CN107938683A - One kind tilts pile pit supporting construction and its construction method - Google Patents

One kind tilts pile pit supporting construction and its construction method Download PDF

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Publication number
CN107938683A
CN107938683A CN201810031179.5A CN201810031179A CN107938683A CN 107938683 A CN107938683 A CN 107938683A CN 201810031179 A CN201810031179 A CN 201810031179A CN 107938683 A CN107938683 A CN 107938683A
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CN
China
Prior art keywords
construction
foundation pit
stake
fender post
support stake
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810031179.5A
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Chinese (zh)
Inventor
胡宝山
王建军
刘长伟
耿良才
王双
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Zhiping Foundation Engineering Co Ltd
Original Assignee
Shanghai Zhiping Foundation Engineering Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai Zhiping Foundation Engineering Co Ltd filed Critical Shanghai Zhiping Foundation Engineering Co Ltd
Priority to CN201810031179.5A priority Critical patent/CN107938683A/en
Publication of CN107938683A publication Critical patent/CN107938683A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00Excavations; Bordering of excavations; Making embankments
    • E02D17/02Foundation pits
    • E02D17/04Bordering surfacing or stiffening the sides of foundation pits

Abstract

The invention discloses one kind to tilt pile pit supporting construction and its construction method, its main feature is that the support stake that the pattern foundation pit supporting structure is set by oblique foundation pit is formed with the fender post outside foundation pit, the support stake is with the soil body of 10~20 ° of oblique bottom of foundation ditch of angle, and the angularly disposed fender post outside hole in one end, and the Guan Liang with being arranged at the top of fender post is connected, side slope on the outside of the foundation pit is reinforced using spray concrete, and Specific construction includes:Drilling machine pore-forming, support stake and the construction of fender post and Guan Liang are set.The present invention has in foundation pit without any support and anchor cable compared with prior art, excavated for pit earthwork and basement structure construction provides good working space, project cost is reduced while improving construction efficiency, it is simple in structure, supporting effect is good, is particularly suitable for the foundation pit supporting project construction that surrounding enviroment are complicated, existing building is more and excavating sideline is nearer apart from red line.

Description

One kind tilts pile pit supporting construction and its construction method
Technical field
It is especially a kind of to tilt pile pit supporting construction and its construction method the present invention relates to foundation pit enclosure technical field.
Background technology
At present, for the larger foundation pit of cutting depth generally all using inner support supporting construction, anchored pile supporting or oblique Piling wall supporting construction etc., wherein in the majority with inner support supporting construction.Inner support is by horizontal supporting beam and vertical support post Composition, its main arrangement form have annular, grid, to support or angle brace etc., and inner support supporting construction is due to there is a large amount of stand in foundation pit Column and horizontal shore, influence earth excavation, and the work efficiency of digging machine is low, so that foundation pit usage time and total lever factor are extended, and Easy column or supporting beam cause to damage in digging process, when influencing the security of foundation pit, especially basement main body construction, stand Column passes through tanking, influences the waterproof effect of bottom plate.The anchorage cable anchoring of anchored pile supporting in the soil body outside foundation pit, The anchor cable being locked in building enclosure is generally more than 30m, and total length is respectively positioned in the soil body and easily surmounts electricity consumption red line.Taper pile wall branch Protection structure is made of taper pile wall and Guan Liang and vertical supporting stake, and outside its taper pile tendency foundation pit, the soil pressure of its back part is by oblique Piling wall passes to vertical supporting stake with Guan Liang, and the raked pile lower part soil body needs to dig out, and construction space is narrow and small.
The deep foundation pit supporting structure of the prior art needs to set substantial amounts of supporting structure in foundation pit, makes the space in foundation pit Largely being taken, working space is small, influences the earth excavation of digging machine, and work efficiency rate is low, easily touches taper pile wall, influences deep pit monitor, And the anchor cable of anchored pile supporting is generally more than 30m, all stretches out electricity consumption red line substantially and can not use, taper pile wall supporting construction The raked pile lower part soil body need to dig out, construction space is narrow and small.
The content of the invention
The purpose of the present invention is in view of the deficiencies of the prior art and that designs a kind of tilt pile pit supporting construction and its apply Work method, the inclination pilework of excavation slope is reinforced using spray concrete, and towards outside foundation pit at the top of raked pile, bottom is oblique to enter base In the soil body for cheating bottom, fender post is vertically arranged at the lower section at the top of raked pile, is connected at the top of fender post by Guan Liang with raked pile, Fender post is arranged in the outer soil body of foundation pit, and the pressure of the horizontal direction of the foundation pit periphery soil body is passed through the Guan Liang transmission on fender post To the inclined shore stake of insertion bottom of foundation ditch, foundation pit is interior without any support and anchor cable, for pit earthwork excavation and basement structure Construction provides good working space, reduces project cost while construction efficiency is improved, simple in structure, supporting effect It is good, it is particularly suitable for the foundation pit supporting project that surrounding enviroment are complicated, existing building is more and excavating sideline is nearer apart from red line Construction.
The object of the present invention is achieved like this:One kind tilt pile pit supporting construction, including fender post, support stake and Foundation pit, its main feature is that the support stake that the pattern foundation pit supporting structure is set by oblique foundation pit is formed with the fender post outside foundation pit, the support stake With in the soil body of 10~20 ° of oblique bottom of foundation ditch of angle, and the angularly disposed fender post outside hole in one end, and gone along with sb. to guard him with being arranged on The Guan Liang in stake top portion connects, and the side slope on the outside of the foundation pit is reinforced using spray concrete;The Guan Liang is provided with cheating the rib of interior setting Platform is connected with support stake.
The support stake is reinforced concrete pile, and its spacing is 5~7m.
The fender post is reinforced concrete pile.
A kind of construction method for tilting pile pit supporting construction, its main feature is that outside the support stake set using oblique foundation pit and foundation pit Fender post composition foundation pit supporting construction, support stake is with the soil body of 10~20 ° of oblique bottom of foundation ditch of angle, and one end is oblique The fender post and the Guan Liang at top being arranged on outside foundation pit connect, and Specific construction comprises the following steps:
A, the construction of stake is supported
Vibration long-spiral drilling machine is arranged on stake position and adjusts angle of inclination, carried out on natural ground support stake with 10~ The construction of the oblique bottom of foundation ditch soil body of 20 ° of angles, stake holes is cleared up after drilling machine pore-forming, and decentralization steel reinforcement cage is simultaneously supported the coagulation of stake Soil pours.
B, the construction of fender post
It will vibrate after long-spiral drilling machine is arranged on stake position and the construction of fender post carried out on natural ground, stake is cleared up after drilling machine pore-forming Hole, then transfers steel reinforcement cage and carries out the concreting of fender post.
C, the setting of Guan Liang
Stake to be supported and fender post maintenance reach design strength, set Guan Liang to be connected with support stake at the top of fender post integral Structure, the terrace with edge that the Guan Liang is provided with cheating interior setting are connected with support stake.
D, soil excavation in hole
The overall hole bottom for being excavated to designed elevation is carried out in foundation pit, using spray concrete to the side slope on the outside of foundation pit while soil excavation Reinforced.
The present invention has excavation space big compared with prior art, is pit earthwork without any support and anchor cable in foundation pit Excavate and basement structure construction provides good working space, project cost, structure are reduced while improving construction efficiency Simply, supporting effect is good, is particularly suitable for surrounding enviroment complexity, existing building more and excavating sideline is nearer apart from red line Foundation pit supporting project is constructed.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention;
Fig. 2 is Fig. 1 top views;
Fig. 3 specifically uses schematic diagram for the present invention.
Embodiment
Refering to 1~Fig. 2 of attached drawing, the present invention support stake 2 set by oblique foundation pit 5 and the fender post 1 being arranged on outside foundation pit 5 Composition, the support stake 2 is with the soil body of oblique 5 bottom of foundation pit of 10~20 ° of angles, and one end is angularly disposed outside foundation pit 5 Fender post 1 is simultaneously connected with the Guan Liang 3 at the top of fender post 1, and the side slope 4 in the outside of foundation pit 5 is reinforced using spray concrete;The Guan Liang 3 The terrace with edge 7 for being provided with cheating interior setting is connected with support stake 2;The support stake 2 is reinforced concrete pile, and its spacing is 5~7m.
It is described in further detail and illustrates with construction of the embodiment of a certain foundation pit enclosure to the present invention below:
Embodiment 1
Refering to attached drawing 3, the present invention includes support stake 2, fender post 1 and Guan Liang 3, the support stake 2 to be obliquely installed, its top with Fender post 1 is attached by Guan Liang 3, and the bottom angled of support stake 2 enters in the soil body of 5 bottom of foundation pit, and fender post 1 is vertically arranged In the soil body outside the foundation pit 5 below 2 top of support stake, Specific construction comprises the following steps:
A, the construction of stake is supported on natural ground
Vibration long-spiral drilling machine is arranged on stake position and adjusts angle of inclination, is filled on natural ground 7 using vibration long spire The support stake 2 of stake construction technology is noted, determines that the angle of inclination of support stake 2 is 15 °, its a length of 20m according to soil property and foundation depth, Stake spacing is 6.6m, supports the stake holes of stake 2 oblique in the soil body of 5 bottom of foundation pit with 15 ° of inclination angles, stake holes is cleared up after drilling machine pore-forming And steel reinforcement cage is transferred, the sectional reinforcement of support stake 2 is the worm steel of 12 a diameter of 25, is then supported the mixed of stake 2 Solidifying soil pours.
B, the construction of fender post
The fender post 1 that stake 2 to be supported is constructed vertical after conserving, stake position is arranged on by vibration long-spiral drilling machine, at 2 top of support stake Vertical fender post 1 is carried out in the 5 outer soil body of foundation pit of lower section to construct, stake holes is cleared up after drilling machine pore-forming, then transfers steel reinforcement cage simultaneously The concreting of fender post 1 is carried out, which passes to the load of the 5 outside soil body of foundation pit the support stake being obliquely installed 2, support stake 2 passes to 5 side load of foundation pit in the soil body of 5 bottom of foundation pit.
C, the setting of Guan Liang
Stake 2 to be supported and the maintenance of fender post 1 reach design strength, are set at the natural ground 7 at support stake 2 with the top of fender post 1 Put Guan Liang 3, Guan Liang 3 will support stake 2 and fender post 1 to connect into overall structure, the size of 3 elongated setting of Guan Liang for 1000 × 800mm, the terrace with edge 7 that Guan Liang 3 is provided with the inner side of foundation pit 5 are connected with support stake 2, and the size of terrace with edge 7 is 2200 × 1000 × 800mm, Guan Liang 3 are generally flushed with natural ground 7, stake 2 and fender post 1 will be supported to connect into overall structure by Guan Liang 3, can be with The soil pressure suffered by fender post 1 is transmitted well to be transferred in the soil body at hole bottom along 2 direction of inclined support stake.
D, soil excavation in hole
Treat that the support stake 2 of the connection of Guan Liang 3 and the overall structure maintenance of fender post 1 reach design strength, then carried out in foundation pit 5 The entirety of the soil body is excavated to the hole bottom of designed elevation, and the side slope 4 in the outside of foundation pit 5 is carried out using spray concrete while soil excavation Reinforce, finally carry out basement main body construction.
The present invention only sets fender post 1 and inclined support stake 2 in the outside of foundation pit 5, by the level of the 5 periphery soil body of foundation pit Directional pressure passes to 5 bottom of foundation pit by the Guan Liang 3 on fender post 1 and support stake 2.The side slope 4 of foundation pit 5 is added using spray concrete Gu so that foundation pit supporting construction is more reliable and more stable, and support stake 2 is inserted into foundation pit 5 and hole bottom above section is not less than excavation side Line 6, therefore in foundation pit 5 good operation sky is provided for the earth excavation and basement structure construction of foundation pit 5 without support and anchor cable Between.
Simply the present invention is further illustrated above, and is not used to limitation this patent, and all is equivalence enforcement of the present invention, It is intended to be limited solely by within the right of this patent.

Claims (4)

1. one kind tilts pile pit supporting construction, including fender post, support stake and foundation pit, it is characterised in that the pattern foundation pit supporting structure knot The support stake that structure is set by oblique foundation pit is formed with the fender post outside foundation pit, and the support stake is with 10~20 ° of oblique foundation pits of angle In the soil body of bottom, and the angularly disposed fender post outside hole in one end, and the Guan Liang with being arranged at the top of fender post is connected, it is described Side slope on the outside of foundation pit is reinforced using spray concrete;The terrace with edge that the Guan Liang is provided with cheating interior setting is connected with support stake.
2. pile pit supporting construction is tilted according to claim 1, it is characterised in that the support stake is reinforced concrete pile, Its spacing is 5~7m.
3. pile pit supporting construction is tilted according to claim 1, it is characterised in that the fender post is reinforced concrete pile.
4. the construction method of pile pit supporting construction is tilted described in a kind of claim 1, it is characterised in that set using oblique foundation pit The support stake put and the foundation pit supporting construction of the fender post composition outside foundation pit, support stake is with 10~20 ° of oblique bottom of foundation ditch of angle The soil body in, and the fender post and the Guan Liang at top that are set on the outside of the oblique foundation pit in one end connect, and Specific construction comprises the following steps:
A, the construction of stake is supported
Vibration long-spiral drilling machine is arranged on stake position and adjusts angle of inclination, support stake is carried out on natural ground with 10 Construction in the oblique bottom of foundation ditch soil body of~20 ° of angles, stake holes is cleared up after drilling machine pore-forming, and decentralization steel reinforcement cage is simultaneously supported stake Concreting;
B, the construction of fender post
It will vibrate after long-spiral drilling machine is arranged on stake position and the construction of fender post carried out on natural ground, stake is cleared up after drilling machine pore-forming Hole, then transfers steel reinforcement cage and carries out the concreting of fender post;
C, the setting of Guan Liang
Stake to be supported and fender post maintenance reach design strength, set Guan Liang to be connected with support stake at the top of fender post integral Structure, the terrace with edge that the Guan Liang is provided with cheating interior setting are connected with support stake;
D, soil excavation in hole
The overall hole bottom for being excavated to designed elevation is carried out in foundation pit, using spray concrete to the side slope on the outside of foundation pit while soil excavation Reinforced.
CN201810031179.5A 2018-01-12 2018-01-12 One kind tilts pile pit supporting construction and its construction method Pending CN107938683A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810031179.5A CN107938683A (en) 2018-01-12 2018-01-12 One kind tilts pile pit supporting construction and its construction method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810031179.5A CN107938683A (en) 2018-01-12 2018-01-12 One kind tilts pile pit supporting construction and its construction method

Publications (1)

Publication Number Publication Date
CN107938683A true CN107938683A (en) 2018-04-20

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Application Number Title Priority Date Filing Date
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108625377A (en) * 2018-06-11 2018-10-09 云南建投基础工程有限责任公司 A kind of foundation pit diagonal brace pile construction method and its auxiliary tool
CN109537418A (en) * 2018-12-10 2019-03-29 鄂宇 It crosses and wears construction of the highway building method for supporting
CN109868826A (en) * 2019-03-13 2019-06-11 温州开源建设工程有限公司 A kind of well-set foundation pit and its earthwork digging method
CN112095615A (en) * 2020-09-18 2020-12-18 中国建筑第八工程局有限公司 Supporting structure without inner support for deep foundation pit in soft soil area and construction method thereof
CN112962636A (en) * 2021-02-20 2021-06-15 云南建投基础工程有限责任公司 Positioning device and construction method for inclined steel pipe supporting side slope
CN113006085A (en) * 2021-03-12 2021-06-22 河北工业大学 Supporting-first-excavating foundation pit supporting system for inclined prefabricated steel piles and construction method of supporting-second-excavating foundation pit supporting system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108625377A (en) * 2018-06-11 2018-10-09 云南建投基础工程有限责任公司 A kind of foundation pit diagonal brace pile construction method and its auxiliary tool
CN109537418A (en) * 2018-12-10 2019-03-29 鄂宇 It crosses and wears construction of the highway building method for supporting
CN109868826A (en) * 2019-03-13 2019-06-11 温州开源建设工程有限公司 A kind of well-set foundation pit and its earthwork digging method
CN112095615A (en) * 2020-09-18 2020-12-18 中国建筑第八工程局有限公司 Supporting structure without inner support for deep foundation pit in soft soil area and construction method thereof
CN112962636A (en) * 2021-02-20 2021-06-15 云南建投基础工程有限责任公司 Positioning device and construction method for inclined steel pipe supporting side slope
CN113006085A (en) * 2021-03-12 2021-06-22 河北工业大学 Supporting-first-excavating foundation pit supporting system for inclined prefabricated steel piles and construction method of supporting-second-excavating foundation pit supporting system

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