KR20230034002A - Bridge support integrated cantilever structure and its construction method - Google Patents

Abstract

The present invention relates to a support-integrated cantilever structure for a bridge and a construction method thereof. An objective of the present invention is to integrally form or insert and integrate a deck fixing support with a fixing support bracket function in a lower portion of a cantilever deck without the structural inconvenience of a plurality of processes of binding and fixing a separate fixing support bracket to an anchor bolt of a bridge post and additionally fixing and supporting a cantilever deck on the fixing support bracket to allow simple and stable installation and binding for a bolt means buried in the edge of the upper side of the bridge post by a single process to drastically minimize coupling components and work man-hours for installing the cantilever deck. To achieve the objective, the support-integrated cantilever structure for a bridge comprises: deck fixing bolts projected and buried at regular intervals in a right-angle part of the edge of the upper side of a bridge post; a cantilever deck wherein bolt protrusion passing holes penetrated by the deck fixing bots and binding and fixing the deck fixing bolts by binding nuts are formed through a deck flat part in a horizontal direction at the intervals of the deck fixing bolts on the side opposite to a deck side part in a vertical direction, and conventional bent stirrups for structure strength improvement are installed on the upper side of the deck flat part; and a deck fixing support having a T-shaped horizontal cross section and a T-shaped vertical cross section to come in surface contact with a right-angle part of a corner of a sidewall of the bridge post in an accurate size to be mounted and installed to be integrally formed or inserted and integrated in a lower portion of the cantilever deck to improve the fixing power and durability of a cantilever structure.

Description

Bridge support integrated cantilever structure and its construction method {Bridge support integrated cantilever structure and its construction method}

The present invention relates to a support integrated cantilever structure for a bridge capable of simply and stably installing and fixing a cantilever deck on a pier in a single process, and a construction method thereof, and more particularly, to a separate fixing support bracket for anchor bolts of a pier. First, the deck fixing support having the fixing support bracket function is inserted into the bottom of the cantilever deck or integrally formed and embedded in the upper edge of the pier without the structural inconvenience of multiple processes of first binding and fixing the cantilever deck and additionally fixing and supporting the cantilever deck to the fixing support bracket. It relates to a bridge support integrated cantilever structure and its construction method that can dramatically minimize the combined components and work man-hours for installing a cantilever deck by simply and stably installing and binding the bolted means in a single process once. .

Generally, in bridge construction, cantilever construction is used for long spans, especially when there is an excessive load at a specific location.

In order to construct the outermost part of the upper part of the pier, which is the outermost section of the bridge, where the bridge deck is normally located, a construction method capable of installing a cantilever deck is required. As shown in the improved FIGS. 1A and 1B, a construction method of installing and binding a support fixing bracket 120 having a mounting and fixing function on the lower surface (bottom) of the cantilever deck 120 in the horizontal direction, which is a concrete structure, is commonly practiced. .

However, when the cantilever deck 120 is installed on the upper edge of the pier 110, a separate support fixing bracket 120 is separately provided, and after the first pre-installation, the cantilever deck 120 is mounted on the upper edge and fixed to complete A two-step post-binding process was required.

In particular, when installing the support fixing bracket 120 in this work process, the support fixing bracket 130 is fixedly coupled to the side of the pier 110 with the anchor bolt 140 normally embedded in the side wall of the pier 110, thereby improving the structural integrity. In addition to causing material damage to the piers 110, in order to install the support and fixing brackets 130, after installing the support and fixing brackets 130, at least two-step processing such as installation and binding of the cantilever deck 120 Since the process is required, the man-hours increase, and of course, the increase in overall man-hours and the cost increase are bound to be a burden.

Patent Registration No. 10-1014570 (Decks for concrete slab construction) Patent Registration No. 10-2212482 (Half-section deck using bridge brackets and its construction method) Patent Registration No. 10-1753240 (Hanging type expansion footbridge using cantilever and construction method) Patent Registration No. 10-1249285 (Bridge having a prestressed concrete box girder with a cantilever part formed with a precast bracket integrated with a top plate and its construction method) Patent Registration No. 10-1699888 (Bridge cantilever couple and its construction method) Patent Registration No. 10-1840763 (Construction method of cantilever bridge with T-shaped fixing bracket) Patent Registration No. 10-1082429 (Expansion support structure of civil engineering structure and expansion construction method using it) Patent Registration No. 10-2186545 (Removable support bracket for cantilever bridge and construction method of cantilever bridge using it) Patent Publication No. 10-2007-0053409 (Precast concrete panel and method of constructing non-reinforced beams for bridge slab cantilever using the same) Patent Publication No. 10-2016-0086435 (Girder bridge concrete deck using prestress introduction and bending stirrup) Patent Publication No. 10-2017-0125768 (separable fixing bracket and construction method of cantilever bridge equipped with it)

The present invention is intended to solve all the inconveniences and problems of the prior art in the structure of multiple processes of first binding and fixing a separate fixed support bracket to the anchor bolt of the pier and additionally fixing and supporting the cantilever deck to the fixed support bracket. The deck fixing support having a fixed support bracket function is inserted into the bottom of the cantilever deck or integrally formed so that the bolt means embedded in the upper edge of the pier can be simply and stably installed and bound in one single process, In particular, the deck fixed support with the bracketing function, which is integrally molded or inserted into the cantilever deck, has a T-shaped cross section in both the horizontal and vertical directions, providing simple, stable and accurate binding dimensions for the entire cantilever deck and pier sidewall structure. A bridge support integrated cantilever structure of a new construction structure that can be mounted, bound, fixed, and supported, reducing combined components and man-hours for installing a cantilever deck, as well as providing convenience and precision of work, and its Its purpose is to provide a construction method.

In order to achieve the above object, the bridge support integrated cantilever structure and the construction method of the present invention are implemented, first, the bridge support integrated cantilever structure is fixed to the deck that is embedded and protruded at regular intervals at the edge right angle part of the upper side of the pier. According to the spacing between the bolts and the deck fixing bolts on the opposite side of the deck side in the vertical direction, the deck fixing bolts pass through the deck flat in the horizontal direction, and the bolt protrusion through hole is formed through and bound with a binding nut, inside and on the upper side of the deck flat The bottom of the cantilever deck has a T-shaped cross section in both the horizontal and vertical directions so that it can be mounted and installed in contact with the cantilever deck in which the bending stirrup for improving the strength of the structure is installed and installed with the correct dimensions for the corner right angle part of the side wall of the pier It is inserted into or integrally formed to include a deck fixing support for improving the fixing force and durability of the cantilever structure.

In particular, the deck fixing support is an integral structure of the deck ground upper part in the horizontal direction and the pier ground side part in the vertical direction so that it can be supported in contact with the corner right angle part of the side wall of the pier. The middle ground protrusion in the vertical direction on the same line as the ground top is formed as an integral structure, but in the middle of the deck ground top in the horizontal direction, a through hole passed through the corresponding bolt protrusion of the cantilever deck and inserted into the deck fixing bolt on the upper side of the pier A bolt fastening protrusion is formed to protrude.

In addition, the deck fixing support is stable against the deck flat of the cantilever deck in the middle of the upper part on a horizontal straight line while the lower part of the intermediate ground protrusion protruding as an integral structure in the middle of the pier grounding side in the vertical direction is formed inclined toward the outside of the upper part. There is a technical feature in the construction principle of being buried inside the concrete slab while the deck ground protrusion is expanded and formed so that it can be fixed to the ground.

In addition, in the construction method of the bridge support integrated cantilever structure according to the present invention, deck fixing bolts are buried and protruded at regular intervals at the edge right angles on the upper side of the piers, and the cantilever deck is The deck flat part is passed through the deck fixing bolt and a bolt protrusion through hole is formed through it so that it can be bound and fixed with a binding nut, and the deck flat part lower part of the cantilever deck is configured by installing a bending stirrup to improve the strength of the structure on the upper side of the deck flat part ( bottom) in a T-shaped cross section in both the horizontal and vertical directions, a cantilever deck in which the deck fixing support is inserted or formed integrally with the upper edge of the pier, and the deck fixing support is integrally structured with the deck flat is inserted into the corresponding bolt protrusion through hole for the deck fixing bolt at the upper edge of the pier, and finished with a binding nut, so that the cantilever deck is installed and constructed on the pier at the upper edge of the pier in a single process.

In particular, in the cantilever deck, the deck fixing support is inserted or integrally formed on the lower side of the deck flat, and even in a single process, the cantilever structure is supported in contact with the corner right angle portion of the sidewall of the pier and coupled and fixed through the deck fixing bolt on the upper side of the pier. In order to improve the fixing force and durability, the deck fixing support, which basically has a T-shaped cross section in both the horizontal and vertical directions, has an integral structure of the upper deck ground in the horizontal direction and the pier ground side in the vertical direction, and the cross section is L-shaped, and the In the middle of the pier grounding side, the intermediate grounding protrusion in the vertical direction is formed as an integral structure on the same line as the deck grounding upper part, and in the middle of the deck grounding upper part in the horizontal direction, while passing through the corresponding bolt protrusion passage hole of the cantilever deck, the upper side of the pier There is a technical feature even though the core principle of protruding bolt fastening protrusions inserted into the deck fixing bolts is applied to the construction work.

In the bridge support integrated cantilever structure according to the present invention and its construction method, the deck fixing support basically having a fixing support bracket function is inserted into the bottom of the cantilever deck or formed integrally with bolt means embedded in the upper edge of the pier. It can be installed and bound simply and stably in one single process for the pier, which is a structural structure of multiple processes that first binds and fixes a separate fixed support bracket to the anchor bolt of the pier and additionally fixes and supports the cantilever deck to the fixed support bracket. Any inconveniences or problems can be resolved with certainty.

In particular, without using a separate support fixing bracket, which requires first bolting to the anchor bolts of the conventional pier and then bolting to the cantilever deck as a cumbersome additional work, structurally horizontal cantilever deck and vertical direction Bracket function and structure that can be simply and stably coupled and supported on all sidewalls of the pier, and by using the deck fixing support integrally inserted and fixed or integrally molded inside the cantilever structure, the cantilever deck on the pier can be installed in a simple, one-time process. Not only can it be mounted, but the right angle side of the deck fixing support applied as an integral structure to the cantilever deck can be securely mounted and installed with the right angle part of the corner of the pier and the exact dimensions. It is possible to install the cantilever structure simply, conveniently, and stably without difficulty even with a single operation, minimizing the work man-hours. It is expected to achieve various effects such as drastic cost reduction.

1A and 1B show an upper part where a cantilever structure is constructed on the side of a pier by coupling and fixing a separate fixed support bracket to an anchor bolt buried in a conventional pier sidewall, and bolting the cantilever deck again using the fixed support bracket as a support means. Perspective view of direction and downward installation condition.
2 is a structure in which a bridge support integrated cantilever structure is integrated with a deck fixed support having a T-shaped cross section through the construction structure and construction method according to the present invention, and is installed and installed on the side of the pier simply and firmly in a single process even in a single process. A perspective view of the lower part and an enlarged view of the lumbar part in a circle.
3 is a bridge support integrated cantilever structure of the present invention is installed and constructed in a single process on the side of the pier, and along the side wall of the pier, along the side wall of the cantilever deck, along with a drain and a drain pipe, the slab centered on the deck plain and the deck side of the cantilever deck The construction work of the cantilever structure where the firewall is installed and constructed.
4a and 4b are detailed views of the step-by-step installation work of FIG. 3 in which the construction method of the support-integrated cantilever structure of the bridge bracket function according to the present invention is implemented.
5a and 5b are a method of constructing a support integrated cantilever structure for a bridge of the present invention, in which a cantilever deck is integrated with a deck fixing support having a T-shaped cross section inserted into its bottom through a deck fixing bolt and a binding bolt on the upper side of the pier. Side view and cross-sectional view of a simple construction-bound mounting condition.
6 is a T-shape in cross section for the cantilever deck constituting the bridge support integrated cantilever structure of the present invention, and the upper deck ground portion in the horizontal direction in contact with the bottom of the cantilever deck and the pier ground side portion in the vertical direction in contact with the side wall of the pier A perspective view of a separate state in which the deck fixing support, which is basically formed with an intermediate ground protrusion with an inclined bottom, is inserted and integrated from the bottom and a bent stirrup for structural strength improvement is installed at the top of the opposite side.

Hereinafter, with reference to the accompanying drawings of the preferred embodiments, the drawings of the preferred basic and applied embodiments are shown, in which the specific compositional principle and the working relationship thereof are attached for realizing the support integrated cantilever structure for bridge and the construction method thereof of the present invention. I would like to refer to it for a more detailed explanation.

As shown in FIGS. 2 to 6, which are drawings of the attached preferred embodiment, in the bridge support integrated cantilever structure and its construction method according to the present invention, in the prior art, a separate fixed support bracket is first bound and fixed to the anchor bolt on the upper side of the pier. The deck fixing support 30, which is a key component of the present invention having a fixed support bracket function, is a cantilever deck ( 20) It is inserted into the bottom or formed integrally and is finished with the binding nut 12, which is a bolt binding and fixing means embedded in the upper edge of the pier 10. For the deck fixing bolt 11, one time in a single process It can be installed and bound simply and stably, which constitutes a bridge support integral cantilever structure of a construction method that can dramatically minimize the coupling components and work man-hours for installing the cantilever deck 20.

First of all, the bridge support integrated cantilever structure according to the present invention is basically fixed to a deck that is buried and protruded at regular intervals at the right angle part of the upper edge of the pier 10, as shown in the drawings of the combined state of FIG. 2 and the separated state of FIG. 6 As the bolt 110 is configured, the deck fixing bolt 11 can be fastened and passed through the deck fixing bolt 11 to the cantilever deck 20 to which the deck fixing support 30, which is a key component of the present invention, is applied as an integral structure. It has a technical feature in that it is formed through the Bor projection through-hole 23.

In addition, the cantilever deck 20, which forms a cantilever structure by applying the deck fixing support 30, which is contact-supported to the corner right angle part (contact part) of the upper side of the pier according to the present invention as an integral structure, is a deck side part 22 in the vertical direction ) On the other side, according to the spacing of the deck fixing bolts 11 on the upper side of the piers 10, the deck fixing bolts 11 pass through the deck flat part 21 in the horizontal direction and bind together to be integrally structured with the cantilever deck 20 Since the bolt protrusion through hole 23, which is bound and fixed by the nut 12, is formed through, there is a technical feature of basic configuration that has not been applied at all in the existing prior art.

And the upper side, including the upper side or the inner side of the horizontal deck flat part 21 of the cantilever deck 20, is applied with a bent stirrup 24 of metal reinforcement, which is installed to improve the strength of a normal structure. It is a basic configuration relationship.

In addition, the cross section in both the horizontal and vertical directions is T-shaped and inserted into the bottom of the cantilever deck 20 so that it can be mounted and mounted in contact with the corner (edge) right angle part (contact part) of the side wall of the pier 10. The deck fixing support 30, which is a differentiated key component of the present invention for improving the fixing force and durability of the cantilever structure, is configured and installed.

In particular, the deck fixing support 30 has a structure in which the deck ground upper part 31 in the horizontal direction and the pier ground side part 32 in the vertical direction are integrally structured so that it can be supported in contact with the corner right angle part of the side wall of the pier 10. The cross section is L-shaped, and in the middle of the pier grounding side portion 32, an intermediate grounding protrusion 34 in a vertical direction on the same line as the deck grounding upper part 31 is formed as an integral structure.

In addition, the deck fixing support 30 passes through the corresponding bolt protrusion hole 23 of the cantilever deck 20 in the middle of the deck ground upper part 31 in the horizontal direction, and the deck fixing bolt 11 on the upper side of the pier 10 The bolt fastening protrusion 33 inserted into the inside is protruded, and the bolt fastening protrusion 33 is naturally inserted into the through bolt protrusion hole 23 of the cantilever deck 20 and at the same time goes into it. is fitted and bound to the deck fixing bolt 11 on the upper side of the pier 10, which means that the cantilever deck 20 connects to the pier 10 via the bolt fastening protrusion 33 of the deck fixing support 30 For the upper deck fixing bolt 11, it is necessary to structurally perform the cumbersome and difficult secondary binding work itself, such as the primary binding work through bracket binding means of separate fixation and support function and additional separate secondary bolt binding. so that there is no

In addition, the deck fixing support 30 has an intermediate ground protrusion 34 protruding as an integral structure in the middle of the pier ground side portion 32 in the vertical direction. It is basically a triangular cross-sectional structure, and in the middle of the upper part on a horizontal straight line, the deck ground protrusion 35 is formed to be expanded so that it can be stably grounded to the deck flat part 21 of the cantilever deck 20. At this time, the deck fixing support 30 is basically embedded in the concrete slab 41 of the bridge deck, which is naturally operated through a post-processing process, as well as the expansion of the deck ground protrusion 35.

The deck fixing support 30 of this structure is integrally structured in the det flat 21, and the cantilever deck 20 is expressed through the work process drawings and enlarged detailed drawings of FIGS. 3, 4a and 4b As seen in the process sequence of the construction work, basically, first, the deck fixing bolts 11 are buried and protruded at regular intervals at the right angle part of the upper edge of the pier 10.

And according to the spacing of the deck fixing bolts 11 protruding on the upper side of the piers 10, the deck fixing bolts 11 pass through the deck flat part 21 of the cantilever deck 20 and can be bound and fixed with the binding nuts 12. A bolt protrusion through hole 23 is formed through.

In addition, the cross section in both the horizontal and vertical directions is T-shaped to the lower side (bottom) of the deck flat portion 21 of the cantilever deck 20 in which the bending stirrup 24 for improving structural strength is installed on the upper side of the deck flat portion 21. As a result, the deck fixing support 30, which is fixed in contact with the upper edge of the pier 10, is inserted or integrally formed.

In addition, the cantilever deck 20 in which the deck fixing support 30 is integrally structured with the deck flat part 21 is inserted into the corresponding bolt protrusion passage hole 23 for the deck fixing bolt 11 of the upper edge of the pier 10 fastened, and the deck fixing bolt 11 protruding outward of the bolt protrusion hole 23 of the cantilever deck 20 is finished with a binding nut 12, so that the cantilever deck 20 is a pier ( 10) can be simply and reliably installed and fixed to the upper edge pier.

For reference, the bridge support integrated cantilever structure according to the present invention, as shown in the installation construction structure of the overall configuration relationship for the cantilever structure in FIG. And a normal drain 43 is constructed and installed so that dirt is normally introduced into the drain pipe 42 installed along the deck side portion 22 of the cantilever deck 20 and discharged to the outside, and the cantilever deck 20 A normal firewall 40 and a slab 41 are installed on the outer deck side portion 22 and the inner deck flat portion 21.

In the bridge support integrated cantilever structure and its construction method according to the present invention according to the composition principle and construction method, the deck fixing support 30 having a bracket function is integrated inside the cantilever structure without using a deck support and fixing bracket. By using the cantilever deck 20 that is inserted and fixed or integrally molded, it is possible to simply mount and bind the cantilever deck 20 to the pier 10 in a single operation process.

This not only enables the orthogonal side of the deck fixing support 30 integrally molded to the cantilever deck 20 to be mounted with the right angle corner of the pier 10 in an accurate dimension, but also a coupling component for installing the cantilever deck 20. can be minimized and the installation of the cantilever structure is possible with a single one-time process operation, thereby minimizing the work man-hours accordingly, thus, the convenience and precision of the work for the construction and installation of the cantilever deck (20) structure for the bridge as well as the work man-hours and cost reduction.

10: pier 11: deck fixing bolt
12: binding nut 20: cantilever deck
21: deck flat part 22: deck side part
23: bolt protrusion through hole 24: bending stirrup
30: deck fixed support 31: upper deck ground
32: pier ground side 33: bolt fastening protrusion
34: intermediate ground protrusion 35: deck ground protrusion
40: firewall 41: slab
42: drain pipe 43; waterspout

Claims (5)

A deck fixing ball SS that is embedded and protrudes at regular intervals at the right angle part of the upper edge of the pier,
On the opposite side of the deck side in the vertical direction, the deck fixing bolt passes through the deck flat in the horizontal direction according to the spacing of the deck fixing bolt, and the bolt protrusion through hole is formed through and bound and fixed with a binding nut. A cantilever deck in which a bent stirrup for binding and strength improvement is installed,
The cross section in both the horizontal and vertical directions is T-shaped so that it can be mounted and installed in contact with the corner right angle part of the side wall of the pier by inserting or integrally formed into the bottom of the cantilever deck in both the horizontal and vertical directions to improve the fixing power and durability of the cantilever structure. A support integrated cantilever structure for a bridge, characterized in that it comprises a deck fixed support. The method of claim 1,
The deck fixing support has an integral structure of the upper part of the deck ground in the horizontal direction and the ground side of the pier in the vertical direction so that it can be supported in contact with the corner right angle part of the side wall of the pier, the cross section is L-shaped, and the deck ground in the middle of the pier The middle ground protrusion in the vertical direction on the same line as the upper part is formed as an integral structure,
In the middle of the upper deck ground in the horizontal direction, a through-bolt fastening protrusion inserted into the deck fixing bolt on the upper side of the pier protrudes through the corresponding bolt protrusion through hole of the cantilever deck. Cantilever structure. The method of claim 2,
The deck fixing support is formed as an integral structure in the middle of the pier grounding side in the vertical direction, and the lower part of the intermediate grounding protrusion is formed inclined toward the outside of the upper part, and the upper part on the horizontal straight line is stably against the deck flat of the cantilever deck. A bridge support integrated cantilever structure, characterized in that the deck grounding stone is expanded and buried inside the concrete slab so that it can be grounded. Deck fixing bolts are embedded and protruded at regular intervals on the right angle part of the upper edge of the pier,
According to the spacing of the deck fixing bolts protruding from the upper side of the piers, the deck fixing bolts pass through the deck flat of the cantilever deck and the bolt protrusion through holes are formed through them so that they can be bound and fixed with a binding nut,
A deck with a T-shaped cross section in both the horizontal and vertical directions on the lower side (bottom) of the deck flat of the cantilever deck, in which a bent stirrup for improving structural strength is installed on the upper side of the deck flat, and is fixed in contact with the edge right angle part of the upper side of the pier The fixed support is inserted or integrally formed,
The cantilever deck, in which the deck fixing support is integrally structured on the deck flat, is inserted into the corresponding bolt protrusion hole for the deck fixing bolt at the upper edge of the pier, and finished with a binding nut, so that the cantilever deck is connected to the upper edge of the pier in a single process. A bridge support integrated cantilever structure construction method, characterized in that it is installed on the part. The method of claim 4,
In the cantilever deck, the deck fixing support is inserted or integrally formed on the lower side of the deck flat, and even in a single process, the cantilever deck is supported in contact with the corner right angle portion of the pier sidewall, and the fixing force of the cantilever structure and In order to improve durability, the deck fixing support, which basically has a T-shaped cross section in both the horizontal and vertical directions, has an integral structure with the upper part of the deck ground in the horizontal direction and the pier ground side in the vertical direction, and the cross section is L-shaped and the pier ground In the middle of the side portion, the intermediate ground protrusion in the vertical direction is formed as an integral structure on the same line as the upper deck ground portion, and in the middle of the upper deck ground portion in the horizontal direction, the deck is fixed while passing through the corresponding bolt protrusion hole of the cantilever deck. A bridge support integral cantilever structure construction method, characterized in that the through bolt fastening protrusion inserted into the bolt protrudes.

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