CN203346802U - New bridge and original bridge transverse reinforcing steel frame for hollow slab bridge widening - Google Patents
New bridge and original bridge transverse reinforcing steel frame for hollow slab bridge widening Download PDFInfo
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- CN203346802U CN203346802U CN 201320260236 CN201320260236U CN203346802U CN 203346802 U CN203346802 U CN 203346802U CN 201320260236 CN201320260236 CN 201320260236 CN 201320260236 U CN201320260236 U CN 201320260236U CN 203346802 U CN203346802 U CN 203346802U
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Abstract
A new bridge and original bridge transverse reinforcing steel frame for hollow slab bridge widening comprises longitudinally arranged hollow slab bridges. The hollow slab bridges include original bridge hollow slabs and new bridge hollow slabs, and the new bridge hollow slabs are located on one side or two sides of the original bridge hollow slabs. Hinge joints are reserved between the hollow slabs and include transversely arranged transverse connecting devices, wherein the transverse connecting devices comprise transverse connecting elements and vertical connecting elements, the transverse connecting elements are connected to the bottom and the top, the vertical connecting elements are connected with the bottom transverse connecting elements and the top transverse connecting elements, the transverse connecting elements are reinforcing steel components, the bottom reinforcing steel components of the hollow slabs are profile steel or steel plates, the top reinforcing steel components of the hollow slabs are steel plates, holes are formed in the hinge joints in a drilling mode, the hinge joints are provided with the vertical connecting elements, and the transversely arranged transverse connecting devices are sequentially distributed in the longitudinal direction. The new bridge and original bridge transverse reinforcing steel frame is especially suitable for widening of simply supported hollow slab bridges, and can solve the difficult technical problems that a single slab is damaged and a vehicle cannot run stably due to the fact that stress of the new bridge hollow slabs and the original bridge hollow slabs is not coordinated.
Description
Technical field
The utility model relates to the bridge field, especially relates to the framework that a kind of hollow slab bridge is widened transformation.
Background technology
Along with rapid development of economy, the traffic volume of the main speedway of China is growing, and reconstruction and extension project has become a focus of expressway construction, and wherein the assembling Supported Slab Bridge becomes the emphasis of bridge reorganization and expansion.Bridge is widened transformation can be designed to the form that new and old bridge separates, but superstructure connects, substructure does not connect, is the main flow form of new and old hollow slab bridge splicing during China's speedway is remodeled and expand.The common employing of the new and old bridge upper lateral method of attachment cast-in-place wet seam between connected, new and old plate of only mating formation connects, replaces old bridge side plate connection etc.But effect is all undesirable, new and old junction longitudinal joint and the old bridge side plate adjacent with the new bridge side plate occur that veneer is happened occasionally by force phenomenon.
Laterally connect flimsy reason mainly between new and old plate connecting portion in hollow slab bridge: in existing design specifications, larger variation has all occurred in the requirement of related design standard and Load value, change has also occurred in the hollowcore slab section form thereupon, the little ribbet spectacle plate that past often adopts is replaced by large ribbet single orifice plate, new panel stiffness is larger than old plate increasing degree, and old plate is under arms in process, because the effects such as shrinkage and creep of vehicular load and environmental activity and concrete self also can cause old panel stiffness to decline to a great extent, thereby there is larger difference in new and old panel stiffness, the load cross direction profiles is undergone mutation at new and old handing-over position, cause new and old handing-over seam to bear larger shearing, can cause between new and old plate and have relative displacement when serious, and then cause that new and old plate seaming position forms the bridge floor longitudinal joint, the diseases such as old bridge side plate veneer is stressed.Thereby, widen when transformation at hollow slab bridge, seek the horizontal connection that a kind of not only economy but also the reliable method of easily going strengthen between new and old bridge and extremely be necessary.
The utility model content
The purpose of this utility model is that the new and old bridge that provides a kind of hollow slab bridge to widen transformation laterally strengthens the steel framework body, improves construction quality and durability that hollow slab bridge is widened transformation.
The technical solution of the utility model is:
The new and old bridge that a kind of hollow slab bridge is widened transformation laterally strengthens the connection framework, comprises the hollow slab bridge of vertical layout, and hollow slab bridge comprises old bridge hollowcore slab and new bridge hollowcore slab, and the new bridge hollowcore slab is positioned at the one or both sides of old bridge hollowcore slab; Be provided with the hinge seam between each hollowcore slab, the cross-connecting apparatus that comprises horizontally set, cross-connecting apparatus comprises the horizontal connecting elements that is connected to bottom and top, the vertical connector that is connected the horizontal connecting elements at bottom and top, laterally connecting elements is for strengthening the steel member, the bottom of hollowcore slab strengthens the steel member and adopts shaped steel or steel plate, the top of hollowcore slab strengthens the steel member and adopts steel plate, be drilled with hole and be provided with vertical connector at described hinge seam place, horizontal cross-connecting apparatus is longitudinally arranged successively; Cross-connecting apparatus is connected to bottom and the top of described old bridge hollowcore slab and new bridge hollowcore slab in turn;
One, determine according to the rigidity of hollowcore slab the road number that cross-connecting apparatus is vertically arranged, in two kinds of situation;
span L need arrange 5 road cross-connecting apparatus at 16m and following hollow slab bridge thereof, 0.2 ~ the 0.3L that is centered close to hollow slab bridge, 0.45 ~ 0.65 L, 0.7 ~ 0.8 L place in 3 roads wherein, 2 Dao centers in the outer part and distance L 1=0.5 ~ 1.5m place at hollowcore slab two ends;
the hollow slab bridge of span L more than 16m need arrange 7 road cross-connecting apparatus, and at the distance two ends, L1=0.5 ~ 1.5m place respectively arranges cross-connecting apparatus one, is evenly arranged 5 road cross-connecting apparatus in all the other positions, and spacing is (L-L1)/6 ± 0.05 L;
Two, determine according to span L the hollowcore slab quantity that cross-connecting apparatus laterally connects:
The new bridge hollowcore slab number laterally connected is 1 ~ 3, when new bridge hollowcore slab number is less than when the plate that needs connection is counted, gets actual plate number connection;
Described top steel plate is bonded in the top of hollowcore slab.
The enhancing steel member of described bottom is provided with bonding plane, and described bonding plane is bonded in the hollowcore slab bottom.
Steel plate and bottom that vertical connector plate connects top strengthen the steel member.
Be filled with inserts in the hole of vertical connector.
Described inserts is epoxy mortar.
The shaped steel of described hollowcore slab bottom or steel plate and air contact surface are provided with antirust coat, and in the hinge seam, the vertical connector outside is provided with epoxy coating.
The L/4 that is centered close to hollow slab bridge, L/2, the 3L/4 place in centre 3 roads of span L in 5 road cross-connecting apparatus of 16m and following hollow slab bridge setting thereof, the distance L 1=1m place at all the other 2 Dao centers and hollowcore slab two ends.
When the span of bridge, when 20m is above, the new bridge hollowcore slab number laterally connected is 1.
Described vertical connector is screw rod, and the two ends band screw of screw rod also is connected with nut.
The utility model is simple in structure, workable, be convenient to quality control, improved construction quality and durability that hollow slab bridge is widened transformation.
Compared with prior art, the utility model has the advantages that:
1, the new and old bridge that the hollow slab bridge provided according to the utility model is widened transformation laterally strengthens the connection framework, to arrange and strengthen lateral ties steel framework body at new and old bridge handing-over position, the hollowcore slab local stiffness of new and old bridge is connected, the lateral ties of new and old bridge and the globality of full-bridge have been strengthened, make new and old bridge collaborative work bear vehicular load, the vehicular load cross direction profiles is seamlessly transitted.
2, the utility model is specially adapted to the transformation of widening of freely-supported hollow slab bridge, can solve new and old bridge hollowcore slab and destroy and the unstable technical barrier of driving a vehicle because of the stressed inharmonious veneer caused.
The accompanying drawing explanation
The structural representation that Fig. 1 is the utility model embodiment mono-, be applicable to the hollow slab bridge that span is 16m;
The A-A sectional view that Fig. 2 is Fig. 1;
The structural representation that Fig. 3 is the utility model embodiment bis-, be applicable to the hollow slab bridge that span is greater than 20m;
The B-B sectional view that Fig. 4 is Fig. 3.
The specific embodiment
As shown in Figure 1, the utility model adopts is that the new and old bridge that hollow slab bridge is widened transformation laterally strengthens the connection framework, and hollow slab bridge is longitudinally arranged, comprises old bridge hollowcore slab 1 and new bridge hollowcore slab 2, and new bridge hollowcore slab 2 is positioned at the left side of old bridge hollowcore slab 1; Be equipped with hinge seam 3 between each hollowcore slab.
The bottom of each hollowcore slab and top connect by horizontal connecting elements, laterally connecting elements is for strengthening the steel member, and the enhancing steel member of bottom is shaped steel or steel plate, and the enhancing steel member at top is steel plate, hinge seam place is vertically connected by screw rod 6, and the two ends band screw of screw rod 6 adds nut;
embodiment mono-:
The present embodiment is applicable to the hollow slab bridge that span is not more than 16m and widens improvement project, and as shown in Figure 1, 2, hollow slab bridge comprises old bridge and 6 new bridges that new bridge hollowcore slab 2 forms that 12 old bridge hollowcore slabs 1 form.The numbering of hollowcore slab as shown in Figure 1, 2, new bridge hollowcore slab 2 be numbered S1 ~ S6, old bridge hollowcore slab 1 be numbered S7 ~ S18, adopt to (that is: 1 new bridge hollowcore slab 2 with 8 old bridge hollowcore slabs 1) plate top between S14 at S6 that steel plate 4 is connected, adopt channel-section steel 5 to connect at the bottom of plate, by the bolt 6 that passes through hinge seam 3 between plate, the steel plate 4 on plate top and 5 edges of the channel-section steel at the bottom of plate laterally are connected.
Vertically arrange altogether 5 road cross-connecting apparatus 7 along spanning, wherein 0.2 ~ 0.3L of the central hollow slab bridge of 3 road cross-connecting apparatus 7,0.45 ~ 0.65 L, 0.7 ~ 0.8 L (optimum value is respectively: L/4, L/2,3L/4) locate, the distance L at all the other 2 Dao centers and hollowcore slab two ends
1=0.5 ~ 1.5m place (optimum value is for laying respectively at apart from 1m place, hollowcore slab two ends), and between corresponding to every two hollowcore slabs 2, the prepared screw-bolt hole hole, position of hinge seam.
Laterally connecting elements is screw rod 6 by vertical connector, by a block number, be that S6 new bridge hollowcore slab 2 and the old bridge hollowcore slab 1 of numbering S7, S8, S9, S10, S11, S12, S13, S14 are clipped together, form an integral body, vertical connector 3 adopts screw rod 6, and the two ends band screw of screw rod 6 also is connected with nut.
During Specific construction, comprise the following steps:
(1) determine type, specification, quantity, the length of transverse connection
Stitch maximum value and " Code for design of steel structures " in shearing according to hollowcore slab S6 to the hinge of S13, the thickness of the type of selection hollowcore slab die bed steel and specification, hollowcore slab top steel plate 4;
(2) determine type, specification, the quantity of vertical connector
Laterally the vertical connector between connecting elements and hollowcore slab is bolt 6, maximum value in the old bridge hinge seam shearing that the specification of vertical connector is connected by horizontal connecting elements with quantity and new bridge hinge seam shearing is according to " Code for design of steel structures " calculative determination, after the specification of bolt 6 and quantity are determined, according to " Code for design of steel structures ", (GB50017-2003) determine top steel plate 4 length and width;
(3) laterally connecting elements and 3 constructions of vertical connector
Delimitation Deck Consolidation zone, cut the plate top and mat formation, and setting-out is holed at hinge seam 3 after determining the reinforcing position; The epoxy mortar levelling removing surface at hollowcore slab top/bottom part reinforcing position is clean, be greater than hollowcore slab with strength grade, brush bonding primer and adhesive glue; Bonding top steel plate 4; The bonding plane of bottom shaped steel or steel plate (the present embodiment is channel-section steel 5) is smeared adhesive glue, uses the Chain block hoisted in position; Connecting screw rod 6 in the hinge seam is installed, plate top/bottom part steel member is connected with bolt.The epoxy mortar that is greater than hollowcore slab with strength grade is filled the screw rod hole; The recovery connecting reinforcement of mating formation, cast concrete the asphalt layer of mating formation of mating formation.
embodiment bis-:
The present embodiment is applicable to the hollow slab bridge that span is greater than 20m and widens improvement project,
As shown in Figure 3, Figure 4, hollow slab bridge comprises old bridge and 6 new bridges that new bridge hollowcore slab 2 forms that 12 old bridge hollowcore slabs 1 form.The numbering of hollowcore slab as shown in Figure 1, 2, new bridge hollowcore slab 2 be numbered S1 ~ S6, old bridge hollowcore slab 1 be numbered S7 ~ S18, adopt to (that is: 1 new bridge hollowcore slab 2 with 6 old bridge hollowcore slabs 1) plate top between S12 at S6 that steel plate 4 is connected, adopt channel-section steel 5 to connect at the bottom of plate, by the bolt 6 that passes through hinge seam 3 between plate, the steel plate 4 on plate top and 5 edges of the channel-section steel at the bottom of plate laterally are connected.
Vertically arrange altogether 7 road cross-connecting apparatus 7 along spanning, at 1m place, distance two ends, respectively arrange cross-connecting apparatus 7 one, be evenly arranged 5 road cross-connecting apparatus 7 in all the other positions, spacing be (
l-2)/6, and between corresponding to every two hollowcore slabs 2, the prepared screw-bolt hole hole, position of hinge seam.
This example Specific construction step is identical with the construction sequence in example one.
To sum up, the utility model arranges the enhancing horizontal along hollow slab bridge in the hollowcore slab bottom in new and old bridge handing-over zone, position with top and is connected the steel member, with the vertical screw rod be arranged in the hinge seam, forms framework, and new and old bridge hollowcore slab rigid connecting is integral; Determine horizontal vertical layout of connecting elements and the quantity of be connected hollowcore slab of strengthening according to hollowcore slab rigidity; Determine hollowcore slab bottom and the horizontal connection steel member at top and the model of vertical connecting screw rod according to hinge seam shearing.Connect framework by this steel framework body and strengthened the lateral ties of new and old bridge and the globality of full-bridge, strengthened the transverse load distribution capability between new and old bridge, the vehicular load cross direction profiles is seamlessly transitted, can solve new and old bridge hollowcore slab and destroy and the unstable technical barrier of driving a vehicle because of the stressed inharmonious veneer caused.
Claims (10)
1. the new and old bridge that a hollow slab bridge is widened transformation laterally strengthens the steel framework body, comprises the hollow slab bridge of vertical layout, and hollow slab bridge comprises old bridge hollowcore slab and new bridge hollowcore slab, and the new bridge hollowcore slab is positioned at the one or both sides of old bridge hollowcore slab; Be provided with the hinge seam between each hollowcore slab, it is characterized in that: the cross-connecting apparatus that comprises horizontally set, cross-connecting apparatus comprises the horizontal connecting elements that is connected to bottom and top, the vertical connector that is connected the horizontal connecting elements at bottom and top, laterally connecting elements is for strengthening the steel member, the bottom of hollowcore slab strengthens the steel member and adopts shaped steel or steel plate, the top of hollowcore slab strengthens the steel member and adopts steel plate, be drilled with hole and be provided with vertical connector at described hinge seam place, horizontal cross-connecting apparatus is longitudinally arranged successively; Cross-connecting apparatus is connected to bottom and the top of described old bridge hollowcore slab and new bridge hollowcore slab in turn;
One, determine according to the rigidity of hollowcore slab the road number that cross-connecting apparatus is vertically arranged, in two kinds of situation;
Two, determine according to span L the hollowcore slab quantity that cross-connecting apparatus laterally connects:
The new bridge hollowcore slab number laterally connected is 1 ~ 3, when new bridge hollowcore slab number is less than when the plate that needs connection is counted, gets actual plate number connection;
2. the new and old bridge that hollow slab bridge as claimed in claim 1 is widened transformation laterally strengthens the steel framework body, and it is characterized in that: described top steel plate is bonded in the top of hollowcore slab.
3. the new and old bridge that hollow slab bridge as claimed in claim 1 is widened transformation laterally strengthens the steel framework body, and it is characterized in that: the enhancing steel member of described bottom is provided with bonding plane, and described bonding plane is bonded in the hollowcore slab bottom.
4. the new and old bridge that hollow slab bridge as claimed in claim 1 is widened transformation laterally strengthens the steel framework body, it is characterized in that: steel plate and bottom that vertical connector plate connects top strengthen the steel member.
5. the new and old bridge that hollow slab bridge as claimed in claim 1 is widened transformation laterally strengthens the steel framework body, it is characterized in that: in the hole of vertical connector, be filled with inserts.
6. the new and old bridge that hollow slab bridge as claimed in claim 5 is widened transformation laterally strengthens the steel framework body, and it is characterized in that: described inserts is epoxy mortar.
7. the new and old bridge that hollow slab bridge as claimed in claim 1 or 2 is widened transformation laterally strengthens the steel framework body, it is characterized in that: shaped steel or the steel plate of described hollowcore slab bottom are provided with antirust coat with the air contact surface, in the hinge seam, outside vertical connector, are provided with epoxy coating.
8. the new and old bridge that hollow slab bridge as claimed in claim 1 or 2 is widened transformation laterally strengthens the steel framework body, it is characterized in that: the L/4 that is centered close to hollow slab bridge, L/2, the 3L/4 place in centre 3 roads of span L in 5 road cross-connecting apparatus of 16m and following hollow slab bridge setting thereof, the distance L at all the other 2 Dao centers and hollowcore slab two ends
1=1m place.
9. the new and old bridge that hollow slab bridge as claimed in claim 1 or 2 is widened transformation laterally strengthens the steel framework body, it is characterized in that: when the span of bridge, when 20m is above, the new bridge hollowcore slab number laterally connected is 1.
10. the new and old bridge that hollow slab bridge as claimed in claim 1 or 2 is widened transformation laterally strengthens the steel framework body, and it is characterized in that: described vertical connector is screw rod, and the two ends band screw of screw rod also is connected with nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320260236 CN203346802U (en) | 2013-05-14 | 2013-05-14 | New bridge and original bridge transverse reinforcing steel frame for hollow slab bridge widening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320260236 CN203346802U (en) | 2013-05-14 | 2013-05-14 | New bridge and original bridge transverse reinforcing steel frame for hollow slab bridge widening |
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| Publication Number | Publication Date |
|---|---|
| CN203346802U true CN203346802U (en) | 2013-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320260236 Expired - Fee Related CN203346802U (en) | 2013-05-14 | 2013-05-14 | New bridge and original bridge transverse reinforcing steel frame for hollow slab bridge widening |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103243661A (en) * | 2013-05-14 | 2013-08-14 | 华北水利水电学院 | New-old bridge transverse reinforced steel frame for broadening modification of hollow slab bridge and construction process |
-
2013
- 2013-05-14 CN CN 201320260236 patent/CN203346802U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103243661A (en) * | 2013-05-14 | 2013-08-14 | 华北水利水电学院 | New-old bridge transverse reinforced steel frame for broadening modification of hollow slab bridge and construction process |
| CN103243661B (en) * | 2013-05-14 | 2016-04-06 | 华北水利水电大学 | The new and old bridge that hollow slab bridge widens transformation laterally strengthens steel framework body and construction technology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131218 Termination date: 20160514 |
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| CF01 | Termination of patent right due to non-payment of annual fee |