CN210886796U

CN210886796U - Subgrade is consolidated to weak soil

Info

Publication number: CN210886796U
Application number: CN201921531702.7U
Authority: CN
Inventors: 马洋根; 姜安; 刘雷雷
Original assignee: Lanhai Construction Group Co ltd
Current assignee: Lanhai Construction Group Co ltd
Priority date: 2019-09-12
Filing date: 2019-09-12
Publication date: 2020-06-30
Anticipated expiration: 2029-09-12

Abstract

The utility model discloses a road bed is consolidated to weak soil, relate to road construction technical field, it includes that the first order that sets gradually from bottom to top joins in marriage the metalling, place the geogrid net on first order joining in marriage the metalling upper portion, place the second level on geogrid net upper portion and join in marriage the metalling, the geogrid net includes a plurality of grids that extend along road length direction, connect through coupling assembling between the grid, coupling assembling is including connecting the bending strip in grid one side, the vertical through-hole of seting up on bending strip upper portion, connect on grid upper portion and be close to the lock post of bending strip one side, the through-hole cover is established at the lock post outsidely. The utility model discloses have quick effect of connecting two adjacent geogrids.

Description

Subgrade is consolidated to weak soil

Technical Field

The utility model belongs to the technical field of the road construction technique and specifically relates to a road bed is consolidated to weak soil is related to.

Background

At present, in the process of constructing a highway subgrade, because the subgrade filler in a natural state has loose structure and poor strength and stability, and certain road sections are positioned on soft soil foundations, the highway subgrade is difficult to meet the requirements of road traffic load and natural environment action, the subgrade is inevitably required to be manually compacted again, and necessary reinforcement treatment engineering is carried out to ensure that the strength and stability indexes of the subgrade meet the requirements of design and specification. The main engineering of the roadbed reinforcement engineering is to support a natural side slope to keep soil body stable or strengthen the strength and stability of the roadbed, and to protect the side slope from being damaged under the condition of water temperature change.

At present, chinese utility model patent that bulletin number is CN208981045U discloses a road bed is consolidated to weak soil, including dynamic compaction processing section and drainage processing section two parts, carry out dynamic compaction processing section process to the weak soil earlier, be carrying out drainage processing section process, dynamic compaction processing process includes that the dynamic compaction forms the broken stone mound in the weak soil, lays the broken stone bed course and has laid the geotechnological cloth layer of weaving, the broken stone mound top is located to the broken stone bed course, include first broken stone bed course under and the second broken stone bed course that is last, it lies in between first broken stone bed course and the second broken stone bed course to have the geotechnological cloth layer of weaving, drainage processing section process includes from supreme laying the drain bar in proper order down, laying geogrid, pile-loading sea sand, wherein will lay the sand package to the tip of geogrid and block the sand bank before pile-loading sea sand.

The above prior art solutions have the following drawbacks: when the geogrid is used, the geogrids need to be arranged along the length direction of a road, and two adjacent geogrids are connected through plastic binding ropes, so that the connection is complex.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a subgrade is consolidated to weak soil, quick connect two adjacent geogrids.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a road bed is consolidated to weak soil, includes that the first order that sets gradually from bottom to top joins in marriage the metalling, places the geogrid net on first order and joins in marriage the metalling on the metalling upper portion, places the second level that joins in marriage the metalling on geogrid net upper portion, the geogrid net includes a plurality of grids that extend along road length direction, connect through coupling assembling between the grid, coupling assembling includes the bending strip, the vertical through-hole of seting up on bending strip upper portion, connects on grid upper portion and be close to the lock post of bending strip one side of connecting in grid one side, the through-hole cover is established in the lock post outside.

Through adopting above-mentioned technical scheme, during the use, set up three with the net along its length direction earlier, three nets are the echelonment setting this moment, the length direction of three nets is for staggering the setting, make the strip upper portion of buckling not sheltered from by adjacent net, then buckle the strip to the one side that is close to the locking post that will buckle, the through-hole joint on the strip upper portion that will buckle is on the locking post, just link together between two adjacent nets this moment, it is comparatively simple and convenient to install, two adjacent nets are connected fast.

The utility model discloses further set up to, the locking post includes that vertical connection is at the montant on net upper portion, connects the fender ring at the montant lateral wall.

Through adopting above-mentioned technical scheme, be provided with the fender ring, make the locking post better with the connection condition between the strip of buckling, the condition that the strip of reducing to buckle breaks away from locking post upper portion appears.

The utility model discloses further set up to, keep off the ring middle part and seted up a plurality of spacing grooves.

Through adopting above-mentioned technical scheme, owing to set up and keep off the ring, when the through-hole moved down to baffle department this moment, kept off the ring this moment and take place to warp, the through-hole passes from keeping off the ring, plays the spacing effect to the locking post in order to make to keep off the ring, does not influence the result of use that keeps off the ring simultaneously, so keep off the vertical a plurality of spacing grooves of having seted up in the upper portion of ring, the spacing groove will keep off the ring and separate into a plurality of solitary individualities.

The utility model discloses further set up to, the upper portion of montant is connected with most advanced.

Through adopting above-mentioned technical scheme, in order to make the effect of lining up better between through-hole and the montant, so be connected with most advanced in the up end department of montant.

The utility model discloses further set up to, the upper portion of bending strip is connected with the stopper.

Through adopting above-mentioned technical scheme, set up the stopper for it is comparatively inseparable to be connected between bending strip and the adjacent net, reduces the condition that the net removed along its width direction and appears.

The utility model discloses it is further set up as, two adjacent the width of overlapping between the net is 20 cm.

By adopting the technical scheme, the overlapping part between two adjacent grids is 20cm, so that the area of the overlapping part between the two grids is moderate, the connection tightness between the grids is better, and meanwhile, the using effect of the grids is better.

The utility model discloses further set up to, still be provided with the stone cloth bits layer between geogrid net and the first order of joining in marriage the metalling.

By adopting the technical scheme, the stone chippings are granules with the particle size of 2-10 mm obtained by rolling and screening broken stones, and the stone chippings have the characteristics of hard texture, rough and porous surface, sharp edges and corners, good bonding performance and the like.

The utility model discloses further set up to, net length direction's both ends are all upwards buckled to the upper portion that the second level joined in marriage the metalling.

By adopting the technical scheme, the grid is turned upwards, so that the second-level crushed stone is wrapped on the upper part of the grid by the grid, and the situation that two ends of the second-level crushed stone slide down is reduced.

The utility model discloses further set up to, the length that the net was buckled to second level join in marriage rubble layer upper portion is 2 m.

Through adopting above-mentioned technical scheme, the length of buckling is 2m, further increases the connection relation between the rubble is joined in marriage to net and second level for the connection effect is better between the rubble is joined in marriage to net and second level.

To sum up, the utility model discloses following beneficial effect has:

1. after the grids are laid, the connection between the bending strips and the locking columns can be bent only by bending the bending strips, so that the connection condition between adjacent grids can be quickly bent;

2. the upper part of the vertical rod is connected with a tip, so that the connection between the bending strip and the vertical rod is better;

3. the baffle ring is arranged obliquely downwards, so that the through hole can conveniently penetrate through the baffle ring.

Drawings

FIG. 1 is a schematic view of the overall structure of the embodiment;

FIG. 2 is a schematic diagram of a second-stage crushed silver ball layer according to an example;

fig. 3 is an enlarged schematic view of a portion a in fig. 2.

Reference numerals: 1. a first-stage stone matching layer; 2. a stone chip layer; 3. a geogrid net; 31. a grid; 4. a second-stage stone matching layer; 5. a connecting assembly; 51. bending the strip; 52. a through hole; 53. a locking post; 531. a vertical rod; 532. a baffle ring; 533. a spacing groove; 54. a tip; 55. and a limiting block.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses a subgrade is consolidated to weak soil, include that the first order that sets gradually from bottom to top joins in marriage rubble layer 1, stone dust laying layer 2, geogrid net 3, second level and join in marriage rubble layer 4.

Referring to fig. 2-3, the geogrid net 3 includes three grids 31 extending along the length direction of the road, and the grids 31 and the adjacent grids 31 are overlapped with each other with a width of 20cm, so that the connection between the grids 31 and the adjacent grids 31 is stable. The grids 31 are connected with each other through the connecting assemblies 5, so that the condition that two adjacent grids 31 need to be connected through plastic ties manually is reduced.

Referring to fig. 3, the left end of the drawing is defined as the left side and the right end of the drawing is defined as the right side. The connection assembly 5 comprises a bending strip 51, a through hole 52, a locking stud 53. The bending strips 51 are connected to the side walls of the grids 31 close to the length of the adjacent grids 31, a plurality of bending strips 51 are arranged along the length direction of the grids 31, and the bending strips 51 are made of plastic materials; the through-hole 52 is vertically opened on the bending strip 51, the locking post 53 is provided with a plurality of upper parts which are fixedly connected on one side of the grid 31 close to the bending strip 51, and each locking post 53 is matched with the bending strip 51 for use.

Referring to fig. 2-3, when in use, the left grid 31 is placed on the upper part of the stone chip layer 2, the grids 31 are sequentially laid on the right side of the left grid 31, at the moment, the length direction of the grids 31 is staggered, the bending strips 51 penetrate through the grids 31, and the through holes 52 on the upper parts of the bending strips 51 are clamped on the locking columns 53.

Referring to fig. 3, the locking post 53 includes a vertical bar 531 connected to the upper end surface of the grid 31 and near one side of the bending strip 51, and a stopper 532 connected to the outer side wall of the vertical bar 531, wherein the stopper 532 is close to the upper end surface of the grid 31 from the connection point with the vertical bar 531.

Referring to fig. 3, in order to facilitate the alignment between the through hole 52 and the stem 531, a tip 54 is connected to an upper end surface of the stem 531, and the tip 54 has a conical shape.

Referring to fig. 3, due to the arrangement of the blocking ring 532, when the through hole 52 moves downward toward the baffle, the blocking ring 532 deforms, and the through hole 52 penetrates through the blocking ring 532, so that the blocking ring 532 has a limiting effect on the locking column 53, and the using effect of the blocking ring 532 is not affected, a plurality of spacing grooves 533 are vertically formed in the upper portion of the blocking ring 532, and the blocking ring 532 is divided into a plurality of independent bodies by the spacing grooves 533.

Referring to fig. 3, in order to prevent the grid 31 placed inside the bending strip 51 from moving laterally, a stopper 55 is connected to the upper portion of the bending strip 51, the stopper 55 is located at a side of the bending strip 51 close to the locking post 53, and a side of the stopper 55 away from the locking post 53 abuts against the adjacent grid 31.

Referring to fig. 1, both ends of the mesh 31 in the length direction are bent upward to the upper portion of the second-stage stone distribution layer 4, and the bent length is 2 m.

In use, the embodiment comprises the following steps of 1, flattening: the ground of required construction is leveled with the leveler, follows the stay wire during the leveling and checks elevation, cross slope, should pay attention to the segregation phenomenon of eliminating thickness aggregate at leveling. 2. Rolling: the first time of pressure stabilization is to use a YZ18 vibratory roller for static pressure, then use a YZ18 vibratory roller for micro vibration, use YZ18 and YZ20 vibratory rollers for double vibration twice respectively, and then use a 18-21 t three-wheel roller for rolling twice, so that the required compactness is achieved, and meanwhile, no obvious wheel trace exists. 3. Laying a first-stage stone matching layer 1. 4. The grids 31 are laid, the grids 31 are three and extend along the length direction of the road, a superposition layer is arranged between the two grids 31, and then the bending strips 51 are sleeved on the adjacent locking columns 53. 5. A second stone-fitted layer 4 is laid and one end of the road is slowly pushed to the other end with a loader to prevent the geogrid net 3 from creasing. 6. The grid 31 is placed on the second-stage stone distribution layer 4 by bending both ends in the length direction.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a road bed is consolidated to weak soil, includes that the first order that sets gradually from bottom to top joins in marriage rubble layer (1), places at geogrid net (3) that the first order joined in marriage rubble layer (1) upper portion, places at geogrid net (3) upper portion second level and joins in marriage rubble layer (4), its characterized in that: geogrid net (3) are including a plurality of net (31) that extend along road length direction, connect through coupling assembling (5) between net (31), coupling assembling (5) are including connecting bending strip (51), the vertical through-hole (52) of seting up on bending strip (51) upper portion, connecting on net (31) upper portion and being close to locking post (53) of bending strip (51) one side at bending strip (51) one side, locking post (53) outside is established at through-hole (52) cover.

2. A soft soil reinforced subgrade according to claim 1, characterized in that: the locking column (53) comprises a vertical rod (531) vertically connected to the upper part of the grid (31) and a retaining ring (532) connected to the outer side wall of the vertical rod (531).

3. A soft soil reinforced subgrade according to claim 2, characterized in that: the middle part of the baffle ring (532) is provided with a plurality of spacing grooves (533).

4. A soft soil reinforced subgrade according to claim 2, characterized in that: the upper part of the vertical rod (531) is connected with a tip (54).

5. A soft soil reinforced subgrade according to claim 1, characterized in that: the upper part of the bending strip (51) is connected with a limiting block (55).

6. A soft soil reinforced subgrade according to claim 1, characterized in that: the width of the overlap between two adjacent grids (31) is 20 cm.

7. A soft soil reinforced subgrade according to claim 1, characterized in that: and a stone distribution chip layer (2) is also arranged between the geogrid net (3) and the first-stage stone distribution layer (1).

8. A soft soil reinforced subgrade according to claim 1, characterized in that: both ends of the grid (31) in the length direction are bent upwards to the upper part of the second-stage stone distribution layer (4).

9. A soft soil reinforced subgrade according to claim 1, characterized in that: the length of the grid (31) bent towards the upper part of the second-stage stone matching layer (4) is 2 m.