CN102677679A - Cement-soil diaphragm wall with cast-in-situ special-shaped reinforced concrete pile cores for construction of foundation pits - Google Patents

Cement-soil diaphragm wall with cast-in-situ special-shaped reinforced concrete pile cores for construction of foundation pits Download PDF

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Publication number
CN102677679A
CN102677679A CN2011100530324A CN201110053032A CN102677679A CN 102677679 A CN102677679 A CN 102677679A CN 2011100530324 A CN2011100530324 A CN 2011100530324A CN 201110053032 A CN201110053032 A CN 201110053032A CN 102677679 A CN102677679 A CN 102677679A
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CN
China
Prior art keywords
cement
soil
concrete pile
diaphragm wall
cast
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
CN2011100530324A
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Chinese (zh)
Inventor
钱圣徳
邹宗煊
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.)
WENZHOU CHANGCHENG FOUNDATION ENGINEERING Co Ltd
Original Assignee
WENZHOU CHANGCHENG 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 WENZHOU CHANGCHENG FOUNDATION ENGINEERING Co Ltd filed Critical WENZHOU CHANGCHENG FOUNDATION ENGINEERING Co Ltd
Priority to CN2011100530324A priority Critical patent/CN102677679A/en
Publication of CN102677679A publication Critical patent/CN102677679A/en
Pending legal-status Critical Current

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Abstract

A cement-soil diaphragm wall with cast-in-situ special-shaped reinforced concrete pile cores for construction of foundation pits is characterized in that in double-shaft or three-shaft cement-soil diaphragm wall, the cast-in-situ special-shaped reinforced concrete pile cores are arranged at intervals ranging from 0.8m to 3m; the cement-soil diaphragm wall is formed by cement mixing piles with diameters ranging from 0.5m to 1.5m in a crossed and parallel manner; and the sections of the reinforced concrete pile cores can be H-shaped, T-shaped, square, rectangular or oval. Compared with the prior art, the cement-soil diaphragm wall has the advantages that construction process is simple, bending resistance of each concrete unit is high, steel usage amount is saved, manufacturing cost of support construction of the foundation pits is low, water stoppage and infiltration prevention effect of cement soil is fine.

Description

Building foundation pit is with cast-in-place deformed bar concrete pile core cement-soil diaphragm wall
Technical field
The present invention relates to building engineering field, relate in particular to building foundation pit supporting with cast-in-place deformed bar concrete pile core cement-soil diaphragm wall.
Background technology
At present, in the urban construction of the coastal soft foundation of China, the degree of depth adopts the drill-pouring pile as fender post at the pattern foundation pit supporting structure of 8-15m more; Or insert i iron in the cement-soil water-stop curtain of introduction Japan; Promptly logically be referred to as SMW worker's method, this two schemes rolled steel dosage is big, and construction costs is high.
Summary of the invention
The object of the present invention is to provide a kind of building foundation pit supporting with cast-in-place deformed bar concrete pile core cement-soil diaphragm wall; The rolled steel dosage of using than existing conventional pattern foundation pit supporting structure scheme reduces 20-30%; The support engineering cost reduces 20-25%, can also save the higher interior support of supporting expense.
The objective of the invention is to realize through following technical scheme: building foundation pit supporting is with cast-in-place deformed bar concrete pile core cement-soil diaphragm wall; It is characterized in that; In twin shaft or triaxial cement diaphragm wall; Be provided with cast-in-place deformed bar concrete pile core by spacing 0.8-3m, cement-earth underground continuous wall is that the cement mixing pile of diameter 0.5-1.5m intersects arranged side by side the composition, and reinforced concrete pile core cross section is I shape or T font or Back Word type or rectangle or oblate type.Stake core cross section shapes, specification and stake core, the cement soil continuous wall degree of depth are looked foundation depth and soil property decision, the wide 0.6-2m of general stake core, the thick 0.15-0.8m of stake core, stake core length 8-25m, cement mixing method length 12-30m.
The present invention compared with prior art has following remarkable advantage: building foundation pit supporting is with cast-in-place deformed bar concrete pile core cement-soil diaphragm wall, and it is simple to have construction technology; It is high that the unit concrete produces resistance to bending, and rolled steel dosage is economized, and the foundation pit supporting project cost is lower; The cement-soil stagnant water effect is because of needing in the construction that the concrete pile cores is inserted cement-soil; When placing of concrete, the tube edge vibration is proposed on the limit, makes cement-soil further stir, push; Cement and soil stir close better, more even, anti-seepage effect is just better.
Description of drawings
Fig. 1 is a generalized section of the present invention.
Among the figure: 1. miscellaneous fill, 2. sprayed mortar, 3. soil nailing, 4. concrete Guan Liang, 5. churning anchoring pile, 6. cement-soil, 7. reinforced concrete pile core, 8. mud, 9. foundation ditch, 10. absolute altitude.
Fig. 2 is a cross sectional representation of the present invention.
Among the figure: 1. cement-soil, 2. reinforced concrete pile core, 3 main muscle, 4. stirrups.
Fig. 3 is a stake core form cross sectional representation of the present invention.
Among the figure: 1. cement-soil, 2. reinforced concrete pile core, 3 main muscle, 4. stirrups.
The specific embodiment
An exemplary embodiments of the present invention such as Fig. 1 before building foundation pit excavates, press design drawing position construction cement mixing method (6) diaphragm wall (like 1 among Fig. 2) by the triaxial cement mixing pile machine on the foundation ditch building site; Simultaneously, the vibrator sunk pile machine then shakes into the I shape punching block in cement-soil (6) with vibrating hammer by designing requirement, and punching block length specification looks the excavation of foundation pit degree of depth and soil property is confirmed; Punching block shakes to design elevation, puts into reinforcing cage, again cast-in-situ concrete; Pipe is carried in vibration while watering; Promptly accomplish pile core construction, go round and begin again, accomplish all reinforced concrete pile core constructions.

Claims (1)

1. building foundation pit supporting is with cast-in-place deformed bar concrete pile core cement-soil diaphragm wall; It is characterized in that; In twin shaft or triaxial cement diaphragm wall; Be provided with cast-in-place deformed bar concrete pile core by spacing 0.8-3m, cement-earth underground continuous wall is that the cement mixing pile of diameter 0.5-1.5m intersects arranged side by side the composition, and reinforced concrete pile core cross section is I shape or T font or Back Word type or rectangle or oblate type.
CN2011100530324A 2011-03-07 2011-03-07 Cement-soil diaphragm wall with cast-in-situ special-shaped reinforced concrete pile cores for construction of foundation pits Pending CN102677679A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011100530324A CN102677679A (en) 2011-03-07 2011-03-07 Cement-soil diaphragm wall with cast-in-situ special-shaped reinforced concrete pile cores for construction of foundation pits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011100530324A CN102677679A (en) 2011-03-07 2011-03-07 Cement-soil diaphragm wall with cast-in-situ special-shaped reinforced concrete pile cores for construction of foundation pits

Publications (1)

Publication Number Publication Date
CN102677679A true CN102677679A (en) 2012-09-19

Family

ID=46810198

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011100530324A Pending CN102677679A (en) 2011-03-07 2011-03-07 Cement-soil diaphragm wall with cast-in-situ special-shaped reinforced concrete pile cores for construction of foundation pits

Country Status (1)

Country Link
CN (1) CN102677679A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103410156A (en) * 2013-08-28 2013-11-27 上海岩土工程勘察设计研究院有限公司 Recyclable vertical steel tube front supporting envelop enclosure and applying method thereof
CN105951743A (en) * 2016-06-07 2016-09-21 深圳市宏业基基础工程有限公司 Plum blossom-shaped profile steel cement stirring wall
CN105951761A (en) * 2016-06-07 2016-09-21 深圳市宏业基基础工程有限公司 Construction method of plum blossom-shaped profile steel cement stirring wall

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103410156A (en) * 2013-08-28 2013-11-27 上海岩土工程勘察设计研究院有限公司 Recyclable vertical steel tube front supporting envelop enclosure and applying method thereof
CN103410156B (en) * 2013-08-28 2016-01-27 上海岩土工程勘察设计研究院有限公司 Support space enclosing structure and application process thereof before a kind of recyclable vertical type steel pipe
CN105951743A (en) * 2016-06-07 2016-09-21 深圳市宏业基基础工程有限公司 Plum blossom-shaped profile steel cement stirring wall
CN105951761A (en) * 2016-06-07 2016-09-21 深圳市宏业基基础工程有限公司 Construction method of plum blossom-shaped profile steel cement stirring wall

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C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20120919