CN111535079A - End-stabbing anchoring force enhancing structure and construction method - Google Patents
End-stabbing anchoring force enhancing structure and construction method Download PDFInfo
- Publication number
- CN111535079A CN111535079A CN202010414987.7A CN202010414987A CN111535079A CN 111535079 A CN111535079 A CN 111535079A CN 202010414987 A CN202010414987 A CN 202010414987A CN 111535079 A CN111535079 A CN 111535079A
- Authority
- CN
- China
- Prior art keywords
- thorn
- shield structure
- shield
- end thorn
- roadbed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
- E01B1/002—Ballastless track, e.g. concrete slab trackway, or with asphalt layers
- E01B1/007—Ballastless track, e.g. concrete slab trackway, or with asphalt layers with interlocking means to withstand horizontal forces
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2204/00—Characteristics of the track and its foundations
- E01B2204/09—Ballastless systems
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Railway Tracks (AREA)
Abstract
The invention discloses an end stabbing anchoring force enhancing structure of a ballastless track and a construction method, wherein the elevation of the track and the central line of a line are measured and monitored; shield unearthing is carried out at the bottom of the main end thorn of the n-shaped end thorn; grouting holes are formed in the two sides and the bottom of the wall of the shield structure, and slurry is injected into the roadbed AB group filler through a perforated pipe or a sleeve valve pipe to form the shield structure with peripheral dendritic reinforcement; vertically punching a hole upwards in the top of the pipe wall of the shield structure to the main end thorn, injecting an adhesive into the hole and planting a rib, and connecting the shield structure and the main end thorn; pouring lightweight aggregate concrete into the cavity of the shield structure to firmly integrate the reinforced shield structure with the existing end thorn to form an enhanced end thorn structure; and (4) removing the template, repairing the cable trough outside the cable, and recovering the side slope. According to the invention, the anchoring force of the end stabs is obviously increased by enhancing the height and the anchoring range of the main end stabs of the n-shaped end stabs; the purpose of reducing the longitudinal displacement of the end thorns along the road and stabilizing the track structure of the transition section of the road bridge is achieved.
Description
Technical Field
The invention relates to the technical field of ballastless tracks, in particular to an end stabbing anchoring force enhancing structure of a ballastless track and a construction method.
Background
In recent years, the high-speed railway in China is rapidly developed, the high-speed railway has the characteristics of high smoothness and high stability, in order to achieve the purpose, a ballastless track structure is generally adopted in the high-speed railway line in China, and compared with other track structures, the ballastless track structure has the characteristics of high integrity, high stability and good durability.
CRTS II slab ballastless tracks are adopted by the Jinghu high-speed railway, the ballastless track base on the bridge is of a longitudinal continuous reinforced concrete structure, and a friction plate, an end thorn and a transition plate are arranged at the starting and ending point of the bridge. The rear anchoring structure of the CRTS II type slab ballastless track platform is an important component of the CRTS II type slab track structure, wherein the friction plates and the end thorns are mainly used for transmitting temperature force, braking force and the like generated on a continuous base on a bridge into a roadbed, resisting the temperature force of the base plate and the power of a train system (acting), and restraining the longitudinal displacement of the continuous reinforced concrete base plate on the bridge. Under the load action of the anchoring structure, the maximum horizontal displacement generated by the anchoring structure should not exceed 3mm, and if not, the soil body is unstable, so that the stability of the track structure is threatened.
However, currently, on a part of road sections, the actual measurement value is out of limit (the maximum horizontal displacement exceeds 3mm), which causes the irregularity of the track and easily causes the defects of vehicle bump at the bridge head and the like; not only reduces the running stability of the vehicle, but also has influence on the safe running of the train.
For the stability of track structure and the safety and smoothness of driving, need carry out disease renovation to the thorn district section. The end thorn diseases of the CRTS II plate type ballastless track are mostly hidden projects, and the method has high difficulty in renovation, high cost and long time consumption. Although relative researches are conducted on the end pricking structure, the mechanical property and the setting scheme in China, no complete and effective specific measures are available for disease treatment.
Disclosure of Invention
Aiming at the problems that the temperature force braking force and the like of a track structure are overlarge, and the anchoring force of an n-shaped end thorn is insufficient to cause the movement of the track structure in the prior art, the invention provides an end thorn anchoring force reinforcing structure of a ballastless track and a construction method.
The invention discloses an end thorn anchoring force reinforcing structure, which comprises: II-shaped end stabs;
the bottom of the main end thorn of the n-shaped end thorn is provided with a shield structure;
grouting holes are formed in the two sides and the bottom of the pipe wall of the shield structure, and slurry is injected into roadbed AB group filler through the grouting holes to form the shield structure with peripheral dendritic reinforcement;
the top of the shield structure is connected with the bottom of the main end thorn of the n-shaped end thorn through a strong rib, and an adhesive is poured between the strong rib and the end thorn;
lightweight aggregate concrete is poured in the cavity of the shield structure.
As a further improvement of the invention, a perforated pipe or a sleeve valve pipe is inserted into the grouting hole, and grouting is carried out in the roadbed AB group filler through the perforated pipe or the sleeve valve pipe, so that the grout is diffused in the roadbed AB material to form a pile, and a shield structure with peripheral dendritic reinforcement is formed.
As a further improvement of the invention, the strengthening ribs are uniformly distributed horizontally.
As a further improvement of the invention, the slurry is a low-viscosity high-permeability fast curing slurry, and the low-viscosity high-permeability fast curing slurry is one of superfine cement, superfine cement-water glass, polyurethane, polyurea, epoxy resin, vinyl resin, unsaturated polyester, sulphoaluminate system and aluminate system;
the working time of the low-viscosity high-permeability fast curing slurry is 0.1-60 min, the volume expansion rate is more than 0.1%, and the 2-hour compressive strength reaches more than 70% of the designed strength.
As a further improvement of the invention, the adhesive is one of epoxy resin, epoxy resin mortar, vinyl resin and polymer cement paste;
the viscosity of the adhesive is 200-500 mPa.s, the bonding strength of the adhesive with concrete and steel is more than 5MPa, the compressive strength is more than 90MPa, and the tensile strength is more than 20 MPa.
As a further improvement of the invention, the lightweight aggregate concrete is high-fluidity micro-expansion lightweight aggregate concrete;
the high-fluidity micro-expansion lightweight aggregate concrete has the expansibility of 600-700 mm and the density of 1200kg/m3～1800kg/m3The expansion rate is 0.5-3%, the strength after 24 hours is not less than 10MPa, and the 28d compressive strength is not less than 30MPa.
The invention also discloses a construction method of the end thorn anchoring force reinforcing structure, which comprises the following steps:
measuring the elevation of the track and the central line of the line, so that the geometric deformation of the track before and after construction and renovation is within an allowable range;
shield unearthing is carried out at the bottom of a main end thorn of the n-shaped end thorn to form a shield structure tightly attached to the main end thorn;
grouting holes are formed in the two sides and the bottom of the tube wall of the shield structure, perforated tubes or sleeve valve tubes are inserted into the grouting holes, and grout is injected into roadbed AB group filling through the perforated tubes or the sleeve valve tubes so that the grout is diffused in roadbed AB materials to form piles to form the peripheral dendritic reinforced shield structure;
vertically punching a hole upwards in the top of the pipe wall of the shield structure to the main end thorn, injecting an adhesive into the hole and planting a reinforcing rib, and connecting the shield structure and the main end thorn;
pouring lightweight aggregate concrete into the cavity of the shield structure to firmly integrate the reinforced shield structure with the existing end thorn to form an enhanced end thorn structure;
and (4) removing the template, repairing the cable trough outside the cable, and recovering the side slope.
As a further improvement of the invention, the maximum distance between the main end thorn and the shield structure is not more than 50 mm.
As a further improvement of the invention, the depth of the grouting hole is 1 m-1.5 m.
As a further improvement of the invention, the punching depth of the main end thorn bottom is 40-50 cm, the hole spacing is 40-80 cm, and the diameter of the strengthening rib is 16-28 mm.
Compared with the prior art, the invention has the beneficial effects that:
the anchoring force of the end stabs is remarkably increased by enhancing the height and the anchoring range of the main end stabs of the n-shaped end stabs; the reinforcing rear end thorn anchoring force can be improved by 5000kN, and the longitudinal displacement of the ballastless track of the road and bridge transition section is less than 0.2 mm;
meanwhile, the low-viscosity high-permeability fast curing grout is adopted, the volume expansion is controlled to be more than 0.1%, the grouting filling is ensured to be full, and the grouting anchoring force is improved; the low-viscosity adhesive is adopted for strengthening the ribs and anchoring, so that the fluidity of the epoxy resin is improved, and full perfusion is ensured; the high-fluidity micro-expansion lightweight aggregate concrete is adopted for backfilling so as to ensure that the self weight of the roadbed body is not increased basically by the filled material, and in addition, the high-fluidity micro-expansion lightweight aggregate concrete is adopted, has smaller particles and higher water retention, can improve the permeability of cement slurry, increases the friction force between an anchoring structure and the surrounding soil body, and achieves the purpose of improving the anchoring force of the thorny structure.
Drawings
Fig. 1 is a schematic structural view of an n-shaped end stab according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a main end stabbing lower shield of the n-shaped end stabs according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a shield pipe wall drilling and grouting according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a shield and an end-piercing-bonded bar connection according to an embodiment of the present invention.
In the figure:
1. II-shaped end stabs; 2. roadbed AB group filler; 3. the wall of the shield pipe; 4. grouting holes; 5. strengthening the ribs; 6. High-fluidity micro-expanded lightweight aggregate concrete; 7. and grouting the reinforced area.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention is described in further detail below with reference to the attached drawing figures:
as shown in fig. 4, the present invention provides an end stab anchoring force enhancing structure, comprising: the original n-shaped end thorn 1 of the ballastless track and a roadbed AB group filler 2 are adopted, and the n-shaped end thorn 1 is composed of a main end thorn and a small end thorn;
the end thorn anchoring force enhancing structure is characterized in that a high-fluidity micro-expansion lightweight aggregate concrete (segment/layer) 6 tightly attached to a main end thorn is added at the bottom of the main end thorn of an original n-shaped end thorn 1, so that the height/length of the main end thorn is increased; in the invention, a continuous or dendritic reinforced grouting area 7 is formed in the main end thorn and the peripheral roadbed AB group filler 2 of the high-fluidity micro-expansion lightweight aggregate concrete (section/layer) 6, thereby increasing the anchoring range of the main end thorn; meanwhile, the invention realizes the rigid connection between the main end thorns and the high-fluidity micro-expansion lightweight aggregate concrete (section/layer) 6 through the strengthening ribs 5. According to the invention, the anchoring force of the end stabs is obviously increased by enhancing the height and the anchoring range of the main end stabs of the n-shaped end stabs; the purpose of reducing the longitudinal displacement of the end thorns along the road and stabilizing the track structure of the transition section of the road bridge is achieved.
As shown in fig. 1-4, the formation process of the end stabbing anchoring force enhancing structure of the present invention is as follows:
the bottom of the main end thorn of the n-shaped end thorn 1 is provided with a shield structure;
grouting into the roadbed AB group filler through a perforated pipe or a sleeve valve pipe, so that the grout is diffused in the roadbed AB material to form a pile column, and a shield structure with peripheral dendritic reinforcement, namely a grouting area 7, is formed;
the top of the shield structure is connected with the bottom of a main end thorn of the n-shaped end thorn 1 through a strengthening rib 5, and an adhesive is poured between the strengthening rib 5 and the end thorn;
and high-fluidity micro-expansion lightweight aggregate concrete 6 is poured in the cavity of the shield structure.
As shown in fig. 1 to 4, the method for constructing the end stabbing anchoring force enhancing structure of the present invention includes:
measuring the elevation of the track by using a high-precision leveling instrument, measuring the center line of the track by using a total station, and recording data to ensure that the geometric deformation of the track before and after construction and renovation is within an allowable range;
at the lower part of the main end thorn tightly attached to the n-shaped end thorn 1, a micro shield chisel is used for digging in and out soil at the roadbed side to prevent the track structure from settling and deforming, and a shield structure tightly attached to the main end thorn is formed;
a plurality of grouting holes 4 are formed in the two sides and the bottom of the shield pipe wall 3, flower tubes or sleeve valve tubes are inserted into the grouting holes 4, and low-viscosity high-permeability fast curing slurry is injected into the roadbed AB group filler 2 through the flower tubes or the sleeve valve tubes, so that the slurry is diffused in the roadbed AB material to form pile columns, and a shield structure with peripheral dendritic reinforcement, namely a grouting area 7, is formed;
step 4, connecting the shield with the end pricks:
vertically punching a hole upwards in the top of the pipe wall of the shield structure until the hole is pierced at the main end, injecting an adhesive and planting a reinforcing bar, and connecting the shield structure with the implanted reinforcing bar by welding or reinforcing mesh sheets;
erecting a template at the side of the roadbed, and filling high-fluidity micro-expansion lightweight aggregate concrete 6 into a cavity below the end thorn to be full, so that the reinforced shield structure is firmly integrated with the existing end thorn to form a reinforced end thorn structure;
and 6, restoring the site:
and (4) removing the template, repairing the cable trough outside the cable, and recovering the side slope.
In the end stabbing anchoring force enhancing structure, the forming process or the construction method:
the grout injected through the grouting holes is low-viscosity high-permeability fast curing grout, and the low-viscosity high-permeability fast curing grout is one of superfine cement, superfine cement-water glass, polyurethane, polyurea, epoxy resin, vinyl resin, unsaturated polyester, a sulphoaluminate system and an aluminate system; the working time of the low-viscosity high-permeability fast curing slurry is 0.1-60 min, the volume expansion rate is more than 0.1%, and the 2-hour compressive strength reaches more than 70% of the designed strength. Preferably, the grouting material is low-viscosity polyurethane, the molecular weight of a polyol composition of the grouting material is 100-500, the polyol composition contains 5-20% of silane, the viscosity of the polyurethane slurry is 30-100 mPa.s, the volume expansion rate is more than 0.1%, and the 2-hour compressive strength is more than 5 MPa. According to the invention, the small molecular polyurethane slurry is adopted for grouting, and a certain amount of silane is introduced into the combined material, so that the viscosity of the polyurethane slurry can be reduced, the permeability of the slurry can be improved, the volume expansion is controlled to be more than 0.1%, the grouting filling is ensured to be full, and the grouting anchoring force is improved.
The adhesive is one of epoxy resin, epoxy resin mortar, vinyl resin and polymer cement paste; the viscosity of the adhesive is 200-500 mPa.s, the bonding strength of the adhesive with concrete and steel is more than 5MPa, the compressive strength is more than 90MPa, and the tensile strength is more than 20 MPa. The low-viscosity epoxy resin mortar is used for strengthening the ribs and anchoring, so that the fluidity of the epoxy resin is improved, and full perfusion is ensured.
The lightweight aggregate concrete is high-fluidity micro-expansion lightweight aggregate concrete; the high-fluidity micro-expansion lightweight aggregate concrete has the expansibility of 600-700 mm and the density of 1200kg/m3～1800kg/m3The expansion rate is 0.5-3%, the strength after 24 hours is not less than 10MPa, and the 28d compressive strength is not less than 30MPa. The invention adopts the high-fluidity micro-expansion lightweight aggregate concrete for backfilling so as to ensure that the self weight of the roadbed body is not increased basically by the filled material, and in addition, the high-fluidity micro-expansion lightweight aggregate concrete has smaller particles and higher water retention property, can improve the permeability of cement slurry, increase the friction force between an anchoring structure and the surrounding soil body and achieve the purpose of improving the anchoring force of the stabbing structure.
The strengthening ribs are uniformly distributed and horizontally distributed.
The maximum distance between the main end thorn and the shield structure does not exceed 50 mm.
The depth of the grouting hole is 1 m-1.5 m.
According to the invention, the punching depth of the bottom of the main end thorn is 40-50 cm, the hole spacing is 40-80 cm, and the diameter of the reinforcing rib is 16-28 mm.
Example (b):
measuring the elevation of the track by using a high-precision leveling instrument, measuring the center line of the track by using a total station, recording data, and ensuring that the geometric deformation of the track before and after construction and renovation is within an allowable range;
the maximum distance between the main end pricks and the lower part of the n-shaped end prick is not more than 50 mm; a pipe wall with the height of 1.5m and the width of 4m is used as a jacking pipe with the thickness of 5cm of reinforced concrete at the roadbed side for shielding, digging in and out soil, and cleaning the soil body which is dug out in time;
continuously advancing the shield under the end stabs to a depth of 9m, and arranging plum blossom-shaped holes on the two sides and the bottom of the wall of the shield by using a rock drill, wherein the depth of the grouting hole is 1 m-1.5 m; the sleeve valve pipe is inserted into the sleeve valve pipe by deep and shallow grouting, the slurry is low-viscosity polyurethane, the molecular weight of the polyol composition is 100-500, the polyol composition contains 5-20% of silane, the viscosity of the polyurethane slurry is 30-100 mPa.s, the volume expansion rate is more than 0.1%, and the 2h anti-pressure intensity is more than 5 MPa. The slurry is diffused in the roadbed AB material to form a pile column, so that a peripheral dendritic reinforced shield structure is formed;
step 4, connecting the shield with the end pricks:
vertically punching holes in the bottom of the end-piercing reinforced concrete structure from bottom to top, wherein the hole spacing is 0.5 m, the depth is 40-50 cm, and injecting low-viscosity epoxy resin mortar, the viscosity of the epoxy resin mortar is 200-500 mPa.s, the bonding strength of the epoxy resin mortar, concrete and steel is more than 5MPa, the compressive strength is more than 90MPa, and the tensile strength is more than 20 MPa; planting tendons with the diameter of 16 mm-28 mm;
after grouting and bar planting are completed, erecting templates at two ends of the shield, pouring micro-expansion lightweight aggregate concrete into the cavity below the end thorn, filling fully, and firmly integrating the reinforced shield structure with the existing end thorn to form an enhanced end thorn structure;
and 6, restoring the site:
dismantling the template, repairing an off-line cable trough and restoring the side slope; the thorn anchoring force at the reinforced rear end can be improved by 5000kN, and the longitudinal displacement of the ballastless track at the transition section of the road bridge is less than 0.2 mm.
The invention has the advantages that:
the anchoring force of the end stabs is remarkably increased by enhancing the height and the anchoring range of the main end stabs of the n-shaped end stabs; tunneling and unearthing are carried out by using a miniature shield under the main end stabs of the end stabs, so that the settlement and deformation of the track structure caused by construction are prevented; and a pattern pipe or sleeve valve pipe grouting mode is used for further expanding the combination range of the shield structure and the roadbed AB group filler and enhancing the structure anchoring effect.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An end stab anchorage force enhancement structure, comprising: II-shaped end stabs;
the bottom of the main end thorn of the n-shaped end thorn is provided with a shield structure;
grouting holes are formed in the two sides and the bottom of the pipe wall of the shield structure, and slurry is injected into roadbed AB group filler through the grouting holes to form the shield structure with peripheral dendritic reinforcement;
the top of the shield structure is connected with the bottom of the main end thorn of the n-shaped end thorn through a strengthening rib, and an adhesive is poured between the strengthening rib and the end thorn;
lightweight aggregate concrete is poured in the cavity of the shield structure.
2. The end-piercing anchoring force enhancing structure as claimed in claim 1, wherein a perforated pipe or a sleeve valve pipe is inserted into the grouting hole, and grouting is performed into the roadbed AB group filler through the perforated pipe or the sleeve valve pipe, so that the grout is diffused in the roadbed AB group filler to form a pile column, thereby forming the peripheral dendritic reinforcement shield structure.
3. The end stab anchorage force enhancement structure of claim 1, wherein said tendons are arranged in a horizontally uniform manner.
4. The stab-anchored force reinforcement structure of claim 1, wherein said grout is a low viscosity high permeability fast-setting grout, said low viscosity high permeability fast-setting grout being one of ultra-fine cement, ultra-fine cement-water glass, polyurethane, polyurea, epoxy resin, vinyl resin, unsaturated polyester, thioaluminate system, aluminate system;
the working time of the low-viscosity high-permeability fast curing slurry is 0.1-60 min, the volume expansion rate is more than 0.1%, and the 2-hour compressive strength reaches more than 70% of the designed strength.
5. The end stab anchorage force enhancement structure of claim 1, wherein said adhesive is one of epoxy resin, epoxy resin mortar, vinyl resin, polymer cement slurry;
the viscosity of the adhesive is 200-500 mPa.s, the bonding strength of the adhesive with concrete and steel is more than 5MPa, the compressive strength is more than 90MPa, and the tensile strength is more than 20 MPa.
6. The end stab anchorage force enhancement structure of claim 1, wherein said lightweight aggregate concrete is high-fluidity micro-expanded lightweight aggregate concrete;
the high-fluidity micro-expansion lightweight aggregate concrete has the expansibility of 600-700 mm and the density of 1200kg/m3～1800kg/m3The expansion rate is 0.5-3%, the strength after 24 hours is not less than 10MPa, and the 28d compressive strength is not less than 30MPa.
7. A method of constructing an end stab anchorage force enhancement structure according to any of claims 1-6, comprising:
measuring the elevation of the track and the central line of the line, so that the geometric deformation of the track before and after construction and renovation is within an allowable range;
shield unearthing is carried out at the bottom of a main end thorn of the n-shaped end thorn to form a shield structure tightly attached to the main end thorn;
grouting holes are formed in the two sides and the bottom of the tube wall of the shield structure, perforated tubes or sleeve valve tubes are inserted into the grouting holes, and grout is injected into roadbed AB group filling through the perforated tubes or the sleeve valve tubes so that the grout is diffused in roadbed AB materials to form piles to form the peripheral dendritic reinforced shield structure;
vertically punching a hole upwards in the top of the pipe wall of the shield structure to the main end thorn, injecting an adhesive into the hole and planting a reinforcing rib, and connecting the shield structure and the main end thorn;
pouring lightweight aggregate concrete into the cavity of the shield structure to firmly integrate the reinforced shield structure with the existing end thorn to form an enhanced end thorn structure;
and (4) removing the template, repairing the cable trough outside the cable, and recovering the side slope.
8. The method of claim 7, wherein the maximum distance between the main end stab and the shield structure is no more than 50 mm.
9. The construction method according to claim 7, wherein the depth of the grout hole is 1m to 1.5 m.
10. The construction method according to claim 7, wherein the depth of the holes punched at the bottom of the main end thorn is 40 to 50cm, the hole pitch is 40 to 80cm, and the diameter of the tendon is 16 to 28 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010414987.7A CN111535079B (en) | 2020-05-15 | 2020-05-15 | End-stabbing anchoring force enhancing structure and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010414987.7A CN111535079B (en) | 2020-05-15 | 2020-05-15 | End-stabbing anchoring force enhancing structure and construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111535079A true CN111535079A (en) | 2020-08-14 |
| CN111535079B CN111535079B (en) | 2021-07-20 |
Family
ID=71975749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010414987.7A Active CN111535079B (en) | 2020-05-15 | 2020-05-15 | End-stabbing anchoring force enhancing structure and construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111535079B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112281548A (en) * | 2020-10-19 | 2021-01-29 | 西南交通建设集团股份有限公司 | Construction method of large-gradient ballast bed |
| CN113718558A (en) * | 2021-09-16 | 2021-11-30 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Reinforcing method for rear anchoring structure of longitudinal connecting plate type ballastless track platform |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2356880A (en) * | 1999-12-01 | 2001-06-06 | Terram Ltd | Rail support structures and geosynthetics |
| US20120286055A1 (en) * | 2011-05-12 | 2012-11-15 | Pci-Trammco, Llc. | Systems and related methods involving isolation tubs |
| CN104452502A (en) * | 2014-12-15 | 2015-03-25 | 中铁第四勘察设计院集团有限公司 | Construction method for renovating horizontal deformation hazards of terminal spines of ballastless tracks |
| CN105887586A (en) * | 2016-04-29 | 2016-08-24 | 中铁第四勘察设计院集团有限公司 | Low implantation line double-wire section terminal spine type bearing rail beam limiting structure in medium and low speed magnetic levitation transportation engineering |
| CN206328641U (en) * | 2016-11-26 | 2017-07-14 | 安徽铁创新材料科技有限公司 | A kind of filling plate-type ballastless track of use emulsified asphalt slurry |
-
2020
- 2020-05-15 CN CN202010414987.7A patent/CN111535079B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2356880A (en) * | 1999-12-01 | 2001-06-06 | Terram Ltd | Rail support structures and geosynthetics |
| US20120286055A1 (en) * | 2011-05-12 | 2012-11-15 | Pci-Trammco, Llc. | Systems and related methods involving isolation tubs |
| CN104452502A (en) * | 2014-12-15 | 2015-03-25 | 中铁第四勘察设计院集团有限公司 | Construction method for renovating horizontal deformation hazards of terminal spines of ballastless tracks |
| CN105887586A (en) * | 2016-04-29 | 2016-08-24 | 中铁第四勘察设计院集团有限公司 | Low implantation line double-wire section terminal spine type bearing rail beam limiting structure in medium and low speed magnetic levitation transportation engineering |
| CN206328641U (en) * | 2016-11-26 | 2017-07-14 | 安徽铁创新材料科技有限公司 | A kind of filling plate-type ballastless track of use emulsified asphalt slurry |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112281548A (en) * | 2020-10-19 | 2021-01-29 | 西南交通建设集团股份有限公司 | Construction method of large-gradient ballast bed |
| CN113718558A (en) * | 2021-09-16 | 2021-11-30 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Reinforcing method for rear anchoring structure of longitudinal connecting plate type ballastless track platform |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111535079B (en) | 2021-07-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102926304B (en) | Reinforcement method and reinforcement structure for treating railway soft soil roadbed settlement overweight before operation | |
| CN102828518B (en) | Construction method for manual hole digging support pile prestress anchor cable anchoring structure | |
| CN104389320B (en) | Construction method of pile foundation anchor rope prestress high retaining wall | |
| CN106012697A (en) | Ballastless track roadbed high polymer injection lifting method | |
| CN206902479U (en) | Ballastless track roadbed Deformation control is worn under a kind of aqueduct with repairing structure | |
| CN104195911A (en) | Widened embankment structure with beside-water cliff high retaining wall fill section and construction method of widened embankment structure | |
| CN111535079B (en) | End-stabbing anchoring force enhancing structure and construction method | |
| CN109736346A (en) | Steel anchor tube reinforces weathered rock formation reinforcement balance weight retaining wall structure and construction method | |
| CN107130475A (en) | Ballastless track roadbed Deformation control is worn under a kind of aqueduct with repairing structure and method | |
| CN105350988B (en) | Tunnel Base reinforcement means | |
| KR101973697B1 (en) | Apparatus for ground restoration and reinforcement by multi-injection of urethane with high-density and rapid expansion properties and construction method using the same | |
| CN108842523A (en) | In-strong expansive rock or expansive soils ballastless track of high-speed railway foundation stabilization construction and construction method | |
| CN103074882A (en) | Construction method for reinforcing island-type perennial frozen-soil foundation by adopting gravel piles | |
| CN107100160B (en) | A kind of construction technology for lower storage reservoir check dam vibro-replacement stone column | |
| CN110644461A (en) | Foundation treatment method | |
| CN105019427A (en) | Bolting-grouting integrated treatment method for railway tunnel base disease | |
| CN109837811B (en) | Counterforce structure for transverse deviation rectification of ballastless track of roadbed section and manufacturing method thereof | |
| CN112127225A (en) | Anti-floating self-repairing anchoring device, light soil roadbed structure and construction method | |
| CN107100179A (en) | Light-duty combination retaining structure and the method for administering a wide range of tall earth fill engineering | |
| CN204238239U (en) | Pile foundation prestressd anchor cable height wall-retaining structure | |
| CN109681212B (en) | Excavation construction method of small-section loess tunnel | |
| CN208472713U (en) | A kind of composite structure mini pile for administering small-sized landslide | |
| CN1046014C (en) | Construction method for soil bulkhead structure | |
| CN113718767B (en) | Eccentric hook-shaped expansion type pre-stressed anchoring structure and anchoring method thereof | |
| CN213013834U (en) | Multi-angle oblique crossing reinforcing structure for crack space of old cement pavement |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |