CN102454239A

CN102454239A - Precast slab construction member

Info

Publication number: CN102454239A
Application number: CN2011104127008A
Authority: CN
Inventors: 李智能
Original assignee: China Metallurgical Construction Engineering Group Co Ltd
Current assignee: China Metallurgical Construction Engineering Group Co Ltd
Priority date: 2011-12-13
Filing date: 2011-12-13
Publication date: 2012-05-16

Abstract

The invention relates to a precast slab construction member, which belongs to the field of building members. The precast slab construction member comprises an upper layer reinforcing mesh and a lower layer reinforcing mesh, wherein both the upper layer reinforcing mesh and the lower layer reinforcing mesh comprise transverse bars and longitudinal bars which are arranged parallelly at intervals and are intersected and welded at intersection points; shear nails are welded between the upper layer reinforcing mesh and the lower layer reinforcing mesh; and the lower layer reinforcing mesh is buried into concrete. Due to the precast slab construction member, a bottom slab die is not needed to be supported, reinforcing bars of a floor are fully precast into a whole body by a precasting factory, the production and mounting rates are high, and the overall intensity is high, and thus the problems that the bottom slab die is needed to be supported, the reinforcing bars of the floor are bound on site, and the construction rate is low in the prior art are solved.

Description

A kind of precast plate construction member

Technical field

The present invention relates to a kind of building unit, relate in particular to a kind of precast plate construction member.

Background technology

The floor upper half area of high-rise building is mainly born pressure, is called pressure zone, and half area is mainly born pulling force, is called the tensile region.At present; The floor of building high-rise building has multiple mode, and a kind of mode is a cast-in-place concrete, and working procedure roughly is that support plate bed die, hot-water heating fulgurite box location, colligation plate bottom reinforcement bars, bottom reinforcement bars install sand oar cushion block, electrical wiring pipe, colligation plate upper reinforcement, inspect for acceptance, concrete pouring; Wherein support plate bed die engineering quantity is big; Need cost a large amount of template, manual work, and construction sequence and complex management, construction cost is high.Another kind of mode is to adopt the prefabrication concrete structure member, site assembly and cast-in-place node, though this mode speed is fast, member is heavy, and very inconvenience of lifting and transportation, structure connects trouble.China utility model patent CN2407059Y discloses a kind of prestressing force and non-prestressed laminated floor slab; This floor is formed by prefabricated superimposed sheet and overlapping layers stack combinations; Between the node of superimposed sheet and limit bearing and intermediate support, be merely superimposed relation between superimposed sheet and the overlapping layers; Do not have fluid concrete, globality is poor, poor seismic behavior.Chinese invention patent CN102011446A discloses a kind of half precast floor unit of using in the on-the-spot formwork construction mode of exempting from, and this floor member comprises main muscle, arrangement of reinforcement and waveform muscle, all crisscross laying of main muscle and arrangement of reinforcement; The trough of waveform muscle and a horizontal main muscle welding, with the vertical muscle welding of parallel many of passing, the following half-wave of waveform muscle is embedded in the layer of concrete; Last half-wave is exposed at outside the layer of concrete, and this floor member is made by precast yard in advance, lift on the building frame after; Continue the main muscle and the arrangement of reinforcement of colligation floor pressure zone, the first half of pouring into a mould floor then, this floor member has solved the problem that need not the support plate bed die; But the main muscle of floor pressure zone and arrangement of reinforcement still need colligation at the construction field (site); Do not realize that member is prefabricated by precast yard fully, realize industrialization production, and only on horizontal main muscle, be provided with the waveform muscle; Do not have the waveform muscle on the lengthways main steel bar, can not play good supporting role the laying of pressure zone reinforcing bar.

Summary of the invention

The problem that the present invention will solve is, a kind of base plate mould that need not is provided, and the reinforcing bar of floor is prefabricated into integral body by precast yard fully, produces, installation rate is fast, the board member that bulk strength is high.

In order to solve the problems of the technologies described above, the present invention provides following technical scheme:

A kind of precast plate construction member; Comprise precast concrete floor base plate, top mat, lower floor's steel mesh reinforcement; Said top mat and lower floor's steel mesh reinforcement include horizontal bar and vertical muscle; Horizontal bar intersects with vertical muscle and is connected in the intersection, is provided with the welding WELDING STUDS between said top mat and the lower floor's steel mesh reinforcement, and said lower floor steel mesh reinforcement is embedded in the precast concrete floor base plate.

Use the present invention that following technique effect is arranged:

1, the horizontal bar of the upper and lower layer of member steel mesh reinforcement is connected (comprising conventional connected modes such as welding or colligation) one-tenth and is fixed into netted with vertical muscle; Form an integral body through the welding WELDING STUDS again between the upper and lower layer steel mesh reinforcement; Whole member does not need secondary reinforcement; Practiced thrift material, can weld at interval as required during welding, needn't weld each intersection point.

2, the horizontal and vertical WELDING STUDS that all welds of upper and lower layer steel mesh reinforcement, WELDING STUDS is good to the supporting role of top mat, and is strong to the effect of lower floor's steel mesh reinforcement Transfer of Shear.

3, lower floor's steel mesh reinforcement is embedded in the precast concrete floor base plate; The job site need not a base plate mould, and the precast concrete floor base of precast yard's cast is smooth, be installed to frameworks such as beam, post after; Need not to plaster, levelling, practiced thrift material and manual work.And only pour into a mould lower floor's steel mesh reinforcement, make the weight of whole member be convenient to transportation and installation, after the top mat of cast does not treat that member is in place, pour into an integrated entity with beam, post etc., make seamless link between member and beam, the post, bulk strength is high, and anti-seismic performance is good.

4, member is prefabricated by precast yard fully, and speed of production is fast, and quality is good, can realize industrialization production.

Further; In order to make the network good stability of upper and lower layer steel mesh reinforcement; The deformation that when member bears all directions pressure, produces is little; And easy to process, the spacing between the said upper and lower layer steel mesh reinforcement horizontal bar equates that with the spacing between the vertical muscle horizontal bar of said upper and lower layer steel mesh reinforcement is vertical with vertical muscle.

Further, in order to make the WELDING STUDS Stability Analysis of Structures, and simple shape, be easy to make, practice thrift the reinforcing bar material, said WELDING STUDS is V-shaped.

Description of drawings

Below in conjunction with accompanying drawing and embodiment technical scheme of the present invention is further specified:

Fig. 1 is the vertical view of a kind of precast plate construction member of the present invention embodiment one;

Fig. 2 is the not transverse views during fluid concrete of Fig. 1;

Fig. 3 is the transverse views behind Fig. 1 fluid concrete;

Fig. 4 is the vertical view of embodiment two;

Fig. 5 is the not vertical view during fluid concrete of Fig. 4;

Fig. 6 is the not transverse views during fluid concrete of Fig. 4;

Fig. 7 is the transverse views behind Fig. 4 fluid concrete.

The specific embodiment

Below through concrete embodiment technical scheme of the present invention is further described.Following examples do not constitute qualification of the present invention.

Embodiment one:

Like Fig. 1, Fig. 2 and shown in Figure 3, a kind of precast plate construction member comprises top mat and lower floor's steel mesh reinforcement, and upper and lower layer steel mesh reinforcement formed by horizontal bar 1 and vertical muscle 2; Horizontal bar 1 is all selected the HRB500 hot rolled ribbed steel bar with vertical muscle 2, and diameter is 15mm, and yield strength is not less than 500Mpa, earlier parallel laying horizontal bar 1; Muscle 2 is indulged in parallel again laying, and horizontal bar 1 and vertical muscle 2 are intersected, and intersection point place angle is 90 degree; The welding of intersection point place is fixing, perhaps lays vertical muscle 2 earlier, lays horizontal bar 1 again; Upper and lower layer steel mesh reinforcement cloth after the same method is set as same wire side, selects lower floor's steel mesh reinforcement to do the bottom surface then, welding WELDING STUDS 4; WELDING STUDS 4 is welded by two reinforcing bars, and an end of two reinforcing bars is welded together the top of forming WELDING STUDS 4, and two points of bottom horizontal bar 1 or vertical muscle 2 with lower floor's steel mesh reinforcement welded; The top of WELDING STUDS 4 and top mat welding are fixing, and WELDING STUDS 4 evenly is laid between the upper and lower layer steel mesh reinforcement, just can fluid concrete after fixing.In factory, concrete is only poured into a mould the mesh portion that lower floor's steel mesh reinforcement horizontal bar 1 and vertical muscle 2 surround, thereby forms precast concrete floor base plate 5, and the remainder reinforcing bar gives over to the usefulness of partly installing with beam, post; After being installed to said precast plate construction member on beam, the post on-site; Begin to pour into a mould the concrete of remainder; Select the gas concrete cast this moment for use, the invar muscle surrounds latticed, can select during cast from a part of grid cast gas concrete; Gas concrete can alleviate the floor deadweight, also has effect heat insulation, insulation simultaneously.

Embodiment two:

Like Fig. 4, Fig. 5, Fig. 6 and shown in Figure 7, the reinforcing bar of selection and embodiment one same material uses the same method and lays horizontal bar 1 and vertical muscle 2; Because the floor top area is a pressure zone, lower region is the tensile region, and the big pulling force of the pressure that pressure zone receives is little; So the density of top mat should be less than lower floor's steel mesh reinforcement, be four times of layings of lower floor's steel mesh reinforcement by the spacing of top mat, after two-layer steel mesh reinforcement is all laid; Select lower floor's steel mesh reinforcement to do the bottom surface, welding WELDING STUDS 3, WELDING STUDS 3 is by two reinforcing bar welding precedent V-arrangements; One end of two reinforcing bars is welded together the top of forming WELDING STUDS 3, two points of bottom and a

horizontal bar

1 or 2 welding of vertical muscle of lower floor's steel mesh reinforcement, the top of WELDING STUDS 3 is welded with top mat and is fixed; For top and the top mat that makes WELDING STUDS 3 has point of contact, when lower floor's steel mesh reinforcement is made bottom surface welding WELDING STUDS 3, preferably earlier with WELDING STUDS 3 tops and top mat welding; Again with bottom and lower floor's steel mesh reinforcement welding; The top that can guarantee each WELDING STUDS 3 like this can be welded with top mat, can waste material, with the steel mesh reinforcement welding good after; Just can form precast concrete floor base plate 5 by fluid concrete, the formation method of precast concrete floor base plate 5 is identical with embodiment one.

The method for using of a kind of precast plate construction member of the present invention: after the prefabricated profiled plate construction member of precast yard is transported to the building site; Earlier it is lifted on beam, the post, the reinforcing bar of reserving on the reinforcing bar of reserving and beam, the post is welded into integral body, hydroelectric line is installed then; After installing; Begin to pour into a mould the concrete on floor top, make itself and bottom concrete and beam, post form integral body, thereby improve overall performance.

Above embodiment only explains concrete application of the present invention; Can not be interpreted as qualification to protection domain of the present invention; So long as adopt technical scheme of the present invention; Perhaps only be to change or distortion, all fall among protection scope of the present invention through the routine that those of ordinary skill in the art can both make.

Claims

1. precast plate construction member; It is characterized in that: comprise precast concrete floor base plate, top mat, lower floor's steel mesh reinforcement; Said top mat and lower floor's steel mesh reinforcement include horizontal bar and vertical muscle; Horizontal bar intersects with vertical muscle and is connected in the intersection, is provided with the welding WELDING STUDS between said top mat and the lower floor's steel mesh reinforcement, and said lower floor steel mesh reinforcement is embedded in the precast concrete floor base plate.

2. a kind of precast plate construction member as claimed in claim 1 is characterized in that: the spacing between the said upper and lower layer steel mesh reinforcement horizontal bar equates that with the spacing between the vertical muscle horizontal bar of said upper and lower layer steel mesh reinforcement is vertical with vertical muscle.

3. a kind of precast plate construction member as claimed in claim 2, it is characterized in that: said WELDING STUDS is V-shaped.