River-crossing municipal bridge deck drainage system
By using bridge deck collection wells, lower bottom flat horizontal drainage pipes and sidewalk brick collection wells in the cross-river bridge, the problem of longitudinal drainage of cross-river bridge affecting landscape and maintenance is solved, and a beautiful, economical and reliable drainage system is achieved.
Patent Information
- Application Number
- CN202422051627.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-23
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-08-23
AI Technical Summary
The prior art is difficult to achieve longitudinal drainage in cross-river bridges without affecting the bridge landscape, and there are problems of maintenance difficulties.
The water collection well is built with bridge deck water collection wells, flat horizontal drainage pipes at the bottom and bricks on the sidewalk. They are connected by longitudinal drainage pipes and are hidden under the sidewalk slabs. Invisible manhole covers are installed for easy maintenance, and waterproof coatings are installed in key areas to prevent leakage.
The longitudinal drainage of the cross-river bridge does not affect the landscape, is convenient for maintenance, and takes up a small space, is economical in construction, and has good waterproofing effect.
Smart Images
Figure CN223151034U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of bridge design and construction, and is applicable to municipal river-crossing bridges with sidewalks arranged on the bridge deck, especially for bridge projects with high landscape requirements, decorations on the outer surface of the bridge and not suitable for hanging drainage pipes. Background Art
[0002] In the construction of urban bridges, bridge deck drainage is a key issue in bridge ancillary projects, especially for river-spanning bridges. Because they cannot discharge rainwater from the bridge deck directly into the river, it is necessary to set up longitudinal drainage devices along the longitudinal direction of the bridge within the river. This faces more technical problems than ordinary municipal bridges on land.
[0003] At present, the most common longitudinal drainage method for river-crossing bridges is to hang longitudinal drainage pipes on the bridge facade, which can meet the needs of river-crossing drainage and facilitate maintenance. However, with the increasing requirements for urban bridge landscape, the method of hanging drainage pipes outside, which affects the bridge facade landscape, is often not suitable. The method of placing longitudinal drainage pipes in the space under the sidewalk slab faces the problem of connecting the drainage pipes with the water collection well and the problem of maintenance of the longitudinal drainage pipes after the sidewalk slab construction is completed. Utility Model Content
[0004] The purpose of the utility model is to solve the above-mentioned problems in the prior art. The utility model provides a bridge deck drainage system for a municipal bridge across a river, which can solve the bridge deck drainage problem of a municipal bridge across a river, or meet the bridge landscape requirements, and facilitate subsequent inspection and maintenance.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] The utility model provides a drainage system for a bridge deck of a municipal bridge across a river, comprising a bridge deck water collection well, a lower bottom flat transverse drainage pipe, a sidewalk brick-built water collection well, and a longitudinal drainage pipe; the bridge deck water collection well is located at the low point of the transverse slope of the bridge deck outside the sidewalk curb, is arranged at a certain distance in the longitudinal bridge direction, and is used to collect rainwater on the bridge deck; a plurality of longitudinal bridge-direction sidewalk brick-built water collection wells are arranged on the inner side of the sidewalk curb at the corresponding position of the bridge deck water collection well, which are used to collect rainwater collected in the bridge deck water collection well and serve as connection nodes of the longitudinal drainage pipe; the bridge deck water collection well is connected with the sidewalk brick-built water collection well through the lower bottom flat transverse drainage pipe, and the plurality of longitudinal bridge-direction sidewalk brick-built water collection wells are connected through the longitudinal drainage pipe at the bottom of the sidewalk brick-built water collection well, so that the collected bridge deck rainwater is discharged to the shore pier along the longitudinal bridge direction, and is merged into the municipal drainage system through the vertical downpipe.
[0007] Specifically, the net width of the brick-built water collection well on the sidewalk is 500 to 700 mm.
[0008] Specifically, waterproof coatings are provided within the scope of the brick-built catch basins on the sidewalk and the longitudinal drain pipes to prevent rainwater seepage from affecting the main structure of the bridge.
[0009] Specifically, the catch basins on the bridge deck are made of cast iron or steel.
[0010] Specifically, the catch basins on the bridge deck are arranged at intervals of 10 - 15 m longitudinally along the bridge.
[0011] Specifically, the longitudinal drain pipes are made of PVC.
[0012] Specifically, the longitudinal drain pipes have a diameter of 200 - 250 mm.
[0013] Specifically, the horizontally laid drain pipes with a flat bottom are made of steel.
[0014] Specifically, vertical drain pipes at the shore piers are provided within the scope of the brick-built catch basins on the sidewalk, and municipal pipelines are arranged at other positions under the sidewalk.
[0015] Specifically, the cover plate above the brick-built catch basins on the sidewalk is an invisible manhole cover. The invisible manhole cover is quadrilateral, including an outer frame and an inner frame of the manhole cover. There is a reinforcing steel mesh and a bottom plate below it in the middle. Steel lifting lugs and steel sealing ends are provided at the four corners inside the outer frame and the inner frame of the manhole cover, which facilitates opening and maintenance.
[0016] Specifically, the paving on the surface of the invisible manhole cover is the same as that of the sidewalk paving, which can make the bridge deck beautiful and harmonious.
[0017] Specifically, both the outer frame and the inner frame of the manhole cover are made of stainless steel angle steel, and the bottom plate, steel lifting lugs and steel sealing ends are all made of stainless steel plates.
[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0019] The obvious technical features formed by the above-mentioned scheme features of the present utility model are as follows. First, it meets the demand for longitudinal drainage within the river channel range of the municipal cross-river bridge, and hides the longitudinal drainage pipe under the sidewalk slab without affecting the bridge landscape modeling. Second, at the corresponding position of the bridge deck catch basin, a brick masonry catch basin for the sidewalk is arranged on the inner side of the sidewalk to facilitate the connection of longitudinal and transverse drainage pipes. An invisible manhole cover is arranged above it, which not only has the function of being convenient for opening and maintenance, but also does not affect the integrity of the sidewalk paving. Third, the longitudinal drainage pipe and the brick masonry catch basin for the sidewalk only occupy a small amount of space under the sidewalk, and have little impact on the demand for municipal pipelines to cross the bridge. Fourth, the cost is economical. The drainage system of the present utility model uses conventional drainage devices, and the cost control is good. Fifth, it has a perfect waterproof system. Waterproof coatings are arranged in the range of the brick masonry catch basin for the sidewalk and the longitudinal drainage pipe to prevent rainwater seepage from affecting the main structure of the bridge. In summary, the present utility model further meets the requirements of bridge landscape, later maintenance, etc. while ensuring that the bridge deck drainage function of the cross-river municipal bridge is not affected, and can be applied to bridge projects with high landscape requirements and decorative bridge outer surfaces that are not suitable for hanging drainage pipes. Brief Description of the Drawings
[0020] Figure 1 is the plan layout diagram of the bridge deck drainage system of the cross-river municipal bridge in the embodiment;
[0021] Figure 2 is Figure 1 the cross-sectional layout diagram of the positions of the brick masonry catch basin for the sidewalk and the bridge deck catch basin;
[0022] Figure 3 is Figure 1 the cross-sectional layout diagram of the non-catch basin position;
[0023] Figure 4 is the cross-sectional layout diagram of the invisible manhole cover of the brick masonry catch basin for the sidewalk in the embodiment;
[0024] Figure 5 is the plan layout diagram of the invisible manhole cover of the brick masonry catch basin for the sidewalk in the embodiment;
[0025] Figure 6 is the detailed layout drawing of the waterproof coating at the non-catch basin position of the bridge deck drainage system of the cross-river municipal bridge in the embodiment;
[0026] Figure 7 is the detailed layout drawing of the waterproof coating of the cross-section of the brick masonry catch basin for the sidewalk of the bridge deck drainage system of the cross-river municipal bridge in the embodiment;
[0027] Figure 8 is the detailed layout drawing of the waterproof coating of the cross-section of the bridge deck catch basin of the bridge deck drainage system of the cross-river municipal bridge in the embodiment;
[0028] As shown in the figure:
[0029] 1-bridge deck water collection well, 2-lower bottom flat horizontal drainage pipe, 3-sidewalk brick water collection well, 4-longitudinal drainage pipe, 5-sidewalk curb, 6-sidewalk inner partition wall, 7-sidewalk brick water collection well side wall, 8-invisible manhole cover, 9-sidewalk slab, 10-steel beam top surface, 11-100mm concrete pavement layer, 12-roadway pavement, 13-manhole cover surface pavement, 14-manhole cover outer frame, 15-manhole cover inner frame, 16-steel lifting ears, 17-bottom plate, 18-reinforced steel mesh, 19-steel end cap, 20-bridge deck pavement, 21-filter net. DETAILED DESCRIPTION
[0030] The utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the utility model will become clearer according to the following description and claims. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the utility model.
[0031] Example
[0032] Design a municipal river-crossing bridge. The overall layout of the bridge is: 45+50+45m. The bridge deck is set to be wider, and the inner side of the bridge is aligned with the road. According to the road section layout, the bridge is divided into two north-south bridges, with six lanes in both directions of the auxiliary bridge + non-motorized vehicle lanes and sidewalks on both sides. The specific layout of the standard cross-section of the single-span bridge is: [0.25m (railing) + 3.5m (sidewalk) + 5.0m (non-motorized vehicle lane) + 2.0m (side strip) + 12.0m (motorized vehicle lane) + 0.5m (crash barrier)] = 23.25m.
[0033] The above municipal bridges across the river are designed to adopt the bridge deck drainage system of this utility model under the sidewalk. Please refer to Figures 1 to 3, including a bridge deck water collection well 1, a lower bottom flat transverse drainage pipe 2, a sidewalk brick water collection well 3, and a longitudinal drainage pipe 4. Several bridge deck water collection wells 1 are located at the low point of the bridge deck transverse slope outside the sidewalk curb 5, arranged in the longitudinal direction of the bridge, used to collect rainwater on the bridge deck, and are made of cast iron or steel; several longitudinal sidewalk brick water collection wells 3 with a net width of 660mm are arranged on the inner side of the sidewalk curb 5 at the corresponding position of the bridge deck water collection well 1, used to collect rainwater collected in the bridge deck water collection well 1, and serve as a connection node for the longitudinal drainage pipe 4. The bridge deck water collection well 1 and the sidewalk brick water collection well 3 are arranged at intervals of 15m in the longitudinal direction of the bridge. The bridge deck water collection well 1 is connected to the sidewalk brick water collection well 3 through the lower bottom flat transverse drainage pipe 2, which is made of steel with a specification of DN120*80. Several brick-built water collection wells 3 on the sidewalks in the longitudinal direction of the bridge are connected through the longitudinal drainage pipes 4 at the bottom of the brick-built water collection wells 3 on the sidewalks. The longitudinal drainage pipes 4 are made of PVC and have a diameter of 250mm. Vertical downspouts are set at the shore piers within the scope of the brick-built water collection wells 3 on the sidewalks. The longitudinal drainage pipes 4 discharge the collected rainwater on the bridge deck along the longitudinal direction of the bridge to the shore piers, and merge into the municipal drainage system through the vertical downspouts. Municipal pipelines are arranged at other locations under the sidewalks.
[0034] See also Figure 4 and Figure 5 The cover plate above the brick-built water collection well 3 on the sidewalk is an invisible manhole cover 8. The invisible manhole cover is a quadrilateral, including a manhole cover outer frame 14 and a manhole cover inner frame 15, with a reinforcing steel mesh 18 and a bottom plate 17 below it in the middle. Steel ears 16 and steel end caps 19 are set at the four corners of the manhole cover outer frame 14 and the manhole cover inner frame 15 to facilitate opening and maintenance. The manhole cover outer frame 14 is made of 110*7 stainless steel angle steel, the manhole cover inner frame 15 is made of 100*6 stainless steel angle steel, the steel ears 16 are made of 5mm thick stainless steel plate, the bottom plate 17 is made of 4mm thick stainless steel plate, the reinforcing steel mesh 18 is made of reinforcing steel bars with a diameter of 12mm and a spacing of 150mm, and the steel end caps 19 are made of 5mm thick stainless steel plate. The invisible manhole cover with the above structure can be customized as a finished product. The manhole cover surface paving 13 on the invisible manhole cover 8 is the same as the sidewalk paving, and the modulus is consistent with the surrounding area, making the bridge deck beautiful and coordinated.
[0035] The brick-built water collection well 3 and the longitudinal drainage pipe 4 on the sidewalk are all provided with waterproof coatings: the inner wall of the brick-built water collection well 3 on the sidewalk is waterproofed with 3 layers of waterproof coatings, and the interfaces of each drainage pipe are sealed with waterproof sealant. Please refer to Figures 6 to 8 to prevent rainwater leakage from affecting the main structure of the bridge.
[0036] The construction process of the above-mentioned bridge deck drainage system includes but is not limited to the following steps:
[0037] a) In conjunction with the construction of the bridge deck concrete pavement 20, the bridge deck water collection well 1 is installed, and the longitudinal drainage pipe 4 is positioned.
[0038] b) After the construction of the bridge deck concrete paving 20 is completed, when constructing the sidewalk curb 5, horizontally embed the drain pipe 2 at the bottom level connecting the bridge deck catch basin 1 and the brick-built catch basin 3 on the sidewalk in advance.
[0039] c) The brick-built catch basin 3 on the sidewalk is constructed synchronously with the sidewalk curb 5.
[0040] d) After the construction of the bridge deck concrete paving 20 and the sidewalk curb 5 is completed, place the longitudinal drain pipe 4 at the reserved position on the bridge deck and apply the corresponding waterproof coating.
[0041] e) Do a good job in the internal waterproofing of the brick-built catch basin 3 on the sidewalk and seal the connections between each drain pipe and the catch basin.
[0042] f) Complete the construction of other bridge deck accessory works.
[0043] Although the content of the present utility model has been introduced in detail through the above preferred embodiments, it should be recognized that the above description should not be considered as a limitation to the present utility model. After those skilled in the art have read the above content, various modifications and substitutions to the present utility model will be obvious. Therefore, the protection scope of the present utility model should be defined by the appended claims.
Claims
1. A cross-river municipal bridge deck drainage system, comprising a bridge deck sump (1), a horizontally laid drain pipe with a flat bottom (2), a brick sump for the sidewalk (3), and a longitudinal drain pipe (4), characterized in that, The bridge deck catch basin (1) is located at the low point of the cross slope of the bridge deck outside the sidewalk curb (5), and is arranged at certain intervals longitudinally along the bridge; several longitudinal brick-lined catch basins (3) for the sidewalk are provided inside the sidewalk curb (5) at the corresponding position of the bridge deck catch basin (1); the bridge deck catch basin (1) is connected to the longitudinal brick-lined catch basins (3) for the sidewalk through a horizontally laid drain pipe (2) with a flat bottom, and the several longitudinal brick-lined catch basins (3) for the sidewalk are connected through a longitudinal drain pipe (4) at the bottom of the longitudinal brick-lined catch basins (3) for the sidewalk.
2. The cross-river municipal bridge deck drainage system according to claim 1, characterized in that, The bridge deck catch basin (1) is made of cast iron or steel.
3. The cross-river municipal bridge deck drainage system according to claim 1, characterized in that The bridge deck catch basins (1) are arranged at intervals of 10 - 15 m longitudinally along the bridge.
4. The cross-river municipal bridge deck drainage system according to claim 1, characterized in that, The longitudinal drain pipe (4) is made of PVC.
5. The cross-river municipal bridge deck drainage system according to claim 1, characterized in that, The diameter of the longitudinal drain pipe (4) is 200 - 250 mm.
6. The cross-river municipal bridge deck drainage system according to claim 1, characterized in that, The horizontally laid drain pipe (2) with a flat bottom is made of steel.
7. The cross-river municipal bridge deck drainage system according to claim 1, characterized in that, A waterproof coating is provided within the scope of the longitudinal brick-lined catch basins (3) for the sidewalk and the longitudinal drain pipe (4).
8. The cross-river municipal bridge deck drainage system according to claim 1, characterized in that, The clear width of the longitudinal brick-lined catch basins (3) for the sidewalk is 500 - 700 mm.
9. The cross-river municipal bridge deck drainage system according to claim 1, characterized in that, Vertical drain pipes are provided at the shore piers within the scope of the longitudinal brick-lined catch basins (3) for the sidewalk, and municipal pipelines are arranged at the remaining positions under the sidewalk.
10. The cross-river municipal bridge deck drainage system according to claim 1, characterized in that, The cover plate above the longitudinal brick-lined catch basins (3) for the sidewalk is an invisible manhole cover (8), the invisible manhole cover is quadrilateral, including a manhole cover outer frame (14) and a manhole cover inner frame (15), with a reinforcing steel mesh (18) and a bottom plate (17) below it in the middle, and steel lifting lugs (16) and steel sealing ends (19) are provided at the four corners inside the manhole cover outer frame (14) and the manhole cover inner frame (15).
11. A cross-river municipal bridge deck drainage system according to claim 10, characterized in that, The paving (13) on the surface of the invisible manhole cover (8) is the same as the sidewalk paving.
12. A cross-river municipal bridge deck drainage system according to claim 10, characterized in that, Both the manhole cover outer frame (14) and the manhole cover inner frame (15) are made of stainless steel angle steel, and the bottom plate (17), the steel lifting lugs (16) and the steel sealing ends (19) are all made of stainless steel plates.