CN114351746A - Pile foundation platform for river-approaching steep-dip bank slope in mountainous area and construction method - Google Patents
Pile foundation platform for river-approaching steep-dip bank slope in mountainous area and construction method Download PDFInfo
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- 238000010276 construction Methods 0.000 title claims abstract description 36
- 239000004575 stone Substances 0.000 claims abstract description 51
- 229910000831 Steel Inorganic materials 0.000 claims description 60
- 239000010959 steel Substances 0.000 claims description 60
- 239000011435 rock Substances 0.000 claims description 27
- 238000005553 drilling Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 14
- 239000004927 clay Substances 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 238000004140 cleaning Methods 0.000 claims description 9
- 239000003973 paint Substances 0.000 claims description 6
- 101100366060 Caenorhabditis elegans snap-29 gene Proteins 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 239000004746 geotextile Substances 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 230000002265 prevention Effects 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 3
- 238000009412 basement excavation Methods 0.000 description 3
- 239000011449 brick Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
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Abstract
The invention provides a pile foundation platform of a mountain region river-approaching steep bank slope and a construction method, wherein the pile foundation platform comprises a pile foundation, the pile foundation is positioned on the mountain region river-approaching steep bank slope, and a sheet stone concrete retaining wall is arranged at the tops of the pile foundation and the mountain region river-approaching steep bank slope; and a bearing platform is fixed at the top of the slab concrete retaining wall. The construction of the pile foundation on the riverside bank slope can be realized, and the construction quality and the personnel safety are ensured.
Description
Technical Field
The invention belongs to the technical field of bridge pile foundation construction, and particularly relates to a mountainous region river-approaching steep-dip bank slope pile foundation platform and a construction method.
Background
With the leap development of bridge design and construction technology in China, more and more bridges are erected among mountains. In mountain areas, special structural bridges (continuous beams, rigid frame bridges, arch bridges, cable-stayed bridges, arch bridges and the like) are usually adopted to span large valleys and rivers, and the main span of the bridge is shortened as much as possible in order to reduce the construction cost. The main pier foundation is located on the steep bank slope close to the river bank, and great difficulty is brought to construction organization and safety management.
In general, in a steep slope section of a mountain area, a commonly adopted pile foundation construction method is manual layer-by-layer excavation and layer-by-layer dado pore-forming. The operating personnel must be in narrow space operation, and factor safety risk such as being influenced by ventilation, pore wall stability is high, and after the abrupt slope highway section pile foundation that closes on the river bank excavates to certain degree of depth, because rock mass crack and seepage flow influence the downthehole rivers of stake and go into the hole stake, the safety risk rises sharply. Construction can be continued after precipitation treatment measures are adopted. The manual hole digging is used for construction of a river-approaching steep-dip bank slope in a mountain area, cost is not saved, and safety risk is extremely high.
Disclosure of Invention
In view of the technical problems in the background art, the invention provides the pile foundation platform for the river-facing steep slope in the mountainous area and the construction method, which can ensure that the construction quality and the personnel safety are ensured when the pile foundation is constructed on the river-facing slope.
In order to achieve the technical features, the invention is realized as follows: a pile foundation platform of a mountain region river-approaching steep bank slope comprises a pile foundation, wherein the pile foundation is positioned above the mountain region river-approaching steep bank slope, and a stone concrete retaining wall is arranged at the tops of the pile foundation and the mountain region river-approaching steep bank slope; and a bearing platform is fixed at the top of the slab concrete retaining wall.
The range of the stone concrete retaining wall is A in the longitudinal outward expansion size of the area of the bearing platform, and B in the transverse outward expansion size.
The sheet-stone concrete retaining wall is excavated into steps with the inclination of 1:0.5 by adopting a sideline foundation, the original rock surface is excavated into the steps with the inclination of the inner part, and the water interception and drainage of the excavated area of the sheet-stone concrete retaining wall are well performed.
The stone concrete retaining wall is fixedly connected with the original rock surface by adopting a threaded steel bar.
And stone connecting stubbles are reserved on the formation layer surface between the stone concrete retaining walls.
The inside of piece stone concrete barricade is located pile foundation place position and is provided with the bricklaying walling crib, and the internal diameter of bricklaying walling crib is greater than the pile foundation diameter by 10cm, backfills clay in the well.
The top layer of piece stone concrete barricade is pre-buried all around has the steel pipe stand, and steel pipe stand not co-altitude department is fixed with logical long horizontal pole through the steel pipe fastener.
The construction method of the pile foundation platform of the river-approaching steep-dip bank slope in the mountainous area comprises the following steps:
the method comprises the following steps: firstly, building a main pier pile foundation construction access road;
step two: discharging a sideline of the bearing platform, extending the side of the bearing platform towards the water-facing side by a dimension A, carrying out slope surface cleaning and excavating broken stone slag and a mud layer within a transverse extension dimension B to expose a weathered rock surface, and meanwhile, arranging a catch basin at the top of the slope to lead the upper slope water flow out of the bearing platform;
step three: excavating a base groove at a sideline of the surface cleaning range, wherein the base groove is inwards inclined;
step four: excavating inward-inclined steps on the surface-cleaned original rock surface, drilling holes on the original rock surface, wherein the holes are arranged in a quincunx shape, the holes avoid the plane position of a pile foundation, and timely cleaning the holes after drilling is finished; processing the twisted steel into each section with equal length, inserting the twisted steel into the drill hole, and grouting in time;
step five: pouring concrete on the slope of the first bin of the foundation trench, and filling gaps in rocks with concrete;
step six: at least 50% of the top surface of the stone concrete in each bin is exposed out of the bin surface by 15-30cm to form a stone joint reserved on the layer surface of the next bin, and after pouring is finished, geotextile is covered in time for watering and maintenance;
step seven: subsequently, pouring the sheet-rock concrete retaining wall in each bin according to the set height H, when the pile foundation hole site is completely located on a certain pouring layer surface, releasing the pile hole site on the pouring layer surface, forming a brick-built walling crib by brick building according to the size requirement that the inner diameter is larger than the pile site, and backfilling clay in the brick-built walling crib;
step eight: pouring the stone concrete retaining wall layer by layer to the elevation of the pile top, and forming a drainage slope surface towards four sides by the smooth surface of the top surface of the bricked well ring along with the bricked well ring;
step nine: the construction platform is characterized in that steel pipe stand columns are embedded in the outer sides of the periphery of the top surface when the top surface is poured, a plurality of through long cross rods are arranged at different elevations of the steel pipe stand columns, the steel pipe stand columns are connected with the through long cross rods through steel pipe fasteners, and the steel pipe stand columns are painted with red-white paint alternately;
step ten: and driving the drilling machine into the platform, and starting the mechanical hole forming operation of the pile foundation.
In the first step, the width of the access way is at least 6m, a mud-bonded gravel road surface is adopted, and a drilling machine, a crane and a tank car can normally drive in; timely performing slope support and water prevention and drainage on the excavated slope;
in the second step, the value of A is 3m, and the value of B is 2 m;
in the third step, the base groove is inwards inclined by 1: 0.5;
in the fourth step, the original rock surface is excavated, the inward-inclined steps are 4%, holes with the diameter of 30mm are drilled on the slope surface, the hole depth is 500mm, and the distance between the holes is 75cm and 75 cm; the length of the twisted steel bar is 1 m/section, and the diameter is phi 28 mm;
and fifthly, the pouring height of the slope concrete of the first bin is 1.5m, the pouring layer thickness is controlled to be 30cm in the pouring process, and the rubbles are thrown in the pouring process and vibrated in time.
Setting the height H to be 1.5m in the seventh step;
in the ninth step, steel pipe columns with the diameter of 48 mm multiplied by 3.5mm are pre-buried on the outer sides of the periphery of the top surface, the buried depth of the steel pipe columns is 50cm, the steel pipe columns extend out of the platform surface by 120cm, the steel pipe columns are arranged at intervals of 200cm, 2 through long cross rods are arranged at the positions with the height of 60cm and the height of 120cm, the steel pipe columns and the through long cross rods are connected through steel pipe fasteners, and red and white paint is brushed on the steel pipe columns at intervals of 20 cm.
The invention has the following beneficial effects:
1. the method effectively solves the problem of pile foundation construction of the river-facing steep bank slope in the mountainous area, and compared with the traditional construction method of manually digging holes and cooperating with precipitation, the safety performance is greatly improved; compared with the method of erecting a steel platform, the method has remarkable economical efficiency.
2. The method adopts the twisted steel bars arranged on the original slope rock mass as anchor bars, and the measures of reserving the slab connection on the reserved surface of the top surface of each bin of slab concrete pouring effectively ensure the stability of the slope of the mountain and the overall stability of the newly-built slab concrete platform, and ensure the construction safety.
3. The invention adopts the steps of pre-manufacturing the bricked well ring and filling clay at the pile position, thereby providing guidance for pile foundation construction and ensuring the vertical degree of drilling; meanwhile, clay is filled and all the clay is built by the stone concrete, so that the engineering cost can be saved, and the drilling speed is accelerated.
4. The method can be widely applied to pile foundation construction of the river-facing steep bank slope in the mountainous area.
Drawings
The invention is further illustrated by the following figures and examples.
Fig. 1 is a schematic view of a pile foundation platform of a steep bank in a mountainous area.
Fig. 2 is a schematic diagram of the excavation edge line of the pile foundation platform.
FIG. 3 is a schematic structural view of the stone concrete retaining wall of the present invention poured to a certain height.
In the figure: bearing platform 1, brickwork walling crib 2, slice stone concrete barricade 3, pile foundation 4, original rock face 5, waterline 6, twisted steel 7, bedding face reserve slice stone stubble 8.
Detailed Description
Example 1:
referring to fig. 1-3, a pile foundation platform of a mountain region river-approaching steep bank slope comprises a pile foundation 4, wherein the pile foundation 4 is positioned on the mountain region river-approaching steep bank slope, and a stone concrete retaining wall 3 is arranged at the tops of the pile foundation 4 and the mountain region river-approaching steep bank slope; and a bearing platform 1 is fixed at the top of the sheet stone concrete retaining wall 3. Through foretell pile foundation platform can make and be under the construction of river bank slope pile foundation, construction quality, personnel's safety obtain guaranteeing.
Further, the range of the sheet-stone concrete retaining wall 3 is the longitudinal outward expansion size A of the area of the bearing platform 1, and the transverse outward expansion size is B. By adopting the above-mentioned enlarged size range, the stability and reliability of the finally supported bearing platform 1 are ensured.
Furthermore, the sheet-stone concrete retaining wall 3 is excavated into steps with the inclination of 1:0.5 by adopting a sideline foundation, the original rock surface is excavated into the steps with the inclination of the inner part, and the water interception and drainage of the excavated area of the sheet-stone concrete retaining wall 3 are well performed. The subsequent stability of slope construction is guaranteed through water interception and drainage, and the stability and reliability of the foundation are enhanced through the step with the inward inclination gradient of 1: 0.5.
Further, the stone concrete retaining wall 3 is fixedly connected with the original rock surface by adopting a threaded steel bar 7. The connection strength and stability between the sheet-stone concrete retaining wall 3 and the original rock surface are enhanced through the deformed steel bars 7.
Furthermore, a lamellar surface reserved stone connecting stubbles 8 are formed between the stone concrete retaining walls 3. By adopting the bedding surface reserved stone connecting 8, the stability of the slope surface of the mountain and the overall stability of the newly-built stone concrete platform are effectively guaranteed, and the construction safety is guaranteed.
Further, the inside of piece stone concrete barricade 3 is provided with bricklaying walling crib 2 and is located 4 positions of pile foundation, and the internal diameter of bricklaying walling crib 2 is 10cm greater than the pile foundation diameter, backfills clay in the well. Providing guidance for pile foundation construction by backfilling clay in the well, and ensuring the vertical degree of drilling; meanwhile, clay is filled and all the clay is built by the stone concrete, so that the engineering cost can be saved, and the drilling speed is accelerated.
Further, steel pipe stand columns are pre-buried around the top layer of the stone concrete retaining wall 3, and the steel pipe stand columns are fixed with through long cross rods at different heights through steel pipe fasteners. Through foretell steel pipe stand and lead to long horizontal pole fixed linking to each other, can form guardrail structure.
Example 2:
the construction method of the pile foundation platform of the river-approaching steep-dip bank slope in the mountainous area comprises the following steps:
the method comprises the following steps: firstly, building a main pier pile foundation construction access road;
step two: discharging a sideline of the bearing platform 1, extending the side of the bearing platform towards the water-facing side by a dimension A, performing slope surface cleaning and excavating broken stone slag and a mud layer within a transverse extension dimension B to expose a weathered rock surface, and meanwhile, arranging a catch basin at the top of the slope to lead the upper slope water flow out of the bearing platform;
step three: excavating a base groove at a sideline of the surface cleaning range, wherein the base groove is inwards inclined;
step four: excavating inward-inclined steps on the surface-cleaned original rock surface, drilling holes on the original rock surface, wherein the holes are arranged in a quincunx shape, the holes avoid the plane position of the pile foundation 4, and timely cleaning the holes after drilling is finished; processing the twisted steel 7 into each section with equal length, inserting the twisted steel 7 into the drill hole, and grouting in time;
step five: pouring concrete on the slope of the first bin of the foundation trench, and filling gaps in rocks with concrete;
step six: at least 50% of the top surface of the stone concrete in each bin is exposed out of the bin surface by 15-30cm to form a stone joint 8 on the layer surface of the next bin, and the geotextile is covered in time for watering and maintenance after pouring is finished;
step seven: subsequently, a stone concrete retaining wall 3 is poured in each bin according to the set height H, when the pile foundation hole site is completely located on a certain pouring layer surface, the pile hole site is released on the pouring layer surface, a brick-built walling crib 2 is formed by brick building according to the size requirement that the inner diameter is larger than the pile site, and clay is backfilled in the brick-built walling crib 2;
step eight: pouring the sheet-stone concrete retaining wall 3 layer by layer to the elevation of the pile top, and forming a drainage slope surface towards four sides by the top surface smooth-finishing surface of the bricked well ring 2 along with the bricking to the elevation of the pile top;
step nine: the construction platform is characterized in that steel pipe stand columns are embedded in the outer sides of the periphery of the top surface when the top surface is poured, a plurality of through long cross rods are arranged at different elevations of the steel pipe stand columns, the steel pipe stand columns are connected with the through long cross rods through steel pipe fasteners, and the steel pipe stand columns are painted with red-white paint alternately;
step ten: and driving the drilling machine into the platform, and starting the mechanical hole forming operation of the pile foundation.
Preferably, the width of the access way in the step one is at least 6m, a mud-bonded gravel road surface is adopted, and a drilling machine, a crane and a tank car can be ensured to normally drive in; timely performing slope support and water prevention and drainage on the excavated slope;
preferably, in the second step, the value of A is 3m, and the value of B is 2 m;
preferably, in the third step, the base groove inclines inwards by 1: 0.5;
preferably, the original rock face excavation inward-inclined step in the fourth step is 4%, holes with the diameter of 30mm are drilled on the slope, the hole depth is 500mm, and the distance is 75cm x 75 cm; the length of the twisted steel 7 is 1 m/section, and the diameter is phi 28 mm;
preferably, in the fifth step, the pouring height of the slope concrete of the first bin is 1.5m, the pouring layer thickness is controlled to be 30cm in the pouring process, and the rubbles are thrown in the pouring process and vibrated in time.
Preferably, the height H is set to 1.5m in the seventh step;
preferably, steel pipe columns with the diameter of 48 mm multiplied by 3.5mm are pre-buried on the outer sides of the periphery of the top surface in the ninth step, the steel pipe columns are buried with the depth of 50cm, extend out of the platform surface by 120cm and are arranged at the interval of 200cm, 2 through long cross rods are arranged at the positions with the height of 60cm and 120cm, the steel pipe columns and the through long cross rods are connected through steel pipe fasteners, and paint is brushed on the steel pipe columns in red and white intervals, wherein the interval of 20cm is formed.
Claims (10)
1. The utility model provides a mountain area is faced steep bank slope pile foundation platform which characterized in that: the river-approaching steep bank slope is characterized by comprising a pile foundation (4), wherein the pile foundation (4) is positioned above the river-approaching steep bank slope in the mountainous area, and a stone concrete retaining wall (3) is arranged at the tops of the pile foundation (4) and the river-approaching steep bank slope in the mountainous area; and a bearing platform (1) is fixed at the top of the stone concrete retaining wall (3).
2. The mountain area river-approaching steep bank slope pile foundation platform as claimed in claim 1, wherein: the range of the stone concrete retaining wall (3) is A in the longitudinal outward expansion size of the area of the bearing platform (1), and B in the transverse outward expansion size.
3. The mountain area river-approaching steep bank slope pile foundation platform as claimed in claim 1, wherein: the stone concrete retaining wall (3) is excavated into steps with the inclination of 1:0.5 by adopting a sideline foundation, the original rock surface is excavated into the steps with the inclination of the inner part, and the water interception and drainage of the excavated area of the stone concrete retaining wall (3) are well performed.
4. The mountain area river-approaching steep bank slope pile foundation platform as claimed in claim 1, wherein: the stone concrete retaining wall (3) is fixedly connected with the original rock surface by adopting a threaded steel bar (7).
5. The mountain area river-approaching steep bank slope pile foundation platform as claimed in claim 1, wherein: and a bedding face reserved stone connecting stubbles (8) are formed between the stone concrete retaining walls (3).
6. The mountain area river-approaching steep bank slope pile foundation platform as claimed in claim 1, wherein: the inside of piece stone concrete barricade (3) is located pile foundation (4) position and is provided with brickwork walling crib (2), and the internal diameter of brickwork walling crib (2) is 10cm greater than the pile foundation diameter, backfills clay in the well.
7. The mountain area river-approaching steep bank slope pile foundation platform as claimed in claim 1, wherein: the steel pipe stand is pre-buried around the top layer of piece stone concrete barricade (3), and steel pipe stand not co-altitude department is fixed with logical long horizontal pole through the steel pipe fastener.
8. The construction method of the pile foundation platform of the mountain region river-approaching steep bank slope, according to any one of claims 1 to 7, is characterized by comprising the following steps:
the method comprises the following steps: firstly, building a main pier pile foundation construction access road;
step two: discharging a sideline of the bearing platform (1), then extending the dimension A outwards towards the water-facing side of the bearing platform, carrying out slope surface cleaning and excavating broken stone slag and a mud layer within the range of the transverse extension dimension B, exposing a weathered rock surface, and meanwhile, arranging a water intercepting ditch at the top of the slope to lead the upper slope water flow out of the bearing platform;
step three: excavating a base groove at a sideline of the surface cleaning range, wherein the base groove is inwards inclined;
step four: excavating inward-inclined steps on the surface-cleaned original rock surface, drilling holes on the original rock surface, wherein the holes are arranged in a quincunx shape, the holes avoid the plane position of the pile foundation (4), and timely cleaning the holes after drilling; processing the twisted steel (7) into each section with equal length, inserting the twisted steel (7) into the drill hole, and grouting in time;
step five: pouring concrete on the slope of the first bin of the foundation trench, and filling gaps in rocks with concrete;
step six: at least 50% of the top surface of the stone concrete in each bin is exposed out of the bin surface by 15-30cm to form a stone joint (8) reserved on the layer surface of the next bin, and the geotextile is covered in time for watering and maintenance after pouring is finished;
step seven: subsequently, a sheet-rock concrete retaining wall (3) is poured in each bin according to the set height H, when the pile foundation hole site is completely located on a certain pouring layer surface, the pile hole site is released on the pouring layer surface, a bricklaying is used for forming a bricklaying walling (2) according to the size requirement that the inner diameter is larger than the pile site, and clay is backfilled in the bricklaying walling (2);
step eight: pouring the stone concrete retaining wall (3) layer by layer to the elevation of the pile top, and forming a drainage slope surface towards four sides by the smooth surface of the top surface of the bricked well ring (2) along with the bricked well ring to the elevation of the pile top;
step nine: the construction platform is characterized in that steel pipe stand columns are embedded in the outer sides of the periphery of the top surface when the top surface is poured, a plurality of through long cross rods are arranged at different elevations of the steel pipe stand columns, the steel pipe stand columns are connected with the through long cross rods through steel pipe fasteners, and the steel pipe stand columns are painted with red-white paint alternately;
step ten: and driving the drilling machine into the platform, and starting the mechanical hole forming operation of the pile foundation.
9. The mountain region river-approaching steep bank slope pile foundation platform and the construction method thereof according to claim 1, wherein: in the first step, the width of the access way is at least 6m, a mud-bonded gravel road surface is adopted, and a drilling machine, a crane and a tank car can normally drive in; timely performing slope support and water prevention and drainage on the excavated slope;
in the second step, the value of A is 3m, and the value of B is 2 m;
in the third step, the base groove is inwards inclined by 1: 0.5;
in the fourth step, the original rock surface is excavated, the inward-inclined steps are 4%, holes with the diameter of 30mm are drilled on the slope surface, the hole depth is 500mm, and the distance between the holes is 75cm and 75 cm; the length of the twisted steel bar (7) is 1 m/section, and the diameter is phi 28 mm;
and fifthly, the pouring height of the slope concrete of the first bin is 1.5m, the pouring layer thickness is controlled to be 30cm in the pouring process, and the rubbles are thrown in the pouring process and vibrated in time.
10. The mountain region river-approaching steep bank slope pile foundation platform and the construction method thereof according to claim 1, wherein: setting the height H to be 1.5m in the seventh step;
in the ninth step, steel pipe columns with the diameter of 48 mm multiplied by 3.5mm are pre-buried on the outer sides of the periphery of the top surface, the buried depth of the steel pipe columns is 50cm, the steel pipe columns extend out of the platform surface by 120cm, the steel pipe columns are arranged at intervals of 200cm, 2 through long cross rods are arranged at the positions with the height of 60cm and the height of 120cm, the steel pipe columns and the through long cross rods are connected through steel pipe fasteners, and red and white paint is brushed on the steel pipe columns at intervals of 20 cm.
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| CN202111414504.4A CN114351746B (en) | 2021-11-25 | 2021-11-25 | Mountain area river-following steep bank slope pile foundation platform and construction method |
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| CN202111414504.4A CN114351746B (en) | 2021-11-25 | 2021-11-25 | Mountain area river-following steep bank slope pile foundation platform and construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2002275907A (en) * | 2001-03-16 | 2002-09-25 | Toyo Constr Co Ltd | Stabilization construction method for slope |
| US20180002885A1 (en) * | 2016-07-04 | 2018-01-04 | PoweChina Huadong Engineering Corporation Limited | Rock anchor foundation structure suitable for mountain photovoltaic module and construction method of rock anchor foundation structure |
| CN108755698A (en) * | 2018-05-25 | 2018-11-06 | 中铁建大桥工程局集团第工程有限公司 | A kind of big inclined rock base foundation construction method of abrupt slope incompact-deposit bodies |
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| WO2021109144A1 (en) * | 2019-12-06 | 2021-06-10 | 邹胜斌 | Modular intelligent dado cast-in-place pile and construction process therefor |
| CN214530750U (en) * | 2021-06-04 | 2021-10-29 | 中铁十七局集团有限公司 | Bridge pile foundation structure suitable for rock mass abrupt slope |
| CN216640647U (en) * | 2021-11-25 | 2022-05-31 | 中国葛洲坝集团路桥工程有限公司 | Mountain area is faced river steep bank slope pile foundation platform |
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2021
- 2021-11-25 CN CN202111414504.4A patent/CN114351746B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002275907A (en) * | 2001-03-16 | 2002-09-25 | Toyo Constr Co Ltd | Stabilization construction method for slope |
| US20180002885A1 (en) * | 2016-07-04 | 2018-01-04 | PoweChina Huadong Engineering Corporation Limited | Rock anchor foundation structure suitable for mountain photovoltaic module and construction method of rock anchor foundation structure |
| CN108755698A (en) * | 2018-05-25 | 2018-11-06 | 中铁建大桥工程局集团第工程有限公司 | A kind of big inclined rock base foundation construction method of abrupt slope incompact-deposit bodies |
| WO2021109144A1 (en) * | 2019-12-06 | 2021-06-10 | 邹胜斌 | Modular intelligent dado cast-in-place pile and construction process therefor |
| CN111779014A (en) * | 2020-06-30 | 2020-10-16 | 中铁二院工程集团有限责任公司 | High bearing platform enclosure structure of riverside steep slope bridge and construction method |
| CN214530750U (en) * | 2021-06-04 | 2021-10-29 | 中铁十七局集团有限公司 | Bridge pile foundation structure suitable for rock mass abrupt slope |
| CN216640647U (en) * | 2021-11-25 | 2022-05-31 | 中国葛洲坝集团路桥工程有限公司 | Mountain area is faced river steep bank slope pile foundation platform |
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| CN114351746B (en) | 2024-04-19 |
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