KR20200019034A - A Expansion Joint Apparatus for Bridge Structure with a Adjusting Height and Presetting - Google Patents

Abstract

The present invention provides an expansion joint apparatus, which connects a gap of a bridge deck with an expansion structure, whereas being installed at a connection point between slabs of an upper structure of a bridge which extend to connect the bridge such that the vertical height and horizontal interval in constructing a gap is elastically position-adjusted to enhance workability in constructing the bridge and to make it efficient when constructing a gap connection area of the bridge. The present invention provides an expansion joint apparatus for a bridge capable of adjusting the height and controlling the gap at a site, comprising: a pair of sidewall bodies having upper plates engaged with each other across a gap while forming a horizontal surface at an upper part, and formed to be extended in the width direction of an upper structure of the bridge; an extension member positioned between the pair of side wall bodies to support the side wall bodies in a surface contact state, and performing an extension corresponding to a movement between the pair of side wall bodies; a plurality of stud anchors fixedly installed on the side wall bodies and formed to be extended in one side direction; height adjustment units fixedly welded on steel bars arranged on slabs of the upper structure of the bridge and adjusting the vertical level while supporting and fixing the stud anchors to be able to move in a vertical direction and a horizontal direction; and presetting units installed on the upper plates of the pair of side wall bodies and finely controlling the gap spaced left and right based on the extension member.

Description

A Expansion Joint Apparatus for Bridge Structure with a Adjusting Height and Presetting}

The present invention relates to a flexible expansion device for bridges that can be adjusted in height and on-site clearance, and more specifically, the bridge construction by connecting the gap of the bridge top plate in a stretchable structure to elastically adjust the vertical height and left and right intervals of the interlude construction The present invention relates to a bridge joint extension device capable of height adjustment and site clearance adjustment, which can improve the workability of the bridge and efficiently construct the bridge intermittent connection area.

In general, the bridge is composed of a top plate structure which is raised horizontally on the upper side along with a plurality of bridges erected on the ground, and these top plate structures include contraction and expansion due to temperature change in winter / summer, dry shrinkage due to the age of concrete In order to accommodate the movement of the upper structure of the bridge due to creep, etc., it is constructed to form the expansion joint to smoothly accommodate the movement and rotation of the upper structure by live load.

The expansion joints forming the connection gap between the upper plate structures of the bridges are installed with expansion joints for the purpose of smooth vehicle traffic by compensating the clearance between the bridges due to the smooth expansion of the bridges.

As a conventional technique disclosed in connection with the expansion joint as described above, the Republic of Korea Utility Model Registration No. 417259 (2006.05.18.) In the expansion joint device, interlocking with each other at a predetermined interval at the joint of the bridge deck A pair of upper plates, support means for fixing the upper plate, and a "V" shaped fixing groove in which the reinforcing bars are seated / welded on the upper surface to form a plurality of anchors fixed in the longitudinal direction on the side of the support means. It is known that the expansion joint device for the bridge is easy to weld because the reinforcing bar is fixed, regardless of the diameter of the rebar as it is configured.

In addition, Korean Patent No. 1744056 (2017.05.31.) Includes a pair of side plates; A pair of top plates respectively provided on the upper ends of the pair of side plates by welding, the upper surfaces having a plurality of grooves and protrusions; A plurality of stud anchors coupled to outer side surfaces of the pair of side plates; Between the pair of side plates, ribs are formed parallel to the inner side of the side wall so as to face each other with the side wall of the first body formed in a 'M' shape, and the side wall of the first body and the lower end of the rib are coupled to each other. Sealed waterproof rubber plate that is detachably coupled by the custom coupling of the groove portion and the engaging protrusion to perform the stretching and waterproofing function; The nut is inserted between the side wall and the rib of the hermetic waterproof rubber plate in the longitudinal direction of the hermetic waterproof rubber plate, and bolts provided on the outer wall penetrate through the coupling hole formed in the side wall and the side plate to protrude outward. A pair of poles to fix it; The sine wave is coupled to cover the hermetic waterproof rubber plate so as not to be exposed to the outside, and the side walls of the second main body having a 'M' shape are connected to each other to stretch and act upon impact transmission from the outside of the side wall to the inside. It is known that the expansion joint device for bridges that can improve the bending rigidity of the rubber plate, including a; connecting cap to be provided as a shape holder for maintaining the shape of the side wall of the second body by forming a bent shape .

However, in the case of the prior art described above, while the product of the expansion joint is uniformly standardized and commercialized, the upper structure of the bridge has a different thickness of the slab depending on the type, and thus the expansion joint is installed in a state where the rebar position is different. Since the height of the concrete structure at the joint part of the upper structure cannot be fixed because of crushing, the reinforcement position is always fixed on the stud anchor so that it is horizontal between the vehicle running surface and the expansion joint due to unbalanced construction. Inconsistent construction results in poor construction such as stepping, deterioration of driving performance such as rattling while driving, and high maintenance costs due to damage of joints of upper structures due to stepped contact load with continuous vehicle driving. There was a problem.

In addition, in the case of the prior art described above, there is a clearance adjustment device, but only serves to set and fix a gap between a pair of upper plate plates according to the designed clearance, and it is not easy to adjust the clearance required during field construction. Even if it is unavoidable to adjust the clearance, there is a difficulty in the field work due to the removal of the fixed clearance adjustment device and the change of position and rotation of the top, bottom, left and right plates between the top plates, and the failure of the construction of the expansion joint. There was a problem that will lead to construction and reduced life.

KR Utility Model Publication No. 20-0417259 (2006.05.18.) KR Patent Publication No. 10-1744056 (2017.05.31.)

The present invention is to solve the above problems, it is configured to precisely install the upper and lower levels of the expansion joint at the expansion and contraction point to match the horizontal level with the vehicle running surface and at the same time maintain the construction of the bridge The purpose of the present invention is to provide a new expansion joint for bridges that can be adjusted in height and site clearance to minimize maintenance costs.

In addition, the present invention is to adjust the height of the expansion joint device in accordance with the site conditions in the state that is not constrained in the horizontal direction and the height in the field, as well as the height adjustment and the site clearance adjustment to increase the construction quality of the bridge It is to provide a expansion joint device for.

The expansion joint device for height adjustment and site clearance that is proposed by the present invention is installed in the connection point between the slab and the slab of the bridge upper structure in the expansion joint device for elastically connecting the bridge, forming a horizontal plane on the top A pair of side wall bodies which form a top plate spaced from each other and extend in a width direction of the bridge superstructure; An elastic member positioned between the pair of side wall bodies to support the side wall body in a surface contact state and to expand and contract in response to flow between the pair of side wall bodies; A plurality of stud anchors fixed on the side wall body and extending in one side direction; A height adjusting unit which is welded and fixed on the rebar disposed on the slab of the bridge superstructure and adjusts the upper and lower levels while supporting the stud anchor so as to be movable in the vertical and horizontal directions; And a presetting unit installed on the upper plate of the pair of side wall bodies and finely adjusting the clearance spaced left and right with respect to the elastic member.

The height adjustment unit is fixed to the reinforcing bar and the body coupling to form an anchor guide hole and bolt guide hole for adjusting the vertical position of the stud anchor, and the stud anchor installed on the bolt guide hole of the body coupling It constitutes a support bolt means for supporting and fixing in the adjusted position.

The preset unit includes a pair of fixed vertical members each installed on the upper plate of the pair of side wall bodies and extending in a vertical direction, and screwed onto the pair of fixed vertical members, based on a bolt head. And a adjusting bolt means formed to form screws in different directions by dividing the left and right sections, and extending in the lateral direction, wherein the adjusting bolt means extends outwardly on the bolt head to be operable from an operator. It is provided.

According to the present invention, the expansion joint for the bridge that can adjust the height and the field clearance can be adjusted to precisely install the upper and lower levels of the stud anchor for connection of the side wall body, and can be configured to adjust the clearance between the bridge, site conditions It is possible to extend the life of the bridge by preventing the step construction at the bridge's new connection point by improving the construction efficiency and construction quality of the bridge by adjusting the elasticity and finely. The effect is to reduce the maintenance cost efficiently.

1 is a cross-sectional view showing an embodiment according to the present invention.
Figure 2 is a side sectional view showing a height adjustment unit in one embodiment according to the present invention.
Figure 3 is a front view showing a preset unit in one embodiment according to the present invention.

The present invention provides an expansion joint device for elastically connecting bridges by installing at a connection point between the slab and the slab of the bridge upper structure, to form an upper plate to form a horizontal plane on the top and interlock with each other, the bridge upper structure of the bridge A pair of side wall bodies extending in the width direction; An elastic member positioned between the pair of side wall bodies to support the side wall body in a surface contact state and to expand and contract in response to flow between the pair of side wall bodies; A plurality of stud anchors fixed on the side wall body and extending in one side direction; A height adjusting unit which is welded and fixed on the rebar disposed on the slab of the bridge superstructure and adjusts the upper and lower levels while supporting the stud anchor so as to be movable in the vertical and horizontal directions; It describes the expansion joint device for the height adjustment and the site clearance including a; a presetting unit which is installed on the upper plate of the pair of side wall body and finely adjusted the clearance spaced to the left and right relative to the expansion member; It is characterized by the configuration.

Next, a preferred embodiment of the expansion joint device for bridges capable of height adjustment and site-to-site adjustment according to the present invention will be described in detail with reference to the drawings.

First, the embodiment of the expansion joint device for the bridge height adjustment and site clearance adjustment according to the present invention is installed at the connection point between the slab (S) and the slab (S) of the bridge superstructure bridge as shown in FIG. In the expansion joint device for elastically connecting, the side wall body 10, the elastic member 20, the stud anchor 30, the height adjustment unit 40 and the presetting unit 50 is made of .

In the connection point between the slab (S) in the crushing shaping the installation groove (h) having an area of a predetermined width and depth, respectively, a plurality of in the longitudinal direction and the width direction of the slab (S) in the installation groove (h) Two main reinforcing bars 5 and reinforcing bars 7 are disposed.

The side wall body 10 is a metallic structure positioned to face each other at the boundary portions spaced apart between the slab (S), the two forms a pair and forms a symmetrical structure to the left and right.

The side wall body 10 extends in the width direction of the bridge upper structure. That is, the side wall body 10 is arranged in a plurality in the width direction of the bridge upper structure in succession, the both ends of the side wall body 10, the connecting flange 17 which can be coupled to face each other in a surface contact state and The fastening means 18 is provided.

Although not shown in the drawing, in the case of the segmental expansion joint device, the connection region in which the connection flange 17 of the side wall body 10 is formed is connected to each other in correspondence with the expansion member 20, but blocks water from flowing in. It is preferable to have a waterproof coupling for

As shown in FIG. 1, the side wall body 10 includes a side wall plate 15 vertically extending to form an upper side wall facing each other at a connection point between the slabs S of the bridge upper structure, and the side wall plate. The upper plate 11 is provided with an upper plate 11 extending in the transverse direction so as to form the same horizontal plane as the upper surface of the bridge superstructure.

The upper plate 11 is formed such that the left and right pairs are engaged with each other with a gap therebetween.

In the drawing, the side wall body 10 has been described by applying a finger type having a “T” cross-sectional shape, but the side wall body 10 of the present invention is not limited thereto. It is possible to configure by applying a variety of forms (such as cell type).

As shown in FIG. 1, the elastic member 20 is installed in a spaced space at a connection point between the slabs S of the bridge upper structure to be positioned between the pair of side wall bodies 10.

The elastic member 20 supports the pair of side wall bodies 10 in a surface contact state, and prevents rain and dirt from falling on the road surface of the bridge and a pair of the side wall bodies 10 at the same time. It functions to stretch in response to the flow between.

The elastic member 20 is made of a predetermined elasticity and elastic material such as rubber or urethane foam.

The stud anchor 30 is fixedly installed so as to be integral with the side wall body 10 and is directed toward the main reinforcing bar 5 or the reinforcing bar 7 disposed in the installation groove h of the slab S of the bridge upper structure. It extends in one side direction or transverse direction.

The stud anchor 30 is configured to have a plurality of spaced apart from each other in the width direction of the side wall body (10).

The height adjustment unit 40 has a function of adjusting the mounting position of the stud anchor 30 with respect to the main reinforcing bars (5) or reinforcing bars (7) disposed in the installation groove (h) of the bridge upper structure slab (S) To perform.

The height adjustment unit 40 is configured to weld fixed on the reinforcing bars, that is, the main reinforcing bars (5) or reinforcing bars (7) disposed on the slab (S) of the bridge upper structure, as shown in FIG.

The height adjustment unit 40 can adjust the upper and lower levels while receiving the stud anchor 30 to the inside. In other words, the height adjustment unit 40 accommodates the stud anchor 30 to support and fix the vertical movement in the vertical and horizontal directions.

The height adjustment unit 40 is welded and fixed on the reinforcement of the bridge upper structure and the body coupling 41 and the coupling coupling on the body coupling 41 to form the stud anchor 30 to be accommodated By supporting the stud anchor 30 to form a support bolt means 45 for forming the adjustable up and down level of the stud anchor 30.

As shown in FIG. 2, the height adjustment unit 40 has a structure in which the support bolt means 45 for supporting and fixing the stud anchor 30 on the body coupling 41 forms a horizontal coupling method. , The height adjustment unit 40 comprises a body coupling 41 and the support bolt means 45 but the coupling method of the support bolt means 45 is configured in a horizontal coupling method.

The body coupling 41 is fixedly installed on the reinforcing bar, and forms an anchor guide hole 42 and a bolt guide hole 43 for adjusting the vertical position of the stud anchor 30. That is, the body coupling 41 is formed to penetrate in the lateral direction corresponding to the stud anchor 30, the anchor guide hole 42 which can guide the vertical movement in the vertical straight direction of the stud anchor (30) And bolts which are formed to penetrate through the anchor guide hole 42 in a right direction and support the fixing bolt means 45 for supporting the stud anchors 30 and extend in the vertical direction. The guide hole 43 is provided.

In the above, the vertical extension length of the anchor guide hole 42 and the bolt guide hole 43 is preferably formed in the same length.

The support bolt means 45 is installed in the transverse direction on the bolt guide hole 43 of the body coupling 41.

The support bolt means 45 supports and fixes the stud anchor 30, and is movable up and down vertically on the bolt guide hole 43 to adjust the stud anchor 30 and adjust the stud anchor 30. It is installed to fix the support in the adjusted position.

The support bolt means 45 is screwed to one end of the bolt member 45a together with the bolt member 45a extending in the lateral direction, and a nut member capable of contacting and supporting the outer surface of the body coupling 41. 45b is provided.

The preset unit 50 performs a function of finely adjusting the flow gap spaced from the left and right with respect to the pair of side wall bodies 10 with respect to the stretchable member 20.

As shown in FIG. 1, the preset unit 50 has a structure installed on the upper plate 11 of the pair of side wall bodies 10, and includes a fixed vertical member 51 and an adjusting bolt means 53. Consists of.

The fixed vertical members 51 are formed on the upper plate 11 of the pair of side wall bodies 10 arranged to the left and right to form a pair.

The fixed vertical member 51 extends upward in the vertical direction with respect to the upper plate 11. That is, the fixed vertical member 51 is fixed to the lower end is installed on the upper plate 11, the upper side by connecting the adjustment bolt means 53 is fixed.

The adjusting bolt means 53 is formed to extend in the lateral direction to connect the pair of the fixed vertical member 51, is screwed or fixed to the fixed vertical member 51.

The adjusting bolt means 53 is composed of a bolt head 54 and a screw rod 55 to distinguish the left and right sections of the screw rod 55 on the basis of one bolt head 54, the screw rod 55 ) Screws are formed in different directions, i.e., left screws on the left side of the bolt head 54, and right screws on the right side.

Since the adjusting bolt means 53 is provided with a handle member 57 extending outward on the bolt head 54 so as to be operable from the operator, it is possible to facilitate the rotation operation of the operator.

As shown in FIG. 3, the adjusting bolt means 53 is formed integrally with the bolt head 54 and the left and right screw rods 55. That is, since the female screw hole 52 is formed on the fixed vertical member 51, and the adjusting bolt means 53 is screwed onto the female thread hole 52 of the fixed vertical member 51, The fixed vertical member 51 linearly moves left and right according to the rotational direction of the bolt head 54.

That is, according to the expansion joint device for the height adjustment and the field clearance adjustment according to the present invention configured as described above can be installed to precisely adjust the upper and lower levels of the stud anchor for the connection of the side wall body and to adjust the clearance between the bridges It is possible to improve the construction efficiency and construction quality of the bridge by flexibly fine-tuning according to the site conditions, and to improve the running performance of the bridge, and to prevent the construction of the step at the new connection point of the bridge. In addition to this, it is possible to efficiently reduce maintenance costs.

In the above description of the preferred embodiment of the expansion joint device for bridge height adjustment and site clearance adjustment according to the present invention, the present invention is not limited to this and various modifications within the scope of the claims and the specification and the accompanying drawings. Can be carried out, and this also belongs to the scope of the present invention.

10 side wall body 11: upper plate
15: side plate 17: connection flange 18: fastening means
20: stretching member 30: stud anchor 40: height adjustment unit
41 body coupling 42 anchor guide 43 bolt guide
45 support bolt means 45a bolt member 45b nut member
50: preset unit 51: fixed vertical member
52: female thread 53: adjusting bolt means 54: bolt head
55: screw rod 57: handle member
S: Slab h: Installation groove

Claims (3)

In the expansion joint device installed in the connection point between the slab and the slab of the bridge superstructure to connect the bridge flexibly,
A pair of side wall bodies formed in a horizontal plane on the top thereof to form a top plate engaged with each other with a gap therebetween, and extending in a width direction of the bridge upper structure;
An elastic member positioned between the pair of side wall bodies to support the side wall body in a surface contact state and to expand and contract in response to flow between the pair of side wall bodies;
A plurality of stud anchors fixed on the side wall body and extending in one side direction;
A height adjusting unit which is welded and fixed on the rebar disposed on the slab of the bridge superstructure and adjusts the upper and lower levels while supporting the stud anchor so as to be movable in the vertical and horizontal directions;
And a presetting unit installed on an upper plate of the pair of side wall bodies and finely adjusting the clearance spaced from the left and right with respect to the expansion member.
The method according to claim 1,
The height adjustment unit is fixed to the reinforcing bar and the body coupling to form an anchor guide hole and bolt guide hole for the vertical position adjustment of the stud anchor, and the stud guide installed on the bolt guide hole of the body coupling An extension joint for a bridge capable of height adjustment and site clearance adjustment comprising a support bolt means for supporting and fixing the anchor in the adjusted position.
The method according to claim 1,
The preset unit is a pair of fixed vertical members which are respectively installed on the upper plate of the pair of side wall body and is formed extending in the vertical direction, screwed on the pair of fixed vertical members, but the bolt head It includes a adjusting bolt means for forming a screw in different directions by dividing the left and right sections as a reference and extending in the transverse direction,
The adjustment bolt means for the expansion and expansion of the bridge including the handle member which is formed to be operable from the operator extending outward on the bolt head and the site can be adjusted for expansion joints.

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