KR102427958B1 - Cable-reinforced membrane structure resistant to wind loads - Google Patents

Abstract

The present invention relates to a cable reinforcing type membrane structure resistant to a wind load and, more specifically, to a membrane structure, wherein, a roof framework having a dome shape is installed at the upper portion of a pillar framework installed at the both sides, and bracings are installed between the outside of the pillar frameworks and the ground so as to control a horizontal displacement, while a membrane material is installed at the upper surface of the pillar frameworks and the roof framework. Moreover, a plurality of cables are further installed on the roof framework. The both end portions of the cables are doubly strained by means of a double mounting device on the outside of a mounting device support plate which is individually provided at the both sides of the roof framework. Therefore, the membrane structure may provide safe resistance even against an excessive wind load. Furthermore, as the double mounting device is installed at the end portion of the cables, when a slip is generated by means of an external impact or strong wind during the mounting at a first wedge of a first mounting device to which most of the tension of the cables is being applied, the cables may be mounted again at a second wedge of a second mounting device, thereby guaranteeing safety of the cables.

Description

Cable-reinforced membrane structure resistant to wind loads

The present invention relates to a cable-reinforced membrane structure resistant to wind load, and more particularly, a plurality of cables are installed on the roof frame of the membrane structure, and both ends of the cables use a double anchorage to introduce tension. The membrane structure itself can safely resist excessive wind loads, and at the same time, if slip occurs due to excessive external shocks or wind loads, etc. 2 It relates to a cable-reinforced membrane structure strong against wind load, which was invented so that the safety of the cable can be completely secured by fixing the cable again at the second wedge of the anchorage.

In general, a membrane structure is a structure using coated fabrics as a main material, and is being used in a continuous increasing trend due to the diversity of architectural expressiveness and beautiful formative beauty.

In addition, due to the light-transmitting properties of the membrane material used, the interior space is bright, light weight, and workability, etc. It is widely used as a major structural method for large-scale structures such as large-scale stadiums and indoor stadiums. Recently, examples of its application can be found not only in outdoor performance halls and exhibition-related facilities, but also in the improvement of traditional markets, pergola, and houses.

In Korea, due to the limitations of membrane structure maintenance technology and disaster prevention technology, large-scale membrane structures damaged by heavy snow and typhoons are being restored and reconstructed.

For example, the Jeju World Cup Stadium, Incheon Munhak Stadium, and Mokpo International Football Center were destroyed by strong winds, and the Seoul Olympic Gymnastics Stadium was damaged by snow.

Membrane structures (ductile structures) have a large displacement behavior, so when a resonant load by wind load acts, large displacement occurs and the structure is vulnerable to collapse even by a small wind.

When the creep phenomenon occurs in the membrane structure, the initial tension is lost, thereby increasing the displacement caused by the external load. Ponding occurs when an unexpected snow load acts on the membrane structure at the time of designing the structure, and additional snow acts on the deformed structure to collapse due to the excessive snow load applied to the structure. A device capable of controlling the displacement is required.

For example, when an unexpected strong external force (typhoon, tornado, etc.) acts on the membrane structure when designing the structure, fluttering of the membrane may occur and it may collapse due to the resonance effect. The development of a membrane structure capable of withstanding wind loads as well as a line control device is required.

On the other hand, the cable, which is a tension member, is suitable to support the floor part with a large bending stress of the structure in constructing a building, bridge, or ground landscaping, or to support the load of the structure by a compressive stress member such as a column, such as a suspension bridge or cable-stayed bridge. If not, it is widely used in the case of supporting the load of the structure by the tensile force of the cable by hanging the structure with a cable.

In addition to adjusting the magnitude of the tensile force acting on the cable at the time of initial installation, the tensile cable for this purpose is repeatedly subjected to vibrations caused by wind, driving vibration of vehicles, or temperature, etc. as time elapses after the tensile cable is installed. A cable anchorage is a device provided at both ends of a cable to maintain proper tension by pulling back the cable that has been loosened in the case of loosening by accumulating a fine strain under the influence.

Since a tension cable is generally a wire rod having a circular cross section and a constant diameter in the longitudinal direction, when the cable is pulled in the axial direction and tensioned, the tensioning device (tension adjusting device) does not directly grip the end of the cable to tension it. In order to facilitate the gripping of the cable end with the cable fixing device at the end of the cable, a predetermined enlarged diameter body that increases the diameter of the cable end is firmly fixed and then tensioned through the cable fixing device.

A typical cable anchorage according to the prior art is divided into a plurality of pieces (usually three pieces) and formed, and then when one wedge having a conical shape is combined with the outer surface of the cable to which a tensile force is subsequently applied, the inner side has a conical shape and one end It has a form inserted into the barrel supported or supported by the anchorage support plate provided in the additional structure.

In such a state, if tension is applied to the cable by applying a tension to the cable, a force is applied to the wedge having a state of being bitten on the outer surface of the cable in the direction of the tension of the cable, so that the wedge is tightly fitted into the barrel and the wedge itself holds the cable. will be fixed

At this time, the wedge has a shape formed of a plurality of pieces as described above, and a plurality of blotting protrusions having a triangular or sawtooth shape are formed at predetermined intervals on the inner surface that is in direct contact with the outer surface of the cable. When a desired tensile force is applied and released, the wedge made of a plurality of pieces is tightly inserted into the barrel, the inner diameter is reduced, and a plurality of blotting protrusions are drawn out on the outer surface of the cable.

Therefore, the moment the tensile force is applied and released as much as desired, the cable in the area in contact with the wedge is fixed (ie, fixed) in the barrel together with the wedge, so that the cable itself maintains the desired tension.

On the other hand, a membrane structure strong against heavy snow load and wind load uses a method of reinforcing a cable in a steel structure and reinforcing the frame by introducing an initial tension to the cable.

In structural cables, relaxation, a phenomenon in which tension is lost after the introduction of tension, tends to occur, so the fixing method of the actual cable end is very important.

However, since most of the conventional cable anchorages use a single wedge as described above, when severe vibration or shock load occurs, there is a problem in that the cable slips.

Domestic Patent Publication No. 10-0852748 (Aug. 11, 2008) Domestic Registered Patent Publication No. 10-1386588 (April 11, 2014) Domestic Registered Patent Publication No. 10-1507679 (March 25, 2015)

The present invention has been devised to solve the various problems of the prior art, and a plurality of cables are further installed on the roof frame of the membrane structure, but the anchorage that introduces tension to the cable itself by fixing both ends of the cables is separate. By installing the molded double anchorage, the membrane structure itself can safely resist excessive wind loads, and the impact applied from the outside during anchoring at the first wedge of the first anchorage to which most of the cable tension is applied among the double anchorages. In case slip occurs due to wind or strong wind, the purpose is to provide a cable-reinforced membrane structure strong against wind loads that can secure the safety of the cable by re-fixing the cable at the second wedge of the second anchorage. .

Another object of the present invention is to further install a vertical cable departure prevention plate that prevents the cable from being separated at both ends of the upper surface of the lower horizontal plate of the “H” beam on which the cable is disposed when the roof frame is formed into an “H” beam, and , In addition, when the roof frame is molded into a pipe, a bending preventing member having a front cross-section having a “T” shape is further installed on the top surface of the pipe on which the cable is disposed, the lower surface of the upper horizontal plate of the bending preventing member and the upper surface of the pipe It is possible to completely prevent the separation of cables installed on the roof frame of the membrane structure by further installing a cable separation prevention plate equipped with a cable passage hole at a predetermined interval, thereby further increasing the safety of the membrane structure against wind loads. An object of the present invention is to provide a cable-reinforced membrane structure that is strong against wind loads.

Another object of the present invention is to further install a second anchorage barrel support plate having a cable through hole in the middle of the pipe-type nut of the double anchorage, thereby primarily fixing the cable on the outside of the barrel of the first anchorage. By coupling one end of the type nut, then schematically coupling the second anchorage inside the other end of the pipe-type nut, and then rotating the pipe-type nut in a predetermined direction as many times as necessary, the second anchorage barrel Since the support plate pushes the barrel of the second anchorage outward and the wedge installed in the barrel can double-fix the cable, it is possible to accurately provide the desired tensile force to the cable itself, and also the second anchorage having a double anchoring function. When you want to dismantle the pipe type nut, it can be easily dismantled by simply rotating the pipe type nut in the opposite direction as described above. have.

Another object of the present invention is to further form a tool locking groove on the outer surface of the pipe-type nut of the double anchorage to tighten or loosen the pipe-type nut using various types of tools such as a pipe wrench as well as a monkey spanner or pliers. It provides a cable-reinforced membrane structure that is strong against wind loads that can significantly reduce labor costs because it has good workability due to the installation or disassembly of the double anchorage that fixes the installed cables safely under wind loads, and can also shorten the time. have.

Other detailed objects of the present invention will be clearly grasped and understood by experts or researchers in the technical field through the specific contents described below.

In the wind load-resistant membrane structure of the present invention for achieving the above object, a roof frame having a dome shape is installed on the upper part of the column frame installed on both sides, and a horizontal displacement between the outside of the column frame and the ground In the membrane structure of a structure in which bracings are installed and the membrane material is installed on the upper surfaces of the pillar frame and the roof frame, a plurality of cables are further installed on the roof frame, both ends of the cables are both ends of the roof frame It is characterized in that it is double tensioned through the double anchorage from the outside of the anchorage support plate provided in each.

At this time, the roof frame includes those formed using an "H" beam or a pipe, and when the roof frame is formed into an "H" beam, the cable is continuous in the horizontal direction on the upper surface of the lower horizontal plate of the "H" beam and, when the roof frame is molded into a pipe, the cable is continuously arranged along the inner bottom or upper surface of the pipe.

In addition, when molding using a pipe as the roof frame, in order to increase the bending strength of the pipe, a bending preventing member having a "T" shape in the longitudinal direction from the upper surface of the pipe is further installed. do it with

In addition, when forming an "H" beam with the roof frame and continuously arranging cables in the horizontal direction on the upper surface of the lower horizontal plate of the "H" beam, both ends of the upper surface of the lower horizontal plate of the "H" beam It is characterized in that a vertical cable separation prevention plate to prevent separation is further installed.

In addition, when a bending preventing member is provided in the longitudinal direction on the upper surface of the pipe molded into the roof frame, and cables are continuously disposed on the upper surface of the pipe, between the lower surface of the upper horizontal plate of the bending preventing member and the upper surface of the pipe In the transverse direction, it is characterized in that the cable separation prevention plate formed in the center of the bottom of the cable passage hole is further installed at a predetermined interval.

In addition, the double anchorage has a form consisting of a first wedge and a first barrel having a thread on the outer surface, and one end of the first barrel is coupled to the outside of the cable so as to be supported on the anchorage support plate. a first anchorage for fixing the cable through the first wedge installed in the first barrel when the cable is tensioned by the first anchor to introduce a primary tension force; It has a form composed of a second wedge and a second barrel having a screw thread on the outer surface, and is coupled to the outside of the cable at a location separated from the first anchorage by a predetermined distance between the first and second barrels of the first anchorage. When the pipe-type nut screwed to the outside is rotated in a predetermined direction by the tool and pushed toward the end of the cable, a second anchorage for fixing the cable through a second wedge installed in the second barrel to introduce a secondary tension force; ; It has a form screwed to the outer surface of the first and second barrels between the first and second anchorages having a predetermined distance from each other through a thread formed on the inner surface, and is rotated by a tool and corresponds to the distance moved toward the second anchorage to push the second barrel of the second anchorage outward, and to allow the cable to which the primary anchoring and tension force have been introduced by the first anchorage to be re-fixed through the second anchorage while maintaining the state in which the secondary tension force is introduced It is characterized in that it includes; a pipe-type nut.

In addition, a cable through hole is provided in the inner middle of the pipe-type nut, and when the pipe-type nut is rotated by a tool and moved toward the second anchorage, a pressure for pushing the second barrel of the second anchorage to the outside is applied. It is characterized in that the second anchorage barrel support plate is further installed or integrally formed so that the cable firstly anchored by the first anchorage is re-fixed by the second wedge press-fitted into the second barrel of the second anchorage.

In addition, all or part of the outer surface of the pipe-type nut is characterized in that it further forms a tool locking groove for coupling various tools to rotate the pipe-type nut in the tightening or loosening direction.

As described above, according to the cable-reinforced membrane structure strong in the wind load of the present invention, a plurality of cables are further installed on the roof frame of the first membrane structure, and both ends of the cables are fixed to introduce tension to the cable itself. The anchorage is installed with a separately molded double anchorage, so that the membrane structure itself can safely resist excessive wind loads. In case slip occurs due to applied impact or strong wind, the cable can be secured again by fixing the cable at the second wedge of the second anchoring hole.

In other words, in the present invention, a plurality of cables are further installed on the roof frame, and both ends of the cables are tensioned twice through the double anchorage having a function of fixing the cable twice, respectively, when designing the membrane structure. When an unexpected strong external force such as a typhoon or tornado acts on the membrane structure, the cables installed on the roof frame and double tensioned through the double anchorage elastically attenuate and alleviate the impact caused by the external force, causing the membrane to vibrate due to wind pressure. It is possible to block the resonance phenomenon caused by this in advance, so that the membrane structure itself can safely resist excessive wind loads. In case slip occurs due to impact or strong wind, etc., it is possible to re-fix the cable at the second wedge of the second anchorage hole, thereby securing the safety of the cable.

Second, in the present invention, in the case of forming the "H" beam with the roof frame, a vertical cable departure prevention plate for preventing the cable from being separated is further installed on both ends of the upper surface of the lower horizontal plate of the "H" beam on which the cable is placed, and When the roof frame is molded into a pipe, a bending preventing member having a front cross-section having a “T” shape is further installed on the upper surface of the pipe on which the cable is disposed, and the lower surface of the upper horizontal plate of the bending preventing member and the upper surface of the pipe are By further installing a cable separation prevention plate provided with a cable passage hole at an interval, it is possible to completely prevent the separation of cables installed on the roof frame of the membrane structure, thereby further increasing the safety of the membrane structure against wind load.

Third, in the present invention, by further installing a second anchorage barrel support plate provided with a cable passage hole in the inner middle part of the pipe-type nut of the double anchorage, the pipe-type nut is located on the outside of the barrel of the first anchorage where the cable is primarily fixed. By coupling one end, then schematically coupling the second anchorage to the inside of the other end of the pipe-type nut, and then rotating the pipe-type nut in a predetermined direction the required number of times, the second anchorage barrel support plate 2 It pushes the barrel of the anchorage outward and the wedge installed in the barrel can double-fix the cable, so it is possible to accurately provide the desired tensile force to the cable itself, and also to dismantle the second anchorage with the double anchoring function. When doing so, it can be easily disassembled simply by rotating the pipe-type nut in the opposite direction, thereby significantly reducing the cost and time required for the maintenance of the membrane structure.

Fourth, in the present invention, by further forming a tool locking groove on the outer surface of the pipe-type nut of the double anchorage, it is possible to tighten or loosen the pipe-type nut using various types of tools such as a pipe wrench as well as a monkey spanner or pliers. It is a very useful invention, such as good workability due to the installation or disassembly of the double anchorage that fixes the installed cables safely, and can also shorten the time, which in turn can significantly reduce the labor cost.

Other effects of the present invention will be clearly understood and understood by an expert or researcher in the art through the specific details described below, or during the process of carrying out the present invention.

1 and 2 are a front view and a partially enlarged view of a membrane structure to which the present invention is applied.
3 is an enlarged cross-sectional view of the main part for explaining an example in which the present invention is applied to a membrane structure in which a roof frame is formed with an "H" beam.
4 is an enlarged cross-sectional view of the main part for explaining an example of applying the present invention to a membrane structure in which a roof frame is formed with a pipe.
5 is an enlarged cross-sectional view of the main part of a state in which the first anchorage of the double anchorage applied in the present invention is coupled to the cable to introduce the primary tension force, and the pipe-type nut and the second anchorage are mutually coupled to the first anchorage.
6 is an enlarged view of a state in which the double anchorage applied to the present invention is doubled on the cable, and the cable is double-fixed through the first and second anchorages by rotating the pipe-type nut, and the tension force is introduced in the double Cross-section.

Since the present invention can have various changes and can have various forms, specific embodiments are illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to the specific disclosed form, it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

Terms such as first, second, etc. may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

The terminology used in the present application is used to describe specific embodiments of the terminal, and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification is present, but one or more other features or It should be understood that the existence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded in advance.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

Hereinafter, with reference to the accompanying drawings, the operation state according to each configuration including a preferred embodiment according to the present invention will be described in detail as follows.

1 and 2 show a front view and a partial enlarged view of a membrane structure to which the present invention is applied, and FIG. 3 is a main part for explaining an example in which the present invention is applied to a membrane structure in which a roof frame is formed with an "H" beam An enlarged cross-sectional view is shown, and FIG. 4 is an enlarged cross-sectional view showing the main part for explaining an example in which the present invention is applied to a membrane structure in which a roof frame is formed with a pipe.

In addition, Figure 5 is an enlarged cross-sectional view showing the main part of the state in which the first anchorage of the double anchorage applied in the present invention is coupled to the cable to introduce the primary tension force, and the pipe-type nut and the second anchorage are mutually coupled to the first anchorage. 6 is a state in which the double anchorage applied by the present invention is doubled on the cable, and the cable is double-fixed through the first and second anchorages by rotating the pipe-type nut, and the tension force is introduced in the double An enlarged cross-sectional view of the main part is shown.

According to this, the cable-reinforced membrane structure strong in wind load of the present invention,

A roof frame 20 having a dome shape is installed on the upper portion of the pillar frame 10 installed on both sides, and between the outside of the pillar frame 10 and the ground, braces 30 that can control horizontal displacement are installed In the membrane structure of the structure in which the makjae is installed on the upper surface of the pillar frame 10 and the roof frame 20,

A plurality of cables 40 are further installed on the roof frame 20, and both ends of the cables 40 are double anchored from the outside of the anchorage support plates 20a provided on both sides of the roof frame 20, respectively. ), each of which is characterized by double tension.

At this time, the roof frame 20 includes those formed using the "H" beam 21 or the pipe 22, and when the roof frame 20 is formed with the "H" beam 21, the cable (40) is continuously arranged in the horizontal direction on the upper surface of the lower horizontal plate 211 of the "H" beam 21, and when the roof frame 20 is formed into a pipe 22, the cable 40 is piped It is characterized in that it is continuously arranged along the inner bottom or upper surface of (22).

In addition, when molding using the pipe 22 as the roof frame 20, the front cross-section in the longitudinal direction from the upper surface of the pipe 22 in order to increase the bending strength of the pipe 22 is "T" shape It is characterized in that the bending prevention member 221 having a shape is further installed.

In addition, in the case of forming the "H" beam 21 with the roof frame 20 and continuously disposing the cable 40 in the horizontal direction on the upper surface of the lower horizontal plate 211 of the "H" beam 21 , It is characterized in that the vertical cable departure prevention plate 212 for preventing separation of the cable 40 is further installed at both ends of the upper surface of the lower horizontal plate 211 of the "H" beam 21 .

In addition, when the bending preventing member 221 is provided in the longitudinal direction on the upper surface of the pipe 22 molded from the roof frame 20, and the cable 40 is continuously disposed on the upper surface of the pipe 22, In the transverse direction between the lower surface of the upper horizontal plate of the bending preventing member 221 and the upper surface of the pipe 22, the cable passing hole 222a is formed in the center of the bottom center of the cable departure prevention plate 222 at a predetermined interval. It is characterized by being installed.

In addition, the double anchorage 50

The cable 40 has a shape consisting of a first wedge 511 and a first barrel 512 having a thread 512a on the outer surface, and one end of the first barrel 512 is supported on the anchorage support plate 20a. ) when the cable 40 is tensioned by a tensioning device in a state coupled to the outside of the first barrel 512 to fix the cable 40 through the first wedge 511 installed in the first barrel 512 to introduce the primary tension force a first anchorage (51);

The second wedge 521 and the second barrel 522 having a screw thread 522a on the outer surface have a shape, and are coupled to the outside of the cable 40 at a location separated from the first anchorage 51 by a certain distance. In this state, the pipe-type nut 53 screwed to the outside of the first barrel 512 and the second barrel 522 of the first anchorage 51 is rotated in a predetermined direction by a tool, and the end of the cable 40 is a second anchoring hole 52 for fixing the cable 40 through the second wedge 521 installed in the second barrel 522 when pushing to the side so that a secondary tension force is introduced;

The first and second anchors 51 and 52 having a predetermined distance from each other through a thread 531 formed on the inner surface are screwed to the outer surfaces of the first and second barrels 512 and 522. , is rotated by the tool and pushes the second barrel 522 of the second anchorage 52 outward in response to the distance moved to the second anchorage 52 side, and the primary anchorage and tension force by the first anchorage 51 and a pipe-type nut 53 that allows the introduced cable 40 to be re-fixed through the second anchorage 52 while maintaining a state in which the secondary tension force is introduced.

In addition, a cable through hole 532a is provided in the inner middle of the pipe-type nut 53, and when the pipe-type nut 53 is rotated by a tool and moved toward the second anchorage 52, the second By providing pressure to push the second barrel 522 of the anchorage 52 to the outside, the cable 40 primarily anchored by the first anchorage 51 is connected to the second barrel 522 of the second anchorage 52 . A second anchorage barrel support plate 532 to be re-fixed by the second wedge 521 press-fitted into it; characterized in that it is further installed or integrally formed.

In addition, a tool locking groove 533 is further formed on the entire or part of the outer surface of the pipe-type nut 53 to rotate the pipe-type nut 53 in the tightening or loosening direction by coupling various tools. do.

The effect on the cable-reinforced membrane structure strong in wind load of the present invention having such a configuration will be described as follows.

First, as shown in FIGS. 1 to 4, the cable-reinforced membrane structure strong in the wind load of the present invention, in a known membrane structure, further installs a plurality of cables 40 on the roof frame 20, but the Both ends of the cables 40 are double tensioned through the double anchorage 50 from the outside of the anchorage support plate 20a provided on both sides of the roof frame 20, respectively, so that the membrane structure itself safely resists excessive wind load (i.e., , the first anchorage to which most of the cable tension of the double anchorage 50 is applied by allowing the cables to elastically attenuate and alleviate the impact caused by external force) and also use the double anchorage 50 as the cable anchorage. A method of re-fixing the cable through the second wedge 521 of the second anchorage 52 when a slip occurs due to an external shock or strong wind during anchoring of the cable in the first wedge 511 of (51) The main technology component is to ensure the safety of the cable through the

That is, the present invention further installs a plurality of cables 40 on the roof frame 20, but both ends of the cables 40 through the double anchorage 50 having a function of fixing the cables over twice. Through the method of double tensioning each, when an external force such as an unexpected strong typhoon or tornado acts on the membrane structure during design of the membrane structure, it is installed on the roof frame 20 and tensioned through the double anchorage 50. By allowing the cables 40 to elastically attenuate and alleviate the impact caused by external force, the membrane structure itself can safely resist excessive wind loads by blocking the resonance phenomenon caused by the vibration of the membrane by wind pressure in advance. It is used as a major technical component.

In the known membrane structure to which the present invention is applied, as shown in FIGS. 1 and 2, a truss-shaped roof frame 20 having a dome shape is installed on the upper portion of the truss-shaped column frame 10 installed on both sides, and , Bracing 30 to control the horizontal displacement is installed between the outside of the pillar frame 10 and the ground, and on the upper surface of the pillar frame 10 and the roof frame 20, common knowledge in the art It has the form of installed makjae, which is omitted because it is known to anyone with

At this time, as shown in FIGS. 3 and 4 , the roof frame 20 includes a shape formed using an "H" beam 21 or a pipe 22, and in the case of the pipe 22, a circular shape Each pipe, not shown, is included, of course.

In addition, in the case of molding using the pipe 22 as the roof frame 20, the bending strength of each pipe having a rectangular or circular longitudinal cross-section and a circular pipe is very weak compared to the “H” beam 21 described above. has weaknesses.

Therefore, in the present invention, when the pipe 22 is used as the roof frame 20, a bending preventing member 221 having a "T" shape in the longitudinal direction from the upper surface of the pipe 22 is further installed. Thus, the bending strength of the pipe 22 itself can be significantly increased through the bending prevention member 221 .

On the other hand, in the case of forming using the "H" beam 21 as the roof frame 20 of the membrane structure in the present invention, as shown in FIG. 3 , the cable 40 is the lower number of the "H" beam 21 . On the upper surface of the flat plate 211, after tensioning using a tension device (not shown) at both ends in a state in which the same number is continuously arranged in the horizontal direction on both sides around the central vertical plate, the double anchorage 50 to be described later Using an enlarged view of FIGS. 1 and 2, it is fixed on the outside of the anchorage support plate 20a provided on both sides of the roof frame 20 (that is, both ends of the "H" beam 21), respectively, to apply tension to each cable. was introduced

In addition, in the case of forming using the pipe 22 as the roof frame 20 of the membrane structure, in the present invention, as shown in FIG. After tensioning at both ends using a tension device (not shown) in a state in which they are continuously arranged along the upper surface (see the solid line), the roof frame 20 both sides (that is, the pipe 22) using a double anchorage 50 to be described later. ) was fixed on the outside of the anchorage support plate 20a provided on each end) to introduce a tension force to each cable.

On the other hand, the roof frame 20 is formed by using the "H" beam 21 or the pipe 22, and the cables 40 are horizontally arranged on the upper surface of the lower horizontal plate 211 of the "H" beam 21 . When the cables 40 are sequentially arranged in the direction and tensioned, or cables 40 are continuously arranged on the upper surface of the pipe 22 having a square or circular longitudinal cross-section and then tensioned, some cables 40 become the "H" "There is a risk of being separated from the upper surface of the lower horizontal plate 211 of the beam 21 and the upper surface of the pipe 22 .

In particular, when the roof frame 20 is molded into the pipe 22 having a circular longitudinal cross-section, the cable 40 is more likely to be separated from the top surface of the pipe 22 because the top surface itself has a curved shape.

Accordingly, in the present invention, vertical cable departure prevention plates 212 are further installed in the vertical direction at both ends of the upper surface of the lower horizontal plate 211 of the "H" beam 21 on which the cable 40 is disposed.

Therefore, when arranging the same number of cables 40 consecutively on both sides of the central vertical plate (reference numerals omitted) on the upper surface of the lower horizontal plate 211 of the "H" beam 21, of course, the arrangement When a tension force is introduced to the cables 40 using a tensioning device, and then both ends are fixed on the anchorage support plate 20a using a double anchorage 50 to be described later, the cables 40 are the vertical type. The cable 40 is completely prevented from being separated from the upper surface of the lower horizontal plate 211 of the "H" beam 21 because it maintains the state in which it is hung by the cable departure prevention plate 212 as shown in FIG. 3 . .

In addition, when the bending prevention member 221 having a "T" shape in the longitudinal direction from the upper surface of the pipe 22 molded with the roof frame 20 is provided, the bending prevention member 221 In the transverse direction between the lower surface of the upper horizontal plate and the upper surface of the pipe 22 (that is, in the direction perpendicular to the upper horizontal plate and the pipe 22 of the bending prevention member 221), the cable through hole 222a in the center of the bottom surface ), the cable departure prevention plate 222 having a formed shape was further installed at a predetermined interval.

Therefore, when the cables 40 are continuously arranged on the upper surface of the pipe 22 used as the roof frame 20, the lower surface of the upper horizontal plate of the bending preventing member 221 having a "T" shape in its front section. A plurality of cables ( 40), but the cable departure prevention plate formed on both sides around the vertical plate (not written in the drawing part) of the bending prevention member 221 in the cable passage hole 222a of the cable departure prevention plate 222 ( The same number of cables 40 are continuously arranged in the cable passage hole 222a of the 222).

Then, when a tension force is introduced to the cables 40 arranged in this way using a tensioning device, and then both ends are fixed on the anchorage support plate 20a using a double anchorage 50 to be described later, as shown in FIG. As shown in the solid line, the cables 40 are sequentially arranged along the upper surface of the pipe 22 in a state in which they are inserted into the cable passage hole 222a formed in the center of the bottom of the cable departure prevention plate 222. do.

Therefore, even if the roof frame 20 of the membrane structure is a frame having any shape (that is, a frame having a "H" beam shape or a frame having a pipe shape, etc.), a plurality of cables 20 on the corresponding roof frame 20 are more It can be installed, and even if it is a plurality of cables 40 strained using the double anchorage 50, it is possible to completely prevent the cable 40 itself from being separated from the corresponding roof frame 20, so that the membrane structure against wind load It can further increase safety.

On the other hand, in the present invention, after each of the plurality of cables 40 installed on the roof frame 20 are tensioned, the cables are fixed to the anchorage support plates 20a provided at both ends of the roof frame 20 to each It is a fixture that introduces tension to the cable 40, and unlike the conventional anchorage having a one-time fixation and tension function, the pipe-type nut 53 is detachable between the first and second anchorages 51 and 52. Having the installed configuration, a double anchorage 50 for fixing and tensioning the end of the cable 40 over two times was applied.

At this time, the double anchorage 50 has a shape including the first and second anchorages 51 and 52 and the pipe-type nut 53, as shown in FIGS. 5 and 6, and each cable (40) The first and second anchorages 51 and 52 are sequentially installed double at a predetermined distance on the ends, but the first and second anchorages 51 and 52 respectively provided in the first and second anchorages 2 By screwing the pipe-type nut 53 to the outer surfaces of the barrels 512 and 522 , it directly contacts the anchorage support plate 20a provided in the roof frame 20 from the inside of the primary pipe-type nut 53 . Only by rotating the pipe-type nut 53 in the state that the cables 40 installed on the roof frame 20 by the first anchorage 51 having a shape of Secondary anchorage and tension are introduced at the ends of the cables 40 through the second anchorage 52 installed outside the pipe-type nut 53, that is, the cable ( through the first and second anchorages 51 and 52) 40) are fixed in a double layer and at the same time a double tension force can be introduced, so that the safety of the cable 40 to which the tensile force is applied can be secured.

Among the components of the double anchorage 50, the first anchorage 51 has a shape composed of a first wedge 511 and a first barrel 512, and is installed by being inserted into the outside of the cables 40 One end of the first barrel 512 is installed in close contact with the anchorage support plate 20a provided in the roof frame 20, and the first wedge 511 is coupled to the outer surfaces of the cables 40, and then the first wedge 511 ) is pushed into the first barrel 512, and a tensile force is applied to the cable 40 penetrating the first wedge 511 using a tensile device not shown to introduce the tensile force. One wedge 511 is pushed into the inside of the first barrel 512 and is tightly fitted and fixed, and at the same time fixing the cables 40 primarily on the anchorage support plate 20a of the roof frame 20, the first It performs the function of maintaining the introduced tension (ie, tension).

In addition, the first wedge 511 among the components of the first anchorage 51 has a conical shape as a whole when combined with each other like the conventional wedge, and the cable 40 passing through the center is coupled to the outer surface. When the cables 40 are tensioned, they are pushed into the inside of the first barrel 512 and fitted tightly, and at the same time primarily fix the outer surfaces of the cables 40 installed on the roof frame 20 , and at the same time It performs the function of maintaining the tension that was primarily introduced into the body.

In addition, the first barrel 512 has a cylindrical shape having a conical inner surface corresponding to the outer surface shape of the first wedge 511 like the conventional barrel, and unlike the conventional barrel, the outer surface is a pipe-type nut to be described later (53) has a form in which a thread (512a) is formed so that it can be screwed, and passes through the first wedge (511) through a tension device in a state in which one end is supported on the anchorage support plate (20a) of the roof frame (20) When a tensile force is applied to the cables 40 from the outside to introduce a tensile force, the first wedge 511 is pushed into the inside and the cables 40 installed on the roof frame 20 are primarily fixed. It performs a supportive function.

In addition, the second anchorage 52 has a shape composed of a second wedge 521 and a second barrel 522 , and one end inside the first anchorage at a distance away from the first anchorage 51 . In the state screwed to the other inner surface of the pipe-type nut 53 screwed to the outer surface of the first barrel 512 of 51, the operator rotates the pipe-type nut 53 using a tension device not shown. Due to this, a tensile force is secondarily applied to the cable 40 passing through the second wedge 521 and when the tensile force is introduced, the second wedge 521 is pushed into the inside of the second barrel 522 and is tightly fitted. It is fixed and performs a function of secondarily fixing the cables 40 installed on the roof frame 20 and maintaining the secondly introduced tension.

In addition, the second wedge 521 among the components of the second anchorage 52 has a conical shape as a whole when combined with the first wedge 511 of the first anchorage 51 described above, and penetrates the center. When the second barrel 522 is moved to the outer end side of the cable through the rotation of the pipe-type nut 53 in a state in which the cables 40 are coupled to the outer surface to introduce a secondary tension force, the second barrel ( 522) is pushed into the inside and tightly fitted, and serves to fix the outer surface of the cable 40 secondarily and at the same time maintain the tension force introduced secondarily into the cable.

In addition, the second barrel 522 also has a cylindrical shape having a conical inner surface corresponding to the outer surface shape of the second wedge 521 like the second barrel 522 of the second anchorage 52 described above. However, the outer surface has a screw thread 522a so that a pipe-type nut 53 to be described later can be screwed, and one end of the inner surface is screwed to the outer surface of the first barrel 512 of the first anchorage 51 . When a second tensile force is applied to the cable 40 passing through the second wedge 521 through a tension device in a state of being screwed to the other inner surface of the pipe-shaped nut 53 to introduce a tensile force, the second The wedge 521 is pushed into the inside and serves to support the cable 40 so that the second wedge 521 is secondarily fixed therein.

On the other hand, the pipe-type nut 53 is a general pipe having an inner diameter corresponding to the outer diameter of the first and second barrels 512 and 522 provided in the first and second anchorages 51 and 52, respectively. It has a form in which a screw thread 531 is formed on the inner surface.

Such a pipe-type nut 53 is provided between the first and second anchors 51 and 52 respectively installed at a predetermined distance apart from each other on the cables 40 between the first and second barrels 512 ( It has a form screwed to the outer surface of the 522 and, when rotated by a tool, moves the second barrel 522 of the second anchorage 52 to the outside (that is, in response to the distance moved to the second anchorage 52). The cables 40 having a state primarily fixed by the first anchorage 51 by pushing in the direction further spaced apart from the first anchorage 51) through the second wedge 521 of the second anchorage 52 It performs a function of re-fixing (ie, secondary) so that the cables 40 installed on the roof frame 20 are double-settled and tensioned.

In addition, in the present invention, a second anchorage barrel support plate 532 having a cable through hole 532a is further installed or integrally formed in the inner middle portion of the pipe-type nut 30 .

Accordingly, when the pipe-type nut 53 is rotated by a tool and moved toward the second anchorage 52 , the second anchorage barrel support plate 532 is moved within the second barrel 522 of the second anchorage 52 . Since it provides pressure to push outward in response to the number of rotations and the moving distance of the pipe-type nut 53 from the moment it is in close contact with the cross section, the cables 40 to which the primary tension force is introduced by the first anchorage 51 are The second barrel 522 of the second anchorage 52 that is moved outward in response to the rotation amount of the pipe-type nut 53 moves, and the second wedge 521 installed therein is connected to the cable 40. is re-fixed, as well as a secondary tension force is introduced into the cable 40 itself installed on the roof frame 20.

In addition, in the present invention, by further forming a tool locking groove 533 on the entire or part of the outer surface of the pipe-type nut 53, the pipe-type nut 53 itself can be used in various forms such as a pipe wrench as well as a monkey spanner or pliers. It can be easily rotated in the tightening or loosening direction using a tool with

On the other hand, by using the cable anchorage to which the present invention is applied, a process of double fixing each of the plurality of cables 40 installed on the roof frame 20 and introducing a double tension force at the same time will be described as follows.

First, the first anchorage 51 is schematically coupled to the outside of the cable 40 disposed on the roof frame 20, and then a primary tension force is introduced into the cable 40 through a method of tensioning using a tensioning device. After this, the inside of one end of the pipe-type nut 53 is screwed to the outside of the first barrel 512 of the first anchorage 51 as shown in FIG. 5 and the other end of the pipe-type nut 53 is screwed inside The second anchorage 52 is roughly screwed together.

Then, the second anchorage barrel support plate 532 provided in the pipe-type nut 53 by rotating the pipe-type nut 53 in a predetermined direction (eg, in the loosening direction or counterclockwise) using a tool a necessary number of times. ) to strongly push the second barrel 522 of the second anchorage 52 to the outside, the second anchorage 52 corresponds to the movement distance of the pipe-type nut 53 and the first anchorage 51 The second wedge 521 installed in the second barrel 522 of the second anchorage 52, away from the second anchorage 52, doubles the cable 40 and at the same time fixes the cable 40 and the roof frame together with the first anchorage 51. A double tension is introduced into the cables 40 installed on the 20 itself.

Therefore, even if slip occurs due to impact or strong wind applied from the outside during fixation in the first wedge 511 of the first anchorage 51 to which most of the cables 40 of the double anchorage 50 are tensioned, , since the second wedge 521 of the second anchorage 52 can fix the cables installed on the roof frame 20 again, not only can the safety of the cable 40 be completely secured, but also the roof Safety against wind pressure applied to the frame 20 can also be significantly secured, and in particular, reliability according to the cable anchorage can be greatly improved.

In addition, in the present invention, a plurality of cables 40 to be installed on the roof frame 20 are fixed in a double layer using the double anchoring port 50 presented above, respectively, and at the same time, while introducing a double tension force, maintaining When you want to dismantle the second anchorage 52 for maintenance, etc., it can be easily disassembled simply by rotating the pipe-type nut 53 in the opposite direction (eg, tightening direction or clockwise direction) as described above. The cost and time associated with maintenance can be significantly reduced.

In the foregoing detailed description of the present invention, although it has been described with reference to preferred embodiments of the present invention, those skilled in the art or those having ordinary knowledge in the art will have the spirit of the present invention described in the claims to be described later. And it will be understood that various modifications and variations of the present invention can be made without departing from the technical scope.

10: column frame
20: roof frame 20a: anchorage support plate
21 : "H" Beam
211: lower horizontal plate 212: vertical cable departure prevention plate
22: pipe 221: bending prevention member
222: cable separation prevention plate 222a: cable through hole
30: Bracing for prevention of fall
40: cable
50: double anchorage
51: first anchorage 511: first wedge
512: first barrel 512a: thread
52: second anchorage 521: second wedge
522: second barrel 522a: thread
53: pipe type nut 531: thread
532: second anchorage barrel support plate 532a: cable through hole
533: tool locking groove

Claims (8)

A roof frame having a dome shape is installed on the upper portion of the column frame installed on both sides, and between the outside of the column frame and the ground, bracings for preventing fall that can control column displacement are installed, and the upper surface of the column frame and the roof frame In the membrane structure of the structure in which the makjae is installed,
A plurality of cables are further installed on the roof frame, and both ends of the cables are double tensioned through the double anchorage from the outside of the anchorage support plates respectively provided on both sides of the roof frame,
The roof frame includes one molded using a pipe,
The plurality of cables are continuously arranged along the inner bottom or upper surface of the pipe,
When the plurality of cables are continuously arranged along the upper surface of the pipe, a bending preventing member having a "T" shape in its front section is installed in order to increase the bending strength of the pipe in the longitudinal direction from the upper surface of the pipe, and ,
In the transverse direction between the lower surface of the upper horizontal plate of the bending preventing member and the upper surface of the pipe, a cable separation prevention plate having a cable passage hole formed in the center of the bottom is installed at a predetermined interval,
The double anchorage,
It has a form consisting of a first wedge and a first barrel having a thread on the outer surface, and when the cable is tensioned by a tensioning device in a state where one end of the first barrel is coupled to the outside of the cable to be supported on the anchorage support plate a first anchorage for anchoring the cable through a first wedge installed in one barrel to introduce a primary tension force;
It has a form consisting of a second wedge and a second barrel having a screw thread on the outer surface, and is coupled to the outside of the cable at a location separated from the first anchorage by a predetermined distance between the first and second barrels of the first anchorage. When the pipe-type nut screwed to the outside is rotated in a predetermined direction by the tool and pushed toward the end of the cable, a second anchorage for fixing the cable through a second wedge installed in the second barrel to introduce a secondary tension force; ;
It has a form screwed to the outer surface of the first and second barrels between the first and second anchorages having a predetermined distance from each other through a thread formed on the inner surface, and is rotated by a tool and corresponds to the distance moved toward the second anchorage to push the second barrel of the second anchorage outward, and to allow the cable to which the primary anchoring and tension force have been introduced by the first anchorage to be re-fixed through the second anchorage while maintaining the state in which the secondary tension force is introduced pipe nut; including,
A cable through hole is provided in the inner middle of the pipe-type nut, and when the pipe-type nut is rotated by a tool and moved toward the second anchorage, a pressure for pushing the second barrel of the second anchorage to the outside is provided. Strong against wind load, characterized in that the second anchorage barrel support plate is further installed or integrally formed so that the cable firstly anchored by the first anchorage is re-fixed by the second wedge press-fitted into the second barrel of the second anchorage Cable-reinforced membrane structure.
delete delete delete delete delete delete The method according to claim 1,
A cable-reinforced membrane structure strong against wind load, characterized in that a tool locking groove is further formed on the entire or part of the outer surface of the pipe-type nut to rotate the pipe-type nut in the tightening or loosening direction by coupling various tools.

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