CN111719571A - Construction method for foam concrete reinforcement of confined space high-fill roadbed side slope - Google Patents
Construction method for foam concrete reinforcement of confined space high-fill roadbed side slope Download PDFInfo
- Publication number
- CN111719571A CN111719571A CN202010654008.5A CN202010654008A CN111719571A CN 111719571 A CN111719571 A CN 111719571A CN 202010654008 A CN202010654008 A CN 202010654008A CN 111719571 A CN111719571 A CN 111719571A
- Authority
- CN
- China
- Prior art keywords
- foam concrete
- roadbed
- concrete
- construction method
- meters
- 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.)
- Pending
Links
Images
Classifications
-
- 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
- E02D17/20—Securing of slopes or inclines
- E02D17/207—Securing of slopes or inclines with means incorporating sheet piles or piles
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
- E01C3/04—Foundations produced by soil stabilisation
-
- 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
-
- 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
- E02D5/02—Sheet piles or sheet pile bulkheads
- E02D5/03—Prefabricated parts, e.g. composite sheet piles
- E02D5/04—Prefabricated parts, e.g. composite sheet piles made of steel
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
-
- 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
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Civil Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a construction method for reinforcing foam concrete of a high-fill roadbed side slope in a limited space, which comprises the steps of breaking a concrete pavement of a part to be reinforced, digging out the filling soil without slope protection measures on the upper part of a retaining wall by using an excavator, excavating high-fill parts with serious water loss in a layered mode, arranging five-to seven-grade slope excavation platforms close to a roadbed of a reserved pavement, inserting Larsen steel sheet piles between the slope excavation platforms and the reserved pavement, pouring a foam concrete roadbed by taking a support mold on the outer side of the foam concrete as a disassembly-free template, and finally pouring the concrete pavement.
Description
Technical Field
The invention relates to the technical field of high fill roadbed edge construction in municipal public works, in particular to a construction method for reinforcing a high fill roadbed side slope in a limited space by using foam concrete.
Background
In the prior art, a ramp of a highway is filled with a filling material to form a roadbed, a retaining wall is usually constructed to form a slope protection, the retaining wall is usually a gravity type retaining wall which is selected from a natural foundation and has no pile foundation, so that the height of the retaining wall can not be too high, after a certain height is constructed, soil filling treatment is adopted on the upper part, grass is planted on the upper part, the grass is also planted on the side slope, the grass is also planted due to long-term rain or debris flow, the water and soil loss of the side slope is serious, the bottom of the road is directly washed and hollowed, the roadbed of the road section collapses, the retaining wall also has sedimentation and horizontal displacement to a great extent, vehicles cannot run, otherwise, the integral collapse of the retaining wall can occur, and the roadbed of the highway must be reinforced.
Disclosure of Invention
Aiming at the defects of roadbed collapse, influence on vehicle running and the like in the prior art, the invention aims to provide the construction method for the foam concrete reinforcement of the high-fill roadbed side slope in the limited space, which has light concrete weight, effectively protects the original retaining wall and prevents the retaining wall from tipping.
In order to solve the technical problem, the invention provides a construction method for reinforcing foam concrete of a high fill roadbed side slope in a limited space, which comprises the following construction steps:
step 1) breaking an original concrete pavement to be reinforced;
step 2) excavating the roadbed filling soil which is not provided with slope protection measures on the upper part of the roadbed retaining wall by using an excavator, excavating filling parts with serious water and soil loss in a layered mode, and reserving filling parts on the lower part of the roadbed retaining wall, wherein the original filling roadbed has the width of 10 meters, the length of 30 meters and the height of 4.37-7.86 meters;
step 3) a fifth-seventh grade slope-releasing excavation platform is arranged on the roadbed reserved close to the filling;
step 4), inserting Larsen steel sheet piles between the slope-releasing excavation platform and the reserved pavement;
step 5), preparing foam concrete, pouring foam concrete foundations layer by layer, and pouring a C40 foam concrete pavement with the thickness of 26cm to repair and reinforce the pavement and recover the traffic;
in the step 5, a formwork is arranged on the outer side of the foam concrete, and the formwork is a non-dismantling formwork;
and 6) plastering the bottom of the non-dismantling template and the soil filling position of the retaining wall by using M15 cement mortar, wherein the gradient is 1%, arranging a drainage ditch at the top of the retaining wall, and timely draining to a nearby municipal pipe network when rainwater scours later.
Further, in the five-level to seven-level slope excavation platform in the step 3, the width of each level of slope excavation platform is 1 meter, the height of each level of slope excavation platform is 0.8 meter, and the five-level to seven-level excavation platform and the foam concrete to be poured in the step 5 form an occlusion structure so that the roadbed is more stable.
Further, the original roadbed filling in the step 2 is 13-16 meters high, 16-21 meters wide and 30 meters long, the roadbed filling is reinforced by two parts due to water and soil loss, the height of the filling reserved at the lower part of the roadbed retaining wall is 6-9 meters, the width is 6-10 meters and the length is 30 meters; and the upper part filling without slope protection measures adopts a layered excavation mode by using an excavator, the excavated part of the filling with the width of 8-10 m, the length of 30 m and the height of 4.37-7.86 m is excavated, and foam concrete is poured to replace the original road foundation soil with light foam concrete.
Further, the length of the Larsen steel sheet pile in the step 4 is 5 meters, and the type is SP-III type.
Further, exempt from to tear open the template for prefabricated plain concrete panel, this prefabricated plain concrete panel is by a plurality of fritts prefabricated plain concrete panel at every layer dislocation arrangement vertical assemble and form, this a plurality of fritts prefabricated plain concrete panel size: the length is 60cm, the width is 20cm, and the thickness is 6 cm.
Furthermore, when the small prefabricated plain concrete panels are prefabricated, four iron hooks formed by A8 round steel bars are pre-embedded, and the iron hooks are uniformly arranged at the upper part and the lower part which are 10cm away from the edges of the small prefabricated plain concrete panels.
Furthermore, L-shaped steel angles corresponding to the small prefabricated plain concrete panels in number are vertically inserted into the foam concrete, the upper and lower iron hooks of the small prefabricated plain concrete panels and the vertical L-shaped steel angles inserted into the foam concrete are welded by adopting A8 round steel bars, the A8 round steel bars are welded with the L-shaped steel bars in an upper and lower way, and the A8 round steel bars, the iron hooks and the L-shaped steel bars form a stable triangular structure.
Furthermore, the opening surface of the L-shaped angle steel is arranged opposite to the small prefabricated plain concrete panels, each L-shaped angle steel corresponds to one small prefabricated plain concrete panel, the distance between every two L-shaped angle steels is 60cm, the cross section dimension of each L-shaped angle steel is 100mmX100mm X8mm, and the inserting height of each L-shaped angle steel is consistent with the thickness of the replaced foam concrete, so that the L-shaped angle steel is buried in the foam concrete after the foam concrete is poured.
Further, the physical parameter indexes of the foam concrete are as follows: wet volume weight <6.3KN/m3The design strength is 1MPa, and the foam concrete mixing ratio is cement: water: blowing agent (Kg) 550: 300: 1, the foam concrete is poured in layers, the foam concrete is poured by adopting a process of pouring cement paste, and a cement paste mixer, a grouting pump and a grouting pipe are used.
Compared with the prior art, the scheme of the invention at least comprises the following beneficial effects:
(1) the construction method of the invention comprises the steps of breaking the concrete pavement of the part to be reinforced; digging out the filling soil on the upper part of the retaining wall without slope protection measures by using an excavator; carrying out layered excavation on the high fill with serious water and soil loss, and arranging five to seven grades of slope-releasing excavation platforms close to the roadbed of the reserved road surface; and in addition, the original foundation is replaced by the foam concrete, the weight of the roadbed is reduced, and the accumulated settlement of the roadbed is reduced, so that the cost for strengthening the roadbed is reduced, and the foam concrete has low water absorption rate, relatively closed independent bubbles and good integrity, so that the roadbed has certain waterproof performance.
(2) Before the roadbed is constructed again, slope excavation platforms need to be set, the width of each excavation platform is 1 meter, the height of each excavation platform is 0.8 meter, and the five-to seven-grade excavation platforms and foam concrete to be poured subsequently form an occlusion structure, so that the high-fill roadbed is more stable.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.
FIG. 1 is a schematic diagram of the construction steps of the construction method for foam concrete reinforcement of the confined space high fill roadbed side slope;
FIG. 2 is a cross-sectional view of a reinforced roadbed by the construction method for reinforcing foam concrete on the side slope of the confined space high fill roadbed;
FIG. 3 is a vertical-face assembly drawing of a formwork of the construction method for reinforcing foam concrete of a high-fill roadbed slope in a confined space;
FIG. 4 is an enlarged schematic view of a formwork L-shaped angle steel plane of the construction method for reinforcing foam concrete of a high-fill roadbed slope in a limited space.
The method comprises the steps of slope releasing and excavating a platform 1, reserving a road surface 2, Larsen steel sheet piles 3, a formwork 4, a plurality of small prefabricated plain concrete panels 41, foam concrete 5, A8 round steel bars 6, iron hooks 7 and L-shaped angle steel 8.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.
As shown in figure 1, the invention provides a construction method for reinforcing foam concrete 5 of a confined space high fill roadbed slope, which comprises the following construction steps:
step 1) breaking an original concrete pavement to be reinforced;
step 2) excavating the roadbed filling soil which is not provided with slope protection measures on the upper part of the roadbed retaining wall by using an excavator, excavating filling parts with serious water and soil loss in a layered mode, and reserving filling parts on the lower part of the roadbed retaining wall, wherein the original filling parts are 10 meters in width, 30 meters in length and 4.37-7.86 meters in height;
step 3) a five-grade to seven-grade slope-releasing excavation platform 1 is arranged on the roadbed reserved close to the filling;
step 4), inserting Larsen steel sheet piles 3 between the slope-releasing excavation platform 1 and the reserved pavement 2;
step 5) preparing foam concrete 5, pouring a roadbed of the foam concrete 5 in layers, pouring a C40 foam concrete 5 pavement with the thickness of 26cm to repair and reinforce the pavement and recover the traffic, so that the vehicle can run normally, reducing the self weight of the roadbed and reducing the accumulated settlement of the roadbed by replacing the original roadbed with the foam concrete 5, thereby reducing the cost for reinforcing and treating the soft soil foundation;
and 6) plastering the bottom of the non-dismantling template and the soil filling position of the retaining wall by using M15 cement mortar, wherein the gradient is 1%, arranging a drainage ditch at the top of the retaining wall, and timely draining to a nearby municipal pipe network when rainwater scours later.
The invention can reinforce the roadbed through the five steps, and the construction method is simple and safe.
The foam concrete is adopted, and has the characteristics of light weight, small density, remarkable economic benefit, low cost and convenient construction, the main materials of the foam concrete are cement, sand and the like, the raw materials are wide, the materials are available, the foam concrete can be produced on site, the price is low, the cost is saved, the water absorption rate of the foam concrete is low, and the foam concrete has relatively closed independent bubbles and good integrity, so that the foam concrete has certain waterproof performance.
When the concrete construction method is implemented, the thickness of the original concrete pavement is 26 cm.
As shown in fig. 2, a formwork is arranged on the outer side of the foam concrete 5, the formwork is a non-dismantling formwork, and the non-dismantling formwork is adopted as the formwork, so that the formwork has better stress intensity and shape freedom, is also beneficial to reducing the construction cost, can greatly reduce the procedures of the formwork engineering in the construction, and plays the roles of saving labor and improving the construction efficiency.
In the five-level to seven-level slope-laying excavation platform 1 in the step 3, the width of each level of slope-laying excavation platform 1 is 1 meter, the height is 0.8 meter, and the five-level to seven-level excavation platform and the foam concrete 5 to be poured in the step 5 form an occlusion structure, so that the roadbed is more stable, the high fill roadbed is more stable, the safety is improved, and meanwhile, the highway roadbed is more stable and has long service life.
In the step 2, the original roadbed filling is 13-16 meters high, 16-21 meters wide and 30 meters long, the roadbed filling is reinforced by two parts due to water and soil loss, the height of the roadbed retaining wall is 6-9 meters, the roadbed retaining wall is 6-10 meters wide and 30 meters long; the upper filling without slope protection measures adopts a layered excavation mode by an excavator, the excavated width is 8-10 m, the length is 30 m, and the height is 4.37-7.86 m, foam concrete 5 is excavated, so that the original road foundation soil is replaced by light foam concrete 5 and is replaced by foam concrete 5, and the effect of reducing foundation settlement is achieved.
In the step 4, the length of the Larsen steel sheet pile 3 is 5 meters, and the model is SP-III.
As shown in fig. 3, the disassembly-free form is a prefabricated plain concrete panel, the prefabricated plain concrete panel is composed of a plurality of small prefabricated plain concrete panels 41 which are arranged in a staggered manner on each layer and are vertically assembled, the thickness of the prefabricated plain concrete panel is 6cm, and the prefabricated plain concrete panels 41 are in the size: the length is 60cm, the width is 20cm, the thickness is 6cm, and the height of the non-dismantling template is 51 meters higher than that of the required pouring foam concrete when the foam concrete 5 is poured each time.
As shown in fig. 4, when a plurality of small prefabricated plain concrete panels 41 are prefabricated, four iron hooks 7 made of round steel bars are pre-embedded, and the iron hooks 7 are uniformly arranged at the upper and lower positions 10cm away from the edge of the plain concrete panel.
L angle steel 8 corresponding to the number of small prefabricated plain concrete panels is inserted in the vertical direction of the foam concrete 5, the upper and lower iron hooks 7 of the small prefabricated plain concrete panels 41 and the vertical L angle steel 8 inserted in the foam concrete 5 are welded by adopting A8 round steel bars 6, the A8 round steel bars 6 are welded with the L angle steel 8 for the upper and lower four ways, and the A8 round steel bars 6, the iron hooks 7 and the L angle steel 8 form a stable triangular structure, so that a more stable disassembly-free formwork system is formed, and the foam concrete 5 can be used as a formwork in the pouring process conveniently.
When the embodiment of the invention is specifically realized, the A8 round steel bars 6 are arranged in four ways, and can be directly welded with the L-shaped steel angles 8, and the A8 round steel bars 6 can also be welded around the L-shaped steel angles 8.
The opening surface of the L-shaped steel 8 is arranged opposite to the small prefabricated plain concrete panels 41, each L-shaped steel 8 corresponds to one small prefabricated plain concrete panel, the distance between every two L-shaped steel 8 is 60cm, the cross section dimension of each L-shaped steel 8 is 100mm X8mm, and the inserting height of each L-shaped steel 8 is consistent with the thickness of the replacement foam concrete 5, so that the L-shaped steel 8 is buried in the foam concrete 5 after the foam concrete 5 is poured, and the L-shaped steel 8 is just buried in the foam concrete 5, so that special treatment is not needed, the working procedures are reduced, and the labor force is reduced.
The foam concrete 5 is a novel light, heat-insulating and heat-insulating material prepared by preparing foam from a foaming agent aqueous solution by a physical mechanical method, adding the foam into slurry prepared from cement, water and the like, uniformly mixing, casting, molding and maintaining. Because the material contains a large number of closed pores, the material shows good physical and mechanical properties, namely functions of light weight, heat preservation, heat insulation, sound insulation and the like.
Foams are dispersions consisting of fine air bubbles separated by fine liquid films.
Wherein, the physical parameter indexes of the foam concrete 5 are as follows: wet volume weight less than 6.3KN/m3The design strength is 1MPa, and the mixing proportion of the foam concrete 5 is cement: water: blowing agent (Kg) 550: 300: the foam concrete 5 is poured in layers, the foam concrete 5 is poured by adopting a process of pouring cement slurry, a cement slurry mixer, a grouting pump and a grouting pipe are used, the foam concrete 5 is formed by fully foaming a foaming agent in a mechanical mode through a foaming system of a foaming machine, the foam is uniformly mixed with the cement slurry through the slurry mixer, then the foam concrete 5 is formed by cast-in-place construction through a pumping system of the foaming machine, the main materials of the foam concrete 5 are cement, water and the foaming agent, the raw materials are wide, the materials can be obtained locally in any region, the foam concrete is produced on site, the price is low, and the cost is saved.
The volume of the light foam concrete 5 is replaced by 1567 cubic meters, 22177 cubic meters of the original roadbed earthwork is excavated, 320 square meters of the C40 concrete pavement are excavated and repaired, and the traffic is recovered.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, therefore, the present invention is not limited by the appended claims.
Claims (10)
1. The construction method for reinforcing the foam concrete of the high-fill roadbed slope in the limited space is characterized by comprising the following steps of: the method comprises the following construction steps:
step 1) breaking an original concrete pavement to be reinforced;
step 2) excavating the roadbed filling soil which is not provided with slope protection measures on the upper part of the roadbed retaining wall by using an excavator, excavating filling parts with serious water and soil loss in a layered mode, and reserving filling parts on the lower part of the roadbed retaining wall, wherein the original filling roadbed has the width of 10 meters, the length of 30 meters and the height of 4.37-7.86 meters;
step 3) a fifth-seventh grade slope-releasing excavation platform is arranged on the roadbed reserved close to the filling;
step 4), inserting Larsen steel sheet piles between the slope-releasing excavation platform and the reserved pavement;
step 5), preparing foam concrete, pouring foam concrete foundations layer by layer, and pouring a C40 foam concrete pavement with the thickness of 26cm to repair and reinforce the pavement and recover the traffic;
and 6) plastering the bottom of the non-dismantling template and the soil filling position of the retaining wall by using M15 cement mortar, wherein the gradient is 1%, arranging a drainage ditch at the top of the retaining wall, and timely draining to a nearby municipal pipe network when rainwater scours later.
2. The construction method for the foam concrete reinforcement of the confined space high fill subgrade side slope according to the claim 1, is characterized in that: and 5, arranging a formwork on the outer side of the foam concrete, wherein the formwork is a non-dismantling formwork.
3. The construction method for the foam concrete reinforcement of the confined space high fill subgrade side slope according to the claim 1, is characterized in that: in the five-level to seven-level slope excavation platforms in the step 3, the width of each level of slope excavation platform is 1 meter, the height of each level of slope excavation platform is 0.8 meter, and the five-level to seven-level excavation platforms and the foam concrete to be poured in the step 5 form an occlusion structure so that the roadbed is more stable.
4. The construction method for the foam concrete reinforcement of the confined space high fill subgrade side slope according to the claim 1, is characterized in that: in the step 2, the original roadbed filling is 13-16 meters high, 16-21 meters wide and 30 meters long, the roadbed filling is reinforced by two parts due to water and soil loss, the height of the roadbed retaining wall is 6-9 meters, the roadbed retaining wall is 6-10 meters wide and 30 meters long; and the upper part filling without slope protection measures adopts a layered excavation mode by using an excavator, the excavated part of the filling with the width of 8-10 m, the length of 30 m and the height of 4.37-7.86 m is excavated, and foam concrete is poured to replace the original road foundation soil with light foam concrete.
5. The construction method for the foam concrete reinforcement of the confined space high fill subgrade side slope according to the claim 1, is characterized in that: and 4, the length of the Larsen steel plate pile is 5 meters, and the model is SP-III.
6. The construction method for the foam concrete reinforcement of the confined space high fill subgrade side slope according to claim 2, characterized in that: exempt from to tear open the template and be prefabricated plain concrete panel, this prefabricated plain concrete panel is by a plurality of fritts prefabricated plain concrete panel at every layer dislocation arrangement vertical assemble and form, this a plurality of fritts prefabricated plain concrete panel size: the length is 60cm, the width is 20cm, and the thickness is 6 cm.
7. The construction method for the foam concrete reinforcement of the confined space high fill subgrade side slope according to the claim 6, is characterized in that: when the plurality of small prefabricated plain concrete panels are prefabricated, four iron hooks formed by A8 round steel bars are pre-buried, and the iron hooks are uniformly arranged at the upper part and the lower part which are 10cm away from the edges of the plurality of small prefabricated plain concrete panels.
8. The construction method for the foam concrete reinforcement of the confined space high fill subgrade side slope according to the claim 1, is characterized in that: l-shaped steel angles corresponding to the small prefabricated plain concrete panels in number are vertically inserted into the foam concrete, the upper and lower iron hooks of the small prefabricated plain concrete panels and the vertical L-shaped steel angles inserted into the foam concrete are welded by adopting A8 round steel bars, the A8 round steel bars are welded with the L-shaped steel bars in an upper and lower way, and a stable triangular structure is formed by the A8 round steel bars, the iron hooks and the L-shaped steel bars.
9. The construction method for the foam concrete reinforcement of the confined space high fill subgrade side slope according to the claim 8, is characterized in that: the opening surfaces of the L-shaped steel are arranged opposite to the small prefabricated plain concrete panels, each L-shaped steel corresponds to one small prefabricated plain concrete panel, the distance between every two L-shaped steel is 60cm, the cross section size of the L-shaped steel is 100mm X8mm, and the inserting height of the L-shaped steel is consistent with the thickness of the replaced foam concrete, so that the L-shaped steel is buried in the foam concrete after the foam concrete is poured.
10. The construction method for the foam concrete reinforcement of the confined space high fill subgrade side slope according to the claim 1, is characterized in that: the physical parameter indexes of the foam concrete are as follows: wet volume weight less than 6.3KN/m3The design strength is 1MPa, and the foam concrete mixing ratio is cement: water: blowing agent (Kg) 550: 300: 1, pouring the foam concrete layer by layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010654008.5A CN111719571A (en) | 2020-07-08 | 2020-07-08 | Construction method for foam concrete reinforcement of confined space high-fill roadbed side slope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010654008.5A CN111719571A (en) | 2020-07-08 | 2020-07-08 | Construction method for foam concrete reinforcement of confined space high-fill roadbed side slope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111719571A true CN111719571A (en) | 2020-09-29 |
Family
ID=72572086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010654008.5A Pending CN111719571A (en) | 2020-07-08 | 2020-07-08 | Construction method for foam concrete reinforcement of confined space high-fill roadbed side slope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111719571A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112832094A (en) * | 2021-02-01 | 2021-05-25 | 中铁四局集团第二工程有限公司 | Construction method for filling intercommunicating ramp by using foam light soil |
| CN115126282A (en) * | 2022-07-25 | 2022-09-30 | 中国十九冶集团有限公司 | Post-reinforcement method for permanent support of adjacent important building structures |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005120607A (en) * | 2003-10-14 | 2005-05-12 | Shouda:Kk | Road construction method, and concrete block and superstructure work slab used for the same |
| CN103046446A (en) * | 2013-01-17 | 2013-04-17 | 长沙理工大学 | Treatment structure at joint part of reconstruction and extension project of highway |
| CN107386317A (en) * | 2017-07-03 | 2017-11-24 | 浙江大学城市学院 | Foam concrete lightweight barricade and construction method are excavated after a kind of first precompressed of deep ultra-soft soil |
| CN109252542A (en) * | 2018-11-14 | 2019-01-22 | 山东大学 | A kind of root pile lightweight barricade and its construction method for road widening |
| CN110374134A (en) * | 2019-07-15 | 2019-10-25 | 浙江交工集团股份有限公司 | A kind of combined member increased suitable for retaining wall and construction method |
| CN110924405A (en) * | 2019-11-28 | 2020-03-27 | 中铁广州工程局集团有限公司 | Construction method of slope protection structure |
| CN111304987A (en) * | 2020-03-31 | 2020-06-19 | 广西路桥工程集团有限公司 | High-speed foam light soil roadbed structure in mountain area |
-
2020
- 2020-07-08 CN CN202010654008.5A patent/CN111719571A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005120607A (en) * | 2003-10-14 | 2005-05-12 | Shouda:Kk | Road construction method, and concrete block and superstructure work slab used for the same |
| CN103046446A (en) * | 2013-01-17 | 2013-04-17 | 长沙理工大学 | Treatment structure at joint part of reconstruction and extension project of highway |
| CN107386317A (en) * | 2017-07-03 | 2017-11-24 | 浙江大学城市学院 | Foam concrete lightweight barricade and construction method are excavated after a kind of first precompressed of deep ultra-soft soil |
| CN109252542A (en) * | 2018-11-14 | 2019-01-22 | 山东大学 | A kind of root pile lightweight barricade and its construction method for road widening |
| CN110374134A (en) * | 2019-07-15 | 2019-10-25 | 浙江交工集团股份有限公司 | A kind of combined member increased suitable for retaining wall and construction method |
| CN110924405A (en) * | 2019-11-28 | 2020-03-27 | 中铁广州工程局集团有限公司 | Construction method of slope protection structure |
| CN111304987A (en) * | 2020-03-31 | 2020-06-19 | 广西路桥工程集团有限公司 | High-speed foam light soil roadbed structure in mountain area |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112832094A (en) * | 2021-02-01 | 2021-05-25 | 中铁四局集团第二工程有限公司 | Construction method for filling intercommunicating ramp by using foam light soil |
| CN115126282A (en) * | 2022-07-25 | 2022-09-30 | 中国十九冶集团有限公司 | Post-reinforcement method for permanent support of adjacent important building structures |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207512745U (en) | A kind of caisson device and its foundation pit structure | |
| CN211144503U (en) | High steep topography bridge tunnel meets section open cut tunnel and connects long structure | |
| CN111719571A (en) | Construction method for foam concrete reinforcement of confined space high-fill roadbed side slope | |
| CN211228591U (en) | Steel fiber concrete gravity type retaining wall protective structure | |
| CN210216254U (en) | Concrete guardrail structure | |
| CN113308955B (en) | Construction method of cast-in-place concrete full-protection foam light soil wide-spliced embankment | |
| CN114775352A (en) | Widening structure for embankment wall section of existing roadbed in riverside and construction method | |
| CN109252542B (en) | Tree root pile light retaining wall for road widening and construction method thereof | |
| CN203160254U (en) | Pit support structure | |
| CN114197261A (en) | Road widening roadbed filling method for water-immersed road section | |
| CN212956576U (en) | Confined space high fill roadbed side slope foam concrete's reinforced structure | |
| CN111851512A (en) | Construction method of deep foundation pit retaining wall structure and underground space structure | |
| CN218116337U (en) | Be used for permeating earth and rockfill dam and widen seepage prevention structure | |
| CN112144425B (en) | Box culvert drainage ditch pouring method located at high water level and in sandy soil environment | |
| CN211421139U (en) | Shield constructs well crown beam bearing structure | |
| CN210315908U (en) | Immersed tube type inspection well | |
| CN113585224A (en) | Immersed tube reinforcement gravel pile construction method for reinforcing soft foundation | |
| CN209636573U (en) | A kind of assembled self-balancing channel design system | |
| CN209555946U (en) | A kind of reparation structure that high embankment collapses | |
| CN218148496U (en) | Integral cantilever type barricade that has filter-tank and escape canal | |
| CN220486172U (en) | Reinforcing structure suitable for mountain area highway bank section disaster damage roadbed | |
| CN220520990U (en) | Deep miscellaneous soil roadbed supporting structure that fills | |
| AU2021105983A4 (en) | A Construction Method for Reinforced-hoop Gravel Piles by Means of Immersed Tubes for Strengthening Soft Foundations | |
| CN219604048U (en) | Existing railway high-filling roadbed widening structure | |
| CN220079740U (en) | Stable tunnel anchor |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200929 |