CN113235419A - Prefabricated water escape hole for bridge of leak protection water - Google Patents
Prefabricated water escape hole for bridge of leak protection water Download PDFInfo
- Publication number
- CN113235419A CN113235419A CN202110518787.0A CN202110518787A CN113235419A CN 113235419 A CN113235419 A CN 113235419A CN 202110518787 A CN202110518787 A CN 202110518787A CN 113235419 A CN113235419 A CN 113235419A
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- Prior art keywords
- prefabricated
- water
- flange plate
- bridge
- hole
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 110
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 21
- 239000010959 steel Substances 0.000 claims abstract description 21
- 238000003466 welding Methods 0.000 claims abstract description 6
- 239000011374 ultra-high-performance concrete Substances 0.000 claims description 6
- 239000011241 protective layer Substances 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims 3
- 238000009417 prefabrication Methods 0.000 claims 1
- 239000011435 rock Substances 0.000 abstract description 2
- 239000004567 concrete Substances 0.000 description 10
- 238000010276 construction Methods 0.000 description 4
- 201000010099 disease Diseases 0.000 description 4
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000126 substance 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a water leakage preventing prefabricated drain hole for a bridge. The connecting piece comprises a prefabricated water drainage hole, a main beam flange plate and a connecting piece body; the prefabricated water drainage hole is provided with a water dripping edge; the inner side of the main beam flange plate is provided with a connecting piece body; the connecting piece body comprises embedded connecting steel bars, flange plate longitudinal bars and flange plate stirrups; the flange plate longitudinal ribs and the flange plate stirrups are respectively arranged in a longitudinal and transverse mode to form grids; the pre-buried connecting steel bars are pre-buried in the prefabricated water drainage holes and are connected with the longitudinal bars of the main beam flange plates or the stirrups of the main beam flange plates in a welding mode. The prefabricated water drainage hole is effectively connected with the flange plate of the main beam through the connecting piece, so that gaps between the water drainage hole and the main beam caused by various factors during the operation of the bridge are avoided, and accumulated water on the surface of the bridge is prevented from being discharged along the outer contour of the water drainage hole; the inside of the prefabricated drain hole is provided with water dripping rocks, and when gap bridge surface accumulated water is discharged along the inner side of the drain hole between the drain pipe and the drain hole, the water dripping edges can block water from flowing to bridge wing plates and webs.
Description
Technical Field
The invention relates to the technical field of bridge engineering, and particularly provides a water leakage preventing prefabricated water drainage hole for a bridge.
Background
The drainage holes are important components of bridge drainage facilities and are generally arranged on the outer sides of the side beams, the drainage holes are connected with the drainage pipes through post-cast concrete, connecting pieces are not arranged between the drainage holes and the drainage pipes, and the drainage holes and the drainage pipes are connected only through chemical bonding force of the concrete. When the bridge vibration caused by vehicle load during operation causes connection failure or after-cast concrete is vibrated and is not compact, pores exist between the water drainage holes and the water drainage pipes, so that water accumulated on the surface of the bridge seeps to flanges and webs of the bridge along the pores, water seepage, saltpetering and other diseases generally exist in the positions, and the structural durability is seriously reduced. The nature of the disease generation has two aspects, namely that no effective connection measure is arranged between the drainage hole and the drainage pipe, and that no effective measure is adopted to block water seeping along the gap.
Disclosure of Invention
In order to solve the technical problems: the invention provides a prefabricated drain hole for a bridge, which is effectively connected with a bridge deck and can block the leakage prevention of an original drainage path so as to prevent bridge diseases caused by the drain hole.
The invention relates to a water leakage-proof prefabricated water escape hole for a bridge, which comprises a prefabricated water escape hole 1, a main beam flange plate 5 and a connecting piece body 4; the prefabricated water drainage hole 1 is provided with a water dripping edge 2; the inner side of the main beam flange plate 5 is provided with a connecting piece body 4; the connecting piece body 4 comprises embedded connecting steel bars 3, flange plate longitudinal bars 6 and flange plate stirrups 7; the flange plate longitudinal ribs 6 and the flange plate stirrups 7 are respectively arranged in a longitudinal and transverse mode to form grids; the pre-buried connecting steel bars 3 are pre-buried in the prefabricated water drainage holes 1 and are connected with the longitudinal steel bars 6 of the main beam flange plates or the stirrups 7 of the main beam flange plates in a welding mode; the prefabricated water drainage hole 1 is vertically in a five-fold line on the outer contour, the cross section of the prefabricated water drainage hole is T-shaped on the upper part, trapezoidal in the middle and rectangular on the lower part; so as to improve the embedding force between the drainage hole and the bridge deck; the bottom of the dripping edge 2 is flush with the bottom of the prefabricated water drainage hole 1, and the cross section of the dripping edge is concave; two sides of the upper surface of the concave shape are respectively parallel to the inclined edges at two sides of the trapezoid; the distance h2 between the dripping edge 2 and the top surface of the prefabricated drainage hole 1 is larger than the depth h1 of the inner hole of the prefabricated drainage hole 1, so that the seepage water is prevented from being discharged along the outer wall of the drainage hole when the bridge vibrates.
Furthermore, the prefabricated water drainage hole 1 is made of ultra-high performance concrete as a raw material and adopts a factory prefabricated construction mode.
Furthermore, the included angle between the embedded connecting steel bars 3 and the flange plate longitudinal bars 6 or the flange plate stirrups 7 is 45 degrees.
Further, the net protective layer thickness of the pre-buried connecting steel bar 3 is more than or equal to 2 cm.
Further, the upper surface of the prefabricated water drainage hole 1 is higher than the upper surface of the girder flange plate 5, so that the water drainage hole is prevented from being blocked during the concrete pouring of the girder flange plate.
Further, the inner diameter d of the prefabricated drain hole 1 is larger than the outer diameter of the designed drain pipe.
Further, the slope of the bottom surface of the prefabricated drainage hole 1 is consistent with that of the bottom surface of the main beam flange plate 5.
Further, the prefabricated drainage hole 1 should be kept vertical when being positioned and installed.
In the construction process, the prefabricated water drainage holes are prefabricated in a factory, the prefabricated water drainage holes are poured by adopting ultra-high performance concrete, and the embedded connecting steel bars are arranged. After the girder flange plate formwork is installed and the longitudinal bars and the stirrups are bound, the prefabricated water drain holes are installed at corresponding positions according to design, the pre-embedded connecting steel bars and the girder flange plate longitudinal bars or the girder flange plate stirrups are connected in a welding mode, and finally girder concrete is poured.
The prefabricated water drainage hole adopts the ultra-high performance concrete, fully utilizes the advantages of the ultra-high tensile strength, the shock resistance, the excellent permeability resistance, the durability and the like, can avoid the main beam diseases caused by water leakage at the water drainage hole in a limited way, and improves the durability of the bridge. The prefabricated water drainage hole is prefabricated in a factory, only needs to be positioned and installed on site, and basically does not increase the engineering quantity compared with the original design of the bridge.
The invention has the beneficial effects that: the prefabricated water drainage holes are effectively connected with the flange plates of the main beam through the connecting pieces, so that gaps between the water drainage holes and the main beam caused by various factors during the operation of the bridge are avoided, and accumulated water on the surface of the bridge is prevented from being discharged along the outer contour of the water drainage holes; the inner side of the prefabricated drain hole is provided with water dripping rocks, and when accumulated water on the surface of a gap bridge between the drain pipe and the drain hole is drained along the inner side of the drain hole, the water dripping edges can block the water from flowing to bridge wing plates and web plates; in conclusion, the prefabricated drain hole with the water dropping edge can fundamentally solve the problems of water seepage, saltpetering and the like of the main beam concrete caused by water leakage of the bridge drain hole. The prefabricated water drainage hole with the water dripping edge can be widely applied to various concrete bridge structures and steel structure bridges.
Drawings
Fig. 1 is a schematic view of the assembled structure of the present invention. Fig. 2 is a plan view of the present invention. FIG. 3 is a three-dimensional view of the present invention. Fig. 4 is an elevational view of the drip edge preformed drain hole of fig. 3. In the figure: the method comprises the following steps of 1-prefabricating a water drainage hole, 2-dripping edges, 3-embedding connecting steel bars, 4-connecting piece bodies, 5-main beam flange plates, 6-flange plate longitudinal ribs and 7-flange plate stirrups.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully and in detail below with reference to the accompanying drawings and examples, but the scope of the present invention is not limited to the following specific examples. Unless otherwise defined, all terms of art used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the present invention.
Example (b):
a prefabricated water escape hole for a water leakage-proof bridge comprises a prefabricated water escape hole 1, a main beam flange plate 5 and a connecting piece body 4; the prefabricated water drainage hole 1 is provided with a water dripping edge 2; the inner side of the main beam flange plate 5 is provided with a connecting piece body 4; the connecting piece body 4 comprises embedded connecting steel bars 3, flange plate longitudinal bars 6 and flange plate stirrups 7; the flange plate longitudinal ribs 6 and the flange plate stirrups 7 are respectively arranged in a longitudinal and transverse mode to form grids; the pre-buried connecting steel bars 3 are pre-buried in the prefabricated water drainage holes 1 and are connected with the longitudinal steel bars 6 of the main beam flange plates or the stirrups 7 of the main beam flange plates in a welding mode; the prefabricated water drainage hole 1 is vertically in a five-fold line on the outer contour, the cross section of the prefabricated water drainage hole is T-shaped on the upper part, trapezoidal in the middle and rectangular on the lower part; so as to improve the embedding force between the drainage hole and the bridge deck; the bottom of the dripping edge 2 is flush with the bottom of the prefabricated water drainage hole 1, and the cross section of the dripping edge is concave; two sides of the upper surface of the concave shape are respectively parallel to the inclined edges at two sides of the trapezoid; the distance h2 between the dripping edge 2 and the top surface of the prefabricated drainage hole 1 is larger than the depth h1 of the inner hole of the prefabricated drainage hole 1, so that the seepage water is prevented from being discharged along the outer wall of the drainage hole when the bridge vibrates. Furthermore, the prefabricated water drainage hole 1 is made of ultra-high performance concrete as a raw material and adopts a factory prefabricated construction mode. Furthermore, the included angle between the embedded connecting steel bars 3 and the flange plate longitudinal bars 6 or the flange plate stirrups 7 is 45 degrees. The net protective layer of the pre-buried connecting steel bar 3 is more than or equal to 2cm thick. The upper surface of the prefabricated water drainage hole 1 is higher than the upper surface of the girder flange plate 5, so that the water drainage hole is prevented from being blocked during the concrete pouring of the girder flange plate. The inner diameter d of the prefabricated drain hole 1 is larger than the outer diameter of the designed drain pipe. The slope of the bottom surface of the prefabricated drain hole 1 is consistent with that of the bottom surface of the main beam flange plate 5. The prefabricated drainage hole 1 is kept vertical when being positioned and installed.
In the construction process, the prefabricated water drainage hole 1 is prefabricated in a factory, the prefabricated water drainage hole 1 is formed by pouring ultrahigh-performance concrete, and the embedded connecting steel bars 3 are arranged. After the installation of the main beam flange plate 5 template is completed and the binding of the flange plate longitudinal rib 6 and the flange plate stirrup 7 is completed, the prefabricated water release holes 1 are installed at corresponding positions according to design, the embedded connecting steel bars 3 and the main beam flange plate longitudinal rib 6 or the main beam flange plate stirrup 7 are connected in a welding mode, and finally main beam concrete is poured.
In the embodiment, the prefabricated water drainage holes and the main beam flange plates are welded and connected with the main beam flange plate longitudinal bars or the stirrups through the embedded connecting steel bars to form a whole, and gaps cannot be formed between the water drainage holes and the main beam under various actions during the operation of the bridge, so that accumulated water on the surface of the bridge is prevented from being discharged along the outer contour of the water drainage holes; the inner side of the prefabricated drain hole is provided with a water dripping edge, and when accumulated water on the surface of a gap bridge between the drain pipe and the drain hole is drained along the inner side of the drain hole, the water dripping edge can block the water from flowing to a bridge wing plate and a web plate; in conclusion, the prefabricated drain hole with the water dropping edge can fundamentally solve the problems of water seepage, saltpetering and the like of the main beam concrete caused by water leakage of the bridge drain hole.
Claims (8)
1. A prefabricated water escape hole for a water leakage-proof bridge is characterized by comprising a prefabricated water escape hole (1), a girder flange plate (5) and a connecting piece body (4); the prefabricated drain hole (1) is provided with a water dripping edge (2); the inner side of the girder flange plate (5) is provided with a connecting piece body (4); the connecting piece body (4) comprises embedded connecting steel bars (3), flange plate longitudinal bars (6) and flange plate stirrups (7); the flange plate longitudinal ribs (6) and the flange plate stirrups (7) are respectively arranged in a longitudinal and transverse mode to form grids; the pre-buried connecting steel bars (3) are pre-buried in the prefabricated water drain holes (1) and are connected with the longitudinal bars (6) of the main beam flange plates or the stirrups (7) of the main beam flange plates in a welding mode; the prefabricated water drainage hole (1) is vertically in a five-fold line on the outer contour; the bottom of the dripping edge (2) is higher than the bottom of the prefabricated water drainage hole (1), and the cross section of a space formed by the bottom of the dripping edge (2) and the bottom of the prefabricated water drainage hole (1) is in a concave shape; the distance h2 between the dripping edge (2) and the top surface of the prefabricated drainage hole (1) is larger than the depth h1 of the inner hole of the prefabricated drainage hole (1).
2. The prefabricated water escape hole for the bridge of leak protection water of claim 1, characterized in that, the pre-buried connecting reinforcement (3) and the flange plate longitudinal reinforcement (6) or the flange plate stirrup (7) form an included angle of 45 degrees.
3. The prefabricated water escape hole for the bridge of leak protection of claim 1, characterized in that, the net protective layer thickness of pre-buried connecting reinforcement (3) is more than or equal to 2 cm.
4. The prefabricated water escape hole for the bridge of preventing water leakage according to claim 1, wherein the upper surface of the prefabricated water escape hole (1) is higher than the upper surface of the girder flange plate (5).
5. The prefabricated water escape hole for bridge of preventing water leakage according to claim 1, wherein the inner diameter d of the prefabricated water escape hole (1) is larger than the outer diameter of the designed water escape pipe.
6. The prefabricated weep hole for the bridge of preventing water leakage according to claim 1, wherein the slope of the bottom surface of the prefabricated weep hole (1) is identical to the slope of the bottom surface of the girder flange plate (5).
7. The prefabricated water escape hole for the bridge of preventing water leakage according to claim 1, wherein the prefabricated water escape hole (1) is positioned and installed to be kept vertical.
8. The prefabricated water escape hole for the bridge of preventing water leakage according to claim 1, characterized in that the prefabricated water escape hole (1) is made of ultra-high performance concrete and is constructed by factory prefabrication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110518787.0A CN113235419B (en) | 2021-05-12 | 2021-05-12 | Prefabricated water leakage hole for bridge capable of preventing water leakage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110518787.0A CN113235419B (en) | 2021-05-12 | 2021-05-12 | Prefabricated water leakage hole for bridge capable of preventing water leakage |
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| Publication Number | Publication Date |
|---|---|
| CN113235419A true CN113235419A (en) | 2021-08-10 |
| CN113235419B CN113235419B (en) | 2023-06-16 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3142276A1 (en) * | 1981-10-24 | 1983-05-05 | Honel Holding AG Ltd. S.A., Rorbas | Device installed in a concrete slab for carrying away moisture |
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2021
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| CN113235419B (en) | 2023-06-16 |
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