CN203977432U - Multistage H type soil blocking pile - Google Patents
Multistage H type soil blocking pile Download PDFInfo
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- CN203977432U CN203977432U CN201420307781.4U CN201420307781U CN203977432U CN 203977432 U CN203977432 U CN 203977432U CN 201420307781 U CN201420307781 U CN 201420307781U CN 203977432 U CN203977432 U CN 203977432U
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- perpendicular limb
- limb
- foundation ditch
- multistage
- circle
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Abstract
The utility model provides a kind of multistage H type soil blocking pile, comprises that some rows are arranged on the perpendicular limb in foundation ditch, and described perpendicular limb is steel column.The perpendicular limb of first row contacts with the internal face of foundation ditch.From the perpendicular limb of first row to the perpendicular limb of n row, it declines highly gradually.Described perpendicular limb is perpendicular to horizontal plane, and the bottom surface of foundation ditch is inserted in the lower end of described perpendicular limb.The part that described perpendicular limb inserts the bottom surface of foundation ditch is fixed section, and the part that described perpendicular limb exposes the bottom surface of foundation ditch is free segment.Concreting in the fixed section of described perpendicular limb.In the free segment of described perpendicular limb, fill sandy soil and/or gypsum.Between adjacent perpendicular limb, connect by crossbeam and/or lacing.
Description
Technical field
The utility model belongs to geotechnical engineering field, is specifically related to base pit engineering and interim slope project.
Background technology
Along with a large amount of high (superelevation) layer construction project is increasing both at home and abroad, base pit engineering quantity is on the increase, the excavation of foundation pit degree of depth is more and more darker, excavation area increases gradually, periphery place is more and more narrower, and be mostly distributed in the big and medium-sized cities that coastal engineering geological conditions is poor, building are intensive, the problem of appearance is also more and more, and the difficulty that construction is run into is also increasing.Because in deep pit digging Bracing Process, not only to ensure the stable of foundation ditch self, also must ensure to close on the safety and stablization of building facilities, so will consider safety, reasonability, the economy of whole engineering in foundation pit construction process, select most suitable support form.
At present; pattern foundation pit supporting structure form mainly contains: put slope excavation, draw anchor formula supporting and protection structure, soil nailed wall retaining structure, gravity shoring-structure, inner bearing type supporting and protection structure, soil blocking pile board wall etc.; its general principle is by connecting rod, stake or concrete wall, excavation slope load to be passed to the stable Rock And Soil at foundation ditch bottom or rear portion, and then guarantees that excavation slope is stable.Putting slope excavation needs larger horizontal range to slow down the gradient of excavation slope, until foundation ditch is stable, generally under the environment of urban land and anxiety thereof, is difficult to carry out.Draw the more supporting method of the outer application of anchor formula supporting and protection structure and soil nailed wall retaining structure Present Domestic, in foundation pit supporting project, occupy leading position, that its maximum advantage is to construct is simple and convenient, noise pollution is little, the duration is shorter, degree of safety is higher, cost is low, thereby the many shortcomings that made up conventional method, therefore receive the welcome of geotechnical engineering circle greatly.And that its weak point is applicable foundation depth is less, compared with passive protecting form distortion conventionally larger, foundation ditch periphery needs the larger space, slope of putting, and in the basement engineering of most cities, is difficult to meet the demands.Gravity shoring-structure is to rely on the frictional resistance of self body of wall and substrate to carry out the horizontal applied force of the soil body after resistance wall, can meet some foundation depths little, to the undemanding base pit engineering of deformation requirements, its shortcoming is in work progress, generally to need first after planning to build foundation ditch rear side to form interim slope, implementing gravity shoring-structure, may to cause interim slope failure unstability.Inner bearing type supporting and protection structure is to be arranged at foundation ditch inside, bear the structural system of the external loads such as the Water And Earth Pressures that enclosure wall transmits, by supporting, enclosing the members such as wiping (waist rail) and column and form, the backing material adopting at present mainly contains shaped steel, steel pipe and steel concrete etc., its layout form has groined type to add angle brace, the closed truss of circle (ellipse) reinforced concrete circle beam etc., the defect of such supporting and protection structure is design difficulty, deep layer foundation pit construction narrow space, difficulty of construction are large, and cost is higher.Soil blocking pile board wall is more of a specified duration service time, in design and construction, has all accumulated certain experience, and distortion is less conventionally, uses more in engineering.Stake in supporting and protection structure is main force structure, there is various ways, mainly contain: bored pile, precast rc slab stake or steel sheet pile, hand excavated pile etc., the cantilever segment of soil blocking pile is 8～15m side slope, and after soil-slope height exceedes 20m, soil blocking pile is just difficult to reach regulation effect.For easy construction, soil blocking pile generally adopts Uniform-section Piles, and therefore the economy of soil blocking pile is poor, and the longer economy of cantilever segment is poorer, and difficulty of construction is large, long in time limit simultaneously, cost is high, and its limitation becomes increasingly conspicuous.
Most of excavation slopes are temporary works, building structure reaches the lateral load that just can bear the peripheral soil body after ground elevation, foundation pit supporting construction has just completed its historic mission, but traditional supporting and protection structure adopts Reinforced Concrete Materials mostly, is difficult to recycle.Along with advancing of science and technology, various new materials, new technology, new method are applied increasing in engineering, people are also more and more higher to the requirement of pattern foundation pit supporting structure form, traditional support technology may not meet intensity or deformation requirements, also may spend very large cost even if sometimes meet the demands, therefore a kind of gear of research and development soil is highly large, and the foundation pit supporting construction of good economy performance, convenient and quick construction has become key technical problem urgently to be resolved hurrily in current foundation pit supporting project.
Summary of the invention
The purpose of this utility model is to solve the problem that existing foundation pit supporting construction easily caves in.
Be such for realizing the technical scheme that the utility model object adopts, a kind of multistage H type soil blocking pile, comprises that some circles are arranged on the perpendicular limb in foundation ditch, and the perpendicular limb of each circle is made up of some perpendicular limbs, and foundation ditch bottom is inserted in the lower end of the perpendicular limb of each root.The sidewall contact of the perpendicular limb of first lap and foundation ditch, from the perpendicular limb of first lap to the perpendicular limb of n circle, close to the central authorities of described foundation ditch gradually.From the perpendicular limb of first lap to the perpendicular limb of N circle, its height being exposed on foundation ditch bottom surface declines gradually.
Between adjacent perpendicular limb, connect by crossbeam and/or lacing.
Further, the part that perpendicular limb inserts the bottom surface of foundation ditch described in each root is fixed section, and the part that perpendicular limb exposes the bottom surface of foundation ditch described in each root is free segment.Be woven in concreting in the reinforcing cage of fixed section external surface of described perpendicular limb.Free segment external surface at described perpendicular limb is built sandy soil and/or gypsum.Make sandy soil and/or gypsum be attached to the free segment of described perpendicular limb.
Further, comprise that some length are respectively S1, S2 ... the perpendicular limb of Sn, wherein, n is more than or equal to 3 natural number, S1 > S2 > ... > Sn.The position of fixity external surface of described perpendicular limb has woven reinforcing cage.Length is S1, S2 ... the perpendicular limb of Sn is called as perpendicular limb Z1, perpendicular limb Z2 successively ... perpendicular limb Zn.Some described perpendicular limb Z1 form the perpendicular limb of described first lap, and some described perpendicular limb Z2 form the perpendicular limb of described the second circle ..., some described perpendicular limb Zn form the perpendicular limb of described n circle.
Further, described perpendicular limb is that cross section is steel column, i iron, steel pipe, box-type section steel, channel-section steel or the angle steel of H type.
Further, the angle of the perpendicular limb of each root and horizontal plane is α, 30 °≤α≤90 °.
Technique effect of the present utility model is mathematical.Technique scheme has reduced engineering cost and difficulty of construction, has shortened the duration, can realize the repeatedly utilization of supporting and protection structure material, and this structure is applicable to the interim slope support engineering except pattern foundation pit supporting structure simultaneously.
Brief description of the drawings
The multistage H type supporting and protection structure of Fig. 1 stereogram;
Fig. 2 sectional structure chart of the present utility model and force diagram;
Fig. 3 floor map of the present utility model;
Fig. 4 structural internal force schematic diagram of the present utility model;
The multistage H type soil blocking pile of Fig. 5 structure construction flow chart;
Fig. 6 is foundation ditch top.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described in further detail, only limits to following embodiment but should not be construed the above-mentioned subject area of the utility model.In the situation that not departing from the above-mentioned technological thought of the utility model, according to ordinary skill knowledge and customary means, make various replacements and change, all should be included in protection domain of the present utility model.
Embodiment 1:
A kind of multistage H type soil blocking pile, comprises that some circles are arranged on the perpendicular limb in foundation ditch, and the perpendicular limb of each circle is made up of some perpendicular limbs.Referring to Fig. 6, this figure is the top view of foundation ditch, surrounds three perpendicular limb circles by some perpendicular limbs.Foundation ditch bottom (basal plane) is inserted in the lower end of the perpendicular limb of each root.The sidewall contact of the perpendicular limb of first lap and foundation ditch, from the perpendicular limb of first lap to the perpendicular limb of N circle (Fig. 6, N=" three ", the perpendicular limb of N circle i.e. the perpendicular limb of the 3rd circle), close to the central authorities of described foundation ditch gradually.From elevation direction, from the perpendicular limb of first lap to the perpendicular limb of N circle, its height being exposed on foundation ditch bottom surface declines gradually.This just makes from facade, and the soil blocking pile being made up of the perpendicular limb of adjacent two row is H type, and the soil blocking pile being made up of the perpendicular limb of n row is multistage H type
Between adjacent perpendicular limb, connect by crossbeam and/or lacing.In embodiment, the mode connecting by welding or high-strength bolt, is connected crossbeam and/or lacing with perpendicular limb.What deserves to be explained is, crossbeam is divided in same circle that each perpendicular limb interconnects and each perpendicular limb of the circle that do not coexist interconnects.Crossbeam can adopt the mode such as high-strength bolt or welding and perpendicular limb to be rigidly connected.Crossbeam can be that cross section is steel, i iron, steel pipe, box-type section steel, channel-section steel or the angle steel of H type, can be also the steel with compound section or other shaped cross.Lacing is the oblique connection between perpendicular limb, adopts i iron, channel-section steel, steel pipe or angle steel more, the connection between the perpendicular limb of enhancing and the transmission of stress.
Preferably, described perpendicular limb anchoring section weaves reinforcing cage around, and described reinforcing cage is attached to the external surface of perpendicular limb anchoring section, to build attachment around described perpendicular limb anchoring section.Described in each root, to insert the part of the bottom surface of foundation ditch be fixed section to perpendicular limb, and the part that perpendicular limb exposes the bottom surface of foundation ditch described in each root is free segment.Be woven in concreting in the reinforcing cage of fixed section external surface of described perpendicular limb.Free segment at described perpendicular limb is filled sandy soil and/or gypsum.
Embodiment 2:
The primary structure of the present embodiment is with embodiment 1.Comprise that some length are respectively S1, S2 ... the perpendicular limb of Sn, wherein, n is more than or equal to 3 natural number, S1 > S2 > ... > Sn.The anchoring section external surface of described perpendicular limb has woven reinforcing cage.Length is S1, S2 ... the perpendicular limb of Sn is called as perpendicular limb Z1, perpendicular limb Z2 successively ... perpendicular limb Zn.Some described perpendicular limb Z1 form the perpendicular limb of described first lap, and some described perpendicular limb Z2 form the perpendicular limb of described the second circle ..., some described perpendicular limb Zn form the perpendicular limb of described N circle.
In order to make the horizontal force that single pile bears rationally be distributed to fixed section soil layer, prevent fixed section rock mass stress undue concentration, fixed section Rock And Soil is destroyed, as shown in Fig. 1 or Fig. 3, adopt in the plane quincunx or rectangular arrangement.
As shown in Figure 3, the interplanar spacing of stake should be definite according to the geological conditions of the stressing conditions of single pile and fixed section, and meet the requirement of pile foundation related specifications, and this layout has also increased the rigidity outside stake plane of constraint, increased the stability of structure.According to soil mechanics, the ground lateral pressure that retaining structure bears is Triangle-Profile or trapezoidal profile, and as shown in Figure 2, computational methods are in stressed signal:
E
a＝ah+0.5kh
2
By multistage H type soil blocking pile structural mechanics is solved, structural internal force as shown in Figure 4, this structure first row bending moment diagram curve is multistage parabola composition, moment luffing is less, second to be discharged to last row's bending moment diagram curve be multistage oblique line composition, moment luffing is also less, and traditional soil blocking pile structure moment of flexure becomes cube exponent increase with foundation depth, and the larger internal force of the degree of depth is larger; First row shear force diagram curve is multistage parabola composition, shear value luffing is less, and second to be discharged to last row's bending moment diagram curve be multistage vertical curve composition, and shear value luffing is also less, and traditional soil blocking pile structure moment of flexure becomes square exponent increase with the degree of depth, the larger internal force of the degree of depth is larger.Summary analysis is bright, the internal force distribution uniform of multistage H type soil blocking pile structure of the present utility model, and internal force value is far smaller than traditional soil blocking pile structure.Constructional materials is large at load, and the disadvantageous position distribution of structure stress is more, less in the position distribution that load is little, scientific and reasonable utilization constructional materials.
In embodiment, described perpendicular limb is that cross section is steel column, i iron, steel pipe, box-type section steel, channel-section steel or the angle steel of H type, can be also the steel column with compound section or other shaped cross.
Embodiment 3:
The primary structure of the present embodiment is with embodiment 1.Just N=" five ".Comprise that some length are respectively the perpendicular limb of S1, S2, S3, S4 and S5, wherein, S1=21 rice, S2=18 rice, S3=15 rice, S4=12 rice, S5=9 rice.The anchoring section external surface of described perpendicular limb has woven reinforcing cage.Length is that the perpendicular limb of S1, S2, S3, S4 and S5 is called as perpendicular limb Z1, perpendicular limb Z2, perpendicular limb Z3, perpendicular limb Z4, perpendicular limb Z5 successively.Some described perpendicular limb Z1 form the perpendicular limb of described first lap, some described perpendicular limb Z2 form the perpendicular limb of described the second circle, some described perpendicular limb Z3 form the perpendicular limb of described the 3rd circle, and some described perpendicular limb Z4 form the perpendicular limb of described the 4th circle, and some described perpendicular limb Z5 form the perpendicular limb of described the 5th circle.
In order to make the horizontal force that single pile bears rationally be distributed to fixed section soil layer, prevent fixed section rock mass stress undue concentration, fixed section Rock And Soil is destroyed, as shown in Fig. 1 or Fig. 3, adopt in the plane quincunx or rectangular arrangement.
As shown in Figure 3, the interplanar spacing of stake should be definite according to the geological conditions of the stressing conditions of single pile and fixed section, and meet the requirement of pile foundation related specifications, and this layout has also increased the rigidity outside stake plane of constraint, increased the stability of structure.According to soil mechanics, the ground lateral pressure that retaining structure bears is Triangle-Profile or trapezoidal profile, and as shown in Figure 2, computational methods are in stressed signal:
E
a＝ah+0.5kh
2
By multistage H type soil blocking pile structural mechanics is solved, structural internal force as shown in Figure 4, this structure first row bending moment diagram curve is multistage parabola composition, moment luffing is less, second to be discharged to last row's bending moment diagram curve be multistage oblique line composition, moment luffing is also less, and traditional soil blocking pile structure moment of flexure becomes cube exponent increase with foundation depth, and the larger internal force of the degree of depth is larger; First row shear force diagram curve is multistage parabola composition, shear value luffing is less, and second to be discharged to last row's bending moment diagram curve be multistage vertical curve composition, and shear value luffing is also less, and traditional soil blocking pile structure moment of flexure becomes square exponent increase with the degree of depth, the larger internal force of the degree of depth is larger.Summary analysis is bright, the internal force distribution uniform of multistage H type soil blocking pile structure of the present utility model, and internal force value is far smaller than traditional soil blocking pile structure.Constructional materials is large at load, and the disadvantageous position distribution of structure stress is more, less in the position distribution that load is little, scientific and reasonable utilization constructional materials.
In embodiment, described perpendicular limb is that cross section is steel column, i iron, steel pipe, box-type section steel, channel-section steel or the angle steel of H type, can be also the steel column with compound section or other shaped cross.
Embodiment 4:
The primary structure of the present embodiment is with embodiment 1.
Just, described perpendicular limb can be perpendicular to horizontal plane, can be also (horizontal by the certain angle) that tilt, the angle of the perpendicular limb of each root and horizontal plane is α, 0 ° of < α≤30 °, is preferably: 30 °≤α≤90 °.
In addition, in the present embodiment, the spacing of each perpendicular limb circle can be close to 0.Be that the perpendicular limb of each circle is adjacent.
In a kind of implementation, the perpendicular limb of first lap is perpendicular to horizontal plane, and the perpendicular limb of all the other each circles all tilts.
Claims (5)
1. a multistage H type soil blocking pile, is characterized in that: comprise that some circles are arranged on the perpendicular limb in foundation ditch, the perpendicular limb of each circle is made up of some perpendicular limbs, and foundation ditch bottom is inserted in the lower end of the perpendicular limb of each root; The sidewall contact of the perpendicular limb of first lap and foundation ditch, from the perpendicular limb of first lap to the perpendicular limb of N circle, close to the central authorities of described foundation ditch gradually; From the perpendicular limb of first lap to the perpendicular limb of N circle, its height being exposed on foundation ditch bottom surface declines gradually;
Between adjacent perpendicular limb, connect by crossbeam and/or lacing.
2. the multistage H type soil blocking pile of one according to claim 1, is characterized in that: described in each root, to insert the part of the bottom surface of foundation ditch be fixed section to perpendicular limb, and the part that perpendicular limb exposes the bottom surface of foundation ditch described in each root is free segment; Be woven in concreting in the reinforcing cage of fixed section external surface of described perpendicular limb; Build sandy soil and/or gypsum at the free segment of described perpendicular limb.
3. the multistage H type soil blocking pile of one according to claim 1, it is characterized in that: comprise that some length are respectively S1, S2 ... the perpendicular limb of Sn, wherein, n is more than or equal to 3 natural number, S1 > S2 > ... > Sn; The external surface of described perpendicular limb has woven reinforcing cage; Length is S1, S2 ... the perpendicular limb of Sn is called as perpendicular limb Z1, perpendicular limb Z2 successively ... perpendicular limb Zn; Some described perpendicular limb Z1 form the perpendicular limb of described first lap, and some described perpendicular limb Z2 form the perpendicular limb of described the second circle ..., some described perpendicular limb Zn form the perpendicular limb of described n circle.
4. the multistage H type soil blocking pile of one according to claim 1, is characterized in that: described perpendicular limb is that cross section is steel column, i iron, steel pipe, box-type section steel, channel-section steel or the angle steel of H type.
5. the multistage H type soil blocking pile of one according to claim 1, is characterized in that: the angle of the perpendicular limb of each root and horizontal plane is α, 30 °≤α≤90 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420307781.4U CN203977432U (en) | 2014-06-11 | 2014-06-11 | Multistage H type soil blocking pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420307781.4U CN203977432U (en) | 2014-06-11 | 2014-06-11 | Multistage H type soil blocking pile |
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| CN203977432U true CN203977432U (en) | 2014-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420307781.4U Withdrawn - After Issue CN203977432U (en) | 2014-06-11 | 2014-06-11 | Multistage H type soil blocking pile |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104164880A (en) * | 2014-06-11 | 2014-11-26 | 易朋莹 | Multi-stage h type retaining pile and construction method thereof |
| CN104762975A (en) * | 2015-02-10 | 2015-07-08 | 云南建工基础工程有限责任公司 | h-shaped double-row pile structure provided with core-entraining jet grouting pile |
| CN106677163A (en) * | 2016-11-14 | 2017-05-17 | 王立明 | Pipe hoop truss fender pile and auxiliary construction equipment thereof |
| CN109457725A (en) * | 2018-12-20 | 2019-03-12 | 西安航空学院 | A kind of H-type concrete slab assembled ecology retaining wall |
-
2014
- 2014-06-11 CN CN201420307781.4U patent/CN203977432U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104164880A (en) * | 2014-06-11 | 2014-11-26 | 易朋莹 | Multi-stage h type retaining pile and construction method thereof |
| CN104762975A (en) * | 2015-02-10 | 2015-07-08 | 云南建工基础工程有限责任公司 | h-shaped double-row pile structure provided with core-entraining jet grouting pile |
| CN104762975B (en) * | 2015-02-10 | 2016-05-25 | 云南建工基础工程有限责任公司 | A kind of H type Double-row-piles Structure that adds core rotary churning pile that is provided with |
| CN106677163A (en) * | 2016-11-14 | 2017-05-17 | 王立明 | Pipe hoop truss fender pile and auxiliary construction equipment thereof |
| CN106677163B (en) * | 2016-11-14 | 2019-11-08 | 王立明 | Pipe collar girder fender post and its attached construction equipment |
| CN109457725A (en) * | 2018-12-20 | 2019-03-12 | 西安航空学院 | A kind of H-type concrete slab assembled ecology retaining wall |
| CN109457725B (en) * | 2018-12-20 | 2023-10-24 | 西安航空学院 | H-shaped concrete plate assembled ecological retaining wall |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141203 Effective date of abandoning: 20160518 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |