CN115323851B - Construction method of anti-sedimentation roadbed - Google Patents
Construction method of anti-sedimentation roadbed Download PDFInfo
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- CN115323851B CN115323851B CN202210222331.4A CN202210222331A CN115323851B CN 115323851 B CN115323851 B CN 115323851B CN 202210222331 A CN202210222331 A CN 202210222331A CN 115323851 B CN115323851 B CN 115323851B
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- 238000010276 construction Methods 0.000 title claims abstract description 20
- 238000004062 sedimentation Methods 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 81
- 239000002689 soil Substances 0.000 claims abstract description 27
- 239000004576 sand Substances 0.000 claims description 19
- 239000000945 filler Substances 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 7
- 230000002745 absorbent Effects 0.000 claims description 3
- 239000002250 absorbent Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 3
- 239000004575 stone Substances 0.000 claims description 3
- 239000003673 groundwater Substances 0.000 abstract description 17
- 230000006378 damage Effects 0.000 abstract description 8
- 238000010521 absorption reaction Methods 0.000 abstract description 6
- 230000008595 infiltration Effects 0.000 abstract description 6
- 238000001764 infiltration Methods 0.000 abstract description 6
- 230000009545 invasion Effects 0.000 abstract description 5
- 230000003628 erosive effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- -1 gravel Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- 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
- E01C3/003—Foundations for pavings characterised by material or composition used, e.g. waste or recycled material
-
- 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
Abstract
The application discloses a construction method of an anti-sedimentation roadbed, which comprises the steps of sequentially paving a soft soil layer, a first waterproof layer, an inner layer structure, an arc-shaped supporting layer, a gravel layer and a pavement layer from bottom to top, wherein a support column, a first side beam, a second side beam and a crotch structure are wrapped and buried in the inner layer structure, water absorbing walls and water retaining walls are paved on two sides of the inner layer structure, and the interiors of the crotch structure, the first side beam, the second side beam and the support column are all hollow structures and are communicated in sequence. The application solves the technical problems that the roadbed in the prior art cannot avoid the infiltration of rainwater layer by layer from top to bottom, each layer of structure can be drained after being soaked by the infiltration of the rainwater, and the roadbed is subjected to certain erosion damage to cause the roadbed to be settled, realizes the advanced absorption of the rainwater at the front end of the infiltration, and the groundwater is blocked and collected in advance at the front end of the invasion roadbed, thereby avoiding the infiltration of the rainwater layer by layer and the invasion of the groundwater, reducing the damage of the inner structure of the roadbed and effectively reducing the settlement of the roadbed.
Description
Technical Field
The application relates to the technical field of roadbed settlement prevention, in particular to a construction method of a settlement-preventing roadbed.
Background
The roadbed is a foundation of a track or a road surface and is a geotechnical structure formed by excavation or filling. The roadbed has the main functions of providing necessary conditions for track or road surface paving and train or driving operation, bearing static load and dynamic load of track and rolling stock or road surface and traffic load, and simultaneously transmitting and diffusing the load to the deep part of the foundation. On the vertical section, the roadbed must ensure the elevation required by the line; on a plane, the roadbed, the bridge and the tunnel are connected to form a complete through line. In civil engineering, roadbed plays an important role in terms of construction quantity, occupied area and investment. The roadbed is a geotechnical structure, is often affected and destroyed by natural condition changes such as geology, water, rainfall, climate, earthquake and the like, and has poor resistance, so the roadbed should have enough firmness, stability and durability. For a high-speed railway, the roadbed also has reasonable rigidity so as to ensure the stability and the comfort of the train in high-speed running.
In the long-term use process of the roadbed, the roadbed is severely corroded by rainfall and groundwater, in order to avoid the corrosion of the rainwater and the groundwater in the construction method of the roadbed in the prior art, how to drain is designed in the construction, however, most of the roadbed in the prior art is water-infiltrated downwards layer by layer during drainage, and then collected for drainage, which can achieve a certain drainage effect, however, because the rainfall is infiltrated downwards layer by layer from top to bottom of the top surface of the roadbed during drainage in the prior art, each layer of structure of the roadbed can be soaked by infiltration of the rainwater, even if the roadbed is finally collected and drained, certain corrosion damage to the roadbed still exists, and after long-term use, the inner structure of the roadbed still can collapse, so that the roadbed is settled.
Disclosure of Invention
The application provides a construction method of an anti-sedimentation roadbed, which solves the technical problems that in the prior art, when the roadbed is drained, rainwater can not be prevented from leaking downwards layer by layer, each layer of structure of the roadbed can be drained after being soaked by the rainwater, and sedimentation occurs to the roadbed due to certain erosion damage to the roadbed, and the application realizes the purposes that the rainwater is absorbed in advance at the front end of the seepage, the groundwater is blocked and collected in advance at the front end of the invasion roadbed, the rainwater is prevented from leaking downwards layer by layer and the invasion of the groundwater is avoided, the damage to the internal structure of the roadbed is reduced, and the sedimentation of the roadbed is effectively reduced.
The application provides a construction method of an anti-sedimentation roadbed, which comprises the following steps: compacting the flattened soft soil to form a soft soil layer; paving a first waterproof layer on the soft soil layer; vertically downwards driving a support column in the center of the first waterproof layer, wherein the support column penetrates through the first waterproof layer and is inserted into the soft soil layer; the outer sides of the support columns are sequentially and fixedly connected with a plurality of first side beams and a plurality of second side beams from top to bottom, the first side beams are obliquely upwards arranged, and the second side beams are obliquely downwards arranged; a main channel is arranged in the support column, a first channel and a second channel are respectively arranged in the first side beam and the second side beam, and the first channel and the second channel are communicated with the main channel; a crotch structure is arranged on the top surface of the first side beam, the inside of each branch of the crotch structure is of a hollow structure, the tail end of each branch of the crotch structure is an open end, and the bottom end of the crotch structure is communicated with the first channel; paving an inner layer structure on the top surface of the first waterproof layer, wherein the inner layer structure wraps and fills the support columns, the first side beams, the second side beams and the crotch structure; the inner layer structure comprises a concrete layer, a filler layer and a sand layer which are sequentially paved from bottom to top, a water retaining wall and a water absorbing wall are respectively paved on two sides of the inner layer structure, and the water outlet end of the second channel penetrates through the water retaining wall; setting the top surface of the sand soil layer as an arc surface, paving an arc supporting layer on the top surface of the sand soil layer, wherein the bottom surface of the arc supporting layer is fixedly connected to the top end of the supporting column, the crotch structures are distributed on the bottom surface of the arc supporting layer, and the tail end of each branch of each crotch structure is contacted with the bottom surface of the arc supporting layer; paving a second waterproof layer on the top surface of the arc-shaped supporting layer; water passing holes are formed in the two ends of the arc-shaped supporting layer and the second waterproof layer in a penetrating mode, and the water passing holes are communicated with the top surface of the water absorbing wall; and paving the gravel layer and the pavement layer on the top surface of the second waterproof layer from bottom to top in sequence.
In one possible implementation manner, the crotch structure comprises a main crotch, branches and branch tips, wherein the bottom end of the main crotch is fixedly connected to the first side beam, the branches are fixedly connected to the side surfaces of the main crotch, the branch tips are fixedly connected to the side surfaces of the branches, the tail ends of each branch tip are all open ends, channels are respectively arranged in the main crotch, the branches and the inside of each branch tip, the branch tips are communicated with the inside of each branch, the branches are communicated with the inside of the main crotch, the inside of the main crotch is communicated with the first channel, and the branch tips are distributed on the bottom surface of the arc-shaped supporting layer.
In one possible implementation, the material of the split tip and the bifurcation is a super absorbent material.
In a possible implementation manner, the construction method of the anti-sedimentation roadbed provided by the application further comprises prefabricated reservoir tanks, wherein the reservoir tanks are arranged at two ends of the soft soil layer, a liquid level meter and a submerged pump are arranged in the reservoir tanks, the liquid level meter is electrically connected with the submerged pump, the output end of the submerged pump is communicated with a pipeline, and the pipeline penetrates through the reservoir tanks and extends out of the pavement; the water inlet is formed in the side face of the top end of the reservoir, and the water inlet is communicated with the bottom end of the water absorbing wall.
In one possible implementation, the filler layer includes megagranular soil, stony soil, gravel, and slag.
In one possible implementation, the top surface of the arc-shaped supporting layer is an arc-shaped surface structure.
In one possible implementation manner, the two ends of the first waterproof layer are provided with inclined planes, and the bottom end of the water absorbing wall is laid on the inclined planes.
One or more technical schemes provided by the application have at least the following technical effects or advantages:
according to the application, the support column, the first side beam and the second side beam are driven into the soft soil layer, the first waterproof layer, the concrete layer, the filler layer and the sand soil layer, so that the internal layer structure of the roadbed is supported and reinforced, then the arc-shaped support layer, the second waterproof layer, the gravel layer and the roadbed are arranged above the support column, the second waterproof layer, the gravel layer and the roadbed can be forcefully supported through the arch-shaped structure of the arc-shaped support layer, and the stability of the internal layer structure of the roadbed is ensured through two times of support;
the second waterproof layer and the water absorbing wall are further arranged, and water holes are formed and communicated with the water absorbing wall, so that rainwater is firstly guided to the water absorbing wall when the rainwater falls and infiltrates into the second waterproof layer, and the rainwater is prevented from continuously infiltrating into other layer structures; by arranging the water absorption wall and the water retaining wall and arranging the water absorption wall and the water retaining wall at the two ends of the roadbed layer structure, when groundwater invades the roadbed, the groundwater can be absorbed in advance by the water absorption wall and blocked by the water retaining wall, so that the groundwater is prevented from entering the inner layer structure of the roadbed;
a main channel is further arranged in the support column, a first channel and a second channel are respectively arranged in the first side beam and the second side beam, and the first channel and the second channel are communicated with the main channel; a crotch structure is arranged on the top surface of the first side beam, the inside of each branch of the crotch structure is a hollow structure, the tail end of each branch of the crotch structure is an open end, the bottom end of the crotch structure is communicated with the first channel, and the water outlet end of the second channel penetrates through the water retaining wall; when the second waterproof layer of roadbed when long-term use became invalid, the rainwater through the second waterproof layer is direct with crotch structure contact to by crotch structure absorption, finally, through first passageway, main passageway and second passageway water conservancy diversion to the wall of absorbing water is collected, avoid the rainwater to ooze other layer structures below the second waterproof layer under, effectively solved the roadbed among the prior art when carrying out the drainage, can't avoid the rainwater from top to bottom ooze down, each layer structure of roadbed can all be suffered the infiltration of rainwater and soak down and just can be discharged, still there is certain erosion damage to the roadbed to lead to the technical problem that subsides appear in the roadbed, realized that the rainwater is absorbed in advance at the front end of oozing down, groundwater is blockked in advance and is collected at the front end of invading the roadbed, avoid the rainwater to ooze down and the invasion of groundwater in layers, reduce the harm of roadbed inner layer structure, effectively reduce the technical effect that the roadbed subsided appears.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the embodiments of the present application or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a cross-sectional structure of an anti-settling roadbed along a road width direction according to an embodiment of the present application;
FIG. 2 is a schematic structural view of a support column, a first side beam, a second side beam, an arc-shaped support layer, a water retaining wall, a water absorbing wall, a first waterproof layer and a crotch structure according to an embodiment of the present application;
fig. 3 is a partial enlarged view of the area a in fig. 2.
Reference numerals: 1-a soft soil layer; 2-a first waterproof layer; 21-inclined plane; 3-supporting columns; 31-a first side beam; 32-a second side beam; 33-main channel; 34-a first channel; 35-a second channel; 36-an arc-shaped supporting layer; a 4-crotch structure; 41-main fork; 42-branching; 43-tip splitting; 431-sub-dividing the tips; 5-inner layer structure; 51-concrete layer; 52-a filler layer; 53-sand layer; 6-a water retaining wall; 7-a water absorption wall; 8-a second waterproof layer; 81-water passing holes; 82-a crushed stone layer; 83-road layer; 9-a reservoir; 91-a level gauge; 92-submersible pump; 93-pipeline; 94-water inlet.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
In the description of the embodiments of the present application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the embodiments of the present application and simplify description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. The terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, the terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to specific circumstances.
Referring to fig. 1, a construction method of an anti-settlement roadbed provided by an embodiment of the present application includes: compacting the flattened soft soil to form a soft soil layer 1; paving a first waterproof layer 2 on the soft soil layer 1; vertically downwards driving a support column 3 in the center of the first waterproof layer 2, and inserting the support column 3 into the soft soil layer 1 through the first waterproof layer 2; a plurality of first side beams 31 and a plurality of second side beams 32 are fixedly connected to the outer side of the support column 3 from top to bottom in sequence, wherein the first side beams 31 are obliquely upwards arranged, and the second side beams 32 are obliquely downwards arranged; a main channel 33 is arranged in the support column 3, a first channel 34 and a second channel 35 are respectively arranged in the first side beam 31 and the second side beam 32, and the first channel 34 and the second channel 35 are communicated with the main channel 33; a crotch structure 4 is arranged on the top surface of the first side beam 31, the inside of each branch of the crotch structure 4 is of a hollow structure, the tail end of each branch of the crotch structure 4 is an open end, and the bottom end of the crotch structure 4 is communicated with the first channel 34; paving an inner layer structure 5 on the top surface of the first waterproof layer 2, wherein the inner layer structure 5 wraps and fills the support column 3, the first side beam 31, the second side beam 32 and the crotch structure 4; the inner layer structure 5 comprises a concrete layer 51, a filler layer 52 and a sand layer 53 which are sequentially paved from bottom to top, a water retaining wall 6 and a water absorbing wall 7 are respectively paved at two sides of the inner layer structure 5, and the water outlet end of the second channel 35 penetrates through the water retaining wall 6; setting the top surface of the sand layer 53 as an arc surface, paving an arc supporting layer 36 on the top surface of the sand layer 53, wherein the bottom surface of the arc supporting layer 36 is fixedly connected to the top end of the supporting column 3, the crotch structures 4 are distributed on the bottom surface of the arc supporting layer 36, and the tail end of each branch of each crotch structure 4 is contacted with the bottom surface of the arc supporting layer 36; laying a second waterproof layer 8 on the top surface of the arc-shaped supporting layer 36; water passing holes 81 are formed in the arc-shaped supporting layer 36 and the two ends of the second waterproof layer 8 in a penetrating mode, and the water passing holes 81 are communicated with the top surface of the water absorbing wall 7; a crushed stone layer 82 and a pavement layer 83 are sequentially laid on the top surface of the second waterproof layer 8 from bottom to top. After roadbed laying is completed, a soft soil layer 1, a first waterproof layer 2, a concrete layer 51, a filler layer 52, a sand layer 53, an arc-shaped supporting layer 36, a second waterproof layer 8, a gravel layer 82 and a pavement layer 83 are sequentially arranged from bottom to top, wherein a supporting column 3 penetrates through the concrete layer 51, the filler layer 52 and the sand layer 53 and is inserted into the soft soil layer 1, the first side beam 31 and the second side beam 32 are embedded by the concrete layer 51, the filler layer 52 and the sand layer 53, the concrete layer 51, the filler layer 52 and the sand layer 53 are effectively supported and reinforced by the supporting column 3, the first side beam 31 and the second side beam 32, the first waterproof layer 2 and the second waterproof layer 8 are respectively in a structure formed by sandwiching water-absorbing fiber cloth between two layers, the first side beam 31 and the second side beam 32 can be effectively waterproof and water-guiding, the supporting column 3, the first side beam 31 and the second side beam 32 are annularly arranged at the outer sides of the supporting column 3, the first side beam 31 and the second side beam 32 are integrally molded, a main channel 33, a second channel 34 and a second channel 35 are formed by reserved in an inner cavity, and a good water-absorbing wall material of the first channel 34 and the second channel 35 is well-reserved; when groundwater invades the roadbed, the groundwater can be absorbed in advance by the water absorbing wall 7 and blocked by the water blocking wall 6, so that the groundwater is prevented from entering the internal structure of the roadbed; when the rain drops on the pavement infiltrate into the second waterproof layer 8, the rain drops are guided to enter the water absorbing wall 7 through the water holes 81, so that the rain is prevented from continuing to infiltrate into other layer structures; when the second waterproof layer 8 loses efficacy when the roadbed is used for a long time, rainwater which seeps downwards through the second waterproof layer 8 is directly contacted with the crotch structure 4 and is absorbed by the crotch structure 4, and finally, the rainwater is guided to the water absorbing wall 7 through the first channel 34, the main channel 33 and the second channel 35 to be collected, so that the rainwater is prevented from seeping into other layer structures below the second waterproof layer 8, and damage to the roadbed inner layer structure 5 is avoided.
Referring to fig. 2 to 3, the crotch structure 4 includes a main crotch 41, a crotch 42 and a crotch 43, the bottom end of the main crotch 41 is fixedly connected to the first side beam 31, the crotch 42 is fixedly connected to the side surface of the main crotch 41, the crotch 43 is fixedly connected to the side surface of the crotch 42, the distal end of each of the crotch 43 is an open end, the interiors of the main crotch 41, the crotch 42 and the crotch 43 are provided with passages, the crotch 43 communicates with the interior of the crotch 42, the crotch 42 communicates with the interior of the main crotch 41, the interior of the main crotch 41 communicates with the first passage 34, and the crotch 43 extends over the bottom surface of the arc-shaped supporting layer 36. The material of the split tip 43 and the fork 42 is a super absorbent material. The purpose of the crotch structure 4 in the embodiment of the application is to prevent rainwater from penetrating into the layer structure below the second waterproof layer 8 when the second waterproof layer 8 fails, namely, when the second waterproof layer fails, rainwater penetrating downwards through the second waterproof layer 8 is directly contacted with a plurality of branches 42 distributed on the bottom surface of the arc-shaped supporting plate and is quickly absorbed, and is further led into the branches 42 through the branch tips 43, and is further led into the main branches 41 through the branches 42, and then the rainwater is led into the first channel 34 and then enters the main channel 33, and finally enters the water absorbing wall 7 through the second channel 35 to be collected, so that the rainwater is prevented from penetrating downwards layer by layer; in the embodiment of the application, the two ends of the first side beam 31 are respectively and fixedly connected to the bottoms of the support columns 3 and the arc-shaped support layers 36, so that the arc-shaped support layers 36 and the support columns 3 form a stable integral structure after the laying is completed, and the layer structures above the arc-shaped support layers 36 and the inner layer structure 5 of the roadbed are effectively supported; further, two ends of the second side beam 32 are respectively and fixedly connected to the side surfaces of the support column 3 and the water retaining wall 6, the water retaining wall 6 can be strongly supported while the inner layer structure 5 is supported, meanwhile, the interiors of the first side beam 31, the second side beam 32 and the support column 3 are used as water guide channels, and the rainwater which seeps downwards is collected in advance and guided to the water absorbing wall 7, so that the rainwater is prevented from seeping downwards layer by layer; in addition, the top end of the main fork 41 is fixedly connected to the bottom surface of the arc-shaped supporting layer 36, so that the stability of the whole support column 3 and the arc-shaped supporting layer 36 is further ensured; in the embodiment of the application, the sub-split pins 431 can be continuously arranged on the split pins 43 in the fork 42 structure, so that the bottom surfaces of the arc-shaped supporting layers 36 can be fully spread over and contacted with the sub-split pins 431 through the split pins 43, and the sub-split pins 431 can quickly absorb the rainwater penetrating through the second waterproof layer 8.
Referring to fig. 1, the construction method of the anti-settling roadbed provided by the embodiment of the application further comprises prefabricated reservoir 9, wherein the reservoir 9 is arranged at two ends of the soft soil layer 1, a liquid level meter 91 and a submerged pump 92 are arranged in the reservoir 9, the liquid level meter 91 is electrically connected with the submerged pump 92, the output end of the submerged pump 92 is communicated with a pipeline 93, and the pipeline 93 penetrates through the reservoir 9 and extends out of the upper part of the road surface; a water inlet 94 is formed in the side face of the top end of the reservoir 9, and the water inlet 94 is communicated with the bottom end of the water absorbing wall 7. According to the embodiment of the application, the reservoir 9 is further arranged, so that the water absorbed in the water absorbing wall 7 is finally collected in the reservoir 9, the liquid level meter 91 is arranged, the ground is provided with the controller for detecting the liquid level in the reservoir 9, when the liquid level is higher, the liquid level meter 91 sends a signal to the controller, the controller controls the submersible pump 92 to operate, the water in the reservoir 9 is pumped to the ground, the outlet ends of the pipelines 93 can be arranged on green belts at two sides of a road, and the water pumped to the ground can be conveniently irrigated to the green belts, so that water resources are reasonably utilized.
Referring to fig. 1, the filler layer 52 includes macroclay, stony clay, gravel and slag in mass ratios of (50-55), respectively: (40-55): (15-20): (35-45).
Referring to fig. 1-2, the top surface of the arcuate support layer 36 is an arced surface structure. The purpose of the arc-shaped supporting layer 36 with the top surface of the arc-shaped surface structure in the embodiment of the application is that the arc-shaped supporting plate can be used for strongly supporting the middle position of the road due to the heavy load in the middle position of the road, so that the normal use of the road surface is ensured.
Referring to fig. 1-2, inclined planes 21 are formed at both ends of the first waterproof layer 2, and the bottom ends of the water absorbing walls 7 are laid on the inclined planes 21. In the embodiment of the application, the inclined planes 21 are arranged at the two ends of the first waterproof layer 2, so that water in the water absorbing wall 7 can be conveniently and better guided into the reservoir 9 through the inclined planes 21.
The construction method of the anti-sedimentation roadbed provided by the embodiment of the application has the following technical principle:
firstly, paving a soft soil layer 1 and a first waterproof layer 2, then, driving support columns 3, setting a first side beam 31 and a second side beam 32, sequentially paving a concrete layer 51, a filler layer 52 and a sand soil layer 53 on the top surface of the first waterproof layer 2 from bottom to top, and integrally wrapping and landfill the support columns 3, the first side beam 31, the second side beam 32 and the crotch structure 4; then, respectively paving a water retaining wall 6 and a water absorbing wall 7 on two sides of the concrete layer 51, the filler layer 52 and the sand layer 53, setting the top surface of the sand layer 53 as an arc surface, paving an arc-shaped supporting layer 36 on the top surface of the sand layer 53, fixedly connecting the bottom surface of the arc-shaped supporting layer 36 to the top end of a supporting column 3, and finally paving a gravel layer 82 and a pavement layer 83 on the top surface of the second waterproof layer 8 from bottom to top in sequence to finally form the anti-sedimentation roadbed structure of the embodiment of the application; when groundwater invades the roadbed, the groundwater can be absorbed in advance by the water absorbing wall 7 and blocked by the water blocking wall 6, so that the groundwater is prevented from entering the internal structure of the roadbed; when the rain drops on the pavement infiltrate into the second waterproof layer 8, the rain drops are guided to enter the water absorbing wall 7 through the water holes 81, so that the rain is prevented from continuing to infiltrate into other layer structures; when the second waterproof layer 8 fails, rainwater seeps into a layer structure below the second waterproof layer 8, namely, when the second waterproof layer fails, rainwater seeping downwards through the second waterproof layer 8 is directly contacted with a plurality of branches 42 distributed on the bottom surface of the arc-shaped supporting plate and is quickly absorbed, and is further led into the branches 42 through the branch tips 43, and is further led into the main branches 41 through the branches 42, and then is led into the first channel 34, and is further led into the main channel 33, and finally enters the water absorbing wall 7 through the second channel 35 to be collected, so that the rainwater is prevented from seeping downwards layer by layer; support column 3, first curb girder 31 and second curb girder 32 for support and consolidate road bed inner layer structure 5, can carry out powerful support to second waterproof layer 8, gravel layer 82 and road bed 83 through the arch structure of arc supporting layer 36, guarantee the stability of road bed inner layer structure 5 through two supports.
In this specification, each embodiment is described in a progressive manner, and the same or similar parts of each embodiment are referred to each other, and each embodiment is mainly described as a difference from other embodiments.
The above embodiments are only for illustrating the technical solution of the present application, and not for limiting the present application; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the spirit of the application.
Claims (7)
1. The construction method of the anti-sedimentation roadbed is characterized by comprising the following steps:
compacting the flattened soft soil to form a soft soil layer (1);
paving a first waterproof layer (2) on the soft soil layer (1);
driving a support column (3) vertically downwards in the center of the first waterproof layer (2), wherein the support column (3) penetrates through the first waterproof layer (2) and is inserted into the soft soil layer (1);
a plurality of first side beams (31) and a plurality of second side beams (32) are sequentially and fixedly connected to the outer side of the support column (3) from top to bottom, the first side beams (31) are obliquely upwards arranged, and the second side beams (32) are obliquely downwards arranged;
a main channel (33) is arranged in the support column (3), a first channel (34) and a second channel (35) are respectively arranged in the first side beam (31) and the second side beam (32), and the first channel (34) and the second channel (35) are communicated with the main channel (33);
a crotch structure (4) is arranged on the top surface of the first side beam (31), the inside of each branch of the crotch structure (4) is a hollow structure, the tail end of each branch of the crotch structure (4) is an open end, and the bottom end of the crotch structure (4) is communicated with the first channel (34);
paving an inner layer structure (5) on the top surface of the first waterproof layer (2), wherein the inner layer structure (5) wraps and buries the support column (3), the first side beam (31), the second side beam (32) and the crotch structure (4);
the inner layer structure (5) comprises a concrete layer (51), a filler layer (52) and a sand layer (53) which are sequentially paved from bottom to top, a water retaining wall (6) and a water absorbing wall (7) are respectively paved on two sides of the inner layer structure (5), and the water outlet end of the second channel (35) penetrates through the water retaining wall (6);
setting the top surface of the sand layer (53) as an arc surface, paving an arc supporting layer (36) on the top surface of the sand layer (53), wherein the bottom surface of the arc supporting layer (36) is fixedly connected to the top end of the supporting column (3), the crotch structures (4) are distributed on the bottom surface of the arc supporting layer (36), and the tail end of each branch of each crotch structure (4) is contacted with the bottom surface of the arc supporting layer (36);
paving a second waterproof layer (8) on the top surface of the arc-shaped supporting layer (36);
water passing holes (81) are formed in the two ends of the arc-shaped supporting layer (36) and the second waterproof layer (8) in a penetrating mode, and the water passing holes (81) are communicated with the top surface of the water absorbing wall (7);
and paving the crushed stone layer (82) and the pavement layer (83) on the top surface of the second waterproof layer (8) from bottom to top in sequence.
2. The construction method of an anti-settling roadbed according to claim 1, wherein the crotch structure (4) comprises a main crotch (41), a crotch (42) and a branch tip (43), the bottom end of the main crotch (41) is fixedly connected to the first side beam (31), the crotch (42) is fixedly connected to the side surface of the main crotch (41), the branch tip (43) is fixedly connected to the side surface of the crotch (42), the tail end of each branch tip (43) is an open end, channels are arranged in the main crotch (41), the crotch (42) and the inside of the branch tip (43), the branch tip (43) is communicated with the inside of the crotch (42), the inside of the main crotch (41) is communicated with the first channel (34), and the branch tip (43) extends over the arc-shaped supporting layer (36).
3. The construction method of anti-settling roadbed according to claim 2, wherein the material of the split tip (43) and the bifurcation (42) is a super absorbent material.
4. The construction method of the anti-sedimentation roadbed according to claim 1, further comprising a prefabricated reservoir (9), wherein the reservoir (9) is arranged at two ends of the soft soil layer (1), a liquid level meter (91) and a submerged pump (92) are arranged in the reservoir (9), the liquid level meter (91) is electrically connected with the submerged pump (92), an output end of the submerged pump (92) is communicated with a pipeline (93), and the pipeline (93) penetrates through the reservoir (9) and extends out of the road surface;
a water inlet (94) is formed in the side face of the top end of the water reservoir (9), and the water inlet (94) is communicated with the bottom end of the water absorbing wall (7).
5. The method of construction of an anti-settling subgrade according to claim 1, in which said filler layer (52) comprises megagranular, stony, gravel and slag.
6. The method of construction of an anti-settling subgrade according to claim 1, characterized in that the top surface of said arcuate supporting layer (36) is an arcuately-facing structure.
7. The construction method of the anti-sedimentation roadbed according to claim 1, wherein inclined planes (21) are formed at two ends of the first waterproof layer (2), and the bottom ends of the water absorbing walls (7) are laid on the inclined planes (21).
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| CN116856214B (en) * | 2023-09-01 | 2023-12-01 | 创辉达设计股份有限公司 | Highway subgrade anti-sedimentation structure and construction method thereof |
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