CN104264693B - A kind of steel case concrete anti-slide pile structure - Google Patents
A kind of steel case concrete anti-slide pile structure Download PDFInfo
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- CN104264693B CN104264693B CN201410492387.7A CN201410492387A CN104264693B CN 104264693 B CN104264693 B CN 104264693B CN 201410492387 A CN201410492387 A CN 201410492387A CN 104264693 B CN104264693 B CN 104264693B
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- concrete
- steel casing
- steel
- landslide
- dividing plate
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The present invention relates to a kind of anti-slide pile structure, particularly relate to one and be applicable to weak rock Earthquakes and speedily carry out rescue work the steel case concrete anti-slide pile structure of the Landslide formed in landslide reinforcement engineering, and railway, highway weak rock area heavy cut work progress.Its cross section is to be provided with dividing plate along longitudinal adapting position in polygonal steel casing；Steel casing is divided into two regions, fill concrete in one of them region by this dividing plate；Along being longitudinally laid with the combination of several ribbed stiffeners in another region.The steel case agent on crack resistance of concrete sliding pile of the present invention has the advantage that speed of application is fast, physical dimension is little, bearing capacity is high, anti-seismic performance is good, and for weak rock area, landslide control can reduce cost, remarkable in economical benefits, has broad application prospects.
Description
Technical field
The present invention relates to a kind of anti-slide pile structure, particularly relate to one and be applicable to weak rock Earthquakes and speedily carry out rescue work the steel case concrete anti-slide pile structure of the Landslide formed in landslide reinforcement engineering, and railway, highway weak rock area heavy cut work progress.
Background technology
The AsA-GSH cycle of friction pile is mainly by stablizing the anchorage effect of rock stratum and passive resisting force below Sliding Plane to balance landslide Thrust.Along with China enters Earthquake Activity Periods, the various Landslide Hazards that earthquake causes occur more and more frequent, and harnessing landslide becomes a engineering the most important.With other Anti-slide engineering, as long and short anchor arm, anchor pole etc. are compared, friction pile has the features such as slide ability is strong, applied widely, is particularly well-suited to administer the major landslip that sliding surface is deeper.Compared with long and short anchor arm, friction pile have more excavation volume little, to Landslide Stability and many outstanding advantages such as geological environment destructiveness is little, be difficult to deteriorate landslide state, can construct with multiple friction piles, construction safety is easy, the duration is short simultaneously, become a kind of main method during Landslide Hazards is administered.
When friction pile is used for the landslide in the deeper large-scale weak rock area of sliding surface, need overcome landslide sliding area, top in the soil body produce huge thrust, in addition to the bearing capacity, deformation requirements of friction pile to be ensured self, be also satisfied the requirement of strength of resistance to compression district soft rock.If employing reinforced concrete pile, generally requiring must be bigger by the Cross section Design of stake, and pile spacing is designed to less, and the consumption that so will result in friction pile concrete is too much.According to piling bar, then needing great deal of steel, construction costs is expensive.
Summary of the invention
The present invention is in order to overcome deficiency of the prior art, there is provided one to be not only suitable for weak rock Earthquakes to speedily carry out rescue work landslide reinforcement engineering, it is applicable to again the steel casing concrete anti-slide pile structure of the Landslide of railway, the construction formation of highway weak rock area heavy cut, reach good structure tension performance and anti-seismic performance, reduce concrete amount, the bearing capacity and stiffness of raising structure, and be easy to rapid construction, speedily carry out rescue work, a kind of steel case concrete anti-slide pile structure of low cost.
It is an object of the invention to realize by the following technical solutions:
A kind of steel case concrete anti-slide pile structure, its cross section is to be provided with dividing plate along longitudinal adapting position in polygonal steel casing；Steel casing is divided into two regions, fill concrete in one of them region by this dividing plate；Along being longitudinally laid with the combination of several ribbed stiffeners in another region.
Described ribbed stiffener combination is made up of two boards formula ribbed stiffener, and is that splayed is arranged from steel casing side to dividing plate side.
The present invention compared with prior art has a following advantageous effect:
1, the present invention takes full advantage of the good characteristic and both interactions in loading process that steel casing tensile strength is high, ductility is good and concrete crushing strength is high.On the one hand, outer layer steel casing energy operative constraint inner concrete, the duty of concrete material can be obviously improved so that it is under sidewise restraint, give full play to comprcssive strength.Meanwhile, utilize steel casing to resist pulling force, make use of the advantage that steel plasticity is high, intensity is big.On the other hand, outer layer steel casing is played good supporting role again by the existence of inner concrete, can improve the opposing flexural deformation of steel casing and the ability of flexing, thus ensure giving full play to of bi-material performance.
2, use steel casing to replace tendon, in order to resist tension on friction pile cross section, given full play to the tensile property of steel, friction pile sectional dimension can be reduced.Simultaneously, in order to prevent outer layer steel casing from because pressure is excessive, local buckling occurring, between steel casing and internal partition, it is not filled by concrete side the ribbed stiffener of distribution in splayed is set discontinuously along steel casing length, compared with the piling bar using homogenous material, steel casing agent on crack resistance of concrete sliding pile decreases rolled steel dosage, reduces construction costs.
3, in the compressive region in steel case agent on crack resistance of concrete sliding pile cross section, fill concrete between outer layer steel casing and internal partition, take full advantage of the feature that concrete crushing strength is high, and, owing to outer layer steel casing and internal partition serve confined effect to concrete, make concrete be in the good working state of three dimension stress, also utilize concrete filled that the supporting role of outer layer steel casing is enhanced the local stability of steel casing simultaneously.Compared with reinforced concrete anti-slide pile, improve the utilization rate of concrete, reduce concrete amount, enhance the bearing capacity of friction pile.
4, steel case agent on crack resistance of concrete sliding pile has preferable anti-seismic performance.Steel casing can be effective against the tension that the seismic force of all directions produces on friction pile cross section.Simultaneously, fill concrete in outer layer steel casing, steel casing has multidirectional effect of contraction to concrete, it is to avoid inner concrete occurs crack developing and broken, sliding, the phenomenon of peeling under seismic force reciprocating, greatly strengthen the shock resistance of friction pile.
5, invention builds concrete guard wall, the manual labour of a large amount of tendon of colligation in eliminating the construction of conventional steel bar concrete friction pile, outer layer steel welding box body and lift in place after, the template of casting concrete can be become, utilize concrete pumping technique casting concrete, the template eliminated in reinforced concrete anti-slide pile is constructed sets up operation, easy construction, quick.
Time below with regard to the softest, the hard rock mutual stratification in weak rock landslide, soft rock usually becomes the situation of weak sliding surface and illustrates.Such as: weak sliding surface buried depth is away from ground 10m, 30 ° of inclination angle, sliding surface length 40m.When using present invention form friction pile unlike the prior art, maximum displacement of pile head, the quantities of friction pile and construction costs are contrasted:
(1) when employing agent on crack resistance of concrete sliding pile is as the retaining structure on this landslide, the cross section of single stake is 3m × 3m, and pile length is 20m, and maximum displacement occurs in a top, its maximum displacement 20mm.Agent on crack resistance of concrete sliding pile quantities: concrete 180m3, reinforcing bar 2.85t, corresponding construction costs is 7.98 ten thousand yuan.
(2) when employing steel case agent on crack resistance of concrete sliding pile is as the retaining structure on this landslide, the cross section of single stake is 1.8m × 1.8m, a length of 20m of steel casing, steel casing top maximum displacement 12mm.Steel casing agent on crack resistance of concrete sliding pile quantities: concrete 32.40
m3, steel 12.89t, corresponding construction costs is 6.39 ten thousand yuan.
By above correction data, it can be seen that compared with traditional reinforced concrete anti-slide pile, steel case agent on crack resistance of concrete sliding pile has given full play to the feature that outer layer steel casing tensile strength is high and inner concrete comprcssive strength is high, enhance the bearing capacity of friction pile, reduce the sectional dimension of friction pile.Further, due to outer layer steel casing and internal partition, concrete is served confined effect so that concrete is in the good working state of three dimension stress, improves the utilization rate of concrete, reduces concrete amount, and then reduces construction costs.Meanwhile, steel case agent on crack resistance of concrete sliding pile has the advantage that lateral rigidity is big, and under identical loading condition, its top side is moved less.
Accompanying drawing explanation
Fig. 1 is the perspective view of the present invention a kind of steel case concrete anti-slide pile structure；
Fig. 2 is the Section A-A schematic diagram of Fig. 1 of the present invention.
In figure: steel casing 1, concrete 2, dividing plate 3, ribbed stiffener combination 4.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in further detail; but protection scope of the present invention is not limited by specific embodiment institute; it is as the criterion with claims; additionally; with on the premise of technical solution of the present invention, any change or change that the those of ordinary skill in the art being made the present invention easily realize can fall within the scope of the claims of the present invention.
Embodiment 1
One steel case concrete anti-slide pile structure of the present invention as shown in Figure 1, 2, its cross section is that the interior adapting position along longitudinal direction of steel casing 1 of tetragon is welded with dividing plate 3, and dividing plate 3 length is identical with steel casing 1；Steel casing 1 is divided into two regions, fill concrete 2 in one of them region by this dividing plate 3；Along longitudinally having interval and several ribbed stiffeners of uniform welding combination 4 in another region.Described ribbed stiffener combination 4 is made up of two boards formula ribbed stiffener, and is that splayed is arranged to dividing plate 3 side from steel casing 1 side.
Embodiment 2
One steel case concrete anti-slide pile structure of the present invention as shown in Figure 1, 2, is welded with dividing plate 3, the other the same as in Example 1 along longitudinal adapting position in the steel casing 1 that its cross section is trapezoidal.
Embodiment 3
One steel case concrete anti-slide pile structure of the present invention as shown in Figure 1, 2, is welded with dividing plate 3, the other the same as in Example 1 along longitudinal adapting position in the steel casing 1 of its cross section parallelogram.
When specifically applying:
As shown in Figure 1, 2, first weld three side steel plates of outer layer steel case 1, between the steel plate of two sides, then weld internal partition 3, and on internal partition 3, weld two pieces of ribbed stiffener combinations 4 of distribution in splayed, finally weld the last side steel plate of outer layer steel casing 1.When friction pile length exceedes crane sling height or lifting tonnage, need steel casing segmental machining according to above-mentioned preparation process, and segmental hoisting, after the steel casing lifting for preparing until the preceding paragraph is in place, being fixed at stake mouth, the steel casing that next section in place with new lifting prepares is welded to connect.After the steel casing got ready when whole division systems has connected, casting concrete layer 2 between dividing plate and steel casing, i.e. form steel case concrete anti-slide pile structure after treating concrete layer solidification.
The steel case agent on crack resistance of concrete sliding pile of the present invention has the advantage that speed of application is fast, physical dimension is little, bearing capacity is high, anti-seismic performance is good, and for weak rock area, landslide control can reduce cost, remarkable in economical benefits, has broad application prospects.
Claims (2)
1. a steel casing concrete anti-slide pile structure, it is characterised in that: cross section is that polygonal steel casing (1) is interior is provided with dividing plate (3) along longitudinal adapting position；Steel casing (1) is divided into two regions by this dividing plate (3), and in one of them region fill concrete (2)；Along being longitudinally laid with several ribbed stiffeners combination (4) in another region.
A kind of steel casing concrete anti-slide pile structure the most according to claim 1, it is characterised in that: described ribbed stiffener combination (4) is made up of two boards formula ribbed stiffener, and is that splayed is arranged to dividing plate (3) side from steel casing (1) side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410492387.7A CN104264693B (en) | 2014-09-24 | 2014-09-24 | A kind of steel case concrete anti-slide pile structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410492387.7A CN104264693B (en) | 2014-09-24 | 2014-09-24 | A kind of steel case concrete anti-slide pile structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104264693A CN104264693A (en) | 2015-01-07 |
| CN104264693B true CN104264693B (en) | 2016-10-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410492387.7A Expired - Fee Related CN104264693B (en) | 2014-09-24 | 2014-09-24 | A kind of steel case concrete anti-slide pile structure |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2306536A (en) * | 1995-10-25 | 1997-05-07 | Sunlink Ltd | Steel piles |
| CN100371534C (en) * | 2005-11-16 | 2008-02-27 | 南京工业大学 | Technique for constructing pre-biased support and support pile |
| CN100595391C (en) * | 2008-07-25 | 2010-03-24 | 孔清华 | Synchronous soil lifting grouting rectangular filling pile apparatus and method |
| CN201554021U (en) * | 2009-10-29 | 2010-08-18 | 杭州萧宏建设集团有限公司 | Switching device for pouring equipment of concrete bored pile |
| CN204151799U (en) * | 2014-09-24 | 2015-02-11 | 沈阳建筑大学 | A kind of steel casing concrete anti-slide pile structure |
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2014
- 2014-09-24 CN CN201410492387.7A patent/CN104264693B/en not_active Expired - Fee Related
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| CN104264693A (en) | 2015-01-07 |
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