CN116856272B - Cast-in-situ water stop device for bridge deformation and construction method thereof - Google Patents
Cast-in-situ water stop device for bridge deformation and construction method thereof Download PDFInfo
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- CN116856272B CN116856272B CN202311114000.XA CN202311114000A CN116856272B CN 116856272 B CN116856272 B CN 116856272B CN 202311114000 A CN202311114000 A CN 202311114000A CN 116856272 B CN116856272 B CN 116856272B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 238000010276 construction Methods 0.000 title claims abstract description 17
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 16
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 158
- 239000010959 steel Substances 0.000 claims abstract description 158
- 239000010426 asphalt Substances 0.000 claims abstract description 68
- 229920000642 polymer Polymers 0.000 claims abstract description 67
- 239000011499 joint compound Substances 0.000 claims abstract description 59
- 238000005452 bending Methods 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 10
- 238000003466 welding Methods 0.000 claims description 7
- 230000000712 assembly Effects 0.000 claims description 6
- 238000000429 assembly Methods 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 239000002990 reinforced plastic Substances 0.000 claims 1
- 230000008859 change Effects 0.000 abstract description 3
- 230000008602 contraction Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000005060 rubber Substances 0.000 description 4
- 229920003048 styrene butadiene rubber Polymers 0.000 description 4
- 229910052717 sulfur Inorganic materials 0.000 description 4
- 239000011593 sulfur Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000003607 modifier Substances 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 239000003208 petroleum Substances 0.000 description 3
- 239000003381 stabilizer Substances 0.000 description 3
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 2
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 2
- 239000002174 Styrene-butadiene Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000008407 joint function Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000011115 styrene butadiene Substances 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
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
- E01D19/08—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
- E01D19/00—Structural or constructional details of bridges
- E01D19/06—Arrangement, construction or bridging of expansion joints
- E01D19/067—Flat continuous joints cast in situ
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to the field of bridge auxiliary facilities, in particular to a cast-in-situ water stop device for bridge deformation and a construction method thereof, wherein the cast-in-situ water stop device comprises two E-shaped steel, a bottom steel plate is arranged between the middle cross beams of the two E-shaped steel, and polymer modified asphalt joint compound is poured between the top of the bottom steel plate and the two E-shaped steel; and when the bridge generates thermal expansion and contraction, the cohesiveness between the polymer modified asphalt joint compound and the steel plate is strong, and the deformation can be recovered, so that the water stop device can well meet the deformation of the upper girder component caused by the change of the external environment, the stress can be fully released, and the safety and the reliability of the structure are ensured.
Description
Technical Field
The invention relates to the field of bridge auxiliary facilities, in particular to a cast-in-situ water stop device for bridge deformation and a construction method thereof.
Background
The cast-in-situ water stop device has the function of meeting the free deformation of the upper structure of the bridge, and the bridge deformation cast-in-situ water stop device is arranged between two beam ends, between the beam ends and the bridge abutment or at the hinge position of the bridge. The upper structure of the bridge can be freely stretched, firm and reliable, and the functions of smoothness in running, no jump, no noise and the like of the vehicle are guaranteed; meanwhile, the novel waterproof and waterproof composite material can prevent rainwater and garbage from being blocked by soil and penetrating into a beam body structure to influence the durability in use, and is easy to inspect, maintain, eliminate dirt and the like.
At present, the expansion joint of the highway bridge mainly takes the expansion joint of the modular bridge as a main part, and the expansion joint device generally comprises edge beams, center beams, waterproof rubber strips, control springs and other elements, but the expansion joint is easy to be blocked, easy to accumulate water, difficult to clean the joint and easy to age the rubber strips, and the service life is influenced. Therefore, we propose a cast-in-situ water stop device for bridge deformation and a construction method thereof to replace and put into use so as to solve the problems.
Disclosure of Invention
The invention aims to provide a cast-in-situ water stop device for bridge deformation and a construction method thereof so as to solve the technical problems.
In order to achieve the above purpose, the present invention provides the following technical solutions: a cast-in-situ water stop device for bridge deformation comprises two E-shaped steel, openings of the two E-shaped steel are oppositely arranged, a plurality of U-shaped fixing steel bars connected with bridge steel bars are fixedly connected to one side surface of the E-shaped steel, which is far away from each other, along the length direction, a bottom steel plate is placed between middle cross beams of the two E-shaped steel, the top of the bottom steel plate is abutted to the bottom of the cross beam, which is located at the uppermost part, of the E-shaped steel, and polymer modified asphalt joint compound is poured between the top of the bottom steel plate and the two E-shaped steel.
Preferably, the free end of the middle beam of the E-shaped steel is bent upwards to form a baffle part, the bottom steel plate is U-shaped steel, and the opening of the U-shaped steel is arranged towards the middle beam of the E-shaped steel.
Preferably, both ends of the U-shaped bottom steel plate are inwards bent to form hooks.
Preferably, the beams of the two E-shaped steels positioned at the uppermost part are arranged to be telescopic expansion plate assemblies, and when the polymer modified asphalt joint compound is poured, the top of the polymer modified asphalt joint compound is level with the top of the expansion plate assemblies;
the expansion plate assembly comprises fixed outer plates, sliding cavities are symmetrically formed in one ends, close to each other, of the fixed outer plates, sliding inner plates are connected in a sealing sliding mode in the inner cavities of the sliding cavities, and stop blocks flush with the side edges of the fixed outer plates are arranged on the side walls of one ends, close to each other, of the sliding inner plates.
Preferably, one ends of the two sliding inner plates, which are close to each other, are inwards recessed to form a filling groove, and when the polymer modified asphalt joint compound is poured, the polymer modified asphalt joint compound is poured into the filling groove.
Preferably, the inner wall of the filling groove is fixedly connected with a plurality of fixing rods along the length direction, and the outer wall of each fixing rod is fixedly connected with a plurality of fixing rings.
Preferably, each fixing ring outer wall is fixedly connected with a plurality of fixing blocks, and the fixing blocks between each fixing ring are arranged in a staggered mode.
Preferably, the fixed planking is kept away from one side inner chamber of slip inner panel and is seted up and is placed the chamber, and is equipped with the baffle between chamber and the filling groove, one side rigid coupling that polymer modified asphalt joint compound was kept away from to the slip inner panel has L type connecting rod, the bending end of L type connecting rod runs through the baffle and is located and places the intracavity, place and install the fixed axle between the relative both sides wall of chamber inner chamber, and the fixed axle runs through the bending end of L type connecting rod and with L type connecting rod sliding connection, the relative both ends outer wall fixedly connected with stopper of fixed axle, all be provided with the spring between the relative both sides face of the bending end of L type connecting rod and the two stoppers, and the spring housing is established at the fixed axle outer wall.
Preferably, the fixed shaft comprises two first fixed shafts respectively fixed on two opposite side walls of the placing cavity and a second fixed shaft detachably arranged between the two first fixed shafts, the outer wall of one end of the first fixed shaft, which is close to the second fixed shaft, and the outer walls of two ends of the second fixed shaft are respectively provided with a thread groove, and the limiting block is in threaded connection with the first fixed shaft and the second fixed shaft;
the bending part of the L-shaped connecting rod is upwards, and the top of the L-shaped connecting rod is inwards recessed to form a sliding groove matched with the fixed shaft;
the bottom of the placing cavity is fixedly connected with a plurality of bolt columns along the length direction of the E-shaped steel, a cover plate is arranged on the top of the E-shaped steel corresponding to the position cover of the placing cavity, and the cover plate is detachably connected with the bolt columns through bolts.
A construction method of a cast-in-situ water stop device for bridge deformation, the construction method comprising the following steps:
s1: e-shaped steel with a baffle part, U-shaped fixed steel bars and expansion plate components is prefabricated in a factory;
s2: e-shaped steel is respectively arranged at two sides of the bridge expansion joint, and U-shaped fixed steel bars on the side wall of the E-shaped steel are fixed with bridge steel bars through welding;
s2: installing a bottom steel plate between the two E-shaped steels, so that the bottom steel plate spans between the two E-shaped steels;
s3: heating the polymer modified asphalt joint compound to 190 ℃, filling the heated polymer modified asphalt joint compound into a gap between E-shaped steel at two sides by adopting a spray gun, filling the filling groove of the expansion plate assembly with the polymer modified asphalt joint compound, and pouring in a mode from high to low during pouring;
s4: and (3) naturally cooling the polymer modified asphalt joint compound to 70 ℃ to open traffic.
Compared with the prior art, the invention has the beneficial effects that:
the polymer modified asphalt joint compound obtained by casting the bridge water stop device can play a good role in waterproof, prevent bridge deck rain and sewage from penetrating into the upper structure of the bridge, play a good role in stopping water of the bridge, and prevent sundries such as bridge deck sand and the like from blocking gaps of the expansion joint device;
when the bridge expands with heat and contracts with cold, the polymer modified asphalt joint compound and the steel plate have strong cohesiveness and can be deformed and restored, so that the water stopping device can well meet the deformation of the upper girder component caused by the change of external environment, the stress is fully released, and the safety and reliability of the structure are ensured;
meanwhile, the water stop device is convenient and fast to construct on site, large mechanical equipment is not needed, and normal road surface vehicle traffic can be recovered quickly, so that the existing bridge expansion joint function is replaced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a water stop device according to the present invention;
FIG. 2 is a schematic elevational view of the structure of FIG. 1;
FIG. 3 is a schematic cross-sectional view of FIG. 2;
FIG. 4 is an enlarged schematic view of the structure shown at A in FIG. 3;
FIG. 5 is a schematic view of the structure of E-steel in the water stop device of the present invention;
FIG. 6 is a schematic view showing a connection structure of a fixing rod and a fixing ring in the water stop device of the present invention;
FIG. 7 is a schematic view of the structure of the L-shaped connecting rod and its connecting parts in the water stop device of the present invention;
fig. 8 is a schematic elevational view of the structure of fig. 7.
In the drawings, the list of components represented by the various numbers is as follows:
1. e-shaped steel; 11. a barrier section; 2. u-shaped fixed steel bars; 3. a bottom steel plate; 4. polymer modified asphalt joint compound; 5. a telescoping plate assembly; 51. fixing the outer plate; 52. a sliding chamber; 53. sliding the inner plate; 54. a stop block; 55. filling the groove; 56. a fixed rod; 57. a fixing ring; 58. a fixed block; 59. a placement cavity; 510. an L-shaped connecting rod; 5101. a sliding groove; 511. a fixed shaft; 5111. a first fixed shaft; 5112. a second fixed shaft; 512. a limiting block; 513. a spring; 514. a bolt post; 515. and a cover plate.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-8, the present invention provides a technical solution as follows:
a cast-in-situ water stop device for bridge deformation comprises two E-shaped steel 1, openings of the two E-shaped steel 1 are oppositely arranged, a plurality of U-shaped fixing steel bars 2 connected with bridge steel bars are fixedly connected on one side surface of the two E-shaped steel 1, which is far away from each other, along the length direction, a bottom steel plate 3 is placed between middle cross beams of the two E-shaped steel 1, the top of the bottom steel plate 3 is abutted to the bottom of the cross beam positioned at the uppermost part of the E-shaped steel 1, and polymer modified asphalt joint compound 4 is poured between the top of the bottom steel plate 3 and the two E-shaped steel 1.
Specifically, the middle beam free end of the E-shaped steel 1 is bent upwards to form a baffle part 11, the bottom steel plate 3 is U-shaped steel, and the opening of the U-shaped steel is arranged towards the middle beam of the E-shaped steel 1.
From the above description, it is clear that: through setting up the separation stop portion and making at bridge expend with heat and contract with cold in-process, the end steel sheet can not follow and drop between two E shaped steel.
Specifically, both ends of the U-shaped bottom steel plate 3 are inwards bent to form hooks.
From the above description, it is clear that: the bent hook can reduce the contact area between the bottom steel plate and the E-shaped steel, thereby reducing the friction force generated during sliding.
Specifically, the beams of the two E-shaped steel 1 positioned at the uppermost part are arranged as telescopic expansion plate assemblies 5, and when the polymer modified asphalt joint compound 4 is poured, the top of the polymer modified asphalt joint compound 4 is level with the top of the expansion plate assemblies 5;
the expansion plate assembly 5 comprises a fixed outer plate 51, sliding cavities 52 are symmetrically formed in one ends, close to each other, of the two fixed outer plates 51, inner cavities of the sliding cavities 52 are connected with sliding inner plates 53 in a sealing sliding mode, and stop blocks 54 flush with the side edges of the fixed outer plates 51 are arranged on the side walls of one ends, close to each other, of the two sliding inner plates 53.
From the above description, it is clear that: through setting up fixed planking of mutual slip and slip inner panel for the bridge can drive the slip inner panel earlier and slide when the bridge produces expend with heat and contract with cold, thereby reduces extrusion force and the pulling force to polymer modified asphalt joint compound, and then reduces the polymer modified asphalt joint compound and produce arch, crackle and the possibility that drops, and set up the dog that is parallel and level mutually with fixed planking border and make polymer modified asphalt joint compound can not flow the region of fixed planking when pouring, thereby avoid the card dead between fixed planking and the slip inner panel.
Specifically, the two sliding inner plates 53 are recessed inwardly at their ends adjacent to each other to form a filling groove 55, and when the polymer modified asphalt joint compound 4 is poured, the polymer modified asphalt joint compound 4 is poured into the filling groove 55.
From the above description, it is clear that: the contact area between the polymer modified asphalt joint compound and the sliding inner plate can be increased by pouring the polymer modified asphalt joint compound into the filling groove, so that the binding force between the polymer modified asphalt joint compound and the sliding inner plate is improved, and the polymer modified asphalt joint compound and the sliding inner plate are prevented from falling and separating.
Specifically, the inner wall of the filling slot 55 is fixedly connected with a plurality of fixing rods 56 along the length direction, and the outer wall of the fixing rods 56 is fixedly connected with a plurality of fixing rings 57.
From the above description, it is clear that: the binding force between the polymer modified asphalt joint compound and the sliding inner plate can be further improved by arranging the fixing rods and the fixing rings.
Specifically, the outer wall of each fixing ring 57 is fixedly connected with a plurality of fixing blocks 58, and the fixing blocks 58 between each fixing ring 57 are arranged in a staggered manner.
From the above description, it is clear that: the fixing blocks arranged in a staggered manner can generate resistance to different positions of the polymer modified asphalt joint compound, so that the binding force is better, and the fixing blocks are arranged on the outer wall of the fixing ring, so that the polymer modified asphalt joint compound can have enough flowing space when flowing from outside to inside of the filling groove, and is more completely filled in the filling groove.
Specifically, the inner cavity of one side of the fixed outer plate 51 far away from the sliding inner plate 53 is provided with a placing cavity 59, a partition plate is arranged between the placing cavity 59 and the filling groove 55, one side of the sliding inner plate 53 far away from the polymer modified asphalt joint compound 4 is fixedly connected with an L-shaped connecting rod 510, the bending end of the L-shaped connecting rod 510 penetrates through the partition plate and is positioned in the placing cavity 59, a fixed shaft 511 is installed between two opposite side walls of the inner cavity of the placing cavity 59, the fixed shaft 511 penetrates through the bending end of the L-shaped connecting rod 510 and is in sliding connection with the L-shaped connecting rod 510, two limiting blocks 512 are fixedly connected with the outer walls of the two opposite ends of the fixed shaft 511, springs 513 are arranged between the two opposite side surfaces of the bending end of the L-shaped connecting rod 510 and the two limiting blocks 512, and the springs 513 are sleeved on the outer walls of the fixed shaft 511.
From the above description, it is clear that: through setting up L type connecting rod, fixed axle, stopper and spring for can drive L type connecting rod and slide at the slip in-process of slip inner panel, thereby improve L type connecting rod extrusion spring and make the spring produce deformation, and then play the cushioning effect, and also can provide certain sliding resistance through the spring, improve the stability between slip inner panel and the fixed planking.
Specifically, the fixed shaft 511 includes two first fixed shafts 5111 fixed on opposite side walls of the placement cavity 59 and a second fixed shaft 5112 detachably mounted between the two first fixed shafts 5111, wherein a thread groove is formed on an outer wall of one end of the first fixed shaft 5111, which is close to the second fixed shaft 5112, and on outer walls of two ends of the second fixed shaft 5112, and the limiting block 512 is in threaded connection with the first fixed shaft 5111 and the second fixed shaft 5112;
the bending part of the L-shaped connecting rod 510 is upwards arranged, and the top of the L-shaped connecting rod 510 is inwards recessed to form a sliding groove 5101 which is matched with the fixed shaft 511;
the bottom of the placing cavity 59 is fixedly connected with a plurality of bolt columns 514 along the length direction of the E-shaped steel 1, a cover plate 515 is arranged on the top of the E-shaped steel 1 corresponding to the placing cavity 59, and the cover plate 515 is detachably connected with the bolt columns 514 through bolts.
From the above description, it is clear that: when the spring is invalid and needs to be replaced, the cover plate can be opened, and then the two limiting blocks are separated from the two opposite ends of the second fixing shaft respectively through the rotating limiting blocks, so that the second fixing shaft is taken down along the top of the sliding groove and is locked and fixed again after a new spring is replaced, the quick replacement of the spring is realized, and the possibility of spring failure is avoided.
The second technical scheme provided by the invention is as follows:
the construction method of the cast-in-situ water stop device for bridge deformation comprises the following steps:
s1: e-shaped steel 1 with a baffle part 11, a U-shaped fixed steel bar 2 and a telescopic plate assembly 5 is prefabricated in a factory;
s2: e-shaped steel 1 is respectively arranged at two sides of the bridge expansion joint, and U-shaped fixed steel bars 2 on the side wall of the E-shaped steel 1 are fixed with bridge steel bars through welding;
s2: a bottom steel plate 3 is arranged between the two E-shaped steel 1, so that the bottom steel plate 3 spans between the two E-shaped steel 1;
s3: heating the polymer modified asphalt joint compound to 190 ℃, filling the heated polymer modified asphalt joint compound into a gap between E-shaped steel 1 at two sides by adopting a spray gun, filling the filling groove 55 of the expansion plate assembly 5 with the polymer modified asphalt joint compound, and pouring from a high place to a low place during pouring;
s4: and (3) naturally cooling the polymer modified asphalt joint compound to 70 ℃ to open traffic.
From the above description, it is clear that: the asphalt is poured from high to low, so that the gas generated in the pouring process can be completely discharged.
Referring to fig. 1 and 2, a first embodiment of the invention is as follows:
a cast-in-situ water stop device for bridge deformation comprises two E-shaped steel 1, wherein openings of the two E-shaped steel 1 are oppositely arranged, a plurality of U-shaped fixing steel bars 2 connected with bridge steel bars are fixedly connected on one side surface of the two E-shaped steel 1, which is far away from each other, along the length direction, a bottom steel plate 3 is arranged between middle cross beams of the two E-shaped steel 1, the top of the bottom steel plate 3 is abutted to the bottom of the cross beam positioned at the uppermost part of the E-shaped steel 1, and polymer modified asphalt joint compound 4 is poured between the top of the bottom steel plate 3 and the two E-shaped steel 1;
in the embodiment, the free end of the middle beam of the E-shaped steel 1 is bent upwards to form a baffle part 11, the bottom steel plate 3 is U-shaped steel, the opening of the U-shaped steel is arranged towards the middle beam of the E-shaped steel 1, and the two ends of the U-shaped bottom steel plate 3 are bent inwards to form hooks;
in the embodiment, the raw materials of the polymer modified asphalt joint compound 4 are as follows in mass percent: petroleum asphalt: 90 to 100 (preferably 95 parts); SBS:5 to 8 (preferably 7 parts); styrene Butadiene Rubber (SBR): 1 to 5 (preferably 3 parts); rosin resin: 1 to 10 (preferably 5 parts); mixture of sulfur and TOR: 2 to 6 (preferably 4 parts), and wherein sulfur is used in mass ratio: tor=4: 1.5; waterproof agent: 1 to 5 (preferably 3 parts); organic viscosity reducer: 1 to 5 (preferably 3 parts); the raw materials of the polymer modified asphalt joint compound 4 play the following roles:
1) Petroleum asphalt as main material; (2) Styrene-butadiene block polymer (SBS) is used as a modifier for improving three road performances of asphalt elasticity, high-temperature stability and low-temperature crack resistance, and can enhance the bonding capability of materials, thereby being beneficial to the interface bonding between the materials and bridge decks; (3) Styrene Butadiene Rubber (SBR) as a modifier; (4) The resin is a modifier, petroleum resin or rosin resin is selected, and mainly enhances the high-temperature stability and rutting resistance of the material; (5) The stabilizer is a mixture of sulfur and TOR rubber stabilizer, which can effectively reduce polymer segregation, the sulfur is generally used for preventing SBS polymer segregation, and the TOR is a rubber stabilizer and is mainly used for ensuring SBR stabilization; (6) The warm mixing agent is an organic viscosity reducer, and (7) the waterproofing agent improves the waterproof performance of the material.
The concrete construction process of the water stop device is as follows:
s1: e-shaped steel 1 with a baffle part 11 and U-shaped fixed steel bars 2 is prefabricated in a factory;
s2: e-shaped steel 1 is respectively arranged at two sides of the bridge expansion joint, and U-shaped fixed steel bars 2 on the side wall of the E-shaped steel 1 are fixed with bridge steel bars through welding;
s2: a bottom steel plate 3 is arranged between the two E-shaped steel 1 (the bottom steel plate 3 can be a thin steel plate sheet) so that the bottom steel plate 3 spans between the two E-shaped steel 1;
s3: heating the polymer modified asphalt joint compound to 190 ℃, filling the heated polymer modified asphalt joint compound into a gap between E-shaped steel 1 on two sides by adopting a spray gun, and pouring in a mode from high to low during pouring;
s4: and (3) naturally cooling the polymer modified asphalt joint compound to 70 ℃ to open traffic.
The polymer modified asphalt joint compound obtained by casting the bridge water stop device obtained by the construction can play a good role in waterproof, prevent bridge deck rain and sewage from penetrating into the upper structure of the bridge, play a good role in stopping water of the bridge, and prevent sundries such as bridge deck sand and the like from blocking gaps of the expansion joint device;
when the bridge expands with heat and contracts with cold, the polymer modified asphalt joint compound has strong adhesiveness with the steel plate and can recover deformation, so that the water stop device can well meet the deformation of the upper girder component caused by the change of external environment, the stress is fully released, and the safety and reliability of the structure are ensured;
meanwhile, the water stop device is convenient and fast to construct on site, large mechanical equipment is not needed, and normal road surface vehicle traffic can be recovered quickly, so that the existing bridge expansion joint function is replaced.
Referring to fig. 1-8, a second embodiment of the present invention is as follows:
the difference between this embodiment and the first embodiment is that:
the top beam of the E-shaped steel 1 is set to be a telescopic expansion plate assembly 5, the expansion plate assembly 5 comprises fixed outer plates 51, sliding cavities 52 are symmetrically formed at one ends, close to each other, of the two fixed outer plates 51, sliding inner plates 53 are connected in a sealing sliding manner in the inner cavities of the sliding cavities 52, stop blocks 54 flush with the side edges of the fixed outer plates 51 are arranged at the side edges of one ends, close to each other, of the two sliding inner plates 53 are inwards sunken to form a filling groove 55, a plurality of fixing rods 56 are fixedly connected to the inner walls of the filling groove 55 in the length direction, a plurality of fixing rings 57 are fixedly connected to the outer walls of the fixing rods 56, a plurality of fixing blocks 58 are fixedly connected to the outer walls of the fixing rings 57, the fixing blocks 58 between the fixing rings 57 are arranged in a staggered manner, and when the polymer modified asphalt joint filling material 4 is poured, the polymer modified asphalt joint filling material 4 is poured into the filling groove 55;
in the embodiment, a placing cavity 59 is formed in an inner cavity of one side of the fixed outer plate 51 far away from the sliding inner plate 53, a partition plate is arranged between the placing cavity 59 and the filling groove 55, an L-shaped connecting rod 510 is fixedly connected to one side of the sliding inner plate 53 far away from the polymer modified asphalt joint compound 4, the bending end of the L-shaped connecting rod 510 penetrates through the partition plate and is positioned in the placing cavity 59, a fixed shaft 511 is mounted between two opposite side walls of the inner cavity of the placing cavity 59, the fixed shaft 511 penetrates through the bending end of the L-shaped connecting rod 510 and is in sliding connection with the L-shaped connecting rod 510, limiting blocks 512 are fixedly connected to outer walls of two opposite ends of the fixed shaft 511, springs 513 are arranged between two opposite side surfaces of the bending end of the L-shaped connecting rod 510 and the two limiting blocks 512, and the springs 513 are sleeved on the outer walls of the fixed shaft 511;
in order to make the springs on the fixed shaft detachable and replaceable, the fixed shaft 511 includes two first fixed shafts 5111 fixed on opposite side walls of the placement cavity 59 and a second fixed shaft 5112 detachably mounted between the two first fixed shafts 5111, wherein a thread groove is formed on an outer wall of one end of the first fixed shaft 5111, which is close to the second fixed shaft 5112, and on outer walls of two ends of the second fixed shaft 5112, and the limiting block 512 is in threaded connection with the first fixed shaft 5111 and the second fixed shaft 5112;
the bending part of the L-shaped connecting rod 510 is upwards, the top of the L-shaped connecting rod 510 is inwards recessed to form a sliding groove 5101 which is matched with the fixed shaft 511, the sliding groove 5101 is formed by inwards recessing the top, so that the fixed shaft 511 is convenient to assemble and disassemble, and the two side walls of the L-shaped connecting rod 510 positioned in the sliding groove 5101 are propped against the end part of the spring 513;
the bottom of the placing cavity 59 is fixedly connected with a plurality of bolt columns 514 along the length direction of the E-shaped steel 1, a cover plate 515 is arranged on the top of the E-shaped steel 1 corresponding to the placing cavity 59, and the cover plate 515 is detachably connected with the bolt columns 514 through bolts.
The construction process of the water stop device is as follows:
s1: e-shaped steel 1 with a baffle part 11, a U-shaped fixed steel bar 2 and a telescopic plate assembly 5 is prefabricated in a factory; during prefabrication, the E-shaped steel 1 can be formed by welding a plurality of groups of steel plates, and a beam positioned at the top adopts a telescopic plate assembly 5, wherein a fixed outer plate 51 is welded at the top of the E-shaped steel 1 during welding of the telescopic plate assembly 5;
s2: e-shaped steel 1 is respectively arranged at two sides of the bridge expansion joint, and U-shaped fixed steel bars 2 on the side wall of the E-shaped steel 1 are fixed with bridge steel bars through welding;
s2: a bottom steel plate 3 is arranged between the two E-shaped steel 1, so that the bottom steel plate 3 spans between the two E-shaped steel 1;
s3: heating the polymer modified asphalt joint compound to 190 ℃, filling the heated polymer modified asphalt joint compound into a gap between E-shaped steel 1 at two sides by adopting a spray gun, filling the filling groove 55 of the expansion plate assembly 5 with the polymer modified asphalt joint compound, and pouring from a high place to a low place during pouring;
s4: and (3) naturally cooling the polymer modified asphalt joint compound to 70 ℃ to open traffic.
When the water stop device is constructed on site, the construction method is consistent with that of the first embodiment, the water stop device has the advantages of simple construction, no need of large mechanical equipment, quick construction and quick traffic restoration, and the prepared water stop device has the advantages of the first embodiment and the following advantages:
when the bridge member deforms due to expansion caused by heat and contraction caused by cold, the bridge pushes the fixed outer plates 51 on two sides to slide along the sliding inner plates 53 in the bridge deformation process, so that partial bridge expansion is counteracted by the relative sliding of the fixed outer plates and the sliding inner plates, the extrusion of the bridge to the polymer modified asphalt joint compound is reduced, and the deformation of the polymer modified asphalt joint compound caused by extrusion is reduced; and by the filling groove 55, the fixing rod 56 and the fixing ring 57 provided in the sliding inner plate 53, it is possible to further improve the adhesion between the polymer modified asphalt joint compound and the E-section steel 1, further avoiding the detachment of the polymer modified asphalt joint compound from the E-section steel.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "connected," "secured," "screwed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.
Although embodiments of the present invention have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.
Claims (6)
1. A cast-in-situ water stop device for bridge deformation, its characterized in that: the novel reinforced plastic bridge comprises two E-shaped steel (1), openings of the two E-shaped steel (1) are oppositely arranged, a plurality of U-shaped fixing steel bars (2) connected with bridge steel bars are fixedly connected to one side surface of the E-shaped steel (1) which is far away from each other along the length direction, a bottom steel plate (3) is placed between middle cross beams of the two E-shaped steel (1), the top of the bottom steel plate (3) is abutted to the bottom of the cross beam which is positioned at the uppermost part of the E-shaped steel (1), and polymer modified asphalt joint filling materials (4) are poured between the top of the bottom steel plate (3) and the two E-shaped steel (1);
the beams of the two E-shaped steel (1) positioned at the uppermost part are arranged to be telescopic expansion plate assemblies (5), and when the polymer modified asphalt joint filling material (4) is poured, the top of the polymer modified asphalt joint filling material (4) is flush with the top of the expansion plate assemblies (5);
the expansion plate assembly (5) comprises a fixed outer plate (51), sliding cavities (52) are symmetrically formed in one ends, close to each other, of the fixed outer plates (51), sliding inner plates (53) are connected to the inner cavities of the sliding cavities (52) in a sealing sliding mode, and stop blocks (54) which are flush with the side edges of the fixed outer plates (51) are arranged on the side edges of one ends, close to each other, of the two sliding inner plates (53);
one ends of the two sliding inner plates (53) close to each other are inwards recessed to form a filling groove (55), and when the polymer modified asphalt joint compound (4) is poured, the polymer modified asphalt joint compound (4) is poured into the filling groove (55);
a plurality of fixing rods (56) are fixedly connected to the inner wall of the filling groove (55) along the length direction, and a plurality of fixing rings (57) are fixedly connected to the outer wall of each fixing rod (56);
fixed planking (51) are kept away from one side inner chamber of slip inner panel (53) and are offered and place chamber (59), and place and be equipped with the baffle between chamber (59) and the filling groove (55), one side rigid coupling that polymer modified asphalt joint compound (4) was kept away from to slip inner panel (53) has L type connecting rod (510), the bending end of L type connecting rod (510) runs through the baffle and is located and place chamber (59), place and install fixed axle (511) between the relative both sides wall of chamber (59), and fixed axle (511) run through the bending end of L type connecting rod (510) and with L type connecting rod (510) sliding connection, fixed axle (511) both ends outer wall fixedly connected with stopper (512) relatively, all be provided with spring (513) between the opposite both sides face of the bending end of L type connecting rod (510) and two stopper (512), and spring (513) cover are established at fixed axle (511) outer wall.
2. A cast-in-place water stop for bridge deformation as defined in claim 1, wherein: the middle beam free end of the E-shaped steel (1) is bent upwards to form a baffle part (11), the bottom steel plate (3) is U-shaped steel, and the opening of the U-shaped steel faces the middle beam of the E-shaped steel (1).
3. A cast-in-place water stop for bridge deformation according to claim 2, wherein: both ends of the U-shaped bottom steel plate (3) are inwards bent to form hooks.
4. A cast-in-place water stop for bridge deformation as defined in claim 1, wherein: each outer wall of the fixing rings (57) is fixedly connected with a plurality of fixing blocks (58), and the fixing blocks (58) between each fixing rings (57) are arranged in a staggered mode.
5. A cast-in-place water stop for bridge deformation as defined in claim 1, wherein: the fixed shaft (511) comprises two first fixed shafts (5111) which are respectively fixed on two opposite side walls of the placing cavity (59) and a second fixed shaft (5112) which is detachably arranged between the two first fixed shafts (5111), a thread groove is formed in the outer wall of one end of the first fixed shaft (5111) close to the second fixed shaft (5112) and the outer walls of two ends of the second fixed shaft (5112), and the limiting block (512) is in threaded connection with the first fixed shaft (5111) and the second fixed shaft (5112);
the bending part of the L-shaped connecting rod (510) is upwards, and the top of the L-shaped connecting rod (510) is inwards recessed to form a sliding groove (5101) which is matched with the fixed shaft (511);
the bottom of the cavity (59) is fixedly connected with a plurality of bolt columns (514) along the length direction of the E-shaped steel (1), a cover plate (515) is arranged at the top of the E-shaped steel (1) and corresponds to the position of the cavity (59), and the cover plate (515) is detachably connected with the bolt columns (514) through bolts.
6. The construction method of the cast-in-situ water stop device for bridge deformation according to any one of claims 1 to 5, wherein: the construction method comprises the following steps:
s1: e-shaped steel (1) with a baffle part (11), U-shaped fixed steel bars (2) and a telescopic plate assembly (5) is prefabricated in a factory;
s2: e-shaped steel (1) is respectively arranged at two sides of the bridge expansion joint, and U-shaped fixed steel bars (2) on the side wall of the E-shaped steel (1) are fixed with the bridge steel bars through welding;
s3: a bottom steel plate (3) is arranged between the two E-shaped steel (1), and the bottom steel plate (3) spans between the two E-shaped steel (1);
s4: heating the polymer modified asphalt joint compound to 190 ℃, filling the heated polymer modified asphalt joint compound into a gap between E-shaped steel (1) at two sides by adopting a spray gun, filling the filling groove (55) of the expansion plate assembly (5) with the polymer modified asphalt joint compound, and pouring from high to low during pouring;
s5: and (3) naturally cooling the polymer modified asphalt joint compound to 70 ℃ to open traffic.
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| CN202311114000.XA CN116856272B (en) | 2023-08-31 | 2023-08-31 | Cast-in-situ water stop device for bridge deformation and construction method thereof |
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| CN202311114000.XA CN116856272B (en) | 2023-08-31 | 2023-08-31 | Cast-in-situ water stop device for bridge deformation and construction method thereof |
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| CN116856272B true CN116856272B (en) | 2023-11-17 |
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| CN116856272A (en) | 2023-10-10 |
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