CZ300893B6 - Reinforced column of elevated bearing capacity and process for producing thereof - Google Patents

Abstract

In the present invention, there is disclosed a reinforced column (1) consisting of a column section (2) with a hole bored therethrough into which hole an anchor element (6) is mounted. The ends of at least two prestressing guys (8) are anchored to the anchor elements (6) on each side of the column section (2). The guy (8) goes through the respective holes in the anchor element (6) and the other end of the prestressed guy (8) is firmly anchored in the anchor (10) in the foundation (5). The prestressing guy (8) is anchored on both sides of the column section (2) with one its end in the foundation (5) and with its other one in the anchor element (6), which is to be created in the upper part of the column section (2). Subsequently the guy (8) is prestressed either parallel with the axis of the column section (2) or under a certain angle.

Description

Reinforced mast for increased load capacity and method of its production

Technical field

The present invention relates to the reinforcement of an existing reinforced concrete column to an increased load capacity, which makes it possible to handle much heavier products in older production halls than the original hall was designed for and its production method.

BACKGROUND OF THE INVENTION

There are many halls from the sixties to nineties that were built as reinforced concrete structures. This construction included crane tracks made of reinforced concrete beams, short reinforced concrete columns and hall columns. The original crane tracks were often designed for 5 tonne bridge cranes. At present, however, there is a significant change in the product range. Especially in engineering production, the production of ever larger and more complete units is required, which as a finished product is transported to the customer. At the manufacturer, this increases the handling requirements and, as a rule, requires the installation of a larger and more capable overhead crane in the existing hall. Today's engineering operations therefore require higher load-bearing capacities for cranes, and often require up to 25 tons.

The problem can be solved by installing a new supporting system for a new crane runway into the existing hall construction. New construction, which is usually realized as steel, will require a considerable economic cost and also intervention in the actual layout of the hall space. There will be a new system of columns and foundation feet that must be installed outside the existing modular system. This reduces the actual utility value of the hall space.

In the structural assessment of the structural hall system, especially in the case of less loaded columns, where the roof structure is relieved, for example, by skylights or there is a small transverse spacing between the columns, these do not comply with the 1, ultimate limit state (I.MS).

A commonly used option is to reinforce the reinforced concrete column by bandaging it with steel plates in the form of a new external supporting steel system anchored to existing columns. Here, there is a problem in the different behavior of steel and concrete material and high labor intensity. This variant is also complicated by roof downpipes and distribution systems for production and heating, usually conducted around columns.

It is an object of the present invention to provide a solution providing increased load-bearing capacity of the columns, which would enable the traveling of overhead cranes with a high load capacity and during its production the operation in the hall will not be limited.

SUMMARY OF THE INVENTION

The above-mentioned drawbacks are remedied to a large extent by the reinforced column according to the invention, which consists in drilling a hole through which the anchoring element is inserted, and the anchoring elements anchoring the ends of at least two prestressing ropes on each side of the column member. wherein the rope is passed through corresponding holes in the anchoring element, wherein at the other end the biasing rope is firmly anchored in the anchor.

The essence of the invention is apparent from the embedded graphite No. 1 column load capacity as a function of the axial force (kN) and the bending moment (kN / m).

-1 CZ 300893 B6

Applying compressive force to the existing low-loaded but bent column will significantly increase its load-bearing capacity. The foundation structures are not overloaded.

In an advantageous embodiment, the anchoring elements are designed as anchoring tubes and the biasing ropes are anchored in anchoring sleeves which are designed to abut on the outer surface of the tube from above and pass through the ropes.

In another preferred embodiment, the biasing rope is arranged at an angle.

In a further preferred embodiment, the opening with the anchoring element is arranged in the upper part of the columnar element in the area from which the brackets 3 extend from it.

In a further preferred embodiment, the column is provided with four prestressing ropes, two ropes being arranged on each side of the column element, the ends of which are arranged in the anchor tube and from there the ropes are arranged obliquely on the axis side to the anchors in the base.

Another object of the present invention is to provide a method of manufacturing a reinforced column comprising anchoring a biasing rope on either side of the column member with one end in the base or directly into the column below the cusp level of the footer and the other end in the anchoring element formed at the top The cable is then pre-tensioned, either parallel to the axis of the column or at an angle.

In a preferred embodiment, two are anchored on each side of the pole post, both anchored in the anchoring element and lead to the anchors in the base at an angle.

-2CL JUUO7J DO

BRIEF DESCRIPTION OF THE DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side elevational view of a reinforced column according to the invention in a first embodiment with two anchor ropes; FIG. 2 is a side elevational view of the same reinforced column; The pole according to the invention according to the second embodiment with four anchor ropes and Fig. 4 is a view of the same reinforced pole from the front.

DETAILED DESCRIPTION OF THE INVENTION

It can be seen in Figs. 1 and 2 that the reinforced column 1 consists of a reinforced concrete column member 2, which is provided with a bracket 3 on which the crane track beams 4 are then supported. The column member 2 is a USA15 zen based 5. Through the column member 2 a hole is drilled into which the anchoring element 6 is received. In the preferred embodiment, it is formed as an anchoring tube 7. On the anchoring elements 6 the ends of the biasing ropes 8 are anchored. The ends of the ropes 8 are rigidly arranged in the anchor sleeves 9 that abut the anchor tube 7. In this case, the abutment surface of the anchor sleeves 9 is shaped to fit circumferentially. pipes 7.

At the other end, the biasing rope 8 is firmly anchored in the anchor 10 in the base 5. In the illustrated embodiment, the biasing rope 8 is arranged at an angle, but this is not a requirement. It can also be arranged vertically. The purpose of the arrangement of the ropes 8 on the column member 2 is to strengthen the column I in the direction of its axis.

An anchor tube opening 7 is provided in the upper part of the column member 2, preferably at the point where the brackets 3 extend from the column member.

FIGS. 3 and 4 show an embodiment in which the reinforced column 7 is provided with four prestressing ropes 8. Then the ends of both ropes 8 are arranged in the anchor tube 7 on each side of the column member 2 and hence the ropes 8 are inclined to the anchors W 5.

As is apparent from Figures 1 and 3, two ropes are used in single-pole columns, while four ropes 8 are used in double-pole columns. Such columns are subjected to more stresses and it is therefore necessary to strengthen the column I more.

Claims (6)

PATENT CLAIMS A reinforced column comprising a columnar element, characterized in that through a columnar element ( 2) a hole is drilled into which the anchoring element (6) is received, the anchoring elements (6) anchoring the ends of at least two biasing ropes (8) on each side of the column member, the rope (8) being passed through corresponding holes in an anchoring element (6), wherein at the other end the biasing rope (8) is firmly anchored in the anchor (10) of the base (5). A reinforced column according to claim 1, characterized in that the anchoring elements (6) are designed as anchoring tubes (7) and the pre-tensioning ropes (8) are anchored in the anchor sleeves (9) which are designed to abut against the outer surface of the tube (7) from above and the ropes (5) pass therethrough. -3GB 300893 B6 Reinforced mast according to claim 1, characterized in that the pre-tensioning rope (8) is arranged at an angle. Reinforced column according to claim 1, characterized in that the openings with the anchoring element (6) are arranged in the upper part of the column member (2) in the area from which the brackets (3) project from it. Reinforced column according to claim 1, characterized in that it is provided with four prestressing ropes (8), two ropes (8) being arranged on each side of the column element, the ends of which are arranged in the anchor tube (7) and from there are the ropes (8) arranged obliquely on the side of the axis to the anchors (10) in the base (5). Method for producing a reinforced column according to claims 1 to 4, characterized in that the biasing rope (8) is anchored on both sides of the column member (2) with one end in the base. 15 and the other end in the anchoring element which is formed at the top of the column member, whereupon the rope (8) is biased, either parallel to the axis of the column member or at an angle. Method according to claim 5, characterized in that two are anchored on each side of the rope post (2), both being anchored in the anchoring element (6) and guided to the anchors (10). 20 at the base (5) at an angle.