CN202117068U - Micropile plate-type composite foundation - Google Patents

Micropile plate-type composite foundation Download PDF

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Publication number
CN202117068U
CN202117068U CN2011201606222U CN201120160622U CN202117068U CN 202117068 U CN202117068 U CN 202117068U CN 2011201606222 U CN2011201606222 U CN 2011201606222U CN 201120160622 U CN201120160622 U CN 201120160622U CN 202117068 U CN202117068 U CN 202117068U
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CN
China
Prior art keywords
foundation
mini pile
plate
board
micropile
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.)
Expired - Lifetime
Application number
CN2011201606222U
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Chinese (zh)
Inventor
苏荣臻
鲁先龙
丁士君
童瑞铭
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State Grid Corp of China SGCC
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China Electric Power Research Institute Co Ltd CEPRI
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Priority to CN2011201606222U priority Critical patent/CN202117068U/en
Application granted granted Critical
Publication of CN202117068U publication Critical patent/CN202117068U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model belongs to the transmission line foundation engineering field, and specifically relates to a micropile plate-type composite foundation, comprising a plate-type foundation and micropiles. The micropile plate-type composite foundation is characterized in that top ends of the micropiles penetrate into the plate-type foundation which consists of a base plate and a column on the base plate, and each micropile comprises a reinforcing cage and concretes II surrounding the reinforcing cage. The micropile foundation and the plate-type foundation are combined to form the micropile plate-type composite foundation, so as to replace conventional plate-type foundations. Compared with conventional plate-type foundations, the micropile plate-type composite foundation of the utility model allows a decrease in the amount of excavated earth and the amount of consumed materials and is mainly applied to loess or silt foundations in transmission line foundation engineering.

Description

The board-like composite foundation of mini pile
Technical field
The utility model belongs to the Foundation Design field of transmission line of electricity, is specifically related to the board-like composite foundation of a kind of mini pile.
Background technology
In the loess or silt foundation of work transmission line, when loading condition is big, generally adopt slab foundation 1 at present; As shown in Figure 1, elder generation excavation pit 3, formwork in foundation ditch 3 then in ground; In formwork, put into arrangement of reinforcement, fluid concrete in formwork then, forming the bottom is that base plate 11, top are the base form of column 12; Remove template, a backfill soil body 4 in foundation ditch 3 again after the moulding.
When loading condition was big, the buried depth and the base plate size of slab foundation were bigger, and this body concrete of basis and amount of reinforcement are also bigger; Simultaneously for satisfying the formwork requirement; The foundation ditch size of being excavated out is also very big, has a large amount of soil excavation backfill amounts like this, and construction intensity is very big.
The utility model content
In order to overcome the above-mentioned defective of prior art, the purpose of the utility model is to propose a kind of board-like composite foundation of mini pile that can reduce earthwork excavated volume, economical with materials consumption.
The utility model is realized through following technical scheme:
The board-like composite foundation of a kind of mini pile comprises slab foundation and mini pile, it is characterized in that: the top of said mini pile is stretched in the slab foundation.
Wherein, said slab foundation comprises base plate and places the column on the base plate, and said base plate and column are built by arrangement of reinforcement and concrete I and formed.
Wherein, the vertical section of said base plate is a rectangle, trapezoidal or stepped.
Wherein, the cross section of said column is circular or square.
Wherein, said mini pile comprises reinforcing cage and is centered around reinforcing cage concrete II on every side.
Wherein, said reinforcing cage comprises main muscle and the stirrup that is located at the main muscle outside, and the top of said main muscle extend in the slab foundation.
Wherein, said main muscle is imbedded 40 times of length >=main muscle diameter in the slab foundation.
Wherein, the end face of said mini pile is imbedded the height >=10cm of slab foundation.
The beneficial effect of the utility model is:
1, because the existence of mini pile reduces board-like key dimension in top and buried depth, reduce earthwork excavated volume, mini pile can adopt luoyang spade to draw and scrape out the hole, easy construction, and working strength is low.
2, because mini pile has bigger lateral area; Can utilize the side friction of the mini pile and the soil body to bear load, compare slab foundation, under identical loading condition; The concrete of the board-like composite foundation of mini pile and amount of reinforcement still less help practicing thrift the construction materials.
Description of drawings
Fig. 1 is the structural representation of existing slab foundation;
Fig. 2 is the structural representation of the board-like composite foundation of mini pile in the utility model;
Fig. 3 is the distribution schematic diagram of mini pile;
Fig. 4 is after construction is accomplished, the view of the board-like composite foundation of mini pile;
Wherein, 1-slab foundation, 11-base plate, 12-column, 13-arrangement of reinforcement, 14-concrete I 2-mini pile, 21-reinforcing cage, 22-concrete II, 23-master's muscle, 24-stirrup, 3-foundation ditch, the 4-soil body.
The specific embodiment
Below in conjunction with accompanying drawing the board-like composite foundation of the mini pile in the utility model is done further detailed explanation.
As shown in Figure 2, the composite foundation of the utility model comprises slab foundation 1 and four mini piles 2 by arranged in squares.Slab foundation 1 mainly is made up of base plate 11 and column 12 two parts, and base plate 11 is built moulding by arrangement of reinforcement 13 with concrete 14I with column 12; Mini pile 2 comprises reinforcing cage 21 and the concrete II22 that is centered around around the reinforcing cage, and reinforcing cage 21 mainly is made up of with stirrup 24 main muscle 23, and four main muscle are arranged to square and per two all intrinsic stirrups 24 that are provided with by zigzag in the main muscle outside.Four mini piles 2 place the bottom of slab foundation 1, and 2 main muscle 23 of mini pile extend in the base plate 11 of slab foundation, makes slab foundation and mini pile acting in conjunction, form the board-like composite foundation of mini pile.
In order to make this composite foundation can bear bigger uplift force; The length that the main muscle 23 that mini pile 2 should be set is imbedded slab foundation 1 base plate 11 is not less than 40 times of main muscle 23 diameters, and the height h that slab foundation 1 base plate 11 is imbedded on the top (being the end face of concrete II22) that mini pile 2 is set is not less than 10cm.Adopt the board-like composite foundation of mini pile of this routine structure can bear 150 tons even higher uplift force.
As shown in Figure 3, adopt four mini piles 2 to press square profile in the base plate 11 of slab foundation 1 in this example, the vertical section of base plate 11 can be rectangle, trapezoidal or stepped, the cross section of column 12 can be circular or square.
The concrete work progress of the board-like composite foundation of this mini pile is following:
1, draws the hole that digs out mini pile 2 with luoyang spade;
2, according to the design and the construction requirement of reinforcing cage, the stirrup 24 of putting more energy into is located at the made reinforcing cage in main muscle 23 outsides, in hole, puts into the reinforcing cage 21 of mini pile;
3, fluid concrete II22 in the hole of mini pile 2 makes itself and reinforcing cage 21 gluings form mini piles 2;
4, the foundation ditch 3 of excavation top slab foundation 1 by the size supporting template on board-like basis, is put into the arrangement of reinforcement 13 of base plate 11 and column 12 then;
5, fluid concrete I 14 in the template of slab foundation 1 makes concrete I 14 become slab foundation 1 with arrangement of reinforcement 13 gluings;
6, before the fluid concrete, the length that makes the main muscle 23 of mini pile get into base plates 11 is 40 times of main muscle 23 diameters, and the height that makes the end face of the concrete II22 of mini pile get into base plate 11 simultaneously is 10cm; Be secured to slab foundation stressed jointly with mini pile;
5, last, the template of dismounting slab foundation 1, backfill surrounding soil 4, as shown in Figure 4.
This composite foundation is with mini pile basis and slab foundation compound action; Form the board-like composite foundation of mini pile; Be used to replace traditional slab foundation, compare, can reduce earthwork excavated volume with slab foundation; The economical with materials consumption is mainly used in transmission line of electricity Foundation Design loess or the silt foundation.
Should be noted that at last: above embodiment only in order to the explanation the utility model technical scheme but not to its restriction; Although the utility model has been carried out detailed explanation with reference to the foregoing description; Under the those of ordinary skill in field be to be understood that: still can make amendment or be equal to replacement the specific embodiment of the utility model; And do not break away from any modification of the utility model spirit and scope or be equal to replacement, it all should be encompassed in the middle of the claim scope of the utility model.

Claims (8)

1. the board-like composite foundation of mini pile comprises slab foundation (1) and mini pile (2), and it is characterized in that: the top of said mini pile (2) is stretched in the slab foundation (1).
2. the board-like composite foundation of mini pile as claimed in claim 1 is characterized in that: said slab foundation (1) comprises base plate (11) and places the column (12) on the base plate, and said base plate (11) and column (12) are built by arrangement of reinforcement (13) and concrete I (14) and formed.
3. the board-like composite foundation of mini pile as claimed in claim 2 is characterized in that: the vertical section of said base plate (11) is a rectangle, trapezoidal or stepped.
4. the board-like composite foundation of mini pile as claimed in claim 2 is characterized in that: the cross section of said column (12) is for circular or square.
5. the board-like composite foundation of mini pile as claimed in claim 1 is characterized in that: said mini pile (2) comprises reinforcing cage (21) and is centered around reinforcing cage concrete II (22) on every side.
6. the board-like composite foundation of mini pile as claimed in claim 5 is characterized in that: said reinforcing cage (21) comprises main muscle (23) and is located at the stirrup (24) in the main muscle outside that the top of said main muscle extend in the slab foundation (1).
7. the board-like composite foundation of mini pile as claimed in claim 6 is characterized in that: said main muscle (23) is imbedded 40 times of length >=main muscle (23) diameter in the slab foundation (1).
8. like the board-like composite foundation of any described mini pile of claim 5-7, it is characterized in that: the end face of said mini pile (2) is imbedded the height >=10cm of slab foundation (1).
CN2011201606222U 2011-05-19 2011-05-19 Micropile plate-type composite foundation Expired - Lifetime CN202117068U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011201606222U CN202117068U (en) 2011-05-19 2011-05-19 Micropile plate-type composite foundation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011201606222U CN202117068U (en) 2011-05-19 2011-05-19 Micropile plate-type composite foundation

Publications (1)

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CN202117068U true CN202117068U (en) 2012-01-18

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104179206A (en) * 2014-09-02 2014-12-03 国家电网公司 Wind prevention and sand fixation reinforcing method of transmission line tower foundation
CN104481192A (en) * 2014-11-19 2015-04-01 国网河南省电力公司濮阳供电公司 Recyclable high voltage tower pedestal
CN110792095A (en) * 2019-11-11 2020-02-14 山东建筑大学 Multi-pile bearing platform-spiral anchor composite foundation
CN113389216A (en) * 2021-07-27 2021-09-14 国网河南省电力公司经济技术研究院 Transmission tower pile foundation structure

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104179206A (en) * 2014-09-02 2014-12-03 国家电网公司 Wind prevention and sand fixation reinforcing method of transmission line tower foundation
CN104179206B (en) * 2014-09-02 2016-04-20 国家电网公司 A kind of reinforcement means of checking winds and fixing drifting sand of transmission line tower foundation
CN104481192A (en) * 2014-11-19 2015-04-01 国网河南省电力公司濮阳供电公司 Recyclable high voltage tower pedestal
CN104481192B (en) * 2014-11-19 2017-04-12 国网河南省电力公司濮阳供电公司 Recyclable high voltage tower pedestal
CN110792095A (en) * 2019-11-11 2020-02-14 山东建筑大学 Multi-pile bearing platform-spiral anchor composite foundation
CN113389216A (en) * 2021-07-27 2021-09-14 国网河南省电力公司经济技术研究院 Transmission tower pile foundation structure

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C14 Grant of patent or utility model
GR01 Patent grant
ASS Succession or assignment of patent right

Owner name: CHINA ELECTRIC POWER RESEARCH INSTITUTE

Effective date: 20140402

Owner name: STATE GRID CORPORATION OF CHINA

Free format text: FORMER OWNER: CHINA ELECTRIC POWER RESEARCH INSTITUTE

Effective date: 20140402

C41 Transfer of patent application or patent right or utility model
COR Change of bibliographic data

Free format text: CORRECT: ADDRESS; FROM: 100192 HAIDIAN, BEIJING TO: 100031 XICHENG, BEIJING

TR01 Transfer of patent right

Effective date of registration: 20140402

Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing

Patentee after: State Grid Corporation of China

Patentee after: China Electric Power Research Institute

Address before: 100192 Beijing city Haidian District Qinghe small Camp Road No. 15

Patentee before: China Electric Power Research Institute

CX01 Expiry of patent term

Granted publication date: 20120118

CX01 Expiry of patent term