CN2108769U

CN2108769U - Large sized glass steel form

Info

Publication number: CN2108769U
Application number: CN 91232792
Authority: CN
Inventors: 丁志文; 季欣
Original assignee: BEIJING INST OF ACHITECTURE ENGINEERING
Current assignee: BEIJING INST OF ACHITECTURE ENGINEERING
Priority date: 1991-12-28
Filing date: 1991-12-28
Publication date: 1992-07-01

Abstract

The utility model discloses a large sized integrative glass steel form for manufacturing floors, ceiling boards or roofs, which is composed of a shell, bottom edge core-added ribs (1), side face core-added ribs (2) and top face core-added ribs (3) which are arranged on the shell. The form is 1.425 m in length and width, and is 0.5 cm in thickness. The top of the form is provided with core-added ribs in the shape of Chinese character min', which solves the problem that the center of the top of the large sized form has oversized deformation due to deficient stiffness when the large sized form is used in construction. The large sized integrative glass steel form decreases the use amount of the form and the dosage of a support system, and increases the useful space of construction. The use turnover of the utility model reaches to 100 times.

Description

Large sized glass steel form

The utility model belongs in order to make the formwork technical field that floor, ceiling or roof are used.

Formwork is the particular manufacturing craft of concrete cast-in-situ ribbed slab floor in housing construction.The difference of formwork specification directly influences weight and the appearance effect after the floor moulding.In general, the rib of ribbed slab floor is apart from bigger, and materials are then more economized, and the usefull space of floor is also bigger, and economic benefit also just significantly.And at present the formwork that uses of China no matter be plastics or glass fiber reinforced plastic, its overall dimensions all is no more than 1.2 meters * 1.2 meters.If the described polypropylene plastics unit combination of CN85200560 patent is got up to make the whole formwork of large scale, need possess corresponding mould, and the expense of a mould just accounts for more than 400,000 yuan.In use reinforce though next is at present existing 1.2 meters * 1.2 meters plastic form, still exist the problem of intensity, rigidity difference through angle steel.According to ground units in charge of construction such as Beijing, Tianjin statistics, the breakage rate of plastic form is 40%～50%.Continue to the large scale development if this shows plastic form, the weakness of its intensity, rigidity difference certainly will be more outstanding.Through comparing, the intensity of frp mould and rigidity are at the next plastic form that is better than of same size condition, and die cost also low (changing only hundreds of unit of a mould).Therefore it is suitable making large-sized formwork with glass fiber reinforced plastic.But the ribbed slab floor rib is after strengthen, and the strength and stiffness of formwork are required just must correspondingly improve.If formwork still adopts structure in the past, can not satisfy instructions for use.

At above-mentioned situation, the utility model provides a kind of improved large scale whole frp mould.This formwork is made of the core rib that adds on housing and the housing, can be engaged in the concrete pouring operation of 1.5 meters ribs apart from in-situ ribbed slab under the thickness of shell condition not increasing.

The utility model is realized in the following manner.After formwork was amplified, in use the distortion of permissible value can appear surpassing because of rigidity in its top center place inadequately.And the parallel rib at formwork top is difficult for reducing the distortion of this center.If make parallel rib into well word diagonal ribs, not only can make the complex proceduresization that pastes of formwork, increase drain on manpower and material resources, and the formwork inner surface belt of making is jagged, prick the hand during construction, can't use.Through comparing and test, adopt the M shape rib the most suitable at the top of large-size glass punching block shell.The complicated process that formwork pastes work has not only been eliminated in the setting of M shape rib, has guaranteed the rigidity at formwork top center place simultaneously again.Under the situation that does not increase shell thickness, can realize the purpose of the making and the use of large scale formwork.Below in conjunction with accompanying drawing embodiment of the present utility model is described further.

Fig. 1 is a large-size glass punching block shell cross-sectional configuration schematic diagram.

Fig. 2 adds the schematic diagram that is provided with of core rib for large-size glass punching block shell end face.

See figures.1.and.2, large-size glass punching block shell adds core rib (1), side by the base on housing and the housing and adds core rib (2) and end face and add core rib (3) and constitute.The length of formwork and width are 1.425 meters, and height is 0.45 meter, 0.5 centimetre of wall thickness.The base of formwork adds its sectional dimension of core rib (1) and is increased to 50 * 55 centimetres.Can guarantee the bulk strength and the rigidity of formwork like this.The rib distance that the side adds core rib (2) is 380 centimetres.End face adds core rib (3) and is arranged to M shape, to be used to strengthen the rigidity of formwork center.In order to improve form removal efficient, reduce labor strength, the injecting hole (4) of a pneumatic form removal also is equipped with at the formwork top.In addition, two sides of formwork respectively are provided with a manual form removal device (5), so that pneumatic form removal can be pulled down formwork by this device can't implement the time.

The utility model test result is as follows: bending strength is 174MPa; When proof load (K=1), the formwork central vertical is deformed into 1.70 millimeters, and when load factor K=3, the formwork central vertical is deformed into 3.63 millimeters, does not all surpass the regulation that allows 4 millimeters of distortion.In addition, with the usage quantity and the concrete consumption of this formwork construction can minimizing formwork, the also corresponding minimizing of quantity of support system simultaneously, it uses turnover can reach 80～100 times, and economic benefit is considerable.

Claims

1, a kind of large-size glass punching block shell adds core rib (1), side by the housing of frp mould and the base on the housing and adds core rib (2) and end face and add core rib (3) and constitute, and it is characterized in that:

The length of a, formwork and width are respectively 1.425 meters;

The sectional dimension that b, base add core rib (1) is 50 * 55 centimetres;

C, end face add core rib (3) and are arranged on the formwork top inner surface by " rice " glyph construction.