengthened in described many places, described main muscle is one or more groups, and the steel plate that sockets that is positioned at the same side that belongs to not connecting reinforcement assembly on the same group is separately independently or organize one more.
(c) behind the described light plate of medial and lateral steel mesh sandwich centering in place, tie firm basic connecting reinforcement, dispose whole seam dowel, and adopt foamed glue that the seam crossing between the light plate of described outside steel mesh sandwich is carried out the cementation of fissures and handle, preferably adopt polyurethane foam glue to carry out the cementation of fissures and handle.
The light plate of described steel mesh sandwich can be divided into door and window type and no door and window type, and described have the door of the light plate of door and window shaped steel network folder core and/or the hole of window to be furnished with framed and stiffener 6.3 and four jiaos of anti-crack net sheets.When employing has the light plate of steel mesh sandwich of door and window type, be according to the hole of door and/or window framed centering, left and right sides centering up and down.
(3) in-situ spraying concrete: water spray is moistening earlier on the lateral surface of the medial surface of the light plate of described inboard steel mesh sandwich and the light plate of described outside steel mesh sandwich, and then the in-situ spraying concrete.
The concrete of in-situ spraying is cemented on the light plate of described steel mesh sandwich and forms layer of concrete, become existing pallet with the light plate of described steel mesh sandwich, has certain supporting capacity, (for the high template of 3m, the lateral pressure during cast-in-situ concrete can reach 7500kg/m to its lateral pressure can to resist cast-in-place concrete
2) indeformable, and need not after the construction to remove, and become one with the agent structure of shear wall, the organic foam plastic plate in the light plate of described inside and outside steel mesh sandwich serves as the inside and outside insulation layer of shear wall respectively, has save the wall thermal insulating construction of carrying out in addition after shear wall construction finishes.The aforesaid cementation of fissures is handled and can be made the light plate insulation layer of outside steel mesh sandwich of shear wall successive, therefore do not produce heat bridge, avoid shear wall dewfall in the winter time, high insulating effect, therefore, adopt job practices of the present invention more remarkable for the beneficial effect that exterior wall produced.
Be preferably in before the in-situ spraying concrete, on the side of preparing pneumatically placed concrete, completely spray interfacial agents earlier, to improve the adhesive property and the fireproof performance of the light plate of described medial and lateral steel mesh sandwich.About the opportunity of spraying interfacial agents, preferably before the light plate of described steel mesh sandwich being transported to the scene, just completely spray interfacial agents at least one side at its organic foam plastic plate, can be before the light plate of described steel mesh sandwich dispatches from the factory, to carry out, and guarantee that when mounted the medial surface of the light plate of described inboard steel mesh sandwich and the lateral surface of the light plate of described outside steel mesh sandwich are a side that is coated with interfacial agents.The operation of completely spraying interfacial agents also can be carried out at the construction field (site).
During the in-situ spraying concrete, preferably adopt mechanically spraying, coating thickness is preferably the 3-4 centimetre.During spraying preferably according to order burst, segmentation in the first outer back, carry out from bottom to top.The thickness that should guarantee gunning concrete in spraying operation is accurately consistent, and initial set is layer of concrete 4 back equatings in time, and spraying bounce-back material is in time cleared up recovery, and reserves the test block of gunning concrete intensity.Spray after 2-4 hour, the available clear water maintenance of formed gunning concrete layer, maintenance is no less than 7 days.
(4) cast-in-place concrete: after gunning concrete layer intensity reaches 7.5MPa at least, poured in place concrete and indoor beam slab construction between the light plate of described medial and lateral steel mesh sandwich again, the layer of concrete 1 that forms between the light plate of described medial and lateral steel mesh sandwich is the body of wall of described shear wall.
Adopt the made concrete spraying steel mesh sandwich template cast-in-place shear wall of job practices of the present invention as shown in Figure 7, be sandwich construction, layer of concrete 1 and medial and lateral surface concrete layer 4 in the middle of comprising, be respectively the light plate 2.1 of inside and outside steel mesh sandwich and 3.1 between layer of concrete and the medial and lateral surface concrete layer in the middle of described, respectively the light material in the light plate of medial and lateral steel mesh sandwich in the corresponding work progress.
In described, the both sides of the light plate of outer steel mesh sandwich respectively are provided with a plane gauze wire cloth, and be welded with between the described plane gauze wire cloth of the light plate of each described steel mesh sandwich both sides and run through the light plate of described steel mesh sandwich and be the many connection steel wires that matrix form is arranged, adjacent two bearing of trends that connect steel wire are the different surface beeline relation, in described, described plane gauze wire cloth between the light plate of outer steel mesh sandwich be connected steel wire be embedded in described in the middle of in the layer of concrete, the plane gauze wire cloth of the light plate of described inner steel web sandwich inboard be connected steel wire and be embedded in the described medial surface layer of concrete, the plane gauze wire cloth in the light plate of the described outer steel mesh sandwich outside be connected steel wire and be embedded in the described lateral surface layer of concrete.
Can be respectively equipped with inside and outside tack coat between described medial and lateral surface concrete layer and the light plate of inside and outside steel mesh sandwich, described tack coat is to be formed by interfacial agents, and the sandwiched plate in the light plate of described inside and outside steel mesh sandwich can be the organic foam plastic plate usually.
Described shear wall preferably be provided be built-in with one or more groups run through described in the middle of layer of concrete and in, the connecting reinforcement assembly of the light plate of outer steel mesh sandwich, every group of described connecting reinforcement assembly the inboard of the light plate of described inner steel web sandwich and described outside the outside of the light plate of steel mesh sandwich be welded in a slice separately and socket on the steel plate, the described steel plate that sockets that is positioned at the same side is independently a steel plate or a shared block plate separately, be positioned at described, stirrup is strengthened in transverse weld one place or many places on the described connecting reinforcement assembly between the light plate of outer steel mesh sandwich, described reinforcement stirrup is around the outside of each root connecting reinforcement assembly, when the reinforcement stirrup is many places, each strengthens the longitudinal separation setting of stirrup along described connecting reinforcement assembly, described reinforcement stirrup and be positioned at described, connecting reinforcement assembly between the light plate of outer steel mesh sandwich is embedded in the described middle layer of concrete.
Facts have proved, adopt the formed concrete spraying of job practices of the present invention steel mesh sandwich template cast-in-place shear wall, can satisfy the insulation requirement of severe cold and cold district Residential Buildings Energy 65%, template, insulation, structure-integrated, firm freeze proof, fire resistance is excellent, is applicable to multilayer and external wall of high-rise building, is particularly useful for the above highrise building of 100m, can reach 50-70 service life, almost with the same life-span of structure trunk.
For space dividing, pointing to indoor direction is " interior " with respect to the house for " interior " that the present invention is alleged and " outward ", and pointing to outdoor direction is " outward ".
Claims (10)
1. a concrete sprays steel mesh sandwich template cast-in-place shear wall job practices, it is characterized in that may further comprise the steps:
(1) the supporting light plate of medial and lateral steel mesh sandwich is installed on the template position of reserving;
(2) at the medial surface of the light plate of described inboard steel mesh sandwich and the lateral surface in-situ spraying concrete of the light plate of described outside steel mesh sandwich;
(3) poured in place concrete between the light plate of described medial and lateral steel mesh sandwich.
2. concrete spraying steel mesh sandwich template cast-in-place shear wall job practices as claimed in claim 1, it is characterized in that in described step (1), its height described outside steel mesh sandwich light plate identical with story height is installed earlier, low collar tie beam of the light plate of the described outside of its aspect ratio steel mesh sandwich or coupling beam height are installed again, width is than the light plate of described inboard steel mesh sandwich of narrow two the joint pin mouths of the described light plate of outside steel mesh sandwich, the width that the light plate of described outside steel mesh sandwich is respectively reserved a joint pin mouth is compared at two ends about when the light plate of described inboard steel mesh sandwich is installed, in described, behind the outside light plate of the steel mesh sandwich centering in place, tie firm basic connecting reinforcement, dispose whole seam dowel, and adopt foamed glue that the seam crossing between the light plate of described outside steel mesh sandwich is carried out the cementation of fissures and handle.
3. concrete spraying steel mesh sandwich template cast-in-place shear wall job practices as claimed in claim 2, it is characterized in that in the described step (2), on the light plate of described medial and lateral steel mesh sandwich during the in-situ spraying concrete, according to order burst, segmentation in the outer back earlier, carry out from bottom to top.
4. concrete spraying steel mesh sandwich template cast-in-place shear wall job practices as claimed in claim 3 is characterized in that before the in-situ spraying concrete, sprays earlier interfacial agents on respective side.
5. concrete spraying steel mesh sandwich template cast-in-place shear wall job practices as claimed in claim 4, it is characterized in that described in, steel mesh sandwich light plate in the outside is configured to by organic foam plastic plate and three dimensions welded wire fabric, described three dimensions welding wire rack comprise lay respectively at described organic foam plastic plate both sides in, the outerplanar gauze wire cloth with a plurality of be used to be connected described in, the connection steel wire of outerplanar gauze wire cloth, described connection steel wire runs through described organic foam plastic plate, the fixedly connected described inner plane gauze wire cloth of one end, the fixedly connected outerplanar gauze wire cloth of the other end, described a plurality of connection steel wire is regularly arranged in length and breadth, two adjacent arbitrarily bearing of trends that connect steel wire are the different surface beeline relation, in described, steel mesh sandwich light plate in the outside is divided into door and window type and no door and window type, described have the door of the light plate of door and window shaped steel network folder core and/or the hole of window to be furnished with framed and stiffener and four jiaos of anti-crack net sheets, in described step (1), described when the light plate of door and window shaped steel network folder core is arranged when installing, according to the framed centering up and down in the hole of door and/or window, fix the light plate of described steel mesh sandwich behind the centering of the left and right sides again.
6. as claim 1,2,3,4 or 5 described concrete spraying steel mesh sandwich template cast-in-place shear wall job practicess, it is characterized in that in described step (1), also will be provided for socketing many groups connecting reinforcement assembly of the light plate of described medial and lateral steel mesh sandwich to the theoretical value of the lateral pressure of the light plate generation of described medial and lateral steel mesh sandwich according to cast-in-situ concrete in the described step (3).
7. concrete spraying steel mesh sandwich template cast-in-place shear wall job practices as claimed in claim 6, the form that specifically is provided with that it is characterized in that described connecting reinforcement assembly is: every group of described connecting reinforcement assembly is by main muscle and socket steel plate and form, the described quantity that sockets steel plate is two, lay respectively at the inboard of the light plate of described inboard steel mesh sandwich and the outside of the light plate of described outside steel mesh sandwich, the quantity of described main muscle is one or more, described many main muscle rotations are symmetrically distributed and leave distance each other, the two ends of described main muscle run through respectively described in, the light plate of outside steel mesh sandwich, and be welded in the outside of the inboard of the light plate of described inboard steel mesh sandwich and the light plate of outside steel mesh sandwich and socket accordingly on the steel plate, in described, transverse weld one place or many places are strengthened stirrup and/or are connected with the cage shape silk screen that surrounds described main muscle on the described main muscle between the light plate of outside steel mesh sandwich, described cage shape silk screen by vertically to or oblique dowel fixedly connected with described main muscle, opposite along the incline direction of the adjacent described oblique dowel on the main muscle direction, one end of described dowel is welded on the main muscle or on the described stirrup, the other end is welded on the crosspoint or silk screen skeleton of described cage shape silk screen, described reinforcement stirrup sockets the outside of main muscle around each root, stirrup is strengthened along the described longitudinal separation setting that sockets main muscle in described many places, describedly socket main muscle and be one or more groups, the steel plate that sockets that is positioned at the same side that belongs to not connecting reinforcement assembly on the same group is separately independently or organize one more.
8. a concrete sprays steel mesh sandwich template cast-in-place shear wall, it is characterized in that being provided with the light plate of inside and outside steel mesh sandwich, layer of concrete in the middle of having built between the light plate of described inside and outside sandwich is coated with medial and lateral surface concrete layer respectively on the medial surface of the lateral surface of the light plate of described outer sandwich and the described interior light plate of sandwich.
9. concrete spraying steel mesh sandwich template cast-in-place shear wall as claimed in claim 8, it is characterized in that described in, steel mesh sandwich light plate in the outside is configured to by organic foam plastic plate and three dimensions welded wire fabric, described three dimensions welding wire rack comprise lay respectively at described organic foam plastic plate both sides in, the outerplanar gauze wire cloth with a plurality of be used to be connected described in, the connection steel wire of outerplanar gauze wire cloth, described connection steel wire runs through described organic foam plastic plate, the fixedly connected described inner plane gauze wire cloth of one end, the fixedly connected outerplanar gauze wire cloth of the other end, described a plurality of connection steel wire is regularly arranged in length and breadth, and two adjacent arbitrarily bearing of trends that connect steel wire are the different surface beeline relation.
10. concrete spraying steel mesh sandwich template cast-in-place shear wall as claimed in claim 9, it is characterized in that also being provided with many group connecting reinforcement assemblies, every group of described connecting reinforcement assembly is by main muscle and socket steel plate and form, the described quantity that sockets steel plate is two, lay respectively at the inboard of the light plate of described inboard steel mesh sandwich and the outside of the light plate of described outside steel mesh sandwich, the quantity of described main muscle is one or more, described many main muscle rotations are symmetrically distributed and leave distance each other, the two ends of described main muscle run through respectively described in, the light plate of outside steel mesh sandwich, and be welded in the outside of the inboard of the light plate of described inboard steel mesh sandwich and the light plate of outside steel mesh sandwich and socket accordingly on the steel plate, in described, transverse weld one place or many places are strengthened stirrup and/or are connected with the cage shape silk screen that surrounds described main muscle on the described main muscle between the light plate of outside steel mesh sandwich, described cage shape silk screen by vertically to or oblique dowel fixedly connected with described main muscle, opposite along the incline direction of the adjacent described oblique dowel on the main muscle direction, one end of described dowel is welded on the main muscle or on the described stirrup, the other end is welded on the crosspoint or silk screen skeleton of described cage shape silk screen, described reinforcement stirrup sockets the outside of main muscle around each root, stirrup is strengthened along the described longitudinal separation setting that sockets main muscle in described many places, describedly socket main muscle and be one or more groups, the steel plate that sockets that is positioned at the same side that belongs to not connecting reinforcement assembly on the same group is separately independently or organize one more.
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| CN2011100700804A CN102182317A (en) | 2011-03-18 | 2011-03-18 | Concrete spray steel mesh sandwich formwork cast-in-place shear wall construction method and shear wall |
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| CN103243915A (en) * | 2013-04-28 | 2013-08-14 | 浙江宝业建设集团有限公司 | Formwork removing and hole sealing method for closed box-shaped structural concrete |
| CN103924714A (en) * | 2014-03-18 | 2014-07-16 | 昆山生态屋建筑技术有限公司 | Wire mesh integral-frame building wall and manufacture process thereof |
| CN103924711A (en) * | 2014-05-01 | 2014-07-16 | 西安科技大学 | Assembled type gridding shearing wall structural system and construction technology of assembled type gridding shearing wall structural system |
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| CN105715052B (en) * | 2016-03-08 | 2019-01-22 | 北京市华商腾达工贸有限公司 | The house the 3D printer and Method of printing of construction site printing concrete |
| CN106639070A (en) * | 2017-02-16 | 2017-05-10 | 青岛实大传伟节能科技有限公司 | Assembly-type double template inner connection set for cast-in-situ wall body |
| CN113431329A (en) * | 2021-05-10 | 2021-09-24 | 浙江交工宏途交通建设有限公司 | Circular truncated cone type hollow variable cross-section reinforced concrete pouring method |
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Application publication date: 20110914 |