KR101675369B1 - Apparatus and Method for Simultaneous and Equal Tensioning Tendon - Google Patents

Abstract

The present invention can fix a plurality of tension members at the same time by tensioning them, and even if the lengths of the plurality of tension members are different before they are still tensed, To " a simultaneous equal tensioning apparatus for multiple tensions and a simultaneous equal tensioning method for multiple tensions using the same. "

Description

TECHNICAL FIELD [0001] The present invention relates to a synchronous uniform tension apparatus for multiple tension members, and a simultaneous equal tension method for multiple tension members using the same.

The present invention relates to an apparatus for tensioning a tension member used for placing a tension member such as a stranded wire or a steel bar on a sheath pipe embedded in a concrete structure and introducing a tension force into the concrete structure after the tension member is tensed, A method of fixing a plurality of tension members at the same time by tensioning, wherein a plurality of tension members are made to have substantially the same stress state even if they have different embedding lengths in a state before they are still tensed, Quot; simultaneous equal tensioning apparatus for multiple tensions and a simultaneous equal tensioning method for multiple tensions using the same, "which permits the same tension to be" evenly "introduced into a plurality of tensions.

In order to introduce a tensile force into a concrete structure by using a tensile material in a state where a sheath pipe is embedded in a concrete structure such as a girder and a tensile material is disposed in the sheath pipe, the tensile material must be fixed by tension. The tension device of such a tension material is also called a "tension device ".

Korean Patent No. 10-0897535 discloses an apparatus for simultaneously tensioning a plurality of tension members under the name "simultaneous multi-tensioner ". However, in this conventional technique, only a plurality of tension members are sought to "tense" and settle at the same time, and an "even" tension of a plurality of tension members more important than simultaneous tension, that is, There is no consideration of settlement, nor is it accomplishing this.

When a plurality of tensions are disposed within the sheath tube embedded in the concrete structure, each tensions is arranged in a different form. For example, when a plurality of tension members are arranged in a buried sheath tube curved in a horizontally extended girder, the curved forms in which the respective tension members are placed are different from each other. Thus, each of the tensions placed in the concrete structure is still pulled by the tensioning device, so that it has a different "buried length" even when no full-scale tensional force is introduced. Here, the "buried length" of the tensile material means the length of the tensile material disposed in the concrete structure in a section from one end to the other end of the concrete structure.

Although a plurality of tensions disposed in a concrete structure differ from each other in terms of their respective lengths of embedding, in the prior art, without consideration of the tensions of these tensions, only a plurality of tensions at the end of the concrete structure, And at the same time, the same stroke is pulled to introduce a tension force to fix. In other words, despite the fact that the respective tensions are arranged in the concrete structure differently and have different filling lengths, in the prior art, all the tensions are drawn at the same position and then simultaneously pulled at the same stroke, . In this case, the tension material having a relatively short buried length will be introduced with a large tension force. When the tension material having a relatively long buried length is pulled by the same sclock, the arrangement shape in the concrete structure is changed, Will be introduced. In this way, in the conventional tension device, since the buried length of each tensile material can not be taken into consideration at all, substantially the same tensile force is introduced into each tensile material even though the same tensile force is applied.

If different tensile forces are introduced into a plurality of tensile members, not only can the tensile members with excessive tensile force be torn during the tensile process, but also with the tensile force introduced during the joint use of the structure, the maximum load resistance The load exceeding the capacity may be loaded, or the maximum load resistance may be lowered due to the durability deterioration. As a result, the load may be abruptly broken, and the breakage of the tension member causes serious problems such as collapse of the structure.

Korean Registered Patent No. 10-0897535 (2009. 05. 14. Announcement).

The present invention has been developed in order to overcome the limitations of the prior art as described above, and it is an object of the present invention to provide an apparatus and a method for adjusting the tension of a plurality of tension members, And to provide a tensioning device and tensioning method.

In order to achieve the above object, according to the present invention, there is provided a binding module comprising: a binding module for binding and binding a plurality of tensions; a tension module for simultaneously tensing and tensioning a plurality of tensions; a fixation wedge for fixing the tensions in a tense state by the fixing wedge And a fusing module for pushing against the fitting of the plate; The tension module includes a cylindrical tension cylinder having a central mounting hole formed therein, and a tension piston engaged and retracted to the tension cylinder; The binding module includes an intermediate support spring member positioned at an interval between the upper binding plate, the lower binding plate, and the upper and lower binding plates, and is inserted into the central mounting hole of the tension cylinder; A plurality of second binding holes through which the tensile material passes are formed in the lower binding plate, a second wedge fitting portion tapered is provided in the second binding hole, and a plurality of first binding holes through which the tension member penetrates are formed on the upper binding plate , The first wedge-in member and the inserted compression spring member are inserted and positioned in the first binding hole, and the lower wedge to be fixed by being fitted in the second wedge-fitting portion while surrounding the outer surface of each tension member is disposed on the lower surface of the upper binding plate ; A plurality of tension members having different stress states are disposed in the first binding hole and the second binding hole and the lower wedge is sandwiched between the second wedge fitting portions while the lower wedge is wrapped around each tension member, The upper wedge is inserted into the first wedge-in member while wrapping the outer surface of each tension member, and then the tensioning cylinder of the tensioning module advances and the tensioning cylinder rises backward. Then, according to the initial embedding length of each tensioning member, The spring member is compressed to a contraction amount in inverse proportion to the initial burying length of the tension member and at the same time the upper wedge and the first wedge member clamped to the tension member move into the first binding hole and the intermediate support spring member is compressed, The second wedge fitting portion is fixed to the second wedge fitting portion so that a plurality of the tension members are made to have the same burying length And then bound and bound to the binding module so as to be ready for tension.

In order to achieve the above-mentioned object, the present invention also includes a binding module coupled to a plurality of tension members, a tension module for simultaneously tensioning the plurality of tension members, and a fixing module for fixing the tension members in a tense state by the fixing wedge Using a tension device fixing device; The binding module includes an upper supporting plate, a lower binding plate, and an intermediate support spring member positioned between the upper and lower binding plates. A second binding hole having a second wedge-fitting portion is formed on the lower binding plate, 1 binding hole is formed on the upper binding plate, the first wedge-in member and the insertion compression spring member are inserted and positioned in the first binding hole, and the lower wedge is disposed on the lower face of the upper binding plate; The tension module is activated so that the lower wedge is sandwiched between the second wedge-in portions with each tension member wrapped therebetween, so that each tension member is bound to the binding module. After a plurality of tension members are simultaneously pulled and tensed by the operation of the tension module, To the fitting portion of the fusing plate to fix the tension member in a taut state; In the process of binding each tension member to the binding module, after the upper wedge is sandwiched between the first wedge-in members with each tension member wrapped around, the tension spring of the tension module causes each of the inserted compression spring members to follow the initial filling length of each tension member The intermediate support spring member is compressed as well as being compressed at different shrinkage amounts so that a plurality of tension members are made to have the same burying length so that the binding module and the plurality of tension members are bound together to make each tension member ready for tension The method comprising the steps of:

According to the present invention, not only a plurality of tension members are simultaneously tensioned and fixed but also each tension member is arranged in a deflected state different from each other so that they have different embedding lengths, So that substantially the same tensile force is uniformly introduced into each of the tensile members to uniformly apply a tensile force to the plurality of tensile members and thereby the excessive tensions are introduced to the specific tensile members during the joint use of the structure, The effect that can be prevented is exhibited.

1 is a schematic perspective view showing a state in which the equal tension device according to the present invention approaches a concrete structure in order to bury a tension member.
FIG. 2 is a schematic exploded perspective view showing a part of the uniform tension device of the present invention cut out and showing it in a half sectional state.
3 is a schematic half cross-sectional perspective view showing an initial fastening state in which the equal tension device according to the present invention is holding a tension member.
4 is a schematic cross-sectional view of the state shown in Fig.
Figure 5 is a schematic enlarged view of the circle K portion of Figure 4;
FIGS. 6 to 10 are schematic cross-sectional perspective views corresponding to FIG. 3, which sequentially show a process of binding and fixing a tension member with a binding module according to the present invention.
FIGS. 11 and 12 are schematic cross-sectional views, respectively, corresponding to FIG. 4, which sequentially illustrate a process for tightly binding a uniform tension device and a tension member prior to tensioning the tension member in the present invention.
FIG. 13 is a schematic cross-sectional view corresponding to FIG. 4 sequentially showing a process of introducing a tension force by simultaneously tensing a tension member in the present invention.
FIG. 14 is a schematic cross-sectional view corresponding to FIG. 4 showing a process of fixing a tense material to a fusing plate in sequence according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Although the present invention has been described with reference to the embodiments shown in the drawings, it is to be understood that the technical idea of the present invention and its essential structure and operation are not limited thereby. For reference, in the present specification, the direction in which the tension member is pulled so that the tension member is tensioned is referred to as "rear ", and the opposite direction is referred to as" forward ". In particular, since the tension device is shown vertically and the tension member is shown extending in the vertical direction, the rear side is referred to as "upper side ", and the front side is also referred to as" lower "

1 is a schematic view showing a state in which a simultaneous equal tension apparatus 100 (hereinafter abbreviated as "uniform tension apparatus") of a plurality of tensions according to the present invention approaches a concrete structure 300 for bending the tension member S And FIG. 2 is a schematic exploded perspective view of a portion of the uniform tension device 100 of the present invention taken in a sectional view. As shown in FIG. In Fig. 2, the illustration of the tension member S is omitted. 3 is a schematic cross-sectional perspective view showing an initial binding state in which the uniform tension device 100 according to the present invention is holding the tension member S, and FIG. 4 is a schematic sectional view of the state shown in FIG. 3 Are shown. 5 is a schematic enlarged view of the circle K portion of FIG. 4 showing in detail the fitting configuration of the first wedge-in member 111 and the upper wedge 112 in the binding module 1. As shown in FIG.

The uniform tension device 100 according to the present invention comprises a binding module 1 which is rigidly gripped and caught by a tension member S so as to pull the tension member S and a tension module 2 And a fixing module 3 for pushing the fixing wedge 201 to the fitting portion of the fixing plate 200 so that the tensioned state of the tensioned material is fixed by the fixing wedge.

First, the tension module 2 will be described. In the present invention, the tension module (2) comprises a tensioning cylinder (21) and a tensioning piston (22). The tension cylinder 21 is a tubular member having a central installation hole 23 formed therein, and is a member coupled to the tension piston 22 and moving back and forth in the direction of extension of the tension member. The tension piston (22) is made of a tubular member like the tension cylinder (21).

In the illustrated embodiment, the tension cylinder 21 is formed with a pressure space 24 rearwardly, and a tension piston 22 is inserted in the pressure space 24 of the tension cylinder 21 to be embedded therein. The tension cylinder 21 is provided with a pressure supply part 210 and a pressure discharge part 211 so that fluid or gas can be injected and discharged into the pressure space of the tension cylinder 21. Although not shown in the figure, a channel is connected to the pressure supply unit 210 and the pressure discharge unit 211, respectively. A piston support 25 for preventing the tension piston 22 from excessively advancing forward is provided at the front opening in the pressure space 24 of the tension cylinder 21. In this configuration, as the fluid or gas is injected into the pressure space 24 of the tension cylinder 21 and pressure is formed, the tension cylinder 21 moves forward and backward.

In order to pull the tension member (S), the tension member (100) should firmly bend the tension member (S). In the present invention, the binding module 1 is composed of an upper binding plate 11 and a lower binding plate 11 which are vertically spaced apart from each other in the vertical direction, (12), and an intermediate support spring member (13) located at an interval between the upper and lower binding plates (12). The upper and lower binding plates 11 and 12 are each made of a cylindrical member having a thickness in the vertical direction and both are inserted and positioned in the center mounting hole 23 of the tension cylinder 21. [

The lower binding plate 12 is formed with a plurality of second binding holes 120 through which the tensile material S passes and a second wedge fitting portion 121 is formed at the upper inlet of the second binding hole 120 . That is, the second wedge fitting portion 121 is formed at the upper entrance of the second binding hole 120 so that the lower wedge 123 is tapered so that the lower wedge 123 becomes narrower as it goes down to be fixed to the upper portion.

An intermediate support spring member 13 is disposed on the upper surface of the lower binding plate 12 and an upper binding plate 11 is placed on the upper portion of the intermediate support spring member 13. That is, an intermediate support spring member 13 is provided between the upper binding plate 11 and the lower binding plate 12. A plurality of first binding holes 110 are formed in the upper binding plate 11 so that the tension member S can pass through. A first wedge-in member 111 is provided on the upper side of the insertion compression spring member 113 and is connected to the first binding hole 110 As shown in FIG. That is, the lower surface of the first wedge-in-place member 111 is supported by the insertion and compression spring member 113. The first wedge-in member 111 is a cylindrical member that is inserted into the first binding hole 110 and moves upward and downward. The upper entrance has a smaller diameter as it goes down so that the upper wedge 112 is fitted and fixed And has a tapered shape. The upper wedge 112 is fitted in the first wedge-in member 111 while covering the outer surface of the tension member S, as described later.

The upper end of the tension member S is inserted into the lower entrance of each of the first binding holes 110 on the lower surface of the upper binding plate 11 and is fixed to the second wedge fitting portion 121 of the second binding hole 120 A lower wedge 123 is disposed.

The fixing module 3 is a member for pulling the tensioned tension member S and fixing it to the lower surface of the tension module 2. Specifically, the upper surface exists and the lower portion is open, A fixation cylinder 31 in which a moving space is formed and a fixed wedge 201 which is mounted in the moving space of the fixing cylinder 31 and moves forward and backward to push the fixing wedge 201 of the tension member S, And a fixing piston (32) for engaging with the fitting portion. A stopper portion 310 for limiting the movement of the fixing piston 32 is protruded inward in the movement space of the fixing cylinder 31. The fixing piston 32 is fixed to the upper surface plate of the fixing cylinder 31 and the stopper portion 310, and is moved forward and backward. The fixing piston 32 is formed of a plate member having a thickness and is formed with a plurality of through holes 320 through which the tension member S passes. The upper surface plate of the fixing cylinder 31 is also formed with a through hole 301 communicating with the through hole 320 of the fixing piston 32 to allow the tension member S to pass therethrough.

In the embodiment shown in the drawing, the fixing cylinder 31 is provided with a pressure injection portion 33 through which a fluid or a gas is injected, so that a pressurized fluid or a pressurized gas is injected through the pressure injection portion 33, (32) to the front.

In order to equally strain the plurality of tensions S simultaneously using the uniform tension device 100 according to the present invention, the tensioned material S laid in the concrete structure 300 is applied to the equal tension device 100 of the present invention . First, as shown in FIG. 1, a fixing plate 200 is disposed on a fixing surface to which the tension member S is tension-fixed in the concrete structure 300, as a preparation step for tensioning the tension member S at first. A plurality of tongue passage holes are formed in the fixing plate 200 and a tapered wedge fitting portion is formed at the upper entrance of the tie passage hole so as to have a smaller diameter as it goes down. The fixing wedge 201 is inserted into the fixing wedge fitting portion of the tension member through hole in the condition that the fixing wedge 201 is inserted into the tension member passage hole of the fixing member 200 and protruded outside the concrete structure 300 . However, the fixing wedge 201 is not yet deeply inserted so as to be completely fixed to the fixing wedge fitting portion.

The uniform tension device 100 of the present invention is closely attached to the fixing surface of the concrete structure 300 with the fixing plate 200 installed and the tension member S on the outer surface of the concrete structure 300. 3 and 4, the fixing plate 200 is fixed to the lower portion of the fixing cylinder 31 of the fixing module 3 in an initial binding state in which the even tension device 100 is installed to hold the tension member S, And the tension member S sequentially passes through the fixing piston 32, the upper surface plate of the fixing cylinder 31, the lower binding plate 12, and the upper binding plate 11 sequentially. At this time, the lower wedge 123 surrounds each tension member S on the upper surface of the lower binding plate 12. When the lower wedge 123 is not yet inserted into the second wedge fitting portion 121 do.

On the other hand, when the tension member S passes through the upper coupling plate 11, the tension member S passes through the center of the insertion compression spring member 113 located in the first coupling hole 110. [ That is, the inserted compression spring member 113 wraps the tension member S. Therefore, in the initial binding state, the first wedge-in member 111 is positioned on the first binding hole 110 on the upper surface of the upper binding plate 11, and the upper wedge 112 surrounds the respective tension members S Is inserted into the first wedge-in portion of the first wedge-in-buckle member (111). Of course, the upper wedge 112 is not yet deeply fitted so as to be completely fixed to the first wedge fitting portion 111 of the first wedge-

FIGS. 6 to 10 are schematic cross-sectional perspective views corresponding to FIG. 3, which sequentially show steps for tightly connecting the uniform tension device 100 and the tension member S before straining the tension member S. FIG. . 11 to 14 are schematic cross-sectional views corresponding to FIG. 4, which sequentially illustrate the steps for firmly binding the uniform tension device 100 and the tension member S before straining the tension member S , And two sequential steps are shown as (a) and (b), respectively. 11 (a) is the same as FIG. 4, and FIG. 11 (b) is the same as FIG. 12 (a). 12 (b) is the same as FIG. 13 (a), and FIG. 13 (b) is the same as FIG. 14 (a). Fig. 11A is a cross-sectional view of the state of Fig. 6, Fig. 12A is a cross-sectional view of the state of Fig. 7, and Fig. Sectional view. Fig. 14 (a) is a sectional view of the state of Fig. 9, and Fig. 14 (b) is a sectional view of the state of Fig. In FIGS. 6 to 10, only three of the plurality of tension members S are shown for the sake of convenience, and the one-dot chain line in FIGS. 11 to 14 is a cross-sectional view of each member between the members shown in (a) Is a reference merit evaluation vessel for showing the change in height of the reference water.

As described above, a plurality of tensions have different burial lengths, respectively, even in the initial placement state before the tensioning operation is performed. In other words, since the shapes of the respective tensions are different in the concrete structure, for example, the tensions disposed in a relatively straight shape within the girder have a relatively short buried length, In the case of a closely spaced tie, each tie has a different length of burial, as if it had a relatively long buried length. In order to express that the embedded lengths of the tensions are different from each other, for convenience, the plurality of tensions are divided into S1, S2, and S3 for convenience in FIGS. 6 to 14. That is, the first torsion spring S1, the second torsion spring S2, and the third torsion spring S3, which are indicated by reference numerals S1, S2, and S3 in the drawing, are not yet tensed by the tension module 2 Each of them has a different arrangement shape in the concrete structure, and the length of each landing is different. The first torsion spring S1 indicates a relatively long buried length and the second torsion spring S2 indicates a shorter buried length than the first torsion spring S2, The shortest buried length is shown. Longer embedding length of the tectonics means that the shape of the tectonics placed in the concrete is more curved. In the case of a tie having a relatively small buried length, when the tie materials having different buried lengths are pulled at the same stroke at the same time, the tensile material is pulled in full after the occurrence of a slight stroke, and the tie is introduced into the tie. On the other hand, in the case of a tie having a relatively long buried length, the tensile force is pulled only after a relatively larger stroke is generated to introduce a tensile force. That is, in the case of a tie having a short buried length, only the initial small tie stroke is only used to straighten the curved shape of the tie when the stroke is introduced by the tension device. Therefore, , The stroke is used for the tension of the tension member and the tension member is introduced into the tension member. On the other hand, for a tie having a long buried length, when a stroke is introduced by a tension device, the initial stroke is mostly used to straighten the curved shape of the tie, and only after the tie is straightened to some extent, It is used for tension.

In order for an equal tension force to be simultaneously applied to a plurality of tensions, the plurality of tensions must be pulled to the same size back stroke by operating the tension module 2 in a state in which a plurality of tensions are fully engaged with the binding module 1. That is, the operation of pulling the tension member backward for the full introduction of the tension force proceeds only after a plurality of tension members are completely joined to the binding module 1. According to the present invention, in the course of a state where a plurality of tension members are fully coupled to the coupling module 1, the insertion compression spring 113 and the intermediate support spring member 13 The plurality of tensile members are bound to the binding module 1 at the same time until the buried length is equalized.

The lower wedge 123 provided on the lower surface of the upper binding plate 11 may be bent in the second binding hole 120 formed in the lower binding plate 12 in a state of wrapping the tension member The second wedge-fitting portion 121 of the second wedge-fitting portion 121, as shown in Fig. In the present invention, the following operation is performed in a process in which the lower wedge 123 is firmly fitted in the second wedge fitting portion 121 in a state that the respective tension members are wrapped.

In the initial binding state shown in FIGS. 3, 6, and 11A, the first wedge-in member 111 is inserted and positioned in the first binding hole 110 of the upper binding plate 11 The upper wedge 112 is in a state of being inserted into the first wedge-in portion of the first wedge-in-place member 111 in a non-fixed state while each tension member S is wrapped. The first wedge-in member 111 is supported by the insertion compression spring member 113 in the first binding hole 110, respectively.

Following this condition, the tension module 2 is actuated to advance the tension piston 22 forward. That is, fluid or gas is injected into the pressure space 25 through the pressure supply part 210 of the tension cylinder 21 to form the pressure, thereby pushing the tension piston 22. Since the tensioning piston 22 pushes the fixing cylinder 31 of the fixing module 3 and the fixing cylinder 31 is in close contact with the fixing surface of the concrete structure 300, when the tensioning piston 22 is pushed, The cylinder 21 is moved rearward to rise. As the tension cylinder 21 ascends rearward, the binding module 1 itself is raised together with the tension cylinder 21. At this time, on the upper surface of the upper binding plate 11, the tension members S1, S2, The upper wedge 112 is gradually inserted deep into the first wedge-in member 111, and finally it is fully inserted and fixed.

Thus, the upper wedge 112 wraps each of the tension members S1, S2, and S3 so that the water is inserted and fixed in the first wedge-in member 111, and then the tension cylinder 21 is further raised rearward. As a result, each of the tensile members S1, S2, and S3 is pulled and tensile strain is introduced into the elongated shape. At this time, since the first wedge-in member 111 is supported by the insertion compression spring member 113, a tension force is introduced into each of the tension members S1, S2, and S3, So that the inserted compression spring member 113 is contracted. However, as mentioned above, the third tensile material S3 has a short buried length, so that the third tensile material S3 is pulled only slightly backward to introduce the tensile force. On the other hand, since the first torsion spring S1 has a relatively long burying length as compared with the third torsion spring S3, the torsion force is introduced only when the first torsion spring S1 is pulled backward to some extent.

Therefore, the tension members S1, S2, S3 are not completely engaged with the binding module 1, and only the upper wedge 112 covers each of the tension members S1, S2, S3, S2 and S3 are different from each other even when the tension cylinder 21 is lifted to the back stroke with the same stroke in a state where the tension spring 21 is inserted into the compression spring member 111 113) will also vary. That is, in the case of the first tensional material S1, the relatively small amount of tensional force is introduced even in the same stroke, so that the shrinkage amount of the insertion compression spring member 113 is also relatively small. In the case of the third tensional material S3, A relatively large tensile force is introduced, so that the amount of shrinkage of the inserted compression spring member 113 is also relatively large.

The insertion compression spring member 113 is contracted when the tension members S1, S2, and S3 are still pulled backward without being fully fixed to the binding module 1, Is the largest for the third tensional element (S3) and the smallest for the first tensional element (S1).

Therefore, as shown in Figs. 7 and 11 (b), the insertion compression spring member 113 for each of the tensions S1, S2, S3 is compressed and deformed at different shrinkage amounts, (111) is inserted deeper into the first binding hole (110). When the tension cylinder 21 is moved backward and moves up, the first tension S1 having a relatively large embedding length is subjected to a tension force only after the tension cylinder 21 has risen to some extent, so that the same backward stroke (the backward rise of the tension cylinder The length of the second tension member S2 and the length of the third tension member S3 are relatively small, so that the insertion compression spring member 113 is compressively deformed with a relatively small amount of contraction. However, The tensile force is introduced immediately after the rise of the tension cylinder 21 and the tensile force introduced due to the same rear stroke is relatively large so that the insert compression spring member 113 is compressively deformed with a larger amount of contraction. That is, when the tension cylinder 21 is initially raised, the buried length of each tensile material is inversely proportional to the amount of compression shrinkage of the compression spring member 113.

In this way, the inserted compression spring member 113 is compressed differently in inverse proportion to the buried length of each of the tensile members S1, S2, and S3. At the same time, the inserted compression spring member 113 is compressed between the upper binding plate 11 and the lower binding plate 12 The intermediate supporting spring member 13 that is present is also compressed. The upper and lower binding plates 11 and 12 are brought closer to each other so that the lower wedge 123 comes closer and closer to the second wedge fitting portion 121. [

When the tension cylinder 21 continues to rise further backward, the binding module 1 itself is raised together with the tension cylinder 21, so that the above-mentioned operation, that is, the first tension S1, The inserted compression spring member 113 is further compressed while the third compression spring member 113 is stretched and the third tension member S1 is hardly stretched while the intermediate compression spring member 113 is further compressed do. In this state, since the lower wedge 123 is not completely fixed to the second wedge fitting portion 121, a plurality of tensions are not yet fully engaged with the binding module 1.

When the tension cylinder 21 further ascends rearward, the above-described operation is repeated so that the intermediate support spring member 13 is compressed and the upper binding plate 11 and the lower binding plate 12 are brought close to each other, The lower wedge 123 is sandwiched and fixed to the second wedge-in portion 121 by wrapping each tension member as shown in Figs. 12 (a) and 12 (b), so that each tension member is fixed to the lower binding plate 12 ).

In the present invention, even though each of the tensions has different burying lengths in the initial binding stage (before the lower wedge is firmly fitted and fixed in the second wedge-in portion) when the respective tensions start to be bonded to the binding module 1 The respective tension members are completely fixedly fixed to the lower binding plate 12 by the engagement of the lower wedge 123 and the second wedge fitting portion 121 and are tightly coupled to the binding module 1 The respective tension members are tied to the lower binding plate 12 while being differentially pulled. That is, in the process of projecting the tension piston 22 forward, the insertion and compression spring members 113 are compressed and deformed at different speeds according to the embedding lengths of the respective tension members, and the first wedge- The lower wedge 123 is engaged with the second wedge fitting portion 121 while the intermediate support spring member 13 is compressed and the tension member is inserted into the first binding hole 110 at a different speed, So that they are completely fixed and fixed to the lower binding plate 12. That is, in the present invention, in the state where the tension members are fixed to the lower binding plate 12 and are tightly coupled to the binding module 1 as described above, a plurality of the tension members have substantially the same burying length.

When a plurality of the tensions are equal in length, the ties are substantially uniformly stressed. In this state, a plurality of tensions are completely bound to the lower binding plate 12 and are fixed to the binding module 1 , Then it will be ready for full-scale tensioning of the tensions. Subsequently, the tensioning module 2 is used to tense the tensioning material S in order to introduce a tensioning force into the tensioning material S.

13A shows a state in which a plurality of tensile materials S are firmly coupled to the binding module 1 in the state that they have the same buried length, that is, the state shown in FIG. 12B. Of course, FIG. 13A corresponds to the cross-sectional view of FIG. 9 and 13 (b), when the fixing cylinder 21 further ascends rearward, the lower binding plate 12 of the binding module 1 is moved backward and the tension member S1 S2, and S3 are simultaneously pulled in the same stroke, a tension force of the same magnitude is introduced into the tension members S1, S2, and S3. After the fixing cylinder 21 rises to the rear with the stroke of the designed size and the tension is applied to the tension member, the fixing module 3 operates to completely fix the tension member S to the fixing plate 200. [

9, 10 and 14 show a process of fully fixing the tension member S to the fixing plate 200 by operating the fixing module 3, respectively. FIGS. 9 and 14 (a) S2 and S3 are simultaneously stretched to the same size stroke while the same tensile force is introduced into the strains S1, S2 and S3 as shown in Fig. 10 (b) 14 (b) shows a state in which the fixing module 3 operates and the tension member S is completely fixed to the fixing plate 200. The fixing piston 32 is moved forward so that the fixing piston 32 pushes the fixing wedge 201 and the fixing wedge 201 is fixed to the fixing plate 200 Insert it deep into the wedge fitting. Specifically, when the fluid or gas is injected through the pressure injecting part 33 formed in the fixing cylinder 31, the fixing piston 32 advances forward. The fixing plate 200 is disposed on the fixing surface of the concrete structure 300. In a state where the fixing wedge 201 is positioned in the fixing wedge fitting portion of the fixing plate 200 while surrounding each tension member S, As described above, the fixing piston 32 advances forward, touches the fixing wedge 201, advances forward, and pushes the fixing wedge 201 further toward the fixing wedge fitting portion. The fixing wedge 201 surrounding each tension member S is firmly fitted and fixed in the fixing wedge fitting portion while the tension member S is watered and the tension member S is completely fixed and fixed in the fixing plate 200 . After a plurality of tension members S pulled by the uniform tension device 100 of the present invention and introduced with a tension force are fixed to the fixing plate 200 by the above operation of the fixing module 3, 100).

As discussed above, in the present invention, when the equal strain device 100 is coupled to the tension member S to tense the tension member, even though each of the plurality of tension members disposed within the concrete structure 300 has different burying lengths The tension members are tied to the lower binding plate 12 of the binding module 1 while being pulled so that the respective tension members have the same embedding length in the process of binding the tension members to the binding module 1. [ That is, even though each of the plurality of tension members disposed in the concrete structure 300 has different burying lengths, the burying module 1 is in a state of having the same burying length after the tension members are bound.

After a plurality of tensions are completely bound to the binding module 1 in such a uniform stress state, the plurality of tensions S are simultaneously pulled backward by the full operation of the tension module 2, and the same tensions are introduced into the respective tensions And a plurality of strained tension members are fixed to the fixing plate 200 by the operation of the fixing module 3.

In the present invention, the operation of advancing the fixing piston 32 forward in the fixing module 3 is performed by separately forming a pressure injection part 33 in the fixing cylinder 31 as described above, The tension piston 22 and the fixing module 3 are communicated with each other so that the fluid can flow through the tension piston 22 and the fluid can flow through the tension piston 22. [ Or gas may be injected to advance the fixing piston 32 forward.

As described above, in the present invention, not only a plurality of tension members are tensed and fixed at the same time as in the prior art, but even when each tension member has a different embedding length, in the course of complete binding with the binding module 1, The same tensile force is uniformly introduced into each of the tensile members so that a uniform tensile force acts on the plurality of tensile members. So that excessive torsional force is introduced to specific torsion members during the joint use of the structure, whereby sudden breakage can be effectively prevented in advance.

1: Coupling module
2: strain module
3: Fixing module
11: upper binding plate
12: Lower binding plate
13: intermediate support spring member
21: Tension cylinder
22: tension piston
23: Central installation ball
25: Pressure space
31: Fixing cylinder
32: Fixing piston
33:
110: first binding ball
111: first wedge member
112: upper wedge
113: insertion compression spring member
120: second binding ball
121: second wedge fitting portion
122: lower wedge
200: Fixing plate
201: Settlement wedge
300: Concrete structure

Claims (8)

A tension module (2) for tensioning a plurality of tension members at the same time, a fixing module (2) for pushing the fixing wedge to the fitting portion of the fixing plate so that the tensioned state tensions are fixed by the fixing wedge Module (3);
The binding module 1 comprises an intermediate support spring member 13 positioned between the upper binding plate 11, the lower binding plate 12 and the upper and lower binding plates 11 and 12;
The second binding hole 120 having the second wedge fitting portion 121 is formed on the lower binding plate 12 and the first binding hole 110 is formed on the upper binding plate 11, The first wedge-in member 111 and the insertion compression spring member 113 are inserted and positioned in the binding hole 110 and the lower wedge 123 is disposed on the lower face of the upper binding plate 11;
The lower wedge 123 is inserted into the second wedge fitting portion 121 while each tension member is wrapped around and the upper wedge 112 covers the respective tension members in the process of binding each tension member to the binding module 1 When the tensioning module 2 is tensed after being inserted into the first wedge-in member 111, each inserted compression spring member 113 is compressed to a different contraction amount according to the initial embedding length of each tension member, (13) are also compressed so that a plurality of tension members are made in the same stress state so that the binding module (1) and the plurality of tension members are engaged and ready for tension. .
The method according to claim 1,
When the tension module 2 is operated in tension, the inserted compression spring member 113 is compressively deformed with a relatively small amount of shrinkage in a tension member having a long embedded length in the initial arrangement state, and the short embedded length The insertion compression spring member 113 is deformed in a manner such that the insertion compression spring member 113 is compressively deformed with a relatively large contraction amount, and at the same time, the insertion compression spring member 113 is deformed by the buried length of the initial arrangement state of each tension member Wherein the plurality of tension members are compressed in different states according to the lengths of the plurality of tension members, and the plurality of tension members are made to have the same length of embedment so that they are bound to the tying module.
3. The method of claim 2,
The tension module 2 comprises a cylindrical tensioning cylinder 21 having a central mounting hole 23 formed therein and a tensioning piston 22 engaged and retracted to the tensioning cylinder 21;
Characterized in that the tensioning action of the tension module (2) is made by moving the tension cylinder (21) backwards and moving up.
The method of claim 3,
Characterized in that the binding module (1) is inserted into the central installation hole (23) of the tension cylinder (21).
A tension module (2) for tensioning a plurality of tension members at the same time, and a fusing module (3) for fixing the tension members in a tense state by a fusing wedge Use the device;
The binding module 1 comprises an intermediate support spring member 13 positioned between the upper binding plate 11 and the lower binding plate 12 and between the upper binding plate 11 and the upper binding plate 12, The second binding hole 120 having the wedge fitting portion 121 is formed on the lower binding plate 12 and the first binding hole 110 is formed on the upper binding plate 11, The first wedge-in member 111 and the insertion compression spring member 113 are inserted into the first wedge member 110 and the lower wedge 123 is disposed on the lower face of the upper binding plate 11;
The tension module 2 is operated so that the lower wedge 123 is sandwiched between the second wedge fitting portions 121 while the respective tension members are wrapped around and the respective tension members are fastened to the binding module 1, Wherein the fixing module (3) pushes the fixing wedge against the fitting portion of the fixing plate to fix the tension member in a tense state after the plurality of tension members are pulled and tensed at the same time;
In the process of binding each tension member to the binding module 1, after the upper wedge 112 is sandwiched between the first wedge-in members 111 in the state of wrapping each tension member, The compression spring member 113 is compressed to a different shrinkage amount according to the embedding length of the initial arrangement state of the respective tension members and the intermediate support spring member 13 is also compressed so that the plurality of the tension members are made to have the same embedding length, 1) and a plurality of tensions to each other, thereby making each tense material ready for tensing.
6. The method of claim 5,
When the tension modules 2 are operated in tension in the process of binding each tension member to the binding module 1, the inserted compression spring member 113 is compressed and deformed with a relatively small amount of contraction in the case of the long- In the tent material having a short embedding length in the initial placement state, the insertion compression spring member 113 is deformed in a relatively large contraction amount by the tensile deformation of each tension member, and at the same time, Wherein the plurality of tensions are compressed to different lengths according to the length of the tentative embedding in the initial placement state, so that a plurality of tensions are formed in a state of having the same length of embedding, Uniform tension method.
The method according to claim 6,
The tension module 2 comprises a cylindrical tensioning cylinder 21 having a central mounting hole 23 formed therein and a tensioning piston 22 engaged and retracted to the tensioning cylinder 21;
Wherein the tensioning piston (22) is advanced to the front so that the tensioning cylinder (21) is moved backwards to rise so that the tensioning of the tensioning module (2) progresses.
8. The method of claim 7,
The binding module 1 is inserted into the central installation hole 23 of the tension cylinder 21 so that when the tension cylinder 21 moves backward and moves upward, the binding module 1 also moves backward Of the plurality of strains.

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