KR102583155B1 - The continuous rahmen bridge constructed by the hybrid sections that made 2-girder & panel, and constructing method thereof - Google Patents

Abstract

The present invention relates to a two-panel composite continuous Rahmen bridge and a construction method thereof, which greatly improve constructability. The two-panel composite continuous Rahmen bridge comprises: a pair of support units installed at starting and ending point parts of a bridge; a plurality of deadman piles; a bulkhead girder having a strut formed thereon; a two-panel composite structure including a support part and a change part; and a connecting slab.

Description

The continuous rahmen bridge constructed by the hybrid sections that made 2-girder & panel, and constructing method thereof}

The present invention relates to a two-panel composite continuous laamen bridge and its construction method, which includes a vent foundation, upper and lower parts that support the starting and ending points of the bridge with a furniture system consisting of connecting supports and deadman piles with struts, etc. By strengthening and integrating the structure and connecting slabs, the moment redistribution effect is increased through high-order indeterminacy by the multi-continuous laamen structure to control the horizontal and vertical displacement of the bridge, and the structural stability is improved by reducing member forces, while increasing ductility and seismic resistance. This increases the maintenance costs by completely eliminating the supports and expansion joints, and minimizes bulk construction and form installation through the two-panel composite cross section manufactured at the manufacturing site for the bridge superstructure. By doing so, not only does it shorten the construction cost and period, but it also improves construction safety by minimizing manpower input, alleviates global warming by reducing CO ₂ emissions, and secures the creation of a green environment. The two-panel composite continuous Laamen Bridge and its construction. It's about method.

In general, a bridge consists of expansion joints, supports, and inverted T-shaped abutments as the main components of the bridge. It forms a simple beam and continuous beam structural system supported by expansion joints and supports, and the connecting slab is separated from the bridge body. It is installed separately.

The expansion joint device causes problems such as damage to the substructure due to accumulation of dirt, damage, and water leakage, corrosion of the support, and inoperability, which threatens the safety of the bridge and increases maintenance costs, shortening the life cycle of the bridge. there is.

In other words, frequent repairs and replacements lead to increased LCC (Life-Cycle Cost) costs and traffic congestion, which increases social overhead costs and causes environmental pollution problems due to increased carbon emissions.

In addition, the construction cost of existing bridges increases due to massive alternating construction, aesthetics are impaired due to incongruity with the natural terrain, civil complaints are generated due to large-scale earthworks, social indirect costs increase due to traffic detours, and natural river embankments are damaged, causing embankment damage. There is a problem with slope stability.

In addition, due to the increase in the height of the girder and the securing of support installation space, the longitudinal height of the road or complex and the height of the river embankment increase, which causes problems such as worsening accessibility to the access road, spatial disconnection from adjacent villages, and disharmony with the surrounding topography. .

In addition, as the connection slab is installed separately from the bridge main structure, settlement or steps occur on the back of the abutment, which worsens vehicle drivability and causes severe impact, causing damage to the expansion joint.

In order to improve the problems of bridges as described above, girder-type jointless bridges are being applied in countries such as the United States, but the upper structure of the girder-type jointless bridge is a composite of PSC girders and reinforced concrete floor plates, and the upper and lower structures Supports are installed between the bridges, and the beginning and end of the bridge is simply a jointless integral abutment bridge in which the superstructure and the inner beam abutments are rigidly integrated, and the abutments are supported by flexible piles called H-piles. Bridges can partially control damage to expansion joints, but problems caused by supports or separately installed connecting slabs cannot be fundamentally solved.

Recently, in Korea, due to the strengthening of hydraulic regulations due to industrial development and climate change, the girder height has increased due to the increase in span length, and as the longitudinal height of the road has increased, problems such as blocked sight distances, problems of disconnection between villages, and incongruity with the topography have arisen. Therefore, the need to design bridges that improve this is emerging. In addition, the bridge type with existing expansion joints and supports increases logistics costs and congestion costs due to frequent maintenance and replacement, thereby minimizing waste of precious national resources and reducing _CO2 emissions, which is highlighted as a measure to resolve global warming. A bridge format that can solve the problem is needed.

Accordingly, in the past, some of the above problems were solved through the construction of multi-continuous frame integrated composite slab bridges, but these bridges also lack axial and lateral rigidity because the starting and ending points of the bridge are supported through single piles. Excessive deflection and member forces are generated in the central part of the span, and applicability to terrain constructed in the embankment area is reduced, and there is a problem in that economic feasibility, constructability, and environmental feasibility are reduced due to the increase in pile size due to excessive member forces applied to single column piles.

In addition, when constructing the deck or slab of the superstructure of a bridge, except for steel composite girder bridges, the construction period and equipment requirements increase due to the installation of bedding and formwork across the entire width, and the bedding, formwork, and scaffolding work that is the work type at the site. As this increases, the amount of on-site assembled rebar increases, constructability and environmental friendliness deteriorate, construction stability deteriorates, and construction time increases.

Registered Patent No. 10-0983861

The purpose of the present invention to solve the above problems is to strengthen and integrate the upper and lower structures of the bridge and the connecting slab to increase the moment redistribution effect due to high-order irregularity by the multi-continuous frame structure, thereby improving structural stability and ductility. It increases the seismic resistance, and the support and expansion joints can be completely eliminated, thereby significantly reducing maintenance costs. The bridge superstructure composition is constructed and formed in bulk through a two-panel composite cross section manufactured at the manufacturing site. By minimizing installation, it not only reduces construction costs and construction period, but also improves construction safety by minimizing manpower input. It is advantageous in creating a green environment while mitigating global warming due to reduction of CO2 emissions, and by making the start and end of the bridge bridgeless. The purpose of this project is to provide a two-panel composite continuous laamen bridge and its construction method that greatly improves constructability by greatly reducing the ratio of earthworks and ensures slope stability by not disturbing the natural ground.

The present invention, which achieves the above-described object and performs the task of eliminating the drawbacks of the prior art, includes a pair of supports installed at the starting and ending points of a bridge; A plurality of deadman piles installed to be spaced apart from the support portion toward the outside of the bridge; A bulkhead girder that is integrated with the support and installed in the width direction of the bridge, has a plurality of rigid parts protruding from the top, and has struts connected to the deadman piles on the sides; A two-main panel composite structure consisting of a branch part rigidly connected to the rigid part of the partition girder, a central part between the branch parts, and a change part connecting the cross section of the branch part and the cross section of the central part; A connection slab is installed to be integrally connected to the two-main panel composite structure or a floor plate constructed on top of the two-main panel composite structure, and the lower part is configured to be rigidly connected to the deadman pile.

Meanwhile, the present invention includes a pair of supports installed at the starting and ending points of a bridge; A plurality of deadman piles installed to be spaced apart from the support portion toward the outside of the bridge; A bulkhead girder that is integrated with the support and installed in the width direction of the bridge, has a plurality of rigid parts protruding from the top, and has struts connected to the deadman piles on the sides; At least one pier is installed between the partition girders and has a plurality of rigid parts protruding from the upper part; A two-main panel composite structure consisting of a branch part rigidly connected to a rigid part of the bulkhead girder or a pier, a central part between the branch parts, and a change part connecting the cross section of the branch part and the cross section of the central part; A connection slab is installed to be integrally connected to the two-main panel composite structure or a floor plate constructed on top of the two-main panel composite structure, and the lower part is configured to be rigidly connected to the deadman pile.

In addition, the two-main panel composite structure is composed of a box-shaped body with an open top and rigidly coupled to the rigid portion of the partition girder or pier, and primary rigidity-enhancing concrete filled inside the box-shaped body, wherein the box-shaped body A portion of the first rigidity-enhancing concrete is not poured and a steel exposed portion is formed where the box-shaped body is exposed, and a plurality of point portions are rigidly coupled to the rigid portion after being mounted on the rigid portion; A central portion formed between the branch portions and consisting of two central vertical beams and a crossbeam connecting the central vertical beams; It is characterized in that it is configured to include; a change part configured to connect the cross section of the box-shaped body of the branch portion and the central longitudinal beam of the central portion and change the cross section.

In addition, the box-shaped body includes a lower plate rigidly coupled to the rigid portion; a pair of two-main abdominal plates facing each other from the lower plate and extending upward; An upper plate installed at right angles to the abdominal plate at the top of the two-main abdominal plate; It is characterized in that it includes a shear connector installed on the upper part of the lower plate and the upper plate.

In addition, the shear connector connects a pair of abdominal plates that are installed at an angle in a direction facing each other on the lower plate or upper plate of the box-shaped body and have a plurality of through holes, and the upper ends of the abdominal plates and has a plurality of through holes. It is characterized by being composed of a formed upper plate.

In addition, the two-main panel composite structure includes two branch longitudinal beams that are adjacent to each other and have shear connectors installed at the top, and a primary casing concrete that is synthesized with the two branch longitudinal beams by connecting the two branch longitudinal beams. A branch portion in which a steel exposed portion is formed in the lower part of the branch longitudinal beam so that the branch longitudinal beam is exposed without the primary casing concrete being poured so that it can be rigidly coupled to the rigid connection part; A central portion formed between the branch portions and made of primary casing concrete synthesized by connecting two central longitudinal beams on which upper shear connectors are installed and the central longitudinal beams; It is characterized in that it is configured to include; a change part configured to connect the cross-sections of the branch longitudinal beams of the branch portion and the central longitudinal beam of the central portion and change the cross-section.

In addition, the deadman pile is characterized by being configured to include an anti-buoyancy plate attached to the tip of the deadman pile to control the buoyant reaction force.

In addition, it is characterized by installing a tension member so that prestress can be introduced into the two-panel composite structure, and tensioning and anchoring the tension member.

In addition, the support portion is characterized in that it is a plurality of insulating piles installed in the width direction of the bridge.

In addition, the support portion is a lightweight wall constructed in the width direction of the bridge, and the lightweight wall and deadman pile are configured to be connected through a plurality of strut ties.

In addition, the partition girder includes a partition girder body installed to be supported on an upper part of the support part; A rigid portion formed to protrude from an upper portion of the bulkhead girder body to enable the two-main panel composite structure to be simply supported and then strengthened; A rigid reinforcement portion that arranges reinforcing bars in the space between the rigid portion and the two-main panel composite structure and pours concrete so that the entire upper part of the bulkhead girder body is integrated with the two-main panel composite structure to form a laamen structure; A strut is formed to protrude from a side of the bulkhead girder body and is coupled to the deadman pile.

In addition, the rigid portion is partially embedded in the bulkhead girder and the remaining portion is formed to protrude from the upper part of the bulkhead girder, so that it supports the two-main panel composite structure to form a simple support and rigid laamen structure. ; A coupling plate coupled to the upper part of the steel pedestal to rigidly couple it to the two-main panel composite structure 400; In a state fastened to the coupling plate, a portion, like the steel pedestal, is installed to be embedded in the partition girder, and the remaining portion is exposed to the top so that the two-main panel composite structure is fitted and joined to form a simple support and rigid laamen structure. and a plurality of anchor bolts fastened through nuts and washers; A plurality of rigid bolts that strongly couple the coupling plate and the two-panel composite structure to form a laamen structure and are fastened through nuts and washers; It is characterized by being composed including.

In addition, the rigid portion includes a reinforced concrete pedestal formed to protrude from the upper part of the partition girder and supporting the two-main panel composite structure; A coupling part that is fitted to the outside of the reinforced concrete pedestal 340 and allows the two-main panel composite structure to have a simple support and rigid laamen structure; A fixing member that secures the coupling portion from being separated from the reinforced concrete pedestal 340; A plurality of anchor bolts, a portion of which is embedded in the bulkhead girder and the remaining portion exposed to the upper part of the joint, are fitted and joined to the two-main panel composite structure, and are fastened through nuts and washers to form a simple support and rigid lame structure; A plurality of rigid bolts that strongly couple the coupling portion and the two-panel composite structure to form a laamen structure and are fastened through nuts and washers; It is characterized by being composed including.

In addition, the connection slab includes a primary connection slab that is cast simultaneously with the floor plate or the two-main panel composite structure and whose lower part is rigidly coupled to the upper part of the deadman pile; A secondary connection slab installed to be continuous with the first connection slab; It is characterized by comprising a plurality of Gerber hinges that connect the first connection slab and the second connection slab.

In addition, the Gerber hinge is configured to include a hinge plate in which a long hole is formed, a pair of wings formed to be round while surrounding the hinge plate on both sides of the hinge plate, and extending from the center of the hinge plate to connect the secondary connection slab. a first hinge portion made of studs configured to be embedded in; A hinge plate is installed to overlap the hinge plate of the first hinge portion and has a long hole communicating with the long hole, and is rounded on both sides of the hinge plate and is wrapped around the outside of the pair of wings of the first hinge portion. a second hinge portion consisting of a pair of wings formed and a stud configured to extend from the center of the hinge plate and configured to be embedded in the primary connection slab; It is characterized in that it is configured to include; a hinge pin installed to fit into a long hole formed in the hinge plate of the first hinge portion and the second hinge portion.

Meanwhile, the present invention includes a support installation step of installing supports at the starting and ending points of the bridge; A deadman pile installation step of installing a plurality of deadman piles to be spaced apart from the support portion toward the outside of the bridge; A partition girder and strut installation step of installing a partition girder having a plurality of rigid parts protruding from the upper part so as to be integrated with the support part and connecting it to the deadman pile using struts; A two-panel composite structure simple beam mounting step of installing the two-panel composite structure so that it is mounted on the rigid portion of the partition girders on both sides; A step of rigidly combining the two-main panel composite structure and the partition girder by strengthening the two-main panel composite structure mounted on the rigid part and the rigid part so that the two-main panel composite structure is rigidly coupled to the partition girders; A backfilling step of backfilling the backside of the bulkhead girder; A temporary material installation step of installing braces and formwork between the two-panel composite structure; A floor plate and connection slab installation step of assembling rebar and pouring concrete so that a connection slab is continuous with the upper floor plate of the two-main panel composite structure and the floor plate, and a deadman pile is rigidly coupled to the bottom of the connection slab; It is characterized by being composed including.

Meanwhile, the present invention includes a support installation step of installing supports at the starting and ending points of the bridge; A deadman pile installation step of installing a plurality of deadman piles to be spaced apart from the support portion toward the outside of the bridge; A partition girder and strut installation step of installing a partition girder having a plurality of rigid parts protruding from the upper part so as to be integrated with the support part and connecting it to the deadman pile using struts; A pier installation step of installing one or more piers between the bulkhead girders, wherein a pier having a protruding rigid portion is formed on an upper part of the piers; A two-main panel composite structure mounting step of installing the two-main panel composite structure to be mounted on the rigid portion of the partition girder or pier; A step of rigidly combining the two-main panel composite structure and the partition girder by strengthening the two-main panel composite structure mounted on the rigid part and the rigid part so that the two-main panel composite structure is rigidly coupled to the partition girder and the pier; A backfilling step of backfilling the backside of the bulkhead girder; A temporary material installation step of installing braces and formwork between the two-panel composite structure; A floor plate on the upper part of the two-main panel composite structure and a connection slab continuous with the floor plate, and a floor plate and connection slab for assembling rebar and pouring concrete so that deadman piles are rigidly coupled to the bottom of the connection slab 500. It is characterized in that it includes an installation step.

The present invention, as described above, allows rapid construction by simply and quickly installing the two-panel composite structure after mounting the partition wall girder in a pre-fabricated state, minimizing on-site construction, and reducing the use of braces and formwork. It is easy to construct and has the effect of shortening construction time.

In addition, by strengthening and integrating the superstructure, substructure, and connecting slab to form a multi-continuous frame structural system, the moment redistribution effect is high and the high-order negative structure has a high stability and ductility structural system.

In this way, a high-order negative structure and a bent foundation are formed through the combination of the support portion and the bulkhead girder strut connection slab at the beginning and end of the bridge, and the continuous and laamen structural system is completed, which has the effect of reducing the deflection and moment of the central part. .

In addition, the vent-based furniture structure can be made lighter than the diameter of the pile used in conventional no-shift piles, making construction easier and material costs reduced.

In addition, by rigidly connecting the two-panel composite structure that makes up the superstructure to the bulkhead girder, a Laamen bridge with a multi-continuous frame structure is constructed, which is effective in significantly reducing construction costs by reducing the use of bearings and expansion joints.

In addition, it has the effect of reducing maintenance costs due to non-supporting and non-expansion joints.

In addition, the multi-continuous lamen structure minimizes supports and expansion joints, which has the effect of reducing construction costs.

In addition, it is effective to build a two-panel composite structure with a composite slab that combines steel structure, PSC, and RC principles to minimize the girder height.

In addition, by combining the partition girder, connected slab, deadman pile, and strut, the lateral rigidity is increased, which has the effect of reducing the positive moment and deflection at the center of the span and the member force acting on the single pile.

In addition, regardless of the length of the connected slab, there is an effect of controlling the limiting range by installing a Gerber hinge at a certain position of the connected slab.

Figure 1 is an example showing a vent foundation-supported two-panel composite continuous laamen bridge according to the present invention;
Figure 2 is a plan view showing a vent foundation-supported two-panel composite continuous laamen bridge according to the present invention;
Figure 3 is an illustration showing a vent foundation-supported two-panel composite type continuous laamen bridge in the form of a continuous span according to the present invention;
Figure 4 is a perspective view showing a vent foundation support structure in which a bulkhead girder and deadman piles reinforced to the support portion according to the present invention are combined by struts;
Figure 5 is another example showing a vent system-supported two-panel composite continuous laamen bridge constructed in the embankment according to the present invention;
Figure 6 is an example showing a state in which a two-main panel composite structure is coupled to a rigid portion according to the first embodiment of the present invention;
Figure 7 is an example showing a state in which a two-main panel composite structure is coupled to a rigid portion according to the second embodiment of the present invention;
Figure 8 is an illustration showing the cross-sectional shape of the point portion and central portion of the two-main panel composite structure according to the first embodiment of the present invention;
Figure 9 is an exemplary diagram showing the cross-sectional shape of a bridge steel composite superstructure using a two-main panel composite structure according to the first embodiment of the present invention;
Figure 10 is an illustration showing the exposed steel portion of the two-main panel composite structure according to the first embodiment of the present invention;
Figure 11 is an illustration showing the cross-sectional shape of the point portion and central portion of the two-main panel composite structure according to the second embodiment of the present invention;
Figure 12 is an example diagram showing the shape of the steel exposed portion in the two-main panel composite structure according to the second embodiment of the present invention;
Figure 13 is an exemplary diagram showing the cross-sectional shape of a bridge concrete composite superstructure using a two-main panel composite structure according to the second embodiment of the present invention;
14 is an exemplary diagram showing the Gerber hinge of the present invention;
Figure 15 is an exemplary diagram showing the state in which prestress is introduced in the two-panel composite continuous laamen bridge of the present invention.

Hereinafter, the configuration of an embodiment of the present invention and its operation will be described in detail in connection with the attached drawings. Additionally, in describing the present invention, if a detailed description of a related known function or configuration is judged to unnecessarily obscure the gist of the present invention, the detailed description will be omitted.

Figure 1 is an illustration showing a vent foundation-supported two-panel composite type continuous laamen bridge according to the present invention, and Figure 2 is a plan view showing a vent foundation-supported two-panel composite type continuous laamen bridge according to the present invention. , Figure 3 is an illustration showing a continuous span-type vented foundation-supported two-panel composite continuous laamen bridge according to the present invention, and Figure 4 shows the bulkhead girder and deadman piles reinforced in the support part according to the present invention by struts. A perspective view showing the combined vent foundation support structure, Figure 5 is another illustration showing a vent system-supported two-panel composite continuous laamen bridge constructed in the embankment according to the present invention,

As shown in the drawing, the present invention includes a pair of supports 100 installed at the start and end points of a bridge, the supports 100 being installed to be spaced apart from each other in the outer direction of the start and end points of the bridge, and a tip portion for controlling negative reaction force. A plurality of insulated deadman piles 200 to which a buoyancy prevention plate 210 is attached and integrated with the support portion 100 are installed in the width direction of the bridge, and a plurality of rigid portions 320 are protruding at the top. The space between the top of the bulkhead girder body 310 and the two-main panel composite structure 400 is integrated into the rigid reinforcement portion 321 by the protruding rigid portion 320, and the deadman pile 200 is located on the side. The bulkhead girder 300 is formed with a strut 370 connected to the girder, and both ends are mounted on the stiffening portion 320 of the bulkhead girder 300 to perform work such as camber adjustment in a simple support state and then harden. A two-main panel composite structure 400 that is installed to be connected, but configured so that steel is exposed at the bottom of both sides for a rigid connection with the rigid portion 320, and the two-main panel composite structure 400 or the two-main panel composite structure It is installed to be integrally connected to the floor plate 700 constructed on the upper part of (400) and is configured to include a connection slab 500 configured to be rigidly connected to the deadman pile 200, thereby supporting a continuous laamen structure for the vent foundation. You will have

In addition, as shown in FIG. 3, when the bridge length between the start and end points of the bridge is long, at least one pier 600 is further installed between the start and end points of the bridge to form a bridge structure in the form of a continuous span, and the piers ( A stiffening portion 610 is protrudingly formed on the upper part of 600 for fastening to the two-main panel composite structure 400.

Meanwhile, the partition girder 300, deadman pile 200, connection slab 500, and strut 370 supported on the support portion 100 are rigidly or combined with each other to form a vent foundation, and the members are assembled and strengthened with each other. By being supported by a furniture system in the form of a furniture, it controls the horizontal and vertical displacement of the superstructure (A) including the two-panel composite structure 400 and reduces the member force of the superstructure (A), Strengthens earthquake resistance.

As described above, in the present invention, the support portion 100, the partition girder 300, the deadman pile 200, the two-main panel composite structure 400, and the connection slab 500 continuously connected to the superstructure (A) are combined with each other. It forms a furniture-shaped support vent foundation by forming a continuous span, and the two-panel composite structure 400 is strengthened to the upper part of the partition girder 300 and the pier 600 to form a continuous laamen system.

The support portion 100 may be composed of a plurality of insulating piles 110 installed into the ground along the width direction of the bridge, as shown in FIGS. 1, 2, 3, and 4.

The insulated pile 110 is an insulated pile (110) that can be installed in the ground without separate embankment work or deep digging work at the start and end points when the difference between the ground level and the bridge plan height is small and it is possible to construct the pile in an underground state similar to the ground level. 110) can be constructed to form a support portion 100.

These insulated piles (110) are lighter than the diameter of piles used in conventional no-shift abutments due to the vent foundation support furniture structure, while significantly reducing the vertical and horizontal deflections of the upper and lower structures, and increasing usability through a high indefinite order structural system. Improves earthquake resistance.

Meanwhile, the deadman pile 200 is constructed by attaching a buoyancy prevention plate 210 to the tip of the deadman pile 200, inserting it into the drilling hole, and filling the drilling hole with concrete in the process of installing the deadman pile 200, so that the deadman pile 200 is horizontal. It improves ground modulus, passive earth pressure, and friction, and pullout resistance improves.

Meanwhile, the support portion 100 may be composed of a lightweight wall 120 installed along the width direction at the starting and ending point of the bridge, as shown in FIG. 5.

The lightweight wall 120 is installed when the fill ground has a large difference between the ground elevation and the bridge plan height, and the lightweight wall 120 installed in this way is connected to each other through the deadman pile 200 and the strut tie 220. Make sure that filling is done while connecting.

In addition, the two-main panel composite structure 400 and the continuously connected connection slab 500 are combined with each other to form a furniture-shaped vent foundation support structure, and the two-main panel composite structure 400 is strengthened on the upper part of the partition girder 300. This forms a continuous laamen system.

In this way, the lightweight wall 120 can be formed into a multi-family structure by means of the vent foundation support structure, and thus the thickness can be reduced compared to the conventional abutment and foundation to reduce the weight.

In addition, the lightweight wall 120 is installed by installing lightweight piles 121 in the ground, installing a lightweight foundation plate 122 on top of the lightweight piles 121, and then supporting it on the lightweight foundation plate 122. .

Meanwhile, a plurality of deadman piles 200 are installed to be spaced apart from each other along the width direction of the bridge, and are combined through the partition girder 300 and strut 370 as shown in FIG. 1, or are installed as a lightweight wall (as shown in FIG. 5). 120) and a plurality of strut ties 220, and the upper end is strengthened to the connection slab 500, thereby connecting the partition girder 300, the connection slab 500, and the deadman pile 200 to form furniture. .

Meanwhile, the partition girder 300 includes a partition girder body 310 installed on the upper part of the insulating pile 110 or the lightweight wall 120 constituting the support part 100, and a partition girder body 310 that protrudes from the upper part of the partition girder body 310. A rigid portion 320 formed so as to enable the two-main panel composite structure 400 to be strengthened, and a partition girder body 310 and a two-main panel composite structure 400 so that the rigid portion 320 can be embedded. ), reinforcing bars are placed in the space between and concrete is poured so that the entire upper part of the bulkhead girder body 310 is integrated with the two-main panel composite structure 400, forming a laamen structure; It is configured to include a strut 370 that protrudes from the side of the bulkhead girder body 310 and is coupled to the deadman pile 200.

The partition girder 300 is made of a reinforced concrete (RC) structure, and the strut 370 connected to the deadman pile 200 is also made of a reinforced concrete (RC) structure.

Meanwhile, the rigid portion 320 is installed so that a portion is buried inside the bulkhead girder body 310, as shown in FIG. 6, and the remaining portion protrudes toward the upper direction of the bulkhead girder body 310, forming the two-main panel composite. The structure 400 and a steel pedestal 330 that enable a simple support and rigid laamen structure are welded to the upper part of the steel pedestal 330 to strengthen the two-main panel composite structure 400. A coupling plate 331 for coupling is installed, and a portion of the inside of the center of the steel pedestal 330, which is integrated with the coupling plate 331, is installed to be embedded in the bulkhead girder body 310, and the remaining portion is installed. A plurality of anchor bolts 355 are exposed at the top and the two-panel composite structure is fitted and connected to form a simple support and rigid lame structure and fastened through nuts 354 and washers, and the steel pedestal 330 ) The coupling plate 331 protruding in the outward direction is strongly coupled to the two-main panel composite structure 400 to form a laamen structure, and a plurality of rigid bolts 353 are fastened through nuts 354 and washers, and It is configured to include a pad 380 that is interposed between the coupling plate 331 and the two-main panel composite structure 400 to simply support the two-main panel composite structure 400 when it is mounted.

The rigid reinforcement portion 321 is formed between the upper part of the bulkhead girder body 310 and the two-main panel composite structure 400 by the steel pedestal 330 protruding toward the upper direction of the bulkhead girder body 310. The space is poured with rebar and concrete to integrate it with the two-main panel composite structure 400 to form a laamen structure.

The steel pedestal 330 constituting the rigid portion 320 can be made of a normal H beam, and a plurality of studs 332 are installed on the flange and abdomen of the H beam to form the steel pedestal 330. and ensures that it can be stably installed on the bulkhead girder body 310.

The coupling plate 331 constituting the rigid portion 320 is installed by welding and integrated so as to protrude from both sides of the upper shear surface of the steel pedestal 330, ensuring strong coupling with the two-main panel composite structure 400. Allow it to be installed.

In addition, the coupling plate 331 of the rigid portion 320 has a long hole to enable a roller hinge function when fastening a plurality of anchor bolts 355 arranged around the central axis of the rigid portion and mounting the two-main panel composite structure 400. (331a) is formed, and a long hole 381 corresponding to the long hole 331a is also formed in the pad 380.

In addition, a bracket reinforcement plate 390 may be further installed on the steel pedestal 330 to alleviate stress concentration phenomenon when mounting and strengthening the two-main panel composite structure 400.

As described above, the camber and linearity are adjusted in a state in which the two-main panel composite structure 400 is simply mounted, and then a floor plate or secondary rigidity is installed on the top of the panel or upper plate of the two-main panel composite structure 400. Before pouring the reinforced concrete 415a, the anchor bolts 355 are tightened to strengthen the two-main panel composite structure 400 and the partition girder 300 to structure the laamen, and the two-main panel composite structure 400 and A plurality of rigid bolts 353 arranged on the pedestal outer coupling plate 331 are rigidly fastened so that the rigid portions are integrated and connected, and the steel pedestal 330 protrudes toward the upper part of the bulkhead girder body 310. Steel reinforcement and concrete are poured into the space formed between the upper part of the bulkhead girder body 310 and the two-main panel composite structure 400 to form a rigid reinforcement portion 321, so that it is integrated with the two-main panel composite structure 400.

In addition, the rigid portion 320 is formed to protrude upward from the top of the partition girder body 310, as shown in FIG. 7, and is a reinforced concrete pedestal 340 that supports the two-main panel composite structure 400. and a coupling portion 350 that is fitted to the outside of the reinforced concrete pedestal 340 and allows the two-main panel composite structure 400 to form a simple supporting and rigid lame structure, and the coupling portion. A fixing member 360 that prevents 350 from being separated from the reinforced concrete pedestal 340, a portion of which is embedded in the partition girder 300, and the remaining portion is exposed to the upper part of the coupling portion 350. A plurality of anchor bolts 355 that fit and connect the two-main panel composite structure 400 and fasten it through nuts and washers to form a simple support and rigid lame structure, and the coupling portion 350 and the two-main panel composite structure (400) is strongly coupled to form a laamen structure, and a plurality of rigid bolts (353) are fastened through nuts and washers, and are interposed between the coupling portion (350) and the two-member panel composite structure (400) to form the two-member structure. It is composed of a pad 380 that provides simple support when the panel composite structure 400 is mounted.

The rigid reinforcement portion 321 is between the upper part of the bulkhead girder body 310 and the two-main panel composite structure 400 by the reinforced concrete pedestal 340 protruding toward the upper part of the bulkhead girder body 310. Reinforcing bars and concrete are poured into the formed space so that the joint portion 350 is buried and integrated with the two-main panel composite structure 400 to form a laamen structure.

The reinforced concrete pedestal 340 is configured to protrude upward while being integrated with the bulkhead girder body 310 during the construction of the reinforced concrete structure bulkhead girder body 310.

The coupling portion 350 is installed to cover the outside of the reinforced concrete pedestal 340 so that the reinforced concrete pedestal 340 of the reinforced concrete structure can be rigidly coupled to the two-main panel composite structure 400. An upper plate 351 that covers the upper surface of the reinforced concrete pedestal 340 and is rigidly coupled to the two-main panel composite structure 400 through anchor bolts 355 and stiffening bolts 353, It is composed of a plurality of lower plates 352 that protrude downward from the upper plate 351 and are inserted into the outside of the reinforced concrete pedestal 340.

Among the rigid portions 320, the upper plate 351 of one rigid portion 320 has a long hole 351a to enable a roller hinge function when fastening the anchor bolt 355 and mounting the two-main panel composite structure 400. A long hole 381 corresponding to the long hole is formed in the pad 380.

The fixing member 360 is composed of a bolt penetrating the lower plate 352 of the coupling portion 350 and the reinforced concrete pedestal 340, and a nut fastened to the bolt, thereby attaching the coupling portion 350 to the reinforced concrete pedestal. It is fixed to the desktop (340).

At this time, a through hole is formed in advance in the reinforced concrete pedestal 340 so that the bolt of the fixing member 360 that secures the coupling portion 350 can be fastened.

Meanwhile, Figure 8 is an illustration showing the cross-sectional shape of the point portion and central portion of the two-main panel composite structure according to the first embodiment of the present invention, and Figure 9 is an illustration using the two-main panel composite structure according to the first embodiment of the present invention. This is an example diagram showing the cross-sectional shape of the bridge steel composite superstructure,

Meanwhile, as shown in Figures 8 and 9, the two-main panel composite structure according to the first embodiment is composed of a steel composite structure, and the two-main panel composite structure 400 is located at the starting and ending point of the bridge and the section near the pier, such as (a). It includes a branch portion 410, a central portion 420 of the central section of the span as shown in (b), and a change portion 430 connecting the cross section of the branch portion 410 and the central section 420 shown in FIG. It is composed by:

The branch portion 410 includes a box-shaped body 411 that has an open top and is rigidly coupled to the rigid portion 320 of the partition girder 300 or the rigid portion 610 of the pier 600, and the box-shaped body 411 ) is composed of primary rigidity-enhancing concrete (415) filled inside.

The box-shaped body 411 includes a lower plate 412 that is rigidly coupled to the rigid portions 320 and 610, and a pair of two-main abdominal plates 413 facing each other and extending upward from the lower plate 412. And, an upper plate 414 installed to be perpendicular to the abdominal plate 413 at the upper part of the two-main abdominal plate 413, and a shear connector 440 installed on the upper part of the lower plate 412 and the upper plate 414. It is configured so that the upper part is open.

Meanwhile, in the branch portion 410, as shown in FIG. 10, a steel exposed portion is formed in a portion of the box-shaped body 411 where the box-shaped body 411 is exposed without the primary rigidity-enhancing concrete 415 being poured, thereby forming the rigid portion ( 320) and can be rigidly coupled through the anchor bolt 355 and rigid bolt 353.

The lower plate 412 is formed to protrude to the outside of the abdominal plate 413 to facilitate installation of floor plates or bulkhead concrete pouring bars and forms between the two main panel composite structures, or to install anchor bolts ( 355) and a wing portion 412a that can be coupled to the rigid bolt 353 may be formed.

A long hole 412b is formed in the wing portion 412a to enable a roller hinge function when the anchor bolt 355 is installed and the two-main panel composite structure 400 is mounted, and a bolt hole for fastening the rigid bolt 353 is provided. This is formed.

The shear connector 440 is composed of a regular stud, or is installed at an angle in the direction facing each other on the lower plate 412 or the upper plate 414 of the box-shaped body 411, and a plurality of through holes 443 are formed. It can be composed of a cap pub board consisting of a pair of abdominal plates 441 and an upper plate 442 that connects the upper ends of the abdominal plates 441 and has a plurality of through holes 443.

This shear connector 440 improves the bending rigidity and shear strength of the box-shaped body 411, and when installing the cap pub board, rebar can be placed through the through hole 443, making it easy to install rebar.

Meanwhile, the central portion 420 is composed of two central longitudinal beams 421 connected to the box-shaped body 411 of the branch portion 410 and a reinforcing member 422 connecting the central longitudinal beams 421.

The reinforcing material 422 can be configured in various forms, such as crossbeams or bracing, and can be arranged at regular intervals.

The central longitudinal beam 421 of the central portion 420 may be generally configured as an I-beam, and the center of the I-beam abdominal plate, the center of the abdominal plate 413 of the box-shaped body 411, and the center of the abdominal plate of the change portion 430 coincide and are continuous. Through integration, the cross section of the two-panel composite structure is constructed.

The change section 430 is composed of a change cross section connecting the cross section of the box-shaped body 411 of the branch portion and the cross section of the central longitudinal beam 421 of the central portion 420.

The steel constituting the two-panel composite structure 400 may be composed of only assembled steel or a mixture of assembled steel and rolled steel.

The two-panel composite structure (400) constructed as above is installed at regular intervals of the bridge width to form a laamen structure by simply supporting and strengthening it as shown in Figures 6 and 7, and then after installing the braces and formwork, secondary rigidity-enhancing concrete (415a) is installed. ) and floor plate reinforcement and concrete are poured to create the cross-section of the bridge superstructure.

The bridge superstructure (A) configuration is erected in bulk through the two-main panel cross-section manufactured at the manufacturing site, and the formwork, etc. is omitted or minimized to pour the floor plate, etc., thereby not only reducing construction costs and construction period, but also minimizing labor input. Let's improve safety.

The two-panel composite structure 400 according to this first embodiment has a rigid portion 320 on the lower plate 412 and the wing portion 412a of the box-shaped body 411 exposed by the steel exposed portion 411a. The coupling plate 331 is configured to be rigidly coupled through anchor bolts 355 and rigid bolts 353.

In addition, in order to alleviate the stress concentration phenomenon that occurs in the rigidity of the branch portion 410 and the joint portion with the rigid portion 320, an additional vertical reinforcing plate 417 can be installed, and an additional bracket reinforcing plate 417a can be installed. there is.

In addition, a horizontal reinforcing plate 416 can be further installed on the abdominal plate 413 of the box-shaped body 411 and rigidly coupled through anchor bolts 355 and stiffening bolts 353.

In addition, the rigidity of the rigid portion can be improved by coupling the vertical reinforcing plate 417 to the abdominal plate 413 so as to intersect the horizontal reinforcing plate 416.

In addition, the anchor bolts 355 and stiffening bolts 353 extend through the lower plate 412 of the two-main panel composite structure 400 and are then fastened to the upper plate 414, or when the height of the abdominal plate 413 is high. It can be fastened to the horizontal reinforcement plate 416.

Figure 11 is an illustration showing the cross-sectional shape of the point portion and central portion of the two-main panel composite structure according to the second embodiment of the present invention, and Figure 12 is an illustration of the exposed steel material in the two-main panel composite structure according to the second embodiment of the present invention. Figure 13 is an exemplary diagram showing the shape of a bridge concrete composite superstructure using a two-main panel composite structure according to the second embodiment of the present invention.

As shown in the drawing, the two-main panel composite structure 400 according to the second embodiment is mounted on the rigid portion 320 of the bridge substructure (B) as shown in (a) and then has a pair of branch portions ( 410), a central portion 420 connecting the branch portions 410 as shown in (b), and a change portion 430 that adjusts the cross section of the branch portion and the cross-sectional specifications of the central portion.

The branch portion 410 includes two neighboring branch longitudinal beams 418 and a primary casing concrete 419 that is synthesized with the two branch longitudinal beams 418 by connecting the two branch longitudinal beams 418. However, a steel exposed portion 418d is formed in which the lower part of the branch longitudinal beam 418 is partially exposed so that it can be rigidly coupled to the rigid portion 320 of the partition girder 300.

The branch longitudinal beam 418 includes an upper plate 418a and a lower plate 418b spaced apart from each other upward and downward, and a abdominal plate 418c connecting the centers of the upper plate 418a and the lower plate 418b. A shear connector 440 may be installed on the upper plate 418a.

The shear connector 440 can be installed in various forms, such as the stud or capped board described above, and when structurally improving bending rigidity, it is preferable to install the capped board.

Additionally, a plate-type shear connector 440 can be installed on the lower plate 418b.

The central portion 420 is synthesized by connecting the two neighboring central longitudinal beams 421, which are combined with the branch longitudinal beams 418 of the branch portion 410 and the change portion 430, and the two central longitudinal beams 421. It is composed of a primary casing concrete (419).

The change portion 430 has a change cross section connecting the cross section of the branch longitudinal beam 418 of the branch portion and the cross section of the central longitudinal beam 421 of the central portion 420.

The central longitudinal beam 421 of the branch portion 410, the central portion 420, and the transition portion 430 can be generally composed of I beams, and two I-beam abdominal plates for each section are joined by primary casing concrete 419. The centers coincide and form a cross-section of the two-panel composite structure through continuous integration.

As in the first embodiment, the lower plate 418b of the branch longitudinal beam 418 is provided with a long hole 418e and a steel reinforcement for fastening the anchor bolt 355 to enable a roller hinge function when mounting the two-main panel composite structure 400. A bolt hole is formed to enable fastening of the rigid bolt 353.

The steel constituting the two-panel composite structure 400 may be composed of only assembled steel and rolled steel, or may be composed of a mixture of assembled steel and rolled steel.

The two-panel composite structure (400) constructed as above is installed at regular intervals of the bridge width to form a laamen structure by simply supporting and strengthening it as shown in Figures 6 and 7, and then after installing the braces and formwork, secondary rigidity-enhancing concrete (415a) is installed. ) and bottom plate reinforcement and concrete are poured to create a cross-section of the bridge reinforcement and prestressed concrete composite superstructure using the two-panel composite structure (400).

By constructing the above bridge superstructure in batches using two-panel cross-sections manufactured at the manufacturing site, and omitting or minimizing formwork, etc., and pouring floor plates, etc., not only is construction cost and construction period shortened, but construction safety is improved by minimizing manpower input. Let them do it.

Meanwhile, the present invention can be configured to introduce prestress by installing and tensioning the primary tension member 450 in the primary casing concrete 419 of the central portion 420, as shown in FIG. 15.

In addition, if necessary, a secondary tension member 460 is installed in the concrete 419 at the branch portion 410 to establish tension, thereby introducing prestress.

The primary tension member 450 and the secondary tension member 460 may be composed of PSC steel strands.

Meanwhile, the connection slab 500 is poured simultaneously with the floor plate or two-panel composite structure constructed on the upper part of the two-panel composite structure 400, as shown in Figures 1, 2, 3, and 5, and the lower part is the deadman pile. A primary connection slab 510 rigidly coupled to the upper part of (200), a secondary connection slab 520 installed to be continuous with the primary connection slab 510, and the primary connection slab 510 and 2 It is composed of a plurality of Gerber hinges 530 that connect the primary connection slab 520 with hinges.

The Gerber hinge 530 overlaps the first hinge portion 540 installed on the secondary connection slab 520 as shown in FIG. 14 and is connected to the primary connection slab 510. ) and a hinge pin 551 that is inserted into and connects the first hinge portion 540 and the second hinge portion 550.

The first hinge portion 540 includes a hinge plate 541 having a long hole 542 formed thereon, and a pair of wings 543 formed to be round and surrounding the hinge plate 541 on both sides of the hinge plate 541. and a stud 544 that extends from the center of the hinge plate 541 and is embedded in the secondary connection slab 520.

The second hinge portion 550 includes a hinge plate 551 installed to overlap the hinge plate 541 of the first hinge portion 540 and having a long hole 552 in communication with the long hole 542, A pair of wings 553 formed in a round shape while surrounding the wings 543 of the first hinge portion 540 on both sides of the hinge plate 551, and extending from the center of the hinge plate 551. It consists of a stud 554 that is configured to be embedded in the primary connection slab 510.

The hinge pin 560 is inserted into the long holes 542 and 552 formed in the hinge plates 541 and 551 of the first hinge portion 540 and the second hinge portion 550 to form the first hinge portion 540. and the second hinge portion 550) are connected to each other.

In addition, the hinge pin 560 is installed to be inserted into the hinge cap 570 inserted into the long hole 542 and 552, and a rust preventive agent such as grease can be oiled into the hinge cap 570.

This Gerber hinge 500 generates a gap equal to the length of the long hole 542 and 552 to control the upward displacement and expansion amount of the connection slab 500.

The connected slab 500 constructed in this way is connected to the bridge superstructure and serves as an extended beam among the continuous beam structural systems, thereby significantly reducing the member force and deflection of the main structure, thereby promoting economic efficiency and safety.

In addition, by making it jointless, it has the effect of reducing construction costs, improving drivability, and significantly reducing maintenance costs.

In addition, by strengthening the bulkhead girder and superstructure to form a continuous laamen structure, no abutment or support is achieved, which significantly reduces the member force and deflection of the main body structure, promoting economic efficiency and safety, improving drivability, and significantly reducing maintenance. .

Meanwhile, the construction process of the first embodiment of the two-panel composite structure composite continuous Laamen bridge of the present invention configured as described above is a process of constructing a short span type Laamen bridge,

A support installation step of installing a support portion 100 at the starting and end points of the bridge, a deadman pile installation step of installing a plurality of deadman piles 200 to be spaced apart from the support portion 100 in the outer direction of the bridge, A partition girder 300 having a plurality of rigid parts 320 protruding from the upper part to be integrated with the support part 100 is installed and connected to the deadman pile 200 using struts 370. A strut installation step, a two-panel composite structure simple beam mounting step of installing the two-panel composite structure 400 to be mounted on the rigid portion 320 of the partition girder 300 on both sides, and the rigid portion 320 Rigidly combining the two-main panel composite structure and the bulkhead girder to rigidly couple the two-main panel composite structure 400 to the partition girders 300 by strengthening the two-main panel composite structure 400 and the rigid portion 320 mounted on it. A step of backfilling the back of the partition girder 400, a temporary material installation step of installing berms and formwork between the two-main panel composite structure 400, and the two-main panel composite structure ( Assembling rebar so that the connection slab 500 is continuous with the floor plate 700 on the upper part of the panel 400 and the floor plate 700, and the deadman pile 200 is rigidly coupled to the bottom of the connection slab 500. It consists of the floor plate and connecting slab installation steps for pouring concrete.

The support installation step is a process of installing the support part 100 at the starting and ending points of the bridge. If the difference between the ground level and the planned bridge height is small and construction of the pile is possible, the insulating pile 110 is installed without separate embankment work. It is accomplished through installation and construction.

In addition, in the support installation stage, if the fill ground has a large difference between the ground and the bridge plan height, a lightweight wall 120 is installed and constructed, and a lightweight foundation can be constructed at the lower part of the lightweight wall 120 to support it.

The deadman pile installation step is a process of installing a plurality of deadman piles 200 to be spaced apart from the support portion 100 toward the outside of the starting and ending point of the bridge.

In addition, when constructing the support part 100 with the lightweight wall 120, the lightweight wall 120 and the deadman pile 200 are installed to be connected through the strut tie 220 while the embankment work is performed.

In the bulkhead girder and strut installation step, the bulkhead girder 300, which has a plurality of rigid parts 320 protruding from the upper part, is installed to be integrally supported on the support part 100, and a deadman pile is installed at the bottom of the bulkhead girder 300. This is a process of installing a strut 370 protruding in the (200) direction and connecting the middle portion of the strut 370 and the deadman pile 200.

The simple beam mounting step of the two-main panel composite structure is installed so that the branch portion 410 of the two-main panel composite structure 400 is mounted on the rigid portion 320, and the two-main panel composite structure 400 is installed in the rigid portion ( It is placed on the pad 380 of 320, and the anchor bolt 355 installed in the rigid portion 320 is inserted into the long hole and fastened with a nut to form a simple support structure capable of a roller hinge function.

The two-main panel composite structure 400 is composed of a branch part 410, a central part 420, and a change part 430, and is raised and mounted in a pre-manufactured state, and in this way, the two-main panel composite structure is formed. (400) When mounted, a simple beam structural system is constructed as above.

In addition, the two-main panel composite structure 400 mounted as described above can be composed of the two-main panel composite structure 400 of the first and second embodiments, and the two-main panel composite structure 400 according to the second embodiment. ) can also be configured by introducing prestress.

The step of rigidly combining the two-main panel composite structure and the partition wall girder strengthens the branch portion 410 and the rigid part 320 of the two-main panel composite structure 400 mounted on the rigid part 320 to form the partition wall girder 300. This is a process to ensure that the two-main panel composite structure 400 is tightly coupled.

At this time, the branch portion and the rigid portion 320 of the two-main panel composite structure 400 are rigidly coupled using a plurality of rigid bolts 353, and the two-main panel composite structure 400 of the first embodiment is rigidly coupled. In this case, the lower plate 412 and the wing portion 412a of the box-shaped body 411 and the rigid portion 320 are rigidly coupled by fastening the rigid bolt 353 and the nut 354.

In addition, when stiffening the two-main panel composite structure 400 according to the second embodiment, the lower plate 418b of the branch longitudinal beam 418 and the stiffening portion 320 are fastened with stiffening bolts 353 and nuts 354. joins tightly.

In addition, after strongly coupling the branch portion 410 and the rigid portion 320 of the two-main panel composite structure 400, the upper end of the partition girder body 310 and the two-main panel composite structure ( Reinforcing bars are placed in the space between the branch portions 410 of 400) and concrete is poured to integrate them into a rigid reinforcement portion 321.

In the step of backfilling the rear surface of the partition girder, the rear surface of the partition girder 300 is backfilled so that the strut 370 and the deadman pile 200 connected to the strut 370 are buried.

The temporary material installation step is a process of installing braces and formwork between the two-main panel composite structure 400.

In the floor plate and connection slab installation step, concrete is poured on the upper part of the formwork and the two-main panel composite structure 400 to construct the floor plate 700, and the connection slab 500 is constructed to be continuous with the floor plate 700. However, this is a construction process in which the deadman pile (200) is tightly coupled to the bottom of the connection slab (500).

The process of constructing the connected slab 500 is completed by installing the primary connected slab 510 so as to be continuous with the floor plate 700, or by connecting the primary connected slab 510 and the Gerber hinge 530. Construction can be done by additionally installing a secondary connection slab 520 to connect through.

In this way, a continuous laamen structural system is completed through the combination of the support portion 100, the partition girder 300, the superstructure including the two-main panel composite structure 400, and the connection slab 500 at the beginning and end of the bridge. will be.

Meanwhile, the construction process of the second embodiment of the two-panel composite structure composite continuous Laamen bridge of the present invention configured as described above is a process of constructing a multi-span Laamen bridge, and includes a support portion ( 100), a deadman pile installation step of installing a plurality of deadman piles 200 to be spaced apart from the support 100 in the outer direction of the bridge, and an upper part so as to be integrated with the support 100. A partition girder and strut installation step of installing a partition girder 300 in which a plurality of rigid parts 320 are protruding and connecting it to the deadman pile 200 using a strut 370, and the partition girder ( A pier installation step of installing one or more piers 600 between the piers 600, and installing a pier 610 on which a rigid portion 610 protruding upward is formed on the top of the piers 600; , a two-main panel composite structure mounting step of installing the two-main panel composite structure 400 to be mounted on the rigid portions 320 and 610 of the partition girder 300 or the pier 600, and the rigid portion 320 The two-main panel composite structure 400 and the rigid portions 320 and 610 mounted on (610) are strengthened so that the two-main panel composite structure 400 is rigidly coupled to the partition girder 300 and the pier 600. A step of rigidly combining the two-main panel composite structure and the partition wall girder, a step of backfilling the back of the partition girder (400), and installation of temporary materials to install bedding and formwork between the two-main panel composite structure (400). A step, a bottom plate 700 on the top of the panel of the two-main panel composite structure 400, a connection slab 500 continuous with the bottom plate 700, and a deadman pile at the bottom of the connection slab 500. (200) includes the steps of assembling rebar and pouring concrete to ensure a strong connection, and installing a floor plate and connection slab.

The construction process of the continuous laamen bridge of this second embodiment is to install at least one more pier 600 with a rigid portion 610 formed between the partition girders 300 to create a two-main panel composite structure in the form of a continuous span. It constitutes a composite continuous Raamen Bridge.

The support installation step is the same as the support installation step in the first embodiment. If the difference between the ground height and the bridge plan height is small, the insulating pile 110 is installed, and in the case of fill ground where the difference between the ground and the bridge plan height is large, lightweight The wall 120 is installed and constructed.

The deadman pile installation step is a process of installing a plurality of deadman piles 200 to be spaced apart from the support portion 100 toward the outside of the starting and ending point of the bridge.

In addition, when constructing the support part 100 with the lightweight wall 120, the lightweight wall 120 and the deadman pile 200 are installed to be connected through the strut tie 220 while the embankment work is performed.

In the pier installation step, at least one pier is installed corresponding to the length of the bridge to construct a continuous span type Raamen bridge.

In the step of mounting the two-main panel composite structure, the branch portion 410 of the two-main panel composite structure 400 is installed so that it is mounted on the rigid portions 320 and 610, and the two-main panel composite structure 400 is rigid. It is placed on the pad 380 of the connection parts 320 and 610, and the anchor bolt 355 installed on the rigid parts 320 and 610 is inserted into the long hole and fastened with a nut to enable a roller hinge function. It will be held to achieve.

The step of rigidly combining the two-main panel composite structure and the partition girder involves connecting the branch portions 410 and the rigid portions 320 and 610 of the two-main panel composite structure 400 mounted on the rigid portions 320 and 610. This is a process of rigidly coupling the two-main panel composite structure 400 to the partition girder 300 and the pier 600.

In the step of backfilling the rear surface of the partition girder, the rear surface of the partition girder 300 is backfilled so that the strut 370 and the deadman pile 200 connected to the strut 370 are buried.

The temporary material installation step is a process of installing braces and formwork between the two-main panel composite structure 400.

While constructing the floor slab 700 by pouring concrete, the connection slab 500 is constructed to be continuous with the floor slab 700, and the deadman pile 200 is constructed to be rigidly coupled to the bottom of the connection slab 500. It's a process.

The process of constructing the connected slab 500 is completed by installing the primary connected slab 510 so as to be continuous with the floor plate 700, or by connecting the primary connected slab 510 and the Gerber hinge 530. Construction can be done by additionally installing a secondary connection slab 520 to connect through.

In this way, a vent system is formed through the combination of the support portion 100, the partition girder 300, the strut 370, and the connecting slab 500 at the beginning and end of the bridge, thereby completing the continuous and laamen structural system.

The present invention, constructed in this way, is installed simply and quickly so that both ends are mounted on the partition girder 300 in a pre-fabricated state of the two-panel composite structure 400, so that rapid construction is achieved, on-site construction is minimized, and equipment and equipment are installed. By reducing the use of formwork, construction becomes easier and the construction period can be shortened.

In addition, the superstructure (A), substructure (B), and connecting slab (500) are rigidly integrated to form a multi-continuous frame structure system, resulting in a high moment redistribution effect and high stability and ductility due to the high-order negative structure.

In addition, by forming and supporting a high-order negative structure and a vent foundation, the central part deflection and moment are reduced.

In addition, by rigidly connecting the two-panel composite structure 400, which constitutes the superstructure, to the partition girder 300, a laamen bridge with a multi-continuous frame structure is constructed, significantly reducing construction costs by reducing the use of supports and expansion joints. .

In addition, to minimize the girder height, the two-panel composite structure (400) will be constructed as a composite slab that combines steel structure, PSC, and RC principles.

The present invention is not limited to the specific preferred embodiments described above, and various modifications can be made by anyone skilled in the art without departing from the gist of the invention as claimed in the claims. Of course, such changes are within the scope of the claims.

(100): Support (110): Insulation pile
(120): Lightweight wall (121): Lightweight pile
(122): Lightweight Basic Edition (200): Deadman File
(210): Buoyancy prevention plate (220): Strut tie
(300): Bulkhead girder (310): Bulkhead girder body
(320): Strong connection part (321): Strong reinforcement part
(330): Steel pedestal (331): Combined plate
(332): Stud (340): Reinforced concrete pedestal
(350): Coupling part (351): Top plate
(351a): long hole (352): lower plate
(353): Rigid bolt (354): Nut
(355): Anchor bolt (360): Fixing member
(370): Strut (380): Pad
(381): Long hole (390): Bracket reinforcement plate
(400): Two-main panel composite structure (410): Branch portion
(411): Box-shaped body (411a): Steel exposed portion
(412): lower plate
(413): Abdominal plate (414): Upper plate
(415): Primary rigidity-enhancing concrete (415a): Secondary rigidity-enhancing concrete
(416): Horizontal reinforcement plate (417): Vertical reinforcement plate
(417a): Bracket reinforcement plate (418): Branch longitudinal beam
(418a): Upper plate (418b): Lower plate
(418c): Abdominal plate (418d): Steel exposed portion
(418e): Long hole (419): Primary casing concrete
(420): Central part (421): Central longitudinal beam
(422): Reinforcement material (430): Change part
(440): Shear connector (441): Side plate
(442): Top plate (443): Through hole
(450): Primary tension member (460): Secondary tension member
(500): Connection slab (510): Primary connection slab
(520): Secondary connection slab (530): Gerber hinge
(540): First hinge portion (541): Hinge plate
(542): Long Gong (543): Wings
(544): Stud (550): Second hinge portion
(551): Hinge plate (552): Long hole
(553): Wing (554): Stud
(560): Hinge pin (570): Hinge cap
(600): Pier (610): Rigid connection
(700): Bottom plate

Claims (17)

A pair of supports installed at the starting and ending points of the bridge;
A plurality of deadman piles installed to be spaced apart from the support portion toward the outside of the bridge;
A bulkhead girder that is integrated with the support and installed in the width direction of the bridge, has a plurality of rigid parts protruding from the top, and has struts connected to the deadman piles on the sides;
A two-main panel composite structure consisting of a branch part rigidly connected to the rigid part of the partition girder, a central part between the branch parts, and a change part connecting the cross section of the branch part and the cross section of the central part;
A connection slab is installed to be integrally connected to the two-main panel composite structure or a floor plate constructed on top of the two-main panel composite structure, and the lower part is configured to be rigidly connected to the deadman pile,
The partition girder includes a partition girder body installed to be supported on an upper part of the support part, a rigid part formed to protrude from an upper part of the partition girder body so that the two-main panel composite structure can be strengthened after simple support, and A rigid reinforcement part that forms a laamen structure by placing reinforcing bars in the space between the rigid part and the two-main panel composite structure and pouring concrete so that the entire upper part of the bulkhead girder body is integrated with the two-main panel composite structure, and the partition girder A two-panel composite continuous laamen bridge, characterized in that it includes a strut that protrudes from the side of the body and is coupled to the deadman pile. A pair of supports installed at the starting and ending points of the bridge;
A plurality of deadman piles installed to be spaced apart from the support portion toward the outside of the bridge;
A bulkhead girder that is integrated with the support and installed in the width direction of the bridge, has a plurality of rigid parts protruding from the top, and has struts connected to the deadman piles on the sides;
At least one pier is installed between the partition girders and has a plurality of rigid parts protruding from the upper part;
A two-main panel composite structure consisting of a branch part rigidly connected to a rigid part of the bulkhead girder or a pier, a central part between the branch parts, and a change part connecting the cross section of the branch part and the cross section of the central part;
A connection slab is installed to be integrally connected to the two-main panel composite structure or a floor plate constructed on top of the two-main panel composite structure, and the lower part is configured to be rigidly connected to the deadman pile,
The partition girder includes a partition girder body installed to be supported on an upper part of the support part, a rigid part formed to protrude from an upper part of the partition girder body so that the two-main panel composite structure can be strengthened after simple support, and A rigid reinforcement part that forms a laamen structure by placing reinforcing bars in the space between the rigid part and the two-main panel composite structure and pouring concrete so that the entire upper part of the bulkhead girder body is integrated with the two-main panel composite structure, and the partition girder A two-panel composite continuous laamen bridge comprising a strut that protrudes from the side of the body and is coupled to the deadman pile. The method of claim 1 or 2,
The two-main panel composite structure,
It consists of a box-shaped body with an open top and rigidly coupled to the rigid portion of the bulkhead girder or pier, and primary rigidity-enhancing concrete filled inside the box-shaped body, wherein a portion of the box-shaped body contains the primary rigidity-enhancing concrete. A plurality of point portions are formed with exposed steel parts that expose the box-shaped body without being cast and are mounted on the rigid portion and then rigidly coupled to the rigid portion;
A central portion formed between the branch portions and consisting of two central vertical beams and a crossbeam connecting the central vertical beams;
A two-panel composite type continuous laamen bridge, characterized in that it includes a change part configured to connect the cross section of the box-shaped body of the branch portion and the central longitudinal beam of the central portion and change the cross section. According to claim 3,
The box-shaped body,
a lower plate rigidly coupled to the rigid portion;
a pair of two-main abdominal plates facing each other from the lower plate and extending upward;
An upper plate installed at right angles to the abdominal plate at the top of the two-main abdominal plate;
A two-panel composite continuous laamen bridge, characterized in that it includes a shear connector installed on the upper part of the lower plate and the upper plate. According to claim 4,
The shear connector may be composed of a cap pub board, and the cap pub board is,
A pair of abdominal plates installed on the lower or upper plate of the box-shaped body at an angle facing each other and having a plurality of through holes, and an upper plate connecting the upper ends of the abdominal plates and having a plurality of through holes. A two-panel composite continuous Laamen bridge, characterized by its construction. The method of claim 1 or 2,
The two-main panel composite structure,
It is composed of two branch longitudinal beams that are adjacent to each other and have a shear connector installed at the top, and a primary casing concrete that is composited with the two branch longitudinal beams by connecting the two branch longitudinal beams, and is rigidly coupled to the rigid portion. A branch portion in which a steel exposed portion is formed at the lower part of the branch longitudinal beam so that the branch longitudinal beam is exposed without the primary casing concrete being poured;
A central portion formed between the branch portions and made of primary casing concrete synthesized by connecting two central longitudinal beams on which upper shear connectors are installed and the central longitudinal beams;
A two-panel composite type continuous laamen bridge, characterized in that it includes a change part configured to connect the cross-sections of the branch longitudinal beams of the branch parts and the central longitudinal beam of the central part and change the cross-section. According to claim 1,
The deadman pile is a two-panel composite continuous Laamen bridge, characterized in that it includes a buoyancy prevention plate attached to the tip of the deadman pile to control the buoyant reaction force. According to claim 6,
A two-panel composite continuous laamen bridge, characterized in that it is constructed by installing tension members so that prestress can be introduced into the two-panel composite structure and tensioning and anchoring the tension members. The method of claim 1 or 2,
A two-panel composite continuous laamen bridge, characterized in that the support portion is a plurality of insulating piles installed in the width direction of the bridge. The method of claim 1 or 2,
The support portion is a lightweight wall constructed in the width direction of the bridge, and the lightweight wall and deadman piles are configured to be connected through a plurality of strut ties. A two-panel composite continuous laamen bridge. delete The method of claim 1 or 2,
The rigid part,
A steel pedestal that is partially embedded in the partition girder and the remaining part is formed to protrude from the upper part of the partition girder to support the two-main panel composite structure to form a simple support and rigid laamen structure;
A coupling plate coupled to the upper part of the steel pedestal to rigidly couple it to the two-main panel composite structure 400;
In a state fastened to the coupling plate, a portion, like the steel pedestal, is installed to be embedded in the partition girder, and the remaining portion is exposed to the top so that the two-main panel composite structure is fitted and joined to form a simple support and rigid laamen structure. and a plurality of anchor bolts fastened through nuts and washers;
A plurality of rigid bolts that strongly couple the coupling plate and the two-panel composite structure to form a laamen structure and are fastened through nuts and washers; A two-panel composite continuous Laamen bridge, characterized in that it includes a. The method of claim 1 or 2,
The rigid part,
A reinforced concrete pedestal formed to protrude from the upper part of the partition girder to support the two-main panel composite structure;
A coupling part that is fitted to the outside of the reinforced concrete pedestal 340 and allows the two-main panel composite structure to have a simple support and rigid laamen structure;
A fixing member that secures the coupling portion from being separated from the reinforced concrete pedestal 340;
A plurality of anchor bolts, a portion of which is embedded in the bulkhead girder and the remaining portion exposed to the upper part of the joint, are fitted and joined to the two-main panel composite structure, and are fastened through nuts and washers to form a simple support and rigid lame structure;
A two-panel composite continuous laamen bridge characterized by comprising a plurality of rigid bolts that are fastened through nuts and washers to form a laamen structure by strongly coupling the coupling portion and the two-panel composite structure. The method of claim 1 or 2,
The connection slab is,
A primary connection slab that is cast simultaneously with the floor plate or the two-main panel composite structure and whose lower part is rigidly coupled to the upper part of the deadman pile;
A secondary connection slab installed to be continuous with the first connection slab;
A two-panel composite continuous laamen bridge, characterized in that it includes a plurality of Gerber hinges connecting the first and second connection slabs. According to claim 14,
The Gerber hinge,
A hinge plate having a long hole, a pair of wings formed to be round on both sides of the hinge plate and surrounding the hinge plate, and a stud configured to extend from the center of the hinge plate and be embedded in the secondary connection slab. A first hinge portion consisting of:
A hinge plate is installed to overlap the hinge plate of the first hinge portion and has a long hole communicating with the long hole, and is rounded on both sides of the hinge plate and is wrapped around the outside of the pair of wings of the first hinge portion. a second hinge portion consisting of a pair of wings formed and a stud configured to extend from the center of the hinge plate and configured to be embedded in the primary connection slab;
A two-panel composite continuous laamen bridge comprising a hinge pin installed to fit into a long hole formed in the hinge plate of the first hinge portion and the second hinge portion. A support installation step of installing supports at the starting and ending points of the bridge;
A deadman pile installation step of installing a plurality of deadman piles to be spaced apart from the support portion toward the outside of the bridge;
A bulkhead girder body, a plurality of rigid parts formed to protrude from the upper part of the partition girder body so that the two-main panel composite structure can be simply supported and then strengthened, and reinforcing bars in the space between the rigid parts and the two-main panel composite structure. A rigid reinforcement part that forms a laamen structure by placing the reinforcement and pouring concrete so that the entire upper part of the bulkhead girder body is integrated with the two-panel composite structure, and is formed to protrude from the side of the bulkhead girder body and is connected to the deadman pile. Installing a bulkhead girder made up of struts so that the bulkhead girder body is integrated with the support portion and connecting the deadman pile to the deadman pile using a strut;
A two-main panel composite structure consisting of a branch part fixed to the rigid part of the bulkhead girder, a central part between the branch parts, and a change part connecting the cross section of the branch part and the cross section of the central part, the branch part is mounted on the rigid part of the bulkhead girder. Step of installing the two-main panel composite structure as much as possible;
A two-panel composite structure simple beam mounting step of installing the two-panel composite structure so that it is mounted on the rigid portion of the partition girders on both sides;
A step of rigidly combining the two-main panel composite structure and the partition girder by strengthening the two-main panel composite structure mounted on the rigid part and the rigid part so that the two-main panel composite structure is rigidly coupled to the partition girders;
A backfilling step of backfilling the backside of the bulkhead girder;
A temporary material installation step of installing braces and formwork between the two-panel composite structure;
A floor plate and connection slab installation step of assembling rebar and pouring concrete so that a connection slab is continuous with the upper floor plate of the two-main panel composite structure and the floor plate, and a deadman pile is rigidly coupled to the bottom of the connection slab; A construction method for a two-panel composite continuous Laamen bridge, characterized in that it consists of: A support installation step of installing supports at the starting and ending points of the bridge;
A deadman pile installation step of installing a plurality of deadman piles to be spaced apart from the support portion toward the outside of the bridge;
A bulkhead girder body, a plurality of rigid parts formed to protrude from the upper part of the partition girder body so that the two-main panel composite structure can be simply supported and then strengthened, and reinforcing bars in the space between the rigid parts and the two-main panel composite structure. A rigid reinforcement part that forms a laamen structure by placing the reinforcement and pouring concrete so that the entire upper part of the bulkhead girder body is integrated with the two-panel composite structure, and is formed to protrude from the side of the bulkhead girder body and is connected to the deadman pile. Installing a bulkhead girder made up of struts so that the bulkhead girder body is integrated with the support portion and connecting the deadman pile to the deadman pile using a strut;
A pier installation step of installing one or more piers between the bulkhead girders, wherein a pier having a protruding rigid portion is formed on an upper part of the piers;
A two-main panel composite structure consisting of a branch part that is strengthened to the rigid part of the bulkhead girder or pier, a central part between the branch parts, and a change part connecting the cross section of the branch part and the cross section of the central part, the branch part of the bulkhead girder or pier A two-panel composite structure mounting step of installing to be mounted on a rigid joint;
A step of rigidly combining the two-main panel composite structure and the partition girder by strengthening the two-main panel composite structure mounted on the rigid part and the rigid part so that the two-main panel composite structure is rigidly coupled to the partition girder and the pier;
A backfilling step of backfilling the backside of the bulkhead girder;
A temporary material installation step of installing braces and formwork between the two-panel composite structure;
A floor plate on the upper part of the two-main panel composite structure and a connection slab continuous with the floor plate, and a floor plate and connection slab for assembling rebar and pouring concrete so that deadman piles are rigidly coupled to the bottom of the connection slab 500. A construction method of a two-panel composite continuous Laamen bridge, characterized in that it includes an installation step.