KR101124514B1 - Scaffolding girder introducing prestress using a device generating tension in steel wire and prestress introducing method thereof - Google Patents

Abstract

The present invention relates to a method for introducing prestress into a temporary girder of a temporary structural structure such as a temporary retainer.

      That is, a stroke generating device is installed at both ends of the prestressed temporary girders for the temporary wall of the temporary structural body, and a fixing unit is provided on the side of the pressure regulating steel outside the stroke generating device, and at least one front of the temporary girder is provided. Install a load transfer material so that the steel wires are in contact with the load transfer material so that both ends of the steel wire are settled in the anchorage. Then, a stroke is generated by a stroke generating device so that the pressure regulating steel is pushed outward and the steel wire is extended and the stroke is moved. When fixed, the prestressing force is introduced to the steel wire, and the tension of the steel wire is transmitted to the load transfer material so that the prestress is introduced to the temporary girders.

Alternatively, when a plurality of load transfer materials are installed on the front of the temporary girder, the steel wires are installed in contact with each other to be fixed to the anchorages installed at both ends, and a stroke generating device is installed between the brace belts installed between the plurality of load transfer materials to generate a stroke. The length of the steel wire by extending the load transfer material vertically as the brace belt is pushed outwards, or by installing the fixing device on the inner and outer load transfer material, interconnecting each other with the stroke steel, or connecting the load transfer material to each other. Connected with stroke steel, settle with anchorage, and tension the steel wire at one end so that the load transfer material stands vertically, so that the steel wire installed in contact with the load transfer material is stretched, and then stop the extension of the steel wire and fix the stroke. Acts as a prestress force and the introduced tension It was to be introduced in gasiseol or girder,

Alternatively, install a prestressed temporary girders for the retaining wall on the temporary structure installed on the side of the interfacial section, install an intermediate brace between the bands installed on the side of the interfacial surface, and install a plurality of load transfer materials on the front of the temporary girder. The end is fixed to the temporary girder by both anchors while being installed in contact with the steel wire, and then the prestress is introduced into the temporary girder by the stroke generated by the stroke generating devices installed at both ends of the temporary girder. The prestress is introduced to the intermediate brace again to relieve the external force acting on the girder installed on the side of the sectional structure relates to a temporary structure to introduce the prestress to the girder by a variety of ways to introduce tension.

Description

{Scaffolding girder introducing prestress using a device generating tension in steel wire and prestress introducing method}

The present invention, when excavating the ground in order to install the main body structure, while preventing the earth and sand around the excavation of the straight portion and the cross-section portion, while at the same time installed to secure a work space for underground installation of the main body structure Supports for supporting temporary girder combined with girder installed in all the above-mentioned temporary structural structures, such as girders of structural structures, temporary bridges installed to support concrete placing loads for the installation of main structures, or girders supporting temporary bridges. In order to offset the stress caused by the external force acting on the temporary girder in order to widen the interval of the present invention, the prestressing force is applied by extending the steel wire installed on the temporary girder so that the prestress is applied.

Or, if the temporary wall is difficult to install the brace to the edge, it is possible to introduce a pre-stress to the temporary girder to maximize the distance of the brace as possible, while installing the intermediate brace between the temporary girder and the temporary wall of the edge It is about.

Conventionally, when installing a temporary soil membrane, copper bar, or existing bridge, there is a problem that deflection and excessive stress occurs when the earth pressure, self-weight and traffic load act on the girder due to insufficient rigidity of the girder. The steel wire is installed on the front of the girder to introduce tension to the steel wire so that prestress is introduced to the girder. The tension introduction method is to settle after tensioning from the cable end to the hydraulic jack, or to settle the end of the brace in the middle of the girder. There is a method of introducing tension by inserting jacks at the point where the cable is mounted on the cable, but there are problems such as the increase of tension fixing device, the increase in the number of intermediate vertical members, the increase in the number of jack insertion and removal, and the increase of air. This has existed.

      In addition, when the girders are installed in the excavated portion of the cross section, the cross section is large, and as it is installed at each cross section, the spacing is narrow, resulting in overuse of steel materials and excessive interference of the body structure, resulting in poor workability. Difficult drawbacks have existed.

The present invention is a technique proposed to improve the problems posed as above.

The present invention extends the steel wire by various methods of introducing prestress to the temporary girder girders having the acupressure supporting steel plate 33 at both ends, and then fixed to a predetermined position to generate tension, the generated tension is prestressed force to the temporary girder The present invention relates to a method of introducing prestress into a girder girder which is introduced in an eccentric moment so as to counteract and recover from mutual stress and deformation of an external force acting on the temporary structure.

The present invention is to generate a stroke in the cylinder by using the hydraulic jack of the stroke generating device provided separately at both ends of the temporary girder of the temporary structural structure, such as temporary sack, push the pressure regulating steel to the outside by the generated stroke, the pressure regulating steel While extending the steel wire installed across the anchorage and the load transfer material installed on the front of the temporary girder, the stroke is operated by the design value, and when the jack is released by fixing, the prestress of tension is applied to the steel wire. A mechanism for converting the force into force and applying a compressive force and an eccentric moment to the temporary girder by the prestress force to cancel the stress caused by the external force;

As described above, a brace belt is installed between the load-carrying member and a stroke generating device in the center of the brace belt, and a hydraulic jack is inserted into the stroke generating device. When the stroke is generated, the load transfer material is erected in the vertical direction, and the steel wire is stretched so that the tension force of the generated steel wire acts as a prestress force.

Alternatively, a fixed fixture is installed on an external load transfer member installed on the front side of the temporary girder, a stroke fixture is installed at a predetermined distance away from the front surface of the cut girder, and a stroke steel wire is connected between the fixed fixture and the stroke fixture. When the tension is fixed and the end of the stroke steel wire fixed to the stroke anchoring hole, the inclined load transfer material is erected and the steel wire is extended so that the tension force of the steel wire generated is acted as a prestress force.

Alternatively, the load transfer member is connected to each other by a stroke steel wire at an upper end portion of the load transfer material, and the stroke anchoring hole installed in the middle of the stroke steel wire is tightened, and when the stroke steel wire is pulled, the steel wire is stretched while the inclined load transfer material is raised. Prestressing force and eccentric moment are introduced into the temporary girder to counteract and recover the external force by counteracting the external stresses and deformations. It prevents the extension of construction period caused by the delay due to the interference and the deterioration of the function of the main body structure, and at the same time shortens the construction period, so that it is possible to install the temporary structural structures such as the economical and efficient temporary wall.

Introducing prestress to the temporary girder as described above can reduce the number of installation of the girders, vertical members and braces, there is an advantage to secure a wider working space.

The present invention is to introduce a pre-stress by using a hydraulic jack to the temporary girder of the temporary structural structure, such as the temporary construction mud wall installed on the straight portion and the end surface, or by introducing a tension to the steel wire installed in the load transfer material while the load transfer material standing vertically The prestress is introduced to the temporary girder to reduce the number of vertical piles, strips and braces, thereby reducing the steel usage and ensuring more work space. The cost of construction will be reduced.

Hereinafter, the configuration and operation of the present invention will be described in detail by the accompanying drawings.

Figure 1 is installed on both sides of the prestressed girders for earthenware of the present invention and installed on the outside of the pressure regulating steel on the outside of the anchoring device and the load transfer material on the front of the girder girders installed on both sides of the anchorage When the steel wire is installed in contact with the load transfer material and pushed to the jack of the stroke generating device, the steel wire is elongated, and the drawing shows the installation of a temporary structure such as a temporary scaffold such that prestress is introduced into the temporary girder by the reaction force. 3 is a view showing a state in which the stroke generating device and the steel wire of the present invention is connected by the anchorage, Figure 3 (a) (b) is a view showing a coupling relationship of the projecting steel pipe and the protruding channel and the bolt nut of the stroke generating device of the present invention 4 (a) is a view showing in detail the wire guide device of the present invention, Figure 4 (b) is a steel of the present invention Figure 5 is a view showing another embodiment of the guide device, Figure 5 is a view showing a double girder prestress facility girder of the present invention, Figure 6 is a pre-stressed girder prestress facility girders of the present invention As a method of introduction, anchorages are provided at both ends of the prestressed girders for earthen blocks, a brace is installed between a plurality of load transfer members provided on the front of the girder, and a stroke generating device is installed at the center of the braces. When the steel wire is fixed to the anchorages on both sides while the steel wire is in contact with the load transmitting material, and the stroke is generated in the stroke generating device so that the load transmitting material is erected vertically, the steel wire is elongated to convert the steel wire into prestressing force. Such as temporary fences which let prestress be introduced to temporary girder Figure 7 is a view showing the installation of a temporary structure, Figure 7 is another method for introducing a prestress to the prestress temporary girder for the mud wall of the present invention, by installing anchors at both ends of the prestress temporary girder for the mud, Install a plurality of load transfer members on the front, install steel wires at the anchorages and load transfer ends at both ends, install fixed anchorages at the outermost load transfer material, and install the stroke anchors at the bottom of the girders. And tension the ends of the steel wire settled in the stroke anchorage so that the load transfer material is erected vertically so that the steel wire is stretched, and the stretching force of the generated steel wire is converted to prestressing force so that the prestress is introduced into the temporary girder. Figure showing the installation of the temporary structure, Figure 8 is As another method of introducing the prestress to the prefabricated girders of the name of the prestress, the anchorages are provided at both ends of the prestressed girders for the retaining wall, and a plurality of load transfer materials are installed in front of the temporary girders. The steel wire is installed at the end of the load transfer member, the steel wire is connected while the stroke anchoring hole is installed at the load transfer member, and the end of the steel wire settled at the stroke fixing hole installed at the one side is tensioned so that the load transfer member is erected vertically. FIG. 9 (a) (b) shows that a temporary structure is installed so that the steel wire is stretched, and the stretching force generated in the steel wire is converted into a prestress force so that the prestress is introduced into the temporary girder. Install the fixing brackets on both sides of the girders on both sides and open the wire And, it is installed in contact with the fixing bracket, showing the introduction of the prestress by installing a hydraulic jack in the center of the brace strip installed in contact with the flange of the facility girder prestress, when the external force is large, the flange with a tie-elastic clip Figure 10 is a view showing the close contact, Figure 10 is installed between the girdle and the earth prestressed girders installed on the edge of the girder, and install the stroke generating device at both ends of the girder girders outside the outside Install a pressure regulating device, install a plurality of load transfer materials on the front of the temporary girder, and install the steel wire in contact with the end, fix the steel wire to the fixing device installed in the pressure regulating device, and then generate a stroke in the stroke generating device. After the wire is stretched and fixed, the stretching force The prestressing force transferred to the temporary girder is transferred to the temporary girder, and the prestressing force transmitted to the intermediate brace is installed so that the sectional side temporary facility structure, which is the side sectional temporary facility soil wall, is made to resist and offset the external pressure generated at the side sectional area. Figure 11 is a prestress for the earth retainer is installed between the girder and the general girdle to secure a wider gap, while connecting the brace and the girder installed on both ends of the girdle to install the brace and the temporary connection Figure 12 is a view showing one, and Figure 12 is a view showing the support for the retaining prestressed with a girdle between the girders, Figure 13 is a support for the retaining prestressed girders on each side of the girder The brace is buckled by installing an intermediate file between the braces FIG. 14 is a view showing that the phenomenon is prevented, and FIG. 14 is a view showing that a collision protection measure for protecting a temporary structure is installed outside the facility girder prestress such as FIG. 1, and FIG. 15 (a) (b) is a load transfer material installed on the flange of the front girder prestressed girders as shown in Figs. 6, 7 and 8 in order to prevent the generation of moment while the load transfer material is vertically erected by the stroke generating device. Figure showing the sliding bolt coupling from the side and plane.

      The present invention relates to a method of introducing prestress using a variety of methods to the temporary girder provided with acupressure supporting steel plate 33 at both ends, such as girders of temporary reinforcement mud wall installed in the ground or the girder of the temporary bridge. It relates to a temporary construction structure installed.

As described above, the present invention is a straight line or sectional surface installed on the excavation ground to secure working space, while preventing the collapse of the surrounding soil when excavating the ground in a straight line or sectional surface to install the structure in the ground The present invention relates to the provision of various methods for introducing pre-stress to the temporary girder applied to the temporary structural structure 10, such as temporary bridges or temporary bridges for temporary use.

Hereinafter, the present invention will be described in detail with reference to the drawings.

A girder 11 is installed on the side flange surface of a plurality of vertical piles (not shown) at regular intervals, and a sliding chamber 22 is placed at the center of the girders 11 provided on both sides, and acupressure supporting steel sheets at both ends. Install the prestress temporary girder (20) for the mudstone (33).

The pressure prestressing steel (25) connected to the stroke generating device (30) is installed at both ends of the girder prestressed girder (20) installed in the center.

On the side of the pressure-controlled steel 25 to install a sliding space portion 22 that can move in a certain range to come in contact with the girder, on the side of the girder 11 and the brace 12 of the pressure-controlled steel ( 12) and the bolt nut to be supported, and the fixing unit 23 is installed in the abdomen which is the side surface of the pressure regulating steel 25.

The stroke generating device 30 is installed between the pressure regulating steel 25 and the prestressed girders 20 for the earth retainer.

At least a plurality of load transfer members 24 are installed on the lower flange 14, which is the front surface of the prestress temporary girders 20, and the center of gravity shaft 26 of each of the installed load transfer members 24 is provided. The wire guide device 40 is disposed so as to face the center line 27 of the wire linear, and the wire guide device 40 is installed at the end of the load transfer member 24 so that the wire can be contacted flexibly. The temporary structural structure 10 in which the steel wire 13 provided through the inside is fixed to the fixing fixture 23 provided in both sides is installed like FIG.

The sliding space 22 is fixed to the brace 12 after setting a predetermined movable range, when the cylinder of the hydraulic jack 32 of the stroke generating device 30 generates a stroke, the pressure regulating steel 25 Is pushed to the outer sliding space portion, which is to limit the moving range so that the pressure-controlled steel 25 is pushed in the movable range that is pushed.

The range of movement is to be limited in accordance with the amount of pre-stress introduced into the temporary girder 20 at the time of design.

2 is a view showing the stroke generating device 30 in detail.

      The stroke generating device 30 is attached to the pressure-bearing steel plate 25 and the pressure-bearing steel plate 33 at the ends of the prestress temporary girders 20 for the retaining wall, respectively, and the pressure-bearing steel plate 33 on both sides The hydraulic jack 32 is provided in the center between the above, and the protruding steel pipe or channel 31 is welded to the acupressure supporting steel plate 33 provided at the end of the pressure regulating steel 25 above and below the hydraulic jack 32, and The bolt 34 is attached to the protruding steel pipe or channel 31, and the bolt 34 is bolted to a long nut 35 installed at an end of the prestressing girder 20. The prestress is fastened with a nut 39 at the end of the bolt 34 protruding through the pressure bearing steel plate 33 provided at the end of the facility girder 20.

Referring to the method of introducing the prestress to the temporary girder 20 of the temporary structure 10 of Figure 1 and 2 installed as described above, as follows.

First, a stroke is generated in the cylinder of the hydraulic jack 32 of the stroke generating device 30.

The prestressing force P is generated in the temporary girder 20 while the pressure regulating steel 25 is pushed toward the sliding space 22 by the generated stroke.

        When pushed as described above, the steel wire 13 is pushed outward while the steel wire 13 fixed to the anchorage 23 attached to the side of the pressure regulating steel 25 is pushed outward, and the stroke is applied as much as the design management value, Fixing the (35) and the nut (39) causes the external force offset reaction force (PV) that pushes the load transfer member 24 upward while generating an extension force that causes the wire to be stretched to a prestress force (P). Prestressed at 20.

A load measuring sensor 46 may be installed in the stroke generating device 30.

Since the centroid 26 of the load transfer member 24 is installed to the virtual centroid 27, the wire is minimized friction force with the wire guide device 40 so that the prestress force is equal to the length of the entire wire. P) is introduced.

The installation example different from the stroke generating apparatus 30 of FIG. 2 is FIG.3 (a) (b).

The stroke generating device 30 of FIG. (A) attaches the pressure bearing steel plates 33 to the ends of the pressure regulating steel 25 and the prestress temporary girder 20 for the retaining wall, respectively. A hydraulic jack 32 is provided at the center between the valve 33, a load measuring sensor 46 is installed around the hydraulic jack, and at the end of the pressure regulating steel 25 above and below the hydraulic jack 32. The steel pipe 31 is welded to the provided acupressure supporting steel plate 33, the bolt 34 is welded to the steel pipe 31, the stroke is moved by a design control value, and then a long bow nut (to the bolt 34) is attached. While fastening 35), the prestress for earth retaining is fastened with a nut 39 to the end of the bolt 34 protruding from the pressure bearing steel plate 33 installed at the end of the facility girder 20.

The stroke generating device 30 of FIG. (B) attaches the pressure bearing steel plates 33 to the ends of the pressure regulating steel 25 and the prestressed girder 20 for the retaining wall, respectively. A hydraulic jack 32 is provided in the center between the valve 33, a load measuring sensor 46 is installed around the hydraulic jack, and the upper and lower portions of the hydraulic jack 32 are disposed at the ends of the pressure regulating steel 25. The channel 47 is welded to the provided acupressure supporting steel plate 33, the bolt 34 is welded to the channel 47, the stroke is moved by a design management value, and then the bow 34 nut ( While fastening 35), the prestress for earth retaining is fastened with a nut 39 to the end of the bolt 34 protruding from the pressure bearing steel plate 33 installed at the end of the facility girder 20.

Next, Figure 4 (a) shows the wire guide device 40 installed in the end of the load transfer member 24 in detail.

The wire guide device 40 is provided with a base steel plate 28 and a reinforcement plate at the end of the load transfer member 24, the guide plate 41 on both sides of the load transfer member 24 including the base steel plate Install, and attach to the base steel plate 28 between the guide plate 41, the curved saddle 42 having a convex curved surface is in contact with the steel wire, the steel wire on the curved surface of the curved bird 42 While installing the contact wire through the upper portion of the guide plate 41 installed on both sides to prevent the separation of the steel wire installed by installing the steel wire escape prevention rod 45.

While the center of gravity axis 26 of the load transfer material 24 is installed to face the circular center of gravity 27 in which the steel wire is disposed, the portion where the steel wire 13 is in contact with the curved saddle 42 is the central axis ( 26) and a right angle (R) in the tangential direction (T) of the steel wire 13 to form a flexible arc shape when the steel wire is installed in the load transfer member 24 to prevent the loss of prestress force (P) due to steel wire friction. It is to minimize and to distribute evenly over the length of the wire.

When the steel wire 13 is installed by the above-described method, the steel wire 13 is installed in the first floor, and FIG. 4B is applied to the case in which a plurality of steel wires are installed in the second floor.

A guide plate provided with a base steel plate 28 and a reinforcing plate 15 supporting the base steel plate 28 at the end of the load transfer member 24 and including the base steel plate 28 and a pipe pin portion 44 installed up and down inside the base plate 28. 41) on both sides.

     It is installed up and down so that the groove formed in the side of the steel pipe birds 43 is inserted into the pipe pin 44 provided in the guide plate 41.

Steel wires 13 are installed in contact with the steel pipe birds 43, respectively.

After the steel wire 13 is installed in contact with the steel pipe birds 43 up and down, by installing a steel wire escape prevention bar 45 on the upper portion of the guide plate 41 to prevent the steel wire 13 from being separated.

In order to minimize the friction when the steel wire is stretched by allowing the steel pipe birds to rotate about the pipe pin.

5 is a prestressed girder 20 for the mud wall using the prestressed temporary double girder 50 connected in the case of a stiffness of the stress load against the external force when the insulation girder as a heat insulation; Figure shows the application to).

At this time, the load transfer material 24 is to be supported by the installation of a plurality of lines in a line interconnected to the temporary girder.

Figure 6 shows one example as a method of introducing the prestress by extending the steel wire to the prestress for facility girder 20 of the present invention.

The steel wire fixing steel (17) provided with anchors (23) are installed at both ends of the prestress temporary girder (20) for the earth retaining, and the brace (12) and the bolt nut coupling (38) on the side of the steel wire fixing steel (17). To support it,

      A plurality of load transfer members 24 and steel wires are installed on the front surface of the prestress temporary girder 20 for the earth retainer, and a brace belt 71 is installed between the load transfer members 24, and the brace belt ( When the hydraulic jack 32, which is the stroke generating device 30, is installed in the center of the 71, and the stroke is generated in the hydraulic jack 32, the load transfer member 24 in which the sliding bolt is coupled to the flange 14 is formed. When the load is pushed outwards, the load transfer member 24 is erected in the vertical direction. As a result, the steel wire 13 rises upward to the load transfer member, and the steel wire is stretched and the stroke is stretched by the design management value. The extension force of the steel wire is converted into prestress force (P), and the force is introduced into the temporary girder 20 as the prestress while the external force offset reaction force (PV) is transmitted through the load transfer material.

Another method is to introduce the prestress by stretching the steel wire by tensioning by connecting the stroke steel wire 74 to the load transfer material and the steel wire fixed steel 17 as shown in FIG.

The steel wire fixing steel (17) provided with anchors (23) are installed at both ends of the prestress temporary girder (20) for earth retaining, and the brace (12) and bolt nuts are coupled to the side of the steel wire fixing steel (17). 38) to support it,

    A plurality of load transfer members 24 and steel wires are installed on the front surface of the prestress temporary girders 20 for the earth retaining wall, and fixed fixing holes 75 are installed on the load transfer members 24 installed on the outermost side. After the stroke fixing holes 76 are installed on the flanges 14 of the fixed steel 17, the steel wires 74 are connected to each other and fixed to the fixing holes 75 and 76, respectively.

    When the steel wire 74 connected to the stroke fixing hole 76 is tensioned and fixed, the load transfer material 24 sliding 73 coupled to the flange 14 is pushed outward and the load transfer material 24 is vertical. To be built.

    When it is erected vertically as described above, the steel wire 13 eventually stretches upwards on the load transfer member 24, and the steel wire is stretched, and the stroke is applied to extend as much as the management value, and then fixed. The prestressing force (P) is converted, and the force is introduced into the temporary girder 20 as the prestressing force (PV) is transmitted through the load transfer material.

Another method is as shown in FIG.

The steel wire fixing steel (17) provided with anchors (23) are installed at both ends of the prestress temporary girder (20) for earth retaining, and the brace (12) and bolt nuts are coupled to the side of the steel wire fixing steel (17). 38) to support it,

      A plurality of load transfer members 24 and steel wires are provided on the front surface of the prestress temporary girders 20 for the retaining wall, and stroke fixing holes 76 are installed in the middle of the load transfer members 24, and the strokes on both sides are provided. The steel wire 13 is connected to and fixed to the fixing unit 76.

      When the steel wire 13 connected to the stroke fixing hole 76 is tensioned and fixed, the load transfer material 24 sliding to the flange 14 is pushed outwards, and the load transfer material 24 is vertically erected.

      When the steel wire 13 is erected vertically as described above, the steel wire 13 eventually extends upward to the load transfer member, and the steel wire is stretched, and a stroke is applied to extend the design management value, and then fixed, and the extension force of the steel wire is prestressed. P), the force is introduced into the girder 20 prestressed by the external force offset reaction (PV) is transmitted through the load transfer material.

      The installation method of the load transfer material 24 is to be installed as described above.

As another method, as shown in FIG. 9 (a), the fixing brackets 29 having fixing fixtures installed on the sides of the prestress temporary girder 20 for earthenware are installed on both sides, and the steel wires 13 are connected to each other. 29) is installed in contact with, but the prestress for the retaining wall is installed in contact with the flange of the girder 20, the hydraulic jack 32 is installed in the center of the hydraulic jack 32 to generate a stroke in the hydraulic jack to fix the brace on both sides When pushed toward the bracket, the fixing bracket is pushed and the wire connected to the fixing bracket is pushed to the side at the same time so that the steel wire is stretched, and when the stroke is stopped and fixed, the extension force introduced into the steel wire is converted into an external force offset reaction force to introduce the prestress. will be.

In addition, when the prestress acts as described above, the girder 11 is deformed downward by the external force, and the brace belt 71 is bent upward by the prestress, and thus the girder 11 and the brace belt 71 are eventually bent. ) Are closely bonded to each other to form a composite cross-section combined to increase the cross-sectional stiffness significantly.

When the external force is large when synthesized as described above, omega at the portion where the flange 14 of the girder 11 and the flange 14 of the brace long 71 are in contact with each other with a rigid elastic clip 78 as shown in (b). A flange 14 that is in close contact with the tightly coupled portion 79 of the shape of the elastic elastic clip 78, penetrates through the elastic clip 80 connected to the tightly coupled portion 79, and is coupled and fastened to the bolt nut 38. ) Is coupled to the gap using the friction force of the elastic elastic clip (78).

Another method for installing the provisional structure 10 of the present invention is to apply to the side of the excavation cross section as shown in FIG.

 A plurality of vertical piles (16) are installed along the excavation surface including the side faces, and the girder (11) is installed in contact with the vertical piles and simultaneously installs the retaining wall.

      The prestressing girders 20 for the retaining wall is installed on the end surface of the starting point of the end face, and the pressure regulating steel 25 is connected to both sides thereof.

The side of the girder 11 and the pressure-controlled steel 25 and the brace while installing a sliding space 22 to move in a predetermined range on the side of the pressure-controlled steel 25 to contact with the girder 11 The side of the 12 is supported by the bolt nut coupling 38, and the fixing unit 23 is installed in the abdomen which is the side of the pressure regulating steel 25.

The stroke generating device 30 is installed between the pressure regulating steel 25 and the prestressed girders 20 for the earth retainer.

The strip extension 49 on both sides of the side end face is attached to the side of the pressure regulating steel 25.

A plurality of intermediate braces 61 are installed and supported between the girder 11 and the soil barrier pre-stressed girders 20 on the edges.

At least a plurality of load transfer members 24 are installed on the lower flange 14, which is the front surface of the prestress temporary girders 20, and the center of gravity shaft 26 of each of the installed load transfer members 24 is provided. Arranged so as to be circular so as to gather in a circular center of gravity 27 of the steel wire arrangement shape, and install the wire guide device 40 so that the steel wire can be installed in contact with the end of the load transfer member 24 flexibly Fixing the steel wire 13 installed through the steel wire guide device to the fixing unit 23 provided on both sides.

     10 is provided with a side cross-section provision structure structure 60 in which the collision protection measures 48 of FIG. 14 are installed between the braces 12 provided on both sides away from the end of the load transfer member 24 by a predetermined distance.

The sliding space 22 is fixed to the brace 12 after setting a predetermined movable range, when the cylinder of the hydraulic jack 32 of the stroke generating device 30 generates a stroke, the pressure regulating steel 25 Is pushed to the outer sliding space portion 22, the steel wire 13 is extended upward, the stroke is applied as much as the design management value, and then fixed, the stretch force that the steel wire is stretched to switch the prestress force (P) At the same time, an external force offset force (PV), which is a force that pushes up the load transfer material, is generated and transmitted to the temporary girder 20 as a prestress, and the transmitted force is evenly transmitted back to the intermediate brace 61 so that the external force of the side face is increased. To offset.

11 is to install the brace and the temporary girder connecting portion 100 in order to enlarge the distance between the temporary girder 20.

      While installing the girders 11 between the prestressed girders 20 on both sides of the retaining wall and bolt nut coupling 38, and installing the acupressure reinforcement 101 on the flanges 14 on both sides of the bolt nut coupling. Install the brace 12 in the center.

      Install the inclined brace 103 on the acupressure reinforcement 101 of the both sides to install the reinforcement portion 21 in the portion interconnected with the brace in the center, install the screw jack 102 on the outside of the reinforcement portion and the screw jack On the outside of the brace 21 is installed.

12 is a brace and a temporary girder connecting portion 100 to support the temporary girder 20 installed on both sides with a single brace 12 at regular intervals.

Install the acupressure reinforcement 101 connecting the flanges of the prestressed girders 20 for the earth retaining wall installed on both sides of the gap, and install the brace 12 in the center of the side of the acupressure reinforcement 101, and then successively screw jack (21) is installed, and the brace 12 is connected to the outside of the screw jack.

FIG. 13 is for preventing the brace from buckling when the brace 12 is long.

Both ends of the prestressed girders (20) installed at regular intervals are connected to each of the braces 12, respectively, and the intermediate pile (77) is installed between the braces 12 connected to each other installed on both sides It is to support while preventing the buckling of the brace (12).

FIG. 14 is installed outside the temporary girder 20 of FIGS. 1, 5, 6, 7, 8, and 9 to prevent damage or damage to the temporary structural body 10 from heavy equipment. will be.

      Prestress for the earth is installed using an angle in a grid up and down between the brace 12 for supporting the facility girder 20.

     Collision protection measures reinforced by installing a vertical angle 54 between the brace 12 and the brace 12 up and down, and installing a horizontal angle 55 at a portion where the brace 12 and the vertical angle 54 meet each other. (48).

15 (a) and (b) show a load transfer member 24 when the load transfer member 24 is installed on the front of the temporary girder 20 so that the load transfer member 24 is vertically set up by the stroke generating device 30. ) And to prevent the moment is generated while the activity between the flange (14) smoothly.

(A) is a side view, (b) is a top view, in which the stainless plate 53 is provided in the lower part of the flange 14, and then the reinforcement board 15 is installed, and then a load transmitting material (24) is installed, but the long hole 51 is formed in the flange 14, the stainless plate 53 and the reinforcing plate 15 so as to penetrate each other, and the washer 52 in the upper and lower parts of the outside of the long hole 51 The hinge bolt coupling (73) is provided so that the bolt nut coupling (38) passes through the washer (52) and the long hole (51).

When the load transfer member 24 is moved vertically by the stroke generating device 30, the stainless plate 53 minimizes friction to facilitate movement, and the long hole 51 has the load transfer member 24 vertically. When moving, it is to prevent the generation of moment by allowing the bolt nut to move within the range of the long hole (51).

The installation position of the anchorage for fixing the steel wire is to match the center of the belt or girders to prevent the occurrence of eccentric moment.

Figure 1 is installed on both sides of the prestressed girders for earthenware according to the present invention installed on the outside of the girder installed on the outside of the girder girder installed in the pressure flow steel and the load transfer material on the front of the girder Drawing showing the installation of a temporary structure such as a temporary scaffolding so that when the steel wire is installed in contact with the load transfer material and pushed to the jack of the stroke generating device and the steel wire is extended so that prestress is introduced into the temporary girder by the reaction force.

2 is a view showing a state in which the stroke generating device and the steel wire of the present invention is connected by a fixing unit.

Figure 3 (a) (b) is a view showing a relationship in which the bolt nut is coupled to the steel pipe and the channel of the stroke generating device of the present invention, respectively.

Figure 4 (a) is a view showing in detail the wire guide device of the present invention.

Figure 4 (b) is a view showing another embodiment of the wire guide device of the present invention.

Figure 5 is a view showing the installation of a double girder prestress girder for the present invention.

6 is a method for introducing prestress into the prestress temporary girder for the mud wall of the present invention, the fixing unit is installed on both ends of the prestress temporary girder for the mud, the brace between the plurality of load transfer material installed on the front of the temporary girder And a stroke generating device in the center of the brace, the steel wire is installed in contact with the load transmitting material, the steel wire is fixed in the fixing holes on both sides, and the stroke is generated in the stroke generating device so that the load transmitting material is erected vertically. When the steel wire is extended and the steel wire is converted into prestressing force to install the temporary structural structure such as a temporary earthquake barrier to allow the prestress to be introduced into the temporary girder.

Figure 7 is another method for introducing prestress to the prestress temporary girders for the mudguard of the present invention, the fixing unit is installed on both ends of the prestress temporary girders for the mudguard, a plurality of load transfer material is installed on the front of the temporary girder Steel wires are installed at both ends of the anchorage and the load transfer member, fixed anchoring holes are installed at the outermost load transfer member, and steel wires are connected to the bottom of the girder while the stroke anchoring holes are installed. A diagram showing the installation of a provisional structure in which the end of the steel wire is tensioned so that the load transfer material is erected vertically so that the steel wire is stretched, and the stretched force of the generated steel wire is converted into a prestressing force so that the prestress is introduced into the temporary girder.

8 is another method for introducing the prestress to the prestress temporary girder for the mud wall of the present invention, the fixing unit is installed on both ends of the prestress temporary girder for the mud, a plurality of load transfer material is installed on the front of the temporary girder. Steel wires are provided at both ends of the anchorage and load transfer member, and the steel wires are connected while the stroke anchoring hole is installed at the load transfer member, and the ends of the steel wire fixed at the stroke anchoring hole installed at the one side are tensioned to transfer the load. A drawing showing the installation of a provisional structure in which the steel is stretched vertically so that the ash is erected, and the stretching force generated in the steel is converted to the prestressing force so that the prestress is introduced into the temporary girder.

Figure 9 (a) (b) is installed on both sides of the fixing bracket is installed on the side of the prestressed girder for the earth retaining girder connected to the wire, and installed in contact with the fixing bracket, the prestressed girder for the earthen It shows the introduction of prestress by installing the hydraulic jack in the center of the support belt installed in contact with the flange of the drawing.

Figure 10 is installed between the girder and prestressed girders installed on the side of the girder, the stroke generating device is installed on both ends of the girder girders and a pressure flow device is installed on the outside of the girder The steel wire is fixed to the anchorage installed in the pressure flow device while the steel wire is installed in contact with the end while installing a plurality of load transfer materials on the front surface, and then the stroke is generated by the stroke generating device to stretch the steel wire, and then fix the steel wire. The prestressing force is converted into prestressing force and is transferred to the temporary girder, and the prestressing force transmitted to the temporary girder is transferred to the intermediate brace to install and install the side sectional facility structure, which is the side sectional temporary facility soil wall, which resists and offsets the external pressure generated from the side of the temporary girder. Showing drawings.

11 is a view showing the installation of a brace and a provisional connection by interconnecting the brace and the girder installed on both ends of the girdle while securing a wider gap by installing a common band between the girder prestress is the facility girder.

FIG. 12 is a view showing that the prestress for the retainer is supported by one brace between the facility girders; FIG.

Figure 13 shows that the prestress for the earth support each side as a brace on the side of the facility girder, by installing an intermediate pile between the brace to prevent the brace from buckling.

FIG. 14 is a view illustrating a collision protection system for protecting a temporary structure from an outer side of a facility girder prestress such as FIG. 1;

Figure 15 (a) (b) is a load transfer material installed in the flange on the front of the earth prestressed girders such as Figures 6, 7, and 8 when the load transfer material is vertically erected by the stroke generating device acts as a moment To show the sliding bolt coupling in side and plane to prevent the occurrence.

  Description of the main parts of the drawing

   N.A; Neutral axis

   P; Girder prestressing force P '; Prestressing force of steel wire

   PV; External force offset reaction PS; Stroke action direction of stroke steel

   T; Tangential direction R; right angle

   10; Temporary structure 11; Girder

   12; Brace 13; Liner

   14; Flange 15; Gusset

   16; Vertical pile 17; Steel wire fixed steel

   18; Sheath

   20; Prestressed girders 21; Reinforcement

   22; Sliding space part

   23; Anchorage 24; Load transfer material

   25; Pressure regulating steel 26; Central axis

   27; Centroid 28; Base steel

   29; Fixing Bracket

   30; Stroke generator 31; Steel pipe

   32; Hydraulic jack 33; Acupressure Supporting Steel Sheet

   34; Bolt 35; Long Butterfly Nut

   36; Thread 37; welding

   38; Bolt nut coupling 39; nut

   40; Steel wire guide device 41; Guide plate

   42; Curved saddles 43; Steel pipe birds

   44; Pipe pin 45; Steel wire escape prevention rod

   46; Load measuring sensor 47; channel

   48; Collision protection measures 49; Sash extension

   50; Prestressed Furniture Double Belt

   51; Long 52; Washa

   53; Stainless plate 54; Vertical angle

   55; Horizontal angle

   60; Side sectional structure 61; Middle brace

   62; Back

   71; Brace 73; Sliding Bolt

   74; Stroke steel 75; Fixing Fixture

   76; Stroke fitting 77; Intermediate file

   78; Titanium clip 79; Contact

   80; Elastic Clip

   100; Brace and temporary girder connection 101; Shiatsu reinforcement

   102; Screw jack 103; Inclined brace

Claims (37)

Pre-stressed temporary girders 20 for earth retaining, which is provided with acupressure supporting steel plate 33 at both ends, and the stroke generating device 30 provided between the prestressed temporary girder 20 for earthing and the pressure regulating steel 25 And, the brace connecting the sliding space portion 22 provided between the pressure regulating steel 25 and the girder 11, one side of the girder 11, and one side of the pressure regulating steel 25 ( 12), the fixing fixture 23 provided in the abdomen which is the side of the pressure regulating steel 25, and the sliding bolt coupling 73 to the lower flange (14) of the prestressed temporary girders 20 for the earth retaining plural number or more The wire transfer device 24 is connected to the load transfer member 24 installed, the wire guide device 40 installed at the end of the load transfer member 24 so that the steel wire is installed as a parabola, and the fixing holes 23 at both sides thereof. While exerting force on the steel wire characterized by mounting the steel wire on the wire guide device 40 Temporary girder which adopts prestress including apparatus to make. Prestressed temporary girders 20 for earth retaining, which is provided with acupressure supporting steel plate 33 at both ends, and the steel wire fixed steel 17 is connected to both ends of the prestressed temporary girder 20 for earthing; Brace 12 connected to the side of the steel wire fixed steel 17, the anchorage 23 is installed on the abdomen that is the side of the steel wire fixed steel 17, and the front flange of the prestress temporary girder 20 for the mud 14, a hydraulic bolt (32) is provided between the load transfer member (24) provided with a plurality of sliding bolts (73) installed between the load transfer member (24) and the support belt (71) installed between the installed load transfer member (24) and the support belt (71). ) Is installed in the stroke generating device 30, the wire guide device 40 is installed so that the steel wire is installed in a flexible parabola at the end of the load transfer material 24, the steel wire 13 to the fixing holes 23 on both sides (2) Fixture zone mounted steel wire to wire guide device (40) while connecting A gasiseol girder introducing a prestress, including apparatus for generating a stretching force to the liner is characterized in that the body (10). Prestressed girder girders for earthquakes with acupressure bearing steel plates 33 at both ends (20), the steel wire fixed steel (17) connected to each side end portion of the prestress for masonry girders 20, and the brace 12 connected to the side of the steel wire fixed steel (17), and Load transfer member (24) provided with a plurality of fixing bolts (73) installed in the abdomen, which is the side of the steel wire fixed steel (17), and a plurality of sliding bolts (73) to the front flange (14) of the prestressing girders (20) ), A fixed fixture 75 provided in the outermost load transfer member 24, a stroke anchor 76 provided in the flange 14 of the temporary girder 20, and each of the anchors 75, At the end of the load transfer member 24, the wire guide device 40 installed at the end of the load transfer member 24, and the fixing wire 23 at both sides thereof. While connecting the steel wire 13 is characterized in that the steel wire is mounted on the wire guide device 40 Temporary girder with prestressing including a device that generates elongation force on steel wire. Prestressed temporary girders 20 for earth retaining, which is provided with acupressure supporting steel plate 33 at both ends, and the steel wire fixed steel 17 is connected to both ends of the prestressed temporary girder 20 for earthing; Brace 12 connected to the side of the steel wire fixed steel 17, the anchorage 23 is installed on the abdomen that is the side of the steel wire fixed steel 17, and the front flange of the prestress temporary girder 20 for the mud 14) a plurality of load transfer members (24) installed on the sliding bolts (73) and the lower part of the load transfer members (24) provided on both sides thereof, and the stroke fixing holes (76) installed at the lower sides, and interconnected to the stroke fixing holes (76). The steel wire 13 is connected to the fixed stroke steel wire 74, the wire guide device 40 installed so that the steel wire can be installed as a parabola at the end of the load transfer member 24, and the fixing holes 23 on both sides. While the steel wire is mounted on the wire guide device 40 is characterized by A temporary girder with prestressing, including a device for generating elongation in steel wires. A plurality of vertical piles (16) provided along the excavation surface including the end face, a temporary structural structure (10) provided with a girder (11) in contact with the vertical pile, and at both ends provided in the cross section of the starting point of the end face The prestressed temporary girders 20 for the mudstone and the pressure regulating steel 25 installed on both sides of the prestressed temporary girders 20 for the mudstone, and the pressure regulating steel ( Sliding space 22 formed to move in a predetermined range on the side of the 25, the girder 11 is provided in contact with the sliding space 22, the girder 11 is installed on the left and right of the sliding space 22. ) And one side of the pressure regulating steel 25 and the side of the brace 12 are supported by the bolt nut coupling 38, the fixing unit 23 installed in the abdomen which is the side of the pressure regulating steel 25, and the pressure Between adjustable steel (25) and prestressed girders (20) The installed stroke generating device 30 and the band extension portions 49 on both sides of the girder 11 are attached to the side of the pressure regulating steel 25, and the girder 11 and the prestress provision girder for the mud wall are installed. A plurality of intermediate props (61) installed between the (20) and the load transfer member (24) installed at least a plurality of sliding bolts coupled to the front flange (14) of the prestressed girder (20) for the retaining wall (20); The steel wire guide device 40 is installed so that the steel wire can be installed in contact with the end of the load transfer member 24, and the steel wire 13 installed to pass through between the steel wire guide device to the fixing unit 23 installed on both sides. A prestress including a device for fixing the steel wire, which is characterized in that a collision protection measure 48 is provided between the braces 12 provided on both sides of the rod transfer member 24 at a predetermined distance away from the end of the load transfer member 24. Temporary . A fixing bracket (29) having a fixing device installed on the side of the girder (11), a steel wire (13) interconnecting the fixing brackets, and the fixing bracket (29) are installed in contact with the acupressure bearing steel plate (33) at both ends. Prestressing for the earthquake block is installed with a brace jangjang 71 installed in contact with the flange of the facility girder 20 and the hydraulic jack (32) installed in the center of the brace including a device for generating a stretch force in the steel wire Temporary girder with prestress. The method according to claim 1 or 5,       The stroke generating device 30 is attached to the pressure-bearing steel plate 25 and the pressure-bearing steel plate 33 at the ends of the prestress temporary girders 20 for the retaining wall, respectively, and the pressure-bearing steel plate 33 on both sides The hydraulic jack 32 is provided in the center between them, and the steel pipe 31 is welded to the acupressure supporting steel plate 33 provided at the end of the pressure regulating steel 25 above and below the hydraulic jack 32, and the steel pipe 31 is welded. ) Attaching the bolt 34, the stroke is moved, and then fastening the long bow nut (35) to the bolt (34), the acupressure supporting steel sheet provided at the end of the prestressed girders (20) A temporary girder incorporating a prestress including a device for generating an extension force in a steel wire characterized by fastening with a nut (39) to a bolt (34) end that protrudes through (33). The method according to claim 1 or 5       The stroke generating device 30 is attached to the pressure-bearing steel plate 25 and the pressure-bearing steel plate 33 at the ends of the prestress temporary girders 20 for the retaining wall, respectively, and the pressure-bearing steel plate 33 on both sides The load measuring sensor 46 is installed while the hydraulic jack 32 is provided at the center between the steel pipes 31 on the pressure bearing steel plate 33 provided at the end of the pressure regulating steel 25 above and below the hydraulic jack 32. ) Welding, attaching the bolt 34 to the steel pipe 31, moving the stroke, and then fastening the long bow nut 35 to the bolt 34, the prestress temporary girders 20 And a prestress incorporating a prestressing device including a device for generating extension force in a steel wire characterized by fastening with a nut (39) to a bolt (34) end that protrudes through the acupressure supporting steel plate (33) provided at the end of the head. The method according to claim 1 or 5 The stroke generating device 30 is attached to the pressure-bearing steel plate 25 and the pressure-bearing steel plate 33 at the ends of the prestress temporary girders 20 for the retaining wall, respectively, and the pressure-bearing steel plate 33 on both sides The load measuring sensor 46 is installed while the hydraulic jack 32 is provided at the center thereof, and the channel 47 is provided on the pressure bearing steel plate 33 provided at the end of the pressure regulating steel 25 above and below the hydraulic jack 32. ), And attaching the bolt 34 to the channel 47, while bolting the bolt 34 to the long butterfly nut 35 provided at the end of the earth girders 20 Apparatus for generating a stretch force in a steel wire characterized in that the prestressing prestress for cladding is fastened with a nut 39 to the end of the bolt (34) protruding through the pressure bearing steel plate 33 installed at the end of the facility girder 20 Incorporating pre-stressed girders, including. The method according to any one of claims 1 to 5 When the load transfer member 24 is installed on the front flange of the facility girders, the central axis 26 of the load transfer member 24 is directed toward the circular center 27 in the shape of the steel wire arrangement. While the steel wire 13 is in contact with the curved saddle 42 while being installed so as to be perpendicular to the tangential direction (T) of the central axis 26 and the steel wire 13 to the steel wire characterized in that the installation Temporary girder with prestressing, including a device that generates elongation. The method according to any one of claims 1 to 5.       The steel wire guide device 40 is provided with a base steel plate 28 and a reinforcing plate 15 at the end of the load transfer member 24, the guide plate (on both sides of the load transfer member 24 including the base steel plate) 41 is installed, and attached to the base steel plate 28 between the guide plate 41, and install the curved birds 42 having a curved surface convex surface of the steel wire, the curved surface of the curved birds 42 A temporary girder incorporating prestressing including a device for generating an extension force in a steel wire characterized by installing a steel wire break-away bar 45 by penetrating upper portions of the guide plates 41 installed on both sides thereof while contacting the steel wire. The method according to any one of claims 1 to 5 When the steel wire is installed in the load transfer member in a double manner, a base steel plate 28 and a reinforcement plate are installed at the ends of the load transfer member 24, and the pipe pins are disposed up and down inside the base steel plate 28. The guide plate 41 provided with the 44 is installed on both sides, the pipe pin portion 44 provided in the guide plate 41 is installed up and down so that the groove formed in the side of the steel pipe birds 43 is inserted, the steel pipe After each of the steel wire 13 is installed in contact with the saddle 43, and the steel wire 13 is installed in contact with the steel pipe birds 43 up and down, the steel wire escape prevention bar 45 on the upper portion of the guide plate 41 The provisional girder which introduces the prestress including the apparatus which generate | occur | produces a stretch force in the steel wire which is characterized by installing the steel wire 13 is prevented from being separated. The method according to any one of claims 1 to 5       The prestress for the mud prestress is a double girders (50) for the mud prestress to be supported by the installation of a plurality of load transfer material 24 in a line interconnecting the facility girder 20 in the side Temporary girder with prestressing, including a device that generates elongation on characteristic steel wire. The method according to any one of claims 1 to 5       The girders 11 are installed between the prestressed girders 20 on both sides of the earthen board and bolt nut coupling 38, and the acupressure reinforcement 101 is installed on the flanges 14 at both sides of the bolt nut coupling. The brace 12 is installed at the center of the acupressure reinforcement 101, and the inclined brace 103 is provided at the acupressure reinforcement 101 at both sides, and the extensions and both sides of the central brace 12 are provided. The reinforcement part 21 is installed in the part where the inclined brace 103 meets, the screw jack 102 is installed in the outer side of the reinforcement part 21, and the brace 12 is installed in the outer side of the screw jack, and mutually Reinforced girder with a prestress including a device for generating a stretch force in the steel wire characterized by the installation of the brace and the temporary girder connecting portion 100 to be connected and supported. The method according to any one of claims 1 to 5.       Install acupressure reinforcement 101 connecting the flanges of the prestressed girders 20 on both sides of the mudguard at a predetermined interval, and install a support 12 at the center of the side of the acupressure reinforcement 101, Subsequently, a prestress including a device for generating extension force in a steel wire characterized by installing a screw jack 21 and installing a brace and a temporary girder connecting portion 100 to be supported by connecting and installing a brace 12 on the outside thereof. Introduced temporary girder. The method according to any one of claims 1 to 5. The braces 12 are connected to the flanges of the prestressed girders 20 on both sides installed at predetermined intervals, respectively, and intermediate piles 77 are installed between the braces 12 connected to both sides. Reinforced girder including pre-stress including a device for generating a stretch force in the steel wire characterized by the installation of the brace and the temporary girder connecting portion 100 to support while preventing buckling of the installed brace (12). The method according to any one of claims 1 to 5.      Collision reinforced by installing a vertical angle 54 between the brace 12 and the brace 12 up and down, and installing a horizontal angle 55 at the portion where the brace 12 and the vertical angle 54 meet each other. The temporary girder which introduced the prestress which included the apparatus which generate | occur | produces a stretch force in the steel wire which is characterized by being the protection measure 48. The method according to any one of claims 1 to 5       The sliding bolt coupling 73 is provided with a stainless plate 53 in the lower portion of the flange 14, and then install the reinforcement plate 15, and then install a load transfer material 24, A long hole 51 is formed in the flange 14, the stainless plate 53, and the reinforcing plate 15 so as to penetrate each other. A washer 52 is provided at an upper and lower part of the outside of the long hole 51, and the washer 52 And a pre-stressed girder including a device for generating an elongation force on a steel wire characterized by penetrating the hole and the long hole (51). The method of claim 6,       When the girder 11 and the brace are rigidly combined, the girder 11 is deformed downward when the external force is applied, and the brace 11 is bent upward by the prestress, and the girder 11 and the brace Girder 71 is a pre-stressed girders including a device for generating an elongation force in the steel wire characterized by the close contact with each other to be integrally coupled to form a synthetic cross-section. The method of claim 19,       When the external force is large when synthesized as described above, the contact portion of the titanium elastic clip 78 having an omega shape in a portion where the flange 14 of the girder 11 and the flange 14 of the brace long 71 are in contact with each other ( 79) and a pre-stressed girder including a device for generating an elongation force in a steel wire characterized by being coupled and fastened with a bolt nut 38 through the elastic clip 80 connected to the close contact portion 79. . The pressure regulating steel (25) is connected to both ends of the prestressed temporary girder (20) for the earth retainer,       On the side of the pressure regulating steel 25 is installed a sliding space 22 which can move in a certain range,      Connect with the brace 12 in the side of the pressure-controlled steel and the girder 11,       The fixing port 23 is installed in the abdomen which is a side surface of the pressure regulating steel 25,       The stroke generating device 30 is installed within the gap formed between the pressure regulating steel 25 and the prestressing steel plate 33 provided at both ends of the facility girder 20,       A plurality of load transfer members 24 are installed on the lower flange 14 of the prestress temporary girder 20 for the earth retainer by sliding bolt coupling 73,       Install the wire guide device 40 so that the wire can be installed as a parabola at the end of the load transfer material 24, The steel wire is mounted on the wire guide device 40 while connecting the steel wire 13 to the fixing holes 23 on both sides, and then a stroke is generated in the hydraulic jack of the stroke generating device to push the pressure regulating steel into the sliding space. When the steel wire settled in the control steel is stretched and applied, and then fixed, the stretch force that stretches the steel wire is converted to prestress force and at the same time, the force of external force offset reaction force (PV) that lifts the load transfer material is applied. A method of introducing prestress into a girder girder comprising a device for generating a stretching force on a steel wire characterized by the prestress being a temporary structural body (10) adapted to be delivered to the girder as a prestress. Connect the steel wire fixed steel (17) to both side ends of the prestressed temporary girders (20) for retaining, In connection with the brace 12 in the side of the steel wire fixed steel 17,       A fixing unit 23 is installed in the abdomen which is a side surface of the steel wire fixed steel 17, A plurality of load transfer members 24 are provided by sliding bolt couplings 73 on the front flange 14 of the prestress temporary girder 20 for the retaining wall having the acupressure supporting steel plates 33 at both ends thereof.       While installing the support belt 71 between the load transfer member 24 and the stroke generating device 30 that is the hydraulic jack 32 between the support belt 71,       Install the wire guide device 40 so that the wire can be installed as a parabola at the end of the load transfer material 24,       While connecting the steel wire 13 to the fixing fixtures 23 on both sides, the steel wire is mounted on the wire guide device 40, and then a stroke is generated in the hydraulic jack to push the brace to the outside, and the load transfer material is erected vertically. At the same time, the steel wire is raised upward force, and when fixed, the external force offset reaction force (PV) rising upward is transmitted to the load transfer material, the force structure so that the prestress for the mud wall is introduced into the girder pre-stress (10) A method of introducing prestress into a girder girder including an apparatus for generating a stretching force on a steel wire characterized by Connect the steel wire fixed steel (17) to both side ends of the prestressed temporary girders (20) for retaining, In connection with the brace 12 in the side of the steel wire fixed steel 17,       A fixing unit 23 is installed in the abdomen which is a side surface of the steel wire fixed steel 17, A plurality of load transfer members 24 are provided by sliding bolt couplings 73 on the front flanges 14 of the prestress temporary girder 20 for the retaining wall having the acupressure supporting steel plates 33 at both ends thereof. The fixed anchoring holes 75 are installed at the load transfer member 24 provided at the outermost side, and the stroke anchoring holes 76 are installed at the flanges 14 of the prestressed girder 20 for the retaining wall.       Connecting and fixing the stroke steel 74 to each of the fixing holes 75 and 76,      Install the wire guide device 40 so that the wire can be installed as a parabola at the end of the load transfer material 24,      When the steel wire is mounted on the steel wire guide device 40 while connecting the steel wire 13 to the fixing holes 23 on both sides, and then the steel wire fixed to the stroke fixing hole is fixedly fixed, the load transfer material is pushed outward and vertically. When the steel wire acts upward, the force is generated and transmitted to the load transfer material, and when fixed, the upward force offset force (PV) force transmitted to the load transfer material is prestressed to the facility girder. A method of introducing prestress into a girder girder comprising a device for generating a stretching force on a steel wire characterized by being a temporary structural body (10) to which the prestress is introduced. Steel wire fixing steels (17) are respectively installed at both ends of the prestress temporary girder (20) for the earth barrier, In connection with the brace 12 in the side of the steel wire fixed steel 17, A fixing unit 23 is installed in the abdomen which is a side surface of the steel wire fixed steel 17, A plurality of load transfer members 24 are provided by sliding bolt couplings 73 on the front flange 14 of the prestress temporary girder 20 for the retaining wall having the acupressure supporting steel plates 33 at both ends thereof.       The stroke fixing hole 76 is provided at the lower part of the load transfer member 24 provided at both sides,       The stroke steel wire 74 is interconnected to the stroke fixing hole 76,      Install the wire guide device 40 so that the wire can be installed as a parabola at the end of the load transfer material 24,      When the steel wire is mounted on the steel wire guide device 40 while connecting the steel wire 13 to the fixing holes 23 on both sides, and the steel wire fixed to the stroke fixing hole is tensioned, the load transfer material is collected inward, and the load The transfer material gathers inward and at the same time the load transfer material is erected vertically and at the same time the force of the steel wire is raised and transmitted to the load transfer material. A method of introducing prestress into a temporary girder comprising an apparatus for generating an extension force on a steel wire characterized by being a temporary structural body (10) in which a prestress for earth retaining is transmitted to a facility girder to introduce a prestress. Install a plurality of vertical piles (16) along the excavation surface including the side surface, Install the temporary structural structure 10 is installed in contact with the vertical pile girders 11, The prestress temporary girder 20 for the mudstone having the acupressure supporting steel plate 33 is installed at both ends in the end face of the starting point of the end face, Connect the pressure regulating steel 25 to both sides of the prestressed girders 20 for the earth retaining, Sliding space 22 is installed on the side of the pressure control steel 25 to move in a certain range,       The girder 11 is installed in contact with the sliding space 22,      On the side of the girder 11 and the pressure regulating steel 25 is supported by the brace 12 and the bolt nut coupling 38,      The fixing port 23 is installed in the abdomen which is a side surface of the pressure regulating steel 25,      A stroke generating device 30 is installed between the pressure regulating steel 25 and the prestressed girder 20 for the soil barrier,      The belt extension parts 49 of both sides of the girder 11 are attached to the side of the pressure regulating steel 25,      Installing a plurality of intermediate braces 61 between the girder 11 and the pre-stressed temporary girder 20 for the soil barrier,      A plurality of load transfer members 24 are installed on the front flange 14 of the prestress temporary girder 20 for the earth retainer by sliding bolt couplings 73,      The steel wire guide device 40 is installed so that the steel wire can be installed in contact with the end of the load transfer member 24, and the steel wire 13 installed to pass through between the steel wire guide device to the fixing unit 23 installed on both sides. After fixing, the collision protection measure 48 is installed between the braces 12 provided on both sides away from the end of the load transfer member 24, and then a stroke is generated in the hydraulic jack of the stroke generating device to generate pressure stroke. When pushed to the sliding space portion of the steel wire is fixed to the pressure regulating steel is raised up the force acting on the load transfer material, and when fixed, the external force offset reaction force (PV) is transmitted to the pre-stressed facility girder for the mud wall When the transmitted force is transmitted to the intermediate brace again, it is characterized in that the side cross-facing facility structure 60 to offset the external force acting on the girder 11 of the side cross section. A method for introducing a prestress in gasiseol girders including apparatus for generating a stretching force to the liner. The method of claim 21 or 25,       The stroke generating device 30 is attached to the pressure-bearing steel plate 25 and the pressure-bearing steel plate 33 at the ends of the prestress temporary girders 20 for the retaining wall, respectively, and the pressure-bearing steel plate 33 on both sides The hydraulic jack 32 is provided in the center between them, and the steel pipe 31 is welded to the acupressure supporting steel plate 33 provided at the end of the pressure regulating steel 25 above and below the hydraulic jack 32, and the steel pipe 31 is welded. Attach the bolt 34 to the bolt, move the stroke, and then fasten the long bow nut 35 to the bolt 34 while the acupressure supporting steel sheet installed at the end of the prestressed girders 20 for the retaining wall ( 33) A method for introducing prestress into a girder girder including a device for generating an extension force on a steel wire characterized by fastening with a nut (39) to a bolt (34) end that protrudes through (33). The method according to claim 21 or 25. The stroke generating device 30 is attached to the pressure-bearing steel plate 25 and the pressure-bearing steel plate 33 at the ends of the prestress temporary girders 20 for the retaining wall, respectively, and the pressure-bearing steel plate 33 on both sides The load measuring sensor 46 is installed while the hydraulic jack 32 is installed in the center thereof, and the steel pipe 31 is mounted on the pressure bearing steel plate 33 provided at the end of the pressure regulating steel 25 above and below the hydraulic jack 32. ) Welding, attaching the bolt 34 to the steel pipe 31, moving the stroke, and then fastening the long bow nut 35 to the bolt 34, the prestress temporary girders 20 A method of introducing prestress into a girder including a device for generating an extension force in a steel wire characterized by fastening with a nut 39 to a bolt 34 end projecting through the acupressure supporting steel plate 33 installed at the end of . The method according to claim 21 or 25. The stroke generating device 30 is attached to the pressure-bearing steel plate 25 and the pressure-bearing steel plate 33 at the ends of the prestress temporary girders 20 for the retaining wall, respectively, and the pressure-bearing steel plate 33 on both sides The load measuring sensor 46 is installed while the hydraulic jack 32 is provided at the center thereof, and the channel 47 is provided on the pressure bearing steel plate 33 provided at the end of the pressure regulating steel 25 above and below the hydraulic jack 32. ), Weld the bolts 34 to the channel 47, move the stroke, and then fasten the long nut 35 to the bolts 34 of the prestressed girder 20. A method for introducing prestress into a girder including a device for generating an extension force in a steel wire characterized by fastening with a nut (39) to a bolt (34) end projecting through a pressure bearing steel plate (33) provided at an end. The method according to any one of claims 21 to 25. When the load transfer member 24 is installed on the front flange of the facility girders, the central axis 26 of the load transfer member 24 is directed toward the circular center 27 in the shape of the steel wire arrangement. The portion where the steel wire is in contact with the curved birds 42 or the portion where the steel wire 13 is in contact with the steel pipe birds 43 is perpendicular to the tangential direction T of the central axis 26 and the steel wire 13 while being installed so as to be installed in such a manner as to be installed thereon. A method of introducing prestress into a girder girder including a device for generating a stretching force on a steel wire characterized by being installed). The method according to any one of claims 21 to 25. The wire guide device 40 is provided with a base steel plate 28 and a reinforcement plate at the end of the load transfer member 24, the guide plate 41 on both sides of the load transfer member 24 including the base steel plate And attaching to the base steel plate 28 between the guide plates 41 and attaching curved saddles 42 having convex curved surfaces where the steel wires are in contact with each other, and placing the steel wires on the curved surfaces of the curved birds 42. A method of introducing prestress into a girder girder including a device for generating an extension force on a steel wire characterized in that a steel wire break-away bar (45) is provided through the upper portions of the guide plates (41) provided on both sides while being installed in contact. The method according to any one of claims 21 to 25. When the steel wire is installed in the load transfer member in a double manner, a base steel plate 28 and a reinforcement plate are installed at the ends of the load transfer member 24, and the pipe pins are disposed up and down inside the base steel plate 28. The guide plate 41 provided with the 44 is installed on both sides, the pipe pin portion 44 provided in the guide plate 41 is installed up and down so that the groove formed in the side of the steel pipe birds 43 is inserted, the steel pipe After each of the steel wire 13 is installed in contact with the saddle 43, and the steel wire 13 is installed in contact with the steel pipe birds 43 up and down, the steel wire escape prevention bar 45 on the upper portion of the guide plate 41 A method of introducing prestress into a girder girder including an apparatus for generating a stretching force in a steel wire characterized by installing a steel wire to prevent the steel wire from being separated. The method according to any one of claims 21 to 25. Prestress is introduced to a temporary girder including a device for generating a stretch force on the steel wire characterized in that the prestress for masonry is a double girder (50) made by connecting the prestress temporary girder 20 in the side. How to. The method according to any one of claims 21 to 25. The girders 11 are installed between the prestressed girders 20 on both sides of the earthen board and bolt nut coupling 38, and the acupressure reinforcement 101 is installed on the flanges 14 at both sides of the bolt nut coupling. The brace 12 is installed at the center of the acupressure reinforcement 101, and the inclined brace 103 is provided at the acupressure reinforcement 101 at both sides, and the extensions and both sides of the central brace 12 are provided. The reinforcement part 21 is installed in the part where the inclined brace 103 meets, the screw jack 102 is installed in the outer side of the reinforcement part 21, and the brace 12 is installed in the outer side of the screw jack, and mutually Method for introducing pre-stress to the prestressed girders for earthquakes including a device for generating a stretch force in the steel wire characterized by the installation of the brace and the temporary girder connecting portion (100) to be connected and supported. The method according to any one of claims 21 to 25.       Install the acupressure reinforcement base 101 connecting the flanges of the prestressed girders 20 for both mud walls installed at predetermined intervals, and install a brace 12 at the center of the side of the acupressure reinforcement base 101, Next, the screw jack 21 is installed in succession, and the brace and the temporary girders connecting part 100 are installed so that the screw jack 21 is connected to and installed in the screw jack 21 so as to be supported. A method of introducing prestress to a girder including a generating device. The method according to any one of claims 21 to 25. The braces 12 are respectively connected to the flanges of the prestressed girders 20 for both sides of the mudguards installed at predetermined intervals, and intermediate piles 77 are installed between the connected braces 12 to both sides. A method of introducing prestress to a girder including a device for generating a stretching force on a steel wire characterized by the installation of a brace and a temporary girder connecting portion (100) to support while preventing buckling of the brace (12) installed in the. The method according to any one of claims 21 to 25. Collision reinforced by installing a vertical angle 54 between the brace 12 and the brace 12 up and down, and installing a horizontal angle 55 at the portion where the brace 12 and the vertical angle 54 meet each other. A method of introducing prestress into a girder girder including a device for generating a stretching force on a steel wire characterized by being a protective measure (48). The method according to any one of claims 21 to 25.       The sliding bolt coupling 73 is provided with a stainless plate 53 in the lower portion of the flange 14, and then install the reinforcement plate 15, and then install a load transfer material 24, A long hole 51 is formed in the flange 14, the stainless plate 53, and the reinforcing plate 15 so as to penetrate each other. A washer 52 is provided at an upper and lower part of the outside of the long hole 51, and the washer 52 And a prestress in a girder girder including a device for generating an elongation force on a steel wire characterized by having penetrated through the hole and 51).

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