CN111021240A - Waterproof structure and waterproof method for bridge expansion joint - Google Patents
Waterproof structure and waterproof method for bridge expansion joint Download PDFInfo
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- CN111021240A CN111021240A CN201911208230.6A CN201911208230A CN111021240A CN 111021240 A CN111021240 A CN 111021240A CN 201911208230 A CN201911208230 A CN 201911208230A CN 111021240 A CN111021240 A CN 111021240A
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 229920001971 elastomer Polymers 0.000 claims abstract description 88
- 239000000565 sealant Substances 0.000 claims abstract description 74
- 239000003292 glue Substances 0.000 claims abstract description 58
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 55
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 238000004873 anchoring Methods 0.000 claims description 43
- 238000007789 sealing Methods 0.000 claims description 18
- 238000001914 filtration Methods 0.000 claims description 9
- 239000012535 impurity Substances 0.000 claims description 7
- 238000004078 waterproofing Methods 0.000 claims description 7
- 229920001821 foam rubber Polymers 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 230000009471 action Effects 0.000 description 5
- 239000010426 asphalt Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 244000126211 Hericium coralloides Species 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 3
- 230000008602 contraction Effects 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000002730 additional effect Effects 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 239000004587 polysulfide sealant Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000004588 polyurethane sealant Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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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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- Engineering & Computer Science (AREA)
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
- Road Paving Structures (AREA)
Abstract
The invention relates to a waterproof structure of a bridge expansion joint and a waterproof method of the bridge expansion joint. The waterproof structure of the bridge expansion joint comprises a water stop, wherein the water stop is arranged in the bridge expansion joint to form a water chute extending along the width direction of the bridge; an elastic rubber mold and elastic sealant are arranged in the bridge expansion joint, and the elastic rubber mold and the elastic sealant are sequentially arranged above the water stop belt; the elastic rubber mold is clamped in the bridge expansion joint and forms a rubber filling groove for filling rubber liquid together with the seam walls on two sides of the bridge expansion joint; and the elastic sealant is formed by curing the glue solution filled in the glue filling groove and is used for isolating the space above the elastic sealant from the water stop belt below the elastic sealant. The waterproof method of the corresponding bridge expansion joint is to fill glue solution into the glue filling groove, the glue solution is cured to form elastic sealant, and the elastic sealant is used for isolating the upper space from the lower water stop. Above-mentioned scheme can solve the waterproof problem of becoming invalid easily of current bridge telescoping device department.
Description
Technical Field
The invention relates to a waterproof structure of a bridge expansion joint and a waterproof method of the bridge expansion joint.
Background
The bridge expansion joint is an interval arranged between the ends of two bridge decks, between the end beam ends of the bridge decks and the abutment or at the hinge joint position of the bridge, and aims to adapt to expansion with heat and contraction with cold between the bridge decks or between the bridge decks and the abutment and meet the deformation requirement of the bridge deck. The bridge expansion joint can freely expand and contract in two directions parallel to and perpendicular to the axis of the bridge, and a bridge expansion device is further arranged to realize connection of the bridge deck. The water stop is arranged below the bridge expansion device, is a waterproof structure of the bridge expansion joint, is generally formed by a groove-shaped sealing rubber belt, extends along the width direction of the bridge, and is used for leading water to two sides of the width direction of the bridge and discharging the water.
One widely used bridge expansion device among the prior art is comb shape plate type expansion device, also called comb tooth type bridge expansion device, like the one that chinese patent application publication number is CN102102339A discloses a multidirectional comb shape plate expansion device that shifts of prestressing force formula, including first pinion rack and second pinion rack, first pinion rack and second pinion rack closing cap are in bridge expansion joint department to fix the bolt that sets up on the anchor base through the nut respectively. The waterstop is arranged below the first toothed plate and the second toothed plate, and the edges of two sides of the waterstop are fixed between the two bridge plates or between the bridge plates and the bridge abutment.
However, because the gap has between bridge telescoping device's the fishback, the condition that debris, earth infiltration waterstop inevitably can appear in the use, causes the waterstop to block up easily, produces ponding, probably leads to the waterstop to drop under the action of gravity of ponding, leads to waterproof inefficacy.
Chinese patent No. CN209194326U discloses an assembled multidirectional displacement bridge expansion device, wherein a second toothed plate and a first toothed plate are fixed on corresponding embedded sleeves by bolts. Similarly, the above-mentioned waterproof problem also exists with the manner of installing the water stop (i.e., the U-shaped water tank in the above-mentioned multi-directional displacement bridge expansion device).
Disclosure of Invention
The invention aims to provide a waterproof structure of a bridge expansion joint, which solves the problem that the existing bridge expansion device is easy to lose efficacy in waterproof; meanwhile, the invention also aims to provide a waterproof method for the bridge expansion joint, which solves the problem that the existing waterproof method for the bridge expansion joint is easy to lose efficacy.
The waterproof structure of the bridge expansion joint adopts the following technical scheme:
the waterproof structure of the bridge expansion joint comprises a first bridge body and a second bridge body, wherein the bridge expansion joint is arranged between the first bridge body and the second bridge body;
the waterproof structure further comprises a water stop belt, and the water stop belt is arranged in the bridge expansion joint to form a water chute extending along the width direction of the bridge;
an elastic rubber mold and elastic sealant are arranged in the bridge expansion joint, and the elastic rubber mold and the elastic sealant are sequentially arranged above the water stop belt;
the elastic rubber mold is clamped in the bridge expansion joint and forms a rubber filling groove for filling rubber liquid together with the seam walls on two sides of the bridge expansion joint;
and the elastic sealant is formed by curing the glue solution filled in the glue filling groove and is used for isolating the space above the elastic sealant from the water stop belt below the elastic sealant.
The technical scheme has the beneficial effects that: the elastic rubber mold clamped in the bridge expansion joint can adapt to the change of the distance between the first bridge body and the second bridge body by means of self elasticity, and meanwhile can jointly enclose a glue filling groove for filling glue liquid with the seam walls on two sides of the bridge expansion joint, the glue liquid is filled in the glue filling groove and can form elastic sealant after being cured. Meanwhile, even if the elastic sealant is damaged, the elastic sealant still can play a certain filtering role, and impurities are prevented from entering the water stop belt to cause the water stop belt to be blocked.
As a preferred technical solution, the elastic rubber mold is of a sponge structure and is used for filtering impurities in water flowing downwards through the elastic rubber mold.
The technical scheme has the beneficial effects that: through the elastic rubber mold of the sponge structure, the waterproof failure can be better avoided.
As a preferred technical scheme, the elastic rubber mold is a rubber foaming sponge strip.
The technical scheme has the beneficial effects that: the elastic rubber mold is a rubber foaming sponge strip, is convenient to manufacture, can form a sponge structure, and is waterproof and reliable.
As a preferable technical solution, the thickness of both sides of the elastic rubber mold in the width direction is smaller than the thickness of the middle of the elastic rubber mold in the width direction.
The technical scheme has the beneficial effects that: by adopting the structure, the two sides of the width direction of the elastic sealing glue can have thicker thickness, so that the elastic sealing glue can be firmly bonded with the seam walls on the two sides of the bridge expansion joint, the sealing performance and the structural strength are improved, the middle thickness of the elastic sealing glue can have thinner thickness, and the elastic sealing glue is favorable for structural deformation and better adapts to the expansion and contraction of the bridge expansion joint.
As a preferable technical scheme, one end of the first bridge body, which is close to the second bridge body, is provided with a bridge body step, two sides of the waterstop in the width direction are provided with horizontal flanges, and the horizontal flanges are supported on the bridge body step; the bottom surface of the elastic rubber mold is supported on the horizontal flanging of the water stop belt.
The technical scheme has the beneficial effects that: the water stop belt is supported by the horizontal flanging, the structure is simple, the installation is convenient, the bottom surface of the elastic rubber mold can play a role in sealing on the horizontal flanging of the water stop belt, so that water is better prevented from leaking to the lower part of the water stop belt, and the waterproof performance is improved.
As a preferred technical scheme, the first bridge body and the second bridge body are respectively provided with an anchoring base, and each anchoring base comprises a toothed plate supporting plate and a vertical plate;
the toothed plate supporting plate extends along the horizontal direction and is used for supporting a comb plate of the bridge expansion device;
the vertical plate and the toothed plate supporting plate are arranged in an L shape, and the top of the seam wall of the bridge expansion joint is formed by the vertical plate;
the elastic rubber mold and the elastic sealant are arranged between the vertical plates of the two anchoring bases.
The technical scheme has the beneficial effects that: the elastic rubber mold and the elastic sealing glue are arranged between the vertical plates of the two anchoring bases, the surfaces of the vertical plates can be made to be more smooth and clean, and the elastic sealing glue can be better combined with the vertical plates, so that the sealing performance is better guaranteed.
As a preferred technical scheme, the top surface of the elastic rubber mold is of a corrugated structure, and the wave shape of the corrugated structure extends along the width direction of the bridge expansion joint;
the corrugated structure is provided with a trough and two wave crests, the trough is positioned in the middle of the bridge expansion joint in the width direction, and the wave crests are positioned between the joint wall of the bridge expansion joint and the trough, and the top surface of the elastic sealant is flush with the toothed plate supporting plate;
the bottom surface of the elastic sealant is of a corrugated structure and is matched with the top surface of the elastic rubber mold in shape, and the part, located between two wave crests of the corrugated structure, of the top surface of the elastic sealant is parallel to the bottom surface of the elastic sealant.
The technical scheme has the beneficial effects that: adopt above-mentioned structure, the sealed glue of elasticity is receiving the extrusion back along the width direction at bridge expansion joint, and the mid portion can be bending deformation downwards, is favorable to structural deformation, can adapt to the flexible at bridge expansion joint better, and in addition, the sealed elastic glue mould of gluing the lower floor of glue can provide the deformation space for the sealed glue of elasticity to can play the additional action to the restoration after the sealed structural seal layer that the glue formed of elasticity warp, realize waterproofly better.
The waterproof method for the bridge expansion joint adopts the following technical scheme:
a method of waterproofing a bridge expansion joint, the method comprising the steps of:
step one, arranging an elastic rubber mold at a position above a water stop belt in a bridge expansion joint, wherein the elastic rubber mold and the seam walls on two sides of the bridge expansion joint jointly form a glue pouring groove for pouring glue;
and step two, pouring glue solution into the glue pouring groove, wherein the glue solution is solidified to form elastic sealant which is used for isolating the upper space from the lower water stop.
The technical scheme has the beneficial effects that: the elastic rubber mold clamped in the bridge expansion joint can adapt to the change of the distance between the first bridge body and the second bridge body by means of self elasticity, and meanwhile can jointly enclose a glue filling groove for filling glue liquid with the seam walls on two sides of the bridge expansion joint, the glue liquid is filled in the glue filling groove and can form elastic sealant after being cured. Meanwhile, even if the elastic sealant is damaged, the elastic sealant still can play a certain filtering role, and impurities are prevented from entering the water stop belt to cause the water stop belt to be blocked.
As a preferred technical scheme, the elastic rubber mold adopts a sponge structure and is used for filtering impurities in water flowing downwards through the elastic rubber mold.
The technical scheme has the beneficial effects that: through the elastic rubber mold of the sponge structure, the waterproof failure can be better avoided.
As a preferred technical scheme, the first bridge body and the second bridge body are respectively provided with an anchoring base, and each anchoring base comprises a toothed plate supporting plate and a vertical plate;
the toothed plate supporting plate extends along the horizontal direction and is used for supporting a comb plate of the bridge expansion device;
the vertical plate and the toothed plate supporting plate are arranged in an L shape, and the top of the seam wall of the bridge expansion joint is formed by the vertical plate;
the elastic rubber mold and the elastic sealing rubber are arranged between the vertical plates of the two anchoring bases.
The technical scheme has the beneficial effects that: the elastic rubber mold and the elastic sealing glue are arranged between the vertical plates of the two anchoring bases, the surfaces of the vertical plates can be made to be more smooth and clean, and the elastic sealing glue can be better combined with the vertical plates, so that the sealing performance is better guaranteed.
The above-described preferred embodiments may be adopted alone, or two or more embodiments may be arbitrarily combined when they can be combined, and the embodiments formed by the combination are not specifically described here and are included in the description of the present patent.
Drawings
Fig. 1 is a schematic view illustrating a use state of a waterproof structure for a bridge expansion joint according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of FIG. 1, the cross-section being perpendicular to the direction of extension of the bridge expansion joint;
FIG. 3 is a top view of FIG. 2;
FIG. 4 is a right side view of FIG. 2, with portions of the pontic hidden;
FIG. 5 is a schematic view of the structure of FIG. 1 with the bridge removed;
FIG. 6 is a side view of FIG. 5 as viewed in the direction of extension of the bridge expansion joint;
fig. 7 is a schematic view of a waterproof structure of a bridge expansion joint according to an embodiment 2 of the present invention in a use state;
fig. 8 is a cross-sectional view of fig. 7, the cross-section being perpendicular to the direction of extension of the bridge expansion joint.
The names of the components corresponding to the corresponding reference numerals in the drawings are: 1-a first bridge; 2-a second pontic; 3-an asphalt pavement layer; 4-a first anchoring base; 41-first toothed plate support plate; 42-a first vertical plate, 43-a first L-shaped clamping body, 44-a toothed plate clamping groove; 5-a second anchoring base; 51-second toothed plate support plate; 52-a second vertical plate, 53-a second L-shaped clamping body; 6-a first bolt; 7-anchor bolt sleeve; 8-long anchoring steel bars; 9-short anchoring steel bars; 10-an elastic sealant; 11-elastic rubber mold; 12-water stop belt; 13-a first toothed plate; 131-clamping step; 14-a second bolt; 15-a second toothed plate; 16-anchoring holes, 17-anchor bolt sleeve fixing holes; 18-bridge expansion joints; 19-bridge step.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" when they are used are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.
In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the term "provided" may be used in a broad sense, for example, the object of "provided" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be a detachable connection or a non-detachable connection. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.
The features and properties of the present invention are described in further detail below with reference to examples.
As shown in fig. 1 to 6, an embodiment 1 of the waterproof structure for a bridge expansion joint according to the present invention is configured to be installed at a bridge expansion joint 18 formed by a first bridge body 1 and a second bridge body 2, and as shown in fig. 1, 2, 5, and 6, the waterproof structure includes a water stop 12, an elastic rubber mold 11, and an elastic sealant 10, and the elastic rubber mold 11 and the elastic sealant 10 are sequentially installed above the water stop 12. In this embodiment, the first bridge body 1 is a bridge deck, and the second bridge body 2 is a bridge abutment, specifically, a concrete back wall on the bridge abutment.
One end that first pontic 1 and second pontic 2 are close to each other is equipped with pontic step 19, and pontic step 19 has horizontal step wall up, the width direction both sides of waterstop 12 are equipped with horizontal turn-ups, horizontal turn-ups supports on the horizontal step wall of pontic step 19.
The elastic rubber mold 11 is made of a rubber foam sponge strip, is of a sponge structure, and is used for filtering impurities in water flowing downwards through the elastic rubber mold 11. The elastic rubber mold 11 is clamped in the bridge expansion joint 18 and forms a rubber filling groove for filling rubber liquid together with the seam walls on two sides of the bridge expansion joint 18. In this embodiment, the seam wall on bridge expansion joint 18 both sides is related with the bridge telescoping device, and the bridge telescoping device includes fishback and anchor base, and the fishback includes first pinion rack 13, second pinion rack 15, correspondingly, and the anchor base includes first anchor base 4 and second anchor base 5, and first pinion rack 13 and second pinion rack 15 are used for fixing respectively to first anchor base 4 and second anchor base 5. As shown in fig. 1 and 2, a first anchoring base 4 and a second anchoring base 5 are intended to be fixed to the first bridge body 1 and the second bridge body 2, respectively. Specifically, taking the first anchoring base 4 as an example, the first anchoring base includes a first toothed plate supporting plate 41, a first L-shaped clamping body 43 is arranged on the rear side edge of the first toothed plate supporting plate 41, and a first vertical plate 42 is arranged on the front side edge. The first toothed plate support plate 41, the first L-shaped clamping body 43 and the first vertical plate 42 are integrally formed. The first vertical plate 42 is arranged in an L-shape with the first toothed plate support plate 41, and the top of the corresponding side slot wall of the bridge expansion joint 18 is formed by the first vertical plate 42. The bottom surface of the elastic rubber mold 11 is a plane and is supported on a horizontal flanging of the water stop belt 12; the top surface of the elastic rubber mold 11 is arc-shaped, so that the thicknesses of two sides of the elastic rubber mold 11 in the width direction are smaller than the thickness of the middle of the elastic rubber mold in the width direction.
And the elastic sealant 10 is formed by solidifying glue liquid poured into the glue pouring groove and is used for isolating the upper space from the lower water stop 12. In this example, the glue solution is a two-component polyurethane. The elastic sealant is a composite material consisting of liquid high molecular material, filler, plasticizer and other components, and is a material which forms an elastomer through a curing reaction under the action of a curing agent or air and water; the elastic sealant has two functions of bonding and sealing, and the currently commonly used elastic sealants include polyurethane sealant (divided into single-component sealant and double-component sealant), polysulfide sealant, organosilicon sealant and MS sealant. The bottom surface of the elastic sealant 10 is an arc shape with a matched shape, corresponding to the structure of the elastic rubber mold 11. The top surface of the elastic sealant 10 is flush with the toothed plate support plate.
Thus, the elastic sealant 10, the elastic rubber mold 11 and the water stop 12 can form a triple waterproof structure, so that the waterproof performance of the bridge expansion joint 18 is better ensured.
The first toothed plate 13 and the second toothed plate 15 are arranged along the length direction of the bridge expansion joint 18 (namely the width direction of the bridge), so that a plurality of modules are formed, and a proper number of modules can be arranged according to the width of the bridge floor during use. The front end of each comb plate is provided with a tooth-shaped structure, and the rear end is provided with an anchoring hole 16. It should be noted that, the terms "front" and "rear" refer to the comb plates, and one end of each comb plate provided with the tooth-shaped structure is a front end, and the other end is a rear end; in addition, for the sake of clarity of the description of the invention, the first anchoring base 4 and the second anchoring base 5 herein have a front-to-rear direction coinciding with the respective comb plates. Correspondingly, the toothed plate supporting plate is provided with anchor bolt sleeve fixing holes 17, the top of the corresponding anchor bolt sleeve 7 is embedded into the anchor bolt sleeve fixing holes 17 and is welded and fixed with the toothed plate supporting plate, and threaded holes are formed in the anchor bolt sleeve 7 along the axis. In this embodiment, the length of the first toothed plate 13 is greater than that of the second toothed plate 15, and the first toothed plate 13 can span the bridge expansion joint 18.
As shown in fig. 2, 4 and 5, in order to fix the first anchoring base, the first anchoring base 4 is connected with a long anchoring steel bar 8 and a short anchoring steel bar 9, the long anchoring steel bar 8 and the short anchoring steel bar 9 are both U-shaped with the opening facing downwards, and the long anchoring steel bar 8 and the short anchoring steel bar 9 are welded into a whole, and are welded and fixed with the first toothed plate support plate 41 and the first vertical plate 42, and fixed into a whole with the first bridge body 1 through concrete pouring. As shown in fig. 4, 5 and 6, the long anchoring bar 8 passes through the middle of the four anchor bushes 7 and is connected to the first vertical plate 42; the top surface of the short anchor reinforcing steel bars 9 protruding the long anchor reinforcing steel bars 8 can reinforce the asphalt pavement layer 3, and meanwhile, the short anchor reinforcing steel bars 9 are connected with the rear side edge of the first toothed plate supporting plate 41, so that the overall structural strength is favorably improved.
The first tooth plate support plate 41 is horizontally arranged for supporting the first tooth plate 13 of the corresponding side; a toothed plate clamping groove 44 is formed by the first L-shaped clamping body 43 and the first toothed plate supporting plate 41 in a surrounding mode at the rear of the anchoring connecting body; the notch of pinion rack draw-in groove 44 is towards the place ahead, and the vallecular cavity of pinion rack draw-in groove 44 forms the joint space, and the joint space supplies the back tip card of corresponding side fishback to go into, and the top cell wall of pinion rack draw-in groove 44 forms and is used for carrying out spacing vertical limit structure along vertical direction to fishback's back tip. Correspondingly, the rear end of the first toothed plate 13 is provided with a clamping step 131, and the clamping step 131 forms a clamping part; the thickness of the clamping part is smaller than the front side part of the comb plate and is used for being clamped into the clamping space, and the width of the clamping part is larger than the depth of the clamping space. Meanwhile, the first L-shaped clamping body 43 is higher than the first toothed plate support plate 41, so that a paving boundary of the asphalt paving layer 3 is formed, and asphalt is conveniently paved.
As shown in fig. 2 and 6, the second anchoring base 5 has a structure similar to the first anchoring base 4, and includes a second rack support plate 51, a second vertical plate 52, and a second L-shaped snap-in body 53, only the sizes of some parts of which are different.
Through the first anchoring base 4 and the second anchoring base 5 of the above structure, the first toothed plate 13 and the second toothed plate 15 can be completely separated from the concrete. During the assembly, can be directly go into the back tip card of first pinion rack 13 and second pinion rack 15 in pinion rack draw-in groove 44, then use first bolt 6 and second bolt 14 to pass anchor hole 16 on first pinion rack backup pad 41 and the second pinion rack backup pad 51 respectively, threaded connection is fixed to crab-bolt cover 7 on, easy dismounting.
Meanwhile, the top groove wall of the tooth plate clamping groove 44 forms a vertical limiting structure used for limiting the rear end part of the comb plate along the vertical direction, and can assist in bearing the stress of the comb plate. Of course, the closer the width of the tooth plate clamping groove 44 is to the thickness of the clamping step 131 of the comb plate, the smaller the gap between the two is, so as to better share the stress of the first bolt 6 and the second bolt 14. However, since the tooth plate catching groove 44 has a certain depth, a vertical gap between the tooth plate catching groove 44 and the catching step 131 may be appropriately increased in consideration of the convenience of assembly. In addition, when the first tooth plate 13 and the second tooth plate 15 are disassembled, the first tooth plate 13 and the second tooth plate 15 can slide into the tooth plate clamping grooves 44 in the horizontal direction by using the front-back distance existing between the tooth-shaped parts of the first tooth plate 13 and the second tooth plate 15.
The fore-and-aft direction size of the anchoring base corresponding to the second toothed plate 15 is larger than the fore-and-aft direction size of the second toothed plate 15, the tooth profile structure of the first toothed plate 13 is used for supporting the anchoring base corresponding to the second toothed plate 15, a simply supported comb tooth telescopic device is formed, the simply supported comb tooth telescopic device can better reduce the stress of the first bolt 6, and the structural reliability is further ensured.
When the bridge is built, the waterproof of the bridge expansion joint 18 is realized according to the following method: after the first anchoring base 4 and the second anchoring base 5 are respectively fixed on the first bridge body 1 and the second bridge body 2, an upper stop water belt 12 is placed on a bridge step at a bridge expansion joint 18, and then an elastic rubber mold 11 is pressed, so that the elastic rubber mold 11 is clamped in the bridge expansion joint 18 and forms a glue filling groove for filling glue together with the seam walls at two sides of the bridge expansion joint 18; and finally, pouring glue solution into the glue pouring groove, wherein the glue solution is solidified to form elastic sealant 10, and the elastic sealant 10 is used for isolating the upper space from the lower water stop 12. The above method is also embodiment 1 of the method for waterproofing a bridge expansion joint according to the present invention.
Embodiment 2 of the waterproof structure of a bridge expansion joint of the present invention: the difference between this embodiment and embodiment 1 is that, in this embodiment, as shown in fig. 7 and fig. 8, the top surface of the elastic rubber mold 11 is a corrugated structure, which is substantially a sine wave in this embodiment, the waveform of the corrugated structure extends along the width direction of the bridge expansion joint 18, the corrugated structure has one trough and two peaks, the trough is located in the middle of the bridge expansion joint in the width direction, and the peak is located between the wall of the bridge expansion joint and the trough; correspondingly, the bottom surface of the elastic sealant 10 is matched with the top surface of the elastic rubber mold in shape and is also of a corrugated structure, in the forming process of the elastic sealant 10, an auxiliary forming mold is arranged on the top surface of the elastic sealant 10 and is arranged in a manner of being aligned with the bridge expansion joint 18, the shape of the middle part of the bottom surface of the auxiliary forming mold is the same as that of the middle part of the top surface of the elastic rubber mold 11 and is used for forming the middle part of the top surface of the elastic sealant 10, and the part, located between two wave crests of the corrugated structure, of the top surface of the elastic sealant 10 is parallel to the bottom surface; after the glue solution poured into the glue pouring groove is solidified, the auxiliary forming die is removed, so that the elastic sealant 10 is of a corrugated structure as a whole.
Like this, sealed glue 10 of elasticity receives the extrusion back along bridge expansion joint 18's width direction, and the mid portion can the bending deformation downwards, is favorable to the structural deformation, can adapt to the flexible of bridge expansion joint better, avoids upwards warping and produces the friction with the fishback.
In addition, in the embodiment, the top surfaces of the parts of the elastic sealant 10 along the two sides of the bridge expansion joint 18 in the width direction are planes, so that the two sides of the elastic sealant 10 in the width direction can have thicker thickness, and the elastic sealant can be firmly bonded with the wall of the bridge expansion joint, so that the sealing performance and the structural strength are improved; meanwhile, the elastic rubber mold 11 on the lower layer of the elastic sealant 10 can provide a deformation space for the elastic sealant 10, and can assist in the restoration of the deformed structural sealing layer formed by the elastic sealant 10.
In other embodiments, the corrugated structure may have other waveforms, such as isosceles triangle wave, isosceles trapezoid wave, etc.; in the case of a larger width of the bridge expansion joint 18, the corrugated structure may have more troughs and more crests.
Correspondingly, in embodiment 2 of the method for waterproofing a bridge expansion joint of the present invention, the difference between the present embodiment and embodiment 1 is that in the present embodiment, the top surface of the elastic rubber mold 11 is of the above-mentioned corrugated structure; meanwhile, when the elastic sealant 10 is formed, an auxiliary forming die is arranged at the top of the elastic sealant die 11, and the auxiliary forming die and the elastic sealant 10 are vertically spaced and are arranged in a centering way with the bridge expansion joint 18; the shape of the middle part of the bottom surface of the auxiliary forming die is the same as that of the middle part of the top surface of the elastic rubber die 11 and is used for forming the middle part of the top surface of the elastic sealant 10; after the glue solution poured into the glue pouring groove is solidified, the auxiliary forming die is removed, so that the elastic sealant 10 is integrally corrugated.
In embodiment 3 of the waterproof structure for a bridge expansion joint of the present invention, the difference between this embodiment and embodiment 1 is that, in this embodiment, the section of the elastic rubber mold 11 is a rectangular structure, and the top surface and the bottom surface are both flat surfaces; correspondingly, the bottom surface of the elastomeric sealant 10 is also planar.
The difference between the embodiment 4 of the waterproof structure for a bridge expansion joint and the embodiment 1 is that in this embodiment, the water stop 12 is disposed below the step 19 of the bridge body and fixed on the seam wall below the step 19 of the bridge body, and the elastic rubber mold 11 is directly supported on the step 19 of the bridge body.
In embodiment 5 of the waterproof structure for a bridge expansion joint of the present invention, the difference between this embodiment and embodiment 1 is that, in this embodiment, a space is provided between the top surface of the elastic sealant 10 and the comb plate. Set up the interval and can avoid the glue solution too much to lead to influencing the flexible of pinion rack backup pad, of course, the sealed top surface of gluing 10 of elasticity and the interval between the fishback is the better for the reduction ponding.
In embodiment 6 of the waterproof structure for a bridge expansion joint of the present invention, the difference between this embodiment and embodiment 1 is that in this embodiment, the joint wall of the bridge expansion joint 18 is completely formed by the end surfaces of the first bridge body 1 and the second bridge body 2, the top surface of the elastic sealant 11 and the end surfaces of the first bridge body 1 and the second bridge body 2 enclose a sealant filling groove, and both sides of the elastic sealant 10 in the horizontal direction are combined with the end surfaces of the first bridge body 1 and the second bridge body 2.
Correspondingly, in embodiment 3 of the method for waterproofing a bridge expansion joint according to the present invention, the difference between this embodiment and embodiment 1 is that in this embodiment, the joint wall of the bridge expansion joint 18 is completely formed by the end surfaces of the first bridge body 1 and the second bridge body 2, the top surface of the elastic glue mold 11 and the end surfaces of the first bridge body 1 and the second bridge body 2 define a glue filling groove, the glue filling groove is defined by the end surfaces of the first bridge body 1 and the second bridge body 2, and both sides of the elastic glue 10 in the horizontal direction are combined with the end surfaces of the first bridge body 1 and the second bridge body 2.
In embodiment 7 of the waterproof structure for a bridge expansion joint of the present invention, the difference between this embodiment and embodiment 1 is that, in this embodiment, the elastic rubber mold 11 is made of solid rubber, and can be elastically clamped in the bridge expansion joint 18 to adapt to the space required for expansion and contraction of the bridge expansion joint, but after the elastic sealant 10 is damaged, water can flow into the water stop 12 along the joint surface between the bridge expansion joint 18 and the elastic rubber mold 11, and the elastic rubber mold 11 does not have a filtering function at this time.
Correspondingly, in embodiment 4 of the method for waterproofing a bridge expansion joint according to the present invention, the difference between this embodiment and embodiment 1 is that the elastic rubber mold 11 is made of solid rubber, and can be elastically clamped in the bridge expansion joint 18, after the elastic sealant 10 is damaged, water can flow into the water stop 12 along the joint surface between the bridge expansion joint 18 and the elastic rubber mold 11, and the elastic rubber mold 11 does not have a filtering function at this time.
The above description is only a preferred embodiment of the present application, and not intended to limit the present application, the scope of the present application is defined by the appended claims, and all changes in equivalent structure made by using the contents of the specification and the drawings of the present application should be considered as being included in the scope of the present application.
Claims (10)
1. The waterproof structure of the bridge expansion joint comprises a first bridge body and a second bridge body, wherein the bridge expansion joint is arranged between the first bridge body and the second bridge body;
the waterproof structure further comprises a water stop belt, and the water stop belt is arranged in the bridge expansion joint to form a water chute extending along the width direction of the bridge;
the method is characterized in that:
an elastic rubber mold and elastic sealant are arranged in the bridge expansion joint, and the elastic rubber mold and the elastic sealant are sequentially arranged above the water stop belt;
the elastic rubber mold is clamped in the bridge expansion joint and forms a rubber filling groove for filling rubber liquid together with the seam walls on two sides of the bridge expansion joint;
and the elastic sealant is formed by curing the glue solution filled in the glue filling groove and is used for isolating the space above the elastic sealant from the water stop belt below the elastic sealant.
2. The waterproof structure for a bridge expansion joint as claimed in claim 1, wherein the elastic rubber mold is a sponge structure for filtering impurities in water flowing downward through the elastic rubber mold.
3. The waterproof structure for a bridge expansion joint according to claim 2, wherein said elastic rubber mold is a rubber foam sponge strip.
4. The waterproof structure for a bridge expansion joint according to any one of claims 1 to 3, wherein the thickness of the elastic rubber mold is smaller at both sides in the width direction than at the middle in the width direction.
5. The waterproof structure for a bridge expansion joint according to any one of claims 1 to 3, wherein a bridge step is provided at one end of the first bridge and the second bridge adjacent to each other, horizontal flanges are provided at both sides of the water stop in the width direction, and the horizontal flanges are supported on the bridge step; the bottom surface of the elastic rubber mold is supported on the horizontal flanging of the water stop belt.
6. The waterproof structure for a bridge expansion joint according to any one of claims 1 to 3, wherein the first bridge body and the second bridge body are respectively provided with an anchoring base, each anchoring base comprises a toothed plate support plate and a vertical plate;
the toothed plate supporting plate extends along the horizontal direction and is used for supporting a comb plate of the bridge expansion device;
the vertical plate and the toothed plate supporting plate are arranged in an L shape, and the top of the seam wall of the bridge expansion joint is formed by the vertical plate;
the elastic rubber mold and the elastic sealant are arranged between the vertical plates of the two anchoring bases.
7. The waterproof structure for a bridge expansion joint according to any one of claims 1 to 3, wherein the top surface of the elastic rubber mold is of a corrugated structure, and the wave shape of the corrugated structure extends in the width direction of the bridge expansion joint;
the corrugated structure is provided with a trough and two wave crests, the trough is positioned in the middle of the bridge expansion joint in the width direction, and the wave crest is positioned between the joint wall of the bridge expansion joint and the trough;
the bottom surface of the elastic sealant is of a corrugated structure and is matched with the top surface of the elastic rubber mold in shape, and the part, located between two wave crests of the corrugated structure, of the top surface of the elastic sealant is parallel to the bottom surface of the elastic sealant.
8. The waterproof method for the bridge expansion joint is characterized by comprising the following steps of:
step one, arranging an elastic rubber mold at a position above a water stop belt in a bridge expansion joint, wherein the elastic rubber mold and the seam walls on two sides of the bridge expansion joint jointly form a glue pouring groove for pouring glue;
and step two, pouring glue solution into the glue pouring groove, wherein the glue solution is solidified to form elastic sealant which is used for isolating the upper space from the lower water stop.
9. The method for waterproofing a bridge expansion joint according to claim 8, wherein said elastic rubber mold is of a sponge structure for filtering impurities in water flowing down through the elastic rubber mold.
10. The method for waterproofing a bridge expansion joint according to claim 8 or 9, wherein the first bridge body and the second bridge body are respectively provided with an anchoring base, each of which comprises a toothed plate support plate and a vertical plate;
the toothed plate supporting plate extends along the horizontal direction and is used for supporting a comb plate of the bridge expansion device;
the vertical plate and the toothed plate supporting plate are arranged in an L shape, and the top of the seam wall of the bridge expansion joint is formed by the vertical plate;
the elastic rubber mold and the elastic sealing rubber are arranged between the vertical plates of the two anchoring bases.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911208230.6A CN111021240A (en) | 2019-11-30 | 2019-11-30 | Waterproof structure and waterproof method for bridge expansion joint |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911208230.6A CN111021240A (en) | 2019-11-30 | 2019-11-30 | Waterproof structure and waterproof method for bridge expansion joint |
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| CN111021240A true CN111021240A (en) | 2020-04-17 |
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| CN201911208230.6A Pending CN111021240A (en) | 2019-11-30 | 2019-11-30 | Waterproof structure and waterproof method for bridge expansion joint |
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