In-situ deposited prefabricated combined retaining wall structure
Technical field
The utility model relates to a kind of in-situ deposited prefabricated combined retaining wall structure, belongs to highway engineering field, to be applicable in highway engineering by landform, building line, to close on building etc. and affect, Retaining Wall Engineering when cannot normally put slope by design.
Background technology
Retaining wall refers to that supporting is banketed or the hillside soil body, prevented from banketing or the knot divine force that created the universe of soil deformation unstability, in the retaining structure engineering for engineerings such as highway, railway, water conservancy, buildings.Retaining wall form and huge number, different according to its rigidity, rigid retaining wall, flexible retaining wall two class can be divided into.
Rigid retaining wall refers to the retaining wall adopting some rigid materials such as barnacle or concreting to be formed, such as marsonary retaining wall, reinforced concrete retaining wall, anchor rod retaining wall etc., and such retaining wall distortion itself is less, and after wall, soil pressure is larger.Rigid retaining wall speed of application is comparatively slow, and construction all needs the long period, as marsonary retaining wall, need block stone successively to superpose, need cement mortar to bond between block stone, reinforced concrete retaining wall then needs on-the-spot assembling reinforcement, settle template, then concreting.
Flexible retaining wall under soil pressure effect, deflection deformation can occur, and to the soil-baffling structure that size and the distribution of soil pressure have an impact.Ecological retaining wall belongs to flexible retaining wall, ecological retaining wall be a kind of can play ecological, environmental protective effect, have landscape function concurrently and a retaining wall that can prevent erosion again.The body of wall being used for supporting filling material that common ecological retaining wall structure is formed by layered stacked Multi-layer ecological bag, every layer of ecology bag comprises multiple ecology bag, connected by junction button between each adjacent ecology bag of body of wall, and transversal reinforcement body is set in body of wall, the displacement deformation that this structure retaining wall can prevent to some extent ecology bag retaining wall comes off.But because wall body rigidity is on the low side, when retaining wall height is excessive, its construction earthwork is large, and difficulty of construction is large, after wall, soil pressure, distortion are difficult to control.
In sum, although existing retaining wall structure can have a better effect under suitable engineering specifications, but still existence needs improvements.Given this, according to the needs of current engineering reality, needing a kind of whole structural stability of invention badly high, in conjunction with the advantage of rigid retaining wall and flexible retaining wall, playing the retaining wall structure of environmental-protection function when ensureing support effect simultaneously.
Summary of the invention
The purpose of this utility model is for existing retaining wall structure Problems existing in actual applications, a kind of in-situ deposited prefabricated combined retaining wall structure is provided, this structure has that resistance to overturning is good, intensity is high, has the in-situ deposited prefabricated combined retaining wall structure of ecological afforestation effect concurrently simultaneously.
In order to realize above-mentioned technical purpose, the utility model have employed following technical scheme:
A kind of in-situ deposited prefabricated combined retaining wall structure, is characterized in that described retaining wall structure comprises cast-in-situ concrete short limb plate T-shaped post and prefabricated breast boards; Cast-in-situ concrete short limb plate T-shaped post is made up of short limb plate and rib post, and short limb plate and prefabricated breast boards are provided with concavo-convex tongue-and-groove and screw hole; Agreed with by concavo-convex tongue-and-groove between short limb plate and prefabricated breast boards, and be fixedly connected with by Screw arbor with nut at both-ends; Prefabricated breast boards is provided with drain hole and screw hole; Inside prefabricated breast boards, drain hole vertical direction is provided with rubble vertical drainage body; Also be provided with cellular concrete lightweight soil layer inside prefabricated breast boards, cellular concrete lightweight soil layer builds stepped in roadbed side; Prefabricated breast boards arranged outside has planting technique Hanging Basket.
Described cast-in-situ concrete short limb plate T-shaped post is formed by concreting.
Described prefabricated breast boards is formed by concrete prefabricated.
Described in-situ deposited prefabricated combined retaining wall structure, it is characterized in that the rib column length of described cast-in-situ concrete short limb plate T-shaped post is in short limb plate, short limb plate is only arranged more than ground, the below ground part of cast-in-situ concrete short limb plate T-shaped post only arranges rib post, short limb plate top is higher than rib post, and the discrepancy in elevation at both tops is road surface thickness.Described in-situ deposited prefabricated combined retaining wall structure, it is characterized in that the drain hole that described prefabricated breast boards is arranged is quincunx laying, be provided with gutter in drain hole, gutter is surrounded by anti-filter geotextiles near retaining wall inner opposite end.
Described rubble drainage channel is vertically arranged along drain hole, the big up and small down structure of rubble drainage channel.
Described planting technique Hanging Basket is connected with prefabricated breast boards by expansion bolt, and planting technique basket is positioned at gutter bottom, realizes rainwater from irrigating.
The construction method of above-mentioned in-situ deposited prefabricated combined retaining wall structure, comprises the following steps:
Step one, treatment construction are on-the-spot: according to design drawing, process construction plant, surveying and locating;
Step 2, cast-in-situ concrete short limb plate T-shaped post are constructed: cast-in-situ concrete short limb plate T-shaped post is made up of short limb plate and rib post, and short limb plate position is provided with screw hole, adopt steel concrete to be made; Set cast-in-situ concrete short limb plate T-shaped post in roadbed one or both sides, cast-in-situ concrete short limb plate T-shaped post embeds bearing stratum;
Step 3, prefabricated bulkhead construction: prefabricated breast boards has reinforced concrete prefabricated forming, prefabricated breast boards is arranged screw hole and drain hole; Prefabricated breast boards sets downwards, and is alignd in screw hole position after aliging with the concavo-convex tongue-and-groove on cast-in-situ concrete short limb plate T-shaped post by the concavo-convex tongue-and-groove on prefabricated breast boards;
Step 4, layout Screw arbor with nut at both-ends: embed after cast-in-place mixed earth short limb plate T-shaped post until prefabricated breast boards, by Screw arbor with nut at both-ends through screw hole, carry out combination to it and fix;
Step 5, to fix a drainpipe: PVC one end being surrounded by anti-filter geotextiles, insert in the drain hole of prefabricated breast boards;
Step 6, planting technique basket are constructed: after prefabricated breast boards installation, fixed by expansion bolt and prefabricated breast boards by planting technique basket, planting technique basket is placed in drain hole bottom, the ponding of discharging for access or rainwater;
Step 7, rubble vertical drainage body construction: inside prefabricated retaining wall, install template along drain hole vertical direction, big up and small down shape, and rubble is thrown in its inside, form rubble vertical drainage body;
Step 8, cellular concrete light soil are constructed: after rubble vertical drainage body construction completes, build cellular concrete lightweight soil layer, build stepped in roadbed side inside prefabricated breast boards;
Step 9, gutter construction: at toe of retaining wall, place arranges gutter.
The utility model has following feature and beneficial effect:
(1) cast-in-situ concrete short limb plate T-shaped post is in " T " font, there is larger specific area and bending rigidity, be conducive to playing side friction and horizontal resist forces, vertical and horizontal bearing performance is good, simultaneously short limb plate is provided with concavo-convex tongue-and-groove, is convenient to agree with the concavo-convex tongue-and-groove that arranges on prefabricated breast boards.
(2) cast-in-situ concrete short limb plate T-shaped post and prefabricated breast boards precalculated position are provided with screw hole, are convenient to the layout of Screw arbor with nut at both-ends, cast-in-situ concrete short limb plate T-shaped post and prefabricated breast boards are combined closely, adds the globality of retaining wall structure.
(3) inside the drain hole prefabricated breast boards arranged and prefabricated breast boards, the setting of rubble vertical drainage body, guarantees that roadbed internal water accumulation is discharged in time; Meanwhile, prefabricated breast boards arranged outside planting technique basket, it is positioned at drain hole bottom, makes full use of the ponding of discharging in roadbed and irrigates plant, achieves the irrigation certainly of ponding, rainwater.
(4) prefabricated breast boards is provided with cellular concrete light soil, and build stepped in roadbed side, reduce the horizontal earth pressure of roadbed, and add the resistance to capsizing of retaining wall, also mitigate roadbed weight simultaneously, be conducive to reducing subgrade settlement, improve the resistance to overturning of roadbed and retaining wall.
Accompanying drawing explanation
Fig. 1 is the stereogram of the utility model cast-in-situ concrete short limb plate T-shaped post;
Fig. 2 is the stereogram of the prefabricated breast boards of the utility model;
Fig. 3 is the plan view of a kind of in-situ deposited prefabricated combined retaining wall structure of the utility model;
Fig. 4 is the sectional drawing of Fig. 3 along A-A direction;
Fig. 5 is the sectional drawing of Fig. 3 along B-B direction;
Fig. 6 is the sectional drawing of Fig. 4 along C-C direction.
In figure: 1-cast-in-situ concrete short limb plate T-shaped post, 2-rib post, 3-short limb plate, the prefabricated breast boards of 4-, 5-screw hole, 6-drain hole, 7-Screw arbor with nut at both-ends, 8-gutter, 9-rubble vertical drainage body, 10-planting technique basket, 11-cellular concrete light soil, 12-roadbed filling, 13-road structure, 14-bearing stratum, 15-Soft Soil Layer, 16-gutter.
Detailed description of the invention
Be described in further details the utility model by embodiment below in conjunction with accompanying drawing, following examples are not limited to following examples to explanation of the present utility model.
Fig. 1 is the stereogram of the utility model cast-in-situ concrete short limb plate T-shaped post, Fig. 2 is the stereogram of the prefabricated breast boards of the utility model, Fig. 3 is the plan view of a kind of in-situ deposited prefabricated combined retaining wall structure of the utility model, Fig. 4 is the sectional drawing of Fig. 3 along A-A direction, Fig. 5 is the sectional drawing of Fig. 3 along B-B direction, and Fig. 6 is the sectional drawing of Fig. 3 along C-C direction.With reference to shown in Fig. 1 ~ 6, in-situ deposited prefabricated combined retaining wall structure is primarily of part compositions such as cast-in-situ concrete short limb plate T-shaped post 1, prefabricated breast boards 4, rubble vertical drainage body 9, cellular concrete light soil 11, road structures 13.
Cast-in-situ concrete short limb plate T-shaped post 1 and prefabricated breast boards 4 all adopt reinforced concrete structure, and employing strength grade is that the concreting of C30 forms, and lays reinforcing bar respectively in concrete according to design.The long 2000mm of rib post 2 of cast-in-situ concrete short limb plate T-shaped post 1, wide 1500mm, high 9700mm; The long 600mm of short limb plate 3, maximum gauge degree 800mm, high 10000mm.Rib post 2 top is the thickness of road surface structare layer lower than the height at short limb plate 3 top.The wide 3000mm of prefabricated breast boards 4, thick 500mm.The degree of depth that cast-in-situ concrete short limb plate T-shaped post 1 embeds bearing stratum 14 is determined by Stability Checking, and the present embodiment insert depth is 1000mm.
Short limb plate 3 and prefabricated breast boards 4 are provided with screw hole 5, and screw hole 5 diameter is 50mm.After being agreed with by concavo-convex tongue-and-groove between short limb plate 3 and prefabricated breast boards 4, Screw arbor with nut at both-ends 7 is adopted to be fixedly connected with.
Drain hole 6 on prefabricated breast boards is quincunx even laying on prefabricated breast boards, and vertical spacing is 1000mm, and horizontal spacing is 2000mm.Drain hole 6 placed inside gutter 8, gutter 8 adopts diameter to be the PVC of 60mm, is being surrounded by anti-filter geotextiles near retaining wall inner opposite end.
Planting technique basket 10 adopts that PVC material is prefabricated to be formed, and green plants can be planted in inside.Planting technique basket 10 is fixed on outside prefabricated breast boards 4 by expansion bolt, planting technique basket 10 placement location a little less than gutter 8, for receiving the rainwater or ponding of discharging inside retaining wall.
Rubble vertical drainage body 9 is arranged between cellular concrete light soil 11 and prefabricated breast boards 4, and rubble vertical drainage body 9 adopts diameter to be that the rubble of 30mm ~ 40mm fills and forms, the infundibulate that rubble vertical drainage body 9 is big up and small down.
Inside cast-in-situ concrete short limb plate T-shaped post 1, pour into bubble concrete light soil 11, cellular concrete light soil 11 is stepped, and step pitch is 1500mm, and the discrepancy in elevation is 1500mm.Cellular concrete light soil 11 material specification is that unit weight is not more than 6KN/m3, Mined scale strength should meet 28 days intensity >=0.8Mpa, degree of mobilization is at 180mm ± 20mm.Treat that cellular concrete light soil 11 reaches some strength laggard walking along the street dike central area roadbed filling 12 and constructs, and then carry out road structure 13 and construct, road structure 13 top mark height flushes with cast-in-situ concrete short limb plate T-shaped post 1 top mark is high.
Gutter 16 is located at outside cast-in-situ concrete short limb plate T-shaped post 1, adopt concreting form, its cross section is trapezoidal, upper wide be 500mm, lower wide be 300mm, height is 400mm, and bottom of trench does Anti-seeping technology.
The main construction course of above-mentioned in-situ deposited prefabricated combined retaining wall is as follows:
Step one, treatment construction are on-the-spot: according to design drawing, process construction plant, surveying and locating;
Step 2, cast-in-situ concrete short limb plate T-shaped post 1 are constructed: cast-in-situ concrete short limb plate T-shaped post 1 is made up of short limb plate 3 and rib post 2, and short limb plate 3 position is provided with screw hole, adopt steel concrete to be made.Set cast-in-situ concrete short limb plate T-shaped post 1 in roadbed one or both sides, cast-in-situ concrete short limb plate T-shaped post 1 embeds bearing stratum 1000m;
Step 3, prefabricated breast boards 4 are constructed: prefabricated breast boards 4 is formed by reinforced concrete prefabricated, prefabricated breast boards 4 are provided with screw hole 5 and drain hole 6.After concavo-convex tongue-and-groove on prefabricated breast boards 4 aligns with the concavo-convex tongue-and-groove on cast-in-situ concrete short limb plate T-shaped post 1, utilize machinery to be set by prefabricated breast boards 4 downwards, and alignd in screw hole position;
Step 4, layout Screw arbor with nut at both-ends 7: after cast-in-situ concrete short limb plate T-shaped post 1 and prefabricated breast boards 4 have set, by Screw arbor with nut at both-ends 7 through screw hole 5, carry out combination to it and fix;
Step 5, fix a drainpipe 8: PVC one end being surrounded by anti-filter geotextiles, put into the drain hole 6 of prefabricated breast boards;
Step 6, planting technique basket 10 are constructed: after the installation of prefabricated breast boards 4, planting technique basket 10 is fixed by expansion bolt and prefabricated breast boards 4, planting technique basket 10 is placed in drain hole 6 bottom, for ponding, the rainwater of discharging inside access retaining wall;
Step 7, rubble vertical drainage body 9 are constructed: inside prefabricated breast boards 4, install template along drain hole vertical direction, big up and small down shape, and are the rubble of 30mm ~ 40mm to its inside input diameter, form rubble vertical drainage body 9;
Step 8, cellular concrete light soil 11 are constructed: after rubble vertical drainage body 9 has been constructed, and build cellular concrete lightweight soil layer 11 inside prefabricated breast boards, water in roadbed side build up stepped;
Step 9, gutter 16 are constructed: in cast-in-situ concrete short limb plate T-shaped post 1 arranged outside gutter 16.