KR-20260063163-A - CONSTRUCTION METHOD OF EXPANSION JOINT OF STRUCTURE AND COMPOSITE CONNECTOR FOR EXPANSION JOINT OF STRUCTURE

KR20260063163AKR 20260063163 AKR20260063163 AKR 20260063163AKR-20260063163-A

Abstract

The present invention relates to a method for constructing an expansion joint of a structure and a composite connecting material for an expansion joint of a structure, which prevents cracking and leakage without interfering with the expansion behavior of the structure, reduces tensile force in areas where tensile force acts due to deflection caused by dynamic load, and reinforces the expansion joint of the structure through surface treatment. A method for constructing an expansion joint of a structure according to the present invention comprises: a first step of forming a repair and reinforcement layer by applying a repair and reinforcement composition to the surfaces of adjacent structures adjacent to the expansion joint; and a second step of installing a composite connecting material on the surface of the repair and reinforcement layer. The method comprises a third step of forming a paving layer by laying a paving material on top of the composite connector, wherein the first step involves applying a repair reinforcement material composed of a mixture of 10 to 15 parts by weight of a dispersant, 25 to 40 parts by weight of a silane coupling agent, 20 to 35 parts by weight of a thixotropic agent, 130 to 160 parts by weight of sinterable alumina powder, 80 to 95 parts by weight of plain silicon carbide powder, and 80 to 95 parts by weight of a chelate stabilizer, wherein the composite connector comprises porous first and second grid parts that are placed on the first and second repair reinforcement layers and connected to the structure, and an expansion behavior part that is connected to the first and second grid parts and is located on the expansion joint between the structures and exhibits expansion behavior.

Inventors

오환원

Assignees

피엔에이건설 주식회사

Dates

Publication Date: 20260507
Application Date: 20241030

Claims (4)

A first step of forming a repair and reinforcement layer by applying a repair and reinforcement composition to the surfaces of adjacent structures separated by an expansion joint; A second step of installing a composite connecting material on the surface of the repair reinforcement layer; It includes a third step of forming a paving layer by laying a paving material on top of the composite connecting material, and The first step involves applying a repair and reinforcement composition comprising, for every 100 parts by weight of modified polyorganosiloxane resin, a mixture of 10 to 15 parts by weight of a dispersant, 25 to 40 parts by weight of a silane coupling agent, 20 to 35 parts by weight of a thixotropic agent, 130 to 160 parts by weight of sinterable alumina powder, 80 to 95 parts by weight of plain silicon carbide powder, and 80 to 95 parts by weight of a chelate stabilizer. A method for constructing an expansion joint of a structure, characterized in that the above composite connecting material comprises porous first and second grid sections that are placed on the first and second repair reinforcement layers and connected to the structure, and an expansion behavior section that is connected to the first and second grid sections and is located on the expansion joint between the structures and exhibits expansion behavior.
A method for constructing an expansion joint of a structure according to claim 1, wherein the first and second grid portions comprise first and second water barrier portions, first and second repair reinforcement layer joining portions formed at the bottom of the first and second water barrier portions and into which a repair reinforcement agent of the first and second repair reinforcement layer penetrates and adheres to the first and second repair reinforcement layer, and first and second paving layer joining portions formed at the top of the first and second water barrier portions and into which a paving agent of the paving layer penetrates and is joined to the paving layer.
A method for constructing an expansion joint of a structure according to claim 2, wherein the expansion behavior portion of the composite connecting material comprises a glass fiber reinforced polymer sheet wrapped with an impermeable sheet to guide the penetrating water that has penetrated into the pavement layer to the joint portions of the first and second pavements on both sides, and a metal plate inserted inside the impermeable sheet and bent convexly toward the top.
A porous first and second grid section that is placed on the surface of a structure spaced apart by an expansion joint and connected to the structure; It includes an expansion joint that is connected to the first and second grid sections between the first and second grid sections and is positioned on the expansion joint between the structures to perform expansion and contraction, and A composite connecting member for an expansion joint of a structure, characterized in that the above-mentioned expansion movement part supports the first and second grid parts while being tensioned by a load applied from above.

Description

Construction Method of Expansion Joint of Structure and Composite Connector for Expansion Joint of Structure The present invention relates to a method for constructing an expansion joint of a structure, and more specifically, to a method for constructing an expansion joint of a structure that resolves cracks and leakage in the expansion joint of a structure such as an underpass, reduces the tensile force applied to the expansion joint, and reinforces the expansion joint of the structure through surface treatment, as well as to a composite connecting material for an expansion joint of a structure. Generally, roads (such as underpasses) and concrete box structures form expansion joints to account for contraction or expansion caused by temperature changes, and various technologies have been proposed regarding this. Published Patent No. 10-2003-0024015 protects the exterior of the expansion joint with UV protection tape and protective wire mesh, and inserts and installs a multi-cell rubber plate and a space-maintaining mold; however, it only expands according to the expansion and contraction behavior of the structure and cannot protect the ends of the structure. Registered Patent No. 10-1096087 involves installing a fixing device and a core material in an expansion joint and installing the core material in a zigzag shape, a grid shape, or a combination thereof, but it cannot solve the problem of the expansion joint undergoing tensile deformation due to load. To summarize the problems with conventional expansion joints, under dynamic vehicle loads, the structural ends on both sides of the expansion joint undergo deformation in the deflection direction, while the upper part of the expansion joint is subjected to tensile force. Since no solution has been provided for this, the lifespan of the expansion joint is short. Furthermore, damage to the expansion joint causes damage to the structural ends, shortening the lifespan of the structure and requiring high maintenance costs. Additionally, the technology only addresses the expansion behavior of the structure and does not apply reinforcement technology using surface treatment, resulting in weak durability of the structure and the expansion joint. FIG. 1 is a flowchart of a method for constructing an expansion joint using a composite connector for an expansion joint of a structure according to the present invention. FIG. 2 is a perspective view of a composite connecting material for an expansion joint of a structure according to the present invention. FIG. 3 is an operating state diagram of a composite connector for an expansion joint of a structure according to the present invention. In the following description of the present invention, specific descriptions of related known functions or configurations will be omitted if it is determined that such descriptions would unnecessarily obscure the essence of the invention. Furthermore, the terms described below are defined in consideration of their functions within the present invention, and these definitions may vary depending on the intentions or practices of the user or operator. Therefore, such definitions should be based on the content throughout this specification. As shown in FIG. 1, the method for constructing an expansion joint using a composite connector for an expansion joint of a structure according to the present invention is as follows. 1. Formation of repair reinforcement layer. In order to construct an expansion joint of a structure, the surface of the structure is prepared and a repair reinforcement material is applied to form a repair reinforcement layer. At this time, the structure consists of a first and second structure (1, 2) spaced apart by an expansion joint (gap). In the case of repair construction, the area where the present invention is to be applied is removed from the paving layer above the first and second structures (1, 2), and in the case of new construction, the present invention is applied to the expansion joint of the first and second structures (1, 2) and then paved. The repair reinforcing material is a composition comprising, for every 100 parts by weight of modified polyorganosiloxane resin, 10 to 15 parts by weight of a dispersant, 25 to 40 parts by weight of a silane coupling agent, 20 to 35 parts by weight of a thixotropic agent, 130 to 160 parts by weight of sinterable alumina powder, 80 to 95 parts by weight of plain silicon carbide powder, and 80 to 95 parts by weight of a chelate stabilizer, and the functions of these materials are explained as follows. Modified polyorganosiloxane resin is a base material for forming a film of a repair reinforcement layer and consists of one or more of alkyd-modified silicone resin, epoxy-modified silicone resin, polyester-modified silicone resin, acrylic-modified silicone resin, and urethane-modified silicone resin. The dispersant functions for uniform mixing of materials, the silane coupling agent (one or more of alkoxysilane, vinylsilane, a