KR200295275Y1 - Expansion joint of concrete structure - Google Patents

Abstract

The present invention relates to an expansion joint of a concrete structure, the fixing member is fixed to each side deck of the concrete structure, the intermediate coupling member is installed in the middle portion between the fixing member on both sides, the upper and middle of the fixing member on both sides An expansion joint consisting of a plurality of expansion members connected horizontally on both ends of the coupling member, the expansion joint is formed long in the longitudinal direction of the lower coupling sphere while protruding symmetrically downward from the bottom of the lower coupling sphere of the intermediate coupling member A pair of tension fasteners that are elastically opened while being symmetrically facing each other in an open state downward and are elastically restored to their original state; An intermediate brace member which is press-fitted inwardly and fixedly installed in the lower side of the pair of tension binding ports, and is installed in the longitudinal direction of the intermediate coupling member; Both ends coupled to the lower coupling protrusions of the fixing member on both sides, the intermediate portion is coupled to the bottom of the intermediate brace member, and between the both sides and both ends of the intermediate portion protrudes downwardly toward the separation space in a stretched state It is designed to include a tension creep member that is continuously installed in the longitudinal direction of the separation space while the elastic portion is formed integrally.

Description

Expansion joint of concrete structure

The present invention relates to expansion joints of concrete structures that connect decks spaced at regular intervals in various concrete structures such as large and small bridges, parking buildings, and large commercial buildings.

In general, bridges, parking buildings, shopping malls, etc. are equipped with expansion joints that absorb and mitigate the contraction and expansion of both decks spaced at regular intervals.

As described above, the expansion joint of the prior art installed in a concrete structure such as a bridge or a parking building is installed with a pair of expansion panels having strengths capable of supporting heavy loads by installing the free ends overlapping up and down. There is a bar.

The pair of expansion panels have a structure in which the sliding ends are freely installed with the free ends overlapping each other while the fixed ends are fixed to each of the joint parts of the two side decks facing each other, spaced at a predetermined interval. Have

However, the expansion joint of the prior art as described above is a pair of expansion panels are slidably assembled, so that the pair of expansion panels installed in the overlapping state in the up and down direction as the deck joints on both sides contract or expand, so that the expansion joints are in the contracting or expanding direction. The sliding operation can cover the upper part of the separation space formed between the deck joints facing each other, but the free ends of the pair of expansion panels are simply overlapped up and down, ensuring the airtightness. It is pointed out that it is not. Therefore, when the expansion joint is installed in the state exposed to the outside, the phenomenon that the outside air enters the inside of the deck joint, as well as the situation is a problem that the rain water is infiltrated in a large amount of rain.

The present invention has been made to solve the problems of the prior art as described above, the joints of the two sides of the deck facing each other can elastically operate in response to the contraction and expansion action, and also perfect the phenomenon of infiltration of outside air or rainwater In addition, the present invention aims to provide an expansion joint capable of sufficiently supporting the load even if a heavy load is applied on the deck joint. In particular, the present invention improves Utility Model Registration No. 241528 registered by the applicant in advance. It is designed to reduce the construction cost of expansion joint by reducing the number of assembly parts of the expansion joint and to facilitate the assembly work.

Means of the present invention for achieving the above object,

A fixed member fixed to each side deck of the concrete structure spaced apart from each other in consideration of contraction and expansion, an intermediate coupling member installed at an intermediate portion between the fixed members on both sides, and an upper end of the fixed member on both sides; An expansion joint composed of a plurality of expansion members connected horizontally on both ends of the intermediate coupling member,

Protruding symmetrically from the bottom of the lower coupling member of the intermediate coupling member downwardly and extending in the longitudinal direction of the lower coupling member, and being elastically opened while being symmetrically facing each other while being opened downward. A pair of tension binders that are elastically restored to each other;

An intermediate brace member which is press-fitted inwardly and fixedly installed in the lower side of the pair of tension binding ports, and is installed in the longitudinal direction of the intermediate coupling member;

Both ends coupled to the lower coupling protrusions of the fixing member on both sides, the intermediate portion is coupled to the bottom of the intermediate brace member, and between the both sides and both ends of the intermediate portion protrudes downwardly toward the separation space in a stretched state Tension creep member which is continuously installed in the longitudinal direction of the separation space while the elastic portion is formed integrally;

It is characterized in that the further comprises.

In addition, the tension creep member is characterized in that a plurality of consecutive installation in the longitudinal spaced apart state in the longitudinal direction of the space,

In addition, the lower side of the tension creep member is characterized in that it further comprises a leakage preventing index member for covering the entire separation space formed between both decks.

1 is a cross-sectional view of the installation state for explaining the present invention.

2 is a partially enlarged cross-sectional view of the present invention.

3 and 4 is a cross-sectional view of the operating state of the present invention.

5 is a cross-sectional view taken along the line A-A of FIG.

Figure 6 is a cross-sectional view taken along the line A-A of Figure 1, another embodiment of the present invention.

※ Explanation of code for main part of drawing

1: Deck 2: Fixing member

3: coupling member 4a: finishing member for finishing

5: middle coupling member 5a: upper coupling sphere

5b: lower coupler 6: expansion member

7: fastening member 8: intermediate bracing member

9: tension creep member 11: base part

12: finish portion 21: vertical portion

22: anchor 23: lower support

24,25: upper and lower coupling projections 26: lower connection projections

27: upper support part 31, 51: fastening bolt

32: upper connecting projection 41,42: upper and lower

52,53: upper and lower connection protrusion 54: tension connection

91: middle part 92: expansion and contraction

An embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view illustrating an installation of the present invention, FIG. 2 is a partially enlarged cross-sectional view of the present invention, and FIGS. 3 and 4 are cross-sectional views of an operation state of the present invention, and FIG. 6 is a cross-sectional view taken along the line AA of Figure 1, showing another embodiment of the present invention.

Reference numeral 1 denotes both decks are formed to form a space (L) spaced apart at a certain distance in consideration of the natural phenomenon that the various concrete structures shrink and expand as the temperature changes, the both decks (1) It is composed of a base portion 11 that is constructed of reinforced concrete and a finishing portion 12 fixedly installed with expansion joints on the base portion 11 and then poured into a bare concrete mortar.

The expansion joint is installed to elastically operate according to the contraction and expansion action of both decks (1), which are formed to form a space (L) of a predetermined distance, and protects various concrete structures and simultaneously decks ( Covering the spaced apart space of 1) is to connect the upper surface of both decks (1) horizontally.

When the components of the expansion joint are largely divided, the fixing member 2 is symmetrically fixed to each of the base portions 11 of the deck in which the spaced space L having a predetermined interval is formed, and coupled to the upper side of the fixing member. The upper end 41 is interposed between the coupling member 3, the upper end of the fixing member 2, and the coupling member 3, and the lower end 42 is installed on the base 11 in a wide width to prevent leakage. Finish index member (4a), the intermediate coupling member (5) installed between the fixing member (2), a plurality of horizontally connected between the fixing member (2) and the intermediate coupling member (5) of both sides Expansion members (6), fastening members (7) for fastening the two ends of the expansion member (6) on both sides of the fixing member (2), the coupling member (3) and the intermediate coupling member (5), the intermediate coupling member Intermediate brace member 8 which is horizontally fastened to the bottom side of (5), both ends of which are fastened to the fixing members 2 of both sides described above The part is installed at the lower side of the tension creep member 9 and the tension creep member 9 which is installed in the state entered into the spaced space L in the state of being bound to the intermediate bracing member 8, and the spaced apart space L. It is divided into components of the leakage preventing index member (4b) to prevent the outside air or rainwater from penetrating.

Referring to the installation and coupling structure of each component of the expansion joint as described above are as follows.

The fixing member 2 has a vertical support portion 21 and a lower support portion 23 fixed to the anchor bolt 22 in a state seated on the base portion 11 of the deck 1 at the bottom of the vertical portion 21. And the upper and lower coupling protrusion pieces 24 and 25 protruding to the opposite side of the lower support part 23 as one side of the vertical part 21, and the upper part as one middle part of the vertical part 21. A lower connection protrusion 26 formed above the coupling protrusion piece 24 and an upper support portion 27 protruding in a direction opposite to the lower connection protrusion 26 are formed at the upper end of the other side of the vertical portion 21. .

And the bottom surface of the lower end support part 23 which contacts the upper surface of the said base part 11 is formed with the uneven part 23a which strengthens a frictional force.

Next, the coupling member 3 is screwed into the fastening bolt 31 to the upper support portion 27 of the fixing member 2, the one side of the coupling member 3 toward the lower connection projection 26 The upper connection protrusion 32 bent downward is formed.

In addition, the upper connection protrusion 32 is spaced apart from the upper end of the vertical portion 21 of the fixing member (1) at a predetermined interval.

Next, the closing index member 4a covers the upper end 41 and the lower support 23 of the fixing member 2 interposed between the upper support 27 and the coupling member 3 of the fixing member 2. Although the upper and lower surfaces of the upper end 41 are formed of an uneven surface, the front end is bent downward so that the upper end of the vertical part 21 of the fixing member 2 and the coupling member ( It is installed in the state sandwiched between the upper connecting projections 32 of 3), and the lower end 42 is installed to cover the base portion 11 in a wider width than the lower support portion 23 is extended.

Next, the intermediate coupling member 5 is formed in a structure that is coupled to the fastening bolt 51 in the upper, lower coupling sphere (5a) (5b) is assembled up and down, the upper coupling sphere (5a) The upper connecting protrusions 52 protruding downwardly are formed at both ends, and the lower connecting protrusions 53 are formed at both ends of the lower coupling holes 5b.

Fitting grooves (not shown) are formed in each of the upper and lower connection protrusions 52 and 53.

In addition, a pair of tension binders 54 protrude symmetrically toward the bottom of the lower coupler 5b of the intermediate coupling member 5, and the pair of tension binders 54 have a lower end thereof. It is opened downward and the upper portion immediately above the opened lower end has a structure that is elastically opened in the state of being formed in the shape of a circular cross section and then elastically restored to its original state.

Next, the expansion member 6 is formed of an elastic material having high elasticity, and is formed as a pleat portion connected to a cross-sectional structure of an 'X' shape and a 'Y' shape so that small and large grooves having a 'V' shape are formed on the upper and lower surfaces thereof. It is composed of, both ends are inserted in between the lower connection projection 26 of the fixing member 2 and the upper connection projection 32 of the coupling member 3 in an open state in a '=' shape. The other end is inserted and connected between the upper and lower connection protrusions 52 and 53 formed at the upper and lower binding ports 5a and 5b of the intermediate coupling member 5.

Next, the fastening member 7 is formed to have an 'H' shape in cross section and is responsible for firmly connecting both ends of the expansion member 6 to each of the fixing member 2 side and the intermediate coupling member 5 side. It is.

That is, in order to connect the expansion member 6 to the fastening member 7 to the fixing member 2, one of the vertical pieces of the two vertical pieces whose cross section is formed in the 'H' shape is the fixing member 2 described above. ) Is inserted between the upper and lower connection protrusions 32 and 26 formed on each of the coupling members 3, and the other vertical piece is inserted into one end of the expansion member 7 to open one end of the expansion member 6. It is to be connected to the fixed member (2) and the coupling member (3) in a fixed state,

In addition, when the expansion member 6 is to be connected to the intermediate coupling member 5, one of the vertical pieces on both sides is inserted and connected inside the end of the expansion member 6 to be connected, and the other vertical piece is The upper and lower coupling holes 5a and 5b of the intermediate coupling member 5 are inserted and connected between the upper and lower connection protrusions 52 and 53 formed at one side.

Next, the intermediate bracing member 8 is formed of a metal round rod, and is pressed into a pair of tension binding ports 54 formed at the bottom of the lower coupling hole 5b of the intermediate coupling member 5, the pair When the tension binding port 54 of the intermediate brace member 8 is pushed through the opening lower end elastically toward both sides, and when the insertion of the intermediate brace member 8 is completed a pair of tension binder ( 54 is elastically restored to its original state to firmly hold the intermediate brace member 5.

Next, the tension creep member 9 is installed at both ends thereof to be connected to the base 11 of both decks 1, and both decks 11 are inflated and installed to support the intermediate support member 8. As it contracts, it is installed to perform stretching.

Both ends of the tension creep member 9 are fixedly connected by the coupling bolt 93 in a state where they overlap with the lower coupling protrusion pieces 25 of the fixing members 2 on both sides fixedly installed on the base portion 11, and the tension is also provided. The middle portion 91 of the creep member 9 is fixedly attached with a bolt or rivet 94 while supporting the intermediate brace member 8 in a horizontally formed state.

In addition, the tension creep member 9 has a plurality of expansion and contraction portion 92 is formed in accordance with the expansion or contraction action of the both sides of the deck (1), the expansion portion 92 of the intermediate portion (91) It protrudes in a curved state downward toward the separation space (L) from both sides.

On the other hand, the tension creep member 9 can be continuously formed in the longitudinal direction of the separation space (L) so as to cover the entire separation space (L) formed between the two decks (1), or As shown in FIG. 6, a plurality of relatively short widths may be continuously installed in a state spaced apart at regular intervals.

Next, the leak-proof index member (4b) is formed of a rubber plate to cover the entire separation space (L) formed between the two decks (1) to be installed to prevent the outside air and rainwater infiltration, Both ends of one of the leakage preventing index members 4b are installed to cover the upper surface of the base 11 of both decks 1 so that the middle part is positioned below the tension creep member 9.

Referring to the operation of the present invention configured as described above are as follows.

When the concrete structure is constructed, the expansion joint fixed to the deck 1 is installed in a state in which the expansion member 6 and the tension creep member 9 are not contracted or expanded as shown in the example of FIG. 1.

As described above, both sides of the deck 1 on which the expansion joint is installed are contracted or expanded due to a change in temperature, and thus the expansion joint is elastically operated. That is, when the phenomenon in which both decks 1 are contracted, the expansion joint is inversely expanded, and when the both decks 1 are inflated, the expansion joint is conversely inflated.

First, as shown in FIG. 4, the expansion joint is expanded when the contraction action appears on both decks 1.

When the two decks 1 are contracted, the separation space L + α between the two decks 1 becomes wider, and thus the expansion joint is in an inflated state. A plurality of expansion members 6 having both ends connected to the side and the intermediate coupling member 5 side are elastically extended by their own elasticity, and the fixing members 2 on both sides fixed to both decks 1 are both sides. As the deck 1 is contracted, it is in a state in which it expands in the opposite direction to each other, and the tension creep member 9 having both ends connected to the lower engaging stone pieces 25 of both fixing members 2 has a middle portion thereof. Both sides of the expansion and contraction portion 92 in a state in which 91 supports the intermediate brace member 8 is extended to both sides in a gently curved state, and the leakage preventing index member 4b is also gently curved. It is in a state of increasing state.

Therefore, even if the contraction action occurs on both decks 1, the expansion members 6 of the expansion joint maintain the state connecting the bottom surfaces of the both decks horizontally, and the tension creep member ( 9) also maintains the state supporting the intermediate brace member (8), and the leak-proof index member (4b) also maintains the state that covers the entire gap space (L + α) further open as it is It is possible to prevent air and rainwater from penetrating.

Next, as shown in FIG. 5, the expansion joint contracts when the expansion action appears on both decks 1.

When both decks 1 are expanded, the space L-α of both decks 1 is narrowed as much as they are inflated, and thus the expansion joint is contracted. At this time, both fixing members 2 ) And the expansion member 6 on both sides horizontally connected to the intermediate coupling member 5 is elastically shrunk by its elasticity, and the tension creep member 9 has an intermediate portion 91 in the middle thereof. While the support member 8 is held in a horizontal state as it is, the elastic members 92 on both sides are elastically retracted in a sharply curved state, and the leakage preventing index member 4b is also elastic. It will be in a narrowing state.

Therefore, even if an expansion action occurs on both decks 1, the expansion members 6 of the expansion joint are elastically contracted to maintain the state connecting the bottom surfaces of both decks 1 horizontally, and also tension The creep member 9 also contracts elastically and maintains the state supporting the intermediate brace member 8 horizontally as it is, and the leakage preventing index member 4b also covers the entire narrowed space L-α. It is possible to prevent the phenomenon that the outside air penetrates into the joints of both decks 1 and the rain water leakage.

The present invention as described above is when the expansion joint that connects the two decks spaced apart at regular intervals is contracted or expanded on both decks in accordance with the change in temperature appears to expand and contract elastically accordingly There is an effect of covering the separation space tightly and securely, in particular, the present invention is a utility model registered by the applicant as a means for configuring the intermediate brace member with a tension creep member connecting the joints of both decks. Compared with the expansion joint of the arc, the number of assembly parts can be reduced, and the assembly time of the expansion joint can be reduced to shorten the air.

Claims (3)

A fixed member fixed to each side deck of the concrete structure spaced apart from each other in consideration of contraction and expansion, an intermediate coupling member installed at an intermediate portion between the fixed members on both sides, and an upper end of the fixed member on both sides; An expansion joint composed of a plurality of expansion members connected horizontally on both ends of the intermediate coupling member, Protruding symmetrically from the bottom of the lower coupling member of the intermediate coupling member downwardly and extending in the longitudinal direction of the lower coupling member, and being elastically opened while being symmetrically facing each other while being opened downward. A pair of tension binders that are elastically restored to each other; An intermediate brace member which is press-fitted inwardly and fixedly installed in the lower side of the pair of tension binding ports, and is installed in the longitudinal direction of the intermediate coupling member; Both ends coupled to the lower coupling protrusions of the fixing member on both sides, the intermediate portion is coupled to the bottom of the intermediate brace member, and between the both sides and both ends of the intermediate portion protrudes downwardly toward the separation space in a stretched state Tension creep member which is continuously installed in the longitudinal direction of the separation space while the elastic portion is formed integrally; Expansion joint of the concrete structure, characterized in that comprises a. The method of claim 1, The tension creep member is an expansion joint of a concrete structure, characterized in that a plurality of consecutive installation in a continuous state spaced apart in the longitudinal direction of the separation space. The method of claim 1, The expansion joint of the concrete structure, characterized in that the lower side of the tension creep member further comprises a leakage preventing index member for covering the entire separation space formed between the two decks.