CN107476292A - Without the double pile element stake top shutters of Guan Liang - Google Patents

Without the double pile element stake top shutters of Guan Liang Download PDF

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Publication number
CN107476292A
CN107476292A CN201710724526.8A CN201710724526A CN107476292A CN 107476292 A CN107476292 A CN 107476292A CN 201710724526 A CN201710724526 A CN 201710724526A CN 107476292 A CN107476292 A CN 107476292A
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CN
China
Prior art keywords
shield
double pile
baffle plate
guan liang
stake top
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Granted
Application number
CN201710724526.8A
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Chinese (zh)
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CN107476292B (en
Inventor
白福波
王洪兴
王丛菲
马忠吉
焦洋
杨秦川
李颖
冯孟莹
姜涛
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Harbin Institute Of Technology Architectural Design And Research Institute Co ltd
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Harbin Institute of Technology
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Publication of CN107476292A publication Critical patent/CN107476292A/en
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Classifications

    • 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
    • E02D5/24—Prefabricated piles
    • E02D5/30—Prefabricated piles made of concrete or reinforced concrete or made of steel and concrete
    • 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
    • E02D17/02—Foundation pits
    • E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2600/00—Miscellaneous
    • E02D2600/20—Miscellaneous comprising details of connection between elements
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2600/00—Miscellaneous
    • E02D2600/30—Miscellaneous comprising anchoring details

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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)
  • Foundations (AREA)

Abstract

Without the double pile element stake top shutters of Guan Liang, it is related to a kind of double pile element stake top shutters.The present invention solves the problems, such as that existing cast-in-situ steel reinforced concrete Guan Liang has cost height, long construction period that transmission of the anchor pole precompression into soil produces restriction effect and cast-in-situ steel reinforced concrete Guan Liang.The equal length of shield and baffle plate is set, both ends are alignd setting along its length for shield and baffle plate, shield is vertically arranged with baffle plate and is fixedly connected by being connected flitch, connection flitch is located at the corner connection inner side of shield and baffle plate, connect that the both ends length of flitch is small with the both ends length of shield, and the cross section of shield and baffle plate is in inverted L-shaped；A stake top shutter is overlapped between each double pile elements, shield level is overlapped on double pile element upper surfaces, and baffle plate is kept off in the side wall at the top of double pile elements vertically, and connection flitch both ends withstand on two gear stake top ends of double pile elements.The present invention is used for earth-retaining during subsurface construction and excavation.

Description

Without the double pile element stake top shutters of Guan Liang
Technical field
The present invention relates to one kind without the double pile element stake top shutters of Guan Liang, belong to technical field of civil engineering.
Background technology
When subsurface construction and excavation surpasses 5 meters of depths, foundation pit side-wall building enclosure can use press-in prestressed concrete pipe pile or Cast-in-situ bored pile.When using prestressed concrete pipe pile or cast-in-situ bored pile earth-retaining, because the stake top side wall soil body is by ground rain The influence of the factors such as water seepage scour, materials hauling, the stake top soil body easily cave in, depth of typically substantially caving at half meter or so, to Lower softening infiltration is then deeper, and the soil body and gear stake for making this scope depart from.At present, this part soil body of existing foundation ditch top is by stake top The cast-in-situ steel reinforced concrete Guan Liang set is blocked, and the spacing between adjacent two is 1.5~2D, and wherein D is the diameter of stake, People think that armored concrete campshed top must be provided with continuous Guan Liang always, and it can coordinate displacement at pile top, while the top of Guan Liang Protective action is played to the soil body with side in face.When applying precompression provided with anchor pole, the synergy of Guan Liang limits on the contrary to be hindered Precompression is passed in the soil body, the advantageous effect of anchor pole precompressed is failed.
That is, when provided with cast-in-situ steel reinforced concrete Guan Liang, because the sidewise restraint rigidity of beam is larger, and all Stake top connect together, cause transmission of the anchor pole precompression into soil to produce restriction effect so that the favourable work of anchor pole precompressed With failure, this is a unfavorable factor；Cast-in-situ steel reinforced concrete Guan Liang does not apply to foundation pit side-wall height fluctuating mutation, while cast-in-place steel The cost of reinforced concrete Guan Liang is higher, and construction period is longer.
To sum up, existing cast-in-situ steel reinforced concrete Guan Liang exist transmission of the anchor pole precompression into soil produce restriction effect with And the problem of cost of cast-in-situ steel reinforced concrete Guan Liang is high, long construction period.
The content of the invention
Transmission generation limit of the anchor pole precompression into soil be present to solve existing cast-in-situ steel reinforced concrete Guan Liang in the present invention The problem of making cost height, the long construction period of use and cast-in-situ steel reinforced concrete Guan Liang, and then provide a kind of without the double stakes of Guan Liang Unit stake top shutter.
The present invention adopts the technical scheme that to solve above-mentioned technical problem：
The present invention's includes shield 1, baffle plate 2 and connection flitch 3, shield 1 and gear without the double pile element stake top shutters of Guan Liang The equal length of plate 2 is set, and both ends are alignd setting along its length for shield 1 and baffle plate 2, and shield 1 is vertically arranged and led to baffle plate 2 Cross connection flitch 3 to be fixedly connected, connection flitch 3 is located at shield 1 and is connected inner side, the both ends length of connection flitch 3 with the corner of baffle plate 2 Small and shield 1 both ends length is spent, the cross section of shield 1 and baffle plate 2 is in inverted L-shaped；One is overlapped between each double pile elements Stake top shutter, the level of shield 1 are overlapped on double pile element upper surfaces, and baffle plate 2 is kept off in the side wall at the top of double pile elements vertically, Connection flitch 3 both ends are withstood between two gear stakes 6 of double pile elements；The cross section for connecting flitch 3 is square.
Further, shield 1 and baffle plate 2 are plank sheathing.
Further, the width of shield 1 setting equal with the diameter of double pile element stakes, the length of shield 1 is double pile elements Centre-to-centre spacing.
Further, the altitude range of baffle plate 2 is 300~600mm.
Further, the cross sectional dimensions for connecting flitch 3 is 35mm*35mm~60mm*60mm.
Further, the spacing that double pile elements two are kept off between stakes 6 is 3~4 times of stake diameter.
Further, the spacing that double pile elements two are kept off between stakes 6 is 3.5 times of stake diameter.
The beneficial effects of the invention are as follows：
The present invention is to cancel existing cast-in-situ steel reinforced concrete Guan Liang without the double pile element stake top shutters of Guan Liang, is changed Into shutter between the lateral stake of stake top inverted L-shaped being assembled into by plank sheathing, the segmentation spreader beam of independent double pile element structures can Closely against pile body, it is not necessary to which stake top Guan Liang is coordinated；
Shutter between the stake top connection lateral stake of inverted L-shaped of the present invention, eliminates cast-in-situ steel reinforced concrete Guan Liang to anchor pole precompressed The restriction effect that power is transmitted into soil, the present invention are advantageous to anchor pole precompression and transmitted into soil, can ensure that to block and go along with sb. to guard him foundation ditch side The wall stake top portion soil body caves in, and the independent double pile elements of no Guan Liang of the invention are applied to foundation pit side-wall height fluctuating mutation；Also simultaneously The advantages of with cost, shortening duration is saved；Cost reduces more than 50%, and the underground construction phase shortens 25%, and the present invention takes For cast-in-situ steel reinforced concrete Guan Liang, independent double pile element Static Pressure Prefabricated Pipe Piles are formed, overall assembling can be achieved.
Brief description of the drawings
Fig. 1 is the integral installation structural perspective without the double pile element stake top shutters of Guan Liang of the present invention；
Fig. 2 is the structural perspective without the double pile element stake top shutters of Guan Liang of the present invention；
Fig. 3 is the cross-sectional view without the double pile element stake top shutters of Guan Liang of the present invention.
In figure：
1. shield；2. baffle plate；3. connect flitch；4. prestressed anchor；5. spreader beam；6. keep off stake；
7. the soil body；8. bottom of foundation ditch absolute altitude；9. foundation ditch elevation of top
Embodiment
Embodiment one：As shown in Figures 1 to 3, present embodiment includes without the double pile element stake top shutters of Guan Liang Shield 1, baffle plate 2 and connection flitch 3, the equal length of shield 1 and baffle plate 2 are set, shield 1 and baffle plate 2 both ends along its length Alignment is set, and shield 1 is vertically arranged with baffle plate 2 and is fixedly connected by being connected flitch 3, and connection flitch 3 is located at shield 1 and baffle plate 2 corner connection inner side, connects that the both ends length of flitch 3 is small with the both ends length of shield 1, and the cross section of shield 1 and baffle plate 2 is in Inverted L-shaped；A stake top shutter is overlapped between each double pile elements, the level of shield 1 is overlapped on double pile element upper surfaces, gear Plate 2 is kept off in the side wall at the top of double pile elements vertically, and connection flitch 3 both ends are withstood between two gear stakes 6 of double pile elements；Connection The cross section of flitch 3 is square.
The length of shield 1 be equal to connection flitch 3 length plus gear stake 6 diameter, connect flitch 3 vertical centerline with The vertical centerline of shield 1, which overlaps, to be set.
Connection flitch 3 both ends, which are withstood between double pile elements, can limit between inverted L-shaped stake shutter along planar slip.
In use, multiple double pile elements form continuous single soil blocking pile successively.
Present invention eliminates existing stake top cast-in-situ steel reinforced concrete Guan Liang, forms the independent double pile elements of no Guan Liang.
Work progress of the present invention：The independent double pile elements of no Guan Liang of first constructing, after treating its construction, in independent double pile elements Shutter between the laying inverted L-shaped stake of top, shutter can live processing and fabricating in batch between stake.
Embodiment two：As shown in Figures 1 to 3, present embodiment shield 1 and baffle plate 2 are plank sheathing.So set Meter, save cost, easy for construction, shortening duration, achievable assembling.Other compositions and annexation and embodiment one It is identical.
Embodiment three：As shown in figure 1, the width of present embodiment shield 1 is equal with the diameter of double pile element stakes Set, the length of shield 1 is the centre-to-centre spacing of double pile elements.It is so designed that, it is possible to achieve batch prefabrication and assembly construction, instead of cast-in-place steel reinforced concrete Guan Liang, i.e. environment-friendly and green, cost is reduced again.Other compositions and annexation are identical with embodiment one or two.
Embodiment four：As shown in Figures 1 to 3, the altitude range of present embodiment baffle plate 2 is 300~600mm.Such as This design, it is possible to achieve batch prefabrication and assembly construction, instead of cast-in-place steel reinforced concrete Guan Liang, i.e. environment-friendly and green, reduce cost again.It is other composition and Annexation is identical with embodiment three.
Embodiment five：As shown in figure 3, present embodiment connection flitch 3 cross sectional dimensions for 35mm*35mm~ 60mm*60mm.It is so designed that, connection flitch 3 both ends, which are withstood between double pile elements, can limit between inverted L-shaped stake shutter along plane Sliding, and shield 1 can be by being connected the firm connection of flitch 3 with baffle plate.Other compositions and annexation and specific embodiment party Formula one, two or four are identical.
Embodiment six：As shown in figure 1, the spacing between the two gear stakes 6 of the double pile elements of present embodiment is straight for stake 3~4 times of footpath.It is so designed that, cost reduces by more than 50%, realizes assembling.Other compositions and annexation and specific implementation Mode five is identical.
Embodiment seven：As shown in figure 1, the spacing between the two gear stakes 6 of the double pile elements of present embodiment is straight for stake 3.5 times of footpath.It is so designed that, cost reduces by more than 50%, realizes assembling.Other compositions and annexation and specific embodiment party Formula six is identical.
Embodiment：
Independent double pile elements example can design as follows：
Soil layer is cohesive soil formula：
H=H0τ+ΔH1-ΔH3≥h (4)
In formula：
Δσ1：Soil body unit is vertically to compression increment；
Δσ3：Soil body unit horizontal is to compression increment；
ΔH1﹑ Δs H3：The upright depth increments of foundation pit side-wall；
H：The upright depth calculation value of foundation pit side-wall；
h：The live upright cutting depth of foundation pit side-wall.
C：Soil body internal cohesion；
Soil body internal friction angle；
γ：Soil layer natural density；
Design uses the double pile elements of precompression anchor pole, applies precompression as shown in Figure 1 to stake side,
Steel reinforced concrete stake footpath：0.4m, pilespacing：1.2m, anchor pole level interval 2.4m；Foundation ditch soil layer is that clay is plastic, triaxial machining Experiment provides：C=31.09KPa,γ=19KPa/m.The unlimited equal lotus of the additional distribution of foundation ditch top surface
According to the upright cutting depth h of live foundation ditch, by formula (4) correlation Δ H1Tentative calculation Δ σ3(average), pressed during stake behind is native (distribution is Δ H to stress increment P=26KPa1)。
By formula (1)：H0c=2 × 31.09/19 × tg52.71 °=4.30m
By formula (2)：△ H1=3/19 × tg252.71 ° × 26=7.08m
By formula (3)：△ H3=1/19 × tg237.29 ° × 20=0.61m
By formula (4)：H=4.30+7.08-0.61=11.38-0.61=10.77m
Stake is long to take 9.9m (side wall root meets the requirement of stability of slope resistant slide).Hole top slope depth 0.61m, then foundation ditch is live Digging depth is：H0=h+0.61=11.38m.
The anchor pole number of plies：10.77/3.3=3.26 (three layers of anchor pole are taken), from the hole bottom surface meter vertical spacing of anchor pole：1.5m 3.3m, 3.3m (vertical average headway：3.3m)；Lateral stress increment is obtained by actual distribution length conversion △ H1/H × P：
Npi=7.08/10.77 × 26 × 1.2 × 3.3=67.7KN
Anchor pole horizontal pull design load：2Npi=2 × 67.7=135KN
By model sketch 1, amplitude modulation moment of flexure (pure bending) is resolved to obtain by grade beam:M=21KN.m
Steel reinforced concrete stake arrangement of reinforcement：Transformed section 0.30m × 0.30m C25
Along circular section distribution bar HRB400 9Stirrup HPB300Also overall diameter 300PC pile tubes can be pressed into, Extracted after underground engineering completion.

Claims (7)

  1. It is 1. a kind of without the double pile element stake top shutters of Guan Liang, it is characterised in that：Double pile element stake top shutters include shield (1), baffle plate (2) and connection flitch (3), the equal length of shield (1) and baffle plate (2) are set, and shield (1) and baffle plate (2) are along length Spend the alignment of direction both ends to set, shield (1) is vertically arranged with baffle plate (2) and is fixedly connected by being connected flitch (3), connects flitch (3) inner side is connected with the corner of baffle plate (2) positioned at shield (1), the both ends length of connection flitch (3) is small with the both ends of shield (1) Length, the cross section of shield (1) and baffle plate (2) is in inverted L-shaped；A stake top shutter is overlapped between each double pile elements, is hidden Plate (1) level is overlapped on double pile element upper surfaces, and baffle plate (2) is kept off in the side wall at the top of double pile elements vertically, connects flitch (3) both ends are withstood between two gear stakes (6) of double pile elements；The cross section for connecting flitch (3) is square.
  2. 2. the double pile element stake top shutters of no Guan Liang according to claim 1, it is characterised in that：Shield (1) and baffle plate (2) It is plank sheathing.
  3. 3. the double pile element stake top shutters of no Guan Liang according to claim 1 or 2, it is characterised in that：The width of shield (1) Setting equal with the diameter of double pile element stakes, the length of shield (1) are the centre-to-centre spacing of double pile elements.
  4. 4. the double pile element stake top shutters of no Guan Liang according to claim 3, it is characterised in that：The height model of baffle plate (2) Enclose for 300~600mm.
  5. 5. according to claim 1,2 or 4 without the double pile element stake top shutters of Guan Liang, it is characterised in that：Connect flitch (3) Cross sectional dimensions be 35mm*35mm~60mm*60mm.
  6. 6. the double pile element stake top shutters of no Guan Liang according to claim 5, it is characterised in that：Double two gear stakes of pile element (6) spacing between is 3~4 times of stake diameter.
  7. 7. the double pile element stake top shutters of no Guan Liang according to claim 6, it is characterised in that：Double two gear stakes of pile element (6) spacing between is 3.5 times of stake diameter.
CN201710724526.8A 2017-06-16 2017-08-22 Without the double pile element stake top shutters of crown beam Active CN107476292B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710458619 2017-06-16
CN2017104586190 2017-06-16

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CN107476292A true CN107476292A (en) 2017-12-15
CN107476292B CN107476292B (en) 2019-04-09

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203129125U (en) * 2013-04-12 2013-08-14 罗敖 Pile and beam combined retaining structure
CN207079590U (en) * 2017-06-16 2018-03-09 广州市市政工程设计研究总院 A kind of hydraulic engineering foundation pit supporting construction

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203129125U (en) * 2013-04-12 2013-08-14 罗敖 Pile and beam combined retaining structure
CN207079590U (en) * 2017-06-16 2018-03-09 广州市市政工程设计研究总院 A kind of hydraulic engineering foundation pit supporting construction

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Address after: No. 73 Huanghe Road, Nangang District, Harbin City, Heilongjiang Province, 150000

Patentee after: Harbin Institute of Technology Architectural Design and Research Institute Co.,Ltd.

Address before: No. 73 Huanghe Road, Nangang District, Harbin City, Heilongjiang Province, 150000

Patentee before: BUILDING DESIGN Research Institute HARBIN INSTITUTE OF TECHNOLOGY