CN203583343U - Support type frame bridge - Google Patents
Support type frame bridge Download PDFInfo
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- CN203583343U CN203583343U CN201320604672.4U CN201320604672U CN203583343U CN 203583343 U CN203583343 U CN 203583343U CN 201320604672 U CN201320604672 U CN 201320604672U CN 203583343 U CN203583343 U CN 203583343U
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Abstract
The utility model discloses a support type frame bridge, comprising a frame body, wherein the midspan of the frame body comprises a top plate of which the upper surface is paved with a railroad bed and a bottom plate of which the upper surface is paved with highway roadbed. The frame bridge further comprises a top-layer steel plate, which is arranged on the lower surface of the top plate under the railway bed and extends along the longitudinal direction; a bottom-layer steel plate, which is arranged on the upper surface of the bottom plate and the middle of the highway roadbed and extends along the longitudinal direction; a longitudinal beam, which is positioned below the center of the railway bed along the transverse direction, and fixed on the lower surface of the top-layer steel plate; a plurality of support frames arranged along the longitudinal direction for supporting the longitudinal beam. The support type frame bridge can effectively modify the stress of the frame bridge, and plays a role in reinforcing the frame bridge, and thus the service life of the frame bridge is prolonged. Meanwhile, the support type frame bridge is small in investment, high in benefit, simple to construct and reliable and safe in reinforcing effect; when in construction, the railway bed at the upper part of the frame bridge is not needed to be uncovered, so that influence of the construction process on railway and highway traffic is small.
Description
Technical field
The utility model relates to bridge engineering field, is specifically related to a kind of brace type frame structure bridge.
Background technology
Frame structure bridge is railway and the highway cross-over bridge of wearing under a kind of highway, and its agent structure is box frame.The major advantage of this structure is that knot forms integral body, and rigidity is large, and base stress is little, is applicable to the poor place of ground, and can prevent preferably the infiltration of the surface water and underground water.
For effectively controlling the sedimentation and deformation of railway bed in railway frame structure bridge, need to reinforce the frame construction of frame structure bridge.The existing reinforcement means for bridge is a lot, is mainly divided into direct reinforcing method and indirect reinforcing method two classes.Directly reinforcing method claims again strengthening member method, be the direct reinforcing for structural element or ultimate bearing capacity of joints raising, mainly contain Enlargement of Section, displacement coagulation local method, outsourcing shaped steel method, outer steel bonding plate method, outer sticky fibrous composite method, wrapping wire method and wire rope net sheet-Polymer Mortar surface layer reinforcing method etc.Reinforcing method is reasonability or the integrality for structural system indirectly, by newly-increased partial component or facility, comes change structure total arrangement and force path, reaches the object that reduces structural internal force, increases the rigidity of structure and ductility.Reinforcing method mainly contains newly-increased shear wall and lateral support method, sets up damper method, setting support method, sets up drawknot connection method and prestressing etc. indirectly.
If above-mentioned existing bridge reinforcing method is used in frame structure bridge, has following technical problem:
(1) body of a bridge major part of railway frame structure bridge is imbedded among stratum, and bridge floor is covered by railway bed again, and the external surface of pontic is all buried by Rock And Soil or roadbed, adopts traditional pontic reinforcement means, need to open railway bed, causes railway to be stopped transport;
(2) Railway Frame Bridge multidigit is in the urban area of heavy traffic, and traditional reinforcement means is larger on existing railway and highway communication impact.
As from the foregoing, be necessary to provide a kind of sedimentation and deformation that can effectively control railway bed in railway frame structure bridge, and construction time need not open the railway bed on frame structure bridge top, after reinforcing, not affect the current brace type frame structure bridge of Kuang Gouqiao highway.
Utility model content
The purpose of this utility model has been to provide a kind of sedimentation and deformation that can effectively control railway bed in railway frame structure bridge, and construction time need not open the railway bed on frame structure bridge top, does not affect the current brace type frame structure bridge of Kuang Gouqiao highway after reinforcing.
According to embodiment of the present utility model, a kind of brace type frame structure bridge is provided, comprise chassis body, during described chassis body comprises across with in across the end bay of both sides, in described, across comprising top board and base plate, the upper surface of described top board is equipped with railway bed, and the upper surface of described base plate is equipped with highway subgrade, it is characterized in that, described frame structure bridge also comprises:
Top layer steel plate, is arranged at the soffit of described railway bed below top board and extends along the longitudinal direction;
Bottom steel plate, is arranged at the centre of described plate upper surface, described highway subgrade, and extends along the longitudinal direction;
Longeron, is positioned at described railway bed along the below at the center of horizontal direction and is fixed on the soffit of described top layer steel plate;
Some bracing frames of arranging along the longitudinal direction, are arranged between described longeron soffit and described bottom upper surface of steel plate, for supporting described longeron.
Preferably, each bracing frame comprises:
A plurality of columns that form a line along the longitudinal direction; And
The bent connecting rod that adjacent upright posts is connected respectively.
Wherein, brace type frame structure bridge comprises at least one following characteristics:
Described vertical depth of beam is 300～800 millimeters, and width is 200～300 millimeters;
The transverse width of described column is 200～300 millimeters, and longitudinal length is 300～800 millimeters;
Spacing between described column is 300～600 millimeters;
Described connecting rod is that diameter is the round steel of 20～50 millimeters.
Preferably, the spacing between described column is identical.
Described column is work shaped steel.
As another preferred version, described each bracing frame comprises:
Three columns that are triangularly arranged, and
The bent connecting rod that adjacent upright posts is connected respectively.
Preferably, support frame as described above transverse width is 200～300 millimeters, and longitudinal length is 300～800 millimeters.
Described connecting rod is that diameter is the round steel of 20～50 millimeters.
Described column is work shaped steel.
Preferably, brace type frame structure bridge comprises at least one following characteristics:
The thickness of described top layer steel plate is 5～30 millimeters, and width is 4～8 meters;
The thickness of described bottom steel plate is 5～30 millimeters, and width is 2～4 meters;
Distance between adjacent supports frame is 800～1500 millimeters.
As shown from the above technical solution, the brace type frame structure bridge in the utility model has the following advantages:
(1) at the middle part of frame bridge, increase by the support of being disbursed from the cost and expenses, the span of frame bridge is reduced to half, in frame structure bridge across moment of flexure under the power effect of the top of bracing frame, reduce rapidly, effectively improve the stressed of frame structure bridge, play the effect of reinforcing frame structure bridge, extend the application life of frame structure bridge.
(2) the utility model investment is little, high efficiency, and construction is simple, and consolidation effect is reliable and secure.
(3) the utility model need not be opened the railway bed on frame structure bridge top, and work progress is all less on the impact of railway and highway communication.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described.Apparently, the accompanying drawing in below describing is only embodiment more of the present utility model, for those of ordinary skills, can also obtain according to these accompanying drawing illustrated embodiments other embodiment and accompanying drawing thereof.
Fig. 1 shows the cross-sectional figure of brace type frame structure bridge in embodiment 1;
Fig. 2 shows the sectional side elevation of brace type frame structure bridge in embodiment 1;
Fig. 3 shows the structural representation of bracing frame in embodiment 1.
The specific embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, referring to accompanying drawing and enumerate preferred embodiment, the utility model is further described.Yet, it should be noted that, many details of listing in manual are only used to make reader to have a thorough understanding to one or more aspects of the present utility model, even if do not have these specific details also can realize these aspects of the present utility model.
Inventor of the present utility model considers, in frame bridge across middle part increase by one steel and support, in frame bridge across span reduce half, in across the top power effect supported at steel of the moment of flexure of zone line under reduce rapidly, thereby effectively improve the stress system of frame bridge, play the effect that reinforcing frame is built bridge.
Below by specific embodiment, structure and the operating principle of brace type frame structure bridge in the utility model are described in detail.
Embodiment 1:
Fig. 1 shows the cross-sectional figure of brace type frame structure bridge in the present embodiment;
Fig. 2 shows the sectional side elevation of brace type frame structure bridge in the present embodiment.
As depicted in figs. 1 and 2, brace type frame structure bridge comprises chassis body 1, during chassis body 1 comprises across 10 and in across the end bay 20 of both sides.Wherein,
In comprise top board 101 and base plate 102 across 10, the upper surface of top board 101 is equipped with railway bed, the upper surface of base plate 102 is equipped with highway subgrade 103.In the utility model, the residing direction of definition frame structure bridge width is that laterally the residing direction of frame structure bridge length is longitudinal.
Below railway bed, the soffit of top board is provided with the top layer steel plate 30 extending along the longitudinal direction.Preferably, the thickness of the top layer steel plate 30 in the present embodiment is 5～30 millimeters, and width is 4～8 meters.
At the upper surface of base plate 102, the centre of highway subgrade is provided with along the longitudinal direction the bottom steel plate 40 extending.Preferably, the thickness of the bottom steel plate 40 in the present embodiment is 5～30 millimeters, and width is 2～4 meters.
At railway bed below the center of horizontal direction, the soffit of top layer steel plate 30 is fixed with longeron 50.Preferably, in the present embodiment, the height of longeron 50 is 300～800 millimeters, and width is 200～300 millimeters.As preferred version, the optional recruitment shaped steel of longeron 50.
Between longeron 50 soffits and bottom steel plate 40 upper surfaces, be also provided with some bracing frames 60 of arranging along the longitudinal direction, for support stringer 50.In the present embodiment, the distance between adjacent supports frame 60 is 800～1500 millimeters.Preferably, the distance between adjacent supports frame 60 equates.
Fig. 3 shows the structural representation of bracing frame 60 in the present embodiment.As shown in Figure 3, bracing frame 60 comprises:
A plurality of columns 601 that form a line along the longitudinal direction and the bent connecting rod 602 that adjacent upright posts is connected respectively.Preferably, each bracing frame 60 in the present embodiment comprises three columns 601.Three columns 601 are along the longitudinal direction " one " font and arrange.
As the preferred version in each embodiment, the transverse width of each column 601 is between 200～300 millimeters, and longitudinal length is between 300～800 millimeters; Spacing between adjacent upright posts is between 300～600 millimeters.
It is the round steel of 20～50 millimeters that connecting rod 602 is selected diameter.Certainly, it is exemplary that connecting rod 602 is selected round steel, and every can be fixed on column 601 and the structure that adjacent upright posts is fixed connection is all fallen into be originally the protection domain of utility model.
In the present embodiment, because bracing frame 60 is positioned at railway bed along the below at the center of horizontal direction, so bracing frame 60 is the main bearing structure of whole frame structure bridge reinforcement system.In order to reduce the impact on traffic, bracing frame 60 width in the horizontal can not be too wide, otherwise will take the width of road driveway, and its width can not be too little simultaneously, otherwise easily under the effect of frame bridge top board 101 loads, transverse bending occurs.In addition, bracing frame 60 also must meet rigidity requirement on frame bridge is longitudinal, prevents buckling.
For guaranteeing that bracing frame 60 all has good rigidity on horizontal, the vertical both direction of frame bridge, prevent horizontal and vertical bending, adopt following scheme:
1) bracing frame transverse design
According to Euler's formula, the critical load of member generation elastic buckling is:
In formula 1, the modulus of elasticity that E is material that member is used; l
0calculated length for member;
I is the moment of inertia of member section to main shaft.Wherein,
In formula 2, the center that y is section A is to the distance of main shaft.
L
0=ul (formula 3)
In formula 3, u is member calculated length coefficient, and l is member length.
Known in formula 1, when the critical load of member generation elastic buckling is maximum, because member length l is certain, so member calculated length coefficient u value minimum, hence one can see that, and the upper and lower side of bracing frame should adopt and be rigidly connected.
As the preferred version in each embodiment, make bracing frame 60 obtain good lateral stiffness simultaneously, in the present embodiment, select work shaped steel as the column 601 of bracing frame 60.For making full use of the lateral rigidity of work shaped steel, work section steel flange is perpendicular to the cross section of frame bridge.
2) bracing frame longitudinal design
For making bracing frame there is good longitudinal rigidity, in the present embodiment, preferably in the vertical by the setting of 3 work shaped steel " " word, and by bent connecting rod 602, adjacent work shaped steel is welded to web and the edge of a wing welding of bent connecting rod 602 and work shaped steel.
Below the construction method of top layer steel plate 30, bottom steel plate 40 and bracing frame 60 in frame structure bridge is described in detail.Mainly comprise:
Step 1: the cast concrete base to top board 101 soffits, base plate 102 upper surfaces is processed.
The projection of top board 101 soffits and base plate 102 upper surfaces (the section difference of concrete component handing-over position, template etc.) is polished flat.Section difference after finishing is smooth-going.The position of corner angle, external corner adopts sanding machine to wear into fillet, and inner corner trim adopts cement mortar to carry out chamfering, and angular radius must not be less than 30 millimeters.Clean the component surface of polishing, and make it fully dry.
Step 2: top layer steel plate 30 is installed.
Top layer steel plate 30 thickness and paste width according to frame bridge bridge floor load determination.Top layer steel plate 30 adopts pressure injecting glue to cohere, and fixing by crab-bolt 31.
Step 3: installing bottom layer steel plate 40.
Step 4: bracing frame is installed.
Bracing frame 60 can first be processed as standard component before installing, and transports in frame bridge and install after machining.Bracing frame lower end and 40 welding of bottom steel plate.Bracing frame frame bridge longitudinally installing space according to frame bridge top board 101 load determinations.
Step 5: longeron 50 is installed.
Embodiment 2:
The structural similarity of the brace type frame structure bridge in the present embodiment and the brace type frame structure bridge in embodiment 1, its difference is that the structure of bracing frame is different.
In the present embodiment, each bracing frame comprises three columns 601 that are triangularly arranged, and the bent connecting rod 602 that adjacent upright posts is connected respectively.Wherein,
The transverse width of each bracing frame is 200～300 millimeters, and longitudinal length is 300～800 millimeters.
Preferably, the column in the present embodiment 601 also adopts work shaped steel.
In the present embodiment, each bracing frame is triangular in shape is exemplary, and bracing frame also can be quadrangle or other polygons, and triangle support frame is preferred embodiment, is not intended to limit the structure of bracing frame.
Because other structures of the present embodiment center structure bridge are identical with the structure of embodiment 1 center structure bridge, repeat no more herein.
From above technical scheme, the brace type frame structure bridge in the utility model has the following advantages:
(1) at the middle part of frame bridge, increase by the support of being disbursed from the cost and expenses, the span of frame bridge is reduced to half, and the moment of flexure across 10 in frame structure bridge reduces rapidly under the power effect of the top of bracing frame, effectively improves the stressed of frame structure bridge, play the effect of reinforcing frame structure bridge, extend the application life of frame structure bridge.
(2) the utility model investment is little, high efficiency, and construction is simple, and consolidation effect is reliable and secure.
(3) the utility model need not be opened the railway bed on frame structure bridge top, and work progress is all less on the impact of railway and highway communication.
The foregoing is only preferred embodiment of the present utility model, not for limiting protection domain of the present utility model.All within spirit of the present utility model and principle, any modification of doing, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (10)
1. a brace type frame structure bridge, comprise chassis body, during described chassis body comprises across with in across the end bay of both sides, in described across comprising top board and base plate, the upper surface of described top board is equipped with railway bed, the upper surface of described base plate is equipped with highway subgrade, it is characterized in that, described frame structure bridge also comprises:
Top layer steel plate, is arranged at the soffit of described railway bed below top board and extends along the longitudinal direction;
Bottom steel plate, is arranged at the centre of described plate upper surface, described highway subgrade, and extends along the longitudinal direction;
Longeron, is positioned at described railway bed along the below at the center of horizontal direction and is fixed on the soffit of described top layer steel plate;
Some bracing frames of arranging along the longitudinal direction, are arranged between described longeron soffit and described bottom upper surface of steel plate, for supporting described longeron.
2. brace type frame structure bridge according to claim 1, is characterized in that, each bracing frame comprises:
A plurality of columns that form a line along the longitudinal direction; And
The bent connecting rod that adjacent upright posts is connected respectively.
3. brace type frame structure bridge according to claim 2, is characterized in that, comprises at least one following characteristics:
Described vertical depth of beam is 300～800 millimeters, and width is 200～300 millimeters;
The transverse width of described column is 200～300 millimeters, and longitudinal length is 300～800 millimeters;
Spacing between described column is 300～600 millimeters;
Described connecting rod is that diameter is the round steel of 20～50 millimeters.
4. brace type frame structure bridge according to claim 3, is characterized in that, the spacing between described column is identical.
5. according to arbitrary described brace type frame structure bridge in claim 2 to 4, it is characterized in that, described column is work shaped steel.
6. brace type frame structure bridge according to claim 1, is characterized in that, described each bracing frame comprises:
Three columns that are triangularly arranged, and
The bent connecting rod that adjacent upright posts is connected respectively.
7. brace type frame structure bridge according to claim 6, is characterized in that, support frame as described above transverse width is 200～300 millimeters, and longitudinal length is 300～800 millimeters.
8. brace type frame structure bridge according to claim 6, is characterized in that, described connecting rod is that diameter is the round steel of 20～50 millimeters.
9. according to the arbitrary described brace type frame structure bridge of claim 6 to 8, it is characterized in that, described column is work shaped steel.
10. according to arbitrary described brace type frame structure bridge in claim 1 to 4 or 6 to 8, it is characterized in that, comprise at least one following characteristics:
The thickness of described top layer steel plate is 5～30 millimeters, and width is 4～8 meters;
The thickness of described bottom steel plate is 5～30 millimeters, and width is 2～4 meters;
Distance between adjacent supports frame is 800～1500 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320604672.4U CN203583343U (en) | 2013-09-27 | 2013-09-27 | Support type frame bridge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320604672.4U CN203583343U (en) | 2013-09-27 | 2013-09-27 | Support type frame bridge |
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| CN203583343U true CN203583343U (en) | 2014-05-07 |
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| CN201320604672.4U Expired - Lifetime CN203583343U (en) | 2013-09-27 | 2013-09-27 | Support type frame bridge |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107326807A (en) * | 2017-07-13 | 2017-11-07 | 浙江永联建设工程股份有限公司 | A kind of construction technology of frame core-tube system |
| CN110453559A (en) * | 2019-08-14 | 2019-11-15 | 郑州暖树实业有限公司 | Roads plate, assembled road and its construction method |
-
2013
- 2013-09-27 CN CN201320604672.4U patent/CN203583343U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107326807A (en) * | 2017-07-13 | 2017-11-07 | 浙江永联建设工程股份有限公司 | A kind of construction technology of frame core-tube system |
| CN107326807B (en) * | 2017-07-13 | 2019-02-05 | 浙江永联建设工程股份有限公司 | A kind of construction technology of frame core-tube system |
| CN110453559A (en) * | 2019-08-14 | 2019-11-15 | 郑州暖树实业有限公司 | Roads plate, assembled road and its construction method |
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| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
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Granted publication date: 20140507 |