CN204753262U - A fender structure on high embankment of existing railway - Google Patents
A fender structure on high embankment of existing railway Download PDFInfo
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- CN204753262U CN204753262U CN201520394344.5U CN201520394344U CN204753262U CN 204753262 U CN204753262 U CN 204753262U CN 201520394344 U CN201520394344 U CN 201520394344U CN 204753262 U CN204753262 U CN 204753262U
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- counterfort
- wall
- existing railway
- retaining wall
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Abstract
The utility model relates to a fender structure on high embankment of existing railway. During newly -built or reconstructed railway, according to newly -increased railway functional requirement, need set up a fender structure sometimes on the high embankment of existing railway, the operation safety of existing railway still will be guaranteed to the while. The utility model discloses set up the board -like retaining wall of fore -and -aft counterfort in the high embankment side slope of existing railway, including wall bottom plate, upright wallboard and counterfort board, wall bottom plate below is provided with the drilled pile, the board -like retaining wall inboard of counterfort is provided with multilayer geotextile grid, and the geogrid inboard is provided with that vertical one -tenth row arrange digs the hole stake, the upright wallboard medial surface of the board -like retaining wall of counterfort is provided with fore -and -aft one deck loaded filter, and the bottom is the water barrier, and the top is for sealing the water layer, the foundation ditch in the board -like retaining wall of the counterfort outside adopts the earthen backfill of pseudo -ginseng ash. The utility model has the advantages of safe and reliable, durable, the construction is just easy, can effectively ensure the normal implementation of newly -increased rail facility and use to guarantee the operation safety of existing railway.
Description
Technical field
The utility model belongs to railway traffic construction technique field, is specifically related to retaining structure on a kind of existing railway height embankment.
Background technology
Due to the needs of railway development, during newly-built or reconstructed railway, according to functional requirements such as newly-increased railway station building, sometimes need that retaining structure is set on existing railway height embankment and carry out closing slope, also will ensure the operation security of existing railway simultaneously.When existing railway embankment adopts the fillers such as fine grained soils to fill, its bearing capacity of foundation soil often can not meet the designing requirement of retaining structure, and the sedimentation of retaining structure also will be comparatively large, therefore need adopt a kind of special structure form.And existing railway operation security is unaffected during for ensureing retaining structure construction, interim gear need be set and protects measure and carry out reinforcement protection.
Utility model content
The purpose of this utility model is to provide retaining structure on a kind of existing railway height embankment, carries out effective gear protect existing railway height embankment.
The technical scheme that the utility model adopts is:
Retaining structure on a kind of existing railway height embankment, is characterized in that:
In existing railway height side slope of embankment, longitudinal counterfort plate type retaining wall is set;
Counterfort plate type retaining wall comprises wall plate longitudinally vertical on the wall base plate of level and wall base plate;
The drilled pile of longitudinally layout in column is provided with below the wall base plate of counterfort plate type retaining wall;
Be provided with multilayer geo-grid inside counterfort plate type retaining wall, inside geo-grid, be provided with the hole digging pile of longitudinally layout in column.
Counterfort plate that be provided with multiple tracks transverse direction between the wall base plate of counterfort plate type retaining wall and the inner side of wall plate, that cross section is triangular in shape.
The wall base plate of counterfort plate type retaining wall is vertically arranged with the shrinkage joint of multiple tracks transverse direction.
The wall plate medial surface of counterfort plate type retaining wall is provided with longitudinal one deck loaded filter, and loaded filter is bagged sand folder cobble;
Be provided with the concrete water barrier of C35 bottom loaded filter, build C35 concrete water shutoff layer at top.
Foundation ditch outside counterfort plate type retaining wall adopts 37 lime earth backfill.
The wall plate of counterfort plate type retaining wall is staggeredly equipped with spilled water hole.
The utility model has the following advantages:
On existing railway height embankment of the present utility model, a gear, has safe and reliable, durable in use, easy advantage of constructing, for the safe operation of railway provides powerful guarantee.
Accompanying drawing explanation
Fig. 1 is the utility model structure chart.
Fig. 2 is counterfort plate type retaining wall structure chart.
Fig. 3 is hole digging pile layout plan.
Fig. 4 is the longitudinal arrangement diagram of hole digging pile.
In figure, 1-drilled pile, 2-counterfort plate type retaining wall, 3-geo-grid, 4-hole digging pile, 5-37 lime earth, 6-spilled water hole, 7-loaded filter, 8-water barrier, 9-water shutoff layer, 10-wall plate, 11-counterfort plate, 12-wall base plate, 13-heel slab, 14-toe board, 15-shrinkage joint.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the utility model is described in detail.
Retaining structure on the existing railway height embankment that the utility model relates to, arranges longitudinal counterfort plate type retaining wall 2 in existing railway height side slope of embankment.The high 9.5m of counterfort retaining wall 2, embedded depth of foundation is not less than 1.0m.Counterfort plate type retaining wall 2 comprises wall plate 10 longitudinally vertical on the wall base plate 12 of level and wall base plate 12, counterfort plate 11 that be provided with multiple tracks transverse direction between the wall base plate 12 of counterfort plate type retaining wall 2 and the inner side of wall plate 10, that cross section is triangular in shape.The wall base plate 12 of counterfort plate type retaining wall 2 is vertically arranged with the shrinkage joint 15 of multiple tracks transverse direction, shrinkage joint 15 spacing 10-15m, stitches wide 0.02m, tunneling boring filling pitch hemp cut in seam.The wall plate 10 of counterfort plate type retaining wall 2 is staggeredly equipped with spilled water hole 6, aperture 0.10m.Wall plate 10 medial surface of counterfort plate type retaining wall 2 is provided with longitudinal one deck loaded filter 7, and loaded filter 7 is bagged sand folder cobble, thick 0.5m; Be provided with the concrete water barrier 8 of C35 bottom loaded filter 7, build C35 concrete water shutoff layer 9 at top.Foundation ditch outside counterfort plate type retaining wall 2 adopts 37 lime earth 5 to backfill.
The drilled pile 1 of longitudinally layout in column is provided with below the wall base plate 12 of counterfort plate type retaining wall 2.Drilled pile 1 is reinforced concrete post, stake footpath 1.0m, the long 22m of stake, longitudinally arranges by biserial along counterfort plate type retaining wall 2.Be provided with multilayer geo-grid 3 inside counterfort plate type retaining wall 2, inside geo-grid 3, be provided with the hole digging pile 4 of longitudinally layout in column.Hole digging pile 4 is reinforced concrete post, stake footpath 1.25m, the long 17m of stake, and pile spacing is 1.6m.The reinforced concrete circular retaining wall that 0.15m is thick is set in hole digging pile 4 work progress.
The construction method of retaining structure on above-mentioned existing railway height embankment, is realized by following steps:
Step one: on existing railway height side slope of embankment, the inner side of geo-grid 3 position construction hole digging pile 4, jump stakes excavation at interval of being not less than 2 pile positions during construction, the construction of adjacent studs position is greater than 24h interval time.Security protection work should be carried out before construction, during construction, enough earth-moving plants and emergency set etc. should be equipped with.Annular retaining wall should be performed in time during borehole, should descending reinforcing cage and concrete perfusion in time after borehole completes, hole digging pile curing time is generally 28 days.
Step 2: after hole digging pile 4 reaches design strength, the soil body before hole digging pile 4 is excavated in segmentation job-hopping from top to down, is excavated to the height of counterfort plate type retaining wall 2 wall base plate 12, reserved geo-grid 3 position.The soil body after excavation is transported to spoil ground in time.
Step 3: the drilled pile 1 below construction counterfort plate type retaining wall 2.Reinforced concrete pile adopts the construction of drill-pouring method, and the setting-out of stake position should guarantee that fixed point accurately, selects suitable pore-forming equipment, jumps and applies boring.After drilling depth puts in place, stake end situation should be checked.Rising and falling drill bit should be even, must not too quickly or speed change suddenly, in order to avoid collision hole wall.The test-based examinations such as hole depth, aperture, verticality, the sediment degree of depth should be carried out after pore-forming, after confirmation meets the requirements, can next process be carried out.After stake pore-forming placement of cage of reinforcing bar, concreting should strengthen the deformation observation to stake holes hole wall deformation, to protect constructor's safety.Carry out vibration compacting in the long scope of pile crown 4m, pile crown Construction Elevation should exceed design stake position 50cm, redundance should be cut during plate construction, and removes clean.
Step 4: construction counterfort plate type retaining wall 2, first assembling reinforcement, then waters walling base plate 12, wall plate 10 and counterfort plate 11 respectively, reserves the spilled water hole 6 of wall plate 10 and the shrinkage joint 15 of wall base plate 12 when building.The steel bar stress of counterfort retaining wall 2 adopts flash-butt welding, and strength of welded joint is not less than the tensile strength of reinforcing bar itself.Welding point should be located at the smaller part mutually staggering of meeting with stresses, and same cross section 35dd is the larger diameter of joint reinforcing bar and the welding point being not less than 500mm longitudinal reinforcement should not be greater than 50% of longitudinal reinforcement quantity.Same reinforcing bar should establish joint less, and in same cross section, same reinforcing bar must not more than a joint.Concreting should be strengthened vibrating and guarantee concrete density, the continuity of Concrete Structure and globality, and to improve concrete intensity, the clean protective layer thickness of outermost steel concrete of stake is 5.8cm.
Step 5: after stake 1 hole to be drilled and counterfort plate type retaining wall 2 reach design strength, employing 37 lime earth 5 backfills the foundation ditch outside counterfort plate type retaining wall 2, banketing inside placement in layers counterfort plate type retaining wall 2, banket while the loaded filter 7 of geo-grid 3 and bagged sand folder cobble is laid in layering, and build the concrete water barrier 8 of C35 and water shutoff layer 9 respectively with top bottom loaded filter 7.Geo-grid bankets surface before laying must be smooth, must not have hard ridge, forbid plant equipment directly to roll on geo-grid surface.Should strain when geo-grid is laid, must not fold be had, can fix with measure process such as plug pins if desired; Bundle must be helped between joint to cement, and bonding strength must not allow tensile strength lower than it.Geo-grid should fill filler after laying in time, avoids the long-time direct irradiation of sunlight.
Content of the present utility model is not limited to cited by embodiment, and the conversion of those of ordinary skill in the art by reading the utility model manual to any equivalence that technical solutions of the utility model are taked, is claim of the present utility model and contains.
Claims (6)
1. a retaining structure on existing railway height embankment, is characterized in that:
In existing railway height side slope of embankment, longitudinal counterfort plate type retaining wall (2) is set;
Counterfort plate type retaining wall (2) comprises wall base plate (12) and the upper longitudinally vertical wall plate (10) of wall base plate (12) of level;
Wall base plate (12) below of counterfort plate type retaining wall (2) is provided with the drilled pile (1) of longitudinally layout in column;
Counterfort plate type retaining wall (2) inner side is provided with multilayer geo-grid (3), and geo-grid (3) inner side is provided with the hole digging pile (4) of longitudinally layout in column.
2. retaining structure on a kind of existing railway height embankment according to claim 1, is characterized in that:
Counterfort plate (11) that be provided with multiple tracks transverse direction between the wall base plate (12) of counterfort plate type retaining wall (2) and the inner side of wall plate (10), that cross section is triangular in shape.
3. retaining structure on a kind of existing railway height embankment according to claim 2, is characterized in that:
The wall base plate (12) of counterfort plate type retaining wall (2) is vertically arranged with the shrinkage joint (15) of multiple tracks transverse direction.
4. retaining structure on a kind of existing railway height embankment according to claim 3, is characterized in that:
Wall plate (10) medial surface of counterfort plate type retaining wall (2) is provided with longitudinal one deck loaded filter (7), and loaded filter (7) is bagged sand folder cobble;
Loaded filter (7) bottom is provided with the concrete water barrier of C35 (8), has built C35 concrete water shutoff layer (9) at top.
5. retaining structure on a kind of existing railway height embankment according to claim 4, is characterized in that:
The foundation ditch in counterfort plate type retaining wall (2) outside adopts 37 lime earth (5) backfill.
6. retaining structure on a kind of existing railway height embankment according to claim 5, is characterized in that:
The wall plate (10) of counterfort plate type retaining wall (2) is staggeredly equipped with spilled water hole (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520394344.5U CN204753262U (en) | 2015-06-09 | 2015-06-09 | A fender structure on high embankment of existing railway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520394344.5U CN204753262U (en) | 2015-06-09 | 2015-06-09 | A fender structure on high embankment of existing railway |
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| CN204753262U true CN204753262U (en) | 2015-11-11 |
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| CN201520394344.5U Active CN204753262U (en) | 2015-06-09 | 2015-06-09 | A fender structure on high embankment of existing railway |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104894926A (en) * | 2015-06-09 | 2015-09-09 | 中铁第一勘察设计院集团有限公司 | Retaining structure on existing railway high embankment and construction method thereof |
| CN109778902A (en) * | 2019-01-16 | 2019-05-21 | 广东工业大学 | A kind of ruggedized construction of retaining wall |
| CN111794268A (en) * | 2020-06-01 | 2020-10-20 | 中铁大桥科学研究院有限公司 | Composite retaining wall and construction method thereof |
| CN114427232A (en) * | 2022-01-14 | 2022-05-03 | 中铁二院工程集团有限责任公司 | System and method for reinforcing loose soil slope embankment in plateau strong earthquake region |
-
2015
- 2015-06-09 CN CN201520394344.5U patent/CN204753262U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104894926A (en) * | 2015-06-09 | 2015-09-09 | 中铁第一勘察设计院集团有限公司 | Retaining structure on existing railway high embankment and construction method thereof |
| CN109778902A (en) * | 2019-01-16 | 2019-05-21 | 广东工业大学 | A kind of ruggedized construction of retaining wall |
| CN111794268A (en) * | 2020-06-01 | 2020-10-20 | 中铁大桥科学研究院有限公司 | Composite retaining wall and construction method thereof |
| CN114427232A (en) * | 2022-01-14 | 2022-05-03 | 中铁二院工程集团有限责任公司 | System and method for reinforcing loose soil slope embankment in plateau strong earthquake region |
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