CN112323559A - Transverse new and old roadbed connecting structure and construction method - Google Patents
Transverse new and old roadbed connecting structure and construction method Download PDFInfo
- Publication number
- CN112323559A CN112323559A CN202011218533.9A CN202011218533A CN112323559A CN 112323559 A CN112323559 A CN 112323559A CN 202011218533 A CN202011218533 A CN 202011218533A CN 112323559 A CN112323559 A CN 112323559A
- Authority
- CN
- China
- Prior art keywords
- roadbed
- old
- new
- layer
- connection structure
- 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
- 238000010276 construction Methods 0.000 title claims abstract description 30
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 35
- 239000002699 waste material Substances 0.000 claims abstract description 35
- 239000000463 material Substances 0.000 claims abstract description 28
- 239000002689 soil Substances 0.000 claims abstract description 25
- 239000004575 stone Substances 0.000 claims abstract description 11
- 238000012216 screening Methods 0.000 claims abstract description 6
- 238000003825 pressing Methods 0.000 claims description 5
- 238000010899 nucleation Methods 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000007921 spray Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 19
- 239000010410 layer Substances 0.000 description 31
- 241001464837 Viridiplantae Species 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 230000009467 reduction Effects 0.000 description 5
- 238000004134 energy conservation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 4
- 239000004567 concrete Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- 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
- E01C3/06—Methods or arrangements for protecting foundations from destructive influences of moisture, frost or vibration
-
- 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
-
- 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)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Road Paving Structures (AREA)
Abstract
The application relates to a transverse new and old roadbed connecting structure and a construction method, wherein the transverse new and old roadbed connecting structure comprises an old roadbed and a new roadbed fixedly connected with the old roadbed; a plurality of steps are transversely arranged on the side slope of the old roadbed step by step, geogrids are paved on the steps, and a reinforcing net rack fixedly connected with the old roadbed is obliquely arranged on the side slope of the old roadbed; the new roadbed is formed by tamping filling materials containing a part of screened waste earth and stone square stock layer by layer. The construction method comprises the following steps: measuring and lofting the outer side of the old roadbed; removing surface soil, and digging steps on the old roadbed and the outer soil layer step by step; screening the dug waste earthwork material; laying geogrids and reinforcing net racks; and backfilling the backfill material and the water-permeable roadbed filling layer by layer and tamping. This application belongs to road construction's technical field, and it enables the roadbed structure after widening more stable not fragile utilization waste soil square stock, plays energy-concerving and environment-protective effect.
Description
Technical Field
The application relates to the technical field of road construction, in particular to a transverse new and old roadbed connecting structure and a construction method.
Background
At present, with the rapid development of urban construction, most of highway functions cannot meet the ever-increasing traffic demands of society, and the traffic pressure of each road is high, so that the road traffic jam is easily caused. Therefore, the construction of the overpass and the widening, upgrading and reconstruction of the road are the trends of urban traffic development. The settlement of the roadbed of the original highway is basically finished after years of repeated rolling and use, the connection part of the new roadbed and the old roadbed is easy to damage due to the uneven settlement of the new roadbed and the old roadbed, and the data waste and the damage to the environment are easily caused by the re-renovation of the widened roadbed.
With respect to the related art in the above, the inventors consider that there is a disadvantage that the entire structure of the roadbed is easily damaged by settlement.
Disclosure of Invention
In order to enable the widened roadbed structure to be more stable and not easy to damage, and therefore the problems of energy waste caused by maintenance and overhaul and damage to the surrounding environment are reduced, the energy-saving and environment-friendly effects are achieved, and the application provides a new transverse roadbed connecting structure and a construction method.
In a first aspect, the following technical scheme is adopted for the transverse new and old roadbed connecting structure provided by the application:
a transverse new and old roadbed connecting structure comprises an old roadbed and a new roadbed fixedly connected with the old roadbed; a plurality of steps are transversely arranged on the side slope of the old roadbed step by step, geogrids are paved on the steps, and a reinforcing net rack fixedly connected with the old roadbed is obliquely arranged on the side slope of the old roadbed; the new roadbed is formed by tamping filling materials containing a part of screened waste earth and stone square stock layer by layer, and the geogrid extends on each layer of the new roadbed along the horizontal direction.
Through adopting above-mentioned technical scheme, there are reinforcement rack and geogrid between new road bed and the old road bed, and the step reciprocal anchorage interlock that new road bed passes through on the old road bed links together, what new road bed adopted is that the stopping of the abandonment earth stone square stock after the screening tamps step by step and forms, compare in the compaction of road roller, the new road bed that tamps step by step can be more durable not fragile, and can reduce the pollution of abandonment earth stone square stock to all ring borders, the required manpower of the abandonment earth stone square stock of having also reduced to move and mechanical equipment's use, energy saving and emission reduction's effect has been played.
Optionally, the steps are obliquely arranged on the side slopes of the old roadbed at an inclination of 3% to 5% towards the inner side of the old roadbed.
Through adopting above-mentioned technical scheme, old road bed and new road bed can be connected through the mutual tamp of the step of leanin to strengthen the connection between old road bed and the new road bed cut and fill the face, further strengthen the joint strength of whole road bed, make whole road bed be difficult for being damaged.
Optionally, the geogrid is provided with pressure bars at intervals, and the pressure bars are reversely buckled on the steps.
Through adopting above-mentioned technical scheme, the depression bar can compress tightly the geogrid on the step, makes the geogrid hug closely the surface of step, avoids the geogrid to produce pincher trees, distortion or pothole, influences the connection stability between old road bed and the new road bed.
Optionally, the reinforcing net rack comprises a reinforcing mesh obliquely arranged on the old roadbed side slope and a plurality of anchor rods with one ends vertically connected with the reinforcing mesh;
the other end of the anchor rod is obliquely inserted inwards into the old roadbed.
Through adopting above-mentioned technical scheme, the reinforcing bar net can increase the area of connection between backfill soil edge new road bed and the old road bed, and then improves joint strength, reduces the influence of subsiding for the structure of whole road bed is more stable difficult damaged.
Optionally, the step is provided with diagonal draw bars with two ends fixedly connected with the reinforcing mesh.
Through adopting above-mentioned technical scheme, the stay reinforcement enables the step formation joint relation of consolidating rack and old road bed on the one hand, and on the other hand still enables to consolidate the structural strength between the rack higher, and the reinforcement effect of rack is consolidated in improvement that can step forward makes the effect of preventing subsiding of whole road bed better.
Optionally, the top surface of the new roadbed is an inclined surface gradually becoming lower from the inner side to the outer side.
By adopting the technical scheme, the method has the advantages that,
optionally, the system also comprises a drainage pipe which is transversely buried at the base parts of the old roadbed and the new roadbed;
the drain pipe is gradually and obliquely downwards arranged from the inner side to the outer side.
Through adopting above-mentioned technical scheme, the rainwater that seeps into whole road bed bottom can be drawn away in the setting of drain pipe, gets rid of the rainwater outside road surface and the structure of whole road bed rapidly, is favorable to improving the performance of whole road bed, improves its life-span, makes the whole road bed that forms after new road bed and the old road bed are connected more durable.
Optionally, the top surface of the new roadbed is an inclined surface gradually becoming lower from the inner side to the outer side.
Through adopting above-mentioned technical scheme, the top surface slope of new road bed sets up, makes the rainwater on the new road bed top surface can outwards reduce the infiltration volume of moisture along the rivers on the new road bed top surface under the action of gravity, and then reduces the influence that the water yield caused whole road bed stability when big.
Optionally, the soil layer at the bottom of the new roadbed is a guniting reinforced soil layer.
Through adopting above-mentioned technical scheme, the bottom soil layer of new road bed is the reinforced soil layer of whitewashing, and the substructure that enables new road bed like this is more stable, is difficult for producing to subside, and then makes whole road bed more durable, reduces the number of times of renovating, and then reduces the waste of environmental pollution and resource because of the construction of renovating causes.
In a second aspect, the application further provides a construction method of the transverse new and old roadbed connecting structure, which adopts the following technical scheme:
a construction method of a transverse new and old roadbed connecting structure comprises the following steps:
measuring and lofting the outer side of the old roadbed;
removing surface soil, and digging steps on the old roadbed and the outer soil layer step by step;
screening the dug waste earthwork material to divide the waste earthwork material into backfill and waste material;
laying geogrids at the bottom of the new roadbed and laying a reinforcing net rack along the side slope of the old roadbed;
and backfilling the backfill material and the permeable roadbed filling layer by layer and tamping to form a new roadbed.
By adopting the technical scheme, the whole roadbed obtained by the construction method is firmer and not easy to damage, the number of subsequent maintenance or overhaul is reduced, and the effects of energy conservation and emission reduction are achieved.
Optionally, after construction, covering a layer of waste material on the side slope of the new roadbed, compacting, and carrying out wet spray seeding on green plants.
By adopting the technical scheme, the waste materials covered on the side slope of the new roadbed and the planted green plants can reduce the resources required for transporting the waste materials, the effects of energy conservation and emission reduction are achieved, the generated green plants can also be used for reinforcing the side slope of the new roadbed, the whole roadbed is more durable, and the roadbed is not easy to be damaged under the erosion of rainwater.
In summary, the present application includes at least one of the following beneficial technical effects:
1. there are reinforcing rack and geogrid between new road bed and the old road bed in this application, and the step reciprocal anchorage interlock that passes through on the old road bed of new road bed links together. In addition, the new roadbed is formed by ramming the screened fillers of the waste earth and stone square materials step by step, so that the energy loss caused by transporting the waste earth and stone square materials is reduced, the new roadbed which is rammed step by step is firmer and not easy to damage, the pollution of the waste earth and stone square materials to the surrounding environment can be reduced, the manpower and the use of mechanical equipment required for moving the waste earth and stone square materials are also reduced, and the effects of energy conservation and emission reduction are achieved;
2. the arrangement of the drainage pipe can lead rainwater seeped to the bottom of the whole roadbed, and the rainwater is quickly discharged out of the road surface and the structure of the whole roadbed, so that the use performance of the whole roadbed is improved, the service life of the roadbed is prolonged, and the whole roadbed formed after the new roadbed and the old roadbed are connected is more durable;
3. in addition, the waste materials covered on the side slope of the new roadbed and the green plants planted in the construction method can reduce resources required for transporting the waste materials, achieve the effects of energy conservation and emission reduction, and can also enable the generated root systems of the green plants to reinforce the side slope of the new roadbed, so that the whole roadbed is more durable and is not easy to be eroded by rainwater and damaged.
Drawings
Fig. 1 is a schematic view of an overall structure of a transverse old-new roadbed connection structure in the embodiment of the application.
Fig. 2 is a schematic view of the structure of the geogrid and the reinforcing grid for the purpose of the present embodiment.
Fig. 3 is a partially enlarged view of a portion a in fig. 2.
Fig. 4 is a block diagram of a construction method of a transverse old-new roadbed connecting structure in the embodiment of the application.
Description of reference numerals: 1. old roadbed; 11. a step; 111. a diagonal brace; 12. a geogrid; 121. a pressure lever; 13. reinforcing the net rack; 131. a reinforcing mesh; 132. an anchor rod; 2. a new roadbed; 3. and a water discharge pipe.
Detailed Description
The present application is described in further detail below with reference to figures 1-4. It can be understood that, during the construction of the connection between the old and new roadbed in the related art, the excavated waste earthwork material needs to be transported to a specially accepted muck and sludge accepting field, which increases the energy loss caused by the transportation of the waste earthwork material during the construction process, and the transportation vehicles can also affect the environment. Accordingly, the present application provides a lateral old and new roadbed connection structure to solve the above problems.
The embodiment of the application discloses horizontal new and old road bed connection structure. Referring to fig. 1, a lateral new and old roadbed connection structure includes an old roadbed 1, a new roadbed 2 and a drainage pipe 3. Wherein, new road bed 2 forms whole roadbed structure with old road bed 1 horizontal fixed connection, and drain pipe 3 transversely buries in old road bed 1 and new road bed 2's bottom and from the inboard slope setting that inclines gradually in the outside direction.
Referring to fig. 1 and 2, a plurality of steps 11 are transversely and gradually formed on the side slope of the old roadbed 1, the upper surfaces of the steps 11 are rectangular, the steps 11 extend along the longitudinal direction of the old roadbed 1, generally, the transverse width of the steps 11 is 2 to 3 meters, and in the embodiment of the application, the transverse width of the steps 11 is 2.5 meters.
In addition, the step 11 is obliquely arranged on the slope of the old roadbed 1 at an inclination of 3 to 5 percent towards the inner side direction of the old roadbed 1, so that the connection between the new roadbed 2 and the old roadbed 1 is in zigzag meshing fixed connection, the whole connection structure of the new roadbed and the old roadbed is more stable and is not easy to damage. The step 11 is laid with geogrid 12, and the slope of the old roadbed 1 is also provided with a reinforcing net frame 13 fixedly connected with the old roadbed 1 in an inclined way.
Referring to fig. 2 and 3, each step 11 is further provided with a diagonal brace 111, and two ends of the diagonal brace 111 respectively penetrate out from the upper surface of the previous step 11 and the side surface of the next step 11, and then are fixedly connected with a reinforcing net frame 13 to play a role in diagonal tension and reinforcement.
Referring to fig. 2 and 3, the geogrid 12 can be laid by using a bidirectional geogrid and extend on each layer of the new roadbed 2 along the horizontal direction, the geogrid 12 can bear large tensile stress and improve the bearing capacity of the roadbed structure, a remarkable construction effect is obtained, and the geogrid 12 can form a bonding effect with a soil body, so that the structure tensile resistance is improved, the settlement effect of the whole roadbed is improved, and the possibility of crack generation is reduced during practical application. Of course, in the actual construction process, in order to save the construction material, the geogrid 12 may be laid at a height of 2 m instead of every step 11. In addition, a pressing rod 121 is arranged on the geogrid 12 at intervals, the pressing rod 121 can be a U-shaped anchor rod, and the pressing rod 121 is inserted into the upper surface of the step 11 at intervals in an inverted buckling mode, so that the geogrid 12 is attached to the step 11 more tightly and more smoothly, and wrinkles or bending are not prone to occurring.
Referring to fig. 2 and 3, the reinforcing net frame 13 includes a reinforcing mesh 131 and anchor rods 132, the reinforcing mesh 131 is obliquely arranged on the slope of the old roadbed 1, the reinforcing mesh 131 is formed by welding reinforcing bars vertically staggered with each other in the transverse direction and the longitudinal direction, and the reinforcing bars in the reinforcing mesh 131 are also welded to both ends of the diagonal member 111. One end of each anchor rod 132 is vertically connected with the reinforcing mesh 131 by welding, and the other end of each anchor rod 132 is obliquely and inwardly inserted into the old roadbed 1 perpendicular to the slope of the old roadbed 1.
Referring to fig. 1 and 2, the new roadbed 2 is formed by tamping filling materials containing a part of screened waste earth and stone square stock layer by layer, and the upper surface of each tamped filling layer is flush with the upper surface of the corresponding step 11. In addition, in order to make the anti-settling effect of the new roadbed 2 better, the bottom of the new roadbed 2 is a soil layer reinforced by guniting, namely, concrete mortar is added into the soil layer at the bottom of the new roadbed 2 in a rotary guniting grouting mode, so that the soil layer and the concrete are fixedly connected together, and a certain anti-settling effect is achieved.
Referring to fig. 1 and 2, the drainage pipe 3 may be a precast concrete pipe or a steel pipe, which is drilled and buried to extend from the bottom of the old roadbed 1 to the bottom of the new roadbed 2 and extends from a side slope at the bottom of the new roadbed 2, so that a part of water penetrating into the ground can be drained.
The implementation principle of the transverse new and old roadbed connecting structure in the embodiment of the application is as follows:
after the construction of the transverse new and old roadbed connecting structure is completed, the geogrid 12 can form a bonding effect with a soil body, the tensile resistance of the structure is improved, the settlement effect of the whole roadbed is improved, in addition, the reinforcing net rack 13 enables the new roadbed 2 and the old roadbed 1 to be connected through the consolidation effect between the reinforcing net rack 13 and filling materials, friction force and pulling force are generated, the connecting strength and the structural stability between the old roadbed 1 and the new roadbed 2 are improved, and the roadbed is not easy to be damaged. Finally, the drainage pipe 3 can also drain a part of the seeped water from the old foundation 2 and the new foundation bottom, so that the damage of the seeped water to the whole roadbed structure is reduced, and the roadbed is more durable.
The application also provides a construction method of a transverse new and old roadbed connecting structure, which is used for manufacturing the transverse new and old roadbed connecting structure in any one of the above embodiments, and referring to fig. 4, the construction method comprises the following steps:
and S101, performing measurement lofting on the ground outside the old roadbed 1.
According to the drawing, a detection device such as a total station device is adopted on the ground outside the old roadbed 1 for measurement and lofting, pile positions and slope toe lines are respectively determined, a leveling point of a composite construction road section is required before lofting so as to determine that the precision meets the requirement, and the filling thickness and width meet the requirement.
S102, removing surface soil and digging steps 11 on the roadbed and the soil layer on the outer side step by step.
The surface soil of the transverse widened part can be cleared by adopting an excavator, the thickness of the surface layer is determined to be cleared according to the actual condition, and the cleared waste earthwork material on the surface layer is laid aside and tedded for subsequent use. Then, the step 11 is dug step by step downwards, and the bottom soil layer can be reinforced and leveled by adopting a rotary spraying grouting method.
S103, screening the dug waste earthwork material.
The dug waste earthwork material is screened by screening equipment such as a rotary screen, a vibrating screen and the like, so that the waste earthwork material is divided into backfill and waste material, and the backfill and waste material is intensively stacked on a site which does not affect the construction at the periphery of a construction site for later use.
And S104, laying the geogrid 12 at the bottom of the new roadbed 2 and laying the reinforcing net rack 13 along the slope of the old roadbed 1.
The anchor rods 132 are first welded to the reinforcing mat 131, then the stay cables 111 are inserted obliquely and the stay cables 111 are welded to the reinforcing mat 131. The geogrid 12 is then laid layer by layer, although it is also possible to lay them layer by layer at intervals of 2 meters.
And S105, backfilling the backfill material and the water-permeable road base material layer by layer and tamping to form a new road bed 2.
Backfilling backfill materials and water-permeable road base materials generated by the screened waste earthwork materials layer by layer from the bottommost layer, wherein the water content of the filling soil is smaller than the range of two percent to three percent of the optimal water content, tamping and compacting each layer of backfill soil by using tamping equipment such as a crane, a tamping hammer and the like to tamp and compact, and then leveling the side slope of the new roadbed 2.
Further, in order to increase the slope strength of the new roadbed 2, after the step S105, a layer of waste material is covered on the slope of the new roadbed 2, compacted, and wet spray-sown green plants are carried out, wherein the green plants grow and root on the slope of the new roadbed 2, so that the slope of the new roadbed 2 is reinforced, the ecology can be kept, and the effect of environmental protection is achieved.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. A horizontal new and old road bed connection structure which characterized in that: comprises an old roadbed (1) and a new roadbed (2) fixedly connected with the old roadbed (1); a plurality of steps (11) are transversely arranged on the side slope of the old roadbed (1) step by step, a geogrid (12) is paved on the steps (11), and a reinforcing net rack (13) fixedly connected with the old roadbed (1) is obliquely arranged on the side slope of the old roadbed (1); the new roadbed (2) is formed by tamping filling materials containing a part of screened waste earth and stone square stock layer by layer, and the geogrid (12) extends on each layer of the new roadbed (2) along the horizontal direction.
2. A lateral old-new roadbed connection structure according to claim 1, wherein: the steps (11) are obliquely arranged on the side slope of the old roadbed (1) at an inclination of 3 to 5 percent towards the inner side direction of the old roadbed (1).
3. A lateral old-new roadbed connection structure according to claim 1, wherein: the geogrid (12) is provided with pressing rods (121) at intervals, and the pressing rods (121) are reversely buckled on the steps (11).
4. A lateral old-new roadbed connection structure according to claim 1, wherein: the reinforcing net rack (13) comprises a reinforcing mesh (131) obliquely arranged on the side slope of the old roadbed (1) and a plurality of anchor rods (132) with one ends vertically connected with the reinforcing mesh (131);
the other end of the anchor rod (132) is inserted into the old roadbed (1) in an inclined inward mode.
5. A lateral old-new roadbed connection structure according to claim 4, wherein: and the step (11) is provided with diagonal draw bars (111) with two ends fixedly connected with the reinforcing mesh (131) in a penetrating way.
6. A lateral old-new roadbed connection structure according to claim 1, wherein: the top surface of the new roadbed (2) is an inclined surface which gradually becomes lower from the inner side to the outer side.
7. A lateral old-new roadbed connection structure according to claim 1, wherein: the drainage pipe (3) is transversely buried at the bottoms of the old roadbed (1) and the new roadbed (2);
the drain pipe (3) is gradually and downwards inclined from the inner side to the outer side.
8. A lateral old-new roadbed connection structure according to any one of claims 1 to 7, wherein: and the soil layer at the bottom of the new roadbed (2) is a soil layer reinforced by guniting.
9. A construction method of a transverse old-new roadbed connection structure, which manufactures a transverse old-new roadbed connection structure as claimed in any one of claims 1 to 8, characterized by comprising the following steps:
measuring and lofting the outer side of the old roadbed (1);
removing surface soil, and digging steps (11) on the old roadbed (1) and the soil layer on the outer side step by step;
screening the dug waste earthwork material to divide the waste earthwork material into backfill and waste material;
laying a geogrid (12) at the bottom of the new roadbed (2) and laying a reinforcing net rack (13) along the side slope of the old roadbed (1);
and backfilling the backfill material and the permeable roadbed filling layer by layer and tamping to form a new roadbed.
10. The construction method of a transverse old-new roadbed connection structure according to claim 9, wherein: and covering a layer of waste material on the side slope of the new roadbed after construction, compacting, and carrying out wet spray seeding on the side slope for green planting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011218533.9A CN112323559A (en) | 2020-11-04 | 2020-11-04 | Transverse new and old roadbed connecting structure and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011218533.9A CN112323559A (en) | 2020-11-04 | 2020-11-04 | Transverse new and old roadbed connecting structure and construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112323559A true CN112323559A (en) | 2021-02-05 |
Family
ID=74315282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011218533.9A Pending CN112323559A (en) | 2020-11-04 | 2020-11-04 | Transverse new and old roadbed connecting structure and construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112323559A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115287965A (en) * | 2022-08-17 | 2022-11-04 | 北京市市政一建设工程有限责任公司 | BIM technology-based new and old road pavement joining construction process |
| CN115726236A (en) * | 2022-12-27 | 2023-03-03 | 哈尔滨工业大学 | A Sub-area Active Dewatering Subgrade Structure and Construction Method for Reconstruction and Expansion of Highway |
| CN116065434A (en) * | 2022-11-15 | 2023-05-05 | 安徽省公路桥梁工程有限公司 | Lap joint structure of lightweight foam soil fill and roadbed |
| CN116752393A (en) * | 2023-08-17 | 2023-09-15 | 中南大学 | Novel structure for roadbed widening and construction process |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012177298A (en) * | 2012-06-19 | 2012-09-13 | Maeda Kosen Co Ltd | Reinforcement method for road banking |
| CN203129096U (en) * | 2013-03-21 | 2013-08-14 | 大连理工大学 | Anti-seepage face anti-seismic structure of a concrete rockfill dam |
| CN209493776U (en) * | 2018-11-14 | 2019-10-15 | 湖南佳林建设集团有限公司 | A new and old subgrade connection structure |
| CN211312044U (en) * | 2019-11-28 | 2020-08-21 | 重庆交通大学工程设计研究院有限公司 | Road widening roadbed splicing structure |
-
2020
- 2020-11-04 CN CN202011218533.9A patent/CN112323559A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012177298A (en) * | 2012-06-19 | 2012-09-13 | Maeda Kosen Co Ltd | Reinforcement method for road banking |
| CN203129096U (en) * | 2013-03-21 | 2013-08-14 | 大连理工大学 | Anti-seepage face anti-seismic structure of a concrete rockfill dam |
| CN209493776U (en) * | 2018-11-14 | 2019-10-15 | 湖南佳林建设集团有限公司 | A new and old subgrade connection structure |
| CN211312044U (en) * | 2019-11-28 | 2020-08-21 | 重庆交通大学工程设计研究院有限公司 | Road widening roadbed splicing structure |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115287965A (en) * | 2022-08-17 | 2022-11-04 | 北京市市政一建设工程有限责任公司 | BIM technology-based new and old road pavement joining construction process |
| CN116065434A (en) * | 2022-11-15 | 2023-05-05 | 安徽省公路桥梁工程有限公司 | Lap joint structure of lightweight foam soil fill and roadbed |
| CN115726236A (en) * | 2022-12-27 | 2023-03-03 | 哈尔滨工业大学 | A Sub-area Active Dewatering Subgrade Structure and Construction Method for Reconstruction and Expansion of Highway |
| CN116752393A (en) * | 2023-08-17 | 2023-09-15 | 中南大学 | Novel structure for roadbed widening and construction process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112323559A (en) | Transverse new and old roadbed connecting structure and construction method | |
| CN113445396B (en) | High-fill road foundation filling construction method for high liquid limit soil road section | |
| CN108708239B (en) | A geogrid steep slope embankment structure and construction method | |
| CN104264680B (en) | The method for processing foundation of Tian Wa joint portion, a kind of collapsible loess slope | |
| CN113322984A (en) | A kind of rapid repair structure for shallow landslide of soil slope above grade two and its construction method | |
| CN110258220B (en) | A method for ecologically filling road embankments with high-strength steel wire mesh reinforced materials | |
| CN210194361U (en) | Splicing structure for widening new and old roadbeds on road | |
| CN114541429A (en) | Multistage slope type loess high fill side slope protection treatment system | |
| CN106676993B (en) | Reinforced broken stone frame structure roadbed reinforcing system and reinforcing method thereof | |
| CN209039896U (en) | The soft soil roadbed three-dimensional reinforced structure of convolution is knitted in a kind of stake- | |
| CN111005403A (en) | Assembled three-dimensional reinforced earth retaining wall and construction method thereof | |
| CN206625096U (en) | A kind of reinforced rubble frame structure subgrade strengthening system | |
| CN108824412B (en) | Soft foundation treatment method based on gabion wall reinforced soil and dynamic compaction | |
| CN204676593U (en) | A super-high integral steel-plastic grid reinforced earth abutment retaining wall structure | |
| CN111379253A (en) | Construction method for high-speed railway expanded cement slurry post-grouting discrete material pile composite foundation | |
| CN111622234B (en) | Unloading type thin-wall box-type retaining wall supported by obliquely and vertically combined steel pipe pile and construction process | |
| CN212427130U (en) | Mudstone high-fill side slope structure | |
| CN212405094U (en) | High water content clay fill foundation drainage system | |
| CN114508013B (en) | Half-filled and half-dug subgrade structure and construction method of granite residual soil in rainy area | |
| CN102561368B (en) | Flexible supporting construction of pre-compaction reinforced soil piece | |
| CN109056441A (en) | The soft soil roadbed three-dimensional reinforced structure of convolution and construction method are knitted in stake- | |
| CN110424452B (en) | Backfill ceramsite prefabricated reinforced retaining wall structure and construction method | |
| CN207017097U (en) | Deep super embankment on soft soil | |
| CN111304986A (en) | Construction method for treating soft foundation settlement in plateau frozen soil area | |
| CN217810582U (en) | Box culvert subbottom construction structure |
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: 20210205 |