CN108487057B - Plough nozzle type gasket - Google Patents
Plough nozzle type gasket Download PDFInfo
- Publication number
- CN108487057B CN108487057B CN201810497399.7A CN201810497399A CN108487057B CN 108487057 B CN108487057 B CN 108487057B CN 201810497399 A CN201810497399 A CN 201810497399A CN 108487057 B CN108487057 B CN 108487057B
- Authority
- CN
- China
- Prior art keywords
- lining part
- top end
- liner
- lining
- face
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 238000002955 isolation Methods 0.000 claims description 24
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 17
- 229920002323 Silicone foam Polymers 0.000 description 14
- 239000013514 silicone foam Substances 0.000 description 14
- 239000000565 sealant Substances 0.000 description 13
- 229910000831 Steel Inorganic materials 0.000 description 11
- 239000010959 steel Substances 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 229910052697 platinum Inorganic materials 0.000 description 8
- 239000003054 catalyst Substances 0.000 description 7
- 239000003431 cross linking reagent Substances 0.000 description 6
- 239000006260 foam Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 239000012153 distilled water Substances 0.000 description 4
- 239000004590 silicone sealant Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000036632 reaction speed Effects 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 239000004971 Cross linker Substances 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/06—Arrangement, construction or bridging of expansion joints
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
A plow tip pad, said pad comprising a first liner portion, a second liner portion and a third liner portion lying on a same plane, and said second liner portion being located between the first liner portion and the third liner portion; the second lining part is vertically arranged along the up-down direction, and the first lining part and the third lining part are obliquely arranged; the bottom end of the first lining part and the bottom end of the third lining part are intersected with the bottom end of the second lining part, and the intersection points form contact points; the top end of the first lining part and the top end of the third lining part extend upwards in an inclined mode. The invention can effectively support the sealing layer at the upper part, and has free expansion and deformation capacity along the bridge direction. The top surfaces of the supports are all positioned on the same circular arc surface, so that the shape of the bottom surface of the upper sealing agent is shaped, and powerful guarantee is provided for effectively controlling the stress and deformation of the upper elastic body.
Description
Technical Field
The invention belongs to the technical field of civil engineering, and particularly relates to a plow nozzle type gasket which can be applied to the field of construction of urban bridges, ramp roads and highway (railway) bridges.
Background
Most of the existing bridge expansion joint devices are directly exposed to a bridge deck system, and are gradually damaged due to long-term exposure to the environment of air, dust, sundry chips, automobile exhaust and acid rain, so that the service life of the bridge expansion joint devices is greatly reduced. Meanwhile, the vehicle is subjected to long-time continuous repeated impact, and the health of the expansion joint is also seriously affected.
Under the combined action of the factors, the expansion joint is extremely easy to be damaged (the concrete joint is cracked and damaged or the steel joint is rusted and damaged), the bridge metal components such as steel plates and the like are damaged, and the deformation displacement of the expansion joint is misplaced or limited. In the worst case, the accumulation of these defects and damages can cause failure or even collapse of the bridge structure.
Disclosure of Invention
Aiming at the problem that the expansion joint of the existing bridge expansion joint device is easy to damage, the invention provides a plow nozzle type gasket.
The technical scheme adopted by the invention is as follows:
Embodiments of the present application provide a plow tip liner comprising a first liner portion, a second liner portion, and a third liner portion on the same plane, with the second liner portion being located between the first liner portion and the third liner portion;
The second lining part is vertically arranged along the up-down direction, and the first lining part and the third lining part are obliquely arranged; the bottom end of the first lining part and the bottom end of the third lining part are intersected with the bottom end of the second lining part, and the intersection points form contact points; the top end of the first lining part and the top end of the third lining part extend upwards in an inclined mode.
Further, the top end face of the first lining portion, the top end face of the second lining portion and the top end face of the third lining portion are located on the same cambered surface.
Further, the first and third liner portions are symmetrical about the second liner portion.
Further, the first liner portion, the second liner portion, and the third liner portion are equal in length.
Further, the top end face of the first lining portion, the top end face of the second lining portion and the top end face of the third lining portion are located on the same spherical surface.
Further, the contact point is a sharp point.
Further, the pad is a foam pad.
The beneficial effects of the invention are as follows:
(1) The plow-mouth type gasket can effectively support the sealing layer at the upper part and has free expansion and deformation capacity along the bridge direction.
(2) The supporting top surfaces of the plow-mouth type foam gasket are all positioned on the same arc surface, so that the shape of the bottom surface of the upper sealing agent is shaped, and powerful guarantee is provided for effectively controlling the stress and deformation of the upper elastic body.
Drawings
FIG. 1 is a longitudinal cross-sectional view of a bridge expansion joint assembly constructed from a gasket of one embodiment.
Fig. 2 is a schematic structural view of a gasket of an embodiment.
Detailed Description
The following description of the embodiments of the present invention will be made more apparent and fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. 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.
In the description of the present invention, it should be noted that, as the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like are used for convenience in describing the present invention and simplifying the description based on the azimuth or positional relationship shown in the drawings, it should not be construed as limiting the present invention, but rather should indicate or imply that the devices or elements referred to must have a specific azimuth, be constructed and operated in a specific azimuth. Furthermore, the terms "first," "second," "third," and the like, as used herein, are used for descriptive purposes only and are not to be construed as indicating or implying any relative importance.
In the description of the present invention, it should be noted that unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Referring to the drawings, the present embodiment provides a plow-mouth type pad, the pad 3 includes a first pad part 31, a second pad part 32 and a third pad part 33 which are positioned on the same plane, and the second pad part 32 is positioned between the first pad part 31 and the third pad part 33;
The second lining portion 32 is vertically arranged along the up-down direction, and the first lining portion 31 and the third lining portion 33 are obliquely arranged; the bottom end of the first lining portion 31 and the bottom end of the third lining portion 33 are intersected with the bottom end of the second lining portion 32, and the intersection points form contact points; the tip of the first liner 31 and the tip of the third liner 33 each extend obliquely upward. Namely, the first lining 31, the second lining 32 and the third lining 33 constitute a plow-mouth shape.
Further, the top end surface 311 of the first liner 31, the top end surface 321 of the second liner 32, and the top end surface 331 of the third liner 33 are located on the same arc surface.
Specifically, the top end surface 311 of the first liner 31, the top end surface 321 of the second liner 32, and the top end surface 331 of the third liner 33 form a supporting top surface of the liner according to the present invention, that is, the supporting top surface is an arc surface. Further, the top end surface 311 of the first lining 31, the top end surface 321 of the second lining 32 and the top end surface 331 of the third lining 33 are located on the same sphere, i.e. the supporting top surface is a sphere.
Further, the first and third liner portions 31 and 33 are symmetrical with respect to the second liner portion 32.
Further, the first liner 31, the second liner 32 and the third liner 33 have the same length.
The contact point 34 is a sharp point.
The first lining 31, the second lining 32 and the third lining 33 are all made of foam, i.e. the plow nozzle type gasket of the present embodiment is a foam gasket.
The plow-mouth type gasket of the embodiment is used for constructing a bridge expansion joint device, the bridge expansion joint device comprises a pair of section steel 5, the pair of section steel 5 are arranged between two beam plates along the length direction of a bridge in a mirror image mode, the section steel 5 is fixed on the beam plates, an expansion joint is formed by gaps between the two section steel 5 along the length direction of the bridge, and grooves 51 with openings facing the expansion joint are formed in the inner sides of the section steel 5; a seam plugging part which seals the expansion joint and can deform along with the expansion joint is fixed in the expansion joint; defining a bridge length direction (i.e., an x-axis direction in fig. 1) as a left-right direction, and a bridge height direction (i.e., an axial direction in fig. 1) as an up-down direction; the expansion joint deforms in the bridge length direction (i.e., in the x-axis direction in fig. 1).
The caulking part comprises an upper sealing layer 1 and a lower supporting layer;
The supporting layer comprises an elastic strip 4 suspended in the expansion joint, and the left end and the right end of the elastic strip 4 are respectively embedded in grooves 51 of the two sections 5; an elastic isolation plate 2 is paved above the elastic strip 4, and the left side and the right side of the isolation plate 2 are respectively inserted into the grooves 51 on the two sides; a gasket 3 is arranged between the isolation plate 2 and the elastic strip 4, the isolation plate 2 is abutted upwards against the inner top surface of the groove 51 by the top surface of the gasket 3, and the elastic strip 4 is abutted downwards by the bottom surface of the gasket 3.
Specifically, the elastic strip 4 is a rubber strip with elasticity, the liner 3 is a foam liner, the isolation plate 2 is a pearl cotton plate with certain elasticity, and the isolation plate 2 can seal and isolate the sealing layer 1 and the liner 3 below to play a role in protection.
The top surface of the isolation plate 2 and the inner walls of the expansion joints at the two sides form a pouring groove for accommodating the sealing layer 1, and the sealing layer 1 seals the pouring groove.
Further, the isolation board 2 has elasticity, and the isolation board 2 is an upward protruding arc board, and the middle of the isolation board 2 is higher than the left and right sides of the isolation board 2.
Further, the elastic strip 4 has expansion heads 41 on both sides which can be clamped in the grooves 51.
Specifically, the expansion head 41 is inflated in a free state, and the volume of the expansion head 41 in the free state is larger than the volume of the groove 51. After the expansion head 41 is pressed and deformed, the expansion head 4 is plugged into the groove 51, and the expansion head 4 is clamped in the groove 51, so that the elastic strip 4 is fixed.
Further, the opening of the groove 51 is a bevel, and the top surface of the opening is longer than the bottom surface of the opening; and the inner surface of the top surface beyond the bottom surface forms a tight abutting position of the isolation plate 2.
Further, the bottom ends of the first lining part 31, the second lining part 32 and the third lining part 33 intersect at the middle position of the expansion joint along the bridge length direction and form a contact point 34, the contact point 34 is abutted downwards to the middle position of the elastic strip 4, and then the elastic strip 4 is provided with a bending extending downwards at the middle position along the bridge length direction;
The top ends of the first lining part 31 and the third lining part 33 extend upwards from the middle to the lower part of the abutting position of the isolation plate 2, and the two sides of the isolation plate 2 are abutted on the abutting position; the top end of the second liner 32 extends vertically upward and supports the middle portion of the partition plate 2 upward.
The pad 3 is a plow-mouth foam pad, and the longitudinal sections (i.e., plane xoz in fig. 1) of the first, second, and third pad portions 31, 32, 33 are all strip-shaped.
The outer sides of the first and third liner portions 31 and 33 are abutted against the upper surface of the elastic strip 4.
The top end face of the first liner 31, the top end face of the second liner 32 and the top end face of the third liner 33 are all cambered surfaces attached to the lower surface of the isolation board 1, and the top end face of the first liner 31, the top end face of the second liner 32 and the top end face of the third liner 33 are all fixedly connected with the lower surface of the isolation board 1.
Wherein, the top end face of the first lining 31, the top end face of the third lining 33 and the top end face of the third lining 33 are all adhered and fixed with the lower surface of the isolation board 1.
The sealing layer 1 is formed by pouring a silicone foam sealant into a pouring tank.
The silicone foam sealant consists of a silicone sealant white component, a silicone sealant ash component, a cross-linking agent, water and a platinum catalyst, and is characterized in that:
The cross-linking agent is Baysilone U430,430 cross-linking agent. The platinum catalyst is C 24H54O3Pt2Si5, wherein the mass loading of the active ingredient platinum is 2.0-2.2%. The silicone sealant white component is SiliconeSeal white components the silicone sealant ash component is/>SiliconeSeal gray components, and the/>SiliconeSeal white components and the/>SiliconeSeal gray components were purchased from Watson Bowman Ai Mier (WATSON BOWMAN ACME CORP). The cross-linking agent is Baysilone U430,430, 430crosslinker (Baysilone lacks unified chinese translation); the platinum catalyst is Pt-DIVINYLTETRAMETHYL-disiloxane complex GelestInc. The water is distilled water.
The bridge expansion joint device constructed by the invention is a bridge and culvert expansion device which adapts to various displacement values, and can be widely used in cities and public (iron) roads and bridges with various expansion displacement values and various spans.
The bridge expansion joint device constructed by the invention is realized by filling the top of the expansion joint between the beam bodies without re-grooving.
The gasket 3 is a closed waterproof elastomer, and the partition plate 2 laid on the gasket is used for sealing and freely stretches along with the horizontal stretching movement of the upper beam plate.
Before construction, the pre-buried section steel 5 is polished and roughened to realize better adhesion of the silicone foam mixture and the section steel 5.
The elastomeric strip 4, together with the gasket 3 thereon, holds the as-poured thermoplastic silicone foam sealant.
The bridge expansion joint device constructed by the invention comprises the following concrete construction steps:
a. sundries in the expansion joint are cleaned, an elastic strip 4 is installed, the elastic strip 4 is cleaned and dried, and the inner side (the side facing the expansion joint) of the profile steel 5 is polished and roughened so as to realize better adhesion of the silicone foam sealant and the profile steel 5.
B. installing a gasket 3, determining the geometric dimension of the gasket 3 according to the size of the expansion space of the expansion joint and the type of the expansion joint, and cutting out the required gasket 3; the outer side surfaces of the first lining portion 31 and the third lining portion 33 of the gasket 3 are tightly adhered to the elastic strip 4, and the gasket 3 is mounted.
C. the isolation board 2 is installed, the isolation board 2 with proper thickness is paved on the pad 3, and the isolation board 2 and the pad 3 are firmly adhered by glue.
D. Preparing a silicone foam sealant:
d1, preparing the following engineering materials:
A. Chemical preparation: WABO white, WABO black, a cross-linking agent, water and a platinum catalyst, the volume of silicone foam sealant required for an expansion joint of a given known size was measured in advance and prepared as per table 1.
TABLE 1 Silicone foam sealant Components
B. The device comprises: injectors for storing a crosslinking agent, distilled water, and a platinum catalyst, respectively;
An adjusting tool (e.g., a cutting tool) for adjusting the size of the packing 3;
leveling means (e.g., a squeegee) for leveling the silicone foam sealant;
a plastic stirring container;
A battery powered drill;
an electric drill is additionally provided with a stirrer;
a spatula;
An ice cooler.
D2, when the reaction speed is reduced due to low temperature conditions and each mixture of the silicone foam sealant is subjected to chemical reaction, each time the temperature is reduced by 10 ℃, the chemical reaction speed is reduced by half, and each component is firstly respectively filled into an ice cooler for independent storage.
And d4, in the field, placing the gasket 3 into the expansion joint, and pressing the gasket 3 to a preset depth below the bridge deck by using an adjusting tool.
D5, pouring WABO white, WABO black, distilled water and a platinum catalyst into a plastic stirring container, and fully stirring the four components by using a battery power drill and an electric drill with an additional stirrer.
D6 when the water has been uniformly dispersed throughout the mixture (WABO white, WABO black, distilled water and platinum catalyst mixture), the crosslinker is added and mixed with the other components at once to form a mixture.
And d7, pouring the silicone foam sealant into the pouring groove of the expansion joint.
D8, to ensure that the silicone foam sealant is at the proper depth before foaming begins, another person is required to follow the person pouring the silicone foam sealant, and leveling the silicone foam sealant to the proper depth with a leveling tool and spatula.
The embodiments described in the present specification are merely examples of implementation forms of the inventive concept, and the scope of protection of the present invention should not be construed as being limited to the specific forms set forth in the embodiments, and the scope of protection of the present invention and equivalent technical means that can be conceived by those skilled in the art based on the inventive concept.
Claims (4)
1. A plow tip liner, characterized by: the pad comprises a first lining part, a second lining part and a third lining part which are positioned on the same plane, and the second lining part is positioned between the first lining part and the third lining part;
The second lining part is vertically arranged along the up-down direction, and the first lining part and the third lining part are obliquely arranged; the bottom end of the first lining part and the bottom end of the third lining part are intersected with the bottom end of the second lining part, and the intersection points form contact points; the top end of the first lining part and the top end of the third lining part extend upwards in an inclined mode;
The top end face of the first lining part, the top end face of the second lining part and the top end face of the third lining part are positioned on the same cambered surface;
The top end face of the first lining part, the top end face of the second lining part and the top end face of the third lining part are positioned on the same spherical surface;
The caulking part comprises an upper sealing layer and a lower supporting layer;
The support layer comprises an elastic strip suspended in the expansion joint, an elastic isolation plate is paved above the elastic strip, a gasket is arranged between the isolation plate and the elastic strip, the isolation plate is propped against the inner top surface of the groove upwards by the top surface of the gasket, and the elastic strip is propped against downwards by the bottom surface of the gasket;
And the top surface of the isolation plate and the inner walls of the expansion joints at the two sides form a pouring groove for accommodating the sealing layer, and the sealing layer seals the pouring groove.
2. A plow tip liner as defined in claim 1, characterized by: the first and third liner portions are symmetrical about the second liner portion.
3. A plow tip liner as defined in claim 2, characterized in that: the first liner portion, the second liner portion, and the third liner portion are equal in length.
4. A plow tip liner as defined in claim 1, characterized by: the contact point is a sharp point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810497399.7A CN108487057B (en) | 2018-05-22 | 2018-05-22 | Plough nozzle type gasket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810497399.7A CN108487057B (en) | 2018-05-22 | 2018-05-22 | Plough nozzle type gasket |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108487057A CN108487057A (en) | 2018-09-04 |
| CN108487057B true CN108487057B (en) | 2024-05-14 |
Family
ID=63351056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810497399.7A Active CN108487057B (en) | 2018-05-22 | 2018-05-22 | Plough nozzle type gasket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108487057B (en) |
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