CN115233510B - Roadbed structure capable of preventing settlement and construction method - Google Patents
Roadbed structure capable of preventing settlement and construction method Download PDFInfo
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- CN115233510B CN115233510B CN202210877190.XA CN202210877190A CN115233510B CN 115233510 B CN115233510 B CN 115233510B CN 202210877190 A CN202210877190 A CN 202210877190A CN 115233510 B CN115233510 B CN 115233510B
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- steel
- roadbed
- concrete layer
- grouting
- roadbed structure
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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
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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
- E01C3/04—Foundations produced by soil stabilisation
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
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- 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
- E03F5/0401—Gullies for use in roads or pavements
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- 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
Abstract
The invention discloses an anti-sedimentation roadbed structure and a construction method thereof, wherein drainage ditches are arranged on two sides of the roadbed structure, and the roadbed structure comprises a soft soil area, a concrete layer and a roadbed upper layer structure from bottom to top; the lower part of the concrete layer is provided with quincuncial piles and is fixedly provided with flexible bags, each flexible bag is hermetically connected with a grouting pipe, and the grouting pipes are arranged in the concrete layer and extend from the concrete layer to one side of the drainage ditch. The subsidence-preventing roadbed structure can be used for filling the subsidence-preventing area of the weak area through grouting, so that the concrete layer and the roadbed superstructure are effectively supported.
Description
Technical Field
The invention relates to the field of roadbed construction. More particularly, the present invention relates to an anti-settling subgrade structure.
Background
Along with the vigorous development of the traffic and transportation construction of China, the highway construction enters an unprecedented high-speed development stage, the highway construction is a very important operation unit in the construction of traffic infrastructure, the roadbed structure is used as a very critical structural part in the construction of the highway of China, the roadbed is the foundation of a track or a pavement, and the roadbed is an earth construction formed by excavation or filling. The soft soil roadbed refers to a common roadbed in a special area, and special design treatment is needed; it is mostly distributed in rivers, ocean coasts, inland lakes, ponds, basins and rainy mountain depressions. As soft soil has the characteristics of large water content, poor permeability, low natural strength, high compressibility and the like, uneven settlement of roadbed is often caused.
Disclosure of Invention
The invention aims to provide a roadbed structure capable of preventing settlement and a construction method, and the roadbed structure capable of preventing settlement can be filled in a region where collapse occurs in a weak region through grouting, so that effective support of a concrete layer and a roadbed superstructure is realized.
The technical scheme adopted by the invention for solving the technical problem is as follows: the utility model provides a can prevent roadbed structure of subsidence, the both sides of roadbed structure are provided with escape canal, the roadbed structure from bottom to top includes weak soil area, concrete layer and roadbed superstructure;
the lower part of the concrete layer is provided with a quincuncial pile type fixed with a flexible bag, each flexible bag is hermetically connected with a grouting pipe, the grouting pipes are arranged in the concrete layer and extend from the concrete layer to one side of the drainage ditch, a plurality of grouting holes are formed in each flexible bag, a filter screen is arranged at each grouting hole, the flexible bag is of a strip-shaped bag structure and is supported on a soft soil area, the bottom of the flexible bag is fixedly provided with a plurality of steel legs in an array-shaped hinged manner, the movable end of one steel leg positioned in the middle of the flexible bag is connected with a pull rope, the pull rope sequentially penetrates through the grouting holes of the flexible bag and the grouting pipes, rotatable shaft rods are arranged in the drainage ditch corresponding to each row of grouting pipes, wire reels are arranged on the shaft rods, the number of the wire reels is the same as that of the corresponding rows of flexible bags, the pull ropes penetrating through each grouting pipe are wound on the corresponding wire reels, a corner sensor is arranged on the shaft rods and is connected with a PLC, and the PLC is connected with the alarm controller; the upper end of the shaft rod is provided with an end cover, the side surface of the end cover is provided with a sealing ring, and the end cover divides the corresponding drainage ditch into an upper area and a lower area.
Preferably, the device further comprises a plurality of steel sleeves, a plurality of water absorption holes are formed in the steel sleeves, the steel sleeves are vertically driven between two flexible bags in each row, the upper ends of the steel sleeves penetrate out of the top surface of the concrete layer, the depth of penetration of the lower ends of the steel sleeves into soft soil areas is not less than 50cm, the upper ends of the adjacent steel sleeves are connected through connecting steel pipes, the connecting steel pipes on the steel sleeves close to the drainage ditch on the other side extend to the drainage ditch on the other side and upwards extend to be flush with the top surface of the drainage ditch, and nano water absorption materials are respectively arranged in the connecting steel pipes and the steel sleeves.
Preferably, the concrete layer has a thickness of 5-15cm.
Preferably, the bottom surface of the flexible bag is fixed with a frame-shaped steel skeleton, and the steel legs are connected with the frame-shaped steel skeleton through hinge pieces.
Preferably, the roadbed superstructure comprises a surface layer and a base layer from top to bottom.
The invention also provides a construction method of the anti-sedimentation roadbed structure, which comprises the following steps:
s1, excavating drainage ditches on two sides of a roadbed structure, and driving steel sleeves filled with nano water absorbing materials into soft soil areas;
s2, connecting each row of flexible bags, pull ropes and grouting pipes well, placing the flexible bags on a soft soil area, horizontally placing steel legs below the flexible bags, completing installation of a shaft rod and a wire coil, fixing the pull ropes on the wire coil, and completing installation of a rotation angle sensor, a PLC (programmable logic controller) and an alarm;
s3, pouring of the concrete layer is completed, connection of the connecting steel pipes on the upper portion of the steel sleeve is completed, and then a roadbed superstructure is paved.
The invention at least comprises the following beneficial effects: can prevent subsiding roadbed structure can be filled through the slip casting to the region that subsides appears in weak region to realized effectively supporting concrete layer and roadbed superstructure, adsorb the weak soil region in the moisture through the nanometer material that absorbs water, reduce the moisture content in weak soil region, extend the connecting steel pipe to escape canal top simultaneously, make it communicate with the outside, evaporate moisture through the nanometer material fast, thereby can adsorb weak soil region's moisture repeatedly, also need not external power when the drainage, evaporate moisture fast through the nanometer material, and greatly reduced roadbed structure takes place to subside because of receiving water influence.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic view of the structure of the anti-settling roadbed structure of the present invention;
figure 2 is a schematic bottom view of a flexible pouch of the present invention.
Reference numerals illustrate: 1 flexible bag, 2 soft soil area, 3 concrete layer, 4 surface course, 5 slip casting pipe, 6 grout outlet, 7 steel leg, 8 stay cord, 9 axostylus axostyle, 10 drum, 11 end cover, 12 steel sleeve pipe, 13 connecting steel pipe, 14 escape canal, 15 frame shaped steel skeletons, 16 basic unit.
Detailed Description
The present invention will now be described more fully hereinafter with reference to the accompanying drawings. Those of ordinary skill in the art will be able to implement the invention based on these descriptions. Before describing the present invention with reference to the accompanying drawings, it should be noted in particular that: the technical solutions and technical features provided in the sections including the following description in the present invention may be combined with each other without conflict.
In addition, the embodiments of the present invention referred to in the following description are typically only some, but not all, embodiments of the present invention. Therefore, all other embodiments, which can be made by one of ordinary skill in the art without undue burden, are intended to be within the scope of the present invention, based on the embodiments of the present invention.
The invention is further described in detail below with reference to the drawings and the implementation, and the implementation process is as follows:
as shown in fig. 1-2, the invention provides an anti-sedimentation roadbed structure, wherein drainage ditches 14 are arranged on two sides of the roadbed structure, and the roadbed structure comprises a soft soil area 2, a concrete layer 3 and a roadbed superstructure from bottom to top;
the lower part of the concrete layer 3 is provided with a quincuncial pile type fixed with flexible bags 1, taking fig. 1 as an example, a first row is provided with three groups of flexible bags 1 fixed in a hinged manner, a second row is provided with two groups of flexible bags 1 fixed in a staggered manner, each flexible bag 1 is connected with a grouting pipe 5 in a sealing manner, the grouting pipes 5 are arranged in the concrete layer 3 and extend from the concrete layer 3 to one side of the drainage ditch 14, the flexible bags 1 are provided with a plurality of grouting holes 6, the grouting holes 6 are provided with filter screens, the flexible bags 1 are of strip-shaped bag structures and are supported on a soft soil area 2, the bottom surface of each flexible bag 1 is provided with a plurality of steel legs 7 in an array manner, the movable end of one steel leg 7 positioned in the middle of the flexible bags 1 is connected with a pull rope 8, the pull rope 8 sequentially penetrates through the grouting holes 6 and the grouting pipes 5 of the flexible bags 1, two ends of each shaft 9 are connected with a bearing to realize rotation, the number of the shaft 9 is provided with a plurality of wire reels 10, the number of the flexible bags 10 are correspondingly arranged on the drainage ditch 14, the number of the shaft reels is correspondingly equal to the number of the shaft rods 10, and the number of the wire reels are correspondingly arranged on the shaft rods 9 are correspondingly in the PLC, and the number of the wire reels are correspondingly connected with the wire reels 9, and the wire reels are correspondingly connected with the wire reels and the PLC are in turn-shaped controllers, and the wire reels are connected with the PLC and the wire-winding controllers are in turn, and the wire-like device is connected with the wire-state and the wire-electrode-state machine and has a large-state, and has a high alarm device and the each has a wire and has a high alarm; the upper part of the shaft lever 9 is provided with an end cover 11, the side surface of the end cover 11 is provided with a sealing ring, the end cover 11 divides the corresponding drainage ditch 14 into an upper area and a lower area, the upper area is used for draining rainwater, and the lower area is kept dry.
In the roadbed structure, often most weight all bear in the centre of roadbed structure, under the repeated milling, can present the subsidence form that middle low both sides were made, to weak soil region 2, if drainage facility is imperfect, the high water content also can cause roadbed structure to take place inhomogeneous subsidence in soil, when weak soil region 2 subsides, the hole appears in flexible bag 1 below, steel leg 7 rotates downwards through the pin joint under the action of gravity, through stay cord 8 pulling drum 10 rotation, rotate to surpass the warning of settlement angle alarm, warn the maintainer and carry out the slip casting, need rotate the pivot to initial position before the slip casting. When grouting the collapse area, the section of drainage ditch 14 needs to be separated into relatively independent spaces, so that rainwater cannot pass through, the end cover 11 is opened, grouting is performed on the lower area through the grouting pipe 5 corresponding to the stay rope 8 with the stay rope 8 in a tightening state (the rest stay ropes 8 are in a stacking state), namely, in a tightening state, so that grouting is performed on the collapse area in the soft soil area 2, the collapse area is filled after grouting, and therefore effective support on the concrete layer 3 and the roadbed superstructure is achieved.
The technical scheme can also comprise the following technical details so as to better realize the technical effects: the soil-resistant foundation pile comprises a soft soil region 2, a plurality of steel sleeves 12, a plurality of water absorption holes are formed in the steel sleeves 12, the steel sleeves 12 are vertically driven into the space between two flexible bags 1 of each row, the upper ends of the steel sleeves 12 penetrate out of the top surface of the concrete layer 3, the depth of penetration of the lower ends of the steel sleeves 12 into the soft soil region 2 is not less than 50cm, the upper ends of adjacent steel sleeves 12 are connected through connecting steel pipes 13, the connecting steel pipes 13 on the steel sleeves 12 close to the drainage ditch 14 on the other side extend to the drainage ditch 14 on the other side and upwards extend to be flush with the top surface of the drainage ditch 14, nano water absorption materials are respectively arranged in the connecting steel pipes 13 and the steel sleeves 12, moisture in the soft soil region 2 is absorbed through the nano water absorption materials, the water content of the soft soil region 2 is reduced, meanwhile, the connecting steel pipes 13 extend to the upper side of the drainage ditch 14 and are communicated with the outside, the moisture is quickly evaporated through the nano materials, thus the moisture in the soft soil region 2 can be repeatedly absorbed, external power is not needed in the drainage, the roadbed, the moisture is quickly evaporated through the nano materials, the nano water, the sinking of the structure is greatly reduced due to the influence of water.
The technical scheme can also comprise the following technical details so as to better realize the technical effects: the thickness of the concrete layer 3 is 5-15cm.
The technical scheme can also comprise the following technical details so as to better realize the technical effects: as shown in fig. 2, a frame-shaped steel skeleton 15 is fixed on the bottom surface of the flexible bag 1, and the steel legs 7 are connected with the frame-shaped steel skeleton 15 through hinges.
The technical scheme can also comprise the following technical details so as to better realize the technical effects: the roadbed superstructure comprises a surface layer 4 and a base layer 16 from top to bottom.
The invention also provides a construction method of the anti-sedimentation roadbed structure, which comprises the following steps:
s1, excavating drainage ditches 14 on two sides of a roadbed structure, and driving steel sleeves 12 filled with nano water absorbing materials into a soft soil area 2;
s2, connecting each row of flexible bags 1, pull ropes 8 and grouting pipes 5, placing the flexible bags on a soft soil area 2, horizontally placing steel legs 7 below the flexible bags 1, finishing the installation of shaft rods 9 and wire coils 10, fixing the pull ropes 8 on the wire coils 10, and finishing the installation of a rotation angle sensor, a PLC controller and an alarm;
s3, pouring of the concrete layer 3 is completed, connecting steel pipes 13 on the upper portion of the steel sleeve 12 are connected, and then a roadbed superstructure is paved.
Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown, it is well suited to various fields of use for which the invention is suited, and further modifications may be readily made by one skilled in the art, and the invention is therefore not to be limited to the particular details and examples shown and described herein, without departing from the general concepts defined by the claims and the equivalents thereof.
Claims (6)
1. The anti-sedimentation roadbed structure is characterized in that drainage ditches are arranged on two sides of the roadbed structure, and the roadbed structure comprises a soft soil area, a concrete layer and a roadbed upper layer structure from bottom to top;
the lower part of the concrete layer is provided with a quincuncial pile type fixed with a flexible bag, each flexible bag is hermetically connected with a grouting pipe, the grouting pipes are arranged in the concrete layer and extend from the concrete layer to one side of the drainage ditch, a plurality of grouting holes are formed in each flexible bag, a filter screen is arranged at each grouting hole, the flexible bag is of a strip-shaped bag structure and is supported on a soft soil area, the bottom of the flexible bag is fixedly provided with a plurality of steel legs in an array-shaped hinged manner, the movable end of one steel leg positioned in the middle of the flexible bag is connected with a pull rope, the pull rope sequentially penetrates through the grouting holes of the flexible bag and the grouting pipes, rotatable shaft rods are arranged in the drainage ditch corresponding to each row of grouting pipes, wire reels are arranged on the shaft rods, the number of the wire reels is the same as that of the corresponding rows of flexible bags, the pull ropes penetrating through each grouting pipe are wound on the corresponding wire reels, a corner sensor is arranged on the shaft rods and is connected with a PLC, and the PLC is connected with the alarm controller; an end cover is arranged above the shaft rod, a sealing ring is arranged on the side face of the end cover, and the end cover divides the corresponding drainage ditch into an upper area and a lower area.
2. The settlement-preventing roadbed structure according to claim 1, further comprising a plurality of steel sleeves, wherein a plurality of water absorption holes are formed in the steel sleeves, the steel sleeves are vertically driven between the two flexible bags in each row, the upper ends of the steel sleeves penetrate out of the top surface of the concrete layer, the lower ends of the steel sleeves penetrate into the soft soil area to a depth of not less than 50cm, the upper ends of the adjacent steel sleeves are connected through connecting steel pipes, the connecting steel pipes on the steel sleeves close to the drainage ditch on the other side extend to the drainage ditch on the other side and extend upwards to be flush with the top surface of the drainage ditch, and the connecting steel pipes and the steel sleeves are filled with nano water absorption materials.
3. The settlement-resistant roadbed structure according to claim 1, wherein the concrete layer has a thickness of 5 to 15cm.
4. The settlement-preventing roadbed structure according to claim 1, wherein the bottom surface of the flexible bag is fixed with a frame-shaped steel skeleton, and the steel legs are connected with the frame-shaped steel skeleton through hinge members.
5. The settlement-resistant roadbed structure according to claim 1, wherein the roadbed superstructure comprises a surface layer and a base layer from top to bottom.
6. A construction method of the settlement-preventing roadbed structure according to any one of claims 2 to 5, comprising the steps of:
s1, excavating drainage ditches on two sides of a roadbed structure, and driving steel sleeves filled with nano water absorbing materials into soft soil areas;
s2, connecting each row of flexible bags, pull ropes and grouting pipes well, placing the flexible bags on a soft soil area, horizontally placing steel legs below the flexible bags, completing installation of a shaft rod and a wire coil, fixing the pull ropes on the wire coil, and completing installation of a rotation angle sensor, a PLC (programmable logic controller) and an alarm;
s3, pouring of the concrete layer is completed, connection of the connecting steel pipes on the upper portion of the steel sleeve is completed, and then a roadbed superstructure is paved.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210877190.XA CN115233510B (en) | 2022-07-25 | 2022-07-25 | Roadbed structure capable of preventing settlement and construction method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210877190.XA CN115233510B (en) | 2022-07-25 | 2022-07-25 | Roadbed structure capable of preventing settlement and construction method |
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| Publication Number | Publication Date |
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| CN115233510A CN115233510A (en) | 2022-10-25 |
| CN115233510B true CN115233510B (en) | 2023-05-16 |
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| CN117344750B (en) * | 2023-12-04 | 2024-03-29 | 中化学交通建设集团有限公司 | Bridge foundation reinforcing structure and construction method thereof |
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| JP2013167144A (en) * | 2012-01-16 | 2013-08-29 | Grape Co Ltd | Foundation structure and construction method for foundation |
| CN203284708U (en) * | 2013-06-07 | 2013-11-13 | 中铁第四勘察设计院集团有限公司 | Subgrade structure of deep-layer loose and soft soil region |
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| CN207376616U (en) * | 2017-10-25 | 2018-05-18 | 宁波大学 | A kind of draining bamboo joint pile and its composite foundation system |
| CN208152008U (en) * | 2018-04-23 | 2018-11-27 | 盐城工业职业技术学院 | Soft soil foundation stabilization by drainage pipe and reinforcement of foundation |
| CN108999046A (en) * | 2018-09-14 | 2018-12-14 | 中铁十四局集团有限公司 | A kind of backfilled roadbed supported cavity beneath slab monitoring and board bottom separation in reducing subsidence by grouting system and method |
| CN111441208A (en) * | 2020-04-16 | 2020-07-24 | 张健 | Anti-settlement highway subgrade |
-
2022
- 2022-07-25 CN CN202210877190.XA patent/CN115233510B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013167144A (en) * | 2012-01-16 | 2013-08-29 | Grape Co Ltd | Foundation structure and construction method for foundation |
| CN203284708U (en) * | 2013-06-07 | 2013-11-13 | 中铁第四勘察设计院集团有限公司 | Subgrade structure of deep-layer loose and soft soil region |
| CN107462211A (en) * | 2017-09-13 | 2017-12-12 | 大连理工大学 | A kind of road foundation settlement monitoring sensor for being suitable for having half/rigid structural layer |
| CN207376616U (en) * | 2017-10-25 | 2018-05-18 | 宁波大学 | A kind of draining bamboo joint pile and its composite foundation system |
| CN208152008U (en) * | 2018-04-23 | 2018-11-27 | 盐城工业职业技术学院 | Soft soil foundation stabilization by drainage pipe and reinforcement of foundation |
| CN108999046A (en) * | 2018-09-14 | 2018-12-14 | 中铁十四局集团有限公司 | A kind of backfilled roadbed supported cavity beneath slab monitoring and board bottom separation in reducing subsidence by grouting system and method |
| CN111441208A (en) * | 2020-04-16 | 2020-07-24 | 张健 | Anti-settlement highway subgrade |
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