SU763556A1

SU763556A1 - Method of prestressing flexible reinforcement members in making reinfoced concrete products

Info

Publication number: SU763556A1
Application number: SU782668415A
Authority: SU
Inventors: Вячеслав Геворкович Асатрян
Original assignee: Армянский Научно-Исследовательский Институт Строительства И Архитектуры
Priority date: 1978-07-19
Filing date: 1978-07-19
Publication date: 1980-09-15

Description

II

Изобретение относитс к способам предварительного напр жени гибкой арматуры при изготовлении предварительно напр женных строительных изделий.The invention relates to methods for prestressing flexible reinforcement in the manufacture of prestressed building products.

Известен способ предварительного напр жени гибкой арматуры, включающий размотку арматуры из бухты, пропускаемое ее через нат жное приспособление и последующую укладку напр женной арматуры на поверхность цилиндрического сооружени 1.A known method of prestressing flexible reinforcement includes unwinding the reinforcement from the coil, passing it through the tensioner, and subsequently laying the reinforcement to the surface of the cylindrical structure 1.

Этот способ пригоден дл предварительного напр жени только дл непрерывно навиваемой арматуры на цилиндрические сооружени .This method is suitable for prestressing only for continuously wound reinforcement on cylindrical structures.

Наиболее близким к. изобретению вл етс способ предварительного напр жени гибкой арматуры при изготовлении железобетонных изделий, включающий размотку арматуры из бухты, отрезку арматуры, укладку ее в форму, закрепление ее в установленных по торцам формы анкерах и нат жение с помощью силового устройства .бетонирование 2.The closest to the invention is a method of prestressing flexible reinforcement in the manufacture of reinforced concrete products, including unwinding the reinforcement from the bay, cutting the reinforcement, placing it into a form, fixing it to anchors installed at the ends of the form and tensioning it with a power device. .

Недостатком этого способа вл ютс больщие отходы арматуры, которые состо т из отрезаемого впоследствии участка арматуры , необходимого дл захвата ее силовым устройством, и участка, получаемого вследствие удалени арматуры при нат жении.The disadvantage of this method is the large waste of reinforcement, which consists of the section of reinforcement subsequently cut off, necessary for its capture by a power device, and the section obtained by removing the reinforcement during tension.

Цель изобретени - исключение отходов арматуры.The purpose of the invention is the elimination of waste fittings.

Дл этого в способе предварительного напр жени гибкой арматуры, включающем размотку арматуры из бухты, отрезку арматуры , укладку ее в форму, закрепление ее в установленных по торцам формы анкерах и нат жение с помощью силового устройства, 10 бетонирование, ее нат жение производ т со стороны торца формы, в который входит ветвь арматуры, путем захвата силовым устройством участка арматуры, сход щего с бухты, а отрезку арматуры осуществл ют после бетонировани .To do this, in the prestressing method of flexible reinforcement, including unwinding the reinforcement from the coil, cutting the reinforcement, placing it into the form, fixing it in the anchors installed at the ends of the form and tensioning with the help of a power device, 10 the end of the form, into which the reinforcement branch enters, by means of a power device captures a section of reinforcement descending from the coil, and the section of reinforcement is carried out after concreting.

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На чертеже изображена схема нат жени арматуры по данному способу.The drawing shows a diagram of the tension of the reinforcement in this method.

Способ предварительного напр жени гибкой арматуры состоит в следующем.The method of prestressing flexible reinforcement is as follows.

Claims

Flexible reinforcement 1 is unwound from coil 2, passed through a power device with a gripper 3, the wound reinforcement branch is laid in form 4 and secured in anchors 5 and 6 installed along the ends of form 4. Then tensioning reinforcement 1 is produced using a power device with gripper 3, the mold 4 is filled with concrete mix and after it is cured, the reinforcement is cut off at the end of mold 4 from the installation side of the anchor 5. Compared to the known method in the described method, the section obtained due to elongation of the reinforcement under tension is not cut off, therefore enters the length of the reinforcement branch used to make the next concrete product. To capture the power device does not require a special section at the end of the tensioned reinforcement, as this is done using its section that converges from the bay. Claims The method of prestressing flexible reinforcement in the manufacture of reinforced concrete products, including unwinding reinforcement from a coil, cutting an armature, placing it in a form, fixing it in anchors installed at the ends of the form and tensioning it with a power device, concreting, characterized in in order to eliminate armature waste, its tension is produced from the end of the form, into which the armature branch enters, by capturing a section of the armature descending from the bay with a power device, and stvl dissolved after concreting. Sources of information taken into account in the examination 1. USSR author's certificate number 253340, cl. E 04 G 21/12, 1968.

2. USSR author's certificate number 77827, cl. E 04 G 21/12, 1948.