CN202626978U - Cemented soil secant pile group, diaphragm wall constituted by same and building foundation pit support system constituted by cemented soil secant pile group - Google Patents

Cemented soil secant pile group, diaphragm wall constituted by same and building foundation pit support system constituted by cemented soil secant pile group Download PDF

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Publication number
CN202626978U
CN202626978U CN 201220149260 CN201220149260U CN202626978U CN 202626978 U CN202626978 U CN 202626978U CN 201220149260 CN201220149260 CN 201220149260 CN 201220149260 U CN201220149260 U CN 201220149260U CN 202626978 U CN202626978 U CN 202626978U
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CN
China
Prior art keywords
cement
soil
stake
interlock
foundation pit
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Application number
CN 201220149260
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Chinese (zh)
Inventor
付文光
王宪章
罗小满
张兴杰
卓志飞
杨志银
张俊
李鑫权
姜琦
孙春阳
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中冶建筑研究总院有限公司
中国京冶工程技术有限公司
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Priority to CN 201220149260 priority Critical patent/CN202626978U/en
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Publication of CN202626978U publication Critical patent/CN202626978U/en

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Abstract

The utility model discloses a waterproof curtain supporting structure in which cemented soil secant piles are used as a diaphragm wall and a building foundation pit waterproof curtain to be combined with a soil nailing wall or occluded with reinforced concrete piles. The cemented soil secant piles are used as the diaphragm wall for rivers, lakes, sea and tailings dams and the waterproof curtains for the deep building foundation pits to replace the traditional high-pressure rotary jet grouting piles and deep mixed piles so as to constitute the diaphragm wall and the waterproof curtain, and has the advantages of convenience for construction, visual property for monitoring, controllability in quality, safety, reliability and the like. After the cemented soil secant piles and the soil nailing wall are combined to support side slopes of the foundation pit or the cemented soil piles are occluded with reinforced concrete piles to jointly support the side slopes of the deep foundation pit, the anti-permeability and leakage-proof effects of the side slopes of the foundation pits can be enhanced, the safety of the foundation pits can be enhanced, the ground settlement around the foundation pits can be reduced, and important environment-protection and social benefits are achieved.

Description

Impervious wall, the building foundation pit supporting system of a kind of cement-soil interlock stake group and formation thereof
Technical field
The utility model belongs to the cement soil pile of dash dykes and dams and deep foundation pit of construction, particularly colony's formula pile body group of mutual interlock.The purposes of cement-soil interlock stake group is as the impervious wall of river, river, lake, sea, tailing dam and the water-stop curtain of deep foundation pit of construction.
Background technology
The impervious wall of traditional river, river, lake, sea, tailing dam and the water-stop curtain of deep foundation pit of construction generally adopt high-pressure rotary jet grouting pile, deep-mixed pile.The high-pressure rotary jet grouting pile characteristics are cement paste to be sprayed into utilize the rotation and the lifting of stake machine drill tool to make the cement paste and the soil body mix pile body under the face of land; The deep-mixed pile characteristics are that cement paste or cement flour are sprayed under the face of land, utilize the stirring vane of stake machine that itself and the soil body are stirred, mix pile body.Both pile qualities receive the factor affecting such as hoisting velocity of geological conditions, soil body water content, construction equipment to be difficult to reach designing requirement; Particularly disguised construction; On-the-spot supervision is difficult to; Therefore, quality problems such as pile body leakiness, pie interlayer, bottom interlock width gap inadequately be prone to taking place on the engineering, causes engineering accidents such as water stopping curtain seepage.
Summary of the invention
The present invention relates to a kind of cement-soil interlock stake group, said cement-soil interlock stake group is made up of three cement-soil interlock stakes, forms two cement-soil interlock stake groups with interlock width between three cement-soil interlock stakes.
The diameter of said every cement-soil interlock stake greater than 300mm, the stake height greater than 10m, the interlock width is specially and should be decided according to on-site actual situations by the project planner less than the radius of cement-soil interlock stake.
Sleeve pipe retaining wall or mud off are adopted in said cement-soil interlock stake.
Establish joint bar in the said cement-soil interlock stake, said joint bar is shaped steel or reinforcing bar.
A kind of impervious wall by described cement-soil interlock stake group combination, said impervious wall is by single the combining of cement-soil interlock stake.
A kind of building foundation pit supporting system that comprises described cement-soil interlock stake group, said building foundation pit supporting system is by cement-soil interlock stake and soil nailing wall be combined into.
A kind of building foundation pit supporting system that comprises described cement-soil interlock stake group, said building foundation pit supporting system is by cement-soil interlock stake and reinforced concrete pile and prestress anchorage cable be combined into; Said cement-soil interlock stake is to construct by a determining deviation according to the diameter of said reinforced concrete pile, and concrete spacing range should be decided according to on-site actual situations by the project planner.
A kind of building foundation pit supporting system that comprises described cement-soil interlock stake group, said building foundation pit supporting system is by cement-soil interlock stake and reinforced concrete pile and the interior be combined into that supports; Support in said and select reinforced concrete structure or steel work.
The utility model discloses the impervious wall and the water-stop curtain that replace traditional high-pressure rotary jet grouting pile, deep-mixed pile to constitute as the water-stop curtain of the impervious wall of river, river, lake, sea, tailing dam and deep foundation pit of construction with cement-soil interlock stake group.Because the construction technology of cement soil pile group is that original soil is dug out, will changes by the cement-soil of given match ratio mix and fill out or use the soil cement slurry pour-shaping.Therefore, have easy construction, monitoring advantage such as directly perceived, quality controllable, safe and reliable.With cement-soil interlock stake and soil nailing wall combined supporting excavation slope or cement-soil interlock stake and reinforced concrete pile interlock combined supporting deep foundation pit slope can strengthen excavation slope impervious leak preventing effect, improve foundation ditch safety, prevent the surface settlement of foundation ditch periphery to have important environmental protection and social benefit.
Description of drawings
Fig. 1 is the single combining structure sketch map of the utility model cement-soil interlock stake group.
Fig. 2 is the sketch map of the building foundation pit supporting system plan view that combines with the soil nailing wall of the utility model cement-soil interlock stake group.
Fig. 3 is the sketch map of the building foundation pit supporting system sectional drawing that combines with the soil nailing wall of the utility model cement-soil interlock stake group.
Fig. 4 is the sketch map of the building foundation pit supporting system plan view that combines with reinforced concrete pile and prestress anchorage cable of the utility model cement-soil interlock stake group.
Fig. 5 is the sketch map of the building foundation pit supporting system sectional drawing that combines with reinforced concrete pile and prestress anchorage cable of the utility model cement-soil interlock stake group.
Fig. 6 is the utility model cement-soil interlock stake group and reinforced concrete pile and the interior sketch map that supports the building foundation pit supporting system plan view that combines.
Fig. 7 is the utility model cement-soil interlock stake group and reinforced concrete pile and the interior sketch map that supports the building foundation pit supporting system sectional drawing that combines.
Label is among the figure: cement-soil interlock stake 1, interlock width 2, soil nailing wall 3, joint bar 4, soil nailing 5, reinforced concrete pile 6, prestress anchorage cable 7, interior support 8.
The specific embodiment
The present invention is able to implement in the following manner.
The present invention relates to a kind of cement-soil interlock stake group, said cement-soil interlock stake group is made up of three cement-soil interlock stakes, forms two cement-soil interlock stake groups with interlock width between three cement-soil interlock stakes.The diameter of said every cement-soil interlock stake greater than 300mm, the stake height greater than 10m, the interlock width is specially and should be decided according to on-site actual situations by the project planner less than the radius of cement-soil interlock stake.Sleeve pipe retaining wall or mud off are adopted in said cement-soil interlock stake.Establish joint bar in the said cement-soil interlock stake, said joint bar is shaped steel or reinforcing bar.A kind of impervious wall by described cement-soil interlock stake group combination, said impervious wall is by single the combining of cement-soil interlock stake.A kind of building foundation pit supporting system that comprises described cement-soil interlock stake group, said building foundation pit supporting system is by cement-soil interlock stake and soil nailing wall be combined into.A kind of building foundation pit supporting system that comprises described cement-soil interlock stake group, said building foundation pit supporting system is by cement-soil interlock stake and reinforced concrete pile and prestress anchorage cable be combined into; Said cement-soil interlock stake is to construct by a determining deviation according to the diameter of said reinforced concrete pile, and concrete spacing range should be decided according to on-site actual situations by the project planner.A kind of building foundation pit supporting system that comprises described cement-soil interlock stake group, said building foundation pit supporting system is by cement-soil interlock stake and reinforced concrete pile and the interior be combined into that supports; Support in said and select reinforced concrete structure or steel work.
As shown in Figure 1, carry out the unwrapping wire of cement-soil interlock stake group earlier and locate, carry out pile hole construction again, the original soil in the stake hole is all dug out, cave in for preventing a hole, can adopt sleeve pipe retaining wall or mud off; After reaching the degree of depth and diameter of design, be filled into pile in the hole to cement-soil or the soil cement slurry prepared by the design proportioning; Move the jumping of stake machine then and dig second cement-soil interlock stake.The cement-soil interlock stake of treating the front is carried out the construction of cement-soil interlock stake, thereby between three, is formed two cement-soil interlock stake groups with interlock width after reaching suitable intensity in the middle of two piles.
And the like, can accomplish the construction of good impervious wall of anti-permeability performance or water-stop curtain.Interlock width 2 is generally less than the radius of cement earth pile; The diameter of cement-soil interlock stake 1 is generally greater than 300mm.According to stake machine technology parameter and on-the-spot actual definite.
Like Fig. 2 and Fig. 3, the building foundation pit supporting system that combines with soil nailing wall 3 for the utility model cement-soil interlock stake 1.The water-stop curtain construction that cement-soil interlock stake forms is with above-mentioned, and the joint bar 4 of cement-soil interlock stake 1 is generally shaped steel or reinforcing bar, can omit according to building foundation pit situation joint bar 4.After treating that the construction of cement-soil interlock stake 1 water-stop curtain is accomplished, begin the construction of soil nailing wall 3 and soil nailing 5 again, soil nailing wall 3 is successively constructed by the building foundation pit supporting requirement with soil nailing 5, until the foundation ditch bottom of constructing.The characteristics of this combined foundation ditch support system are that the foundation ditch stagnant water effect is good, and the high-pressure rotary jet grouting pile that foundation ditch periphery displacement amount and settling amount are traditional relatively and the water-stop curtain of deep-mixed pile are little, also are beneficial to the safety of foundation ditch and surrounding environment.
Like Fig. 4 and Fig. 5 is the building foundation pit supporting system that the utility model cement-soil interlock stake 1 combines with reinforced concrete pile 6 and prestress anchorage cable 7.Cement-soil interlock stake 1 is to construct by a determining deviation according to the diameter of reinforced concrete pile 6, the same Fig. 1 of pile-formation process.Treat that cement-soil interlock stake 1 reaches certain intensity, can carry out the construction of reinforced concrete pile 6, interlock width 2 is fixed by design.Cement-soil interlock stake 1 is constructed with reinforced concrete pile 6 after the completion; Can carry out the layering of foundation ditch and cut the earth, the construction of prestress anchorage cable 7 is carried out in the absolute altitude position of waiting the first floor prestress anchorage cable 7 of cutting the earth; Behind prestress anchorage cable 7 tensioning fixations, can carry out second layer shoveling work.And the like, after 7 constructions of second layer prestress anchorage cable are accomplished, just can proceed excavation and construction.The building foundation pit supporting system characteristics that this cement-soil interlock stake 1 combines with reinforced concrete pile 6 and prestress anchorage cable 7 are: it is little with ground settlement that stagnant water effect is good, foundation ditch is safe and reliable, the peripheral horizontal displacement of foundation ditch is little.
Like Fig. 6 and Fig. 7 is the building foundation pit supporting system that the utility model cement-soil interlock stake 1 combines with reinforced concrete pile 6 and interior support 8.The construction of cement-soil interlock stake 1 and reinforced concrete pile 6 is with above-mentioned.After cement-soil interlock stake 1 and reinforced concrete pile 6 constructions are accomplished, support 8 construction in can carrying out.Interior support 8 can be that reinforced concrete structure also can be a steel work.After supporting 8 construction completion in treating, just can carry out the foundation ditch excavation and construction.This cement-soil interlock stake with the building foundation pit supporting system characteristics that reinforced concrete pile 6 and interior support 8 combine is: stagnant water effect is good, and support rigidity is big, and foundation ditch periphery horizontal displacement is little little with ground settlement.

Claims (10)

1. cement-soil interlock stake group, it is characterized in that: said cement-soil interlock stake group is made up of three cement-soil interlock stakes, forms two cement-soil interlock stake groups with interlock width between three cement-soil interlock stakes.
2. cement-soil interlock stake group according to claim 1 is characterized in that, the diameter of every said cement-soil interlock stake greater than 300mm, the stake height greater than 10m, the interlock width is less than the radius of cement-soil interlock stake.
3. cement-soil interlock stake group according to claim 2 is characterized in that, sleeve pipe retaining wall or mud off are adopted in said cement-soil interlock stake.
4. cement-soil interlock stake group according to claim 3 is characterized in that, establishes joint bar in the said cement-soil interlock stake, and said joint bar is shaped steel or reinforcing bar.
5. impervious wall that is combined by the described cement-soil interlock of claim 4 stake group, it is characterized in that: said impervious wall is made up of with single combining form cement-soil interlock stake.
6. building foundation pit supporting system that comprises the described cement-soil interlock of claim 4 stake group, it is characterized in that: said building foundation pit supporting system is by cement-soil interlock stake and soil nailing wall be combined into.
7. building foundation pit supporting system that comprises the described cement-soil interlock of claim 4 stake group, it is characterized in that: said building foundation pit supporting system is by cement-soil interlock stake and reinforced concrete pile and prestress anchorage cable be combined into.
8. building foundation pit supporting system according to claim 7 is characterized in that: said cement-soil interlock stake is to construct by a determining deviation according to the diameter of said reinforced concrete pile.
9. a building foundation pit supporting system that comprises the described cement-soil interlock of claim 4 stake group is characterized in that: support be combined in said building foundation pit supporting system is reached by cement-soil interlock stake and reinforced concrete pile.
10. building foundation pit supporting system according to claim 9 is characterized in that: support in said and select reinforced concrete structure or steel work.
CN 201220149260 2012-04-10 2012-04-10 Cemented soil secant pile group, diaphragm wall constituted by same and building foundation pit support system constituted by cemented soil secant pile group CN202626978U (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103938637A (en) * 2014-04-14 2014-07-23 叶长青 Construction method for rigid pile and flexible pile combination foundation pit supporting for hard-interlayer soft soil geology
CN104499495A (en) * 2014-12-23 2015-04-08 中国建筑西南勘察设计研究院有限公司 Waterproof curtain wall for foundation pit
CN105586973A (en) * 2015-01-16 2016-05-18 刘献刚 Composite snap-in pile retaining wall construction method and a composite snap-in pile retaining wall structure
CN106223313A (en) * 2016-07-22 2016-12-14 江苏科兴项目管理有限公司 A kind of impervious wall construction method using five minor diameter mixing piles
CN106337429A (en) * 2016-08-30 2017-01-18 中国建筑西南勘察设计研究院有限公司 Engaged type pouring groove wall pile foundation
CN109930620A (en) * 2019-02-25 2019-06-25 上海智平基础工程有限公司 The construction method of water-stop curtain pile foundation and pile foundation unit is built using waste mud
CN110158626A (en) * 2019-06-20 2019-08-23 广东宏丰建设工程有限公司 A kind of water stop curtain structure
CN111778968A (en) * 2020-06-29 2020-10-16 中煤科工集团西安研究院有限公司 Construction method of high-content fly ash-based occlusive pile for waterproof curtain

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103938637A (en) * 2014-04-14 2014-07-23 叶长青 Construction method for rigid pile and flexible pile combination foundation pit supporting for hard-interlayer soft soil geology
CN103938637B (en) * 2014-04-14 2016-04-06 叶长青 Folder hard formation Soft Clay rigid-flexible mechanical arm base pit stand construction
CN104499495A (en) * 2014-12-23 2015-04-08 中国建筑西南勘察设计研究院有限公司 Waterproof curtain wall for foundation pit
CN105586973A (en) * 2015-01-16 2016-05-18 刘献刚 Composite snap-in pile retaining wall construction method and a composite snap-in pile retaining wall structure
CN106223313A (en) * 2016-07-22 2016-12-14 江苏科兴项目管理有限公司 A kind of impervious wall construction method using five minor diameter mixing piles
CN106337429A (en) * 2016-08-30 2017-01-18 中国建筑西南勘察设计研究院有限公司 Engaged type pouring groove wall pile foundation
CN109930620A (en) * 2019-02-25 2019-06-25 上海智平基础工程有限公司 The construction method of water-stop curtain pile foundation and pile foundation unit is built using waste mud
CN110158626A (en) * 2019-06-20 2019-08-23 广东宏丰建设工程有限公司 A kind of water stop curtain structure
CN110158626B (en) * 2019-06-20 2020-11-24 广东宏丰建设工程有限公司 Waterproof curtain structure
CN111778968A (en) * 2020-06-29 2020-10-16 中煤科工集团西安研究院有限公司 Construction method of high-content fly ash-based occlusive pile for waterproof curtain

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20121226

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