CN216108129U - Scaffold support foundation structure for river-crossing bridge construction - Google Patents
Scaffold support foundation structure for river-crossing bridge construction Download PDFInfo
- Publication number
- CN216108129U CN216108129U CN202122744238.3U CN202122744238U CN216108129U CN 216108129 U CN216108129 U CN 216108129U CN 202122744238 U CN202122744238 U CN 202122744238U CN 216108129 U CN216108129 U CN 216108129U
- Authority
- CN
- China
- Prior art keywords
- river
- abutment
- support
- bridge construction
- foundation structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Foundations (AREA)
Abstract
The utility model discloses a scaffold support foundation structure for river-crossing bridge construction, and belongs to the technical field of bridge construction. This structure includes abutment A and abutment B, abutment B and abutment A arrange the both sides in the river course, be equipped with the support basis between abutment B and the abutment A, and the support basis spans the river course, it is equipped with the drain pipe to run through along the river course flow direction on the support basis. The support foundation is constructed by constructing the riverbed bottom, so that the bearing capacity of the riverbed bottom is improved, and the load requirement of the full-scale support is further met. The cross section of the block stone support body is in an isosceles trapezoid shape, a concrete layer is poured on the top surface, and construction is convenient and rapid. The water is discharged through the cement pipes, so that the situation that the bearing capacity of the foundation is reduced, the ground is unevenly sunk and the like due to the fact that the foundation is soaked by river water for a long time is avoided.
Description
Technical Field
The utility model relates to a scaffold support foundation structure for river-crossing bridge construction, and belongs to the technical field of bridge construction.
Background
The total length of the Longmu river 3# bridge is 40m, the span is 30 m, and cast-in-place construction is planned by adopting a full-hall support method. According to the geological data of the region, the bridge region has no fracture structure to pass through. According to the ground survey and the exploration of geological survey data, adverse geological phenomena such as landslide, dangerous rocks, collapse, debris flow, goaf and the like do not exist in and near the field except for slight development of karst. The left bank of the dragon mother river is a natural soil slope, a part of land is dry-laid with a rock block retaining wall, the right bank is a natural soil slope, and pebble soil, local deposited silt and silty clay are distributed at the bottom of the river bed. As the foundation soil of the river bed has silty clay and local deposited silt, the bearing capacity of the foundation soil can not meet the load requirement of the full-scale support.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a scaffold support foundation structure for river-crossing bridge construction.
The utility model is realized by the following technical scheme:
the utility model provides a cross river bridge construction with scaffold frame foundation structure, includes abutment A and abutment B, abutment B and abutment A arrange the both sides in the river course, be equipped with the support basis between abutment B and the abutment A, and the support basis spanes the river course, it is equipped with the drain pipe to run through along the river course flow direction on the support basis.
The height of the top surface of the bearing platform of the bridge platform B is larger than that of the top surface of the bearing platform of the bridge platform A, and the height of the top surface of the support foundation is consistent with that of the top surface of the bearing platform of the bridge platform B.
The support foundation comprises a block stone support body and a concrete layer arranged on the block stone support body.
The cross section of the block stone support body is in an isosceles trapezoid shape.
The slope of the front side and the rear side of the block stone supporting body is 1: 1.
The filling height of the block stone support body is not less than 2 m.
And the block stone support bodies are filled layer by layer, and the thickness of each layer is not more than 50 cm.
The particle size of each layer of filler in the stone support is not greater than 2/3 of the layer thickness.
The thickness of the concrete layer is 30cm, and the concrete strength grade is C20.
The drain pipe is a cement pipe, the embedded elevation of the drain pipe is consistent with the elevation of a riverbed, the embedded length is not less than 19m, and one end of the drain pipe extends into the upstream diversion channel.
The utility model has the beneficial effects that: the support foundation is constructed by constructing the riverbed bottom, so that the bearing capacity of the riverbed bottom is improved, and the load requirement of the full-scale support is further met. The cross section of the block stone support body is in an isosceles trapezoid shape, a concrete layer is poured on the top surface, and construction is convenient and rapid. The water is discharged through the cement pipes, so that the situation that the bearing capacity of the foundation is reduced, the ground is unevenly sunk and the like due to the fact that the foundation is soaked by river water for a long time is avoided.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural diagram of the support base of the present invention.
In the figure: 1-bridge abutment A, 2-drain pipe, 3-support foundation, 30-block stone support body, 31-concrete layer and 4-bridge abutment B.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
As shown in fig. 1 and 2, the scaffold frame foundation structure for river-crossing bridge construction comprises a bridge abutment a1 and a bridge abutment B4, wherein the bridge abutment B4 and the bridge abutment a1 are arranged on two sides of a river channel, a frame foundation 3 is arranged between the bridge abutment B4 and the bridge abutment a1, the frame foundation 3 crosses the river channel, and a drain pipe 2 is installed on the frame foundation 3 in a penetrating manner along the flow direction of the river channel.
The height of the top surface of the bearing platform of the abutment B4 is greater than that of the top surface of the bearing platform of the abutment A1, and the height of the top surface of the support foundation 3 is consistent with that of the top surface of the bearing platform of the abutment B4.
The support foundation 3 includes a block stone support 30 and a concrete layer 31 provided on the block stone support 30.
The cross section of the block stone supporting body 30 is in an isosceles trapezoid shape.
The slope of the front and rear sides of the stone block support 30 is 1: 1.
The filling height of the stone block support 30 is not less than 2 m.
The block stone supports 30 are filled in layers, and the thickness of each layer is not more than 50 cm.
The particle size of each layer of filler in the monolith support 30 is no greater than 2/3 for the layer thickness.
The thickness of the concrete layer 31 is 30cm, and the strength grade of the concrete is C20.
The drain pipe 2 is a cement pipe, the embedded elevation of the drain pipe is consistent with the elevation of a riverbed, the embedded length is not less than 19m, and one end of the drain pipe 2 extends into the upstream diversion channel. When the water-saving device is used, water is drained through the cement pipes, so that the situation that the bearing capacity of the foundation is reduced, the ground sinks unevenly and the like due to the fact that the foundation is soaked by river water for a long time is avoided.
The utility model relates to a scaffold support foundation structure for river-crossing bridge construction, which mainly comprises the following construction processes:
excavating a bridge abutment A1 and a bridge abutment B4 foundation, and excavating unfavorable soil such as powdery clay and deposited sludge at the bottom of a river bed; the construction of the abutment A1 and the abutment B4 bearing platform is completed, the block stone support body 30 is filled in layers, the thickness of each layer is not more than 50cm, the particle size of the filler is not more than 2/3, the minimum position of the block stone filling height is not less than 2.0 m, a cement pipe is buried in the process of filling the block stone support body 30, two sides and the top of the cement pipe are tamped by a tamping machine, a diversion channel is built by sand bags along a river channel in the range from a water flow inlet of the cement pipe to 10 m upstream of the water flow, and the water flow is prevented from directly scouring the support foundation 3; the bearing capacity of the support foundation 3 is detected by adopting a light dynamic sounding detection mode, and the next procedure can be carried out after the detection is qualified; and pouring the concrete layer 31 to be consistent with the height of the top surface of the bearing platform of the bridge abutment B4. And (5) building a full support, starting bridge construction and the like.
After bridge construction is completed and the full framing is removed, the processing support foundation 3 is restored to the original river width and the original river bed elevation.
The scaffold support foundation structure for river-crossing bridge construction provided by the utility model has the advantages that the support foundation 3 is constructed at the bottom of the river bed, so that the bearing capacity of the river bed bottom is improved, and the load requirement of the full-scale support is further met. The cross section of the block stone support body 30 is in an isosceles trapezoid shape, the concrete layer 31 is poured on the top surface, and construction is convenient and fast. The water is discharged through the cement pipes, so that the situation that the bearing capacity of the foundation is reduced, the ground is unevenly sunk and the like due to the fact that the foundation is soaked by river water for a long time is avoided.
Claims (10)
1. The utility model provides a cross river scaffold puts up foundation structure for bridge construction which characterized in that: including abutment A (1) and abutment B (4), abutment B (4) and abutment A (1) are arranged in the both sides of river course, be equipped with support basis (3) between abutment B (4) and abutment A (1), and support basis (3) span the river course, it is equipped with drain pipe (2) to run through along the river course flow direction on support basis (3).
2. The scaffold frame foundation structure for river-crossing bridge construction of claim 1, wherein: the height of the top surface of the bearing platform of the bridge abutment B (4) is larger than that of the top surface of the bearing platform of the bridge abutment A (1), and the height of the top surface of the support foundation (3) is consistent with that of the top surface of the bearing platform of the bridge abutment B (4).
3. The scaffold frame foundation structure for river-crossing bridge construction of claim 1, wherein: the support foundation (3) comprises a block stone support body (30) and a concrete layer (31) arranged on the block stone support body (30).
4. The scaffold frame foundation structure for river-crossing bridge construction of claim 3, wherein: the cross section of the block stone support body (30) is in an isosceles trapezoid shape.
5. The scaffold frame foundation structure for river-crossing bridge construction of claim 4, wherein: the slope of the front side and the rear side of the block stone supporting body (30) is 1: 1.
6. The scaffold frame foundation structure for river-crossing bridge construction of claim 3, wherein: the filling height of the block stone support body (30) is not less than 2 m.
7. The scaffold frame foundation structure for river-crossing bridge construction of claim 3, wherein: the block stone support body (30) is filled in layers, and the thickness of each layer is not more than 50 cm.
8. The scaffold frame foundation structure for river-crossing bridge construction of claim 7, wherein: the particle size of each layer of filler in the stone support (30) is not greater than 2/3 of the layer thickness.
9. The scaffold frame foundation structure for river-crossing bridge construction of claim 3, wherein: the thickness of the concrete layer (31) is 30cm, and the strength grade of the concrete is C20.
10. The scaffold frame foundation structure for river-crossing bridge construction of claim 1, wherein: the water discharge pipe (2) is a cement pipe, the buried elevation of the water discharge pipe is consistent with the elevation of a river bed, the buried length is not less than 19m, and one end of the water discharge pipe (2) extends into the upstream diversion channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122744238.3U CN216108129U (en) | 2021-11-10 | 2021-11-10 | Scaffold support foundation structure for river-crossing bridge construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122744238.3U CN216108129U (en) | 2021-11-10 | 2021-11-10 | Scaffold support foundation structure for river-crossing bridge construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216108129U true CN216108129U (en) | 2022-03-22 |
Family
ID=80715181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122744238.3U Active CN216108129U (en) | 2021-11-10 | 2021-11-10 | Scaffold support foundation structure for river-crossing bridge construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216108129U (en) |
-
2021
- 2021-11-10 CN CN202122744238.3U patent/CN216108129U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102966119B (en) | Geogrid reinforced wall and construction method thereof | |
| CN103046565B (en) | Draining method for ultra-deep batholith deep foundation pit | |
| CN102635124A (en) | Construction method aiming to large open caisson in weak soil area | |
| CN110080169B (en) | Construction method for building land by enclosing sea based on basement utilization | |
| CN212866028U (en) | River course limit sewage pipe network combines sheet-like barricade arrangement structure of stake | |
| CN101597888B (en) | Construction method of municipal drainage culvert sinking trough | |
| CN109750571A (en) | A kind of road landslide emergency and permanent supporting and retaining system integral structure and construction method | |
| CN107090842A (en) | A kind of processing method of the big thickness collapsible loess foundation in subway station | |
| CN115653000A (en) | Gravity pipe gallery in-situ protection structure system in foundation pit range and construction method | |
| CN103334450B (en) | Construction method of pile precast slab retaining wall with drainage ditch | |
| CN109208545B (en) | Construction method of artificial landscape overflow dam with energy dissipation effect | |
| CN102493485B (en) | Method for building slope protection retaining wall during filling | |
| CN109898556A (en) | A kind of underground pipe gallery structure and sunk type construction method | |
| CN216108129U (en) | Scaffold support foundation structure for river-crossing bridge construction | |
| CN112144425B (en) | Box culvert drainage ditch pouring method located at high water level and in sandy soil environment | |
| CN210151776U (en) | Structure of balance weight type retaining wall | |
| CN209816896U (en) | Collapsible loess area utility tunnel foundation structure | |
| CN111794183A (en) | Shallow-buried underground tunnel top riverbed bottom reinforcing structure and method | |
| CN112176945A (en) | Construction method for moving back dike to sea | |
| CN213539046U (en) | Retaining wall reverse filtering drainage structure | |
| CN220486172U (en) | Reinforcing structure suitable for mountain area highway bank section disaster damage roadbed | |
| CN221001020U (en) | Pit-in-pit waterproof structure | |
| CN217419689U (en) | Soil body high slope outer buttress formula barricade anchor rope reinforced structure | |
| CN217760383U (en) | Enclosure structure arranged on slope support | |
| CN211228524U (en) | Silt geological formation foundation pit and composite bottom sealing structure thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |