RU190108U1 - Composite reinforcement - Google Patents

Abstract

The utility model relates to the construction, in particular to composite reinforcement. The technical result of the utility model is the optimization of the moments of resistance of composite reinforcement in the spatial positioning of it to increase the carrying capacity. Composite reinforcement, including an ellipsoid core of roving yarn impregnated with a binder, and winding twisted around a longitudinal axes, with a hardness higher than the core, a winding bundle having the shape of an ellipse in cross section, additionally impregnated from contact with The core and the core are formed by a groove by pressing in a harness, the axial ellipse axes of the composite reinforcement core are executed in proportion with the calculated axial loads, the long axis of the ellipsoid core is combined with the maximum moment of resistance on the reinforcement in terms of its spatial positioning, the lesser axle of the coil its spatial positioning around the core is arranged parallel to its longitudinal axis. The technical result is called moment optimization in the resistance of composite reinforcement in the spatial positioning of it to increase the bearing capacity. 1 silt, 1 tab.

Description

The invention relates to the construction, namely to composite reinforcement.

A device is known a rod of composite reinforcement according to a patent (RU No. 2613380 Е04С 5/07 (2006.01). Published: 16.03.2017 Bull. No. 8), containing a supporting rod, made using a core die, with a temperature regime divided into three zones.

The considered composite reinforcement has insufficient bearing capacity.

A device is known composite composite reinforcement according to the patent (WO / 2001/051730 Е04С 5/07 (2006.01). Published: 07.19.2001), containing reinforcing bars made of a composite of depolymerizable and polymerizing thermoplastic resin and longitudinally oriented reinforcing fibers, which are easily formed into various forms in length, with the possibility of mechanical coupling with concrete.

The considered composite reinforcement has insufficient bearing capacity.

A device known as composite reinforcement according to the patent (RU No. 2287647 Е04С 5/07 (2006.01). Published: 20.11.2006 Byul. No. 32), containing the supporting rod, the surface relief of the rod is created by a winding cord, the ratio of the areas of sections of the supporting rod and the winding cord is limits from 3 to 25, the winding bundle in the section has the shape of an ellipse, the major axis of which is located along the supporting rod, and the angle of winding is 30-70 °.

The considered composite reinforcement has insufficient bearing capacity.

The closest device is the composite reinforcement according to the patent (RU # 2620803 Е04С 5/07 (2006.01). Published: 29.05.2017 Bulletin # 16), containing a core of fittings made of roving threads impregnated with a binder and wound twisted around a longitudinal axis, stretched, with hardness above the core, a bundle, and the winding is impregnated from contact with the core, and a groove is formed in it by the pressing of the bundle.

The considered composite reinforcement has insufficient bearing capacity.

The technical result of the utility model is the optimization of the moments of resistance of composite reinforcement in the spatial positioning of it to increase the bearing capacity.

The technical result is achieved in a composite reinforcement device, including an ellipsoid core of roving threads impregnated with a binder and a coil twisted around a longitudinal axis, with a hardness higher than the core, a winding cord having an ellipse shape in cross section, additionally impregnated from contact with the core and in the core, a groove is pressed in harness, with the axes of the ellipse of the core of the composite reinforcement being executed in proportion with the design loads along the axes, the long axis of the ellipsoid heart nick combine with the maximum moment of resistance at the valve in terms of its spatial positioning, smaller ellipse axis winding harness in terms of its spatial positioning around a core disposed in parallel to its longitudinal axis.

Distinctive features are:

the axes of the ellipse of the core of the composite reinforcement are executed in proportion with the calculated loads along the axes, which allows optimizing the moments of resistance of the composite reinforcement along the axes of the ellipsoid core during its spatial positioning to increase the bearing capacity;

the long axis of the ellipsoid core is combined with the maximum moment of resistance to the reinforcement in terms of its spatial positioning, this makes it possible to take into account the geometry of the reinforcement in power loads to the maximum;

the smaller axis of the winding cord ellipse in terms of its spatial positioning around the core is arranged parallel to its longitudinal axis; the use of a winding cord in the form of an ellipse, the smaller axis of which is located along the core increases the total moment of resistance along the reinforcement, due to the shape and periodic repetition of the enlarged geometrical dimensions of the winding cord and improves the bearing quality of reinforcement.

In tab. the interrelation of the ratio of the values of the principal central axes of the ellipse and the moments of resistance according to analytical data [5] is presented.

The moments of resistance along the axes of maximum load, an ellipse with a different increasing ratio of the major axis to a smaller 1.5625 and with an area equal to the cross-sectional area of a circle of 16mm, increased 1.25 times, i.e. by 25% (see tab.). The moments of resistance along the axis of minimum load, under similar conditions, decreased to 0.8 times or -20%. The total moments of resistance along both axes increased by 1.025 times, i.e. by 2.5%.

FIG. the composite reinforcement is depicted with the relief of the core surface created by an ellipsoid-shaped winding bundle with the location of the lesser axis of the ellipse parallel to the core: 1 - core; 2 - Winding harness.

The main raw material for the production of fiberglass reinforcement is glass roving. It is made by melting aluminoborosilicate glass, followed by pulling into a thread with a thickness of 10 to 20 microns. Threads impregnated with a special lubricant are collected in a bundle. This bundle is called glass roving.

In addition to roving for the manufacture of fiberglass reinforcement is required:

resins;

winding bundle (roving, which goes to the winding of the reinforcement bar);

ethanol;

acetone;

dicyandiamide.

The production technology of composite reinforcement is as follows:

The roving threads from a special device (creel) come to the tension mechanism, in which they are arranged in the appropriate order.

Arranged in the right order, the threads go through a stage of drying and preheating with hot air.

Heated roving is immersed in an impregnation bath; Winding harness 2 is impregnated heavily for a clearer spatial positioning of the axes relative to the core 1.

From the bath, the material is pulled through the spinnerets to obtain a given ellipsoid-shaped cross-sectional area in the future reinforcement section. At this stage, a core and a winding cord are obtained.

The thickness of the winding depends on the type of reinforcement: the thicker is made with a winding cord for a classical device, thin in the manufacture of rods with sandy dressing.

The armature prepared on the winding goes through a tunnel kiln. At the entrance to the furnace a node is installed that distributes sand over the rod. If no dressing is provided, this device remains empty. Tunnel kiln is designed to accelerate the process of polymerization impregnating resins.

The hot harness goes to a cooling bath where it is completely cooled under running water.

A continuous, cooled bar is passed through a pulling mechanism, at the exit of which the bar is cut according to a given size.

The profiling die can be made, for example, in the form of a detachable steel structure consisting of two rectangles with a milled and half-ellipse groove along the length of each part, which, when joined, form an ellipse surface corresponding to the area of the target device equal to the area of a given circle.

Information sources

1. Patent RU No. 2613380 Е04С 5/07 (2006.01). Published: 03/16/2017 Bull. №8.

2. Patent WO / 2001/051730 Е04С 5/07 (2006.01). Published: 07/19/2001.

3. Patent RU No. 2287647 Е04С 5/07 (2006.01). Published: 20.11.2006 Byul. №32.

4. Patent RU No. 2620803 Е04С 5/07 (2006.01). Published: 05/29/2017 Bull. №16.

5. Reference material resistance / Pisarenko, GS, Yakovlev, AP, Matveev, VV; rep. ed. Pisarenko G.S. - 2nd ed., Pererab. and add. - Kiev: Sciences. Dumka, 1988. - 736 s. (58, 74 p.).

Indicator A circle,
Diameter 16 mm Ellipse Axle length, mm 16 × 16 20 × 12.8 32 × 8 The ratio of axles i = 1.0 i = 1,5625 i = 4 Cross-sectional area, cm ² 2.0096 2.0096 2.0096 The moment of resistance on the maximum axis, cm ³ 0.40192 0.5024 0,80384 The moment of resistance along the minimum axis, cm ³ 0.40192 0.3215 0,20096 Total moment of resistance, cm ³ 0,80384 0.8239 1,0048

Tab.

Claims (1)

Composite fittings, including an ellipsoid core of roving threads impregnated with a binder, and a coil twisted around a longitudinal axis, with a hardness higher than a core, a winding cord having an ellipse shape cross section, additionally impregnated from contact with the core, and a groove formed in cross section , characterized in that the axes of the ellipse axis of the core of composite reinforcement are performed in proportion with the design loads along the axes, the long axis of the ellipsoid core is combined with the maximum omentom resistance to the valve in terms of its spatial positioning, smaller ellipse axis winding harness in terms of its spatial positioning around a core disposed in parallel to its longitudinal axis.

Images