CN114658045A - Construction method for repairing active retaining wall - Google Patents
Construction method for repairing active retaining wall Download PDFInfo
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- CN114658045A CN114658045A CN202210396278.XA CN202210396278A CN114658045A CN 114658045 A CN114658045 A CN 114658045A CN 202210396278 A CN202210396278 A CN 202210396278A CN 114658045 A CN114658045 A CN 114658045A
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- 238000010276 construction Methods 0.000 title claims abstract description 33
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 45
- 239000002689 soil Substances 0.000 claims abstract description 35
- 238000007667 floating Methods 0.000 claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims description 94
- 239000010959 steel Substances 0.000 claims description 94
- 238000005096 rolling process Methods 0.000 claims description 57
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 230000002787 reinforcement Effects 0.000 claims description 16
- 239000004567 concrete Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 13
- 230000008439 repair process Effects 0.000 claims description 13
- 238000003825 pressing Methods 0.000 claims description 11
- 239000011150 reinforced concrete Substances 0.000 claims description 11
- 238000005266 casting Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 239000004576 sand Substances 0.000 claims description 7
- 201000010099 disease Diseases 0.000 claims description 5
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 claims description 5
- 239000002002 slurry Substances 0.000 claims description 5
- 238000004873 anchoring Methods 0.000 claims description 4
- 239000000945 filler Substances 0.000 claims description 4
- 239000011381 foam concrete Substances 0.000 claims description 4
- 239000011376 self-consolidating concrete Substances 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000004088 simulation Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 238000009415 formwork Methods 0.000 claims description 2
- 230000035515 penetration Effects 0.000 claims 1
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D37/00—Repair of damaged foundations or foundation structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/18—Making embankments, e.g. dikes, dams
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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
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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
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D35/00—Straightening, lifting, or lowering of foundation structures or of constructions erected on foundations
- E02D35/005—Lowering or lifting of foundation structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0018—Cement used as binder
- E02D2300/002—Concrete
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0026—Metals
- E02D2300/0029—Steel; Iron
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/30—Miscellaneous comprising anchoring details
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- Engineering & Computer Science (AREA)
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- Life Sciences & Earth Sciences (AREA)
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- General Life Sciences & Earth Sciences (AREA)
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Abstract
The invention relates to a construction method for repairing an active retaining wall, which is characterized in that a temporary support rod is arranged between the active retaining wall and a foundation soil body, and a positioning bolt is adopted to apply lateral support to the temporary support rod and the active retaining wall; the guide hole of the toe part of the retaining wall foundation is inserted with the anti-sliding anchor pile, and the upper surface and the front end of the toe part of the retaining wall foundation are respectively provided with a closed cover plate and a toe supporting pier; arranging stiff connecting ribs and wall top stiffened plates between the active retaining wall and the wall body lifting body; a platform support rib is arranged on a wall top reinforcing plate towards a retaining soil body; the wall back reinforcing ribs and the wall back pouring bodies are arranged along the wall body lifting bodies and the wall back side of the active retaining wall, and the post-positioned anchor pull ribs are arranged between the wall back reinforcing ribs and the retaining soil body; embedding a sinking anchor plate and anti-floating anchor bars in the wall back catchment layer, and sequentially arranging a light filling body and a wall back hardening layer on the upper part of the wall back catchment layer; the invention can reduce the lifting difficulty of the active retaining wall and improve the bearing performance of the active retaining wall.
Description
Technical Field
The invention belongs to the field of civil engineering, and particularly relates to a construction method for repairing an active retaining wall.
Background
In the fields of highways, railways, port engineering, constructional engineering and the like, retaining walls are often damaged and heightened in the use process. In order to improve the stability of the existing retaining wall and realize the use of the existing retaining wall, targeted disease treatment measures are often adopted according to the disease condition of the retaining wall. When the retaining wall in active service is repaired, how to improve the anti-slip performance and the anti-overturning performance of the retaining wall structure, reduce the wall back soil pressure of the retaining wall and improve the construction efficiency is always the key point and the difficulty of engineering control.
In the prior art, a construction method for applying a pile plate wall in repairing and reinforcing an existing reinforced earth retaining wall is provided, wherein a composite wall body with higher strength is formed by utilizing the friction force between a rib belt of the reinforced earth retaining wall and filling soil, so that the lateral soil pressure generated by a soil body behind the wall is resisted; the comprehensive internal friction angle of the roadbed filler is improved through the reinforced earth retaining wall, so that the stability of the roadbed is improved; and through the settlement and displacement monitoring of the roadbed side slope, the reinforced earth retaining wall panel can still be in a stable state after falling off. The technology adopts the pile plate wall to improve the bearing performance of the retaining wall in the construction of the existing reinforced earth retaining wall, but the technology is difficult to synchronously improve the supporting and retaining performance of the wall body, reduce the earth pressure on the back of the wall and improve the bearing performance of the wall body.
In view of this, in order to improve the construction quality of the repair structure of the active retaining wall and reduce the construction difficulty, the invention of the construction method of the repair structure of the active retaining wall, which can improve the safety of the active retaining wall, reduce the lifting difficulty of the active retaining wall and improve the bearing performance of the active retaining wall, is urgently needed.
Disclosure of Invention
Aiming at the defects, the invention provides a construction method for repairing an active retaining wall.
The scheme adopted by the invention for solving the technical problem is that the construction method for repairing the active retaining wall comprises the following steps:
step one, construction preparation: performing an active retaining wall disease test, and preparing materials and devices required by construction;
step two, laying a temporary support body: the method comprises the following steps of (1) constructing a wall surface support plate on the wall surface of an active retaining wall, laying a counter-force support pier and a pier supporting anchor plate for supporting the counter-force support pier on a foundation soil body, and firmly connecting the pier supporting anchor plate and the foundation soil body through the support anchor pier; taking a temporary support rod, respectively arranging a wall face support plate and a back pressure support plate at two ends of the temporary support rod, arranging the temporary support rod between the wall face and the back pressure support pier to enable the wall face support plate to abut against an active retaining wall and a wall face support plate above the active retaining wall, screwing a positioning bolt on the back pressure support plate to enable the positioning bolt to abut against the back pressure support pier, and applying jacking pressure to the temporary support rod and the active retaining wall by using the positioning bolt;
step three, wall toe reinforcement treatment: inserting anti-sliding anchor piles into foundation soil body leading holes at the toe parts of the retaining wall foundation at the lower end of the active retaining wall, and filling the tube cores of the anti-sliding anchor piles with anchor pile filling bodies and stiffening reinforcement bodies; supporting anchor bars are arranged between the built-in anchoring plate at the top end of the stiff reinforcement body and the retaining wall foundation; constructing a closed cover plate and a wall toe support pier on the upper surface and the front end of a wall toe of a retaining wall foundation respectively, and presetting cover plate connecting ribs adjacent to an active retaining wall in the rear end of the closed cover plate;
step four, the wall body is lifted and is set up: removing an original wall back filling body at the upper part of the back part of the active retaining wall, and inserting a post-positioned anchor lacing wire into a supporting soil body leading hole at the rear side of the original wall back filling; inserting a stiff connecting rib into a leading hole at the top end of the active retaining wall, arranging a wall top stiffened plate at the top of the active retaining wall, and firmly connecting the wall top stiffened plate with the stiff connecting rib; the method comprises the following steps of (1) erecting a formwork at the top of an active retaining wall and pouring concrete to form a wall body lifting body; the upper surfaces of the wall top stiffened plates longitudinally adjacent to each other are provided with stiffened plate connecting ribs, platform support ribs are arranged between the wall top stiffened plates and the retaining soil body, the upper ends of the platform support ribs are connected with the wall top stiffened plates, and the lower ends of the platform support ribs are inserted into the original wall back filler;
step five, constructing a wall back casting body: laying wall back reinforcing ribs with L-shaped cross sections along the wall body lifting body and the wall back side of the active retaining wall, firmly connecting the wall back reinforcing ribs with the wall body lifting body and the active retaining wall by using wall back anchor ribs, and firmly connecting the upper ends of the post-anchor tie bars with the lower ends of the wall back reinforcing ribs; the wall back reinforcing ribs and the wall top reinforcing plate are provided with oblique reinforcing ribs to connect the wall back reinforcing ribs and the wall top reinforcing plate, and the side of the wall back reinforcing ribs, which is far away from the active retaining wall, is provided with a wall back casting body;
step six, constructing a water catchment layer on the wall back: a post-drainage pipe is drilled and inserted in the wall body along the longitudinal direction of the active retaining wall above the original drainage pipe of the active retaining wall; laying a wall back water collecting layer on the upper surface of the original wall back filling body, and communicating the wall back water collecting layer with a rear drain pipe; embedding a sinking anchor plate and anti-floating anchor bars in a wall back catchment layer, and fixedly installing the sinking anchor plate at the lower ends of the anti-floating anchor bars;
seventhly, filling a wall back soil body: firstly, pouring a light filling body on the upper part of a wall back water gathering layer, and installing a filling pressing plate on the top end of the anti-floating anchor bar, wherein the upper end of the filling pressing plate is higher than the light filling body; and pouring a wall back hardening layer on the top surface of the light filling body, and covering the filling pressing plate.
Further, in the second step, the counter-force support pier is formed by rolling a steel plate, the cross section of the counter-force support pier is in a right-angled triangle shape, and a support pier anchor plate is welded on the side, away from the active retaining wall, of the support anchor pier; the pier supporting anchor plate is formed by rolling a steel plate, and a hole for the support anchor pier to penetrate through is preset in the pier supporting anchor plate; the support anchor pier is formed by rolling a steel pipe or profile steel; the temporary support rod is formed by rolling a steel pipe or profile steel, and two ends of the temporary support rod are respectively welded with the wall surface support plate and the back pressure support plate; the back pressure supporting plate is formed by rolling a steel plate, and a screw hole connected with the positioning bolt is preset on the back pressure supporting plate.
Furthermore, in the third step, the cross section of the toe support pier is rectangular, the width is 0.5-1m, and the height extends to 0.5-2m below the elevation of the bottom surface of the retaining wall foundation.
Further, in the third step, the anti-skid anchor pile is formed by adopting a round steel pipe or simulation rolling; the anchor pile filling body is made of self-compacting concrete; the top end of the stiffening reinforcement body is vertically welded and connected with the built-in anchor plate; the support anchor bars are formed by rolling steel pipes or steel bars or steel plates; the closed cover plate and the wall toe support pier are integrally prepared from reinforced concrete materials.
Furthermore, in the fourth step, the stiff connecting ribs are formed by rolling steel pipes or section steel or steel plates, a lead hole at one end is inserted into the wall body at the top end of the active retaining wall, and the other end extends out of the top surface of the wall top reinforced plate by 20-50cm and is welded with the wall top reinforced plate; the wall top stiffened plate is formed by rolling a steel plate and is uniformly distributed at intervals along the longitudinal direction of the active retaining wall; the wall body lifting body is made of reinforced concrete material; the platform support rib is composed of a stiff steel pipe and pipe cavity grouting bodies inside the stiff steel pipe, and slurry overflow holes are formed in the side wall of the stiff steel pipe.
Furthermore, in the fifth step, the wall back reinforcing ribs are formed by rolling steel plates and are uniformly arranged at intervals along the longitudinal direction of the active retaining wall, and holes for the post-anchor tie bars, the wall back anchor bars and the post-drain pipes to penetrate are preset in the wall back reinforcing ribs.
Further, in the sixth step, the water collecting layer on the back of the wall adopts open-graded medium coarse sand or sand gravel; the sinking anchor plate is formed by rolling a steel plate, and the upper surface of the sinking anchor plate is vertically welded and connected with the anti-floating anchor bars; the anti-floating anchor bar is formed by rolling a steel pipe or a threaded steel bar.
Further, in the seventh step, the light filling body with the heavy weight of 0.8-1.0g/cm is adopted3The foam concrete of (1); the wall back hardening layer is made of concrete.
Compared with the prior art, the invention has the following beneficial effects: can improve the prosthetic construction quality of active service retaining wall, reduce the construction degree of difficulty, this restoration structure can realize that active service retaining wall increases to reserve, improves the cling compound performance and the antidumping performance of retaining wall structure, can improve active service retaining wall security, reduces the degree of difficulty that active service retaining wall lifted, improves the bearing performance of active service retaining wall.
Drawings
The invention is further described with reference to the following figures.
Fig. 1 is a construction flow chart of a repair structure.
Fig. 2 is a schematic view of a repairing structure of an active retaining wall.
FIG. 3 is a schematic view of the connection structure of the wall top stiffened plate and the stiffened plate connecting rib.
Fig. 4 is a structural schematic diagram of a platform support rib.
In the figure: 1-active retaining wall; 2-a wall surface support plate; 3-foundation soil mass; 4-counterforce supporting piers; 5-pier supporting anchor plates; 6-supporting the anchor pier; 7-temporary stay bar; 8-wall supporting plates; 9-back pressure supporting plate; 10-positioning the bolt; 11-retaining wall foundations; 12-anti-skid anchor piles; 13-anchor pile filling body; 14-stiff reinforcement body; 15-built-in anchor plate; 16-supporting anchor bars; 17-a closure flap; 18-toe buttress; 19-cover plate connecting ribs; 20-original wall back filling body; 21-retaining soil body; 22-post anchor lacing wire; 23-stiff connecting ribs; 24-wall top stiffened plate; 25-a wall body raising body; 26-reinforcing plate connecting ribs; 27-platform support ribs; 28-wall back reinforcing ribs; 29-wall back anchor bars; 30-oblique reinforcing ribs; 31-wall back pouring body; 32-a rear drain pipe; 33-wall back catchment layer; 34-sinking anchor plate; 35-light weight filling; 36-filling the pressure plate; 37-wall back hardened layer; 38-anti-floating anchor bars; 39-original drain pipe; 40-stiff steel pipe; 41-lumen grouting; 42-slurry overflow hole.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Concrete pouring construction technical requirements, template supporting construction technical requirements, design and construction technical requirements of lateral deformation retaining piles, jack lifting construction technical requirements, design and construction technical requirements of retaining walls and the like are omitted in the embodiment, and the embodiment of the method related to the invention is mainly explained.
As shown in fig. 1 to 4, an active retaining wall repair construction method includes the following steps:
step one, construction preparation: performing a disease test on the retaining wall 1 in service, and preparing materials and devices required by construction;
step two, laying a temporary support body: the wall surface of an active retaining wall is provided with a wall surface support plate 2, a counterforce support pier 4 and a pier support anchor plate 5 for supporting the counterforce support pier are arranged on a foundation soil body 3, and the pier support anchor plate is firmly connected with the foundation soil body through a support anchor pier 6; taking a temporary support rod 7, respectively arranging a wall face support plate 8 and a back pressure support plate 9 at two ends of the temporary support rod, arranging the temporary support rod between the wall face and a back pressure support pier to enable the wall face support plate to abut against an active retaining wall and a wall face support plate above the active retaining wall, mounting a positioning bolt 10 on the back pressure support plate in a screwed mode, enabling the positioning bolt to abut against the back pressure support pier, and applying jacking force to the temporary support rod and the active retaining wall by using the positioning bolt;
step three, wall toe reinforcement treatment: inserting anti-sliding anchor piles 12 into foundation soil body leading holes at the toe parts of retaining wall foundations 11 at the lower ends of active retaining walls, and filling anchor pile filling bodies 13 and stiffening reinforcement bodies 14 into tube cores of the anti-sliding anchor piles; a supporting anchor bar 16 is arranged between the built-in anchor plate 15 at the top end of the stiff reinforcement body and the retaining wall foundation; constructing a closed cover plate 17 and a wall toe support pier 18 on the upper surface and the front end of a wall toe of a retaining wall foundation respectively, and presetting cover plate connecting ribs 19 adjacent to an active retaining wall in the rear end of the closed cover plate;
step four, the wall body is lifted the body and is set up: removing an original wall back filling body 20 at the upper part of the back part of the active retaining wall, and inserting a post-anchor lacing wire 22 into a supporting soil body 21 leading hole at the rear side of the original wall back filling; inserting a stiff connecting rib 23 into a leading hole at the top end of the active retaining wall, arranging a wall top stiffened plate 24 at the top of the active retaining wall, and firmly connecting the wall top stiffened plate with the stiff connecting rib; the concrete is cast on the top of the active retaining wall to form a wall body lifting body 25; rib plate connecting ribs 26 are arranged on the upper surfaces of longitudinally adjacent wall top rib plates, platform support ribs 27 are arranged between the wall top rib plates and the retaining soil body, the upper ends of the platform support ribs are connected with the wall top rib plates, and the lower ends of the platform support ribs are inserted into the original wall back filler;
step five, constructing a wall back casting body: laying wall back reinforcing ribs 28 with L-shaped cross sections along the wall back sides of the wall body lifting body and the active retaining wall, firmly connecting the wall back reinforcing ribs with the wall body lifting body and the active retaining wall by using wall back anchor ribs 29, and firmly connecting the upper ends of the post-anchor tie bars with the lower ends of the wall back reinforcing ribs; the wall back reinforcing ribs and the wall top reinforcing plate are connected by the inclined reinforcing ribs 30, and the side of the wall back reinforcing ribs, which is far away from the active retaining wall, is provided with a wall back casting body 31;
step six, constructing a water catchment layer on the wall back: a post-drainage pipe 32 is drilled and inserted in the wall body along the longitudinal direction of the active retaining wall above the original drainage pipe 39 of the active retaining wall; laying a wall back water collecting layer 33 on the upper surface of the original wall back filling body, and communicating the wall back water collecting layer with a rear drain pipe; burying a sinking anchor plate 34 and anti-floating anchor bars 38 in a wall back catchment layer, and fixedly mounting the sinking anchor plate at the lower ends of the anti-floating anchor bars;
seventhly, filling a wall back soil body: firstly, pouring a light filling body 35 on the upper part of a wall back water gathering layer, and installing a filling pressing plate 36 on the top end of the anti-floating anchor bar, wherein the upper end of the filling pressing plate is higher than the light filling body; and pouring a wall back hardening layer 37 on the top surface of the light filling body, and covering the filling pressing plate.
In the second step, the counter-force support pier is formed by rolling a steel plate, the cross section of the counter-force support pier is in a right-angled triangle shape, and a support pier anchor plate is welded on the side, away from the active retaining wall, of the support anchor pier; the pier supporting anchor plate is formed by rolling a steel plate, and a hole for the support anchor pier to penetrate through is preset in the pier supporting anchor plate; the support anchor pier is formed by rolling a steel pipe or profile steel; the temporary support rod is formed by rolling a steel pipe or profile steel, and two ends of the temporary support rod are respectively welded with the wall surface support plate and the back pressure support plate; the back pressure supporting plate is formed by rolling a steel plate, and a screw hole connected with the positioning bolt is preset on the back pressure supporting plate.
In the third step, the cross section of the toe support pier is rectangular, the width is 0.5-1m, and the height extends to 0.5-2m below the elevation of the bottom surface of the retaining wall foundation.
In the third step, the anti-skid anchor pile is formed by adopting a round steel pipe or simulation rolling; the anchor pile filling body is made of self-compacting concrete; the top end of the stiffening reinforcement body is vertically welded and connected with the built-in anchor plate; the support anchor bars are formed by rolling steel pipes or steel bars or steel plates; the closed cover plate and the wall toe support pier are integrally prepared from reinforced concrete materials.
In the fourth step, the stiff connecting rib is formed by rolling a steel pipe or section steel or a steel plate, a lead hole at one end is inserted into the wall body at the top end of the active retaining wall, and the other end extends out of the top surface of the wall top reinforced plate by 20-50cm and is welded with the wall top reinforced plate; the wall top stiffened plate is formed by rolling a steel plate and is uniformly distributed at intervals along the longitudinal direction of the active retaining wall; the wall body lifting body is made of reinforced concrete material; the platform support rib is composed of a stiff steel pipe 40 and a pipe cavity grouting body 41 inside the stiff steel pipe, and a slurry overflow hole 42 is formed in the side wall of the stiff steel pipe.
In the fifth step, the wall back reinforcing ribs are formed by rolling steel plates and are uniformly arranged at intervals along the longitudinal direction of the active retaining wall, and holes for the post-anchor tie bars, the wall back anchor bars and the post-drain pipes to penetrate are preset on the wall back reinforcing ribs.
In the sixth step, the water collecting layer on the back of the wall adopts open-graded medium coarse sand or sand gravel; the sinking anchor plate is formed by rolling a steel plate, and the upper surface of the sinking anchor plate is vertically welded and connected with the anti-floating anchor bars; the anti-floating anchor bar is formed by rolling a steel pipe or a threaded steel bar.
In the seventh step, the light filling body with the heavy weight of 0.8-1.0g/cm is adopted3The foam concrete of (1); the wall back hardening layer is made of concrete.
Specific examples of a set of components are given below:
the active retaining wall is a reinforced concrete gravity retaining wall, and the concrete strength grade is C30; the wall surface support plate is formed by rolling a steel plate with the thickness of 20mm, the width of the wall surface support plate is 20cm, the length of the wall surface support plate is 40cm, the wall surface support plate is arranged every 2m along the longitudinal direction of the active retaining wall, and the depth of anchoring the wall surface support plate into the active retaining wall is 20 cm; the foundation soil body is cohesive soil in a hard plastic state; the counter-force support pier is formed by rolling a steel plate with the thickness of 10mm, the cross section of the counter-force support pier is in a right-angled triangle shape, the side length of the right angle is 30cm, and a support pier anchor plate is welded on the side, away from the active retaining wall, of the support anchor pier; the pier supporting anchor plate is formed by rolling a steel plate with the thickness of 10mm, the width of the pier supporting anchor plate is 20cm, and a hole for the support anchor pier to penetrate through is preset in the pier supporting anchor plate; the support anchor pier is formed by rolling a steel pipe with the diameter of 100 mm; the temporary stay bar is formed by rolling H-shaped steel with the specification of 200 multiplied by 8 multiplied by 12, and two ends of the temporary stay bar are respectively propped with the wall surfaceThe plate and the back pressure bracing plate are connected by welding; the wall surface supporting plate is formed by rolling a steel plate with the thickness of 20mm, and the width of the wall surface supporting plate is 30 cm; the back pressure supporting plate is formed by rolling a steel plate with the thickness of 20mm, and a screw hole for connecting the back pressure supporting plate with the positioning bolt is preset on the back pressure supporting plate; the positioning bolt is formed by rolling a high-strength screw rod with the diameter of 30 mm; the retaining wall foundation is made of reinforced concrete, the strength grade of the concrete is C35, and the thickness of the concrete is 40 cm; the anti-sliding anchor pile is formed by rolling a round steel pipe with the diameter of 300mm, the wall thickness is 10mm, and the length is 5 m; the anchor pile filling body is made of self-compacting concrete with the strength grade of C30; the stiffening reinforcing body is formed by rolling 150 multiplied by 7 multiplied by 10 specification section steel, and the top end is vertically welded and connected with the built-in anchor plate; the built-in anchor plate is formed by rolling a steel plate with the thickness of 20mm, and the diameter of the built-in anchor plate is 200 mm; the supporting anchor bars are formed by rolling steel pipes with the diameter of 60mm, and two ends of the supporting anchor bars are respectively anchored into the retaining wall foundation by 30 cm; the closed cover plate and the wall toe support pier are both integrally cast by adopting reinforced concrete materials, the thickness of the closed cover plate is 20cm, and the thickness of the wall toe support pier is 30 cm; the cover plate connecting ribs adopt twisted steel bars with the diameter of 32 mm; the original wall back filling body is made of crushed gravel materials; the supporting soil body is cohesive soil in a hard plastic state; the rear anchor lacing wire is formed by rolling a twisted steel bar with the diameter of 32 mm; the stiff connecting rib is formed by rolling 150 multiplied by 7 multiplied by 10 section steel, 1 steel is arranged along the longitudinal direction of the active retaining wall every 2m, a lead hole at one end is inserted into the wall body of the active retaining wall by 0.5m, and the other end extends out of the top surface of the wall top reinforced plate by 50cm and is welded with a wall top reinforced plate; the wall top stiffened plate is formed by rolling a steel plate with the thickness of 10mm, and the width of the steel plate is 30 cm; the wall body lifting body is made of reinforced concrete material, and the concrete strength grade is C35; the platform support rib comprises a stiff steel pipe and a pipe cavity grouting body, and a grout overflow hole is formed in the side wall of the stiff steel pipe; the stiffened steel pipe is formed by rolling a steel pipe with the diameter of 100mm, and the pipe cavity grouting body is a concrete grouting material with the label of C30; the diameter of the slurry overflow hole is 50 mm; the wall back reinforcing ribs are formed by rolling steel plates with the thickness of 10mm, the width of the wall back reinforcing ribs is 30cm, 1 wall back reinforcing rib is arranged along the active retaining wall at intervals of 2m in the longitudinal direction, and holes for the post-anchor tie bars, the wall back anchor bars and the post-drain pipes to penetrate through are preset in the wall back reinforcing ribs; the wall back anchor bars adopt threaded ribbed steel bars with the diameter of 32 mm; rear mountedThe drain pipe and the original drain pipe are both provided with drain hoses with the diameter of 60 mm; the inclined reinforcing rib is formed by rolling a steel pipe with the diameter of 100 mm; the wall back pouring body is made of reinforced concrete, the strength grade of the concrete is C35, the width is 50cm, and the thickness is 20 cm; the water collecting layer on the back of the wall adopts open-graded sand gravel; the sinking anchor plate is formed by rolling a steel plate with the thickness of 10mm, the diameter of the sinking anchor plate is 20cm, and the upper surface of the sinking anchor plate is vertically welded and connected with the anti-floating anchor bars; the anti-floating anchor bar is formed by rolling a twisted steel bar with the diameter of 32 mm; the light filling body has the heavy weight of 0.8g/cm3The foam concrete of (1); the filling pressing plate is formed by rolling a steel plate with the thickness of 10mm, and the diameter of the filling pressing plate is 20 cm; the wall back hardening layer is formed by pouring concrete with the strength grade of C35, and the thickness is 15 cm.
According to the restoration construction method, the temporary support rods are arranged between the active retaining wall and the foundation soil body, and the positioning bolts are adopted to apply side support to the temporary support rods and the active retaining wall, so that the dynamic support stability of the active retaining wall is realized, and the influence of retaining wall foundation reinforcement on the stability of the active retaining wall is reduced.
The repairing construction method is characterized in that anti-sliding anchor piles are inserted into the wall toe part leading holes of the retaining wall foundation, the upper surface and the front end of the retaining wall foundation are respectively provided with the closed cover plate and the wall toe supporting piers, and the supporting anchor bars are arranged between the retaining wall foundation and the built-in anchoring plate, so that the anti-sliding performance and the anti-overturning performance of the retaining wall structure are improved.
The repairing construction method is characterized in that stiff connecting ribs and wall top stiffened plates are arranged at the top end of an active retaining wall, and a wall body lifting body is arranged at the top of the active retaining wall; the platform support ribs are arranged on the wall top stiffened plates for supporting and blocking the soil body, so that the platform support ribs and the wall top stiffened plates are combined to form an unloading platform, and the bearing performance of the active retaining wall and the wall body lifting body is improved.
The repair construction method is characterized in that wall back reinforcing ribs and wall back pouring bodies are arranged along the wall body lifting body and the wall back side of the active retaining wall, and the post-anchor tie bars are arranged between the wall back reinforcing ribs and the retaining soil body, so that the wall back arrangement of the post-anchor tie bars is realized, the arrangement problem of transverse reinforcement bodies is solved, and the influence of the transverse reinforcement body arrangement on the integrity of the active retaining wall can be reduced.
The repair construction method lays a wall back water collecting layer on the upper surface of the original wall back filling body, and enables the wall back water collecting layer to be communicated with a rear drain pipe, so that the drainage performance of the active retaining wall is improved; meanwhile, the invention embeds the sinking anchor plate and the anti-floating anchor bar in the wall back catchment layer, and arranges the light filling body and the wall back hardening layer on the upper part of the wall back catchment layer in sequence, thereby reducing the wall back soil pressure of the retaining wall.
If this patent discloses or refers to parts or structures that are fixedly connected to each other, the fixedly connected may be understood as: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).
In the description of this patent, it is to be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the figures, which are based on the orientation or positional relationship shown in the figures, and are used for convenience in describing the patent, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the patent.
The above-mentioned preferred embodiments, further illustrating the objects, technical solutions and advantages of the present invention, should be understood that the above-mentioned are only preferred embodiments of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A construction method for repairing an active retaining wall is characterized by comprising the following steps:
step one, construction preparation: performing an active retaining wall disease test, and preparing materials and devices required by construction;
step two, laying a temporary support body: the method comprises the following steps of (1) constructing a wall surface support plate on the wall surface of an active retaining wall, laying a counter-force support pier and a pier supporting anchor plate for supporting the counter-force support pier on a foundation soil body, and firmly connecting the pier supporting anchor plate and the foundation soil body through the support anchor pier; taking a temporary support rod, respectively arranging a wall face support plate and a back pressure support plate at two ends of the temporary support rod, arranging the temporary support rod between the wall face and the back pressure support pier to enable the wall face support plate to abut against an active retaining wall and a wall face support plate above the active retaining wall, screwing a positioning bolt on the back pressure support plate to enable the positioning bolt to abut against the back pressure support pier, and applying jacking pressure to the temporary support rod and the active retaining wall by using the positioning bolt;
step three, wall toe reinforcement treatment: inserting anti-sliding anchor piles into foundation soil body leading holes at the toe parts of the retaining wall foundation at the lower end of the active retaining wall, and filling the tube cores of the anti-sliding anchor piles with anchor pile filling bodies and stiffening reinforcement bodies; supporting anchor bars are arranged between the built-in anchoring plate at the top end of the stiff reinforcement body and the retaining wall foundation; constructing a closed cover plate and a wall toe support pier on the upper surface and the front end of a retaining wall foundation wall toe respectively, and presetting cover plate connecting ribs adjacent to an active retaining wall in the rear end of the closed cover plate;
step four, the wall body is lifted and is set up: removing an original wall back filling body at the upper part of the back part of the active retaining wall, and inserting a post-positioned anchor lacing wire into a supporting soil body leading hole at the rear side of the original wall back filling; inserting a stiff connecting rib into a leading hole at the top end of the active retaining wall, arranging a wall top stiffened plate at the top of the active retaining wall, and firmly connecting the wall top stiffened plate with the stiff connecting rib; the method comprises the following steps of (1) erecting a formwork at the top of an active retaining wall and pouring concrete to form a wall body lifting body; the upper surfaces of the wall top stiffened plates longitudinally adjacent to each other are provided with stiffened plate connecting ribs, platform support ribs are arranged between the wall top stiffened plates and the retaining soil body, the upper ends of the platform support ribs are connected with the wall top stiffened plates, and the lower ends of the platform support ribs are inserted into the original wall back filler;
step five, constructing a wall back casting body: laying wall back reinforcing ribs with L-shaped cross sections along the wall body lifting body and the wall back side of the active retaining wall, firmly connecting the wall back reinforcing ribs with the wall body lifting body and the active retaining wall by using wall back anchor ribs, and firmly connecting the upper ends of the post-anchor tie bars with the lower ends of the wall back reinforcing ribs; the wall back reinforcing ribs and the wall top reinforcing plate are provided with oblique reinforcing ribs to connect the wall back reinforcing ribs and the wall top reinforcing plate, and the side of the wall back reinforcing ribs, which is far away from the active retaining wall, is provided with a wall back casting body;
step six, constructing a water catchment layer on the wall back: a post-drainage pipe is drilled and inserted in the wall body along the longitudinal direction of the active retaining wall above the original drainage pipe of the active retaining wall; laying a wall back water collecting layer on the upper surface of the original wall back filling body, and communicating the wall back water collecting layer with a rear drain pipe; embedding a sinking anchor plate and anti-floating anchor bars in a wall back catchment layer, and fixedly installing the sinking anchor plate at the lower ends of the anti-floating anchor bars;
seventhly, filling a wall back soil body: firstly, pouring a light filling body on the upper part of a wall back water gathering layer, and installing a filling pressing plate on the top end of the anti-floating anchor bar, wherein the upper end of the filling pressing plate is higher than the light filling body; and pouring a wall back hardening layer on the top surface of the light filling body, and covering the filling pressing plate.
2. The active retaining wall repair structure according to claim 1, wherein: in the second step, the counter-force support pier is formed by rolling a steel plate, the cross section of the counter-force support pier is in a right-angled triangle shape, and a support pier anchor plate is welded on the side, away from the active retaining wall, of the support anchor pier; the pier supporting anchor plate is formed by rolling a steel plate, and a hole for the penetration of the supporting anchor pier is preset on the pier supporting anchor plate; the support anchor pier is formed by rolling a steel pipe or profile steel; the temporary support rod is formed by rolling a steel pipe or profile steel, and two ends of the temporary support rod are respectively welded with the wall surface support plate and the back pressure support plate; the back pressure supporting plate is formed by rolling a steel plate, and a screw hole connected with the positioning bolt is preset on the back pressure supporting plate.
3. The active retaining wall repair structure according to claim 1, wherein: in the third step, the cross section of the toe supporting pier is rectangular, the width is 0.5-1m, and the height extends to 0.5-2m below the bottom surface elevation of the retaining wall foundation.
4. An active retaining wall repair structure according to claim 1, wherein: in the third step, the anti-slide anchor pile is formed by adopting a round steel pipe or simulation rolling; the anchor pile filling body is made of self-compacting concrete; the top end of the stiffening reinforcement body is vertically welded and connected with the built-in anchor plate; the support anchor bars are formed by rolling steel pipes or steel bars or steel plates; the closed cover plate and the wall toe support pier are integrally prepared from reinforced concrete materials.
5. The active retaining wall repair structure according to claim 1, wherein: in the fourth step, the stiff connecting ribs are formed by rolling steel pipes or section steel or steel plates, one end of each leading hole is inserted into the wall body at the top end of the active retaining wall, and the other end of each leading hole extends 20-50cm above the top surface of the wall top reinforced plate and is welded with the wall top reinforced plate; the wall top stiffened plate is formed by rolling a steel plate and is uniformly distributed at intervals along the longitudinal direction of the active retaining wall; the wall body lifting body is made of reinforced concrete material; the platform support rib is composed of a stiff steel pipe and pipe cavity grouting bodies inside the stiff steel pipe, and slurry overflow holes are formed in the side wall of the stiff steel pipe.
6. The active retaining wall repair structure according to claim 1, wherein: in the fifth step, the wall back reinforcing ribs are formed by rolling steel plates and are uniformly arranged at intervals along the longitudinal direction of the active retaining wall, and holes for the post-anchor tie bars, the wall back anchor bars and the post-drain pipes to penetrate are preset on the wall back reinforcing ribs.
7. The active retaining wall repair structure according to claim 1, wherein: in the sixth step, the water collecting layer on the back of the wall adopts open-graded medium coarse sand or sand gravel; the sinking anchor plate is formed by rolling a steel plate, and the upper surface of the sinking anchor plate is vertically welded and connected with the anti-floating anchor bars; the anti-floating anchor bar is formed by rolling a steel pipe or a threaded steel bar.
8. The active retaining wall repair structure according to claim 1, wherein: in step seven, the light filling body is used with the heavy weight of 0.8-1.0g/cm3The foam concrete of (1); the wall back hardening layer is made of concrete.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08284183A (en) * | 1995-04-17 | 1996-10-29 | Toshihiko Chazono | Concrete block and construction method for retaining wall using the block |
| EP2108744A1 (en) * | 2008-04-11 | 2009-10-14 | Bau-Sanierungstechnik GmbH | Method for reinforcing supporting walls |
| CN107401142A (en) * | 2017-06-23 | 2017-11-28 | 杭州江润科技有限公司 | Bank revetment heightening construction method is refuted in active service |
| CN107447778A (en) * | 2017-09-19 | 2017-12-08 | 中冶沈勘工程技术有限公司 | The heightening and consolidation structure and method of a kind of in-service reinforced concrete retaining wall |
| CN107489164A (en) * | 2017-09-19 | 2017-12-19 | 中冶沈勘工程技术有限公司 | The heightening and consolidation structure and method of a kind of in-service reinforced concrete retaining wall |
| CN109736346A (en) * | 2018-12-13 | 2019-05-10 | 中交一公局桥隧工程有限公司 | Steel anchor tube reinforces weathered rock formation reinforcement balance weight retaining wall structure and construction method |
| CN111155385A (en) * | 2020-01-06 | 2020-05-15 | 浙江大学城市学院 | Treatment structure and construction method for newly added retaining wall of active large-deformation roadbed |
| CN111749288A (en) * | 2020-07-31 | 2020-10-09 | 安徽省交通建设股份有限公司 | Load-reducing heightening structure of existing retaining wall and construction method thereof |
-
2022
- 2022-04-15 CN CN202210396278.XA patent/CN114658045B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08284183A (en) * | 1995-04-17 | 1996-10-29 | Toshihiko Chazono | Concrete block and construction method for retaining wall using the block |
| EP2108744A1 (en) * | 2008-04-11 | 2009-10-14 | Bau-Sanierungstechnik GmbH | Method for reinforcing supporting walls |
| CN107401142A (en) * | 2017-06-23 | 2017-11-28 | 杭州江润科技有限公司 | Bank revetment heightening construction method is refuted in active service |
| CN107447778A (en) * | 2017-09-19 | 2017-12-08 | 中冶沈勘工程技术有限公司 | The heightening and consolidation structure and method of a kind of in-service reinforced concrete retaining wall |
| CN107489164A (en) * | 2017-09-19 | 2017-12-19 | 中冶沈勘工程技术有限公司 | The heightening and consolidation structure and method of a kind of in-service reinforced concrete retaining wall |
| CN109736346A (en) * | 2018-12-13 | 2019-05-10 | 中交一公局桥隧工程有限公司 | Steel anchor tube reinforces weathered rock formation reinforcement balance weight retaining wall structure and construction method |
| CN111155385A (en) * | 2020-01-06 | 2020-05-15 | 浙江大学城市学院 | Treatment structure and construction method for newly added retaining wall of active large-deformation roadbed |
| CN111749288A (en) * | 2020-07-31 | 2020-10-09 | 安徽省交通建设股份有限公司 | Load-reducing heightening structure of existing retaining wall and construction method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 沈守鸿;: "既有挡土墙加固加高设计与稳定性分析", 福建建筑, no. 05 * |
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