Bridge abutment drainage structure suitable for walking path under bridge
By setting up a combined structure of the back filter layer, water collection tank, horizontal drainage pipe and vertical drainage pipe under the abutment, the drainage problem of the abutment body and the problems of subsidence and vehicle jump caused by water accumulation behind the platform are solved, and the abutment is improved The safety and walking trail function are low in construction and highly adaptable.
Patent Information
- Application Number
- CN202421448344.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-24
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-06-24
AI Technical Summary
When the existing abutment drainage structure is set up under the bridge, water accumulation behind the platform will affect the internal friction angle and adhesion force of the filling material, increase the active soil pressure, and the water stains and stains in the drainage holes will be severe, affecting the Abutment safety and trail function.
The structural design includes a reverse filter layer, a water collection tank, a geotextile, a transverse drain pipe and a vertical drain pipe. The filtration of the reverse filter layer in the water collection tank, the combination of the transverse drain pipe and a vertical drain pipe are adopted, and the drainage ditch is set up. Achieve effective drainage of the abutment body and reduce water accumulation and horizontal pressure behind the stage.
It effectively solves the problem of drainage on the abutment body, reduces the problem of subsidence and vehicle jumping caused by water accumulation behind the taiwan, improves the safety of the abutment, does not affect the function of the walking trail, and is convenient to construct and highly adaptable.
Smart Images
Figure CN222349487U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a bridge abutment drainage structure suitable for a walking path under the bridge. Background Art
[0002] When a walking trail is set up under a municipal bridge, the height of the thin-walled abutment is generally high, and the backfill material behind the abutment is more or less in a water-containing state. When the water reaches saturation or close to saturation, it will affect the internal friction angle and cohesion of the backfill material, increase the active earth pressure, and be very unfavorable to the abutment body. In order to reduce or lower this adverse effect, an internal drainage method should be adopted. However, thin-walled abutments are generally in the form of reinforced concrete, and the abutment body size is small. The pressure behind the abutment has a greater impact on the abutment body size, so the drainage method through the abutment body should be considered as the key consideration.
[0003] The existing drainage method for the abutment body is to set up drainage holes directly through the abutment body. The anti-filtration measures at the drainage outlet behind the abutment are not in place, resulting in serious water stains and dirt at the drainage holes on the abutment body on one side of the walking trail. Even after rainfall, a large amount of water may spray out of the drainage holes, seriously affecting the function of the walking trail. Utility Model Content
[0004] The purpose of the utility model is to overcome the above-mentioned deficiencies in the prior art and to provide a drainage structure for an abutment with a walking trail under the bridge with a reasonable structural design, which can effectively remove the water accumulated in the filling material behind the abutment, reduce the horizontal pressure behind the abutment and improve the safety of the abutment, alleviate the sinking of the filling material behind the abutment caused by water accumulation and the problem of vehicle jumping at the bridge head, without affecting the function of the walking trail.
[0005] The technical solution adopted by the utility model to solve the above-mentioned problems is: a bridge abutment drainage structure suitable for a walking trail under the bridge, comprising a walking trail, an abutment body and an abutment cap; the abutment body is fixed on the abutment cap, and the walking trail is paved on the abutment cap; it is characterized in that it also includes an inverted filter layer, a water collecting trough, a geotextile, a horizontal drainage pipe, a vertical drainage pipe and a drainage ditch; the water collecting trough is fixedly arranged on the back of the abutment body, and an inverted filter layer is arranged in the water collecting trough; the horizontal drainage pipe is horizontally pre-buried in the abutment body, and its inlet is connected with the water collecting trough; the geotextile is fixed on the back of the abutment body and seals the inlet of the horizontal drainage pipe; the vertical drainage pipe is vertically pre-buried in the front of the abutment body, and its inlet is connected with the outlet of the horizontal drainage pipe; the drainage ditch is fixed on the abutment cap and is located at the junction of the abutment body and the abutment cap, and the outlet of the vertical drainage pipe is connected with the drainage ditch.
[0006] The water collecting trough of the utility model is made of clay.
[0007] The reverse filter layer of the utility model is composed of graded crushed stones.
[0008] The transverse drainage pipe of the utility model is arranged obliquely, and its inlet is higher than the outlet.
[0009] The horizontal drainage pipe described in the utility model adopts a PVC round pipe.
[0010] The geotextile described in the utility model is a polyester staple fiber needle-punched geotextile.
[0011] The utility model has concrete-like topcoat painted on the exposed surface of the vertical drainage pipe.
[0012] The vertical drainage pipe described in the utility model adopts a PVC square pipe.
[0013] The drainage ditch described in the utility model is shallow butterfly-shaped.
[0014] The drainage ditch of the utility model is arranged along the walking trail.
[0015] Compared with the prior art, the utility model has the following advantages and effects:
[0016] 1) By combining filtered horizontal drainage with vertical drainage, the practical problems of difficult drainage of the platform and serious impact on the downstream walkway of the bridge after drainage are well solved. This technical solution is easy to construct and has mature technology.
[0017] 2) The construction difficulty is low and the adaptability is strong. It can effectively solve the practical problems of thin-walled abutments when setting up walking trails under the bridge, such as the increase in active pressure caused by water accumulation behind the abutments, which has an adverse effect on the thin abutment body, and the settlement of the soil behind the abutments causing the abutment to jump out of the bridge, etc. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] FIG1 is a schematic cross-sectional view of an embodiment of the present utility model.
[0019] FIG. 2 is a schematic diagram of the planar structure of an embodiment of the utility model.
[0020] FIG. 3 is a schematic diagram of the front structure of an embodiment of the utility model. DETAILED DESCRIPTION
[0021] The present invention will be further described in detail below with reference to the accompanying drawings and through examples. The following examples are provided to explain the present invention, but the present invention is not limited to the following examples.
[0022] The embodiment of the utility model comprises an inverted filter layer 1, a water collection tank 2, a geotextile 3, a horizontal drainage pipe 4, a vertical drainage pipe 5, an imitation concrete topcoat 6, a drainage ditch 7, a walking trail 8, a bridge abutment body 9 and a bridge abutment cap 10.
[0023] The abutment body 9 is fixed on the abutment cap 10. The walking trail 8 is paved on the abutment cap 10.
[0024] The water collection tank 2 is fixedly arranged on the back of the abutment body 9, and the water collection tank 2 is made of clay soil. An inverted filter layer 1 is arranged in the water collection tank 2, and the inverted filter layer 1 is made of graded crushed stone. The thickness of the water collection tank 2 is 30 cm.
[0025] The transverse drainage pipe 4 is pre-buried in the abutment body 9, and its inlet is connected to the water collection tank 2. The transverse drainage pipe 4 is inclined, and its inlet is higher than the outlet, which is convenient for drainage. The inclination slope is 5%, which is convenient for drainage. The range of the filter layer 1 is 50cm around the periphery of the transverse drainage pipe 4, and the range of the water collection tank 2 is 75cm around the periphery of the transverse drainage pipe 4. The transverse drainage pipe 4 adopts a PVC round pipe with a pipe diameter of 10cm.
[0026] The geotextile 3 is pasted and fixed on the back of the abutment body 9 and seals the inlet of the transverse drainage pipe 4. The geotextile 3 is a polyester staple fiber needle-punched geotextile.
[0027] The vertical drainage pipe 5 is vertically pre-buried in the front of the abutment body 9, and its inlet is connected to the outlet of the horizontal drainage pipe 4. The exposed surface of the vertical drainage pipe 5 is painted with an imitation concrete topcoat 6. The vertical drainage pipe 5 adopts a PVC square pipe with a size of 20×10 cm.
[0028] The drainage ditch 7 is fixed on the abutment cap 10 and is located at the junction of the abutment body 9 and the abutment cap 10, and the outlet of the vertical drainage pipe 5 is connected to the drainage ditch 7. The drainage ditch 7 is a shallow butterfly shape and is set along the walking trail 8. The drainage ditch 7 is made of concrete.
[0029] The accumulated water behind the abutment 9 enters the sump 2, is filtered through the filter layer 1, and finally discharged into the drainage ditch 7 from the horizontal and vertical drainage pipes, and then discharged longitudinally along the walking trail 8, thus effectively solving the practical problems of the difficulty in draining the abutment body and the serious impact on the walking trail downstream of the bridge after drainage.
[0030] In addition, it should be noted that the shapes and names of the parts and components of the specific embodiments described in this specification may be different, and the above content described in this specification is only an example of the structure of the utility model. All equivalent changes or simple changes made based on the structure, features and principles described in the patent concept of the utility model are included in the protection scope of the utility model patent. Technicians in the technical field of the utility model can make various modifications or supplements to the specific embodiments described or replace them in a similar manner, as long as they do not deviate from the structure of the utility model or exceed the scope defined by the claims, they should all fall within the protection scope of the utility model.
Claims
1. A bridge abutment drainage structure suitable for a bridge with a walking path under the bridge, comprising the walking path, an abutment body and an abutment cap; the abutment body is fixed on the abutment cap, and the walking path is paved on the abutment cap; the characteristics are: It also includes an inverted filter layer, a water collection trough, a geotextile, a transverse drainage pipe, a vertical drainage pipe and a drainage ditch; the water collection trough is fixedly arranged on the back of the abutment body, and an inverted filter layer is arranged in the water collection trough; the transverse drainage pipe is horizontally pre-buried in the abutment body, and its inlet is connected with the water collection trough; the geotextile is fixed on the back of the abutment body and seals the inlet of the transverse drainage pipe; the vertical drainage pipe is vertically pre-buried in the front of the abutment body, and its inlet is connected with the outlet of the transverse drainage pipe; the drainage ditch is fixed on the abutment cap and is located at the junction of the abutment body and the abutment cap, and the outlet of the vertical drainage pipe is connected with the drainage ditch.
2. The abutment drainage structure suitable for a bridge with a walking path under the bridge according to claim 1 is characterized in that: The water collection tank is made of clay.
3. The abutment drainage structure applicable to a bridge with a walking path under the bridge according to claim 1 is characterized in that: The inverted filter layer is made of graded crushed stone.
4. The abutment drainage structure applicable to a bridge with a walking path under the bridge according to claim 1 is characterized in that: The transverse drainage pipe is arranged obliquely, and its inlet is higher than its outlet.
5. The abutment drainage structure applicable to a bridge with a walking path under the bridge according to claim 1 is characterized in that: The horizontal drainage pipe is a PVC round pipe.
6. The abutment drainage structure applicable to a bridge with a walking path under the bridge according to claim 1 is characterized in that: The geotextile is a polyester staple fiber needle-punched geotextile.
7. The abutment drainage structure applicable to a bridge with a walking path under the bridge according to claim 1 is characterized in that: The exposed surface of the vertical drain pipe is painted with imitation concrete topcoat.
8. The abutment drainage structure applicable to a bridge with a walking path under the bridge according to claim 1 is characterized in that: The vertical drainage pipe is a PVC square pipe.
9. The abutment drainage structure applicable to a bridge with a walking path under the bridge according to claim 1 is characterized in that: The drainage ditch is in a shallow butterfly shape.
10. The abutment drainage structure applicable to a bridge with a walking path under the bridge according to claim 1, characterized in that: The drainage ditch is arranged along the walking trail.