CN201125354Y - Steep hill road bed branch block reinforced structure - Google Patents
Steep hill road bed branch block reinforced structure Download PDFInfo
- Publication number
- CN201125354Y CN201125354Y CNU2007200820877U CN200720082087U CN201125354Y CN 201125354 Y CN201125354 Y CN 201125354Y CN U2007200820877 U CNU2007200820877 U CN U2007200820877U CN 200720082087 U CN200720082087 U CN 200720082087U CN 201125354 Y CN201125354 Y CN 201125354Y
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- joist
- retaining
- retaining wall
- roadbed
- pile foundation
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- 238000010276 construction Methods 0.000 claims abstract description 39
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000004567 concrete Substances 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 239000011150 reinforced concrete Substances 0.000 claims description 4
- 230000005484 gravity Effects 0.000 claims description 2
- 238000009424 underpinning Methods 0.000 abstract 1
- 238000005452 bending Methods 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 239000011449 brick Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
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Abstract
The utility model discloses a support reinforce structure for steep slope subgrade, which comprises a pile foundation (10) anchored into a bearing stratum after through vertically a casing layer on a slope, a joist (20) connected rigidly with the top of the pile foundation (10), and a retaining wall (30) arranged on the joist (20). Prestressed anchor cables (40) are distributed on the joist (20) along the length direction in interval, the outer end of each prestressed anchor cable (40) is connected fixedly with the joist (20), and the inner end is connected fixedly with the bearing stratum after through the casing layer on the slope. The utility model can avoid efficiently slump damage of steep slope subgrade, has merits of good support effect, simple construction, low invest. The utility model is used for steep slope subgrage, especially for support and reinforce for steep slope high fill subgrade, comparing to the managing measures such as masonry shoulder retaining wall, pile-plank wall or common pile foundation underpinning retaining wall, can save about 20-30% invest.
Description
Technical field
The abrupt slope roadbed that the utility model relates in the engineerings such as being applied to railway, highway props up retaining ruggedized construction, and particularly a kind of abrupt slope high-fill roadbed props up retaining ruggedized construction.
Background technology
The abrupt slope roadbed is a kind of form common in railway, highway, especially mountain railway, the highway construction.Because lateral slope of ground is steeper, hypsography is bigger, and generally putting the slope, to fill mode technical no longer feasible, exist take up an area of more, even cover the river course, structure (building) is built thing, causes the possibility of roadbed integral body (or local) unstability slump.Particularly when the ground horizontal wall inscription steeper, when the depth of fill is big, directly puts the slope and fill very difficulty, be provided with a retaining ruggedized construction become inevitable, if but treatment measures are improper, will cause a significant threat to the stability and safety even the people's lives and property of engineering.At present, generally can handle the abrupt slope roadbed by structures such as toe barricade, stake board wall or pile foundation joist barricade are set.These treatment measures respectively have its applicability and pluses and minuses, but to the high embankment in abrupt slope, have mainly that engineering quantity is big, difficulty of construction is big, the high deficiency of cost.
The utility model content
Technical problem to be solved in the utility model provides a kind of abrupt slope roadbed and props up retaining ruggedized construction, and this retaining structure not only has effective, the characteristic of simple of constructing of a retaining, and can reduce construction costs effectively.
The technical scheme that its technical problem that solves the utility model adopts is: abrupt slope of the present utility model roadbed props up retaining ruggedized construction, comprise and vertically pass the pile foundation that anchors into bearing stratum on the side slope behind the overburden layer, with at pile foundation top joist rigidly connected with it, and be arranged on retaining wall on the joist, it is characterized in that: its length direction of described joist upper edge is laid with prestress anchorage cable at interval, fixedly connected with joist in the outer end of each prestress anchorage cable, its inner is then being passed on the side slope behind the overburden layer and the bearing stratum anchor connection.
After taking abovementioned technology, the common load of prestress anchorage cable and pile foundation can reduce the bending resistance design section and the designing pile length of pile foundation, except that reducing construction costs, compares with structure such as stake board wall, avoids setting up cripple, convenient construction.
As a kind of preferred version of the present utility model, for improving the force-bearing situation of pile foundation, improve its bending resistance and shear strength, described prestress anchorage cable is an anchor cable group with two, each anchor cable group all is laid on the joist at corresponding pile foundation top.
As further optimization to above-mentioned preferred version, for farthest bringing into play the usefulness of prestress anchorage cable, two prestress anchorage cables in the described anchor cable group are inclined relative to horizontal downwards, are outwards stretched to bearing stratum with respect to the width expansion of joist by joist.
The beneficial effects of the utility model are can prevent effectively that abrupt slope roadbed generation slump from destroying, and have effective, the characteristics simple, reduced investment of constructing of a retaining.Be applicable to the abrupt slope roadbed, particularly the abrupt slope high-fill roadbed props up the retaining reinforcing.The abrupt slope roadbed that is used for the abrupt slope high-fill roadbed props up retaining ruggedized construction, compares with treatment measures such as masonry curb barricade, stake board wall or general pile foundation joist barricades, can save investment about 20～30%.
Description of drawings
This manual comprises following three width of cloth accompanying drawings:
Fig. 1 is the schematic cross-sectional view that the utility model abrupt slope roadbed props up retaining ruggedized construction;
Fig. 2 is the front schematic view that the utility model abrupt slope roadbed props up retaining ruggedized construction;
Fig. 3 is that the utility model abrupt slope roadbed props up that the plan-position of pile foundation, joist and anchor cable concerns schematic diagram in the retaining ruggedized construction.
Member, position and pairing mark among the figure: pile foundation 10, joist 20, joist unit 21, joist unit 22, retaining wall 30, retaining wall unit 31, retaining wall unit 32, shrinkage joint 33, prestress anchorage cable 40.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
With reference to Fig. 1, abrupt slope of the present utility model roadbed props up retaining ruggedized construction, comprise and vertically pass the pile foundation 10 that anchors into bearing stratum (basement rock, hold the power soil layer) on the side slope behind the overburden layer and, and be arranged on retaining wall 30 on the joist 20 at pile foundation 10 tops joist 20 rigidly connected with it.With reference to Fig. 1 and Fig. 3, its length direction of described joist 20 upper edges is laid with prestress anchorage cable 40 at interval, fixedlys connected with joist 20 in the outer end of each prestress anchorage cable 40, and its inner is then being passed on the side slope behind the overburden layer and the bearing stratum anchor connection.Prestress anchorage cable 40 bears downslide thrust jointly with pile foundation 10, can reduce the design section and the designing pile length of pile foundation 10, except that reducing construction costs, avoids setting up cripple etc. simultaneously, convenient construction.
For improving the force-bearing situation of pile foundation 10, improve its bending resistance and shear strength, with reference to Fig. 3, described prestress anchorage cable 40 is an anchor cable group with two, each anchor cable group all is laid on the joist 20 at corresponding pile foundation 10 tops.For farthest bringing into play the usefulness of prestress anchorage cable 40, two prestress anchorage cables 40 in the described anchor cable group are inclined relative to horizontal downward extension (with reference to Fig. 1), are outwards stretched (with reference to Fig. 3) to bearing stratum with respect to the width expansion of joist 20 by joist 20.
Described prestress anchorage cable 40 adopts high strength, low relaxed prestress steel strand to be made usually, and its ultimate tensile strength should be greater than 1860Mpa.Described pile foundation 10 is made of the reinforced concrete pile, steel tube concrete pile or the steel case concrete pile that are provided with at interval.Described retaining wall 30 can adopt balance weight retaining wall or gravity retaining wall as the case may be.
For ease of construction, and the influence that reduces thermal stresses, concrete shrinkage and creep, adapt to the ground inhomogeneous deformation and satisfy construction requirement, with reference to Fig. 2, described joist 20 is the joist unit 21,22 that docks shape by at least two joints and constitutes, and each saves on the joist unit 21,22 and builds (or perfusion) corresponding retaining wall unit 31,32 respectively by laying bricks or stones.Each saves between joist unit 21,22, the retaining wall unit 31,32 has shrinkage joint 33, and the width at shrinkage joint 33 is generally 2cm.
Each joist unit 21,22 every joint length is generally 10～15m, and its below respectively is provided with stake more than two or two, and each pile spacing can adopt equidistantly or equidistant placement not, and its spacing is generally 5～7m.
Fig. 1 to Fig. 3 show with the utility model abrupt slope roadbed prop up the retaining ruggedized construction be applied in the embodiment that the high embankment in abrupt slope props up retaining.In this embodiment, pile foundation 10 is made of the reinforced concrete pile that is provided with at interval, adopts hand excavated pile, penetrates vertically that overburden layer anchors into basement rock on the toe, pile spacing 5m.Joist 20 is arranged on 10 tops of pile foundation, forms by the merogenesis cast-in-situ steel reinforced concrete, and the long 10m of joist unit 21,22 every joints, two piles that every joint joist unit 21,22 connects in the pile foundation 10, connected mode adopts and is rigidly connected.Retaining wall 30 adopts weight formula curb retaining walls, and each retaining wall unit 31,32 etc. is arranged at respectively on the corresponding joist unit 21,22 etc., and retaining wall 30 adopts the modes of building by laying bricks or stones or pouring into to construct usually.On every joint joist unit 21,22, four prestress anchorage cables 40 are set.Per two is an anchor cable group, and an end anchor is at joist 20 height 1/2 place respectively on position such as stake top such as the two ends of corresponding every joint joist unit 21,22 etc. for each anchor cable group prestress anchorage cable 40, and an end passes overburden layer and anchors in the basement rock by Fig. 1, angle shown in Figure 3.Prestress anchorage cable 40 adopts n Φ 15.2mm high strength, low relaxed prestress steel strand to be made, and its ultimate tensile strength is greater than 1860Mpa.Each saves between joist unit 21,22, the retaining wall unit 31,32 has shrinkage joint 33, and the width at shrinkage joint 33 is 2cm.Prestress anchorage cable 40 is arranged on the joist 20, and prestress anchorage cable 40 bears horizontal thrust jointly with pile foundation 10; Simultaneously, the horizontal thrust that balance weight retaining wall 30 bears embankment filled soil and train load behind the wall on the joist 20.
Site operation can carry out usually as follows:
(1) construction pile foundation 10, sequence of construction is: sloping body excavation, operation platform leveling, stake position setting-out, stake hole excavation, stake hole are checked, reinforcing cage is installed, is built pile concrete;
(2) construction joist 20, sequence of construction is: reinforcing bar binding, formwork erection, concreting, form removal maintenance.Reserve the anchor cable hole during construction joist 20;
(3) construction anchor cable 40, sequence of construction is: anchor cable pore-creating, cast anchor, install, grouting, stretch-draw and sealing off and covering anchorage;
(4) balance weight retaining wall 30 on the construction joist 20;
The above the utility model abrupt slope roadbed that just explains through diagrams props up some principles of retaining ruggedized construction, be not be the utility model abrupt slope roadbed to be propped up retaining ruggedized construction be confined to shown in and in described concrete structure and the scope of application, so every the corresponding modify and equivalent that might be utilized all belongs to the claim that the utility model is applied for.
Claims (7)
1. the abrupt slope roadbed props up retaining ruggedized construction, comprise and vertically pass the pile foundation (10) that anchors into bearing stratum on the side slope behind the overburden layer, with at pile foundation (10) top joist rigidly connected (20) with it, and be arranged on retaining wall (30) on the joist (20), it is characterized in that: its length direction of described joist (20) upper edge is laid with prestress anchorage cable (40) at interval, fixedly connected with joist (20) in the outer end of each prestress anchorage cable (40), its inner is then being passed on the side slope behind the overburden layer and the bearing stratum anchor connection.
2. abrupt slope as claimed in claim 1 roadbed props up retaining ruggedized construction, it is characterized in that: described prestress anchorage cable (40) is an anchor cable group with two, and each anchor cable group all is laid on the joist at corresponding pile foundation (10) top.
3. abrupt slope as claimed in claim 2 roadbed props up retaining ruggedized construction, it is characterized in that: two prestress anchorage cables (40) in the described anchor cable group are inclined relative to horizontal downward extension, are outwards stretched to bearing stratum with respect to the expansion of the width of joist (20) by joist (20).
4. prop up retaining ruggedized construction as claim 2 or 3 described abrupt slope roadbeds, it is characterized in that: the ultimate tensile strength of described prestress anchorage cable (40) is greater than 1860Mpa.
5. abrupt slope as claimed in claim 1 roadbed props up retaining ruggedized construction, it is characterized in that: described joist (20) is the joist unit (21,22) that docks shape by at least two joints and constitutes, each saves corresponding retaining wall unit (31,32) is set respectively on the joist unit (21,22), and each saves joist unit (21,22), the retaining wall unit has shrinkage joint (33) between (31,32).
6. abrupt slope as claimed in claim 1 roadbed props up retaining ruggedized construction, it is characterized in that: described pile foundation (10) is made of the reinforced concrete pile, steel tube concrete pile or the steel case concrete pile that are provided with at interval.
7. abrupt slope as claimed in claim 1 roadbed props up retaining ruggedized construction, it is characterized in that: described retaining wall (30) is balance weight retaining wall or gravity retaining wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200820877U CN201125354Y (en) | 2007-11-23 | 2007-11-23 | Steep hill road bed branch block reinforced structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200820877U CN201125354Y (en) | 2007-11-23 | 2007-11-23 | Steep hill road bed branch block reinforced structure |
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| CN201125354Y true CN201125354Y (en) | 2008-10-01 |
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| CNU2007200820877U Expired - Fee Related CN201125354Y (en) | 2007-11-23 | 2007-11-23 | Steep hill road bed branch block reinforced structure |
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Cited By (30)
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|---|---|---|---|---|
| CN101838998A (en) * | 2010-04-27 | 2010-09-22 | 中国科学院武汉岩土力学研究所 | Prestressed anchor cable pile sliding wall along river road shoulder and construction method thereof |
| CN101899837A (en) * | 2010-06-23 | 2010-12-01 | 武汉大学 | Concrete anti-shear active support structure for strengthening the deep slip surface of rock slope |
| CN102121252A (en) * | 2010-01-07 | 2011-07-13 | 贵阳铝镁设计研究院 | Method for constructing pile plate retaining wall |
| CN102352590A (en) * | 2011-07-27 | 2012-02-15 | 河南省交通规划勘察设计院有限责任公司 | Method for splicing highfill roadbed by adopting pile-sheet retaining wall |
| CN102352632A (en) * | 2011-07-29 | 2012-02-15 | 重庆大学 | Anchor rod sheet pile combined structure and method for reinforcing high filling body on one side of slope |
| CN102359046A (en) * | 2011-07-27 | 2012-02-22 | 河南省交通规划勘察设计院有限责任公司 | High fill subgrade connection method |
| CN102383353A (en) * | 2011-08-30 | 2012-03-21 | 中铁二院工程集团有限责任公司 | Combined structure for abrupt slope road bed of rapid transit railway |
| CN102425091A (en) * | 2011-09-09 | 2012-04-25 | 中铁二院工程集团有限责任公司 | Mountain area groove cutting roadbed drainage structure |
| CN102733354A (en) * | 2012-07-19 | 2012-10-17 | 陈洪凯 | Pile-wall combined anti-sliding support managing structure |
| CN102839686A (en) * | 2012-09-26 | 2012-12-26 | 中铁二院工程集团有限责任公司 | Stabilizing plate type anchor pile retaining structure |
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| CN103526662A (en) * | 2013-11-05 | 2014-01-22 | 中国铁建港航局集团有限公司 | Method for reinforcing firm soft foundation operating road |
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| CN108086352A (en) * | 2018-02-01 | 2018-05-29 | 云南新创新交通建设股份有限公司 | A kind of highway hard rock Steep Slope Embankment anchor rod foundation Anti-slide Pile Retaining Structure |
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| CN102121252A (en) * | 2010-01-07 | 2011-07-13 | 贵阳铝镁设计研究院 | Method for constructing pile plate retaining wall |
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| CN101838998A (en) * | 2010-04-27 | 2010-09-22 | 中国科学院武汉岩土力学研究所 | Prestressed anchor cable pile sliding wall along river road shoulder and construction method thereof |
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| CN115162379A (en) * | 2022-08-19 | 2022-10-11 | 中煤科工重庆设计研究院(集团)有限公司 | Construction process of mixed retaining structure |
| CN115788505A (en) * | 2022-11-11 | 2023-03-14 | 中铁二院工程集团有限责任公司 | Steep slope terrain tunnel entering construction method |
| CN116657623A (en) * | 2023-05-31 | 2023-08-29 | 中国十九冶集团有限公司 | Protective retaining structure of Yonglin combined with steep cliff bridge |
| CN117738233A (en) * | 2023-12-25 | 2024-03-22 | 中国电建集团成都勘测设计研究院有限公司 | Large-diameter steel pipe pile foundation joist steel plate road shoulder retaining wall and construction method thereof |
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