CN2246688Y

CN2246688Y - Single-layer laminated reinforced concrete arch cover

Info

Publication number: CN2246688Y
Application number: CN 95214448
Authority: CN
Inventors: 兰中平
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-06-08
Filing date: 1995-06-08
Publication date: 1997-02-05
Anticipated expiration: 2005-06-08

Abstract

The utility model relates to a single-layer laminated reinforced concrete arch cover, which is composed of an upper chord of a reinforced concrete parabolic shape, a post tensioning type prestressing pull rod and an anchor device. The single-layer laminated reinforced concrete arch cover is characterized in that the upper chord of the reinforced concrete is laminated, and a cross section of the upper chord of the arch cover has a downward opening and forms a groove shape; longitudinal ribs with wide upper parts and narrow lower parts have three to six strips, the upper surface of a prefabricating plate of a laminated wing plate is provided with nicking, reinforced bars on two plate ends supported on the longitudinal ribs are exposed to thirty to fifty mm, the exposed reinforced bars are spot welded and poured into a pouring layer to form an integral body. A pier head of the pull rod is connected with an inner anchor ring which is connected with a notch which is arranged on an outer anchor ring, and the outer anchor ring of the anchor device is a mono-body type or a union body type. The single-layer laminated reinforced concrete arch cover has the advantages of large rigidity, simple structure, material saving, favorable water-proof performance, and high safety; the single-layer laminated reinforced concrete arch cover can be produced in lamination, and can be used for various industrial factory buildings.

Description

Individual layer superposed type steel bar concrete arch bar

The utility model relates to a kind of roof of buildings member, is specifically related to the large-scale roofing arch bar of individual layer superposed type steel bar concrete.

Arch bar is a kind of novel grillage unification member that occurs after v-shaped folded plate, it can reduce kind and the quantity and the construction hoisting operation of structural element, there is stress performance reasonable again, structure height is little, the space good rigidity, advantages such as material usage province generally are used to not have at present crane or less factory building and the warehouse of crane tonnage.What wherein application was wider is dull and stereotyped lower edge arch bar and the double-deck pull rod arch bar that the Heilongjiang Province successively succeeds in developing, and winding up of these two kinds of arch bars all is parabola shaped.The top chord section of dull and stereotyped lower edge arch bar is the downward flute profile of notch, and the level board that winds up and make progress for notch is linked to be integral body with giving system dividing plate and brace between last lower edge, its advantage is that heat-proof quality is good, ceiling is the plane, but also has following problem, the one, and the formwork complexity, long construction period, the material consumption amount is big, and the 2nd, when cast-in-place arch bar was worked, lower edge stretched, body of wall is produced thrust, cause the trickle level cracking of the normal generation of bead place body of wall.The double-deck pull rod arch bar does not have the lower edge flat board, and replace with pull bar, winding up is box section, and it has the laminated production of energy, and ceiling is the advantage on parabola shaped plane, but the material consumption amount is big, from great, the cost height requires high to lifting machine, it is also uneconomical that this plate is applied to not have the general industry factory building of specific (special) requirements, causes waste of material.

The purpose of this utility model has provided the large-scale roofing arch bar of a kind of individual layer superposed type steel bar concrete, and is simple in structure, and materials are economized, and from heavy and light, rigidity is big, solved the problem of the laminated production of individual layer arch bar energy.

For achieving the above object, the utility model has adopted following technical scheme: 1, wind up and adopt the channel section that Open Side Down, wing plate adopts compound slab, wing plate is watered at twice smash concrete, prefabricated at the scene for the first time (also can in factory's system of giving) tablet, after installing on the vertical rib, water the concrete on the tamping iron again, make plate and vertical rib be linked to be integral body, co-operation, give the system flat board and replaced wooden form, Cast-in-place concrete has the effect of rigid waterproof layer again.2, adopt post stretching to apply to pull bar and give stress, reduce to wind up amount of deflection and wind up in the moment of flexure of lower end, cross section tension, for reducing material usage, reduce the cross section section and create conditions.It mainly winds up, gives the stress pull bar by steel bar concrete and ground tackle constitutes, it is characterized in that the arch bar top chord section is flute profile for Open Side Down, vertical rib is wide at the top and narrow at the bottom to be the 3-6 bar, the edge of a wing that parabola winds up is a superimposed sheet, the dull and stereotyped upper surface of the system of giving of superposed type wing plate has indentation, is supported on two plate end bars on the vertical rib 30-50mm that appears, flat board is installed after, the surface layer concrete is watered in the reinforcing bar spot welding of will appearing then.Distance is provided with the cross rib vertical with vertical rib at regular intervals, and parabola winds up level board that two ends make certain-length as the bead draining, and parabola winds up on the seat beam to give by designing requirement and stays pull bar to penetrate the hole, and pull bar employing post stretching applies gives stress.When parabola winds up after concrete reaches intensity, penetrate pull bar and stretch-draw, reach give the stress requirement after, the ground tackle anchoring is installed, can lift.The ground tackle of arch bar is by the outer shroud of keyhole periphery band garden shape notch, and ring composition in half garden of two band tenons reaches the purpose of anchoring by being stuck in interior ring between outer shroud and the pull bar pier nose.Another feature be when pull bar be the 2-3 root, outer shroud is Contiuum type, improve the local compressive property of anchorage zone concrete, the general single storey industry workshop and the warehouse standard width of a room in an old-style house are little, and all have the evagination pilaster, and the arch bar width can be with standard width of a room in an old-style house width, after the arch bar lifting, ground tackle is positioned at the pilaster top, and available concrete tamps, and reaches the purpose that prevents ground tackle corrosion and facade neat appearance.

Below in conjunction with accompanying drawing the utility model is described in further detail:

Fig. 1 is an individual layer superposed type reinforced concrete arch plated construction schematic diagram.

Fig. 2 is the individual layer superposed type steel bar concrete arch bar sectional drawing that winds up.

Fig. 3 is an individual layer superposed type reinforced concrete arch beaverboard anchorage schematic diagram.

Known to Fig. 1-3, the parabola of individual layer superposed type steel bar concrete arch bar winds up 1 by vertical rib 5, cross rib 6, and system of giving dull and stereotyped 7 and rear pouring concrete layer 8 and both ends are propped up seat beam 4 and formed.The span of individual layer superposed type steel bar concrete arch bar is 12-24m, and wide standard width of a room in an old-style house modulus and the span according to building of plate comprehensively determined the wide 3.6m of minimum plate.Vertical rib 5 general 3-6 bars, vertical rib 5 is suitable for reading than the wide 10-20mm of end opening, is convenient to install prefabricated dull and stereotyped 7 and the integrality that keeps indulging rib 5.Cross rib is the system of giving, spacing 3-6m, and with vertical rib 5 vertical settings, cross rib 6 length are than the long 10-20mm of vertical rib 5 clear spacings suitable for reading, and the rib height ratio is indulged the rib rib 20-30mm of higher primary school, is convenient to the colligation reinforcing bar with longitudinal ribs.The dull and stereotyped 7 wide 500mm of the system of giving, length is than the big 10-20mm of vertical rib 5 clear spacings suitable for reading, and prefabricated dull and stereotyped 7 upper surfaces have indentation, are supported on two plate end bars on the vertical rib 5 30-50mm that appears, mutual spot welding after installing.The system of giving dull and stereotyped 7 was used as the template of rear pouring concrete layer 8 in arch bar construction period, after construction finishes and rear pouring concrete layer 8 co-operation together.Rear pouring concrete layer 8 can not only will be indulged rib 5, and the system of giving dull and stereotyped 7 is linked to be integral body, and co-operation makes arch bar have good rigidity, and has the effect of rigid waterproof layer.Seat beam 4 is provided with to give in the bottom surface, two ends and buries steel plate, and the ironware welding is buried in giving on arch bar lifting back and body of wall, arch bar and body of wall is fused, the space rigidity and the shock resistance of enhancing building.Seat beam 4 two ends also should be stayed and give 2 perforation of stress pull bar, and its aperture should be than the big 2-5mm of diameter that gives the tie rod end pier nose 9 on the stress pull bar 2.The every side of pull bar is the 1-3 root, can adopt cold extrusion or welding spreading, and the spacing of giving the tie rod end pier nose 9 on the stress pull bar 2 is to guarantee to set up required key of giving stress, therefore, except that determining in strict accordance with theory calculating, also should do examination and draw adjustment.Tie rod end pier nose 9 links to each other with interior anchor ring 10, and the pressure-bearing surface of tie rod end pier nose 9 should be burnishing surface and guarantees that power transmission is reliable.Ground tackle 3 is made up of interior ring 10 and outer shroud 11, the notch that interior anchor ring 10 is positioned at outer anchor ring 11 links to each other, interior anchor ring 10 is made up of half garden shape of two band tenons, outer anchor ring 11 can be monomer-type, Contiuum type, during construction, outer anchor ring 11 is penetrated tie rod end, behind the stretch-draw pull bar, anchor ring 10 in filling in gets final product anchoring.

Individual layer superposed type steel bar concrete arch bar construction technology is as follows:

1, makes the ground loose tool, should guarantee the accurate of physical dimension.

2, give system flat board and cross rib.Dull and stereotyped upper surface is answered indentation, is supported on two plate end bars on the vertical rib 30-50mm that appears, the cross rib two end bars 40-50mm that appears, or stay and expose crotch.

3, vertical rib template and assembling reinforcement are installed, cross rib are installed and the reinforcing bar spot welding or expose the crotch colligation of will appearing, water a vertical rib bridging piece and a seat beam concrete.Attention is given the grafting reinforcing bar that stays plate face steel mesh reinforcement in a seat beam.

4, install dull and stereotyped and the mutual spot welding of reinforcing bar of will appearing, assembling reinforcement net on the flat board waters and smashes the rear pouring concrete layer.

5, after the rear pouring concrete layer reached certain intensity, the shop isolated material repeated the 3-4 step, next piece arch bar of laminated production.

6, pull bar is done pier nose and spreading, treat that the arch bar concrete reaches design strength after, wear pull bar and anchoring one end, the other end gives stress tension, reach design and give anchoring after the stress requirement, lifting subsequently, and will prop up the embedded part that gives corresponding on the seat beam with arch bar and weld along giving embedded part on the wall.

The utility model has the advantages that: laminated production, it is little to take the construction site, simple in structure, Reasonable in design, material usage is economized, and member dead weight is light, and rigidity is big, and water resistance is good, economy Be suitable for, safe and reliable, be applicable to various industrial premises.

Claims

1, a kind of individual layer superposed type steel bar concrete arch bar, it winds up (1), gives stress pull bar (2), ground tackle (3), seat beam (a 4) formation by parabola, it is characterized in that the arch bar top chord section is the wind up wing plate of (1) of flute profile, parabola for Open Side Down be superimposed sheet, tie rod end pier nose (9) links to each other with interior anchor ring (10).

2, a kind of individual layer superposed type steel bar concrete arch bar according to claim 1 is characterized in that dull and stereotyped (7) upper surface of the system of giving of superposed type wing plate has indentation.

3, a kind of individual layer superposed type steel bar concrete arch bar according to claim 1, it is characterized in that ground tackle (3) is interior ring (10) and outer shroud (11), interior anchor ring (10) is positioned at the notch of outer anchor ring (11), and interior anchor ring (10) is the semicircle of two band tenons, and outer anchor ring (11) is and connects formula.