CN114032762A - Bridge expansion joint structure and construction method - Google Patents
Bridge expansion joint structure and construction method Download PDFInfo
- Publication number
- CN114032762A CN114032762A CN202111567001.0A CN202111567001A CN114032762A CN 114032762 A CN114032762 A CN 114032762A CN 202111567001 A CN202111567001 A CN 202111567001A CN 114032762 A CN114032762 A CN 114032762A
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- Prior art keywords
- bridge
- expansion joint
- concrete
- impact
- reinforcing
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010276 construction Methods 0.000 title claims abstract description 22
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 28
- 239000011384 asphalt concrete Substances 0.000 claims abstract description 24
- 239000004567 concrete Substances 0.000 claims abstract description 23
- 239000004568 cement Substances 0.000 claims abstract description 18
- 239000004574 high-performance concrete Substances 0.000 claims description 29
- 239000010426 asphalt Substances 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 6
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims 2
- 230000007704 transition Effects 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 238000012423 maintenance Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000001595 contractor effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003100 immobilizing effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention relates to the technical field of bridge expansion joints, in particular to a bridge expansion joint structure and a construction method, wherein the bridge expansion joint structure comprises an expansion joint body, the expansion joint body comprises a bridge body, cement concrete and the like are paved on the top surface of the bridge body, stirrups are pre-embedded in the bridge body, reinforcing ribs are fixedly installed on the side surfaces of the middle parts of the stirrups, reinforcing bolts are fixedly installed on the rear sides of the stirrups, and impact-resistant bodies are fixed on the top surfaces of the reinforcing bolts through nuts. The invention reduces the impact force of vehicle load through the anti-impact body, and prolongs the service life of the expansion joint; the arrangement of the reinforcing bolt and the reinforcing nut reduces the construction difficulty of the expansion joint body and improves the construction quality; set up pouring type concrete through expansion joint body top surface, realize with the steady transition of bridge deck pavement asphalt concrete rigidity, vibrations when reducing the driving improve impact resistance, and then reduce the driving noise, improve the driving travelling comfort.
Description
Technical Field
The invention relates to the technical field of bridge expansion joints, in particular to a bridge expansion joint structure and a construction method.
Background
A bridge expansion joint is a structure provided along the longitudinal bridge ends of a bridge structure in order to prevent the bridge from longitudinal deformation due to climate temperature changes (thermal expansion and cold contraction).
The existing bridge expansion joint is welded by profile steel and embedded steel bars, so that the construction requirement is high, and the application working medium quantity is difficult to control. The existing bridge expansion joint top is provided with the section steel and the notch steel fiber concrete, the rigidity difference of the section steel and the notch steel fiber concrete with the bridge deck asphalt pavement is large, the large deformation difference is easily formed under the load effect, the impact resistance is poor, the driving noise is loud, and the driving comfort is poor. In the later maintenance stage, if the expansion joint is damaged, the existing bridge expansion joint is difficult to maintain and replace, notch concrete needs to be dug out, profile steel needs to be welded again, the road traffic influence is large, and the social influence is adverse.
Disclosure of Invention
The invention provides a bridge expansion joint structure and a construction method thereof, which are used for solving the problem of the existing expansion joint in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a bridge expansion joint structure, includes the expansion joint body, its characterized in that: the expansion joint includes the pontic at the body, cement concrete and pouring type asphalt concrete have been laid to the top surface of pontic, high performance concrete has been laid in cement concrete's left side, and pouring type asphalt concrete sets up the top at high performance concrete and cement concrete, high performance concrete inside is fixed with the stirrup, the stirrup pre-buried in the pontic, the middle part side fixed mounting of stirrup has the strengthening rib, the rear side fixed mounting of stirrup has the reinforcing bolt, the top surface fixed mounting of reinforcing bolt is equipped with the impact resistance body, screws up fixedly with the nut between impact resistance body and the reinforcing bolt, and the impact resistance body bottom is equipped with two rows of fixed reinforcing bars of using, the mounting groove has been seted up on the lateral wall of the impact resistance body, the inside fixed mounting of mounting groove has the elastic webbing.
Preferably, the bridge body is two sets of, two sets of the bridge body symmetry installation, and there is the gap in the middle part of two sets of bridge bodies, the top surface of bituminous paving layer and pouring type asphalt concrete flushes, the bridge body flushes with high performance concrete, the side of impact resistance body.
Preferably, the stirrup is of an L-shaped structure and is embedded in the bridge body, two ends of the stirrup are fixedly installed in the bridge body, the top surface of the impact-resistant body is flush with the top surface of the poured asphalt concrete, and the two groups of impact-resistant bodies are connected by an elastic belt.
Preferably, the top surface of high performance concrete and the top surface of cement concrete are flush, reduce vibrations and noise, improve driving comfort.
Preferably, the impact resistant body is connected with the high-performance concrete through bolts and nuts, so that the welding process is reduced, the construction difficulty is reduced, and the construction quality is ensured.
Preferably, in the maintenance stage, the replacement of the impact-resistant body is very convenient and fast, and only the nut is loosened, the impact-resistant body is replaced, and the nut is screwed down again.
A construction method of a bridge expansion joint structure comprises the following specific steps:
(1) placing and fixing the reinforcing ribs;
(2) placing reinforcing bolts, impact-resistant bodies and nuts, leveling the top surfaces of the two groups of impact-resistant bodies (18), and primarily screwing the nuts;
(3) pouring high-performance concrete, wherein the high-performance concrete is flush with the cement concrete;
(4) after the high-performance concrete is solidified, constructing the cast asphalt concrete (14), wherein the top surface of the cast asphalt concrete is flush with the asphalt pavement layer;
(5) screwing down the nut;
(6) an elastic belt is arranged in the mounting groove.
Compared with the prior art, the invention has the beneficial effects that: the anti-impact body is fixed by the reinforcing bolt and the nut, so that the construction difficulty is greatly reduced, and the construction quality is improved; improve the durability of expansion joint, shock resistance and reduce the driving noise, adopt the bolt fastening system, make things convenient for the later stage to follow and trade and maintain.
The existing expansion joint realizes the connection of the impact resistant body and the embedded steel bars through welding, the process is complex, and the welding quality is difficult to control. When this expansion joint used, realized resisting being connected of assaulting body and body with bolt and nut, greatly reduced the construction degree of difficulty, made construction quality obtain guaranteeing.
When the vehicle anti-impact device is used, a vehicle can move on the top surface of the expansion joint body, and the pouring type asphalt layer on the top surface of the anti-impact body is arranged, so that the rigidity of the material is stably transited, the vibration and the impact are reduced, the noise is reduced, and the driving comfort is improved.
Through the bolt and nut mode connection, later stage is in the maintenance stage, makes the change at expansion joint very convenient, quick, has reduced the influence to the traffic flow, has improved social greatly.
Drawings
FIG. 1 is a schematic sectional view of an expansion joint body according to the present invention;
FIG. 2 is a schematic top view of the expansion joint body according to the present invention;
in the figure: 1. an expansion joint body; 11. a bridge body; 12. an asphalt pavement layer; 142. high performance concrete; 15. hooping; 16. reinforcing ribs; 17. a reinforcing bolt; 144. a nut; 18. An impact resistant body; 19. mounting grooves; 110. an elastic band; 42. fixing reinforcing steel bars; 14. pouring asphalt concrete; 143. and (3) cement concrete.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, an embodiment of the present invention is shown:
the utility model provides a bridge expansion joint structure, includes expansion joint body 1, its characterized in that: the expansion joint comprises a bridge body 11 on a body 1, cement concrete 143 and cast asphalt concrete 14 are paved on the top surface of the bridge body 11, the high-performance concrete 142 is laid on the left side of the cement concrete 143, the cast asphalt concrete 14 is arranged above the high-performance concrete 142 and the cement concrete 143, the high-performance concrete 142 is internally fixed with a stirrup 15, the stirrup 15 is pre-embedded in the bridge body 11, a reinforcing rib 16 is fixedly arranged on the side surface of the middle part of the stirrup 15, a reinforcing bolt 17 is fixedly arranged on the rear side of the stirrup 15, the top surface of the reinforcing bolt 17 is fixedly provided with an anti-impact body 18, the anti-impact body 18 and the reinforcing bolt 17 are screwed and fixed by a nut 144, the bottom of the anti-impact body 18 is provided with two rows of reinforcing steel bars 42 for fixing, an installation groove 19 is formed in the side wall of the impact resistant body 18, and an elastic band 110 is fixedly installed inside the installation groove 19.
Further, the two sets of the bridge bodies 11 are provided, the two sets of the bridge bodies 11 are symmetrically installed, a gap exists in the middle of each of the two sets of the bridge bodies 11, the asphalt pavement 12 and the poured asphalt concrete 14 are provided, and the bridge bodies 11 are flush with the side surfaces of the high-performance concrete 142 and the impact resistant body 18.
Furthermore, the stirrup 15 is of an "L" shaped structure and is embedded in the bridge body 11, two ends of the stirrup 15 are fixedly installed inside the bridge body 11, the top surface of the impact-resistant body 18 is flush with the top surface of the poured asphalt concrete 14, and the two sets of impact-resistant bodies 18 are connected by the elastic band 110.
Further, the top surface of the high performance concrete 142 is flush with the top surface of the cement concrete 143.
A construction method of a bridge expansion joint structure comprises the following specific steps:
(7) placing and fixing the reinforcing ribs 16;
(8) placing the reinforcing bolts 17, the impact resisting bodies 18 and the nuts 144, leveling the top surfaces of the two groups of impact resisting bodies 18, and primarily screwing the nuts 144;
(9) pouring high-performance concrete 142, wherein the high-performance concrete 142 is flush with the cement concrete 143;
(10) after the high-performance concrete 142 is solidified, constructing the cast asphalt concrete 14;
(11) tightening the nut 144;
(12) an elastic band 110 is installed in the installation groove 19.
The working principle is as follows:
during construction, firstly placing and fixing the reinforcing ribs 16, then placing the reinforcing bolts 17, the impact-resistant blocks 18 and the nuts 144, leveling the top surfaces of the two groups of impact-resistant blocks 18, and primarily screwing the nuts 144; pouring high-performance concrete 142, wherein the high-performance concrete 142 is flush with the cement concrete 143; pouring the cast asphalt concrete 14; tightening the nut 144; the elastic band 110 is installed in the installation groove 19, and the construction of the expansion joint body 1 can be completed.
During construction, the connection between the impact-resistant body 18 and the high-performance concrete 142 is realized by the bolt 17 and the nut 144, so that the welding process is reduced, the construction difficulty is greatly reduced, and the construction quality is ensured.
During the use, the vehicle moves at expansion joint body 1 and pouring type asphalt concrete 14's top surface, and pouring type asphalt concrete 14 all belongs to elastic material, and is less with 14 elastic modulus differences of pouring type asphalt concrete moreover, realizes the steady transition of different material rigidity, and the deformation difference different sex that the vehicle load formed is less, has reduced vibrations, has reduced the noise. When the vehicle moves on the top surface of the expansion joint body 1, the vehicle load is transferred to the impact resisting body 18, so that the impact load transferred to the impact resisting body 18 by the vehicle is greatly reduced, and the service life of the expansion joint body 1 is prolonged. Meanwhile, the expansion and contraction effect caused by temperature change is also self-adaptive through the elastic band 110.
During the curing phase, replacement and maintenance are required if the impact resistant body 18 is broken. The replacement can be completed by loosening the nut 144, immobilizing the bolt 17, resisting the impact body 18 again, and tightening the nut 144. The expansion joint is convenient and quick to replace, the influence on traffic flow is reduced, and social benefits are greatly improved.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (5)
1. The utility model provides a bridge expansion joint structure, includes expansion joint body (1), its characterized in that: the expansion joint comprises a bridge body (11) on a body (1), cement concrete (143) and cast asphalt concrete (14) are laid on the top surface of the bridge body (11), high-performance concrete (142) is laid on the left side of the cement concrete (143), the cast asphalt concrete (14) is arranged above the high-performance concrete (142) and the cement concrete (143), stirrups (15) are fixed inside the high-performance concrete (142), the stirrups (15) are embedded in the bridge body (11), reinforcing ribs (16) are fixedly installed on the side surfaces of the middle of the stirrups (15), reinforcing bolts (17) are fixedly installed on the rear sides of the stirrups (15), impact-resistant bodies (18) are fixedly installed on the top surfaces of the reinforcing bolts (17), the impact-resistant bodies (18) and the reinforcing bolts (17) are screwed and fixed by nuts (144), two rows of reinforcing steel bars (42) for fixing are arranged at the bottoms of the impact-resistant bodies (18), the side wall of the impact resistance body (18) is provided with a mounting groove (19), and an elastic belt (110) is fixedly mounted inside the mounting groove (19).
2. The bridge expansion joint structure of claim 1, wherein: the novel asphalt concrete pouring type asphalt concrete bridge is characterized in that the bridge bodies (11) are arranged in two groups, the bridge bodies (11) are symmetrically arranged, gaps exist in the middle of the two groups of bridge bodies (11), the top surfaces of the asphalt pavement layer (12) and the pouring type asphalt concrete (14) are flush, and the bridge bodies (11) are flush with the side surfaces of the high-performance concrete (142) and the impact-resistant body (18).
3. The bridge expansion joint structure of claim 1, wherein: the reinforcement stirrup (15) is of an L-shaped structure and is embedded in the bridge body (11), two ends of the reinforcement stirrup (15) are fixedly installed inside the bridge body (11), the top surface of the impact-resistant body (18) is flush with the top surface of the poured asphalt concrete (14), and the two groups of impact-resistant bodies (18) are connected through an elastic belt (110).
4. The bridge expansion joint structure of claim 1, wherein: the top surface of the high performance concrete (142) is flush with the top surface of the cement concrete (143).
5. A construction method applied to the bridge expansion joint structure of any one of claims 1 to 4, characterized by comprising the following concrete steps:
(1) placing and fixing the reinforcing ribs (16);
(2) placing a reinforcing bolt (17), impact-resistant bodies (18) and nuts (144), leveling the top surfaces of the two groups of impact-resistant bodies (18), and primarily screwing the nuts (144);
(3) pouring high-performance concrete (142), wherein the high-performance concrete (142) is flush with the cement concrete (143);
(4) after the high-performance concrete (142) is solidified, constructing the cast asphalt concrete (14);
(5) tightening the nut (144);
(6) an elastic band (110) is installed in the installation groove (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111567001.0A CN114032762A (en) | 2021-12-20 | 2021-12-20 | Bridge expansion joint structure and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111567001.0A CN114032762A (en) | 2021-12-20 | 2021-12-20 | Bridge expansion joint structure and construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114032762A true CN114032762A (en) | 2022-02-11 |
Family
ID=80140965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111567001.0A Pending CN114032762A (en) | 2021-12-20 | 2021-12-20 | Bridge expansion joint structure and construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114032762A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1350739A (en) * | 1962-12-07 | 1964-01-31 | Boussiron Soc D Entreprises | Expansion joint for civil engineering structures |
| GB1418792A (en) * | 1972-10-25 | 1975-12-24 | Precontrainte Et Dequipement D | Expansion joint in a roadway |
| US3977802A (en) * | 1975-08-04 | 1976-08-31 | Structural Accessories, Inc. | Expansion joint and seal |
| CN1560370A (en) * | 2004-03-06 | 2005-01-05 | 常熟橡胶厂 | Anchorage mechanism for apparatus of bridge expansion joint |
| CN1560371A (en) * | 2004-03-06 | 2005-01-05 | 常熟橡胶厂 | Apparatus of expansion joint for bridge |
| CN202830755U (en) * | 2012-09-13 | 2013-03-27 | 江苏淮安交通勘察设计研究院有限公司 | Prestress anchoring type bridge retractable device convenient to maintain |
| WO2014104874A1 (en) * | 2012-12-28 | 2014-07-03 | Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno | Roadway section including an expansion joint device with an exchangeable cartridge, a roadway structure comprising a first and a second of such roadway sections, a method of manufacturing such a roadway section and a method of replacing an expansion joint in such a roadway section |
| KR101785624B1 (en) * | 2017-07-10 | 2017-10-17 | 이노진 | Precast expansion joints and method of construction for easy maintenance |
| CN107386103A (en) * | 2017-07-27 | 2017-11-24 | 北京欧亚机械设备股份有限公司 | Bridge expanssion joint and its construction technology |
| CN113293698A (en) * | 2021-07-02 | 2021-08-24 | 中裕铁信交通科技股份有限公司 | Highway bridge multi-joint expansion device and installation method thereof |
-
2021
- 2021-12-20 CN CN202111567001.0A patent/CN114032762A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1350739A (en) * | 1962-12-07 | 1964-01-31 | Boussiron Soc D Entreprises | Expansion joint for civil engineering structures |
| GB1418792A (en) * | 1972-10-25 | 1975-12-24 | Precontrainte Et Dequipement D | Expansion joint in a roadway |
| US3977802A (en) * | 1975-08-04 | 1976-08-31 | Structural Accessories, Inc. | Expansion joint and seal |
| CN1560370A (en) * | 2004-03-06 | 2005-01-05 | 常熟橡胶厂 | Anchorage mechanism for apparatus of bridge expansion joint |
| CN1560371A (en) * | 2004-03-06 | 2005-01-05 | 常熟橡胶厂 | Apparatus of expansion joint for bridge |
| CN202830755U (en) * | 2012-09-13 | 2013-03-27 | 江苏淮安交通勘察设计研究院有限公司 | Prestress anchoring type bridge retractable device convenient to maintain |
| WO2014104874A1 (en) * | 2012-12-28 | 2014-07-03 | Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno | Roadway section including an expansion joint device with an exchangeable cartridge, a roadway structure comprising a first and a second of such roadway sections, a method of manufacturing such a roadway section and a method of replacing an expansion joint in such a roadway section |
| KR101785624B1 (en) * | 2017-07-10 | 2017-10-17 | 이노진 | Precast expansion joints and method of construction for easy maintenance |
| CN107386103A (en) * | 2017-07-27 | 2017-11-24 | 北京欧亚机械设备股份有限公司 | Bridge expanssion joint and its construction technology |
| CN113293698A (en) * | 2021-07-02 | 2021-08-24 | 中裕铁信交通科技股份有限公司 | Highway bridge multi-joint expansion device and installation method thereof |
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