KR200285860Y1 - temporary bracket for construction of precast concrete beam bridge - Google Patents

Abstract

The present invention relates to a temporary beam for the PC beam bridge. More specifically, in the PC beam bridge construction, the temporary bracket is completed at the bottom of the PC beam only by simple assembly and installation, and the assembly and installation of the temporary bracket is performed at the upper part of the PC beam, thereby eliminating the risk of the worker due to the height work. A temporary beam for a PC beam bridge, the overall shape of which is an inverted T-shaped pipe member, a pair of support members including a vertical member and a horizontal member; Fixing frame; Connecting member; And a pair of moving devices, wherein the moving devices are configured in a flag type and a nut type.

Description

Temporary bracket for construction of precast concrete beam bridge

The present invention relates to a temporary beam for the PC beam bridge. More specifically, in the PC beam bridge construction, the temporary bracket is completed at the bottom of the PC beam only by simple assembly and installation, and the assembly and installation of the temporary bracket is performed at the upper part of the PC beam, thereby eliminating the risk of the worker due to the height work. The present invention relates to a PC beam bridge hypothesis bracket.

In general, the construction method for slab casting to the upper part of the pier constructed in the bridge construction is selected in consideration of various comprehensive factors such as the type of bridge, site topography, height of construction, traffic conditions under the bridge, air and construction cost.

Conventionally, as a temporary construction method for installing an upper structure, a bridge angle for supporting girders between already constructed piers is installed, and a slab concrete is placed on the upper part after installing a copper bar using a system support from the lower foundation of the bridge. It has been mainly applied to the construction method for installing the formwork for the construction, the construction method for installing the timber club on the upper part of the piers, or the mobile scaffolding method for constructing one span at a time using mechanized construction and formwork.

However, the Dongbari method of installing Dongbari from the lower part of the bridge has the disadvantage of requiring a lot of materials and manpower when the height of the construction is high, and the geometry space to be secured as a temporary space.In addition to the installation of the Dongbari and the formwork, In order to secure a working space, scaffolding work must be preceded by connecting steel wires from the reinforcing bar on the girder and then descending to the side to tie down the scaffolding scaffolding and install temporary materials such as work scaffolding or safety nets.

On the other hand, the construction method for installing wood clubs is to install the workbench and slab clubs between the girders and girders at required intervals, and then assemble the slab formwork with plywood, etc. Due to its poor rigidity, it must be installed at narrow intervals, and it is easily damaged due to repeated installation and dismantling operations, which lowers the capacity ratio and consequently increases the construction cost.

In addition, in the mobile scaffolding method, it is not necessary to install the copper bar from the ground, so it can be installed without depending on the conditions of the mold space or the ground, but the installation work is complicated and the input of large equipment is essential, and the construction method for the maintenance of the bridge Not applicable.

Therefore, the present inventors can easily install a copper bar, a working scaffold or a safety net under the PC beam while eliminating the defects of the related art, and are made of steel, which enables high-efficiency ratio and economical work. Utility Model No. 245284 PC beam bridge temporary bracket was devised to apply to the above, but the PC beam bridge bracket can be installed only on the lower part of the PC beam, so that the risk of heights can be followed. It is difficult to secure safety, and the development of means to solve this problem is urgently needed because additional equipment is needed to install the temporary equipment.

The present invention devised to solve the above problems is to complete the temporary frame on the lower part of the PC beam by simple assembly in the PC beam bridge construction, which is difficult to work in the air, and install slab concrete and install slab concrete on the temporary frame. It is to provide a temporary beam for PC beam bridge that can easily perform bridge maintenance.

In addition, since the assembly and installation of the temporary beam bracket for the PC beam bridge of the present invention is made at the upper part of the PC beam, it is unnecessary to construct a separate installation for the work at the lower part of the PC beam, thereby eliminating the risk of heights and safety for workers. It is to provide a temporary beam for the PC beam bridge.

1 is a front view of a specific example of a temporary beam for the PC beam bridge of the present invention.

2 is a perspective view of a specific example of the temporary beam for the PC beam bridge of the present invention.

3 is a perspective view (a) and a front view (b) of another embodiment of the temporary beam bracket for PC beam bridge of the present invention.

4 is a specific example of an installation state of the temporary beam for the PC beam bridge of FIG. 1 installed in the PC beam.

<Description of the symbols for the main parts of the drawings>

1: pier 2: PC beam

100: PC beam bridge temporary bracket 110: support member

111: vertical member 111a: guide plate

112: horizontal member 112a: (horizontal) coupling groove

112 b: thread 120: fixing frame

121: coupling hole 130: connection member

131: fastening hole 140: moving device

141: flag type mobile device 141a: (flag type mobile device) coupling groove

141b: fixing pin 141c: fixing plate

141d: Fixed rod 141e: Connector

142: nut type moving device 142a: fixed rod

142b: Nut with handle 143: Mounting rod (not shown)

The present invention relates to a PC beam bridge construction bracket 100, the present invention will be described according to the drawings as follows.

1 to 3 is a front view and a perspective view of specific examples of the PC beam bridge hypothesis bracket 100 of the present invention, PC beam bridge hypothesis bracket 100 of the present invention is a pipe member of the inverted T-shape of the overall shape, A vertical member (111) including an inclined bent portion and a vertical portion formed continuously with the inclined portion; And a horizontal member 112 formed at right angles to the vertical member 111 and having elliptical coupling grooves 112a formed on upper and lower surfaces opposite to the inclined portion. And two rectangular plates formed along the outer circumferential surface of the vertical member 111 and the horizontal member 112 of each of the supporting members 110, and the upper ends of the two plates opposite to the inclined portion of the supporting member 110. Fixing frame 120 each formed with a coupling hole 121 is formed with a fixing pin (141b); A pipe member inserted into the horizontal member 112 of the pair of supporting members 110, the connecting member 130 having a plurality of fastening holes having a predetermined interval penetrating up and down; And a pair of moving devices 140 installed at the pair of supporting members 110 and the connecting member 130 to move the supporting members 110 to both sides.

At this time, the horizontal member 112 and the connection member 130 of the pair of support members 110 may be any shape suitable for construction such as square pipe or circular pipe.

In addition, the pair of support members 110 are formed with a guide plate 111a over the inclined and vertical portions of the vertical member 111, the guide plate 111a is formed on the lower flange of the PC beam (2) When the PC beam bridge construction bracket 100 is installed, it guides the proper positioning of the PC beam bridge construction bracket 100 at the flange of the PC beam 2, and reinforces the vertical member of the PC beam bridge construction bracket 100. It plays a role.

In addition, the inclination angle of the inclined portion of the vertical member 111 of the pair of supporting members 110 is changed according to the size and type of the PC beam.

The moving device 140 is divided into a flag type moving device 141 and a nut type moving device 142 according to the shape.

1 and 2, the flag type moving device 141 moves up and down through the coupling groove 112a of the support member 110 and the fastening hole 131 of the connection member 130. (141d); And a fixing plate 141c formed on an upper side of the fixing rod 141d and including a coupling groove 141a formed in a diagonal direction and a connection hole 141e formed at an opposite side of the upper end of the coupling groove 141a. The fixing pin 141b formed in the fixing frame 120 of the supporting member 110 is inserted into the coupling groove 141a of the fixing plate 141c so that the moving device 140 moves up and down. As the fixing pin 141b of the fixing frame 120 moves diagonally along the coupling groove 141a, the supporting member 110 is moved to the left and right.

In addition, when the support member 110 is in close contact with the flange lower side surface of the PC beam 2, the flag type moving device 141 inserts the installation rod 143 which will be described later into the connection hole 141e of the fixing plate 141c. By moving the mounting rod 143 up, down, left, and right, the pair of supporting members 100 move left and right, and are closely adhered to and fixed to the PC beam 2.

The flag type moving device 141 is a preferred device that can be adapted in any cross-sectional state of a general PC beam for a bridge 2 in which the flanges at both ends form the same cross-section while maintaining the same inclination angle. The support member 110 is fixed and installed on the PC beam 2 more effectively and stably than 142.

In addition, as shown in Figure 3, the nut-type fixing device 142 is a predetermined contact where the coupling member 131 of the horizontal member 112, the coupling groove 112a of the support member 110 and the connecting member 130 meets. A fixed bar 142a inserted into the position; And a nut with a handle 142b which is positioned between the fixing rod 142a and the supporting member 110 to be fastened. The nut 142b includes the nut 142b of the supporting member 110. As the support member 110 moves left and right along the horizontal member 112, the support member 110 moves to the left and right. At this time, the nut-type fixing device 142 also rotates the nut 142b using the mounting rod 143 (not shown), which will be described later, and the support member 110 is finally moved left and right.

In addition, a thread 112b is formed in the horizontal member 112 of the support member 110 used when the nut-type moving device 142 is used, and the handled nut 142b may be moved in a screw type.

When installing the PC beam bridge temporary bracket 100 to the PC beam (2), it is alternatively installed according to the construction situation of the above-described fixing device (141, 142).

In addition, the installation rod 143 (not shown) used in the PC beam bridge construction bracket 100 of the present invention is bent in the shape of a needle-shaped end, the other end of the mobile device such as a round bar or reinforcing bar handle is formed ( 140 is used to fasten up and down (flag type mobile device) or to rotate and fix (nut type mobile device).

4 is a perspective view briefly showing a state in which the temporary beam bracket 100 for the PC beam bridge of the present invention is installed on the PC beam 2 of the bridge, and detailed embodiments thereof are as follows. It will be described based on the fixing device (141).

Upon completion of the pier construction, which is the lower structure in the PC beam bridge, the PC beam 2 is installed at regular intervals on the pier 1, and the construction work for the concrete slab casting, which is the upper structure, begins.

In the upper portion of the PC beam (2) of the completed pier (1) is inserted into the horizontal member 112 of the pair of supporting members 110 of the connecting member 130 of the temporary beam bracket 100 for the PC beam bridge. Thereafter, the fixing rod 141d of the moving device 141 is disposed at a predetermined position where the coupling hole 131 of the connection member 130 and the coupling groove 112a of the horizontal portion 112 of the support member 110 meet. After inserting, the fixing pin at a predetermined position where the coupling hole 121 of the fixing frame 120 of the PC beam bridge hypothesis bracket 100 and the fixing plate 141c of the moving device 141 meet. Insert and connect 141b). At this time, the fixing rod (141d) of the moving device 141 is determined in consideration of the proper spacing of the PC beam (2), the insertion position of the coupling hole 121 and the fixing plate (141c) of the fixing frame 120 The fixing pin 141b inserted into the coupling groove 141a is fastened with a margin enough to be moved up and down along the coupling groove 141a of the fixing plate 141c. As a result, in the state in which the moving device 141 is raised as shown in FIGS. 1 and 2, the fixing pin 141b of the fixing frame 120 is located at the lower end of the coupling groove 141a of the fixing plate 141c, and the moving device 141. As the) is lowered, the coupling groove 141a of the fixing plate 141c is moved downward in a diagonal direction with respect to the fixing pin 141b, whereby the supporting member 110 is moved to the left. As a result, the movement amount of the moving device 141 is determined by the horizontal length of the coupling groove 141a of the fixed plate 141c, and the movement of the coupling groove 112a of the horizontal member 112 of the support member 110 corresponds to the movement amount. The length should be designed, and adjust the spacing of the fastening hole 131 of the connection member 130.

Since the assembled pair of PC beam bridge temporary bracket 100 is inserted into the connecting hole (141e) of the fixing plate (141c) while watching the gap between the two PC beam (2), After obliquely lowering to the lower surface of the PC beam 2, the PC beam 2 and the PC beam bridge construction bracket 100 is positioned using the guide plate of the support member to be perpendicular to each other. At this time, the guide plate 111a formed on the vertical member 111 of the pair of supporting members 110 increases the contact surface while inducing the PC beam bridge temporary bracket 100 to hold the proper position. The contact with the beam 2 is firmly established, and the guide plate 111a serves as a reinforcing plate of the vertical member 111. That is, the guide plate 111a is formed along the bent portion of the vertical portion and the inclined portion where the load is concentrated, so that the guide plate 111a reinforces the bent portion.

After installing the inclined portion of the vertical member 111 of the support member abuts on the flange of the PC beam (2), while moving the installation rod 143 inserted into the connecting hole (141e) of the fixing plate (41c) up or down, The weight of the installation rod 143 is transmitted to the moving device 141 so that the temporary beam bracket 100 for the PC beam bridge is in close contact with the PC beam 2. In addition, the moving device 141 is caused by gravity due to the vibration caused by the load applied to the connection member 130 of the pair of support members 100 fastened as described above or the operator passes the PC beam ( 2) is firmly tightened.

In addition, in the case of using the nut-type moving device 142 instead of the flag-type moving device 141, the coupling hole 131 of the connecting member 130 and the horizontal portion 112 coupling groove 112a of the support member 110. At this location, the nut 142b and the fixing rod 142a are inserted in consideration of the gap of the PC beam 2, and then rotated and fastened by using the mounting rod 143. The method is the same as the flagged fixture 141.

Later maintenance or dismantling of the top plate is formed to shorten the length of the installation rod (143, not shown) and to start the work in the piers by making a lever, and dismantle in the reverse order of the above-described installation method.

The temporary bracket for PC beam bridge of the present invention finishes the temporary frame on the lower part of the PC beam by simple assembly and installation in the construction of PC beam bridge, which is difficult to work in the air. And it is effective to provide a temporary beam for the PC beam bridge for the scaffold installation that can easily perform the maintenance of the bridge.

In addition, the installation of the temporary beam bracket for the PC beam bridge of the present invention is different from the conventional techniques used in the lower part of the PC beam for the hypothesis of the copper bar, so that all the work is performed at the upper part of the PC beam, a separate work for the PC beam lower work No installation work is required, material costs are reduced, and the risks associated with height work are eliminated, which enhances worker safety.

Claims (6)

A pipe member having an inverted T-shape in its overall shape, the vertical member including an inclined bent portion and a vertical portion formed continuously with the inclined portion; And a horizontal member formed at right angles to the vertical member and having elliptical coupling grooves formed on upper and lower surfaces opposite to the inclined portion. A fixing frame including two rectangular plates formed along the outer circumferential surface of the vertical member and the horizontal member of each of the supporting members, the coupling holes having fixing pins formed at upper ends of the two plates opposite to the inclined portion of the supporting member; A pipe member inserted into the horizontal member of the pair of supporting members, the connecting member having a plurality of fastening holes spaced up and down; And A pair of moving devices installed on the pair of supporting members and the connecting member to move the supporting members to both sides; PC beam bridge hypothesis bracket comprising a. The temporary beam for the PC beam bridge of claim 1, wherein a guide plate is further formed on the vertical member of the pair of support members. According to claim 1, The moving device, the overall shape is a flag shape, the fixing rod which moves up and down through the coupling hole of the coupling member and the connecting member of the support member; And a fixing plate formed at an upper side of the fixing rod, the fixing plate including a coupling groove formed in a diagonal direction and a connection hole formed opposite to the upper end of the coupling groove, and the fixing pin formed at the fixing frame of the supporting member in the coupling groove of the fixing plate. The insertion beam is a temporary beam for the PC beam bridge, characterized in that the support member is moved left and right by moving the pin of the fixing frame in a diagonal direction along the coupling groove of the fixing plate when the moving device moves up and down. The temporary beam for the PC beam bridge of claim 1, wherein a thread is further formed on an outer circumferential surface of the horizontal member on which the coupling groove of the support member is formed. The method of claim 4, wherein the moving device is a fixing rod is inserted into a predetermined position where the coupling member of the horizontal member coupling groove of the support member and the connecting member; And A nut with a handle positioned between the fixing rod and the support member; A nut-type moving device comprising a PC beam bridge hypothesis bracket, characterized in that the support member is moved left and right as the nut moves to the left and right along the horizontal member of the support member. The method of claim 3 or 5, wherein the flag type of the moving device is moved up and down by moving the wire including a hook portion that is fitted to the connecting hole up and down on the PC beam, the nut type moving device of the wire A temporary beam for a PC beam bridge, characterized in that the hook is moved up and down by rotating the nut on the handle of the nut.