CN110700088A - Waterproof extending structure of cantilever bridge - Google Patents
Waterproof extending structure of cantilever bridge Download PDFInfo
- Publication number
- CN110700088A CN110700088A CN201911004699.8A CN201911004699A CN110700088A CN 110700088 A CN110700088 A CN 110700088A CN 201911004699 A CN201911004699 A CN 201911004699A CN 110700088 A CN110700088 A CN 110700088A
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- comb
- waterproof
- strip
- teeth
- waterproof layer
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- 239000000945 filler Substances 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 229920001973 fluoroelastomer Polymers 0.000 claims description 5
- 229920005560 fluorosilicone rubber Polymers 0.000 claims description 5
- 230000008595 infiltration Effects 0.000 abstract description 2
- 238000001764 infiltration Methods 0.000 abstract description 2
- 239000000428 dust Substances 0.000 description 13
- 230000008901 benefit Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 239000004566 building material Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010073 coating (rubber) Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/06—Arrangement, construction or bridging of expansion joints
- E01D19/065—Joints having sliding plates
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a cantilever beam bridge waterproof telescopic structure which comprises two comb plates arranged in parallel, wherein an expansion joint is formed between the two comb plates, a row of comb teeth are arranged at the top of the inner wall of each comb plate, the comb teeth of the two comb plates are arranged in a staggered manner, flexible flow deflectors and a waterproof layer are arranged in the expansion joint below the comb teeth, the waterproof layer is arranged at the bottom of the expansion joint, the flow deflectors are arranged above the waterproof layer, the cross section of each flow deflector is V-shaped, the middle part of each flow deflector is high, and the heights of the two sides of each flow deflector are gradually reduced. This extending structure waterproof performance is excellent, can prevent effectively in rainwater and the rubbish earth infiltration expansion joint, improves the durability and the security of cantilever beam bridge.
Description
Technical Field
The invention relates to the field of bridge construction, in particular to a cantilever bridge waterproof telescopic structure.
Background
A cantilever beam bridge refers to a beam bridge having a simple beam freely hanging out at one or both ends as a main load-bearing member of the superstructure. The cantilever bridge can be divided into a single cantilever bridge, a double cantilever bridge, a multi-hole cantilever bridge, a T-shaped cantilever bridge with hanging holes and the like. The most common cantilever bridge in engineering is a single cantilever bridge or a double cantilever bridge.
In order to meet the requirement of deformation of the bridge deck of the cantilever beam bridge, expansion joints are usually arranged between two beam ends, between the beam ends and the abutment, or at the hinged position of the bridge. The expansion joint is required to be freely telescopic in two directions parallel to and perpendicular to the axis of the bridge, and the expansion joint is firm and reliable, and when a vehicle runs, the vehicle is smooth and free of sudden jump and noise; the rainwater and garbage soil can be prevented from infiltration and blocking; the installation, the inspection, the maintenance and the dirt elimination are all simple and convenient. At the location of the expansion joints, the railings and the bridge deck pavement are disconnected, and displacement and connection between upper structures caused by vehicle loads and bridge building materials are adjusted. Once the expansion joint is destroyed, the service life and the safety of the cantilever bridge are seriously influenced.
Disclosure of Invention
In order to solve the technical problems, the invention discloses a cantilever bridge waterproof telescopic structure which is excellent in waterproof performance, can effectively prevent rainwater and garbage soil from permeating into an expansion joint, and improves the durability and safety of the cantilever bridge.
The invention is realized by the following technical scheme:
the utility model provides a waterproof extending structure of cantilever beam bridge, includes two parallel arrangement's fishback, forms an expansion joint between two fishback, and fishback inner wall top is equipped with one row of broach, and the broach of two fishback is crisscross to be set up, be equipped with flexible water conservancy diversion piece and waterproof layer in the expansion joint of broach below, the waterproof layer setting is in the expansion joint bottom, and the water conservancy diversion piece sets up in the waterproof layer top, the water conservancy diversion piece cross-section is the V-arrangement, and its middle part is high, and both sides height progressively reduce along length direction.
According to the expansion joint structure, the expansion joint formed by the two comb plates is used for preventing the cantilever bridge from cracking or deforming caused by vehicle load and temperature change of bridge building materials, the comb teeth arranged on the tops of the inner walls of the two comb plates in a staggered mode can improve the shear strength of the bridge, the stability of the bridge is improved, the flow deflectors arranged in the expansion joint are V-shaped, the middle part of the expansion joint is high, the two sides of the expansion joint are low, water and dust falling into the expansion joint automatically collect in the center of the V-shaped groove and collect to the two ends of the flow deflectors along the length direction of the flow deflectors, the water and dust are finally discharged, the expansion joint structure is prevented from being corroded due to accumulation of the water and dust, the expansion joint structure is damaged, the waterproof layer arranged at the bottom of the expansion joint can further improve the waterproof.
Wherein, be equipped with the clearance between broach and the broach on another fishback and another fishback, the broach below still is equipped with spacing tooth, and spacing tooth level is fixed on the fishback, and just single spacing tooth is located under another fishback's the broach, and spacing tooth and another fishback and the spacing intertooth on another fishback are equipped with the clearance.
In the invention, the limiting teeth are arranged under the comb teeth of the other comb plate, on one hand, the limiting teeth are matched with the limiting teeth on the other comb plate, so that the shearing strength of the bridge is further improved; on the other hand, when the bridge received the load and too big lead to vertical direction disturbance increase, spacing tooth and the broach interact on another fishback of top realized the transmission of power between the expansion joint both sides pontic, do benefit to the whole atress of cantilever beam bridge, improved the stability and the security of cantilever beam bridge.
Furthermore, the comb plate outer wall is provided with a plurality of positioning pieces, and the positioning pieces are used for being integrated with concrete pouring of the cantilever beam bridge.
Further, two fishback inner walls of spacing tooth below respectively are equipped with a bar recess, and the bar recess extends along fishback length direction level, the bar recess sets up in the water conservancy diversion piece top, inserts the strip shaped plate of a matching between two bar recesses, and the strip shaped plate can be dismantled with the fishback and be connected.
Furthermore, still be equipped with the second recess on the fishback inner wall between bar recess and the spacing intertooth, the second recess is on a parallel with the bar recess, has filled the buffering filler in the cavity that fishback, broach, spacing tooth and bar board enclose.
Furthermore, the buffer filler is a high-elastic filler, and the buffer filler is pulled out of the strip-shaped plate after being cured.
According to the invention, the buffer filler is filled in the cavity enclosed by the comb plate, the comb teeth, the limiting teeth and the strip-shaped plates, the filler has elasticity, on the premise of not influencing the function of the expansion joint, the gaps among the comb teeth, the limiting teeth and the strip-shaped plates can be sealed, dust, gravels and rainwater can be prevented from falling, the first waterproof effect is achieved, the ageing caused by rainwater erosion can be avoided for the flow deflector and the waterproof layer below, the service lives of the flow deflector and the waterproof layer are prolonged, after the cantilever bridge is used for a long time, the dust generated by ageing of the buffer filler is buffered, seepage water enters the flow deflector, the flow deflector automatically collects the dust and the moisture to the two ends of the flow deflector and discharges the dust and the moisture from the expansion joint, only the buffer filler needs to be cleaned and refilled during maintenance, the waterproof performance of the telescopic structure is effectively improved.
The cushion filler may be a high elastic rubber coating or the like, and is not particularly limited.
Further, the water conservancy diversion piece becomes the bar, and two fishback inner walls are inlayed to water conservancy diversion piece both sides limit, and two fishback inner walls are equipped with the first draw-in groove that matches with water conservancy diversion piece both sides limit.
Furthermore, the waterproof layer becomes the bar, and waterproof layer both sides limit embedding two fishback inner walls, and two fishback inner walls are equipped with the second draw-in groove that matches with waterproof layer both sides limit, the waterproof layer cross-section is V-arrangement or recessed arc.
Further, the flow deflector and the waterproof layer are made of fluororubber or fluorosilicone rubber, the thickness of the flow deflector is 1.5mm-3mm, and the thickness of the waterproof layer is 1-2 mm.
The fluororubber or the fluorosilicone rubber has excellent corrosion resistance, and can be applied to a telescopic structure to improve the durability of a bridge.
Furthermore, the distance between the comb teeth and the limiting teeth is 1-5 cm.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the invention relates to a waterproof telescopic structure of a cantilever beam bridge, wherein an expansion joint formed by two comb plates is used for preventing the cantilever beam bridge from cracking or deforming caused by vehicle load and temperature change of bridge building materials, the comb teeth arranged on the tops of the inner walls of the two comb plates in a staggered mode can improve the shear strength of the bridge and improve the stability of the bridge, a flow deflector arranged in the expansion joint is V-shaped, the middle part of the flow deflector is high, the two sides of the flow deflector are low, water and dust falling into the expansion joint are automatically collected to the center of the V-shaped groove and collected to the two ends of the flow deflector along the length direction of the flow deflector and finally discharged from the expansion joint, the expansion joint structure is damaged by avoiding corrosion of the comb plates and the flow deflector caused by accumulation of the water and dust, the waterproof layer arranged at the bottom of the waterproof layer can further improve the waterproof structure;
2. according to the waterproof telescopic structure of the cantilever beam bridge, the limiting teeth are arranged under the comb teeth of the other comb plate, on one hand, the limiting teeth are matched with the limiting teeth on the other comb plate, and the shearing strength of the bridge is further improved; on the other hand, when the deflection in the vertical direction is increased due to overlarge load on the bridge, the limiting teeth and the comb teeth on the other comb plate above the limiting teeth interact with each other to realize the transmission of force between bridge bodies at two sides of the expansion joint, so that the whole stress of the cantilever beam bridge is facilitated, and the stability and the safety of the cantilever beam bridge are improved;
3. the invention relates to a cantilever beam bridge waterproof telescopic structure, wherein a cavity enclosed by a comb plate, comb teeth, limit teeth and a strip-shaped plate is filled with buffer filler, the filler has elasticity, on the premise of not influencing the function of the expansion joint, the gap among the comb teeth, the limit teeth and the strip-shaped plates can be sealed, dust, gravels and rainwater are prevented from falling, the first waterproof function is achieved, and can also avoid the aging of the lower flow deflector and the waterproof layer caused by the erosion of illumination and rainwater, prolong the service life of the flow deflector and the waterproof layer, after the cantilever beam bridge is used for a long time, the buffer filler is aged, dust and water generated enter the flow deflector, the flow deflector automatically collects the dust and water to the two ends of the flow deflector and discharges the dust and the water from the expansion joint, only the buffer filler needs to be cleaned and refilled during maintenance, the waterproof performance of the telescopic structure is effectively improved, the maintenance period is prolonged, and the labor cost is reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic cross-sectional view of the present invention;
fig. 3 is a top view of the comb plate of the present invention.
Reference numbers and corresponding part names in the drawings:
1-comb plate, 11-positioning piece, 12-strip-shaped groove, 13-second groove, 14-first clamping groove, 15-second clamping groove, 2-expansion joint, 3-comb teeth, 4-flow deflector, 5-waterproof layer, 6-limiting tooth, 7-concrete, 8-strip-shaped plate and 9-buffer filler.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1
As shown in fig. 1-3, the waterproof telescopic structure of the cantilever bridge of the present invention comprises two comb plates 1 arranged in parallel, an expansion joint 2 is formed between the two comb plates 1, a row of comb teeth 3 is arranged on the top of the inner wall of the comb plates 1, the comb teeth 3 of the two comb plates 1 are arranged in a staggered manner, a flexible flow deflector 4 and a waterproof layer 5 are arranged in the expansion joint 2 below the comb teeth 3, the waterproof layer 5 is arranged at the bottom of the expansion joint 2, the flow deflector 4 is arranged above the waterproof layer 5, the cross section of the flow deflector 4 is V-shaped, the middle part of the flow deflector is high, and the heights of the two sides are gradually reduced along.
Wherein, be equipped with the clearance between broach 3 and another broach 1 and the broach 3 on another broach 1, 3 below of broach still are equipped with spacing tooth 6, and 6 levels of spacing tooth are fixed on broach 1, and just single spacing tooth 6 is located under broach 3 of another broach 1, and spacing tooth 6 and another broach 1 and the spacing tooth 6 on another broach 1 are equipped with the clearance between.
Example 2
As shown in fig. 1-3, in this embodiment, based on embodiment 1, the outer wall of the comb plate 1 is provided with a plurality of positioning members 11, and the positioning members 11 are used to be cast with the cantilever bridge concrete 7 as a whole.
Further, 1 inner wall of two fishback of spacing tooth 6 below respectively is equipped with a bar recess 12, and bar recess 12 extends along 1 length direction level of fishback, bar recess 12 sets up in 4 tops of water conservancy diversion pieces, inserts the strip board 8 of a matching between two bar recesses 12, and strip board 8 can be dismantled with fishback 1 and be connected.
Further, still be equipped with second recess 13 on the 1 inner wall of fishback between bar recess 12 and spacing tooth 6, second recess 13 is on a parallel with bar recess 12, has filled buffering filler 9 in the cavity that fishback 1, broach 3, spacing tooth 6 and strip shaped plate 8 enclose.
Further, the buffer filler 9 is a high-elastic filler, and the strip-shaped plate 8 is pulled out after the buffer filler 9 is cured.
Example 3
As shown in fig. 1 to 3, in this embodiment, based on embodiment 1 or 2, the flow deflector 4 is in a strip shape, two side edges of the flow deflector 4 are embedded into inner walls of the two comb plates 1, and the inner walls of the two comb plates 1 are provided with first clamping grooves 14 matching with the two side edges of the flow deflector 4.
Further, waterproof layer 5 becomes the bar, and waterproof layer 5 both sides limit embedding two 1 inner walls of fishback, and two 1 inner walls of fishback are equipped with the second draw-in groove 15 that matches with waterproof layer 5 both sides limit, waterproof layer 5 cross-section is V-arrangement or recessed arc.
Further, the flow deflector 4 and the waterproof layer 5 are made of fluororubber or fluorosilicone rubber, the thickness of the flow deflector 4 is 1.5mm-3mm, and the thickness of the waterproof layer 5 is 1-2 mm.
Furthermore, the distance between the comb teeth 3 and the limiting teeth 6 is 1-5 cm.
Example 4
As shown in fig. 1 to 3, in this embodiment, based on embodiment 1 or 2, the flow deflector 4 is in a strip shape, two side edges of the flow deflector 4 are embedded into inner walls of the two comb plates 1, and the inner walls of the two comb plates 1 are provided with first clamping grooves 14 matching with the two side edges of the flow deflector 4.
Further, waterproof layer 5 becomes the bar, and waterproof layer 5 both sides limit embedding two 1 inner walls of fishback, and two 1 inner walls of fishback are equipped with the second draw-in groove 15 that matches with waterproof layer 5 both sides limit, waterproof layer 5 cross-section is V-arrangement or recessed arc.
Further, the flow deflector 4 and the waterproof layer 5 are made of fluororubber or fluorosilicone rubber, the thickness of the flow deflector 4 is 3mm, and the thickness of the waterproof layer 5 is 1 mm.
Furthermore, the distance between the comb teeth 3 and the limiting teeth 6 is 2 cm.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The utility model provides a waterproof extending structure of cantilever beam bridge, includes two parallel arrangement's fishback (1), forms an expansion joint (2) between two fishback (1), its characterized in that, fishback (1) inner wall top is equipped with one row of broach (3), and broach (3) of two fishback (1) are crisscross to be set up, be equipped with flexible water conservancy diversion piece (4) and waterproof layer (5) in expansion joint (2) of broach (3) below, waterproof layer (5) set up in expansion joint (2) bottom, and water conservancy diversion piece (4) set up in waterproof layer (5) top, water conservancy diversion piece (4) cross-section is the V-arrangement, and its middle part is high, and both sides highly reduce gradually along length direction.
2. The cantilever bridge waterproof telescopic structure according to claim 1, wherein gaps are arranged between the comb teeth (3) and the other comb plate (1) and the comb teeth (3) on the other comb plate (1), limiting teeth (6) are further arranged below the comb teeth (3), the limiting teeth (6) are horizontally fixed on the comb plates (1), a single limiting tooth (6) is located under the comb teeth (3) of the other comb plate (1), and gaps are arranged between the limiting teeth (6) and the other comb plate (1) and the limiting teeth (6) on the other comb plate (1).
3. The cantilever bridge waterproof expansion structure of claim 1, wherein the comb plate (1) is provided with a plurality of positioning members (11) on the outer wall, and the positioning members (11) are used for being cast with the cantilever bridge concrete (7) into a whole.
4. The cantilever beam bridge waterproof telescopic structure according to claim 2, wherein the inner walls of the two comb plates (1) below the limit teeth (6) are respectively provided with one strip-shaped groove (12), the strip-shaped grooves (12) horizontally extend along the length direction of the comb plates (1), the strip-shaped grooves (12) are arranged above the flow deflector (4), a matched strip-shaped plate (8) is inserted between the two strip-shaped grooves (12), and the strip-shaped plate (8) is detachably connected with the comb plates (1).
5. The cantilever beam bridge waterproof telescopic structure according to claim 4, wherein a second groove (13) is further arranged on the inner wall of the comb plate (1) between the strip-shaped groove (12) and the limiting teeth (6), the second groove (13) is parallel to the strip-shaped groove (12), and the buffer filler (9) is filled in a cavity defined by the comb plate (1), the comb teeth (3), the limiting teeth (6) and the strip-shaped plate (8).
6. The waterproof telescopic structure of the cantilever bridge according to claim 5, wherein the buffer filler (9) is a high elastic filler, and the strip-shaped plate (8) is drawn away after the buffer filler (9) is cured.
7. The cantilever bridge waterproof expansion structure of claim 1, wherein the flow deflector (4) is in a strip shape, two side edges of the flow deflector (4) are embedded into the inner walls of the two comb plates (1), and the inner walls of the two comb plates (1) are provided with first clamping grooves (14) matched with the two side edges of the flow deflector (4).
8. The cantilever bridge waterproof expansion structure of claim 1, wherein the waterproof layer (5) is in a strip shape, two side edges of the waterproof layer (5) are embedded into the inner walls of the two comb plates (1), the inner walls of the two comb plates (1) are provided with second clamping grooves (15) matched with the two side edges of the waterproof layer (5), and the cross section of the waterproof layer (5) is in a V shape or a concave arc shape.
9. The cantilever bridge waterproof expansion structure of claim 7, wherein the flow deflector (4) and the waterproof layer (5) are made of fluororubber or fluorosilicone rubber, the thickness of the flow deflector (4) is 1.5mm-3mm, and the thickness of the waterproof layer (5) is 1-2 mm.
10. The waterproof telescopic structure of the cantilever bridge according to claim 2, wherein the distance between the comb teeth (3) and the limit teeth (6) is 1-5 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911004699.8A CN110700088A (en) | 2019-10-22 | 2019-10-22 | Waterproof extending structure of cantilever bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911004699.8A CN110700088A (en) | 2019-10-22 | 2019-10-22 | Waterproof extending structure of cantilever bridge |
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| Publication Number | Publication Date |
|---|---|
| CN110700088A true CN110700088A (en) | 2020-01-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911004699.8A Pending CN110700088A (en) | 2019-10-22 | 2019-10-22 | Waterproof extending structure of cantilever bridge |
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| Country | Link |
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| CN (1) | CN110700088A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115341469A (en) * | 2022-01-27 | 2022-11-15 | 浙江理工大学 | Adjustable temporary connection spare |
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| KR20190012428A (en) * | 2017-07-27 | 2019-02-11 | 김낙헌 | Improved Waterproofing Structure for Bridge Expansion Joint |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115341469A (en) * | 2022-01-27 | 2022-11-15 | 浙江理工大学 | Adjustable temporary connection spare |
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