CN111719421A - Flexible and semi-flexible modulus combined seamless expansion joint and construction method - Google Patents
Flexible and semi-flexible modulus combined seamless expansion joint and construction method Download PDFInfo
- Publication number
- CN111719421A CN111719421A CN202010717024.4A CN202010717024A CN111719421A CN 111719421 A CN111719421 A CN 111719421A CN 202010717024 A CN202010717024 A CN 202010717024A CN 111719421 A CN111719421 A CN 111719421A
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- flexible
- semi
- expansion joint
- bodies
- asphalt
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- 238000010276 construction Methods 0.000 title claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 33
- 239000010426 asphalt Substances 0.000 claims abstract description 33
- 239000010959 steel Substances 0.000 claims abstract description 33
- 239000010410 layer Substances 0.000 claims abstract description 28
- 239000004568 cement Substances 0.000 claims abstract description 20
- 239000002344 surface layer Substances 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims description 8
- 239000004567 concrete Substances 0.000 claims description 4
- 239000011374 ultra-high-performance concrete Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims 1
- 230000006978 adaptation Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 description 7
- 229910000754 Wrought iron Inorganic materials 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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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
- E01D19/00—Structural or constructional details of bridges
- E01D19/06—Arrangement, construction or bridging of expansion joints
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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
- E01D19/00—Structural or constructional details of bridges
- E01D19/08—Damp-proof or other insulating layers; Drainage arrangements or devices ; Bridge deck surfacings
- E01D19/083—Waterproofing of bridge decks; Other insulations for bridges, e.g. thermal ; Bridge deck surfacings
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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
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to a flexible and semi-flexible modulus combined seamless expansion joint and a construction method, which comprises a beam body, a bridge deck plate and an asphalt surface layer, wherein the bridge deck plate is laid on the upper surface of the beam body, the asphalt surface layer is laid on the upper surface of the bridge deck plate, sponge bodies are filled in gaps between adjacent beam bodies and between the bridge deck plates on the adjacent beam bodies, the upper end of each sponge body is provided with a steel plate, the asphalt surface layers on the adjacent beam bodies are connected through an elastic expansion body, the elastic expansion body is arranged above the steel plates, and the elastic expansion body is formed by sequentially and alternately combining a plurality of flexible asphalt layers and semi-flexible cement layers along the length direction of the asphalt surface layers. The ability of seamless bridge adaptation deformation can be effectively strengthened, the driving comfort is improved.
Description
Technical Field
The invention relates to a flexible and semi-flexible modulus combined seamless expansion joint and a construction method.
Background
Bridge expansion joints are weak points in the design of bridge structures, have become one of the difficult problems in the construction and maintenance of bridges, and are expensive and require long-term maintenance. Designers and scholars in China carry out valuable exploration on the aspects of mechanisms, performance, materials and the like of the expansion joint, play a positive role in solving the problem of longitudinal deformation of the bridge, but cannot fundamentally solve the problem that the expansion joint is easy to damage. Along with the development of economy, the traffic pressure is increased, the damage phenomenon of the bridge expansion joint is increasingly serious, and the pressure for maintaining the bridge expansion joint is also increased increasingly due to the increase of the maintenance period and the maintenance cost.
The problem of bridge expansion joint fragile is solved, mainly realize through improving telescoping device or canceling the expansion joint. The expansion joint can be improved only by reducing the replacement period and the damage degree of the expansion joint, but the problems of maintenance and replacement of the expansion joint cannot be fundamentally solved, the problems of difficult maintenance and high maintenance cost still exist, and the method for improving the expansion joint only can treat the symptoms and not the root causes.
Disclosure of Invention
The invention provides a flexible and semi-flexible modulus combined seamless expansion joint and a construction method.
The invention solves the technical problem by adopting the scheme that the flexible and semi-flexible modulus combined seamless expansion joint comprises a beam body, a bridge deck plate and an asphalt surface layer, wherein the bridge deck plate is paved on the upper surface of the beam body, the asphalt surface layer is paved on the upper surface of the bridge deck plate, sponge bodies are filled in gaps between adjacent beam bodies and between the bridge deck plates on the adjacent beam bodies, the upper ends of the sponge bodies are provided with steel plates, the asphalt surface layers on the adjacent beam bodies are connected through elastic expansion bodies, the elastic expansion bodies are arranged above the steel plates, and the elastic expansion bodies are formed by sequentially and alternately combining a plurality of flexible asphalt layers and semi-flexible cement layers along the length direction of the asphalt surface layers.
Furthermore, a steel bar penetrates through the elastic telescopic body, a steel sleeve is installed at the end of the steel bar, and the steel sleeve extends into the asphalt surface layer.
Further, the semi-flexible cement layer is made of a high-performance cement-based material.
Further, the semi-flexible cement layer is an ECC concrete layer or an ultra-high performance concrete layer.
Further, the height of the sponge body is the sum of the height of the beam body and the height of the bridge deck.
Furthermore, the height of the asphalt surface layer is consistent with that of the elastic telescopic body.
Furthermore, the length of the steel plate is not less than that of the sponge body, and the length of the steel plate is not more than that of the elastic telescopic body.
A construction method of a seamless expansion joint with combined performance and semi-flexible modulus comprises the following steps:
(1) prefabricating an elastic telescopic body;
(2) constructing the beam bodies on the two sides and the bridge deck;
(3) constructing the beam bodies on the two sides and the bridge deck, filling sponge bodies between the beam bodies on the two sides after the construction is finished, and paving steel plates at the upper ends of the sponge bodies;
(4) an elastic telescopic body is arranged on the steel plate;
(5) and paving the asphalt surface layers to connect the asphalt surface layers on the beam bodies on the two sides through the elastic telescopic body.
Compared with the prior art, the invention has the following beneficial effects: simple structure, reasonable in design, it is convenient to change, and the flexible displacement needs that seamless bridge access board was adapted to the cavernosum between the elastic expansion body that utilizes flexible asphalt layer and semi-flexible cement basic unit to make up in turn to form and the roof beam body play the effect of release cement concrete pavement thermal expansion pressure stress simultaneously, can effectively strengthen the ability that seamless bridge adaptation warp, improve the driving comfort, be applicable to the great integral or semi-integral seamless bridge of vertical deformation.
Drawings
The invention is further described with reference to the following figures.
FIG. 1 is a schematic structural view of the present invention.
In the figure: 1-a beam body; 2-a bridge deck; 3-a sponge body; 4-a semi-flexible cement-based layer; 5-a flexible asphalt layer; 6-steel plate; 7-a steel bar; 8-a sleeve; 9-asphalt surface course.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
As shown in figure 1, the seamless expansion joint combining flexibility and semi-flexibility modulus comprises a beam body 1, a bridge deck 2 and an asphalt surface course 9, wherein the bridge deck is laid on the upper surface of the beam body, the asphalt surface course is laid on the upper surface of the bridge deck, a sponge body 3 is filled in gaps between adjacent beam bodies and between the bridge decks on the adjacent beam bodies, the sponge body is used for tightly plugging a gap between a lead plate and a wiring road surface, so as to prevent the expansion of the joint material and the like during construction from being blocked by filling the joint material and the like, prevent the water vapor and the like from invading from the lower part to corrode the upper steel plate in the later period, the upper end of the sponge body is provided with a steel plate 6 which is used for preventing asphalt materials on the sponge body from falling into a lower side gap under the action of vehicle load and stretching deformation, the asphalt surface layers on adjacent beam bodies are connected through an elastic stretching body, the elastic telescopic body is arranged above the steel plate and is formed by sequentially and alternately combining a plurality of flexible asphalt layers 5 and semi-flexible cement layers 4 along the length direction of an asphalt surface layer.
In this embodiment, wear to be equipped with rod iron 7 in the flexible expansion body, steel sleeve 8 is installed to the rod iron tip, and the steel sleeve stretches into in the pitch surface course.
In this embodiment, the semi-flexible cement layer is made of a high performance cement-based material.
In this embodiment, the semi-flexible cement layer is an ECC concrete layer or an ultra-high performance concrete layer.
In this embodiment, the height of the sponge is the sum of the heights of the beam and the bridge deck.
In this embodiment, the asphalt facing is at the same height as the elastic expansion body.
In this embodiment, the length of the steel plate is not less than that of the sponge body, and the length of the steel plate is not more than that of the elastic telescopic body.
A construction method of a seamless expansion joint with combined performance and semi-flexible modulus comprises the following steps:
(1) prefabricating an elastic telescopic body;
(2) constructing the beam bodies on the two sides and the bridge deck;
(3) constructing the beam bodies on the two sides and the bridge deck, filling sponge bodies between the beam bodies on the two sides after the construction is finished, and paving steel plates at the upper ends of the sponge bodies;
(4) an elastic telescopic body is arranged on the steel plate;
(5) and paving the asphalt surface layers to connect the asphalt surface layers on the beam bodies on the two sides through the elastic telescopic body.
The seamless expansion joint absorbs deformation by using an elastic expansion body formed by alternately combining the flexible asphalt layer and the semi-flexible cement base layer, and is characterized in that the high-performance cement-based material has stronger shear-resistant bearing capacity and good contraction deformation capacity in the axial direction, and the capacity of the novel expansion joint for absorbing the expansion deformation is greatly improved by combining the flexible asphalt layer and the semi-flexible cement base layer; meanwhile, the requirements of different expansion amounts of the whole bridge can be met by adjusting the longitudinal thickness, the distance and the number of the semi-flexible cement base layers, and the adaptability is strong; in addition, the suction device is simple in structure and convenient to replace, and only needs to perform local treatment on the bridge deck pavement structure.
If this patent discloses or refers to parts or structures that are fixedly connected to each other, the fixedly connected may be understood as: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).
In the description of this patent, it is to be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the patent, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.
The above-mentioned preferred embodiments, further illustrating the objects, technical solutions and advantages of the present invention, should be understood that the above-mentioned are only preferred embodiments of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a seamless expansion joint of flexibility and semi-flexible modulus combination which characterized in that: including the roof beam body, decking, pitch surface course, the decking is laid at the roof beam body upper surface, and the pitch surface course is laid at the decking upper surface, and the gap intussuseption between the adjacent roof beam body and between the decking on the adjacent roof beam body is filled with the cavernosum, the cavernosum upper end is provided with the steel sheet, is connected through the elastic expansion body between the pitch surface course on the adjacent roof beam body, the elastic expansion body sets up in the steel sheet top, and the elastic expansion body comprises a plurality of flexible asphalt layers and semi-flexible cement layer along pitch surface course length direction in proper order alternate combination.
2. A seamless expansion joint of combined flexible and semi-flexible modulus according to claim 1, characterized in that: the elastic telescopic body is internally provided with a steel bar in a penetrating way, the end part of the steel bar is provided with a steel sleeve, and the steel sleeve extends into the asphalt surface layer.
3. A seamless expansion joint of combined flexible and semi-flexible modulus according to claim 1, characterized in that: the semi-flexible cement layer is made of a high-performance cement-based material.
4. A seamless expansion joint of combined flexible and semi-flexible modules according to claim 3, wherein: the semi-flexible cement layer is an ECC concrete layer or an ultra-high performance concrete layer.
5. A seamless expansion joint of combined flexible and semi-flexible modulus according to claim 1, characterized in that: the height of the sponge body is the sum of the height of the beam body and the height of the bridge deck.
6. A seamless expansion joint of combined flexible and semi-flexible modulus according to claim 1, characterized in that: the asphalt surface layer is consistent with the elastic telescopic body in height.
7. A seamless expansion joint of combined flexible and semi-flexible modulus according to claim 1, characterized in that: the length of the steel plate is not less than that of the sponge body, and the length of the steel plate is not more than that of the elastic telescopic body.
8. A construction method of a seamless expansion joint with a combination of properties and semi-flexible modulus, which adopts the seamless expansion joint with a combination of flexible modulus and semi-flexible modulus as claimed in claim 2, characterized by comprising the following steps:
(1) prefabricating an elastic telescopic body;
(2) constructing the beam bodies on the two sides and the bridge deck;
(3) constructing the beam bodies on the two sides and the bridge deck, filling sponge bodies between the beam bodies on the two sides after the construction is finished, and paving steel plates at the upper ends of the sponge bodies;
(4) an elastic telescopic body is arranged on the steel plate;
(5) and paving the asphalt surface layers to connect the asphalt surface layers on the beam bodies on the two sides through the elastic telescopic body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010717024.4A CN111719421A (en) | 2020-07-23 | 2020-07-23 | Flexible and semi-flexible modulus combined seamless expansion joint and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010717024.4A CN111719421A (en) | 2020-07-23 | 2020-07-23 | Flexible and semi-flexible modulus combined seamless expansion joint and construction method |
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| Publication Number | Publication Date |
|---|---|
| CN111719421A true CN111719421A (en) | 2020-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010717024.4A Pending CN111719421A (en) | 2020-07-23 | 2020-07-23 | Flexible and semi-flexible modulus combined seamless expansion joint and construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111719421A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112239999A (en) * | 2020-11-25 | 2021-01-19 | 无锡市政设计研究院有限公司 | Novel bridge floor expansion joint structure |
| CN112239998A (en) * | 2020-11-25 | 2021-01-19 | 无锡市政设计研究院有限公司 | Construction method of novel bridge deck expansion joint structure |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104818669A (en) * | 2015-05-11 | 2015-08-05 | 苏交科集团股份有限公司 | Slipping type seamless telescopic device |
-
2020
- 2020-07-23 CN CN202010717024.4A patent/CN111719421A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104818669A (en) * | 2015-05-11 | 2015-08-05 | 苏交科集团股份有限公司 | Slipping type seamless telescopic device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112239999A (en) * | 2020-11-25 | 2021-01-19 | 无锡市政设计研究院有限公司 | Novel bridge floor expansion joint structure |
| CN112239998A (en) * | 2020-11-25 | 2021-01-19 | 无锡市政设计研究院有限公司 | Construction method of novel bridge deck expansion joint structure |
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