KR100995820B1 - Temporary bridge construction methods absorbing longtidudinal displacement and live load impact - Google Patents

Abstract

PURPOSE: A construction method of a temporary bridge is provided to control longitudinal displacement and impact resulting from temperature variation and etc., thereby preventing defects of the temporary bridge. CONSTITUTION: A construction method of a temporary bridge is as follows. Piles(100) are vertically installed in the ground. Longitudinal internal support beams(200) are installed on the top of the respective piles. A girder support beam(300) is installed between a first hinge connector and a second hinge connector installed in each longitudinal internal support beam and each pile. A girder(400) is installed on the top of the longitudinal internal support beam. A deck plate is installed on the top of the girder to complete a final deck(500).

Description

TEMPORARY BRIDGE CONSTRUCTION METHODS ABSORBING LONGTIDUDINAL DISPLACEMENT AND LIVE LOAD IMPACT}

The present invention relates to a temporary bridge construction method that can absorb longitudinal displacement and live load impact. More specifically, in the temporary bridge, in which a mold is installed on the upper surface of the temporary vent and a double-plate is installed on the upper part of the mold, the temporary bridge construction can absorb the longitudinal displacement of the mold and the impact caused by the live load. It is about a method.

1 shows a construction example of a conventional temporary bridge 10, for example, the mold 10 is installed in the lateral direction, it can be seen that the porous plate 20 is provided on the mold 10.

The load caused by the vehicle or the like that passes over the top plate 20 is transmitted to the hypothetical vent 30 by the pile plate 20 and the pile 31 and the bracing members 32 and 33 via the mold 10, It is installed to transmit the load.

At this time, the pile 31, such as H-shaped steel used for the construction of the temporary vent is limited to the load bearing capacity per unit, so that the pile is normally installed in two rows to sufficiently resist the load.

In addition, a method of reducing the production cost of the temporary vent 30 by using a circular steel pipe instead of the H-shaped steel as a temporary bridge is also introduced.

Although the temporary bridges are dismantled after the actual bridges are constructed, they may be installed for more than six months depending on the installation period of the permanent bridges.

Accordingly, the phenomenon that the mold 10 of the temporary bridge is stretched in the longitudinal direction according to the site conditions and temperature.

In other words. Since most of the molds are made of steel, the expansion and contraction according to temperature is larger than that of the concrete girders. Therefore, there is a certain influence on the longitudinal displacement and maintenance of the molds due to such expansion and contraction.

In addition, the temporary bridge using the steel reinforcement plate is repeatedly transmitted to the mold and the substructure due to the vehicle load, which causes fatigue to each structural member (mould, etc.) due to the continuous shock transmission as well as the noise around the temporary bridge. It is causing the phenomenon of weighting.

However, since the temporary bridge is temporarily installed, it is generally considered that the mold 10 is fixed to the temporary vent 30 without installing a bridge support or a damper capable of absorbing the vertical expansion and contraction of the mold in consideration of economical efficiency to be.

Of course, bridge bridges may be installed in temporary bridges, but when these bridges are usually installed and dismantled, construction costs of construction bridges will increase.

If the bridge support is installed, the height of the temporary bridge is inevitably increased. Therefore, there is a need for a temporary bridge construction method that can be easily installed and dismantled and secures economic feasibility. It became big.

In addition, in order to construct the temporary bridge, for example, a work scaffolding structure is installed around the temporary vent to provide a work space for the construction of the temporary bridge by the worker.

In other words, since there are many works to be worked around the lower part of the mold and the temporary vent, such as the longitudinal connection between the mold and the temporary vent, the working scaffold structure should be installed. There was virtually no difficulty in installing.

Furthermore, these work scaffolding structures do not need to go through precise cross-sectional design and manufacturing process because the equipment loads are not large because 2-3 workers and types of work are not large, but minimum stability must be secured after installation. It should be easy to install and easy to dismantle so that it can have advantages in its installation and installation.

Accordingly, the present invention allows to control the longitudinal stretching and impact according to the temperature in the temporary bridge, to prevent the occurrence of defects of the temporary bridge due to the longitudinal displacement and impact of the mold, Technical task to solve the provision of temporary bridge construction method provided with a scaffolding structure for easy installation and disassembly around.

The present invention

In the hypothesis bridge construction method comprising the step of installing a pile, a mold extending in the longitudinal direction on the upper pile, and installing a bottom plate including a perforated plate on the mold upper,

Between the upper part of the pile and the bottom of the mold is installed a longitudinal portion of the branch portion extending in both sides relative to the pile, one end is hinged to the hinge connector 1 installed on the bottom of the longitudinal portion of the branch beam and the other end is inclined downward Providing a mold support beam hingedly connected to the hinge connection 2 provided on the outer side of the pile, wherein the mold support beam absorbs the longitudinal displacement and the shock absorbing mold supporting beam to allow the mold support beam to absorb the longitudinal extension of the mold Provide temporary bridge construction method.

Also preferably, the hinge connector 1 may include a horizontal support plate formed on a bottom surface of a branch longitudinal beam end; And a protruding support plate formed on the bottom surface of the horizontal support plate with hinge holes formed to be spaced apart from each other. The hinge connector 2 includes a band supporting plate formed to surround the outer circumferential surface of the file. And a protruding support plate formed with a hinge hole formed on one side of the band support plate to be spaced apart from each other. The bridge construction method using a mold support beam absorbing longitudinal displacement and impact formed to be formed.

Also preferably, the mold support beam may include a middle body portion; End connecting portion is connected to both ends of the intermediate body portion and formed with a hinged hole forming a protruding connecting plate; comprising a hinge hole of the end connecting portion and the hinge hole of the hinge connector 1 and 2 is connected to the pin support beam Provided is a method for constructing bridge construction using a mold support beam for absorbing longitudinal displacement and impact so that one side and the other end of the hinge is connected to the point longitudinal beam and the pile, respectively.

Preferably, a length adjusting means including a clamp is inserted between the middle body portion and the end connecting portion to adjust a total length of the mold supporting beam, and a temporary supporting structure Provide a method.

Also preferably, the pile is a circular steel pipe so that the working scaffold structure for securing a working space in the circular steel pipe is further installed, the working scaffold structure, the rubber pad is inserted into the outer peripheral surface of the circular steel pipe; And a scaffold support on which an inner surface is pressed and fixed to an outer circumferential surface of a pad around the circular steel pipe and on which a working scaffold is mounted. A temporary bridge construction method using a mold supporting beam for absorbing longitudinal displacement and impact is provided.

The temporary bridges according to the present invention can absorb longitudinal stretching and impacts due to temperature without using bridge bearings, and can be reused later, thereby enabling more stable and economical construction of temporary bridges.

In addition, even when using a pile of steel pipe, the worktable can be easily installed around the pile, so construction of a temporary bridge with excellent workability and workability is possible.

The scope of the present invention is shown by the following claims rather than the above description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

1 is a perspective view of a conventionally completed temporary bridge,
2a, 2b and 2c is a construction sequence diagram of the temporary bridge according to the present invention,
3 is an exploded perspective view of the mold support beam according to the present invention;
4 is a perspective view of a temporary bridge according to the present invention.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Temporary bridge construction method capable of absorbing longitudinal displacement and impact according to the present invention

Temporary bridge according to the present invention is a large circular steel pipe (100), the longitudinal section longitudinal beam 200 is installed extending in the longitudinal direction on the upper surface of the pile, I is installed in the longitudinal direction on the upper surface of the longitudinal section beam A mold 400 including a mold steel, and a bottom plate 500 including a mold support beam 300 and a perforated plate installed on the mold upper surface are installed between the pile 100 and the branch longitudinal beam 200. It is configured to include.

First, as shown in FIG. 2A, the pile 100 is vertically installed on the ground.

The file 100 serves as a hypothetical vent constituting a conventional temporary bridge. The file 100 can be installed using a circular steel pipe, and can be installed in a manner such that it can be hammered or pressed into the ground, and a pile coupler 110 It can be used to secure a predetermined length.

In this case, the hinge connector 2 410 is mounted on the pile 100 so that the mold supporting beam 300 to be described later can be hinged.

Since the outer circumferential surface of the circular steel pipe pile 100 is a curved surface, the hinge connector 2 (410) is made in the form of a band so that it can be installed on the outer circumferential surface of the pile 100 by means of fasteners or welding by bolts and nuts.

The hinge connector 2 (410) is a band support plate 411 formed to surround the outer peripheral surface of the pile (100); And a protruding support plate 412 formed to be spaced apart from each other by forming a hinge hole 413 on one side of the band support plate 411.

In addition, the pile 100 is installed on the head of the pile cap 120 for supporting the branch longitudinal beam 200, which will be described later, such pile cap 120 is a horizontal support plate 121 installed on the upper surface of the pile 100 and It may be configured to include a reinforcing plate 122 installed to contact the upper outer peripheral surface of the pile 100 from the outer bottom surface of the horizontal support plate 111.

The pile 100 is installed in a plurality of spaced apart in the transverse direction at the position where the temporary vent is to be installed, the horizontal installation number and longitudinal installation interval of the pile 100 may be determined according to the conditions of the temporary bridge.

Next, the point longitudinal beam 200 is installed on the upper surface of the pile 100, the bottom surface is installed on the upper surface of the horizontal support plate 121 of the pile cap 120 installed on the pile 100.

That is, by using the H-beam or I-beam, the branch longitudinal beam 200 is fixed to the upper surface of the pile 100 by fasteners or welding such as bolts or nuts on the upper surface of the pile cap 120.

Since the branch part longitudinal beam 200 is installed to reinforce the branch part while forming the branch part on the pile 100, the longitudinal beam 200 extends in the longitudinal direction, thereby reducing the length of the span length of the temporary bridge.

Therefore, the branch longitudinal beam 200 is to be located in the lower portion of the pile 100, it is installed for each pile.

The hinge connector 1 210 is installed at the bottom of one end portion of the branch longitudinal beam 200. This is a hinge connector corresponding to the hinge connector 2 (410).

In this case, the hinge connector 1 210 may include a horizontal support plate 211 formed at a bottom of one end portion of the branch longitudinal beam 200; And a protruding support plate 212 formed at a bottom of the horizontal support plate 211 by a hinge hole 213 spaced apart from each other.

Next, the mold support beam 300 is installed between the hinge connector 1 and the hinge connector 2 installed at the branch longitudinal beam 200 and the pile 100.

The mold support beam 300 is largely installed to include the intermediate trunk portion 310 and the end connection portion 320, and is manufactured using a circular steel pipe.

The middle body portion 310 is to ensure a predetermined length to have a length to be installed between the hinge connector 1 210 and the hinge connector 2 (410) using a circular steel pipe,

End connectors 320 are also installed at both ends using circular steel pipes so that the end connectors 320 integrated with the middle body portion 310 can be hinged to the hinge connector 1 210 and the hinge connector 2 410. Done.

The method of integrating the intermediate body 310 and the end connector 320 includes expansion flanges 311 and 321 installed in a horizontal plate shape on the connection end surfaces of the intermediate body 310 and the end connector 320 such as bolts and nuts. It will take a way to connect using a fastener.

In particular, the end connection portion 320 is a hinge portion connected directly to the hinge connector 1 210 and the hinge connector 2 (410) integrated with the circular steel pipe 324, the connection flange 322 installed on the end surface of the circular steel pipe; It comprises a protruding connecting plate 323, the hinge hole 324 is formed on the upper surface of the connecting flange 322.

The hinge hole 324 and the hinge connector 1 (210) and the hinge hole (213,413) of the hinge connector 2 (410) of the end connecting portion 320 is set to communicate with the hinge that the rotation is not constrained by the pin 330 The connection is possible.

In this case, the reason for forming the mold support beam 300 by dividing the intermediate trunk portion 310 and the end connection portion 320 is to enable the length adjustment of the mold support beam 300.

That is, since the mold supporting beam 300 can be reused according to the temporary bridge, the angle of inclination is different depending on the longitudinal extension length of the longitudinal beam 200 of the branch or the extension length of the pile 100. It becomes changeable.

Accordingly, in order to adjust the extension length of the mold support beam 300, the mold support beam 300 is divided into an intermediate body portion 310 and an end connection portion 320, and between the intermediate body portion 310 and the end connection portion 320. Length adjustment means 340 such as a clamp is further installed as shown in FIG.

The length adjusting means 340 has a sleeve 342 is formed on the inner peripheral surface of the support plate 341 is supported and mounted between the intermediate body 310 and the expansion flanges (311, 321) of the end connecting portion 320, respectively End fastening portion 343; The turn-bolt part 344 having both ends fastened to the screw-fastening part of the end fastening part 343 and the rotation handle part 345 fastened to the outer circumferential surface of the turn bolt part 342 between the end fastening part 343. The turning handle portion 345 is rotated to rotate the turn bolt portion 344 so as to adjust the distance of the end fastening portion 343 so that the intermediate body portion 310 connected to the length adjusting means 340, And the length of the end connection portion 320 is to be adjusted.

The length adjusting means 340 basically adjusts the overall extension length of the mold support beam 300, but it can be arranged between the hinge connectors by virtue of the length of the mold support beam 300 being inclined It also has a function to absorb a certain part of manufacturing and construction errors considering the case that the length does not fit in the installation.

Next, the mold 400 is installed on the upper surface of the branch longitudinal beam 200.

The mold 400 may use I-shaped steel as a steel plate girder, but may also use a built-up beam manufactured by welding the upper flange, the abdomen, and the lower flange.

The mold 400 is fixed to the point longitudinal beam 200 by using fasteners such as bolts and nuts. Since the mold is made of steel, longitudinal stretching due to temperature is likely to occur.

Accordingly, when the mold is stretched in the longitudinal direction, when the stretch is constrained, the bending moment due to the arm length of the bending moment to the mold is generated based on the lower portion of the pile embedded in the ground.

In particular, in the pile 100 installed as a circular steel pipe, such a bending moment may be insignificant because the bending moment arm length increases as the height (height) of the temporary bridge increases.

In the present invention, the mold support beam is installed to resist the bending moment generated by supporting the mold and the pile while the mold moves in the longitudinal direction, but the longitudinal beams connected to both ends and the mold are hinged. It is to be connected so as not to be affected by the rotation moment.

Therefore, it can be seen that the mold support beam 300 can effectively support the mold to the pile without being affected by the bending moment caused by the expansion and contraction of the mold 400.

These molds 400 are respectively installed in the branch longitudinal beams 200 installed in the pile 100, and are installed for each pile 100 installed in the transverse direction.

In addition, the mold and the mold may be bound to each other by a cross beam in the transverse direction.

Therefore, the mold 400 is longitudinally supported on the pile by the point longitudinal beam 200 in the pile 100, and the mold supporting beam 300 is able to resist mold longitudinal stretching by the mold support beam 300. Able to know.

Next, by installing a perforated plate on the upper surface of the mold 400, the final bottom plate 500 is completed so that construction of the final temporary bridge can be completed.

In the present invention, since the circular steel pipe is used as the pile 100, a work bench capable of performing necessary work by the worker when installing the branch longitudinal beam 200 and the mold support beam 300 is required.

However, since the outer circumferential surface is formed in a curved steel pipe, it is not easy to mount a general scaffolding pipe.

Accordingly, the present invention proposes a working scaffold structure 600. The work scaffold structure 600 is basically to be mounted on the pile 100, which is a circular steel pipe by the friction force, to form a space in which the worker can work by using a clamp or the like scaffold pipe.

First, the rubber pad 610 inserted into the outer circumferential surface of the circular steel pipe is installed. When the pad 610 is inserted into the circular steel pipe, the friction force between the circular steel pipe and the pad is generated, so that the pad may be attached to the outer circumferential surface of the circular steel pipe.

Next, the inner surface around the circular steel pipe is pressed and fixed to the outer peripheral surface of the pad and the scaffold support 620 on which the working scaffold is mounted; is installed.

The scaffold support 620 may be manufactured in various forms, but the work scaffold installed in the form of a horizontal plate and the support for supporting the work scaffold are assembled by a clamp or the like by a scaffold pipe.

The scaffold support 620 is manufactured to wrap around the circular steel pipe in advance to produce a semi-circular scaffold support 620, in the field is connected to the two semi-circular scaffold support 620 around the circular steel pipe, but The connection part can be seen that the semi-circular scaffold support 620 connected to each other by pressing by the bolt and nut is pressed to the pad 610 to be installed.

Assembly and installation of the semicircular scaffold support 620 by such a frictional force may be possible because large loads do not occur in the work scaffold structure 600, but it is not difficult to manufacture, and the scaffold support 620 is pressed onto the pad. Since it is installed in such a way that it is easy to dismantle without damaging the pile of a circular steel pipe, the working scaffold structure 600 has the best quality.

100: file
110: file coupler
120: pile cap
200: longitudinal longitudinal beam
210: hinge connector 1
300: mold support beam
310: middle body
320: end connection
330: pin 340: length adjusting means
400: mold 410: hinge connector 2
500: base plate 600: scaffolding structure
610: pad 620: scaffold support

Claims (5)

In the hypothesis bridge construction method comprising the step of installing a pile, a mold extending in the longitudinal direction on the upper pile, and installing a bottom plate including a perforated plate on the mold upper,
Between the upper part of the pile and the bottom of the mold is installed a longitudinal portion of the beam extending in both sides with respect to the pile,
One end is hinged to the hinge connector 1 installed on the bottom portion of the longitudinal beam and the other end is also inclined downward to install a mold support beam hinged to the hinge connector 2 installed on the outside of the pile, longitudinal direction of the mold A temporary bridge construction method using a mold support beam for absorbing longitudinal displacement and impact, characterized by allowing the mold support beam to absorb expansion and contraction. According to claim 1, wherein the hinge connector 1 is a horizontal support plate formed on the bottom surface of the longitudinal longitudinal beam end portion; And a protruding support plate having a hinge hole formed on a bottom surface of the horizontal support plate and spaced apart from each other.
Hinge connector 2 is a band support plate formed to surround the outer peripheral surface of the pile; And a hinge support hole formed at one side of the band support plate to be spaced apart from each other, and protruding support plate formed to be spaced apart from each other. According to claim 2, wherein the mold support beam is a middle body portion; End connecting portion is connected to both ends of the intermediate body portion and formed with a hinged hole forming a protruding connecting plate; comprising a hinge hole of the end connecting portion and the hinge hole of the hinge connector 1 and 2 is connected to the pin support beam The construction method for absorbing longitudinal displacement and impact, characterized in that the one end and the other end of the hinge is connected to the branch longitudinal beam and the pile, respectively. [4] The longitudinal displacement and impact of claim 3, wherein a length adjusting means including a clamp is inserted between the intermediate body portion and the end connection portion to adjust the overall length of the mold support beam. Temporary bridge construction method. The method according to any one of claims 1 to 4, wherein the pile is a circular steel pipe to be further provided with a working scaffolding structure for securing a working space in the circular steel pipe, the working scaffolding structure is
A rubber pad inserted into an outer circumferential surface of the round steel pipe;
Temporary bridge construction method that can absorb the longitudinal displacement and impact, characterized in that it comprises a; scaffold support that is fixed to the outer peripheral surface of the pad by pressing the outer peripheral surface of the circular steel pipe is mounted.

Images