CN204715750U - Utilize the Combined formwork of square rod member - Google Patents

Abstract

The utility model relates to a construction formwork and aims to provide a combined formwork utilizing square rods. The formwork includes a transverse restraint device and a plurality of vertical rods arranged side by side, the cross section of the rods is square; each rod is provided with a transverse through hole, and is tensioned by a cable passing through the through hole; the transverse A restraint is arranged around the outside of each rod. This product can be reused. For rectangular concrete columns of different sizes to be reinforced, it is only necessary to increase or decrease rods, without further processing to make formwork; it can effectively save reinforcement costs, and the more concrete columns are reinforced, the more obvious the economic effect will be. It is convenient to obtain materials. The rods of the formwork can be made of wooden rods, aluminum alloy rods or other suitable materials; it is easy to carry, and the cables, rods and lateral restraint devices used as templates can be carried separately. Assembled on site.

Description

Modular formwork utilizing square bars

technical field

The utility model patent relates to a construction formwork, in particular to a combined formwork utilizing square rods.

Background technique

The most extensive type of structure in civil engineering is the concrete structure. If the concrete structure is properly designed, reasonable in structure and reliable in construction quality, it can have good durability under normal environmental conditions. However, when the above conditions are not met, it often affects the performance, durability and safety of the structure, thus causing major safety hazards. In the current concrete structure engineering, a large number of structural facilities need to be repaired and strengthened due to material aging, environmental corrosion, change of working load, natural disasters (earthquake, wind, etc.), corrosion of steel bars in concrete, and construction quality. The currently widely used reinforcement method is to use resin-based fiber reinforced composite materials (fiber reinforced polymer, FRP for short) to strengthen concrete structures.

In the reinforcement of concrete columns, the application of FRP confinement to increase its resistance and improve its deformation performance has received extensive attention from the engineering community. FRP has a good confinement effect on columns, but it has a poor confinement effect on rectangular concrete columns that exist in large quantities in projects. In order to solve this problem, many scholars have proposed circularization of rectangular concrete columns. The so-called circularization is to re-set the formwork on the outside of the existing rectangular concrete columns and then pour a certain amount of cement mortar or self-compacting concrete to make it The cross-section is changed from the original rectangle to ellipse or circle to improve the restraint effect of FRP. This method has been proved through a large number of analyzes and experiments that it is very effective in improving the restraint effect of FRP. However, due to the use of traditional wood or steel The arc-shaped formwork of the formwork is complicated to make, and it is labor-intensive, time-consuming, and cannot be reused, which restricts the application of the arc-shaped reinforcement method for rectangular concrete columns. Aiming at this problem, the utility model proposes a reusable, easy-to-manufacture, and easy-to-operate arc-shaped formwork.

Utility model content

The technical problem to be solved by the utility model is to overcome the deficiencies in the prior art and provide a combined formwork using square rods.

For solving technical problems, the solution of the utility model is:

Provide a combined formwork using square rods, including a horizontal restraint device; also includes a plurality of longitudinal rods arranged side by side, the cross-section of the rods is square; each rod is provided with a transverse through hole, and is formed by The cable passes through the through hole to achieve tension; the transverse restraint device is arranged around the outer side of each rod.

As an improvement, there are at least two through holes on each bar, and they are arranged separately up and down. The positions of the through holes on each bar are corresponding and consistent, and the number of cables is the same as the number of through holes on each bar. correspond.

As an improvement, the end of the cable is fixed by means of a screw, a pin or a hasp.

As an improvement, the lateral binding device is a belt with a self-locking device, a nylon belt, a steel wire rope, a nylon rope or a steel belt.

As an improvement, the rod is a hollow steel pipe, iron pipe or aluminum alloy pipe; or a solid steel rod, iron rod or aluminum alloy rod.

In the utility model, a cable for series connection and shape control is included. The cable is relatively soft, can be bent and deformed, and can bear a certain tension. The number of cables is at least two, or more; the square rod as the main body of the formwork has a square cross-section; there are small holes passing through the cross-section Used for threading cables, the cross-sectional size of the rods can be adjusted according to the size of the overall formwork; as a lateral restraint device for the formwork to withstand lateral pressure, it can withstand the lateral pressure of the poured concrete.

The cable in the utility model can withstand a certain tensile force, can be bent and deformed, can be a steel wire rope or a nylon rope, and can also be a cable or a ribbon made of other suitable materials. For example, belts with self-locking devices, nylon straps or steel straps.

The bar in the utility model has certain vertical and horizontal stiffness, and can bear certain vertical load and horizontal load. It can be a hollow tube or a solid one. From the perspective of saving materials, a hollow structure is usually used, and the latter has better strength. Steel pipes, iron pipes or aluminum alloy pipes can be used, or solid steel rods, iron rods or aluminum alloy rods; wooden strips, or square rods made of any other suitable materials can also be used.

Lateral restraints can be flexible strips or rings made of steel or wood.

The beneficial effects of the utility model are:

1. The formwork can be reused. For rectangular concrete columns of different sizes to be reinforced, it is only necessary to increase or decrease the rods, and there is no need to reprocess the formwork; it can effectively save reinforcement costs, and the more concrete columns are reinforced, the more obvious the economic effect will be.

2. It is convenient to obtain materials. The rods of the formwork can be made of wooden rods, aluminum alloy rods or other suitable materials;

3. It is easy to carry, and the cables, rods, and horizontal binding devices used as templates can be carried separately and assembled on site.

Description of drawings

Figure 1 Assembled template;

Figure 2 The shape of the template after it is supported on the outside of the concrete column.

The marks in the figure are: 1. Cable; 2. Rod; 3. Horizontal restraint device; 4. Original concrete column.

Detailed ways

Below with reference to accompanying drawing, the utility model patent is described in detail.

The combined formwork using square rods includes a cable 1 for connection and shaping, the cable 1 is fixed at the end with a threaded buckle, and the cable 1 is composed of a steel wire rope. The formwork includes a lot of longitudinal rods 2 arranged side by side, and the cross section of the rods 2 is square; each rod 2 is provided with a transverse through hole, and the cable 1 passes through the through hole to realize tension; the transverse restraint device 3 Arranged around the outside of each rod 1 . The lateral binding device 3 adopts a belt or a sling with a self-locking device.

The formwork in the utility model can be assembled on site, and after being assembled, it vertically surrounds the object, and then pours concrete into it. Before the concrete is poured, the formwork is not formed. After the concrete is poured, due to the lateral pressure of the concrete, the formwork can assume the required circular shape.

The utility model can be well used for FRP reinforced rectangular (square as a special case of rectangle) concrete column arc formwork, the size of the rods can be adjusted according to the size of the rectangular concrete column, and the number of rods can be adjusted according to the size of the rectangular concrete column The size can be increased or decreased, the thickness of the cable can be adjusted according to the amount of poured concrete, and the ring force device can be adjusted according to the force. The utility model well realizes the purposes of reusability, simple manufacture and convenient operation, and is a very practical formwork in the arcing process of rectangular concrete columns.

Finally, it should also be noted that the above list is only a specific embodiment of the utility model patent. Apparently, the utility model patent is not limited to the above embodiments, and many variations are possible. All deformations that a person skilled in the art can directly derive or associate from the content disclosed in the utility model patent should be considered as the protection scope of the utility model patent.

Claims (5)

1. utilize a Combined formwork for square rod member, comprise horizontal restraint device; It is characterized in that, also comprise the rod member of the longitudinal direction that many are arranged in juxtaposition, the cross section of rod member is square; Each rod member is provided with horizontal through hole, and realizes tension by rope through through hole; Described horizontal restraint device is arranged around the outside of each rod member.

2. template according to claim 1, is characterized in that, the through hole on each rod member has two at least, and arranged apart up and down, and the position of through hole on each rod member is mutually corresponding and consistent, and the quantity of rope is corresponding with the quantity of through hole on each rod member.

3. template according to claim 1, is characterized in that, described rope realizes fixing in the mode of screw thread, pin or hasp at its end.

4. according to the template described in claims 1 to 3 any one, it is characterized in that, described horizontal restraint device is with the belt of self-locking device, nylon tape, wire rope, nylon rope or steel band.

5. according to the template described in claims 1 to 3 any one, it is characterized in that, described rod member is hollow steel pipe, iron pipe or aluminium-alloy pipe; Or solid steel pole, iron or aluminium alloy rod.