CN102926389B - Grouped pile structure for preventing and treating landslide and construction method thereof - Google Patents

Grouped pile structure for preventing and treating landslide and construction method thereof Download PDF

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Publication number
CN102926389B
CN102926389B CN201210389876.0A CN201210389876A CN102926389B CN 102926389 B CN102926389 B CN 102926389B CN 201210389876 A CN201210389876 A CN 201210389876A CN 102926389 B CN102926389 B CN 102926389B
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main
antislide pile
piles
pile
antislide
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CN102926389A (en
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柴艳飞
王存贵
张云富
陆海英
黄克起
方杰
高璞
朱芳
其他发明人请求不公开姓名
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China Construction Sixth Engineering Division Co Ltd
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China Construction Sixth Engineering Division Co Ltd
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Abstract

The invention discloses a grouped pile structure for preventing and treating landslide and a construction method thereof. The grouped pile structure comprises main anti-slide piles and secondary anti-slide piles arranged among the main anti-slide piles; main top beams are poured and connected between every two anti-slide piles; secondary top beams are poured and connected between each secondary anti-slide pile and each of the two neighboring main anti-slide piles; the diameters at the middle parts of the main anti-slide piles are larger than the diameters of the upper parts and the lower parts of the main anti-slide piles; and stirrups at the middle parts of the main anti-slide piles and the secondary anti-slide piles are thickened. The construction method comprises the following steps of: determining the positions of the main anti-slide piles and the secondary anti-slide piles; excavating holes for the main anti-slide piles and the secondary anti-slide piles; respectively presetting steel reinforcement cages of the main anti-slide piles and the secondary anti-slide piles and respectively placing the steel reinforcement cages into corresponding holes, pouring concrete, and carrying out upper hole shrinkage treatment when the concrete is poured on the upper parts of the main anti-slide piles; and finally pouring the main top beams and the second top beams. According to the grouped pile structure and the method, under the premise that distances among piles are not decreased, the extrusion and the damage of earth among the piles can be prevented effectively, and meanwhile, the whole force resistant performance and the anti-slide capability of the anti-slide piles are intensified, and thus the engineering cost is saved.

Description

A kind of clump of piles structure and construction method thereof of preventing and treating landslide
Technical field
The present invention relates to the pile foundation structure in a kind of underground foundation structure, specifically, relate to a kind of clump of piles structure and construction method thereof of preventing and treating landslide, be applicable to building construction side slope, road slope and various natural side slope.
Background technology
Be subject to natural power as the impact of earthquake, heavy showers and because of factors such as the artificial excavation slope toes of actual requirement of engineering, can cause slope instability and come down.
The antislide pile on control landslide mainly adopts single large diameter reinforced concrete pile at present, this reinforced concrete pile diameter unanimous between the higher and lower levels, and antislide pile stake suffered stress in practical work process is broad in the middle, the little class parabolic distribution in top and bottom, both do not conform to and have caused the waste of part material.Because the pilespacing of current antislide pile is larger, though resistance to overturning can meet, the destruction of extruding of inter-pile soil happens occasionally, and reduce pilespacing, can greatly increase construction costs and construction period in addition.
Summary of the invention
What the present invention will solve is that antislide pile inter-pile soil is easily extruded the technical problem of destruction, a kind of clump of piles structure and construction method thereof of preventing and treating landslide is provided, can do not reduce pile spacing from prerequisite under, effectively avoid the destruction of extruding of inter-pile soil, thereby save engineering cost.
In order to solve the problems of the technologies described above, the present invention is achieved by following technical scheme:
Prevent and treat the clump of piles structure on landslide, comprise that at least one row is arranged at intervals at the main antislide pile of slope body, between adjacent two the described main antislide piles with row, build and be connected with main Guan Liang; On the body of slope, the described main antislide pile bottom of every row, be provided with the inferior antislide pile that diameter is less than described main antislide pile, described antislide pile be corresponding to the centre position between adjacent two described main antislide piles, between described antislide pile and adjacent two described main antislide piles, builds and be connected with time Guan Liang;
The diameter at described main antislide pile middle part is greater than the diameter of upper and lower, and described main antislide pile is provided with vertical muscle and stirrup, and the described stirrup at described main antislide pile middle part is encrypted; Described time antislide pile is provided with vertical muscle and stirrup, and the described stirrup at described antislide pile middle part is encrypted.
In the delta-shaped region that two described Guan Liang corresponding to described main Guan Liang and its underpart surround, be provided with greenbelt.
The minimum diameter of described main antislide pile is 1/2~2/3 of its maximum gauge.
The diameter of described antislide pile is 1/3 of described main antislide pile maximum gauge, and the length of described antislide pile is 1/3~1/2 of described main antislide pile length.
In described antislide pile, the diameter of vertical muscle is less than the diameter 4~6mm of vertical muscle in described main antislide pile, and in described antislide pile, the diameter of stirrup is less than the diameter 2~4mm of stirrup in described main antislide pile.
The described stirrup spacing that encrypt at described main antislide pile and described antislide pile middle part be described in other parts stirrup spacing 1/2.
The cross section length of side of described Guan Liang is 40%~60% of the described main hat beam section length of side.
A construction method of utilizing the clump of piles structure on above-mentioned control landslide, comprises the steps:
(1) accurately determine the position of main antislide pile, inferior antislide pile;
(2) artificial or rig carries out the borehole work of main antislide pile, the thickest equal diameters at top and middle part, and shrinkage cavity borehole is carried out in bottom;
(3) carry out the boring of time antislide pile;
(4) reinforcing cage of the prefabricated main antislide pile of difference and time antislide pile;
(5) by the reinforcing cage of the reinforcing cage of prefabricated main antislide pile and time antislide pile, put into respectively the main antislide pile having bored, the hole of inferior antislide pile, concreting; While being wherein poured into main antislide pile top, carry out top undergauge processing, with the steel sleeve identical with main antislide pile shaped upper part, the reinforcing cage of main antislide pile is entangled, side slope nature earthen backfill for gap between steel sleeve outside and hole wall, then proceed concreting, until complete the moulding of main antislide pile;
(6) build main Guan Liang and time Guan Liang, built rear main Guan Liang and carried out water seasoning with time Guan Liang top.
The invention has the beneficial effects as follows:
(1) main antislide pile of the present invention can be guaranteed the resistance to overturning on landslide, inferior antislide pile can avoid the coming down destruction of extruding of inter-pile soil, adopt primary and secondary anti-slide pile structure system, can guarantee under the stable prerequisite in landslide, effectively increase the spacing of main antislide pile, save engineering cost, avoid the soil body between main antislide pile to extrude destruction;
(2) the present invention is according to the stressed size of pile body and stressed rule, change conventional piles and descended the design scheme that diameter is identical with it, the thin pile body structure in thick both sides in the middle of adopting, the stressed rule that meets pile body, can resist relatively large external force, strengthen the drag performance of stake, can also greatly save construction costs;
(3) between main antislide pile of the present invention, by main Guan Liang, interconnect, by inferior Guan Liang, interconnect between main antislide pile and inferior antislide pile, be conducive to main antislide pile and time antislide pile and form whole stressed advantage, thereby strengthen the whole anti-slide performance of antislide pile;
(4) stirrup at main antislide pile of the present invention and time antislide pile middle part is encrypted, and can strengthen anti-shear ability and the bending resistance of antislide pile, prevents that antislide pile from destroying;
(5) the present invention adopts greenbelt can play beauty function.
Accompanying drawing explanation
Fig. 1 is the floor map of clump of piles structure provided by the present invention;
Fig. 2 is the structural representation of main antislide pile provided by the present invention;
Fig. 3 is the structural representation of provided by the present invention antislide pile.
In figure: 1, main antislide pile; 2, main Guan Liang; 3, inferior Guan Liang; 4, inferior antislide pile; 5, greenbelt; 6, stirrup; 7, vertical muscle.
The specific embodiment
For further understanding content of the present invention, feature and effect, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
As shown in Figure 1, the invention discloses a kind of clump of piles structure of preventing and treating landslide, by main antislide pile 1, inferior antislide pile 4, main hat beam 2, inferior hat beam 3 and greenbelt, formed.
Main antislide pile 1 arranges a row or multi-row according to landslide size and sliding force on the body of slope.As shown in Figure 2, in the middle of being shaped as of main antislide pile 1, thick both sides are thin, and thickness part can be rounding off or step-wise transition, and the diameter at main antislide pile 1 middle part is greater than the diameter of upper and lower, and its minimum diameter is its maximum gauge 1/2~2/3.
Main antislide pile 1 is provided with vertical muscle 7 and stirrup 6, and vertical muscle 7 is circumferentially evenly arranged along main antislide pile 1, and stirrup 6 is connected with vertical muscle 7 by crotch.Wherein, stirrup 6 spacing that are positioned at main antislide pile 1 middle part are less than stirrup 6 spacing of its upper and lower, and middle part stirrup 6 is encrypted; And stirrup 6 spacing that encrypt at middle part are other part stirrup 6 spacing half.
Inferior antislide pile 4 is arranged on the slope body of main antislide pile 1 bottom certain distance, and this distance is generally within the scope of 1~2m, and each antislide pile 4 is corresponding to the centre position between adjacent two main antislide piles 1.As shown in Figure 3, inferior antislide pile 4 is common cylindrical structural, its diameter and length are less than respectively diameter and the length of main antislide pile 1, and the diameter of inferior antislide pile 4 is 1/3 of main antislide pile 1 maximum gauge, and the length of inferior antislide pile 4 is 1/3~1/2 of main antislide pile 1 length.
Inferior antislide pile 4 is provided with vertical muscle 7 and stirrup 6, and vertical muscle 7 is circumferentially evenly arranged along time antislide pile 4, and stirrup 6 is connected with vertical muscle 7 by crotch.In inferior antislide pile 4, the diameter of vertical muscle is less than the diameter 4~6mm of vertical muscle in main antislide pile 1, and in inferior antislide pile 4, the diameter of stirrup is less than the diameter 2~4mm of stirrup in main antislide pile 1.Wherein, be positioned at stirrup 6 spacing that time stirrup 6 spacing at antislide pile 4 middle parts are less than its upper and lower, middle part stirrup 6 is encrypted; And stirrup 6 spacing that encrypt at middle part are other part stirrup 6 spacing half.
Between adjacent two main antislide piles 1 with row, build and be connected with main hat beam 2; Between each inferior antislide pile 4 and adjacent two main antislide piles 1, build respectively and be connected with time hat beam 3.Main hat beam 2 and time hat beam 3 form by concreting, can be plain concrete beams, can be also reinforced concrete beams.In the delta-shaped region that two hat beams 3 corresponding to each main hat beam 2 and its underpart surround, be provided with greenbelt, can play beauty function.
The clump of piles construction method on above-mentioned control landslide, its concrete steps are as follows:
With transit, accurately determine the position of main antislide pile 1, inferior antislide pile 4, accuracy need be controlled within the scope of 1mm.
Manually carry out the borehole work of main antislide pile 1, during beginning, the diameter at top and middle part is large equally, and with the thickest equal diameters at middle part, shrinkage cavity borehole is carried out in bottom.Main antislide pile 1 borehole mode is carried out undergauge processing after also can replacing with drill hole of drilling machine by manually digging hole again.
With slewing drilling machine, carry out the boring of time antislide pile 4.
The reinforcing cage of the prefabricated main antislide pile 1 of difference and time antislide pile 4.
By the reinforcing cage of prefabricated main antislide pile 1 and time antislide pile 4, put into respectively the main antislide pile 1 having bored, the hole of inferior antislide pile 4, concreting, concrete intensity is not less than C15.While being wherein poured into main antislide pile 1 top, top undergauge processing is carried out in application, specifically use the steel sleeve identical with main antislide pile 1 shaped upper part that the reinforcing cage of main antislide pile 1 is entangled, side slope nature earthen backfill for gap between steel sleeve outside and hole wall, then proceed concreting, until complete the moulding of main antislide pile 1.
Build main hat beam 2 and time hat beam 3, concrete strength is not less than C20, and after having built, on main hat beam 2 and time hat beam 3 upper caps, straw mat carries out water seasoning 7 days.
Although by reference to the accompanying drawings the preferred embodiments of the present invention are described above; but the present invention is not limited to the above-mentioned specific embodiment; the above-mentioned specific embodiment is only schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present invention; not departing from the scope situation that aim of the present invention and claim protect, can also make the concrete conversion of a lot of forms, within these all belong to protection scope of the present invention.

Claims (7)

1. a construction method of preventing and treating the clump of piles structure on landslide, is characterized in that,
The clump of piles structure on this control landslide comprises that at least one row is arranged at intervals at the main antislide pile of slope body, between adjacent two the described main antislide piles with row, builds and is connected with main Guan Liang; On the body of slope, the described main antislide pile bottom of every row, be provided with the inferior antislide pile that diameter is less than described main antislide pile, described antislide pile be corresponding to the centre position between adjacent two described main antislide piles, between described antislide pile and adjacent two described main antislide piles, builds and be connected with time Guan Liang;
The diameter at described main antislide pile middle part is greater than the diameter of upper and lower, and described main antislide pile is provided with vertical muscle and stirrup, and the described stirrup at described main antislide pile middle part is encrypted; Described time antislide pile is provided with vertical muscle and stirrup, and the described stirrup at described antislide pile middle part is encrypted;
This construction method comprises the steps:
(1) accurately determine the position of main antislide pile, inferior antislide pile;
(2) artificial or rig carries out the borehole work of main antislide pile, the thickest equal diameters at top and middle part, and shrinkage cavity borehole is carried out in bottom;
(3) carry out the boring of time antislide pile;
(4) reinforcing cage of the prefabricated main antislide pile of difference and time antislide pile;
(5) by the reinforcing cage of the reinforcing cage of prefabricated main antislide pile and time antislide pile, put into respectively the main antislide pile having bored, the hole of inferior antislide pile, concreting; While being wherein poured into main antislide pile top, carry out top undergauge processing, with the steel sleeve identical with main antislide pile shaped upper part, the reinforcing cage of main antislide pile is entangled, side slope nature earthen backfill for gap between steel sleeve outside and hole wall, then proceed concreting, until complete the moulding of main antislide pile;
(6) build main Guan Liang and time Guan Liang, built rear main Guan Liang and carried out water seasoning with time Guan Liang top.
2. a kind of construction method of preventing and treating the clump of piles structure on landslide according to claim 1, is characterized in that, in the delta-shaped region that two described Guan Liang corresponding to described main Guan Liang and its underpart surround, is provided with greenbelt.
3. a kind of construction method of preventing and treating the clump of piles structure on landslide according to claim 1, is characterized in that, the minimum diameter of described main antislide pile is its maximum gauge 1/2~2/3.
4. a kind of construction method of preventing and treating the clump of piles structure on landslide according to claim 1, is characterized in that, the diameter of described antislide pile is 1/3 of described main antislide pile maximum gauge, and the length of described antislide pile is 1/3~1/2 of described main antislide pile length.
5. a kind of construction method of preventing and treating the clump of piles structure on landslide according to claim 1, it is characterized in that, in described antislide pile, the diameter of vertical muscle is less than the diameter 4~6mm of vertical muscle in described main antislide pile, and in described antislide pile, the diameter of stirrup is less than the diameter 2~4mm of stirrup in described main antislide pile.
6. a kind of construction method of preventing and treating the clump of piles structure on landslide according to claim 1, is characterized in that, the described stirrup spacing that encrypt at described main antislide pile and described antislide pile middle part be described in other parts stirrup spacing 1/2.
7. a kind of construction method of preventing and treating the clump of piles structure on landslide according to claim 1, is characterized in that, the cross section length of side of described Guan Liang is 40%~60% of the described main hat beam section length of side.
CN201210389876.0A 2012-10-15 2012-10-15 Grouped pile structure for preventing and treating landslide and construction method thereof Active CN102926389B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103643686A (en) * 2013-12-19 2014-03-19 中南大学 Retaining structure of water-saturated landslide with gradual slope ratio and construction method
CN104404971B (en) * 2014-11-26 2016-05-18 重庆大学 A kind of Anti-sliding stopping structure and high cut slope reinforcement construction method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100473375B1 (en) * 2002-07-03 2005-03-10 (주)세일엔지니어링 Retaining wall using phc pile
CN202081419U (en) * 2011-05-26 2011-12-21 中国建筑第七工程局有限公司 Squeezed branch pile
CN202323969U (en) * 2011-11-25 2012-07-11 中冶集团武汉勘察研究院有限公司 Retaining structure of delta-shaped double-row antiskid piles
CN202323970U (en) * 2011-11-26 2012-07-11 山东大学 Combined reinforcement system for side slope
CN202881964U (en) * 2012-10-15 2013-04-17 中国建筑第六工程局有限公司 Pile structure capable of preventing and treating landslide

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100473375B1 (en) * 2002-07-03 2005-03-10 (주)세일엔지니어링 Retaining wall using phc pile
CN202081419U (en) * 2011-05-26 2011-12-21 中国建筑第七工程局有限公司 Squeezed branch pile
CN202323969U (en) * 2011-11-25 2012-07-11 中冶集团武汉勘察研究院有限公司 Retaining structure of delta-shaped double-row antiskid piles
CN202323970U (en) * 2011-11-26 2012-07-11 山东大学 Combined reinforcement system for side slope
CN202881964U (en) * 2012-10-15 2013-04-17 中国建筑第六工程局有限公司 Pile structure capable of preventing and treating landslide

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