KR20120066723A

KR20120066723A - Drainage rubber structure for bridge expansion joint

Info

Publication number: KR20120066723A
Application number: KR1020100117212A
Authority: KR
Inventors: 손해원
Original assignee: (주) 국제이엔씨
Priority date: 2010-11-24
Filing date: 2010-11-24
Publication date: 2012-06-25

Abstract

PURPOSE: A drainage rubber structure for a bridge expansion joint is provided to improve endurance capability against fatique due to repetitive expansion by strengthening fatique stress generating from the expansion due to deformation and displacement of a bridge. CONSTITUTION: A drainage rubber structure for a bridge expansion joint(100) is formed by vulcanizing and adhering a mesh locating between pads(110). A horizontal steel wire(131) and a vertical steel wire of which thickness is respectively 0.42mm are woven to a lattice type to form the mesh. Each pad has the thickness of 2.5t.

Description

Drainage rubber structure for bridge expansion joint

The present invention relates to a stretch pad of a bridge expansion joint device, and more particularly, to shorten the service life due to breakage such as tearing caused by hardening caused by exposure to sunlight or natural conditions. The present invention relates to an invention that minimizes the number of bridge maintenance and eliminates the cost of maintenance.

In general, a general bridge through which a heavy vehicle passes and a railway bridge through which a train passes receives a lot of impact loads according to weight and movement, and prevents damage to the bridge due to displacement and deformation due to the weight and impact load. At the same time, the expansion joint is a device that enables safe driving.

The expansion joint is composed of a plurality of components, of which the prior art of the rubber material drainage system, which is a component in preparation for the present invention is as follows.

The rubber material drainage system is formed in various forms by varying the structure of the rubber material drainage system according to the structure of the joint constituting the expansion joint device.

The above-mentioned rubber material drainage system has a main purpose of collecting and draining rainwater flowing between expansion joints in one place, and is made to be stretched and made in response to deformation and displacement of a general bridge or railway bridge.

The rubber material drainage system of the conventional expansion joint device exhibiting the above functions is manufactured only by rubber, so that the elastic deformation is excellent, but the curing is gradually increased when exposed to sunlight or natural conditions, which is one of the characteristics of rubber. As a result, breakage, such as cracking, is progressed, and the cracking phenomenon is easily accelerated because the drainage system is made of pure rubber material.

Utility model registration No. 20-164427 "Bridge expansion joint" for the drainage rubber of the expansion joint device for solving the above problems has been conceived.

The expansion joint for the bridge of the pre-registration design is a reinforcement made of a tire cord yarn, which is a special fiber material with a strong tensile force, is formed at regular intervals along the width direction.

As described above, the rubber for drainage of expansion joints including a reinforcement made of tire cord yarn, which is a special textile material with strong tensile strength, has an improved durability and does not immediately lose its function even if it disappears due to hardening. On the other hand, since the reinforcement made of tire cord yarn, which is a special fiber material with strong tensile strength, is formed only in the width direction, it has a disadvantage in that cracking occurs along a grain.

When the rubber for drainage of the expansion joint is combined with a general vehicle bridge, there is no great difficulty in maintenance of the drainage rubber, but it costs a lot, and the rubber for drainage of the steel bridge on which the train runs is damaged and maintained. The maintenance work is complicated and time consuming.

In other words, in particular, the train tracks are placed on wooden or concrete sleepers, and the gravel supports the sleepers, alleviates the impact, and plays a role of holding them in a fixed position.

When the sleeper is pressed by the weight of the train, the weight of the train is distributed widely through the gravel, while the gravel is holding the sleeper by the frictional force, and thus the gravel with the large frictional force is used.

As described above, sleepers and gravel are laid on railroad tracks, and the silence and gravel are laid on railroad bridges.

Therefore, in particular, when the rubber for drainage of a new expansion joint of a railway bridge is damaged and loses its function, there is a cumbersome work to perform maintenance work after removing gravel and silence for maintenance. There is a problem that excessive maintenance costs, such as a large number of manpower should be put into the situation is a situation that requires a product that can improve the durability of the rubber for drainage of railway bridge expansion joints.

The present invention solves the shortcomings of the rubber drainage system constituting the expansion joint of the conventional bridge, the purpose of the expansion of the expansion joint to receive the displacement and deformation while the elastic action corresponding to the displacement and deformation installed in the bridge It is vulcanized and bonded between the pads and the pads by thin meshes in which the horizontal steel wires and the vertical steel wires are inverted in the lattice shape to improve durability, and the fatigue stress against the stretching action caused by the deformation and displacement of the bridge is enhanced. As well as improving the ability to withstand the fatigue caused by repeated stretching, it maintains its own shape within the elastic range, improves the holding force by tensile force, reduces the fatigue by bending, and improves durability, thereby exposing the pad to natural conditions. Even though cracking occurs, the horizontal and vertical steel wires constituting the mesh maintain the tension of up, down, left, and right. Not only can it be used for a long time without malfunction of drainage rubber, but it is also suitable for use as a drainage rubber for railway bridges with complicated maintenance work, and the durability of drainage rubber increases the replacement cycle. It is to provide a rubber structure for drainage of expansion joints for railway bridges that can increase the market competitiveness by securing the reliability of drainage rubber from consumers as well as reducing the cost of maintaining the railway bridge.

The present invention for achieving the above object, the length corresponding to the length of the joint 10 is installed anchored to the buried bar is fixed to the reinforcement of the frame of the upper sleeve (1) to be installed on top of the piers At the same time, the expansion and contraction is made smoothly according to the displacement and deformation of the upper sleeve 1 and the drainage rubber installed under the joint 10 to collect and drain the rainwater flowing between the joints 10. In

Drained rubber 100 having a total thickness of 5 t is manufactured, and the horizontal mesh 131 and the vertical steel line 132, each having a thickness of 0.42 mm, are inverted into a lattice, and the mesh 130 having a thickness of 2.5 t, respectively. It is achieved by a rubber for drainage of a general bridge, in particular, a railway bridge expansion joint device, characterized in that it is vulcanized and bonded between the pad 110 and the pad 120 having a.

The drainage rubber structure of the expansion joint device for bridges of the present invention described above is installed on the bridge and stretched to correspond to the displacement and deformation while the horizontal steel wire 131 to the rubber 100 for expansion joints receiving displacement and deformation. ) And the longitudinal steel wire 132 is a grid-inverted mesh 130 is vulcanized between the pad 110 and the pad 120 to improve the durability, the elastic action caused by the deformation and displacement of the bridge As the fatigue stress is enhanced, the ability to withstand the fatigue caused by repeated expansion and contraction is not only improved, but also maintains its own shape within the elastic range, improves the support force by tensile force, reduces fatigue by bending, and improves durability. Accordingly, even when exposed to natural conditions, the pads 110 and 120 are hardened to cause cracking, and the horizontal steel wire 131 and the vertical steel wire 132 constituting the mesh 130 retain tensile force in the up, down, left, and right directions. Not only can it be used for a long time without losing the function of the drainage rubber 100, but it is also suitable for use as a drainage rubber of bridges, especially railway bridges, where maintenance work is complicated, and at the same time, durability of the drainage rubber 100 is improved. The effect is to increase the replacement cycle is a very useful invention that can increase the market competitiveness by securing the reliability of the drainage rubber from consumers, as well as reducing the cost of the railway bridge maintenance.

1 is an exemplary view of a rubber for drainage of the expansion joint device for a railway bridge according to the present invention.
Figure 2 is an illustration of the expansion joint device is applied rubber for drainage expansion joint device for railway bridge according to the present invention.
Figure 3 is another exemplary embodiment of the expansion joint device is applied to the rubber for drainage expansion joint device for railway bridge according to the present invention.

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

As shown in Figures 1 to 3, the rubber for drainage of the expansion joint for railway bridges according to the present invention is provided with anchor bars fixed to the reinforcing bars of the upper sleeve (1), which is installed by being mounted on top of the bridge. It is installed under the joint 10.

The drainage rubber 10 has a pad 110 and a pad each having a thickness of 2.5 tons, each of which has a thickness of 0.42 mm in which the horizontal steel wire 131 and the vertical steel wire 132 are inverted in a lattice shape. Located between the 120 and vulcanized adhesive is made.

Drainage rubber 100 configured as described above is to be installed on the bridge as shown in FIG.

When installing the drainage rubber 100 to the bridge, first select the appropriate drainage rubber 100 according to the configuration of the joint 10 is installed as the upper sleeve (1) of the bridge.

2 is a type for fixing the upper sleeve (1) of the bridge, Figure 3 is a drainage rubber 100 of the type for fixing to the joint 10 constituting the expansion joint device.

First, the drainage rubber 100 fixed to the upper sleeve 1 is cut to fit the installation position in a flat shape.

Both sides of the cut-out drainage rubber 100 are fixed to the fixing bolt 20 including the washer 30 in a state where both upper sleeves 1 are positioned on the side as shown in FIG. 2.

The drainage rubber 100 installed as described above is treated with drainage to one place by receiving the rainwater flowing in between the joints 10 in the form of alphabet.

Drainage rubber 100 is installed as described above is the vulcanized wire mesh 130 vulcanized by the horizontal steel wire 131 and the vertical steel wire 132 in the lattice form between the pad 110 and the pad 120 Since the fatigue stress against the stretching action due to the displacement and deformation caused by the temperature change and the driving of the vehicle is strengthened, the ability to withstand the fatigue caused by the stretching is improved, as well as the mesh 130 maintains its own shape within the elastic range, It improves the holding force by tension and reduces the fatigue by bending.

Figure 3 is another embodiment of the drainage rubber 100, the folding portion is formed in the middle so that the expansion and contraction smoothly in response to the expansion and contraction action of the displacement and deformation of the bridge, while the stretching action is smooth , But has a disadvantage in that the breakage is easy, but the mesh 130 is vulcanized by the horizontal steel wire 131 and the vertical steel wire 132 in a lattice form, the fatigue stress for the stretching action is enhanced, so the breakage occurs easily I never do that.

Therefore, the drainage rubber 100 including the mesh 130 in which the horizontal steel wire 131 and the vertical steel wire 132 each having a thickness of 0.42 mm is inverted in a lattice form is free from displacement and deformation regardless of its shape. The fatigue stress for the stretching action is enhanced, the ability to withstand the fatigue caused by the expansion is high, suitable for the bridge especially the railway bridge drainage rubber 130, which must be complicated for the preliminary work for maintenance.

1: Upper slab 10: Joint
100: drainage rubber 110,120: pad
130: mesh 131: horizontal steel wire
132: longitudinal steel wire

Claims

Anchors fixed and buried in the reinforcing steel bars of the upper sleeve 1, which are mounted on the upper part of the pier, have a length corresponding to the length of the joint 10 in which the anchor 10 is buried, and at the same time, displacement of the upper sleeve 1 In the rubber for drainage is installed under the joint 10 so that expansion and contraction is made smoothly according to the deformation and the rainwater flowing between the joints 10 can be collected and drained.
Drained rubber 100 having a total thickness of 5 t is manufactured, and the horizontal mesh 131 and the vertical steel line 132, each having a thickness of 0.42 mm, are inverted into a lattice, and the mesh 130 having a thickness of 2.5 t, respectively. Rubber structure for drainage of the expansion joint device for a railway bridge, characterized in that the vulcanized adhesive is located between the pad 110 and the pad 120 having a.