CN115029974A

CN115029974A - Construction method for widening and filling solidified soil of expressway intercommunicating ramp roadbed

Info

Publication number: CN115029974A
Application number: CN202210604941.0A
Authority: CN
Inventors: 刘兴旺; 徐广岸; 张禧华; 覃海马; 覃昌隆; 梁坚希
Original assignee: Guangxi Shuangjian Engineering Consulting Co ltd
Current assignee: Guangxi Shuangjian Engineering Consulting Co ltd
Priority date: 2022-05-30
Filing date: 2022-05-30
Publication date: 2022-09-09

Abstract

The invention discloses a construction method for widening and filling solidified soil in a highway intercommunication ramp roadbed, which comprises a roadbed measuring process, a solidified soil stirring process, a soil distribution area dividing process, a soil layer leveling process, a soil layer tamping process, a maintenance process and a detection and acceptance process, and specifically comprises the following steps: in the roadbed measuring process, firstly, the central line of the line is recovered through an instrument, the construction widening and rolling width is added according to the roadbed filling height so as to place the position of a filling slope toe, then a white line is scattered by lime, meanwhile, a mark pile is nailed, and the cross section elevation of the mark pile is measured by a leveling instrument. The construction method for widening and filling the solidified soil of the expressway intercommunicating ramp roadbed can finish the leveling of soil layers from two sides to the middle part, has higher efficiency, is convenient for subsequent processing, greatly shortens the construction period, avoids the interference to the existing traffic, simplifies the construction steps, can also adjust the loose effect of the soil layers, is suitable for construction under different conditions, and has stronger practicability.

Description

Construction method for widening and filling solidified soil of expressway intercommunicating ramp roadbed

Technical Field

The invention belongs to the technical field of road construction, and particularly relates to a construction method for widening and filling solidified soil of a highway intercommunication ramp roadbed.

Background

With the rapid development of economy in China, the traffic volume of expressways increases year by year, and because the rapid increase of traffic is estimated insufficiently when expressways are constructed in the early stage, a certain part of expressways are communicated to present a situation of traffic saturation, so that the communication traffic efficiency of expressways is greatly reduced, the requirements of the service level, traffic volume increase and social development of the expressways cannot be met, and the capacity expansion and transformation are urgently needed to improve the communication traffic capacity.

Compared with the newly-built road, the widening and reconstruction of the old road, particularly the widening and reconstruction of the intercommunicating ramp has the characteristics of high construction difficulty, complex process, high quality requirement and the like. The biggest technical problem of widening the highway subgrade is to solve the uneven settlement of the new subgrade and the old subgrade, and the new subgrade and the old subgrade have different settlement deformations due to different settlement, which inevitably causes the difference settlement between the new subgrade and the old subgrade.

The prior highway widening project of widening the roadbed in China, which is completed by filling undisturbed soil or other traditional construction technologies, accumulates some experiences, so that the existing highway intercommunication ramp roadbed filling uses a solidified soil construction technology, and the uneven settlement between the old roadbed and the new roadbed can be effectively reduced.

The present solidified soil construction technology needs to level the added filling soil during construction, after leveling, the filling soil can be tamped by a vibratory roller, and the leveling operation can be carried out on the two sides of a road respectively due to the fact that the leveling instrument on the current leveler cannot level the two sides of the road simultaneously, so that the construction period is prolonged greatly, the interference to the existing traffic is caused, and the construction steps are complicated.

Disclosure of Invention

The invention aims to provide a construction method for widening and filling solidified soil in a roadbed of an expressway intercommunicating ramp road, which aims to solve the problems in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: a construction method for widening and filling solidified soil in a highway intercommunication ramp roadbed comprises a roadbed measurement process, a solidified soil stirring process, a soil distribution area division process, a soil layer leveling process, a soil layer tamping process, a maintenance process and a detection acceptance process, and specifically comprises the following steps:

s1, measuring the roadbed, namely, firstly recovering the central line of the line through an instrument, widening and rolling the width according to the filling height of the roadbed and construction to place the position of a filling slope toe, then scattering a white line by lime, nailing a mark pile, measuring the cross section elevation of the mark pile by using a leveling instrument, accurately determining a side pile and determining the soil range on the roadbed;

s2, detecting the curing agent, soil, cement and water before entering a field, adding the mixture into a stirring device according to the mixing ratio after an optimization test, and stirring for 10-20 min, wherein the ratio of the soil, the cement and the curing agent is 85:14: 1;

s3, dividing the soil distribution area, firstly, scattering ash line grids according to the transportation volume of the transportation vehicle to ensure that one vehicle is added into one grid to ensure the thickness of loose pavement.

S4, soil layer leveling, namely pushing, rolling and loosening the solidified soil paved in the grid through a grader matched with a solidified soil construction leveling instrument, so that the soil layer is leveled from two sides to the middle;

s5, in the soil layer tamping process, firstly, a heavy vibratory roller is used for static pressure or light vibration to stabilize pressure, then strong vibration is carried out to compact the soil layer, the filling thickness and the flatness of the filling layer are checked before rolling, rolling can be carried out after the filling layer meets the requirements, the rolling pass is adjusted according to the transformation of data obtained by detection, after the filling layer is detected to be qualified, the next procedure can be carried out, unqualified soil layers need to be subjected to pressure compensation, and then the soil layer is detected again until the soil layer is qualified;

s6, curing, namely, after the solidified soil is rolled, watering and curing are carried out regularly, the solidified soil layer is required to be ensured not to be in an over-wet or suddenly dry and suddenly wet state due to the combination of local weather conditions when watering is carried out, a curing treatment layer of a covering measure is not adopted during curing, and traffic is sealed except for a watering vehicle;

and S7, in the process of detection and acceptance, construction detection personnel enter a factory to carry out on-site sampling to detect the dry volume weight and the compactness of the construction detection personnel, and after recording, the acceptance of the road can be finished.

Furthermore, the solidified soil construction leveling device comprises a rack assembly, wherein two leveling assemblies are symmetrically and fixedly arranged on two sides of the bottom end of the rack assembly, and two leveling loosening assemblies are symmetrically arranged on one side of the rack assembly;

the frame subassembly includes the horn, the connecting plate has all been constructed to one side at horn both ends, and the bottom of two connecting plates all inclines to be constructed and has the backup pad, two the relative end of backup pad is to the one side slope of keeping away from the horn.

Further, level loose subassembly includes that two symmetries are installed in the articulated seat of backup pad one side, two all rotate in the articulated seat and install articulated ear.

Further, one side that articulated seat was kept away from to two articulated ears constructs the arc jointly, and the one end equidistance that articulated ear was kept away from to the arc constructs and has a plurality of loose claws of arc.

Further, the both sides of arc are kept away from the equal fixed mounting of one end of articulated seat and are had flexible subassembly, and the one end fixed connection in the backup pad of the loose claw of arc of keeping away from of flexible subassembly.

Further, flexible subassembly includes that construct in the axostylus axostyle one of backup pad one side and construct in axostylus axostyle two of arc one side between two, all rotate on the outer fringe face of axostylus axostyle one and axostylus axostyle two and be provided with the axle sleeve, and fixed mounting has the pneumatic cylinder between two axle sleeves.

Furthermore, the leveling component comprises two supporting arms constructed on two sides of the bottom end of the supporting plate, circular grooves are formed in the bottom ends of the opposite surfaces of the two supporting arms, supporting shafts are arranged in the two circular grooves in a rotating mode, and leveling rollers are fixedly installed on the outer edge surfaces of the supporting shafts.

Further, the one end that the horn kept away from the connecting plate is constructed and is had C type connecting seat, and the through hole has all been seted up between two parties to the top and the bottom of C type connecting seat, the bottom construction of horn has the floor.

Furthermore, two the reverse sides of connecting plate all construct the fixed plate in the middle, and the one end that the fixed plate kept away from the connecting plate constructs in the backup pad.

The invention has the technical effects and advantages that: the construction method for widening and filling the solidified soil on the expressway intercommunicated ramp roadbed has the advantages that due to the arrangement of the rack assembly, the two leveling assemblies and the two leveling loosening assemblies, the instrument is fixed on the land leveler through the rack assembly, the equipment is dragged through the land leveler, so that the land leveler finishes the pushing of the solidified soil, and due to the inclined arrangement of the two supporting plates, the rolling of the soil layer can be finished from two sides to the middle part through the two leveling rollers, and then the soil layer is loosened from two sides to the middle part through the two arc-shaped plates with the plurality of arc-shaped loosening claws, so that the soil layer is leveled, the subsequent processing is convenient to perform, the construction period is greatly shortened, the interference to the existing traffic is avoided, and the construction steps are simplified;

benefit from the setting of frame subassembly and two loose subassemblies of level, drive the frame subassembly through the leveler and remove to drive two arcs that are constructed with the loose claw of a plurality of arcs and remove, when it removes, can start many pneumatic cylinders, promote the arc through two pneumatic cylinders and drive two hinge lugs and use two hinge seats as the axle center rotation, thereby make the loose claw of adjustment arc insert the intraformational degree of depth of solidification soil, thereby the adjustment is to the loose effect of soil layer, thereby be applicable to the construction under the different situation, the practicality is stronger.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the construction of the rack assembly of the present invention;

FIG. 3 is a schematic view of the assembled frame assembly and leveling assembly of the present invention;

FIG. 4 is a schematic view of the frame assembly and the leveling loosening assembly of the present invention in an assembled state;

FIG. 5 is a schematic structural view of the leveling fluffing module of the present invention;

fig. 6 is a schematic structural view of the telescopic assembly of the present invention.

In the figure: 1. a rack assembly; 101. a support plate; 102. a connecting plate; 103. a fixing plate; 104. a horn; 105. a C-shaped connecting seat; 106. a rib plate; 2. a leveling assembly; 201. a support arm; 202. a support shaft; 203. a leveling roller; 3. leveling the loose assembly; 301. a hinged seat; 302. a hinge ear; 303. an arc-shaped plate; 304. arc loosening claws; 4. a telescoping assembly; 401. a first shaft lever; 402. a second shaft lever; 403. a shaft sleeve; 404. and a hydraulic cylinder.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a construction method for widening and filling solidified soil in a roadbed of an expressway intercommunicated ramp, which comprises a roadbed measuring process, a solidified soil stirring process, a soil distribution area dividing process, a soil layer leveling process, a soil layer tamping process, a maintenance process and a detection and acceptance process, and the concrete processes are as follows:

s1, in the roadbed measuring process, firstly, the central line of the line is recovered through an instrument, the construction widening and rolling width is added according to the roadbed filling height so as to place the position of a filling slope toe, then a white line is scattered through lime, meanwhile, a mark pile is nailed, the cross section elevation of the mark pile is measured through a leveling instrument, a side pile is accurately determined, and the soil range on the roadbed is determined;

s2, detecting the curing agent, soil, cement and water before entering a field, adding the curing agent, the soil, the cement and the water into stirring equipment according to the mixing ratio after an optimization test, and stirring for 10-20 min, wherein the ratio of the soil, the cement and the curing agent is 85:14: 1;

s3, dividing the soil distribution area, firstly, scattering gray line grids according to the transportation volume of the transportation vehicles to ensure that one vehicle is added into one grid to ensure the thickness of loose pavement.

As shown in fig. 1, 2 and 4, in order to complete soil leveling and reduce construction period and avoid interference to existing traffic, the leveling apparatus for solidified soil construction comprises a frame assembly 1, wherein two leveling assemblies 2 are symmetrically and fixedly mounted on two sides of the bottom end of the frame assembly 1, two leveling loosening assemblies 3 are symmetrically mounted on one side of the frame assembly 1, the frame assembly 1 comprises a machine arm 104, a connecting plate 102 is constructed on one side of two ends of the machine arm 104, a supporting plate 101 is obliquely constructed on the bottom end of each connecting plate 102, the opposite ends of the two supporting plates 101 are inclined towards the side far away from the machine arm 104, the apparatus is dragged by a grader, so that the grader completes pushing of solidified soil, and due to the inclined arrangement of the two supporting plates 101, soil layer pressing can be completed by the two leveling assemblies 2 from two sides to the middle part, loosening the soil layer is accomplished by both sides to the middle part through two loose subassemblies 3 of leveling again to the completion is to the flattening of soil layer, so that going on of follow-up processing, has shortened the time limit for a project by a wide margin, avoids causing the interference to current traffic, and has simplified the construction procedure.

As shown in fig. 1 and 3, in order to roll the soil layer from two sides to the middle, the leveling assembly 2 includes two supporting arms 201 configured at two sides of the bottom end of the supporting plate 101, circular grooves are formed at the bottom ends of the facing surfaces of the two supporting arms 201, supporting shafts 202 are rotatably arranged in the two circular grooves, leveling rollers 203 are fixedly mounted on the outer edge surfaces of the supporting shafts 202, and due to the inclined arrangement of the two supporting plates 101, rolling of the soil layer can be completed from two sides to the middle through the two leveling rollers 203.

As shown in fig. 1, 4, 5, for accomplish loosening the soil layer by both sides to the middle part wherein, it includes that two symmetries are installed in the articulated seat 301 of backup pad 101 one side to level loose subassembly 3, two all rotate in the articulated seat 301 and install articulated ear 302, and one side that articulated seat 301 was kept away from to two articulated ear 302 is constructed jointly and is had arc 303, and the one end equidistance that articulated ear 302 was kept away from to arc 303 is constructed and is had a plurality of loose claws 304 of arc, because the slope setting of two backup pads 101. Loosening of the soil layer can be accomplished from both sides to the middle by two curved plates 303 constructed with a plurality of curved loosening claws 304.

As shown in fig. 4, 5 and 6, in order to adjust the effect of soil loosening, and thus to be suitable for different construction conditions, both ends of the arc-shaped plate 303 far away from the hinged seat 301 are fixedly provided with the telescopic assembly 4, and one end of the telescopic assembly 4 far away from the arc-shaped loosening claw 304 is fixedly connected to the support plate 101, the telescopic assembly 4 comprises a first shaft rod 401 centrally configured on one side of the support plate 101 and a second shaft rod 402 configured on one side of the arc-shaped plate 303, the outer edge surfaces of the first shaft rod 401 and the second shaft rod 402 are both rotatably provided with shaft sleeves 403, and a hydraulic cylinder 404 is fixedly installed between the two shaft sleeves 403, the grader belt frame assembly motor 1 moves to drive the two arc-shaped plates 303 configured with a plurality of arc-shaped loosening claws 304 to move, and when moving, a plurality of hydraulic cylinders 404 can be started, the two hydraulic cylinders 404 push the arc-shaped plates 303 to drive the hinged ears 302 to rotate around the two hinged seats 301, thereby make the loose claw 304 of adjustment arc insert the intraformational degree of depth of solidification soil to the adjustment is to the loose effect of soil layer, thereby is applicable to the construction under the different situation, and the practicality is stronger.

As shown in fig. 2, in order to realize the connection between the instrument and the grader, a C-shaped connecting seat 105 is configured at one end of the arm 104 away from the connecting plate 102, a through hole is formed in the center of each of the top end and the bottom end of the C-shaped connecting seat 105, a rib plate 106 is configured at the bottom end of the arm 104, a fixing plate 103 is configured in the center of each of the two opposite surfaces of the connecting plate 102, one end of the fixing plate 103 away from the connecting plate 102 is configured on the supporting plate 101, and the instrument and the grader can be connected by matching a prepared bolt with the through holes formed in the top end and the bottom end of the C-shaped connecting seat 105.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The construction method for widening and filling solidified soil of the expressway intercommunicating ramp roadbed is characterized by comprising a roadbed measuring process, a solidified soil stirring process, a soil distribution area dividing process, a soil layer leveling process, a soil layer tamping process, a maintenance process and a detection and acceptance process, and comprises the following specific processes:

s3, dividing the soil distribution area, namely firstly, scattering gray line grids according to the transportation volume of a transportation vehicle to ensure that one vehicle is added into one grid to ensure the thickness of loose pavement;

s6, curing, namely, after the solidified soil is rolled, regularly sprinkling water for curing, wherein the water sprinkling occasion is combined with the local weather condition, so that the solidified soil layer is not in an excessively humid or suddenly dry and suddenly humid state, a curing treatment layer with a covering measure is not adopted during the curing period, and the traffic is closed outside the sprinkler;

2. The construction method of the highway intercommunication ramp roadbed widening filling solidified soil according to claim 1, characterized by comprising the following steps: the solidified soil construction leveling instrument comprises a rack assembly (1), wherein two leveling assemblies (2) are symmetrically and fixedly installed on two sides of the bottom end of the rack assembly (1), and two leveling loosening assemblies (3) are symmetrically installed on one side of the rack assembly (1);

the rack assembly (1) comprises a machine arm (104), connecting plates (102) are constructed on one sides of two ends of the machine arm (104), supporting plates (101) are constructed at the bottom ends of the two connecting plates (102) in an inclined mode, and the opposite ends of the two supporting plates (101) are inclined towards one side far away from the machine arm (104).

3. The construction method of the highway intercommunication ramp roadbed widening filling solidified soil according to claim 2, characterized by comprising the following steps: level loose subassembly (3) and include that two symmetries are installed in articulated seat (301) of backup pad (101) one side, two all rotate in articulated seat (301) and install articulated ear (302).

4. The construction method for widening the roadbed of the expressway intercommunicating ramp road according to claim 3, wherein the construction method comprises the following steps: one sides of the two hinge lugs (302) far away from the hinge seat (301) are jointly constructed with an arc-shaped plate (303), and one end of the arc-shaped plate (303) far away from the hinge lugs (302) is equidistantly constructed with a plurality of arc-shaped loosening claws (304).

5. The construction method for widening the roadbed of the expressway intercommunicating ramp road and filling the solidified soil according to claim 4, wherein the construction method comprises the following steps: the two sides of the arc-shaped plate (303) are far away from one end of the hinge base (301) and are fixedly provided with telescopic assemblies (4), and one ends of the telescopic assemblies (4) far away from the arc-shaped loose claws (304) are fixedly connected to the supporting plate (101).

6. The construction method of the widening filling solidified soil of the expressway intercommunicating ramp road bed according to claim 5, wherein: the telescopic assembly (4) comprises a first shaft rod (401) and a second shaft rod (402), wherein the first shaft rod (401) is arranged on one side of the support plate (101) in the middle, the second shaft rod (402) is arranged on one side of the arc-shaped plate (303), shaft sleeves (403) are arranged on the outer edge surfaces of the first shaft rod (401) and the second shaft rod (402) in a rotating mode, and a hydraulic cylinder (404) is fixedly installed between the two shaft sleeves (403).

7. The construction method of the highway intercommunication ramp roadbed widening filling solidified soil according to claim 2, characterized by comprising the following steps: leveling component (2) include two support arms (201) of constructing in backup pad (101) bottom both sides, two the circular slot has all been seted up to the face bottom in opposite directions of support arm (201), and all rotates in two circular slots and is provided with back shaft (202), fixed mounting has leveling roller (203) on the outer fringe face of back shaft (202).

8. The construction method for widening the roadbed of the expressway intercommunicating ramp road according to claim 2, wherein the construction method comprises the following steps: the one end that the horn (104) kept away from connecting plate (102) is constructed C type connecting seat (105), and the top and the bottom of C type connecting seat (105) are all seted up the through hole in the middle, the bottom of horn (104) is constructed floor (106).

9. The construction method of the highway intercommunication ramp roadbed widening filling solidified soil according to claim 8, characterized by comprising the following steps: the opposite surfaces of the two connecting plates (102) are both provided with a fixing plate (103) in the center, and one end, far away from the connecting plates (102), of the fixing plate (103) is arranged on the supporting plate (101).