KR101725086B1 - Steel girder using through bridge girder segment for rapid bridge replacement - Google Patents

Steel girder using through bridge girder segment for rapid bridge replacement Download PDF

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Publication number
KR101725086B1
KR101725086B1 KR1020150161286A KR20150161286A KR101725086B1 KR 101725086 B1 KR101725086 B1 KR 101725086B1 KR 1020150161286 A KR1020150161286 A KR 1020150161286A KR 20150161286 A KR20150161286 A KR 20150161286A KR 101725086 B1 KR101725086 B1 KR 101725086B1
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South Korea
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girder
steel
bridge
beams
segment
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KR1020150161286A
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Korean (ko)
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조준상
길홍배
김병구
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한국도로공사
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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges

Abstract

To a girder for emergency bridge restoration using a hanging girder segment which can quickly assemble a hanging girder segment including both side beams and side beams to a desired span and quickly extrude the damaged portion to a damaged portion and install a laminating board. Wherein the hanging girder segments comprise longitudinally spaced apart side-by-side steel beams and steel side beams for interconnecting the inner lower portion of the side-by-side steel beams to each other, So that the upper surface of the slab, which is a slab provided on the upper side of the steel lateral beam, is positioned on the inner lower side of the both side steel beams.

Description

[0001] STEEL GIRDER USING THROUGH BRIDGE GIRDER SEGMENT FOR RAPID BRIDGE REPLACEMENT [0002]

The present invention relates to a girder for emergency bridge restoration using a hanging girder segment. More specifically, a girder bridge for emergency bridge restoration using a hanging girder segment which can quickly assemble a hanging girder segment including both side steel beams and beams to a required span, and extruding the same at the recovery span of the bridge, .

Recently, there has been an accident that the Bucheon high-rise bridge fire should be bypassed for 93 days on the outskirts of the Seoul outer ring road. As a result of this accident, social loss cost of about W216bn (direct repair costs, tolls,

As a result, we experienced social disruption when we cut off the highway network in the expressway bridge, and emergency relief bridges (within 3 days (72hrs) of hypothesis period and weekend use) were needed to overcome them.

On the other hand, the bridge type is introduced in the form of a bridge.

In other words, THROUGH BRIDGE is a bridge type in which the slab (road surface) is positioned below the longitudinal girder as a bridge type according to the position of the slab.

Recently, the bridges that have been applied in this way are the U-type bridge bridges (UCBs) used in light rail construction.

1A is a cross-sectional view of the PSC girder bridge 20 in comparison with the lower cross-sectional channel bridge 10 (UCB). The lower cross-sectional shape of the PSC girder bridge is advantageous for securing visibility while traveling, There is an advantage that construction work and construction cost can be reduced. (It can be seen that the shape of the lower bridge is very low, so it can be very big compared to the girder bridge which is a sagittal bridge.)

As a conventional construction method for such a channel bridge, a full-staging method is used for a U-shaped segment for a channel bridge. In such a case, a provisional system such as a bridge must be installed. It was often too large.

In particular, the preflex beam 40 is manufactured by forming a protruding portion 42 horizontally protruding from the bottom of each inner side of the lower flange concrete 41, The precast concrete slab 50 is placed on the slab 42,

The pre-cast concrete slab 50 and the pre-flex beam 40 are connected to each other by the projecting reinforcing bars 43 and 44, and a portion to which the projecting reinforcing bars 43 and 44 are connected is finished with concrete 45 And how to make a halos bridge.

Such a hanging bridge manufacturing is distinguished from the conventional method of manufacturing the pre-cast type U-shaped segment 10 connected to each other in the longitudinal direction. However, when the weight of the slab and the live load act on the protruding portion 42, .

In this case, a halo bridge as shown in FIG. 1C has been introduced. That is, the both side beams 60 are disposed in the lateral direction, and a plurality of the lateral slabs 70 having a predetermined transverse length are installed in the longitudinal direction.

In order to make the load of the transverse slab 70 bear the load of the both side beams 60, the side beams 60 are arranged so that both ends of the upper support 61 and the transverse slab 70 can be supported, 61 so as to form a support step 63. [0051] As shown in FIG.

Therefore, the conventional lower bridge method is unsuitable for bridge restoration because side beams and slabs must be separately connected to each other in the field, and the side beams made of reinforced concrete are used, which makes them unsuitable for rapid emergency work. do.

Therefore, while the girder and the slab can be urgently installed in the recovery section of the bridge (recovery span), the restoration girder and the slab are immediately assembled and forwardly extruded while the broken bridge section (recovery span) is demolished This paper presents a technical problem to solve the provision of an emergency bridge restoration girder using a hanging bridge girder segment for an emergency rescue bridge which can be installed.

In addition, since the girder for emergency bridge restoration using the hanging girder segment requires various lateral widths, it is a technical task to solve the problem of providing an emergency bridge restoration girder using a hanging girder segment for emergency recovery bridges, .

In addition, it is a technical problem to solve the problem of providing emergency bridge restoration method using a quicker bridge restoration girder by allowing the girder and the slab to be stably installed in the bridge substructure in the site in a more stable and simple manner in the recovery span.

In order to achieve the above object,

First, since the span length of highway bridges is different but most of them are less than 60M, the bridge girder segment is manufactured in advance and connected to each other by the necessary length to manufacture an emergency bridge restoration girder corresponding to the required span length. Such an emergency bridge restoration girder is performed simultaneously with the demolition work in the recovery section (recovery span) of the bridge.

At this time, the hanging girder segment is made to replace the slab with the laminating board, so that the steel lateral beam restricting the lateral steel beams to each other is integrated in advance.

The reason for using the steel beams in the production of the girder girder segment is that the weight is not large and the work is easy, and the laminates can be directly installed on the upper side of the steel lateral beam.

Second, the emergency girder restoration girder is subjected to the largest hypothetical load at the center portion over the entire extension length. Accordingly, since the present invention uses a pre-fabricated hanging girder segment, the hanging girder segment located at the central portion is made of an adjusted steel material thickness, so that it is easy to cope with the span of the restoring span.

Thirdly, since the hanging girder segment is manufactured in advance and its length is determined, it is impossible to connect the hanging girder segment to fit the span of the emergency bridge restoration girder when assembled and connected according to the required span. Therefore, the length adjusting socket girder is used separately.

That is, the length-adjusting socket girders are disposed between the downwardly-moving girder segments arranged to be spaced apart from each other for the purpose of length adjustment, and are connected to each other. At this time, the connection uses a channel member for connecting the adjacent abdomen and upper and lower flanges of the both side steel beams spaced apart from each other in the longitudinal direction. At this time, the steel horizontal beam can expand the upper flange to enlarge the supporting end face that can support the flat plate, so that the flat plate can be easily supported.

To this end,

A lateral steel beam spaced laterally apart from each other; And a steel transverse beam connecting the inner lower portion of the both side steel beams to each other using a connecting hole including a bolt and a nut, the lower girder segments being connected to each other in the longitudinal direction, So that both ends of the steel lateral beam are set between the inside of the lower end of the belly of the both side steel beams, and the height of both ends of the side beam is set to be between the ends The steel transverse beam and both side steel beams are integrated by the connector in a state in which the bottom edge of both ends of the steel transverse beam is placed on the upper flange surface of both side steel beams, The emergency bridge restoration girder (A) as a bridge restoration girder (A) comprises: (d-1) a support for a height adjustment beam installed at both bridge columns (B2, B1) The step of setting so that the horizontal steel beam and set so as to be supported, the support beam is supported in the jack side of the leveling beam is installed on the upper surface height is lower than the control beam position in the emergency repair bridge girder (A) for; (d-2) operating the supporting jacks of the height adjusting beams downward so that the emergency bridge restoring girders A support the both side steel beams by the supporting jacks of the supporting beams; (d-3) Adjusting the height of the beam After lowering the height of the beam, the support jack is installed on the upper surface, and the support jack of the support beam is operated downward. The emergency bridge restoration girder A is supported by the height- A girder for restoring an emergency bridge using a girder girder segment to be installed at a recovery span by a descending installation method including a step of supporting a steel horizontal beam by a jack.

In the present invention, it is possible to carry out the demolition work necessary for the construction of the restoration bridge during the construction of the emergency bridge restoration girder by connecting the hanging bridge girder segments according to the span of the restoration bridge, thereby enabling quick restoration of the bridge.

In addition, the hanging girder segment can be quickly replaced with a slab by using a steel beam without a large self-weight.

In addition, the emergency girder restoration girder can be used to construct an emergency bridge restoration girder with a desired length by using a length-adjustable socket girder, thus restoring the bridge according to the span.

FIG. 1A shows a comparison between a conventional lower bridge and a girder bridge
1B is a cross-sectional view of a conventional steel composite segment for downhole,
FIG. 1C is a perspective view of a conventional halos, which is manufactured by separating the two side beams and the lateral slab,
2 is a structural perspective view of a hanging girder segment of the present invention,
3A and 3B are a perspective view and a longitudinal sectional view of an emergency bridge restoration girder (A) connected with a hanging girder segment of the present invention,
FIG. 4 is a perspective view showing a connection of a length-adjusting socket girder located at the end of the emergency bridge restoring girder A of the present invention,
5 is a descent view of an emergency bridge restoration girder A according to the present invention,
FIGS. 6A, 6B and 6C are a descending installation flow chart of the emergency bridge restoration girder A according to the present invention, and FIG. 6D shows the support beam of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

[Girders for emergency bridge restoration using the hanging girder segment 100 (A)]

Fig. 2 shows a perspective view of the construction of the hanging girder segment 100 of the present invention.

The haulage girder segment 100 comprises two side steel beams 110 and steel side beams 120 as shown in FIG.

As shown in FIG. 3A, such a hanging girder segment 100 is manufactured as an emergency bridge restoring girder A by connecting the plurality of hanging girder segments 100 in the longitudinal direction. The characteristic feature of this embodiment is that the hanging girder segment 100 having a predetermined length is manufactured (A) is assembled and connected by connecting the emergency bridge repair girder (A) as long as necessary.

For example, if a 10M emergency bridge restoration girder A is required, the lower bridge girder segments 100, such as 1M, 2M, 3M, etc., may be directly connected to each other using a connecting plate such as an overpass plate, bolts and nuts, So that they can be manufactured by connecting them.

As shown in FIG. 2A, both side girder beams 110 constituting the hanging girder segment 100 are I-shaped cross sections composed of an upper flange 111, a stomach portion 112 and a lower flange 113 as steel plates It can be seen that it is formed of a steel beam.

As shown in FIG. 2, the steel transverse beams 120 are formed between the transversely spaced side-by-side steel beams 110 to be integrated with each other.

On the upper surface of the steel horizontal beam 120, a flat plate 200 having a slab function is mounted on the steel plate 200 as shown in FIG.

In this case, since the upper surface of the flat plate 200, which is a slab installed on the upper surface of the steel transverse beam 120, is located at the lower inner side of the both side steel beams, the lower girder segment 100 manufactured by the lowering method is used .

It can be seen that the steel transverse beam 120 is also formed as an I-shaped cross-section composed of an upper flange 121, an abdomen 122 and a lower flange 123 as a steel plate, 200 have a cross-sectional area that can be supported.

At this time, the steel transverse beam 120 is set between the lower ends of the lower portion of the abdomen portion 112 of the both side steel beams 110, and when the ends are connected by using a connecting means such as a bolt and a nut, So that the both end bottoms are supported on the inner side of the lower flange of the both side steel beams 110. As a result,

The load transmitted from the flat plate 200 is transmitted to both ends of the steel transverse beam 120 and the load can be transmitted stably by the both side steel beams 110 installed at both ends of the steel transverse beam 120, The cross section can be optimized.

The present invention thus includes a hanging girder segment 100 comprising a transverse spaced-apart side-by-side steel beam 110 and a steel lateral beam 120 for connecting the inner lower portion of the both-side steel beam to each other So that the upper surface of the flat plate 200, which is a slab provided on the upper side of the steel lateral beam, is positioned at the lower inner side of the both side steel beams.

At this time, it can be seen that both end portions of the steel lateral beam 120 have a sectional height larger than the center sectional height, and a reinforcement material (not shown) such as a stiffener is used according to the extension length of the steel lateral beam 120 So that the cross section can be reinforced.

In order to secure the slab-mounted flat plate 200, it is preferable to provide a support block (see FIG. 6) on the upper side of both end sides of the steel horizontal beam 120 so that the position of the flat plate 200 can be constrained In addition,

These steel transverse beams 120 are each mounted on both ends of the side-by-side steel beams 110, but are spaced apart from one another in the longitudinal direction according to the extension length of the side-by-side steel beams 110.

[Connection of the hauling girder segment 100]

3A and 3B are a perspective view and a longitudinal sectional view of an emergency bridge restoration girder A in which a plurality of hanging girder segments 100 are connected to each other in the longitudinal direction.

Therefore, the total number of the hanging girder segments 100 is determined according to the extension length L of the emergency bridge restoring girder A,

3A, three hanging girder segments 100 and one hanging girder segment 100 at both ends are connected to each other.

Each of these hanging girder segments 100 can be connected with different thicknesses of steel of the upper flange, the abdomen and the lower flange as shown in FIG. 3B.

That is, when the longitudinal extension length of the emergency bridge repair girder A becomes long, the greatest bending moment occurs at the center portion, which can be related to the safety problem in the hypothesis. Therefore, The hanging girder segment 100 located at the center of the bridge can cope with the span of the bridge by a method of thickening the steel material,

Of course, the lower girder segment 100 having different thicknesses of the lower flange, the abdomen, and the upper flange may be used.

3B shows that the thickness of the lower flange is greater than the thickness t1 > t2 and the central portion is thicker than the lower flange.

[Method of adjusting the extension length of the emergency bridge restoring girder (A)] [

4 shows an extension length adjusting method using a length adjusting socket girder 300 located at the end of the emergency bridge restoring girder A. [

That is, since the length of the hanging girder segment 100 is determined, it may be difficult to precisely match the final desired extended length when the length of the emergency bridge restoring girder A is adjusted to the extended length.

According to the present invention, the hanging girder segment 100 is set in accordance with the extension length of the emergency bridge restoration girder A in accordance with the final extension length L, and the emergency bridge restoration girders A adjacent to each other is connected to the socket girder (300).

At this time, since the adjacent both side steel beams 110 are spaced apart from each other, the abdomen of both side steel beams and the upper and lower flanges are connected to each other in the longitudinal direction by using the socket girder 300 composed of the channel member.

That is, a U-shaped channel member 310 disposed in contact with the upper flange bottom face adjacent to the longitudinal direction and the upper face of the abdomen and the lower flange is padded with a U-shaped channel member 310 and two side steel beams 110 are connected to each other.

Since the U-shaped channel member 310 is installed symmetrically, the insertion connecting plate 320, which is a connecting plate of the U-shaped channel member 310, is inserted between the adjacent U-shaped channel members 310 and is fastened So that they are bound in the transverse direction.

The vertical transverse beams 120 are also spaced apart from each other in the longitudinal direction so that the upper flange 121 of the horizontal transverse beam of the steel further extends the longitudinal width and the reinforcing plate 124 is installed between the bottom and the abdomen It can be seen that there is no problem in supporting the flat plate 200.

At this time, the vertical plate 200 on which the length-adjusting socket girder 300 is installed and the steel lateral beam 120 are vertically adjacent to each other, The fixing of the flat plate 200 is complemented by using the bolt 126 welded and fixed to the steel horizontal beam upper flange 121.

[Lowering installation of emergency bridge restoration girder (A)]

Fig. 5 is a descending installation view of an emergency bridge restoration girder A according to the present invention, Figs. 6A, 6B and 6C are descending installation flow charts of an emergency bridge restoration girder A according to the present invention, Fig. Fig. 3 is a view showing the supporting beam of the invention.

That is, when extrusion of the emergency bridge restoring girder A is completed at the recovery span using the extrusion nose A1 (not shown), an emergency bridge restoring girder A is provided between the front bridge bridge B2 and the bridge bridge B1 This lowering seat is referred to as the lowering installation of the emergency bridge restoring girder A in the present invention.

As shown in FIG. 5, the emergency bridge restoration girder A is assembled first on the bridge slab upper surface B around the restoration span, as shown in FIG. 5, and the girder A including the moving roller and the rail (Upper surfaces of the bridge bridges B1 and B2) of the existing bridge substructure in a state in which the emergency bridge restoring girder A is extruded while connecting the counter waiter and the additional falloff girder segment forward by using the moving device 400, And the final laminating plate 200 is installed on the support beam 630 installed on the support plate 630. [

6A to 6C show a descending installation method of the emergency bridge restoring girder A in order.

6A, it can be seen that the emergency bridge restoration girder A finally extruded at the recovery span is set by the support jack 620 of the height adjustment beam 610 installed at both piers B2 and B1 And that the support beam 630 provided on the upper surface of the support jack 620 is set at a lower position than the height adjustment beam 610 in the outer side of the height adjustment beam 610.

It can be seen that the support jack 620 of the height adjustment beam 610 supports the bottom of the steel lateral beam 120 and the emergency bridge restoration girder A finally extruded at the recovery span is being set. It can also be seen that the bottom surface of both side steel beams 110 is indicated by reference height h.

6A, the height of the support beams 620 of the support beams 630 is higher than the height of the height adjustment beams 610. The height adjustment beams 610 are formed by stacking up and down steel beams, And is positioned below the both side steel beams 110.

Next, when the support jack 620 of the height adjustment beam 610 is operated downward, the finally extruded emergency bridge restoration girder A is guided by the support jack 620 of the support beam 630 to the both side steel beams 110 are supported is changed.

6B, the first stage of the height adjustment beams 610 of the three stages is removed, and the support jacks 620 are installed on the upper surface of the height adjustment beams 610 of the second stage, And the final extruded emergency bridge restoring girder A is supported by the supporting jack 620 of the height adjustment beam 610 of the second height so that the steel horizontal beam 120 is supported by the supporting jack 620 It can be seen that it is changed again.

6C, the support jack 620 of the support beam 630 is removed, and the support jack 620 is lowered on the upper surface of the height adjustment beam 610 of the second step, The bottom surface of the steel beam 110 on both sides of the emergency bridge restoration girder A is touched to complete the final descent installation. Thus, it can be seen that the support jack 620 of the height adjustment beam 610 of the two-step height is finally removed.

6D, the support beams 630 are formed to have a rigidity enough to support the self weight of the emergency bridge restoring girder A. Preferably, the support beam 630 has an I Shaped steel material 631 is used, and the reinforcing plate 632 is formed to have a cross section favorable to the resistance of vertical load.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

100: Hanging girder segment
110: Both side steel beams 120: Steel side beams
124: reinforcing plate 125: filler
126: fixing bolt 200:
300: Socket girder for length adjustment 310: U-shaped channel member
320: Insertion connection plate
400: girder moving device 610: height adjusting beam
620: Support Jack 630: Support beam
A: Girders for emergency bridge restoration B1, B2: Pier

Claims (6)

A lateral steel beam 110 disposed laterally spaced apart from each other; And a steel lateral beam 120 connecting the inner lower portion of the both side steel beams to each other using a connecting hole including a bolt and a nut. ,
The upper surface of the flat plate 200, which is a slab installed on the upper surface of the steel lateral beam 120, is positioned at an inner lower portion of both side steel beams,
Both ends of the steel transverse beam 120 are set between the inside of the lower end of the abdomen portion 112 of both side steel beams 110 with both end section height being formed to have a larger cross sectional height than the middle portion between the opposite ends, An emergency bridge restoration girder A (A) for allowing the steel lateral beam 120 and the both side steel beams 110 to be integrated by the connector in a state in which the both ends of the lateral beams are placed on the upper flange of the both side steel beams )as
The emergency bridge restoration girder A is provided with a support jack 620 of a height adjustment beam 610 provided at both bridge angles B2 and B1 of the recovery span of the emergency bridge restoration girder A The support beam 630 provided on the upper side of the height adjustment beam 610 is set at a position lower than the height adjustment beam 610 so that the support beam 620 is supported on the side of the height adjustment beam 610, ; the emergency bridge restoring girder A is operated by the support jack 620 of the support beam 630 to move the both side steel beams 630 and 630 by the support jack 620 of the height adjustment beam 610, 110) is supported; (d-3) The support jack 620 of the support beam 630 is operated downward after the support jack 620 is installed on the upper surface while reducing the height of the height adjustment beam 610, (120) being supported by a support jack (620) of a height-adjustable beam (610) of reduced height (A) on a lower girder segment Girder for emergency bridge restoration using. The method according to claim 1,
The two-sided steel beam 110 is a girder for emergency bridge restoration using a hanging girder segment using a steel beam having different steel thicknesses t over the entire length of extension of the emergency bridge restoration girder A. The method according to claim 1,
The hanging girder segment 100 is manufactured by connecting the hanging girder segments 100 having the extended lengths to each other so that the length adjusting socket girder 300 is aligned with the entire extension length of the emergency bridge restoring girder A to the lower hanging girder segment 100 are connected to each other,
The length-adjusting socket girder 300 is disposed between spaced apart lower girder segments 100 such that the length-adjusting socket girder 300 and the lower girder segment 100 are spaced apart from each other by an upper flange bottom surface, The girder for emergency bridge restoration is constructed by using a lower girder segment to be connected to each other through fastening members using a U-shaped channel member. The method of claim 3,
The vertical plate 200 on which the length-adjusting socket girder 300 is installed and the steel lateral beam 120 are vertically adjacent to each other by using the filler 125 to fill the space between the vertical plate 200 and the steel horizontal beam 120, An emergency bridge restoration girder using a fall-down girder segment for fixing a lumber plate (200) by using a bolt (126) welded and fixed to a beam upper flange (121). delete The method according to claim 1,
In the step (d-1), the receiving beam 630 is made of a steel material 631 having an I-shaped cross section having the same cross-sectional size as the both side steel beams 110, An emergency bridge restoration girder using a hanging girder segment using an advantageous cross section.
KR1020150161286A 2015-11-17 2015-11-17 Steel girder using through bridge girder segment for rapid bridge replacement KR101725086B1 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108162144A (en) * 2017-12-26 2018-06-15 湖南五新模板有限公司 A kind of segment beam bottom board system
CN109338886A (en) * 2018-10-11 2019-02-15 中铁大桥勘测设计院集团有限公司 A kind of contraposition coalignment and its contraposition matching process for steel box girder segment
CN111636285A (en) * 2020-07-17 2020-09-08 石家庄铁道大学 Low-height groove-shaped steel-concrete composite beam
KR102316851B1 (en) 2021-04-07 2021-10-25 주식회사 한국교량개발연구소 composite girder of lower Route Bridge with reinforcement structure to increase bending resistance

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8104130B2 (en) * 2007-09-27 2012-01-31 Marc Lerner Bridge structure

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8104130B2 (en) * 2007-09-27 2012-01-31 Marc Lerner Bridge structure

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108162144A (en) * 2017-12-26 2018-06-15 湖南五新模板有限公司 A kind of segment beam bottom board system
CN109338886A (en) * 2018-10-11 2019-02-15 中铁大桥勘测设计院集团有限公司 A kind of contraposition coalignment and its contraposition matching process for steel box girder segment
CN109338886B (en) * 2018-10-11 2023-09-29 中铁大桥勘测设计院集团有限公司 Alignment matching device and alignment matching method for steel box girder segments
CN111636285A (en) * 2020-07-17 2020-09-08 石家庄铁道大学 Low-height groove-shaped steel-concrete composite beam
KR102316851B1 (en) 2021-04-07 2021-10-25 주식회사 한국교량개발연구소 composite girder of lower Route Bridge with reinforcement structure to increase bending resistance

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