CN211815556U - Structural system for longitudinal splicing of bridge - Google Patents
Structural system for longitudinal splicing of bridge Download PDFInfo
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- CN211815556U CN211815556U CN201922140062.3U CN201922140062U CN211815556U CN 211815556 U CN211815556 U CN 211815556U CN 201922140062 U CN201922140062 U CN 201922140062U CN 211815556 U CN211815556 U CN 211815556U
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Abstract
The utility model relates to a structure system for vertical piece of bridge, including the horizontal piece between main bridge and the main bridge, vertical piece between main bridge and the ramp bridge, vertical piece both sides between main bridge and the ramp bridge set up vertical shaped steel expansion joint and deformed steel expansion joint, make main bridge and ramp bridge break off completely, vertical shaped steel expansion joint is arranged along vertical piece in succession to the horizontal shaped steel expansion joint place position disconnection that extends to horizontal piece department, this disconnection position adopts the deformed steel expansion joint. The utility model discloses set up novel vertical shaped steel expansion joint and deformed steel expansion joint in the vertical piece both sides of bridge, make the bridge structure system break off completely, solve new and old bridge rationally and subside the harmful effects that the difference brought the superstructure, effectively alleviate heavy traffic effect and splice the cracked formation and development of joint department bituminous paving fatigue under the effect, be favorable to highway's normal current.
Description
Technical Field
The utility model relates to a structure of bridge piece, especially a vertical piece structural system of bridge piece.
Background
With the rapid development of economy, road construction has not been able to meet the ever-increasing traffic demands. In order to relieve traffic pressure, the phenomena of widening and reforming highway bridges and additionally arranging ramps on viaduct beams are common.
In the south access section of the S32 highway, TST elastic expansion joints are adopted as the original longitudinal joint splicing structures of bridges of two major roads, under the action of heavy traffic, the strength of overhanging positions of side plate beams is insufficient, the settlement of new and old bridges and the shrinkage and creep of concrete are different, the defects such as pits of asphalt surface layers at the splicing joints are frequently caused, and maintenance methods such as crack pouring, excavation and reparation are adopted, so that the treatment effect is poor.
At present, the longitudinal joints of the bridge at home and abroad mainly have three structures, including pier connection, beam slab connection and non-connection. The pier connection mode has great influence on the old bridge, the engineering cost is high, and the pier connection mode is rarely applied; the bonding characteristics of new and old concrete are improved through boundary constraint and surface effective treatment methods in beam slab connection, so that the plastic resistance is improved simultaneously, the development of bridge crack extensibility is delayed, and adverse effects can be brought to an upper structure under the action of factors such as uneven settlement of a bridge; therefore, the application of the non-connected structure is the widest, and the existing bridge longitudinal splicing seams of the S32 Shenjia lake highway adopt the non-connected structure.
When the two side beam bodies of the longitudinal joint are not connected with each other and exist as two independent structures, steel plates are usually paved on the concrete pavement top surfaces of an old bridge and a new bridge, TST elastic materials are paved, although adverse effects on the upper structure of the old bridge and the new bridge caused by differential settlement can be avoided, under the action of heavy-load traffic, the stress amplitude of the overhanging part is large, fatigue cracking is easy to occur on an asphalt surface layer, a pool is further formed, and driving safety is affected.
Therefore, the non-connected structure is improved, the longitudinal profile steel expansion joint structure and the deformed steel expansion joint are arranged on two sides of the longitudinal abutted seam of the new bridge and the old bridge, the cantilever wing plates of the side plates are subjected to bar planting reinforcement, the width of concrete of the edge belt is widened, the bridges on two sides are completely disconnected, the stress strain amplitude of the side plates under the action of heavy traffic is reduced, the development trend of fatigue cracking diseases is relieved, and the safe operation of a highway is facilitated.
Disclosure of Invention
In order to solve the problems of temporary solution, permanent solution, frequent occurrence of diseases, multiple repair times and the like in the prior art, the structural system for the longitudinal joint of the bridge is provided, the structural system adopts a novel longitudinal section steel expansion joint and deformed steel expansion joint structural system, the complete disconnection of a new bridge and an old bridge is ensured, and the adverse effect of settlement difference on an upper structure is avoided; and meanwhile, the edge plate overhanging wing plate is subjected to bar planting reinforcement, so that the stress strain amplitude of the edge plate under the action of heavy traffic is greatly reduced, and the development trend of fatigue cracking diseases of the asphalt pavement is relieved.
In order to realize the purpose, the technical scheme of the utility model is that: a structural system for longitudinal splicing of a bridge comprises a transverse splicing seam between a main bridge and a longitudinal splicing seam between the main bridge and a ramp bridge, wherein longitudinal section steel expansion joints and deformed steel expansion joints are arranged on two sides of the longitudinal splicing seam between the main bridge and the ramp bridge, so that the main bridge and the ramp bridge are completely disconnected, the longitudinal section steel expansion joints are continuously arranged along the longitudinal splicing seam and extend to the position of the transverse section steel expansion joint at the transverse splicing seam, and the disconnected position adopts the deformed steel expansion joint.
Further, the longitudinal profile steel expansion joint adopts 80 type E profile steel as the expansion joint connecting piece, and two 80 type E profile steels are respectively arranged on the longitudinal splicing side of the main bridge and the ramp bridge, and a sealing rubber strip is arranged between the two 80 type E profile steels.
Furthermore, in the longitudinal profile steel expansion joint, phi 12@100mm L-shaped steel bars are implanted into the side plate web plate, and phi 12@100mm door-shaped steel bars are implanted into the side plate wing plate.
Further, the width of the concrete at the edge belt of the longitudinal profile steel expansion joint is more than or equal to 500 mm.
Further, the installation clearance C of the longitudinal profile steel expansion joint is set to be 10-33 mm according to the installation temperature.
Furthermore, the special-shaped steel expansion joints are made of L-shaped steel prefabricated in factories, corners of the L-shaped steel are passivated and welded and fixed with the longitudinal and transverse section steel
Owing to adopted above technique, the utility model discloses following beneficial effect has:
1. the asphalt pavement diseases at the splicing seams are greatly reduced, and the normal traffic of the expressway is facilitated;
2. the repair frequency is greatly reduced, and the economical efficiency is better in the long run.
3. The structure atress is simple and clear, effectively avoids the difference to subside the influence to superstructure.
Drawings
FIG. 1 is a plan view of longitudinal profile steel expansion joint layout;
FIG. 2 is a sectional view of a longitudinal profile steel expansion joint structure;
FIG. 3 is a top view of a longitudinal profile steel expansion joint structure;
FIG. 4 is a structural view of an deformed steel expansion joint;
FIG. 5 is a large outline drawing of the processing of deformed steel;
FIG. 6 is a cross sectional view of the expansion joint of the original transverse section steel.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings and examples.
As shown in fig. 1 to 5, a structural system for longitudinal joints of bridges comprises transverse joints between a main bridge 10 and the main bridge 10, longitudinal joints between the main bridge 10 and a ramp bridge 11, and longitudinal profile steel expansion joints 13 and profile steel expansion joints 14 are arranged on two sides of the longitudinal joints between the main bridge 10 and the ramp bridge 11, so that the main bridge 10 and the ramp bridge 11 are completely disconnected, the longitudinal profile steel expansion joints 13 are continuously arranged along the longitudinal joints, and the positions of the transverse profile steel expansion joints 12 extending to the transverse joints are disconnected, and the disconnected positions adopt the profile steel expansion joints 14.
As shown in fig. 2 and 3, the longitudinal profile steel expansion joint 12 adopts 80-type E-shaped steel 5 as an expansion joint connecting member, two 80-type E-shaped steel 5 are respectively arranged on the longitudinal joint side of the main bridge and the ramp bridge, and a sealing rubber strip 6 is arranged between the two 80-type E-shaped steel 5. In the longitudinal profile steel expansion joint, a phi 12@100mm L-shaped steel bar 3 is implanted into a side plate web plate 1, and a phi 12@100mm door-shaped steel bar 2 is implanted into a side plate wing plate. The concrete width D of the edge belt of the longitudinal profile steel expansion joint is more than or equal to 500 mm. The installation clearance C of the longitudinal profile steel expansion joint is set to be 10-33 mm according to the installation temperature.
As shown in figures 4 and 5, L-shaped steel 8 prefabricated in factories is adopted in the deformed steel expansion joint, the corners of the L-shaped steel 8 are passivated 9 and welded and fixed with the longitudinal and transverse sections
Longitudinal section steel expansion joint maintenance material quantity meter
To S32 highway south admission section comprehensive renovation engineering example, the utility model discloses the transformation scheme that the adoption is shown in the attached drawing 1, wherein the detailed structure drawing in longitudinal shaped steel expansion joint, deformed steel expansion joint is shown in 2 ~ 5 of the attached drawing of accompanying drawing.
1) Longitudinal profile steel expansion joint installation
(1) Scribing and cutting, and removing the bridge deck pavement within the range of 50cm from the plate edge.
(2) Drilling holes and planting ribs, wherein phi 12@ 200L-shaped ribs 3 are implanted into the side plate web plate 1, and phi 12@200 door-shaped ribs 2 are implanted into the side plate wing plate. The depth of steel planting is more than or equal to 150 mm.
(3) The structural steel and the anchoring steel bars are in place, the structural steel adopts 80-type specification, the structural steel adopts Q345-grade steel, the weight of each section of the single structural steel per linear meter is not less than 16kg, the mounting clearance C is set according to the mounting temperature, and the error is not more than 1 mm.
(4) And 5 pieces of connecting steel bars with the diameter of 16mm are used for installing the connecting steel bars 4.
(5) The door-shaped steel bar 2 is welded with the anchoring steel bar by adopting single-side welding, and the lap joint length is more than 160 mm; the L-shaped steel bar 3 is welded with the door-shaped steel bar 2 by adopting single-side welding, and the lap joint length is more than 130 mm.
(6) And a foam board and a fiber board are embedded in the expansion joint.
(7) Pouring concrete, and adopting C50 steel fiber impervious concrete 7, wherein the steel fiber content is 50kg/m3, and the impervious grade is P8 grade.
(8) The strength of the concrete reaches more than 50 percent, and a water-stop rubber belt is installed after the seam is cleaned.
2) Installation of deformed steel expansion joint
(1) And (4) positioning and cutting, and removing the transverse profile steel expansion joint with the length of 1m and paving the expansion joint (see figure 6).
(2) The original implanted steel bars are reserved, and the replanting is carried out according to the requirements of design drawings when the quantity is insufficient.
(3) The section steel and the anchoring steel bar are in place, the section steel is L-shaped deformed steel, and is in flexible joint with the existing transverse section steel expansion joint and the longitudinal section steel, so that the machining precision of the L-shaped deformed steel is ensured, and the error is not more than 1 mm.
(4) And (3) installing connecting steel bars, wherein 4 pieces of 16 pieces are adopted in a transverse anchoring area, and 5 pieces of 16 pieces are adopted in a longitudinal anchoring area.
(5) The door-shaped steel bars and the anchoring steel bars are welded and connected by adopting single-side welding, and the lap joint length is more than 160 mm; the L-shaped steel bars are welded with the door-shaped steel bars by adopting single-side welding, and the lap joint length is more than 130 mm; and the cross position of the longitudinal and transverse connection steel bars adopts submerged arc spot welding.
(6) And welding the deformed steel and the longitudinal and transverse 80-shaped steel.
(7) And a foam board and a fiber board are embedded in the expansion joint.
(8) Pouring concrete, wherein C50 steel fiber impervious concrete is adopted, the steel fiber mixing amount is 50kg/m3, and the impervious grade is P8 grade.
(9) The concrete strength reaches more than 50%, a water-stop rubber belt is installed after the seam is cleared, and the new rubber water-stop belt is in hot-melt lap joint with the existing water-stop belt.
Note: the data parameters according to the scheme are suitable for the south access field section of the S32 highway, and other bridges are required to determine the processing size of the reinforcing steel bars and reasonably arrange the reinforcing steel bars according to the actual engineering conditions.
Claims (6)
1. The utility model provides a structural system for vertical piece of bridge, includes the horizontal piece between main bridge and the main bridge, the vertical piece between main bridge and the ramp bridge, its characterized in that: longitudinal profile steel expansion joints and deformed steel expansion joints are arranged on two sides of a longitudinal joint between the main bridge and the ramp bridge, so that the main bridge and the ramp bridge are completely disconnected, the longitudinal profile steel expansion joints are continuously arranged along the longitudinal joint and extend to the positions of transverse profile steel expansion joints at the transverse joint for disconnection, and the disconnected positions adopt the deformed steel expansion joints.
2. The structural system for longitudinal bridge joint according to claim 1, characterized in that: the longitudinal profile steel expansion joint adopts 80 type E profile steel as an expansion joint connecting piece, two 80 type E profile steels are respectively arranged on the longitudinal abutted seam sides of the main bridge and the ramp bridge, and a sealing rubber strip is arranged between the two 80 type E profile steels.
3. The structural system for longitudinal bridge joint according to claim 2, characterized in that: in the longitudinal profile steel expansion joint, phi 12@100mm L-shaped steel bars are implanted into a side plate web plate, and phi 12@100mm door-shaped steel bars are implanted into a side plate wing plate.
4. The structural system for longitudinal bridge joint according to claim 1, characterized in that: the concrete width of the edge belt of the longitudinal profile steel expansion joint is more than or equal to 500 mm.
5. The structural system for longitudinal bridge joint according to claim 1, characterized in that: and the installation clearance C of the longitudinal profile steel expansion joint is set to be 10-33 mm according to the installation temperature.
6. The structural system for longitudinal bridge joint according to claim 1, characterized in that: the special-shaped steel expansion joints are made of L-shaped steel prefabricated in factories, corners of the L-shaped steel are passivated, and the L-shaped steel expansion joints and the longitudinal and transverse section steel are welded and fixed.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921564856 | 2019-09-19 | ||
| CN2019215648566 | 2019-09-19 |
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| Publication Number | Publication Date |
|---|---|
| CN211815556U true CN211815556U (en) | 2020-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922140062.3U Active CN211815556U (en) | 2019-09-19 | 2019-12-02 | Structural system for longitudinal splicing of bridge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112921799A (en) * | 2021-03-01 | 2021-06-08 | 成都高速公路建设开发有限公司 | Construction method for urban bridge cross longitudinal and transverse expansion joints |
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2019
- 2019-12-02 CN CN201922140062.3U patent/CN211815556U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112921799A (en) * | 2021-03-01 | 2021-06-08 | 成都高速公路建设开发有限公司 | Construction method for urban bridge cross longitudinal and transverse expansion joints |
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Effective date of registration: 20201209 Address after: No.600 Dapu Road, Huangpu District, Shanghai 200023 Patentee after: SHANGHAI URBAN CONSTRUCTION CITY OPERATION (Group) Co.,Ltd. Patentee after: SHANGHAI MUNICIPAL MAINTENANCE & MANAGEMENT Co.,Ltd. Address before: Room 1002, 3447 Dongfang Road, Pudong New Area, Shanghai, 200125 Patentee before: SHANGHAI URBAN CONSTRUCTION CITY OPERATION (Group) Co.,Ltd. |