CN105839661A - Anti-pulling open caisson foundation for power transmission tower - Google Patents

Anti-pulling open caisson foundation for power transmission tower Download PDF

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Publication number
CN105839661A
CN105839661A CN201610316698.7A CN201610316698A CN105839661A CN 105839661 A CN105839661 A CN 105839661A CN 201610316698 A CN201610316698 A CN 201610316698A CN 105839661 A CN105839661 A CN 105839661A
Authority
CN
China
Prior art keywords
open caisson
basis
cylinder
power transmission
hole
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
CN201610316698.7A
Other languages
Chinese (zh)
Inventor
朱小军
费康
洪家宝
王波
杨丹燕
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.)
Yangzhou University
Original Assignee
Yangzhou University
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 Yangzhou University filed Critical Yangzhou University
Priority to CN201610316698.7A priority Critical patent/CN105839661A/en
Publication of CN105839661A publication Critical patent/CN105839661A/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
    • E02D27/00Foundations as substructures
    • E02D27/10Deep foundations
    • E02D27/18Foundations formed by making use of caissons
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00Foundations as substructures
    • E02D27/32Foundations for special purposes
    • E02D27/42Foundations for poles, masts or chimneys

Abstract

The invention discloses an anti-pulling open caisson foundation for a power transmission tower. The anti-pulling open caisson foundation comprises a cylindrical open caisson (1), a sealing bottom (2) arranged at the lower end of the open caisson (1), and a sealing cover (3) arranged at the upper end of the open caisson (1). A plurality of through holes (11) are formed in the side wall of the open caisson (1). A column (4) is inserted in each through hole (11) in a connected manner, and is perpendicular to the axis of the open caisson (1). The anti-pulling open caisson foundation for the power transmission tower is high in anti-pulling force, low in production cost and convenient to construct.

Description

Power transmission tower resistance to plucking well foundation
Technical field
The invention belongs to power transmission tower basis technical field, a kind of withdrawal resistance is strong, production cost is low, easy construction Power transmission tower resistance to plucking well foundation.
Background technology
Power transmission tower does not only rely on and is placed in the bearing capacity that the basis bottom it provides enough, also needs the resistance to plucking that basis offer is enough Power.
Current power transmission tower often uses raft foundation or pile foundation.When using raft foundation, owing to foundation's bottom area is big, As for providing enough withdrawal resistances, then needed to add great burying, cause earthwork evacuation amount big;As for reduce earthwork evacuation amount, Then buried depth, it is difficult to enough withdrawal resistances are provided.When using pile foundation, then need to use cast-in-situ bored pile can meet power transmission tower The bearing capacity on basis and resistance to plucking requirement, thus cost is higher.
Therefore, prior art there is the problem that power transmission tower is basic when ensureing enough withdrawal resistance requirements, and cost is high.
Summary of the invention
It is an object of the invention to provide a kind of power transmission tower resistance to plucking well foundation, withdrawal resistance is strong, production cost is low, construction party Just.
The technical solution realizing the object of the invention is:
A kind of power transmission tower resistance to plucking well foundation, the back cover including cylindric open caisson, being placed in described open caisson lower end, be placed in described The capping of open caisson upper end, the sidewall of described open caisson is provided with multiple through hole, grafting one cylinder in each through hole, described cylinder Vertical with open caisson axis.
Compared with prior art, its remarkable advantage is the present invention:
1, withdrawal resistance is strong: and all-in-one-piece multiple cylinder vertical with open caisson axis as root key, based on provide enough Withdrawal resistance.
2, production cost is low, easy construction: use open caisson mode, greatly reduces excavation of foundation pit amount, withdrawal resistance and holding Load power relies primarily on subsoil and backfill soil provides, and greatly reduces concrete material and uses, and production cost is low, and construction party Just.
The present invention is described in further detail with detailed description of the invention below in conjunction with the accompanying drawings.
Accompanying drawing explanation
Fig. 1 is the structural representation of power transmission tower resistance to plucking well foundation of the present invention.
Fig. 2 is the top view of power transmission tower resistance to plucking well foundation of the present invention.
In figure, open caisson 1, back cover 2, capping 3, through hole 11, cylinder 4.
Detailed description of the invention
As it is shown in figure 1, power transmission tower resistance to plucking well foundation of the present invention, including cylindric open caisson 1, it is placed in described open caisson 1 time The back cover 2 held, the capping 3 being placed in described open caisson 1 upper end, the sidewall of described open caisson 1 is provided with multiple through hole 11, often Grafting one cylinder 4 in individual through hole 11, described cylinder 4 is vertical with open caisson 1 axis.
Described open caisson 1 is formed by armored concrete is prefabricated.
Described cylinder 4 is formed by armored concrete is prefabricated.
Described back cover 2 is formed by armored concrete cast in situs.
Described capping 3 is formed by armored concrete cast in situs.
Described cylinder 4 and through hole 11 loose fit on open caisson 1 sidewall, cylinder 4 install in place after, at cylinder 4 and through hole Casting concrete between 11 gaps.
Backfill element soil in described open caisson 1.
Backfilling element soil in described open caisson 1 periphery and roll compacting, compacting factor is not less than 0.92, height after the earthen backfill of described element Go out ground 350mm.
The power transmission tower resistance to plucking well foundation of each present invention, is placed on an angle bottom power transmission tower tower body.
The construction technology of of the present invention power transmission tower resistance to plucking well foundation is presented herein below.
(1) prefabricated open caisson 1, and open caisson 1 borehole wall reserves through hole 11, as root keyhole, prefabricated reinforced concrete column body 4, As root key;
(2) excavate slightly larger than the foundation ditch of open caisson 1 outside dimension in basic engineering position, and lay sand-gravel cushion whole at the end, hole Flat;
(3) open caisson 1 is transferred to foundation ditch;
(4) from open caisson 1 inside, cylinder 4 is inserted the borehole wall to reserve through hole 11, and use pushing tow mode to be pushed up by cylinder 4 In underground layer so that it is insert among the soil layer of open caisson surrounding as root key;
(5) casting concrete between cylinder 4 and through hole 11 gap so that root key is integrally formed with open caisson;
(6) back cover is carried out at open caisson 1 lower end casting concrete;Backfill element soil in described open caisson 1;
(7) bind the circular cushion cap of formation by open caisson top casting concrete, and as the cushion cap on tower body basis;
(8) backfilling plain fill outside open caisson and roll compacting, compacting factor is not less than 0.92, and described plain fill exceeds ground Face more than 350mm.
From above-mentioned work progress it can also be seen that, withdrawal resistance of the present invention is strong, production cost is low, easy construction.

Claims (8)

1. a power transmission tower resistance to plucking well foundation, it is characterised in that: include cylindric open caisson (1), be placed in described open caisson (1) The back cover (2) of lower end, being placed in the capping (3) of described open caisson (1) upper end, the sidewall of described open caisson (1) is provided with many Individual through hole (11), grafting one cylinder (4) in each through hole (11), described cylinder (4) hangs down with open caisson (1) axis Directly.
Basis the most according to claim 1, it is characterised in that: described open caisson (1) by armored concrete prefabricated and Become.
Basis the most according to claim 1, it is characterised in that: described cylinder (4) by armored concrete prefabricated and Become.
Basis the most according to claim 1, it is characterised in that: described back cover (2) is watered by reinforced concrete soil scene Build and form.
Basis the most according to claim 1, it is characterised in that: described capping (3) is watered by reinforced concrete soil scene Build and form.
Basis the most according to claim 1, it is characterised in that: on described cylinder (4) and open caisson (1) sidewall Through hole (11) loose fit, cylinder (4) install in place after, between cylinder (4) and through hole (11) gap, pour coagulation Soil.
Basis the most according to claim 1, it is characterised in that: backfill element soil in described open caisson (1).
Basis the most according to claim 1, it is characterised in that: backfill element soil in described open caisson (1) periphery and grind Pressure compacting, compacting factor is not less than 0.92,350mm above ground level after the earthen backfill of described element.
CN201610316698.7A 2016-05-12 2016-05-12 Anti-pulling open caisson foundation for power transmission tower Pending CN105839661A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610316698.7A CN105839661A (en) 2016-05-12 2016-05-12 Anti-pulling open caisson foundation for power transmission tower

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610316698.7A CN105839661A (en) 2016-05-12 2016-05-12 Anti-pulling open caisson foundation for power transmission tower

Publications (1)

Publication Number Publication Date
CN105839661A true CN105839661A (en) 2016-08-10

Family

ID=56591214

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610316698.7A Pending CN105839661A (en) 2016-05-12 2016-05-12 Anti-pulling open caisson foundation for power transmission tower

Country Status (1)

Country Link
CN (1) CN105839661A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0393925A (en) * 1989-09-06 1991-04-18 Toda Constr Co Ltd Simultaneous construction method of structure above or under ground
CN201809779U (en) * 2010-10-13 2011-04-27 河南省电力勘测设计院 Open caisson foundation of power transmission line iron tower
KR20120132713A (en) * 2011-05-30 2012-12-10 삼성파워텍주식회사 Split concrete foundation structure of transmission tower
CN204676585U (en) * 2015-04-20 2015-09-30 国家电网公司 A kind of transmission line of electricity open caisson Screw Anchor composite foundation
CN205688454U (en) * 2016-05-12 2016-11-16 扬州大学 Power transmission tower resistance to plucking well foundation

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0393925A (en) * 1989-09-06 1991-04-18 Toda Constr Co Ltd Simultaneous construction method of structure above or under ground
CN201809779U (en) * 2010-10-13 2011-04-27 河南省电力勘测设计院 Open caisson foundation of power transmission line iron tower
KR20120132713A (en) * 2011-05-30 2012-12-10 삼성파워텍주식회사 Split concrete foundation structure of transmission tower
CN204676585U (en) * 2015-04-20 2015-09-30 国家电网公司 A kind of transmission line of electricity open caisson Screw Anchor composite foundation
CN205688454U (en) * 2016-05-12 2016-11-16 扬州大学 Power transmission tower resistance to plucking well foundation

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
殷永高: "根式基础、锚碇构思即施工工艺探讨", 《中国公路学会桥梁和结构工程分会2006年全国桥梁学术会议论文集 》 *

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Application publication date: 20160810

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