KR200227564Y1 - a slab joint for bridge - Google Patents

Abstract

The present invention relates to a good cushioning and waterproofing joint formed in the joint between the slab of the bridge and the slab, in particular to a design that allows for a robust structure, excellent cushioning and perfect waterproof.

The space portion formed in the conventional joint deteriorates the riding comfort because it causes a considerable shock while driving the vehicle, and this impact increases the fatigue of the bridge, which in turn is a major cause of shortening the life of the bridge.

Therefore, the present invention is a backing agent 20 and the coating layer 40, 50 is inserted into the space 11 of the encapsulant layer 42 and the slabs 1 stacked in the connection groove 10 is buffering Since this is very good, the slab 1 can be effectively buffered by coping with the deformation of the bridge caused by the contraction and expansion of the slab 1, and the granule layer 41, the encapsulant layer 42 and the backup agent 20 The space portion 11 formed between the two sides is completely covered to effectively prevent a bumpy impact generated when the vehicle is running, and to achieve a completely waterproof, so that the riding comfort can be maintained well, and the bridge by the impact The conventional problems such as increased fatigue or corrosion of the steel structure of the bridge are completely eliminated.

Description

Slab joint for bridge

The present invention relates to a good cushioning and waterproofing joint formed in the joint between the slab of the bridge and the slab, in particular to a design that allows for a robust structure, excellent cushioning and perfect waterproof.

In general, a bridge is a structure in which concrete slabs are continuously mounted on a pier made of a reinforced structure, and various joints are installed at a joint formed between the slab and the slab to prevent deformation of the bridge due to the contraction and expansion of the slab. It is supposed to be.

However, these joint facilities form a suitable space between the slabs on both sides in preparation for shrinkage and expansion of the slab, so that rainwater or snow-melted water containing calcium chloride flows through the space to form a pier. As the structure corroded, the closures such as weakening the overall strength and strength of the bridge occurred.

In particular, during the cold winter, as the water penetrated through the space portion of the joint freezes and thaws, not only the corrosion of the steel structure is promoted, but also the cracks are severely generated.

In addition, the space portion formed in the joint causes a significant impact while driving the vehicle, causing a significant ride comfort, and this impact increases the fatigue of the bridge, which in turn is a major cause of shortening the life of the bridge.

The present invention was conceived in view of the above problems, and its purpose is to cover the space formed in the joint between the slab and the slab to achieve a complete waterproof and to solve the shock of the vehicle during driving, extending the life of the bridge for a considerable period of time. It is to provide a joint of bridge slab seam that can be made.

Features of the present invention for achieving the above object, the connection groove 10 is cut to a predetermined width in the asphalt or concrete road (2) paved on the joint of the slabs (1) continuously mounted on the piers; A backup agent 20 inserted into the space 11 formed between the slab 1 and the slab 1 and having elasticity and heat resistance; A filler layer (21) filled with a resilient encapsulant mainly composed of asphalt and rubber in the space part 11 above the backup agent 20; A metal plate 30 placed on an upper surface of the space 11; A fixing nail 31 which is penetrated by the backing agent 20 through the metal plate 30; A coating layer 40 coated with a sealant in the connection groove 10 so that the metal plate 30 is buried; A rock granule layer 41 and an encapsulant layer 42 stacked on and in the connection groove 10; A coating layer 50 in which a thin sealant is applied to the surfaces of the crushed rock granules 41 and the sealant layer 42; The coating layer 50 can be achieved by the joint of the slab joints for the bridge, characterized in that the sand is sprayed.

1 is a cross-sectional view illustrating an embodiment of the present invention,

Figure 2a to 2k is a cross-sectional view of the construction method of the present invention arranged by process.

Explanation of symbols on the main parts of the drawings

1: slab

2: road

10: connecting groove

11: space part

20: backup agent

21: filler layer

30: metal plate

31: nail

40, 50: coating layer

41: granule layer

42: suture layer

51: sand

Hereinafter, the construction method of the joint according to the present invention to achieve the structure of the joint described in detail by the accompanying drawings as follows.

As shown in Fig. 1 to 2, after cutting the asphalt or concrete road (2) paved on the seams of the slabs (1) continuously mounted on the piers to a certain width, lift out and clean the inner floor to clean '?? Form a connecting groove 10 of the '.

This step draws the marking lines on both sides of the asphalt road 2 paved on the slab 1 so that the space 11 of the joint is located at the center, cuts it with a round saw, cuts the inside of the cutting line, and then fragments. Lift out

At this time, small debris should be completely blown out using compressed air and then dried inside the connecting groove 10 using hot compressed air. At this time, when the excavated site is uneven, it is preferable to apply the mortar which is hardened rapidly to perform the stop operation.

Subsequently, a backing agent 20 having elasticity and heat resistance is inserted into and fixed in the space 11 between the slab 1 and the slab 1 formed at the center of the bottom surface of the connecting groove 10.

It is important to compress and insert the backup agent 20 having a diameter of about 1.3 to 1.5 times larger than the width of the space 11. The backup agent 20 serves to seal the space 11 by elastically corresponding to the width of the space 11 to be stretched and is mainly made of a foamable resin having elasticity, and withstands heat of about 200 ° C. or more. Made of heat resistant material.

Subsequently, a filler layer 21 is formed by injecting a resilient material mainly composed of asphalt and rubber into the space 11 whose lower portion is blocked by the backup agent 20 to form the filler layer 21, and the connection groove 10. Apply a thin layer of suture to the inner surface of the shell.

The encapsulant is a rubber powder, a small amount of synthetic resin and thermoplastic resin added to the asphalt, and is made of a material having considerable elasticity when it is filled and cured in a gel (heated) state at about 180 to 200 ° C.

Subsequently, the metal plate 30 is placed on the upper surface of the space portion 11 filled with the encapsulant, and the metal plate 30 is penetrated by the fixing nail 31 so that the lower end of the nail 31 is the inside of the backup agent 20. The backing agent 20 and the metal plate 30 are firmly fixed by being embedded in the core.

Subsequently, a sealant is applied to the inside of the connection groove 10 so that the metal plate 30 is buried to form a coating layer 40.

Next, the rock grain layer 41 and the encapsulant layer 42 are laminated on the inside of the connecting groove 10.

The rock granulation layer 41 is pulverized stone such as granite, basalt, gabbro, rock, sandstone, etc. to have a diameter of 12 ~ 19mm, and injected into a stirrer to stir at a temperature of 188 ~ 193 ℃ using a torch lamp and the like After heating, the surface is coated with a small amount of suture.

At this time, the ratio of the sutures used to coat the rock granules aggregates uses 1 L of sutures per 12 Kg of the rock granule aggregates.

The encapsulant is heated to be used at a temperature of 188 to 196 ° C., and the rock granule layer 41 and the encapsulant layer 42 are turned on to be laminated, so that the uppermost portion is the encapsulant layer 42. At this time, the granulation layer 41 and the sealant layer 42 have a weight ratio of 3: 1.

Among the rock granules layer 41, the lowermost layer used grains having a diameter of about 19 mm, and the middle grain layer 41 used a mixture of grains having a diameter of about 12 mm and 19 mm in a weight ratio of 1: 1. The topmost grain layer 41 has a diameter of about 12 mm and the diameter of the grain layer 41 decreases toward the upper layer.

It is shown that the rock granules layer 41 and the sealant layer 42 are composed of three layers each alternately stacked, but depending on the working conditions, the number of layers may be different. It is not limited to the number of (41) and the sealing agent layer 42.

Subsequently, when the temperature of the rock granular layer 41 and the encapsulant layer 42 stacked in the connection groove 10 is lowered to about 107 ° C., the pulverizer is sufficiently chopped using a construction vibrator to be horizontal with the surface of the road. .

Subsequently, the suture is applied to the surface thinly to form a coating layer 50 and sufficiently dried, and then evenly sprayed with black sand 51 on the coating layer 50 to complete all the work. After 30 minutes to 1 hour after the work is completed, the vehicle can pass.

The black sand 51 sprayed on the coating layer 50 may prevent the coating layer 50 from being damaged by the automobile tire and the slipping of the vehicle.

The joint of the present invention completed through the above-described operation process is the backing agent 20 and the coating layer 40 inserted into the space 11 of the encapsulant layer 42 and the slabs 1 stacked in the connection groove 10. (50) is very good buffering ability to effectively deal with the deformation of the bridge caused by the shrinkage and expansion of the slab (1) can be buffered.

In addition, the rock granular layer 41 and the encapsulant layer 42 filled in the connection groove 10 completely cover the space 11 formed between the slab 1 and the slab 1 to be generated when the vehicle is driven. Since it is possible to effectively prevent a bumpy impact, it is possible to maintain a good ride comfort, and the problems such as the fatigue of the bridge is increased by the impact can be solved to extend the life for a considerable period.

In particular, a rock granule layer stacked on and inside the backing 20 and the filler layer 21 inserted into the space 11, the metal plate 30 fixed above the space 11, and the connecting groove 10. Since the space 11 is completely sealed by the 41 and the encapsulant layer 42 to achieve a completely waterproof, the conventional problems such as corrosion of the steel structure of the bridge are completely solved.

The present invention as described above, the backing agent 20 and the coating layer 40 (inserted into the space 11 of the encapsulant layer 42 and the slab 1 stacked in the connection groove 10 ( 50 have a very good buffering ability to effectively cope with the deformation of the bridge caused by the shrinkage and expansion of the slab (1), while the granule layer 41, the sealant layer 42 and the backing agent (20) By the space portion 11 formed between the slab is completely covered to effectively prevent the rugged impact generated during the running of the vehicle, as well as to achieve a completely waterproof can maintain a good ride comfort In addition, the conventional problems such as fatigue of the bridge due to the impact or corrosion of the steel structure of the bridge are completely eliminated.

Claims (2)

A connection groove 10 which cuts the asphalt or concrete road 2 paved on the joint of the slabs 1 continuously mounted on the pier to a predetermined width; A backup agent 20 inserted into the space 11 formed between the slab 1 and the slab 1 and having elasticity and heat resistance; A filler layer (21) filled with a resilient encapsulant mainly composed of asphalt and rubber in the space part 11 above the backup agent 20; A metal plate 30 placed on an upper surface of the space 11; A fixing nail 31 which is penetrated by the backing agent 20 through the metal plate 30; A coating layer 40 coated with a sealant in the connection groove 10 so that the metal plate 30 is buried; A rock granule layer 41 and an encapsulant layer 42 stacked on and in the connection groove 10; A coating layer 50 in which a thin sealant is applied to the surfaces of the crushed rock granules 41 and the sealant layer 42; The coating layer 50 is a joint of the slab joints for the bridge, characterized in that the sand is sprayed. According to claim 1, wherein the rock granulation layer 41 is a stone granules, such as granite, basalt, gabbro, rock, sandstone and the like to be pulverized to a diameter of 12 ~ 19mm and injected into a stirrer while stirring and using 188 ~ A slab joint for bridges, characterized in that the surface is coated with a small amount of encapsulant after heating to a temperature of 193 ° C.