CN114687284A - Bridge support protection method for avoiding soaking of accumulated water under bridge - Google Patents
Bridge support protection method for avoiding soaking of accumulated water under bridge Download PDFInfo
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- CN114687284A CN114687284A CN202210393790.9A CN202210393790A CN114687284A CN 114687284 A CN114687284 A CN 114687284A CN 202210393790 A CN202210393790 A CN 202210393790A CN 114687284 A CN114687284 A CN 114687284A
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- shaped groove
- concrete structure
- accumulated water
- water under
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 65
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000002791 soaking Methods 0.000 title claims abstract description 7
- 239000004567 concrete Substances 0.000 claims abstract description 84
- 239000000463 material Substances 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 238000010276 construction Methods 0.000 claims abstract description 10
- 238000004078 waterproofing Methods 0.000 claims abstract description 3
- 239000004588 polyurethane sealant Substances 0.000 claims description 16
- 229920001971 elastomer Polymers 0.000 claims description 14
- 238000000576 coating method Methods 0.000 claims description 13
- 239000011248 coating agent Substances 0.000 claims description 11
- 239000004744 fabric Substances 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/08—Damp-proof or other insulating layers; Drainage arrangements or devices ; Bridge deck surfacings
- E01D19/086—Drainage arrangements or devices
-
- 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
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/08—Damp-proof or other insulating layers; Drainage arrangements or devices ; Bridge deck surfacings
- E01D19/083—Waterproofing of bridge decks; Other insulations for bridges, e.g. thermal ; Bridge deck surfacings
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention belongs to the technical field of bridge waterproofing, and discloses a bridge support protection method for avoiding soaking of accumulated water under a bridge, which is characterized in that a concrete structure U-shaped groove is arranged at the lower part of the bridge, U-shaped groove sealing plates are arranged at two ends of the concrete structure U-shaped groove, and the concrete structure U-shaped groove and the U-shaped groove sealing plates form a closed water-proof space; the bottom plate of the concrete structure U-shaped groove is arranged on the top surface of a bridge bearing platform, and the height of the side wall is higher than the highest calculated water level of accumulated water under the bridge. The invention can effectively isolate the accumulated water below the bridge, thereby avoiding the bridge support from being soaked by water and obviously prolonging the service life of the bridge support; meanwhile, the method has the advantages of simple materials, convenient construction, economy and practicability.
Description
Technical Field
The invention belongs to the technical field of bridge waterproof, and particularly relates to a method for protecting a bridge support from being soaked by accumulated water under a bridge.
Background
For the bridge in the region with poor geological condition, the subgrade settlement behind the abutment is controlled, the filling height behind the abutment is generally lower, and the specific height is generally 2-3 m. Therefore, the height of the bridge in the area near the bridge head is low, and the height of the underbridge support from the ground is usually only 0.2-1 m. When rainstorm occurs in successive days, rainwater cannot be drained in time or the water level around the bridge changes, and the like, the accumulated water under the bridge is serious. Under the condition, the accumulated water under the bridge can soak the bridge support with lower elevation, so that the service life of the bridge support is adversely affected, the later bridge maintenance cost is increased, and even the safety of the bridge structure is affected in severe cases.
Therefore, measures must be taken to prevent the accumulated water under the bridge from soaking the bridge support, and the service life of the bridge support and the safe use of the bridge structure are ensured. However, in the past, when the support is soaked in water, a water pump is generally adopted to pump water outwards, but the method is time-consuming and labor-consuming, and the problem cannot be solved once and for all. When the rising speed of accumulated water is high, the support can not be soaked by water.
Disclosure of Invention
The invention aims to solve the related technical problems that a bridge support is soaked by accumulated water under a bridge, and provides a bridge support protection method for avoiding the soaking of the accumulated water under the bridge.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention provides a bridge bearing protection method for avoiding soaking of accumulated water under a bridge, which is characterized in that a concrete structure U-shaped groove is arranged at the lower part of the bridge, U-shaped groove seal plates are arranged at two ends of the concrete structure U-shaped groove, and the concrete structure U-shaped groove and the U-shaped groove seal plates form a closed water-proof space; the bottom plate of the concrete structure U-shaped groove is arranged on the top surface of a bridge bearing platform, and the height of the side wall is higher than the highest calculated water level of accumulated water below the bridge; and the top surface of the bridge bearing platform is subjected to cushion layer construction before the construction of the concrete structure U-shaped groove.
And further, setting the concrete structure U-shaped groove within the range that the difference between the elevation of the bottom surface of the bridge support and the highest calculated water level of accumulated water under the bridge is below 25 cm.
Furthermore, the joints of the bottom plate of the U-shaped groove of the concrete structure, the cushion layer and the bridge pier stud are subjected to waterproof treatment by adopting two cloths and three coatings of waterproof polyurethane sealant and a water-swelling rubber strip.
Furthermore, after the concrete strength of the cushion layer meets the design requirement, the joint between the cushion layer and the bridge pier is filled with the water-swelling rubber strip and the polyurethane sealant, and the two-cloth three-coating waterproof is implemented at the intersection corner of the cushion layer and the bridge pier;
and after the concrete strength of the concrete structure U-shaped groove reaches the design requirement, filling the water-swelling rubber strip and the polyurethane sealant into the joint between the bottom plate of the concrete structure U-shaped groove and the bridge pier stud, and implementing the two-coating and three-coating waterproof at the intersection corner of the bottom plate of the concrete structure U-shaped groove and the bridge pier stud.
Further, the width of the bottom plate of the concrete structure U-shaped groove is not more than the width of the bridge deck.
Furthermore, anti-floating pressure heavy materials are paved inside the U-shaped groove of the concrete structure.
Further, the method comprises the following steps:
(1) arranging a water retaining dam in the accumulated water range under the bridge, and evacuating accumulated water in the water retaining dam;
(2) carrying out field leveling according to the appearance and the elevation of the concrete structure U-shaped groove, and pouring a cushion layer of the concrete structure U-shaped groove;
(3) after the concrete strength of the cushion layer meets the design requirement, performing waterproof treatment on a joint between the cushion layer and a bridge pier column;
(4) after the waterproof treatment of the joint in the step (3) is finished, binding main steel bars of the concrete structure U-shaped groove, and pouring concrete of the concrete structure U-shaped groove 1;
(5) after the concrete strength of the concrete structure U-shaped groove reaches the design requirement, performing waterproof treatment on a joint between the concrete structure U-shaped groove and the bridge pier stud;
(6) and (5) after the waterproof treatment of the joint in the step (5) is finished, paving the anti-floating and anti-pressing material of the concrete structure U-shaped groove.
Further, the waterproofing treatment in the steps (3) and (5) is in the form of a combination of a two-cloth three-coat waterproof, a polyurethane sealant, and a water-swellable rubber strip.
The beneficial effects of the invention are:
the invention can realize the waterproof protection of the bridge bearing only by adopting the reinforced concrete U-shaped groove, and has the advantages of simple material, convenient construction, economy, practicability and very low manufacturing cost; compared with the traditional method of removing accumulated water under the bridge by using a water pump, the method has higher efficiency, saves time and labor, and more importantly, can solve the problem that the accumulated water under the bridge soaks the support once and for all, improves the service life of the bridge support, and is further beneficial to prolonging the service life of the bridge; in addition, the invention is not only suitable for the water-proof and waterproof of the newly-built bridge support, but also suitable for the waterproof and waterproof reconstruction of the built bridge support, and can not cause any damage to the existing bridge structure.
Drawings
FIG. 1 is a schematic cross-sectional layout of a bridge deck protection method according to the present invention;
FIG. 2 is a schematic view of the vertical arrangement of the bridge support protection method provided by the present invention;
fig. 3 is a schematic view of waterproof treatment of a joint in the method for protecting a bridge bearer according to the present invention.
In the above figures: 1: a concrete structure U-shaped groove; 2: a cushion layer; 3: waterproof treatment; 4: anti-ballast materials; 5: a U-shaped groove step; 6: a bridge pile foundation; 7: a bridge bearing platform; 8: bridge pier stud; 9: a bridge support; 10: a bridge superstructure; 11: the two cloths and the three cloths are waterproof; 12: a polyurethane sealant; 13: a water-swellable rubber strip; 14: and a U-shaped groove sealing plate.
Detailed Description
In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings:
the conventional bridge structure comprises a bridge pile foundation 6, a bridge bearing platform 7, bridge pier columns 8, a bridge support 9 and a bridge superstructure 10. The bridge upper structure 10 is a travelling crane component, a bridge support 9 is arranged below the bridge upper structure 10, and the bridge support 9 is placed on a bridge pier 8; the lower part foundation that bridge cushion cap 7 and bridge pile foundation 6 constitute provides the support for whole bridge structures, and bridge cushion cap 7 top surface is generally located about 50cm below ground.
As shown in fig. 1 and fig. 2, this embodiment is an improvement on the basis of a conventional bridge structure, and provides a method for protecting a bridge support from being soaked by accumulated water under a bridge, in which a concrete-structured U-shaped groove 1 is arranged at the lower part of a bridge, and a bottom plate, side walls, and head-to-tail U-shaped groove sealing plates 14 form a closed water-proof space, so as to prevent a bridge support 9 from being soaked by water.
The concrete structure U-shaped groove 1 is a groove-shaped concrete structure with a U-shaped cross section and comprises a bottom plate and two side walls. The bottom surface of the bottom plate of the concrete structure U-shaped groove 1 is arranged on the top surface of the bridge bearing platform 7, and the width of the bottom plate is not more than the width of the bridge deck. The height of the side wall of the concrete structure U-shaped groove 1 is higher than the highest calculated water level of accumulated water under the bridge. The top surface of the bridge bearing platform 7 is poured with the cushion layer 2 of the concrete structure U-shaped groove 1 in advance. The side wall of the concrete structure U-shaped groove 1 is also provided with U-shaped groove steps 5, the U-shaped groove steps 5 are usually arranged at intervals of 20m, and the U-shaped groove steps are mainly used for constructors and later-period maintenance personnel to enter and exit the concrete structure U-shaped groove 1.
The length of the concrete structure U-shaped groove is determined according to the height of the bottom surface of the bridge bearing 9 and the highest calculated water level of accumulated water under the bridge. The starting point of the concrete structure U-shaped groove 1 is located at the lowest position of the height of the bridge superstructure 10 in the accumulated water range under the bridge, when the height of the bottom surface of the bridge support 9 is more than 25cm greater than the highest calculated water level of the accumulated water under the bridge, the accumulated water under the bridge cannot influence the bridge support, the concrete structure U-shaped groove 1 is not arranged, and the starting point is the end point of the concrete structure U-shaped groove 1.
The starting point and the end point of the concrete structure U-shaped groove 1 are respectively provided with 1U-shaped groove sealing plate 14, and the U-shaped groove sealing plates 14 and the concrete structure U-shaped groove 1 are integrally cast to form a closed water-proof space under the bridge, so that the bridge support 9 is prevented from being soaked by accumulated water under the bridge.
As shown in fig. 3, the waterproof treatment 3 is adopted at the joint of the bottom plate and the cushion layer 2 of the concrete structure U-shaped groove 1 and the bridge pier stud 8, and the waterproof treatment 3 is preferably in a combined form of two-cloth three-coating waterproof 11, polyurethane sealant 12 and water-swelling rubber strip 13. During the construction, lay bed course 2 earlier, after the concrete strength of bed course 2 reaches the designing requirement, fill in 1 meeting water inflation rubber strip 13 in the seam middle part of bed course 2 and bridge pier 8, then fill in polyurethane sealant 12 in this seam. After the polyurethane sealant 12 is solidified, two-cloth three-coating waterproof 11 is applied to the intersection corner of the cushion layer 2 and the bridge pier stud 8. After the above processes are completed, the concrete structure U-shaped groove 1 is constructed, after the concrete strength of the concrete structure U-shaped groove 1 reaches the design requirement, 1 water-swelling rubber strip 13 is respectively filled in the upper part and the lower part of the joint between the bottom plate of the concrete structure U-shaped groove 1 and the bridge pier column 8, and then the joint is filled with polyurethane sealant 12. After the polyurethane sealant 12 is solidified, two-cloth three-coating waterproof 11 is applied to the intersection corner of the bottom plate of the concrete structure U-shaped groove 1 and the bridge pier stud 8.
An anti-floating pressure material 4 is laid in the concrete structure U-shaped groove 1 to prevent the concrete structure U-shaped groove 1 from floating and moving due to the influence of buoyancy during the water accumulation under the bridge. The anti-floating and anti-pressing material 4 is preferably made of gravels, and the gravels have the characteristics of simple and convenient construction and economic manufacturing cost. The crushed stone can be processed by hard rock or gravel, and can also be natural gravel; the particle size of the crushed stone is controlled to be 15-20 mm, and paving construction is facilitated.
During construction, a water retaining dam is arranged in a region of accumulated water under a bridge, and then the accumulated water in the water retaining dam is pumped out by a water pump. And then, constructing to enter a field, and leveling the field according to the appearance and the elevation of the U-shaped groove 1 of the concrete structure. And after the site is leveled, pouring a cushion layer 2, and after the concrete strength of the cushion layer 2 reaches the design requirement, performing waterproof treatment 3 on the joint between the cushion layer 2 and the bridge pier stud 8 by adopting a combination form of two-cloth three-coating waterproof 11, polyurethane sealant 12 and water-swelling rubber strip 13. And after all seams are subjected to waterproof treatment, binding main steel bars of the concrete structure U-shaped groove 1 and the U-shaped groove sealing plate 14, and pouring concrete of the concrete structure U-shaped groove 1 and the U-shaped groove sealing plate 14. After the concrete strength of the concrete structure U-shaped groove 1 and the U-shaped groove sealing plate 14 reaches the design requirement, performing waterproof treatment 3 on the joint between the concrete structure U-shaped groove 1 and the bridge pier column 8 in a combined mode of two cloths and three coatings of waterproof material 11, polyurethane sealant 12 and water-swelling rubber strips 13; and after the waterproof treatment is finished, finally, paving an anti-floating pressure-bearing material 4 in the concrete structure U-shaped groove 1.
Although the preferred embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and those skilled in the art can make various changes and modifications within the spirit and scope of the present invention without departing from the spirit and scope of the appended claims.
Claims (8)
1. A bridge bearing protection method for avoiding soaking of accumulated water under a bridge is characterized in that a concrete structure U-shaped groove is formed in the lower portion of the bridge, U-shaped groove sealing plates are arranged at two ends of the concrete structure U-shaped groove, and a closed water-proof space is formed by the concrete structure U-shaped groove and the U-shaped groove sealing plates; the bottom plate of the concrete structure U-shaped groove is arranged on the top surface of a bridge bearing platform, and the height of the side wall is higher than the highest calculated water level of accumulated water below the bridge; and the top surface of the bridge bearing platform is subjected to cushion layer construction before the construction of the concrete structure U-shaped groove.
2. The method for protecting a bridge bearing from being soaked by the accumulated water under the bridge as claimed in claim 1, wherein the difference between the elevation of the bottom surface of the bridge bearing and the highest calculated water level of the accumulated water under the bridge is less than 25cm, and the U-shaped groove of the concrete structure is arranged.
3. The method for protecting a bridge bearing from being soaked by accumulated water under a bridge according to claim 1, wherein a joint of a bottom plate of a U-shaped groove of the concrete structure, the cushion layer and a pier stud of the bridge is subjected to waterproof treatment by adopting two cloths and three coats of waterproof polyurethane sealant and a water-swelling rubber strip.
4. The method for protecting a bridge bearing from being soaked by accumulated water under a bridge, according to claim 3, is characterized in that after the concrete strength of the cushion layer meets the design requirement, the water-swelling rubber strip and the polyurethane sealant are filled in the joint of the cushion layer and the bridge pier, and the two-coating and three-coating waterproof is implemented at the intersection corner of the cushion layer and the bridge pier;
and after the concrete strength of the concrete structure U-shaped groove reaches the design requirement, filling the water-swelling rubber strip and the polyurethane sealant into the joint of the bottom plate of the concrete structure U-shaped groove and the bridge pier stud, and implementing the two-cloth three-coating waterproof at the intersection corner of the bottom plate of the concrete structure U-shaped groove and the bridge pier stud.
5. The method for protecting a bridge bearing from being soaked by accumulated water under a bridge according to claim 1, wherein the width of the bottom plate of the U-shaped groove of the concrete structure is not more than the width of the bridge deck.
6. The method for protecting a bridge bearing from being soaked by accumulated water under a bridge according to claim 1, wherein an anti-floating pressure heavy material is laid inside a U-shaped groove of the concrete structure.
7. The method for protecting a bridge bearing from being soaked by accumulated water under a bridge according to claim 1, which is carried out according to the following steps:
(1) arranging a water retaining dam in the accumulated water range under the bridge, and evacuating accumulated water in the water retaining dam;
(2) carrying out field leveling according to the appearance and the elevation of the concrete structure U-shaped groove, and pouring a cushion layer of the concrete structure U-shaped groove;
(3) after the concrete strength of the cushion layer meets the design requirement, performing waterproof treatment on a joint between the cushion layer and a bridge pier column;
(4) after the waterproof treatment of the joint in the step (3) is finished, binding main steel bars of the concrete structure U-shaped groove, and pouring concrete of the concrete structure U-shaped groove 1;
(5) after the concrete strength of the concrete structure U-shaped groove reaches the design requirement, performing waterproof treatment on a joint between the concrete structure U-shaped groove and the bridge pier stud;
(6) and (5) after the waterproof treatment of the joint in the step (5) is finished, paving the anti-floating and anti-pressing material of the concrete structure U-shaped groove.
8. The method for protecting a bridge bearing from being soaked by accumulated water under a bridge according to claim 7, wherein the waterproofing treatment in the steps (3) and (5) is performed by a combination of two-cloth three-coating waterproof, polyurethane sealant and water-swelling rubber strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210393790.9A CN114687284A (en) | 2022-04-15 | 2022-04-15 | Bridge support protection method for avoiding soaking of accumulated water under bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210393790.9A CN114687284A (en) | 2022-04-15 | 2022-04-15 | Bridge support protection method for avoiding soaking of accumulated water under bridge |
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| CN114687284A true CN114687284A (en) | 2022-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210393790.9A Pending CN114687284A (en) | 2022-04-15 | 2022-04-15 | Bridge support protection method for avoiding soaking of accumulated water under bridge |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105002834A (en) * | 2015-07-06 | 2015-10-28 | 上海同罡建筑工程有限公司 | Deviation rectifying and strengthening method for piers |
| KR101967578B1 (en) * | 2018-06-20 | 2019-04-09 | (주)교하엔텍 | Defensive equipment for pier foundation of scour suppress type |
| CN112726390A (en) * | 2021-01-22 | 2021-04-30 | 株洲时代新材料科技股份有限公司 | Waterproof method of bridge support and polyurethane sealing waterproof structure |
| CN213836342U (en) * | 2020-09-27 | 2021-07-30 | 中国电建集团中南勘测设计研究院有限公司 | Overhaul water retaining structure under bridge |
| CN214831865U (en) * | 2021-04-19 | 2021-11-23 | 中铁沈阳铁道装备有限公司 | Bridge beam supports protector |
-
2022
- 2022-04-15 CN CN202210393790.9A patent/CN114687284A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105002834A (en) * | 2015-07-06 | 2015-10-28 | 上海同罡建筑工程有限公司 | Deviation rectifying and strengthening method for piers |
| KR101967578B1 (en) * | 2018-06-20 | 2019-04-09 | (주)교하엔텍 | Defensive equipment for pier foundation of scour suppress type |
| CN213836342U (en) * | 2020-09-27 | 2021-07-30 | 中国电建集团中南勘测设计研究院有限公司 | Overhaul water retaining structure under bridge |
| CN112726390A (en) * | 2021-01-22 | 2021-04-30 | 株洲时代新材料科技股份有限公司 | Waterproof method of bridge support and polyurethane sealing waterproof structure |
| CN214831865U (en) * | 2021-04-19 | 2021-11-23 | 中铁沈阳铁道装备有限公司 | Bridge beam supports protector |
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