CN109577277B - Wall-mounted drainage anchor rod retaining wall structure and construction method thereof - Google Patents
Wall-mounted drainage anchor rod retaining wall structure and construction method thereof Download PDFInfo
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- CN109577277B CN109577277B CN201811363039.4A CN201811363039A CN109577277B CN 109577277 B CN109577277 B CN 109577277B CN 201811363039 A CN201811363039 A CN 201811363039A CN 109577277 B CN109577277 B CN 109577277B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/02—Retaining or protecting walls
- E02D29/0225—Retaining or protecting walls comprising retention means in the backfill
- E02D29/0233—Retaining or protecting walls comprising retention means in the backfill the retention means being anchors
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
- E02D5/76—Anchorings for bulkheads or sections thereof in as much as specially adapted therefor
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- 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
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/23—Dune restoration or creation; Cliff stabilisation
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- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
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- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Piles And Underground Anchors (AREA)
- Retaining Walls (AREA)
Abstract
The invention provides a wall-mounted drainage anchor rod retaining wall structure and a construction method thereof. The retaining wall structure comprises a longitudinal beam embedded in a bank slope top, a retaining wall and an anchor rod. The retaining wall is arranged on the water side of the bank slope. The longitudinal beam is positioned on the inner side of the protected bridge pile foundation. And a plurality of cross beams are connected between the retaining wall body and the longitudinal beam. The construction method of the retaining wall structure comprises the steps of anchor rod construction, drain hole construction, retaining wall construction, anchor pile construction, longitudinal beam construction, cross beam construction, check valve installation and the like. The retaining wall structure can effectively solve the problems in the protection technology of the bridge pile foundation in the shoreside valley region of the hydro-fluctuation belt of the large reservoir, and is advanced in technology and good in economical efficiency.
Description
Technical Field
The invention relates to the technical field of geotechnical engineering, in particular to a wall-mounted drainage anchor rod retaining wall structure.
Background
The reservoir hydro-fluctuation area is a special area where the peripheral submerged land of the reservoir periodically emerges on the water surface due to the periodic fluctuation of the reservoir water level. The range of the hydro-fluctuation area of the large reservoir is often very large, for example, the height of the hydro-fluctuation area of the Yangtze river three gorges reservoir project built in 2009 is up to 30m, and the height of the hydro-fluctuation area of the Jinshajiang river white crane beach reservoir project built in 2022 is larger, up to 60 m. The rock-soil mass in the hydro-fluctuation area of the reservoir is subjected to the periodic soaking action of reservoir water and underground water, the infiltration action of underground water and the like, so that the weathering action is stronger, and the reservoir bank reconstruction phenomenon is caused to happen occasionally. When the bank has a building, the bank reconstruction may threaten the safety of the building.
In order to develop the economy of reservoir areas, it is often necessary to construct large buildings (structures) such as highways around established, built or to be built reservoirs, and the problem of influence of reservoir bank reconstruction on the safety of the buildings (structures) is usually irremediable. For example, the Jinshajiang white crane beach reservoir project will be built in 2022, and in order to develop reservoir areas and local economy, a plurality of high-grade roads are or will be built in reservoir areas and reservoir affected areas. Due to the special topography and geological conditions of the reservoir area of the white crane beach reservoir, the bridge proportion of a high-grade highway in the reservoir area is often high, and pile foundations are mostly adopted as bridge foundations and are mostly arranged on the valley side slopes of the reservoir hydro-fluctuation area. Although most of the valley side slopes are steep-terrain rock side slopes, rock masses are broken and are located in a reservoir hydro-fluctuation area, after the white crane beach reservoir is built and operated, the probability that the valley side slopes, particularly the side slopes on the outer sides of the bridge foundation, are locally unstable is high, so that the bridge pile foundation is easily exposed and damaged, and reasonable measures are needed to be taken to protect the bridge pile foundation.
Aiming at the condition that only the slope body outside the pile foundation of the valley side slope bridge needs to be reinforced, theoretically, the available side slope reinforcement technology is more, and can be generally divided into three types, namely, the anchoring technology (such as anchor spraying, anchor rods and anchor cable reinforcement) and the retaining technology (such as retaining walls, anti-slide piles and pile plate walls) and the pressure foot technology (such as slope angle backfill earthwork and the like).
The principle of the anchoring technology is that a rock-soil body which is possibly unstable is anchored on a rock-soil body which is stable in a slope by using an anchor rod, an anchor cable and the like. The anchor rod (cable) construction method has the defects that the construction of the anchor rod (cable) can damage the foundation of the bridge pile, the anchoring effect of the anchor rod (cable) can be gradually lost along with the periodic action of reservoir water, and the local instability of the reinforced side slope cannot be effectively prevented.
The principle of the retaining technology is that the deformation of the retained rock-soil body is limited by the self stability of the retaining structure. The retaining wall has the defects that the stability of the retaining wall is insufficient due to the steep valley slope, limited base area of the retaining wall and small bearing capacity of a foundation; the disadvantage of using slide-resistant piles or pile-slab walls is that the construction difficulty is high and the economy is poor.
The principle of the pressure foot technology is to limit the deformation of the protected rock-soil body by utilizing the self-stability of the backfilled rock-soil body. Whether the device can be used is mainly controlled by the terrain, and if the terrain condition is not allowed, the device cannot be used.
In addition, dynamic change of the water level of the bank slope caused by reservoir water level elevation is a concern, and the dynamic change effect of the water level not only degrades the strength of the rock and soil mass of the bank slope, but also has the possibility that the seepage effect of underground water to the outside of the slope directly leads to instability of the slope mass.
In view of this, in view of the situation that the safety of the bridge pile foundation is easily affected by local instability of the outer slope body of the bridge pile foundation in the valley side slope of the hydro-fluctuation belt of the reservoir due to the change of the reservoir water level, research and development of an engineering technology suitable for protecting the bridge pile foundation in the valley side ditch area of the hydro-fluctuation belt of the large reservoir are urgently needed.
Disclosure of Invention
The invention aims to provide a wall-mounted drainage anchor retaining wall structure and a construction method thereof, which aim to solve the problems in the prior art.
The technical scheme adopted for achieving the aim of the invention is that the wall-mounted type drainage anchor retaining wall structure comprises a longitudinal beam embedded in the top of a bank slope, a retaining wall and an anchor rod.
The retaining wall is arranged on the water side of the bank slope. The retaining wall comprises a retaining wall body. The bearing parts extend from the two ends of the retaining wall body along the bank slope to the rock and soil body behind the wall.
The longitudinal beam is positioned on the inner side of the protected bridge pile foundation. And a plurality of cross beams are connected between the retaining wall body and the longitudinal beam. The cross beams and the longitudinal beams are vertically arranged. And anchor piles are arranged below the longitudinal beams.
One end of the anchor rod is fixed in the retaining wall body, and the other end of the anchor rod is embedded in the rock-soil body behind the wall.
The retaining wall structure is also provided with a drain hole. The drain hole runs through the retaining wall body and then extends into the rock-soil body behind the wall. The drain holes are obliquely arranged. And a drain pipe penetrates through the drain hole. And a check valve is arranged at the outlet of the drain pipe.
Furthermore, a deformation joint is arranged in the retaining wall. And the deformation joint is filled with a water stopping material.
Furthermore, a stressed steel bar is reserved on the upper surface of the longitudinal beam.
Furthermore, a stressed steel bar is reserved on the upper surface of the anchor pile.
The invention also discloses a construction method of the wall-mounted drainage anchor rod retaining wall structure, which comprises the following steps:
1) and determining the construction position of the retaining wall structure according to the geological survey data.
2) Excavating and cleaning slope rock-soil mass, and constructing an anchor rod according to design requirements. And constructing the pile foundation according to the design requirement.
3) And (4) constructing a drain hole in the rock-soil mass behind the wall, and penetrating through the drain pipe. Wherein, the drain pipe is exposed for a certain length.
4) And constructing the retaining wall according to the design requirement.
5) And constructing the anchor piles according to design requirements.
6) And constructing the longitudinal beam according to design requirements.
7) And constructing the beam according to design requirements.
8) And (5) installing a check valve.
The technical effects of the invention are undoubted:
A. the method can effectively solve the problems in the bridge pile foundation protection technology of the shoreside valley area of the large-scale reservoir hydro-fluctuation belt, and has advanced technology and good economical efficiency;
B. the retaining wall structure can ensure the stability of the slope body outside the bridge pile foundation, avoid the exposure and damage of the bridge pile foundation and obviously reduce the horizontal load acting on the bridge pile foundation due to the horizontal deformation of the side slope;
C. the anchor piles, the longitudinal beams and the cross beams jointly solve the problem that the bearing capacity of the retaining wall foundation is insufficient; the retaining wall and the anchor rod jointly support and retain the rock-soil mass behind the wall, so that the problem of stability of the rock-soil mass is effectively solved; the retaining wall seals the rock-soil mass behind the wall, and the rock-soil mass behind the wall is effectively prevented from being soaked by reservoir water by the one-way drainage function of the drainage hole with the check valve, so that the influence degree of reservoir water level lifting on the dynamic change of the underground water level behind the retaining wall is obviously reduced;
D. the check valve is arranged on the surface of the retaining wall or on the position close to the surface inside the retaining wall, and is convenient to overhaul and replace.
Drawings
FIG. 1 is a schematic view of a retaining wall structure;
FIG. 2 is a top view of a retaining wall structure;
fig. 3 is a schematic view of the retaining wall structure.
In the figure: the retaining wall comprises a retaining wall 1, a retaining wall body 101, a bearing part 102, anchor rods 2, cross beams 3, longitudinal beams 4, anchor piles 5, a drain pipe 6, a check valve 7 and a bridge pile foundation 8.
Detailed Description
The present invention is further illustrated by the following examples, but it should not be construed that the scope of the above-described subject matter is limited to the following examples. Various substitutions and alterations can be made without departing from the technical idea of the invention and the scope of the invention is covered by the present invention according to the common technical knowledge and the conventional means in the field.
Example 1:
the embodiment discloses a wall-hanging drainage stock retaining wall structure to solve the problem that exists in the current large-scale reservoir hydro-fluctuation belt bank valley district bridge pile foundation protection technology. Referring to fig. 1, the retaining wall structure includes a longitudinal beam 4 embedded in the top of a bank slope, a retaining wall 1 and anchor rods 2.
The retaining wall 1 is arranged on the water side of the bank slope. The retaining wall 1 includes a retaining wall body 101. Two ends of the retaining wall body 101 along the bank slope extend into the rock-soil body behind the wall to form bearing parts 102. The retaining wall 1 is used for supporting and retaining rock and soil mass behind the retaining wall and sealing the surface of the rock and soil mass. When the length of the retaining wall is too long, a deformation joint can be arranged in the retaining wall 1, and the deformation joint is filled with water stop materials.
Referring to fig. 2 and 3, the longitudinal beams 4 are located inside the protected bridge pile foundation 8. And 3 cross beams 3 are connected between the retaining wall body 101 and the longitudinal beam 4. The cross beams 3 are arranged perpendicular to the longitudinal beams 4. One end of the cross beam 3 is firmly connected with the top of the retaining wall body 101, and the other end of the cross beam is firmly connected with the longitudinal beam 4. And a stressed steel bar is reserved on the upper surface of the longitudinal beam 4. And an anchor pile 5 is also arranged below the longitudinal beam 4. And a stressed steel bar is reserved on the upper surface of the anchor pile 5. The anchor piles 5 provide a downward force to the longitudinal beams 4. The cross beam 3, the longitudinal beam 4 and the anchor piles 5 provide upward and inward force for the retaining wall 1 together, so that the problem of insufficient bearing capacity of the retaining wall foundation is solved. In actual production, a bridge bearing platform is arranged above the cross beam 3.
One end of the anchor rod 4 is fixed in the retaining wall body 101, and the other end is embedded in the rock-soil body behind the wall. The anchor rod 4 is used for reinforcing the rock-soil mass behind the retaining wall and connecting the retaining wall 1 and the rock-soil mass into a whole.
The retaining wall structure is also provided with a drain hole. The drain hole runs through the retaining wall body 101 and then extends into the rock-soil body behind the wall. The drain holes are obliquely arranged. And a drain pipe 6 penetrates through the drain hole. And a check valve 7 is arranged at the outlet of the water discharge pipe 6. When the front water level of the retaining wall is lower than the rear water level of the retaining wall, the check valve is automatically opened to discharge water in rock and soil bodies behind the retaining wall, but when the front water level of the retaining wall is higher than the rear water level of the retaining wall, the check valve is automatically closed to prevent the water in front of the retaining wall from permeating into the rock and soil bodies behind the retaining wall through the water discharge hole.
Example 2:
the embodiment provides a construction method of a wall-mounted water drainage anchor retaining wall structure according to embodiment 1, which includes the following steps:
1) and determining the construction position of the retaining wall structure according to the geological survey data.
2) Firstly excavating and cleaning slope rock-soil bodies according to design, then selecting a proper construction method to construct the anchor rod 2 according to the designed anchor rod position, size, strength grade and the like, and ensuring that the stressed reinforcing steel bar of the anchor rod 2 is exposed for enough length so as to be connected with the retaining wall 1.
3) And a drain hole is constructed in the rock-soil mass behind the wall, and a drain pipe 6 is arranged in a penetrating way. Wherein the drain pipe 6 is exposed for a certain length.
4) According to the designed size, strength grade and the like of the retaining wall, a proper construction method is selected for constructing the retaining wall 1, the back surface of the retaining wall 1 is firmly connected with rock-soil bodies behind the wall, and the drain holes penetrate through the retaining wall 1 according to the design requirements. Enough stressed steel bars are reserved at the top of the retaining wall 1 so as to be connected with the cross beam 3.
5) And (3) according to the designed anchor pile position, size, strength grade and the like, selecting a proper construction method to construct the anchor pile 5, and ensuring that the stressed steel bar of the anchor pile 5 is exposed for enough length so as to be connected with the longitudinal beam 4.
6) And (3) selecting a proper construction method to construct the longitudinal beam 4 according to the designed longitudinal beam size, reinforcement, strength grade and the like, and ensuring that the longitudinal beam 4 is firmly connected with the anchor pile 5. Enough stressed steel bars are reserved on the top surfaces of the longitudinal beams 4 so as to be connected with the cross beams 3.
7) According to the designed beam size, reinforcement, strength grade and the like, a proper construction method is selected for constructing the beam 3, and the beam 3 is firmly connected with the retaining wall 1 and the longitudinal beam 4.
8) According to the designed position, type and the like of the check valve, a proper installation method is selected to install the check valve 7.
Claims (5)
1. The utility model provides a wall-hanging drainage stock retaining wall structure which characterized in that: comprises a longitudinal beam (4) embedded at the top of a bank slope, a retaining wall (1) and an anchor rod (2);
the retaining wall (1) is arranged on the water side of the bank slope; the retaining wall (1) comprises a retaining wall body (101); two ends of the retaining wall body (101) along the direction of the bank slope extend into the rock-soil body behind the wall to form bearing parts (102);
the longitudinal beam (4) is positioned on the inner side of the protected bridge pile foundation (8); a plurality of cross beams (3) are connected between the retaining wall body (101) and the longitudinal beam (4); the cross beam (3) and the longitudinal beam (4) are vertically arranged; a bridge bearing platform is arranged above the cross beam (3); an anchor pile (5) is arranged below the longitudinal beam (4);
one end of the anchor rod (2) is fixed in the retaining wall body (101), and the other end of the anchor rod is embedded in a rock-soil body behind the wall;
the retaining wall structure is also provided with a drain hole; the drain hole penetrates through the retaining wall body (101) and then extends into a rock-soil body behind the wall; the drain holes are obliquely arranged; a drain pipe (6) penetrates through the drain hole; and a check valve (7) is arranged at the outlet of the water discharge pipe (6).
2. A wall-mounted drain anchor retaining wall structure according to claim 1, wherein: a deformation joint is arranged in the retaining wall (1); and the deformation joint is filled with a water stopping material.
3. A wall-mounted drain anchor retaining wall structure according to claim 1, wherein: and a stressed steel bar is reserved on the upper surface of the longitudinal beam (4).
4. A wall-mounted drain anchor retaining wall structure according to claim 1, wherein: and a stressed steel bar is reserved on the upper surface of the anchor pile (5).
5. A construction method of a wall-hung type drainage anchor retaining wall structure according to claim 1, comprising the steps of:
1) determining the construction position of the retaining wall structure according to geological survey data;
2) excavating and cleaning slope rock-soil bodies, and constructing an anchor rod (2) according to design requirements;
3) a drain hole is constructed in the rock-soil mass behind the wall, and a drain pipe (6) is arranged in a penetrating way; wherein, the drain pipe (6) is exposed for a certain length;
4) constructing the retaining wall (1) according to the design requirement;
5) constructing an anchor pile (5) according to design requirements;
6) constructing the longitudinal beam (4) according to the design requirement;
7) constructing the cross beam (3) according to design requirements;
8) and installing a check valve (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811363039.4A CN109577277B (en) | 2018-11-15 | 2018-11-15 | Wall-mounted drainage anchor rod retaining wall structure and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811363039.4A CN109577277B (en) | 2018-11-15 | 2018-11-15 | Wall-mounted drainage anchor rod retaining wall structure and construction method thereof |
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| CN109577277A CN109577277A (en) | 2019-04-05 |
| CN109577277B true CN109577277B (en) | 2021-01-12 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109914470A (en) * | 2019-04-18 | 2019-06-21 | 中冶华天南京工程技术有限公司 | A kind of road shoulder barricade and its construction method |
| CN110397050B (en) * | 2019-08-05 | 2020-07-14 | 河北工业大学 | Beam-anchor type light drainage retaining wall and construction method thereof |
| CN111058463B (en) * | 2019-12-29 | 2024-03-22 | 中铁二院工程集团有限责任公司 | Construction method of rock steep slope high cantilever slope-collecting reinforcing structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201125354Y (en) * | 2007-11-23 | 2008-10-01 | 中铁二院工程集团有限责任公司 | Steep hill road bed branch block reinforced structure |
| CN104895088A (en) * | 2015-04-07 | 2015-09-09 | 中国建筑第六工程局有限公司 | A method of reducing foundation pit asymmetrical pressure |
| CN205242433U (en) * | 2015-12-17 | 2016-05-18 | 中国建筑第二工程局有限公司 | Both ends cantilever type prestressing force is to drawing retaining wall |
| CN106049348B (en) * | 2016-06-15 | 2018-01-26 | 中国电建集团成都勘测设计研究院有限公司 | Barrier wall structure for sponge urban construction |
| CN207775920U (en) * | 2017-12-21 | 2018-08-28 | 贵州电力设计研究院 | A kind of mountain area electric power pylon strengthening of foundation device |
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