CN102094387B - Cushion block for bridge bearing - Google Patents
Cushion block for bridge bearing Download PDFInfo
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- CN102094387B CN102094387B CN2010106176150A CN201010617615A CN102094387B CN 102094387 B CN102094387 B CN 102094387B CN 2010106176150 A CN2010106176150 A CN 2010106176150A CN 201010617615 A CN201010617615 A CN 201010617615A CN 102094387 B CN102094387 B CN 102094387B
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- cushion block
- bridge
- bearing
- steel
- lower cushion
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Abstract
The invention discloses a cushion block for a bridge bearing. The cushion block comprises a lower cushion block (2) and an upper cushion block (3) which are sequentially arranged on a bridge pier (7). The cushion block for a bridge bearing has the advantages of effectively saving reconstruction cost of the cushion block in jacking reconstruction of a bridge, lowering implementation cost, and reducing weight of the cushion block with smaller influence on an old structure.
Description
Technical field
The present invention relates to the bridge facility technical field, relate in particular to a kind of bridge pad cushion block.
Background technology
At present, along with the continuous quickening of urbanization process.Original road road network can not satisfy transport need, the corresponding improvement project that also causes more and more elevated bridges.In general improvement project, because newly-designed road alignment and intrinsic difference, except changing bigger employing pier column transformation, part needs through the cradle under the superstructure is transformed.
Cushion block is generally cast-in-place concrete structure, and upper and lower cushion block stretches into column through reinforcing bar respectively or the enough anchorage lengths of case beam are connected with structure.At present; In the improvement project of adjustment bridge floor absolute altitude; To the general mode of setting up the steel cushion block or building epoxy resin mortar that adopts of adjustment of bearing cushion block, but, adopt steel cushion block steel using amount bigger for the situation of height of support adjustment size greater than 300mm; Not only increased material usage and increased from heavy load, very high and intensity is difficult to control to construction requirement and adopt epoxy resin mortar.
Therefore, those skilled in the art is devoted to develop a kind of from heavy and light, the simple bridge pad cushion block of construction.
Summary of the invention
Because the above-mentioned defective of prior art, technical problem to be solved by this invention provides a kind of from heavy and light, the simple bridge pad cushion block of construction.
For realizing above-mentioned purpose, the invention provides a kind of bridge pad cushion block, comprise the lower cushion block and the last cushion block that place successively on the bridge pier.
Preferable, said lower cushion block is cast-in-place steel fiber reinforced concrete structure.
Preferable, said bridge pier is provided with the first bearing cushion block; Said lower cushion block is coated on the outside of the said first bearing cushion block.
Preferable, said lower cushion block is outside equipped with steel frame; Steel fibrous concrete is cast in the space that said steel frame surrounds.
Preferable, be provided with the reinforcing bar cover in the said lower cushion block.
Preferable, said reinforcing bar cover is set to well shape structure.
Preferable, said reinforcing bar cover comprises three layers that laterally arrange up and down.
Preferable, said upward cushion block is a wedge structure.
Preferable, said lower cushion block and said going up between the cushion block are provided with bearing.
The invention has the beneficial effects as follows: effectively saved the improvement expenses of bridge cushion block in lifting reconstruction, reduced implementation cost; Alleviated cushion block weight simultaneously, littler to old effect on structure.
Below will combine accompanying drawing that the technique effect of design of the present invention, concrete structure and generation is described further, to understand the object of the invention, characteristic and effect fully.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention 1;
Fig. 2 is a structural representation of going up cushion block among Fig. 1;
The structural representation of Fig. 3 embodiment of the invention 2;
Fig. 4 is the structural representation of the embodiment of the invention 3;
Fig. 5 is the A-A sectional view of Fig. 3;
Fig. 6 is the structural representation of the embodiment of the invention 4.
The specific embodiment
Embodiment 1: as depicted in figs. 1 and 2, a kind of bridge pad cushion block comprises the lower cushion block 2 and last cushion block 3 that place successively on the bridge pier 7.Lower cushion block 2 is cast-in-place steel fiber reinforced concrete structure, and last cushion block 3 is a wedge-shaped steel plate.Bridge pier 7 is provided with the first bearing cushion block 1, promptly former bearing cushion block, and lower cushion block 2 is coated on the outside of the first bearing cushion block 1.
On-the-spot according to following method construction: as 1) old bridge superstructure 8 to be jack-uped; 2) at the first bearing cushion block, 1 place cast-in-place steel fibrous concrete to form lower cushion block 2; 3) paste cushion block 3 under the old bridge superstructure; 4) treat that concrete strength reaches the beam that falls after 100% intensity.
Because the lower cushion block of newly establishing 2 is enclosed within on the former bearing cushion block 1, so the horizontal shear resistance of bridge pad cushion block is not less than former bearing cushion block.And the bridge pad cushion block need not to cut former cushion block, is the reinforcement to former cushion block, and through the on-the-spot proof that detects, this cushion block easy construction has reduced rolled steel dosage, and intensity can guarantee.
Embodiment 2: as shown in Figure 3, the structure of present embodiment and embodiment 1 are basic identical, and different is: be provided with reinforcing bar cover 5 in the lower cushion block 2.Other structures of present embodiment are identical with embodiment 1.
Because reinforcing bar overlaps 5 setting, further strengthened the intensity of lower cushion block 2.
Embodiment 3: like Fig. 4 and shown in Figure 5, the structure of present embodiment and embodiment 1 are basic identical, and different is: lower cushion block 2 is outside equipped with steel frame 4, and steel fibrous concrete is cast in the space that steel frame 4 surrounded.And be provided with three layers of well shape reinforcing bar cover 5 that laterally arranges up and down in the lower cushion block 2.Other structures of present embodiment are identical with embodiment 1.
Constructing according to following method in the scene: after 1) old bridge superstructure 8 being jack-uped, around old bridge cushion block 1, lays the steel frame 4 that has welded; 2) welded reinforcement cover 5 in steel frame 4; 3) cast steel fibrous concrete in steel frame 4; 4) paste wedge-shaped steel plate 3 under the old bridge superstructure; 5) treat the beam that falls after concrete strength reaches 100%.
During cast, 4 pairs of constraints that form the steel fibrous concrete of lower cushion block 2 of steel frame can increase its poisson's ratio, thereby guarantee its compressive strength, have the effect of template simultaneously concurrently, and it is more convenient to construct.
Embodiment 4: as shown in Figure 6, the structure of present embodiment and job practices and embodiment 3 are basic identical, and different is to be provided with bearing between lower cushion block 2 and the last cushion block 3.During construction, treat that concrete strength reaches 100% intensity after, put bearing earlier, beam again falls.Other structures and the job practices of present embodiment are identical with embodiment 3.
Because the setting of bearing can make the volume of cushion block littler, thereby further reduce the deadweight of bridge pad cushion block.
More than describe preferred embodiment of the present invention in detail.The ordinary skill that should be appreciated that this area need not creative work and just can design according to the present invention make many modifications and variation.Therefore, all technician in the art all should be in the determined protection domain by claims under this invention's idea on the basis of existing technology through the available technical scheme of logical analysis, reasoning, or a limited experiment.
Claims (5)
1. a bridge pad cushion block is characterized in that: comprise the lower cushion block (2) and the last cushion block (3) that place successively on the bridge pier (7);
Said lower cushion block (2) is cast-in-place steel fiber reinforced concrete structure;
Said bridge pier (7) is provided with the first bearing cushion block (1); Said lower cushion block (2) is coated on the outside of the said first bearing cushion block (1);
Said lower cushion block (2) is outside equipped with steel frame (4); Steel fibrous concrete is cast in the space that said steel frame (4) surrounded;
Be provided with reinforcing bar cover (5) in the said lower cushion block (2).
2. bridge pad cushion block as claimed in claim 1 is characterized in that: said reinforcing bar cover (5) is set to well shape structure.
3. bridge pad cushion block as claimed in claim 1 is characterized in that: said reinforcing bar cover (5) comprises three layers that laterally arrange up and down.
4. bridge pad cushion block as claimed in claim 1 is characterized in that: said upward cushion block (3) is a wedge structure.
5. like claim 1 or 4 described bridge pad cushion blocks, it is characterized in that: said lower cushion block (2) and said going up between the cushion block (3) are provided with bearing (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106176150A CN102094387B (en) | 2010-12-30 | 2010-12-30 | Cushion block for bridge bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106176150A CN102094387B (en) | 2010-12-30 | 2010-12-30 | Cushion block for bridge bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102094387A CN102094387A (en) | 2011-06-15 |
| CN102094387B true CN102094387B (en) | 2012-07-25 |
Family
ID=44127638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010106176150A Active CN102094387B (en) | 2010-12-30 | 2010-12-30 | Cushion block for bridge bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102094387B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2054092B (en) * | 1979-07-17 | 1983-04-07 | Dixon International Ltd | Elastomeric stack acting as bridge bearing |
| CN2229467Y (en) * | 1995-09-15 | 1996-06-19 | 梁双库 | Rubber support for bridge |
| CN2416134Y (en) * | 2000-01-18 | 2001-01-24 | 衡水宝力工程橡胶有限公司 | Bridge slope bearing |
| CN2823315Y (en) * | 2005-05-10 | 2006-10-04 | 上海市城市建设设计研究院 | Wedge bottom plate for bridge pad |
| CN201942994U (en) * | 2010-12-30 | 2011-08-24 | 上海市城市建设设计研究院 | Bridge bearing pad |
-
2010
- 2010-12-30 CN CN2010106176150A patent/CN102094387B/en active Active
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| Publication number | Publication date |
|---|---|
| CN102094387A (en) | 2011-06-15 |
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| C10 | Entry into substantive examination | ||
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| C14 | Grant of patent or utility model | ||
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Owner name: SHANGHAI URBAN CONSTRUCTION DESIGN + RESEARCH INST Free format text: FORMER NAME: SHANGHAI MUNICIPAL URBAN CONSTRUCTION DESIGN AND RESEARCH INST. |
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| CP03 | Change of name, title or address |
Address after: 200011 Tibet South Road, Shanghai, No. 1170, No. Patentee after: Shanghai Urban Construction Design & Research Institute Address before: 200125 Dongfang Road, Shanghai, Pudong New Area, No. 3447 Patentee before: Shanghai Urban Construction Design and Research Institute |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 200011 Tibet South Road, Shanghai, No. 1170, No. Patentee after: Shanghai urban construction design & Research Institute (Group) Co., Ltd. Address before: 200011 Tibet South Road, Shanghai, No. 1170, No. Patentee before: Shanghai Urban Construction Design & Research Institute |