KR20100037917A

KR20100037917A - Expansion joint

Info

Publication number: KR20100037917A
Application number: KR1020080097261A
Authority: KR
Inventors: 손홍창; 박진우; 강희종; 김선태
Original assignee: 손홍창
Priority date: 2008-10-02
Filing date: 2008-10-02
Publication date: 2010-04-12

Abstract

The present invention can minimize the inflow of rainwater or various foreign substances to reduce the maintenance cost due to corrosion or damage of the structure, easy construction and extend the life of the structure, so only damaged parts need to be replaced during repair In addition to reducing costs, the present invention relates to an expansion joint that can be stably integrated with a structure by increasing the contact area with the structure.

The main configuration of the present invention is a support is formed to be spaced apart from each other to face each other, the support wing is formed to protrude to the lower side of the support fixed to the structure, the support means formed so that the connecting portion connecting between the support bend toward the upper direction and; Is coupled to the support is supported, both sides are open so as to communicate, the upper surface and the lower surface is formed to be bent toward the lower direction, the expansion and contraction means of the hollow shape formed at least one coupling groove on one side of the outer surface; And an angle coupled to the coupling groove to be placed on the expansion means, and closing the gap. This includes.

Expansion joint, structure, bridge, support means, expansion means, angle, coupling wings, protrusion

Description

Expansion joints {EXPANSION JOINT}

In general, structures such as bridges are subjected to deformation stresses caused by various causes such as temperature changes, creep and shrinkage, construction errors, loading loads, earthquakes and ground subsidence.

If the stress is constrained without being released, there is a risk of cracking and damage to the structure. Therefore, when the structure is constructed, there is a joint gap, which is a gap that is spaced at regular intervals, and there is a separate expansion joint in the joint gap. The device is installed to close the joint gap while smoothly accommodating the dynamic behavior of the structure.

For example, when the structure is a bridge, the bridge is composed of a plurality of bridges at the bottom and a plurality of tops that are seated on the top of the bridges to form a road, and the top plate and the top plate is connected to the top plate and smoothly the dynamic behavior of both tops. The gaps are provided with appropriate clearance widths to accommodate them.

In addition, by connecting and closing the joint gap in a horizontal direction so that the vehicle running on the upper side can run smoothly, rainwater or various foreign substances flow into and fall through the joint gap to contaminate or corrode the lower facilities of the bridge. Flexible expansion joints are installed in the gaps of the joints to prevent them.

Expansion joints have a direct impact on the safety and durability of the structure, and because of the highest damage and replacement frequency in the overall structure of the structure, it should basically be able to provide a complete and durable function of expansion and sealing. It should be excellent in resistance to ultraviolet rays or various chemicals when exposed to the outside, and it should be possible to reduce the traffic control when repairing.

Expansion joints are mainly divided into rubber type and steel type, and most of them are provided with anchor bolts integrally and fixed to the structures on both sides of the joint gap through the anchor bolts, and weld the anchor bolts to each of the rebars planted in the structure. In addition, the non-shrinkage or general concrete is poured to cure the anchor bolt to cure it, so that it is firmly fixed. However, the process of welding the anchor bolt and curing the concrete one by one requires a lot of labor and time. there was.

An object of the present invention is to provide an expansion joint device that can reduce the maintenance costs due to corrosion or damage of the structure by minimizing the inflow of rainwater or various foreign matters.

Another object of the present invention is to provide an expansion joint device that can reduce the cost because the construction is simple and can extend the life of the structure, and only replace damaged parts during repair.

Another object of the present invention is to provide an expansion joint device which can be stably integrated with a structure by increasing the contact area with the structure.

The expansion joint device installed in the joint gap of the structure according to the present invention, the support is formed to be spaced apart from each other to face each other, the support wing is formed to protrude to the lower side of the support fixed to the structure, connecting the connection between the support Support means formed to bend toward the upper direction; Is coupled to the support is supported, both sides are open so as to communicate, the upper surface and the lower surface is formed to be bent toward the lower direction, the expansion and contraction means of the hollow shape formed at least one coupling groove on one side of the outer surface; And an angle coupled to the coupling groove to be placed on the expansion means, and closing the gap. This includes.

Preferably, the outer surface of the support wing, characterized in that one or more first projections are formed in a direction perpendicular to the direction of the support wing.

Preferably, the outer surface of the expansion means is projected in the direction of the structure, characterized in that it comprises two or more coupling wings that are coupled to the structure to secure the expansion means to the structure.

Preferably, the outer surface of the coupling blade, characterized in that one or more second projections are formed in a direction perpendicular to the direction of the projection of the coupling blade.

The expansion joint device of the present invention has an advantage of reducing the maintenance cost due to corrosion or damage of the structure by minimizing the inflow of rainwater or various foreign matters.

In addition, the construction is easy and can extend the life of the structure, there is an advantage that can be reduced because only the damaged parts need to be replaced during repair.

In addition, there is an advantage that can be stably integrated with the structure by increasing the contact area with the structure.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

1 is an exploded view of the expansion joint according to an embodiment of the present invention, Figure 2 is an assembly view of the expansion joint according to an embodiment of the present invention.

As shown, the expansion joint according to an embodiment of the present invention is largely configured to include the support means 10, the expansion means 20 and the angle 30.

The support means 10 is disposed below the expansion joint device 100 according to the embodiment of the present invention. The support means 10 is formed with a support 12 spaced apart from each other so as to face each other, a support wing 14 is formed to protrude to the lower side of the support 12 to be fixed to the structure, connecting between the support 12 The connecting portion 16 is formed to be bent toward the upper direction is formed so that it can be stretched together when the stretching means 20 described below.

At this time, the support wing 14 is preferably at least two or more support wings 14 protrude in a direction opposite to each other for the stable fixing of the support means (10). One or more first protrusions 14a are formed on the outer surface of the support wing 14 in a direction perpendicular to the projecting direction of the support wing 14 to increase the contact area with the structure 200, thereby supporting the support wing 14. ) To make the fixing force stronger and to be integrated with the structure 200 stably. In addition, the first protrusion 14a prevents rainwater or various foreign substances from flowing along the support wings 14, thereby reducing maintenance costs by reducing corrosion or damage to the structure 200.

Stretching means 20 is formed in a hollow shape, both sides are open to communicate with each other, the upper surface and the lower surface is bent toward the lower direction, that is formed in a U shape. In addition, at least one coupling groove 22 is formed at one side of the outer surface, and a support mounting groove 26 is formed at the lower side of the outer surface such that the support 12 is coupled thereto.

Thus, the expansion means 20 formed in a hollow U shape can be flexibly stretched and can be preferably applied to other structures besides tunnels or underground roadways. Of course, the upper and lower surfaces may be formed in a flat shape, but in this case, the upper surface flatness may be applied to a sidewalk bridge, a stadium, and the like, which should be considered more important.

On the other hand, like the support blades 14 of the above-described support means 10, the coupling blades 24 formed on the expansion means 20 are two or more numbers toward the structure 200 on the other side of the outer surface of the expansion means 20. Is protruded, it is coupled to the structure 200 to secure the expansion means 20 to the structure 200. In addition, one or two or more second protrusions 24a are formed on the outer surface of the coupling blade 24 in a direction perpendicular to the direction in which the coupling blade 24 protrudes, such as the support blades 14, so that the coupling blades 24 are formed with the structure 200. By increasing the contact area it is to be stably integrated with the structure 200. In addition, the coupling blade 24 is to prevent the rainwater or various foreign matters are introduced into the deeper space when the rainwater or various foreign substances are introduced, the rainwater or various foreign matters along the coupling wings 24 by the second projection (24a). By minimizing the inflow to reduce the corrosion or damage of the structure 200 it is possible to reduce the maintenance cost.

Angle 30 is coupled to the coupling groove 22 is placed on the expansion means 20, and closes the gap. Since the angle 30 is a well-known technology, it will not be described in detail, but is preferably made of stainless steel or steel to have corrosion resistance from calcium chloride and other chemical components used in winter snow removal.

3 is an installation state diagram of the expansion joint according to an embodiment of the present invention. Here, the expansion joint according to an embodiment of the present invention can be used in various structures, hereinafter will be described by taking an example that is applied to the gap of the bridge.

As shown in FIG. 3, the expansion joint according to an embodiment of the present invention is constructed in a structure 200, that is, a bridge.

The bridge 200 is composed of concrete 210, ascon 220 and reinforcing bars 230, etc., the expansion joint device 100 according to an embodiment of the present invention is the upper plate side forming a road among the bridge 200 The construction is coupled to the gap of the support means 10 of the support means 10 and the coupling wing 24 of the expansion means 20 is fixed in the bridge 200, the angle 30 is exposed to the outside.

A bolt B, for example, a start bolt is connected to the reinforcing bar 230 in the bridge 200 to support the expansion joint 100.

In the case of the bridge 200 is installed between the upper plate (not shown), which is the upper structure of the bridge 200 and the pier (not shown) of the lower structure to support the top plate to mitigate the impact applied to the upper structure of the bridge 200 Breakage of the connection of the pedestal device (not shown) often occurs.

Such breakage is often caused by rain or foreign matter, such as air introduced into the gap where the expansion joint is installed.

Therefore, the expansion joint device 100 according to an embodiment of the present invention using the coupling blade 24 and the second protrusion 24a formed in the expansion means 20, rainwater or foreign matter introduced into the gap. To prevent the first, and to prevent the secondary by using the support wing 14 and the first projection (14a) formed on the support means 10 to minimize the inflow of rainwater or various foreign matter bridge 200 It can reduce the maintenance cost due to corrosion or damage In addition, there is an advantage that can extend the life of the bridge 200 accordingly.

In addition, even when repairing due to the damage of the expansion joint device 100, that is, only one of the support means 10 or expansion means 20, the angle 30, the need to replace any one has the advantage of reducing the cost will be.

It is to be understood that the present invention is not limited to the above-described preferred embodiments but may be practiced in various ways without departing from the spirit of the present invention. If you grow up, you can easily understand. If the implementation by such improvement, change, replacement or addition falls within the scope of the appended claims below, the technical idea is also regarded as belonging to the present invention.

1 is an exploded view of the expansion joint according to an embodiment of the present invention.

2 is an assembly view of the expansion joint according to an embodiment of the present invention.

Figure 3 is an installation state of the expansion joint according to an embodiment of the present invention.

10: support means 12: support stand

14: support wing 14a: first projection

16: connection part 20: expansion means

22: coupling groove 24: coupling wings

24a: 2nd projection 26: support base coupling groove

30: angle 100: expansion joint

200: structure 210: concrete

220: Ascon 230: Rebar

B: bolt

Claims

In the expansion joint installed in the gap of the structure,

A support means formed to be spaced apart from each other by a predetermined distance to face each other, a support wing protruding from the lower side of the support to be fixed to the structure, and a support portion formed to bend toward the upper direction to connect the support members;

It is coupled to the support and supported, both sides are open so as to communicate, the upper surface and the lower surface is formed to be bent toward the lower direction, the expansion and contraction means of the hollow shape formed with two or more coupling grooves on one side of the outer surface; And

An angle coupled to the coupling groove and mounted on the expansion means, for closing the joint gap;

Expansion joint comprising a.

The outer surface of claim 1, wherein

Stretch joint device characterized in that one or more first projections are formed in a direction perpendicular to the supporting direction of the support blade.

According to claim 1 or 2, Stretching characterized in that it comprises two or more coupling wings protruding toward the structure on the other side of the outer surface of the expansion means, coupled to the structure to secure the expansion means to the structure Joints.

According to claim 3, wherein the outer surface of the coupling blade,

Stretch joint device characterized in that one or two or more second projections are formed in a direction perpendicular to the projecting direction of the coupling blade.