A kind of construction formwork of overhang layer exterior wall preformed hole and construction method
Technical field
The present invention relates to a kind of construction formwork and construction method of overhang layer exterior wall preformed hole, belong to construction formwork technical field of construction.
Background technology
In the promoting the use of of aluminum alloy mould plate, the collocation monolithic outrigger that climbs often can coordinate external wall to intert construction preferably, but due to the climb lease expenses of outrigger of monolithic high, job site adopts steel pipe outrigger to coordinate aluminum alloy mould plate construction usually.When adopting the construction of steel pipe outrigger to outrigger overhang layer, the hole that channel-section steel is placed must be reserved bottom exterior wall shear wall.In traditional construction method, employing be carry out pre-buried with foam bottom exterior wall shear wall, after exterior wall form removal, empty hole again.On the one hand, light and the strength deficiency of quality due to foam, often wall column concrete vibrate construction process in produce the phenomenon such as skew, distortion, reserved opening size and positioning requirements can not be met, and the later stage needs the hole less than normal to size to carry out cutter to beat, and pre-buried foam needs to empty, foam bits scrappy in a large number can be produced at floor and be difficult to cleaning; On the other hand, because of the requirement of working procedure, running into rack-layer construction of encorbelmenting then needs to stop to return outrigger to take, and this not only adds outrigger construction and returns the workload of taking, and create impact to the progress of construction.Thus, the improvement of conventional construction method is extremely urgent.
Summary of the invention
The object of the invention is to, there is provided that a kind of structure is simple, easy construction, environmental protection, saving construction cost, and can ensure that preformed hole size meets construction formwork and the construction method of the overhang layer exterior wall preformed hole of construction requirement, to overcome prior art deficiency.
Technical scheme of the present invention: a kind of construction formwork of overhang layer exterior wall preformed hole, comprises the cope match-plate pattern be arranged side by side, be removably connected with little jigsaw or/and be provided with tub in the lower end of cope match-plate pattern.
Further, be provided with dock at the link of cope match-plate pattern and little jigsaw, cone pin is through after the through hole on dock, and cone pin sheet inserts in the cone tank of cone pin lower end, and cope match-plate pattern and little jigsaw are removably connected.
Aforesaid cope match-plate pattern and little jigsaw are aluminium alloy structure.
The size of aforesaid little jigsaw is consistent with the cross section of tub.
A kind of construction method adopting the construction formwork of above-mentioned overhang layer exterior wall preformed hole to make overhang layer exterior wall preformed hole, comprise existing aluminum alloy mould plate construction method, first cope match-plate pattern and little jigsaw are assembled into detachable aluminum alloy mould plate, then detachable aluminum alloy mould plate is propped up side by side and be located at overhang layer exterior wall both sides, then the little jigsaw being arranged on overhang layer exterior wall preformed hole place is removed, tub is packed in the space stayed after little jigsaw is removed simultaneously, now just can vibrate to concreting in the template installed, reach after design strength until concrete, template and tub are removed, the position can removed at tub like this obtains preformed hole.
In said method, the cross section of described tub and the in the same size of preformed hole.
Owing to adopting technique scheme, the invention has the advantages that: aluminum alloy mould plate is divided into cope match-plate pattern and little jigsaw according to the size of preformed hole by the present invention, when typical floor is constructed, cope match-plate pattern and little jigsaw are assembled into detachable aluminum alloy mould plate and normal construction; When running into the overhang layer exterior wall needing pre-buried channel-section steel, remove needing the little jigsaw offering preformed hole place, tub is packed in the space stayed after little jigsaw is removed simultaneously, removed by tub after exterior wall concrete reaches design strength like this, the position can removed at tub obtains preformed hole again.Therefore, namely template of the present invention can be used as standard form and uses, be convenient to preformed hole construction again, there is the function of dual-use material, and the present invention adopts tub to clog preformed hole, thus the foam that instead of in conventional method is pre-buried, thus solves in conventional construction method preformed hole and produce the problems such as skew, distortion and floor foam pollution, ensure that preformed hole size can meet construction requirement.In addition, when adopting method of the present invention to construct, return take without the need to carrying out outrigger, not only reduce the labour intensity of workman, accelerate construction speed, and save construction cost, improve efficiency of construction.
Accompanying drawing explanation
Structural representation when Fig. 1 is the invention process;
Fig. 2 is the B-B sectional view of Fig. 1;
Fig. 3 is the A-A sectional view of Fig. 1.
Description of reference numerals: 1-cope match-plate pattern, the little jigsaw of 2-, 3-dock, 4-cone pin, 5-cone pin sheet, 6-tub, 7-overhang layer exterior wall.
Detailed description of the invention
In order to make the object of the invention, technical scheme and advantage clearly, below in conjunction with accompanying drawing, the present invention is described in further detail.
The structural representation of the construction formwork of a kind of overhang layer exterior wall preformed hole of the present invention as shown in Figure 1, comprise the cope match-plate pattern 1 be arranged side by side, removably connect in the lower end of cope match-plate pattern 1 and little jigsaw 2, namely dock 3 is provided with at the link of cope match-plate pattern 1 and little jigsaw 2, cone pin 4 is through after the through hole on dock 3, cone pin sheet 5 inserts in the cone tank of cone pin 4 lower end, and cope match-plate pattern 1 and little jigsaw 2 are removably connected.Meanwhile, the position offering preformed hole is needed to be provided with tub 6 in the lower end of cope match-plate pattern 1.Described cope match-plate pattern 1 and little jigsaw 2 are aluminium alloy structure, and the size of little jigsaw 2 is consistent with the cross section of tub 6.
When adopting construction formwork of the present invention to make overhang layer exterior wall preformed hole, first cope match-plate pattern 1 and little jigsaw 2 are assembled into detachable aluminum alloy mould plate, then detachable aluminum alloy mould plate is propped up side by side and be located at overhang layer exterior wall 7 both sides, also detachable aluminum alloy mould plate matching standard aluminum alloy mould plate can be constructed, but detachable aluminum alloy mould plate need be arranged on preformed hole offers place.The little jigsaw 2 being arranged on overhang layer exterior wall 7 preformed hole place is removed, tub 6 is packed in the space stayed after little jigsaw 2 is removed, the described cross section of tub 6 and the in the same size of preformed hole simultaneously.Now just can vibrate to concreting in the template installed, reach after design strength, template and tub 6 are removed until concrete, the position can removed at tub 6 like this obtain preformed hole.