CN102900094B - Transmission tower plate-type three-rope foundation structure - Google Patents

Transmission tower plate-type three-rope foundation structure Download PDF

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Publication number
CN102900094B
CN102900094B CN201210383544.1A CN201210383544A CN102900094B CN 102900094 B CN102900094 B CN 102900094B CN 201210383544 A CN201210383544 A CN 201210383544A CN 102900094 B CN102900094 B CN 102900094B
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China
Prior art keywords
upper plate
rope
plate
foundation
steel strand
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CN201210383544.1A
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Chinese (zh)
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CN102900094A (en
Inventor
雒亿平
范雪峰
付兵彬
杜鸿
朱文化
邓永婕
夏懿
徐昊亮
杨晶
张中丹
宋汶秦
贾春蓉
张军
杨昌海
余泳
田云飞
孙志宏
魏勇
李玉科
万小花
李麟鹤
韩建锋
梁魁
薛国斌
朱海涛
卢宏达
张琦
丁政中
马国伟
张艳霞
陈兆燕
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State Grid Corp of China SGCC
State Grid Gansu Electric Power Co Ltd
Economic and Technological Research Institute of State Grid Gansu Electric Power Co Ltd
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State Grid Corp of China SGCC
State Grid Gansu Electric Power Co Ltd
Economic and Technological Research Institute of State Grid Gansu Electric Power Co Ltd
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Priority to CN201210383544.1A priority Critical patent/CN102900094B/en
Publication of CN102900094A publication Critical patent/CN102900094A/en
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Abstract

The invention discloses a transmission tower plate-type three-rope foundation structure which comprises an upper plate which is paved on the ground surface and three lower plates which are buried under the ground. The transmission tower plate-type three-rope foundation structure is characterized in that the upper plate and each of the lower plates are respectively connected through a steel twisted rope; the three lower plates are arranged in a transverse straight line manner; the length of the steel twisted rope at the middle part is larger than the lengths of the steel twisted ropes at two sides; and the lengths of the steel twisted ropes at two sides are equal. According to the transmission tower plate-type three-rope foundation structure provided by the invention model, the upper plate is used as a foundation protecting cap and has the advantages that force transmission boundary conditions are complete and clear, physical mechanical properties of various materials are brought into full play, the investment is saved, the safety and the reliability grade are high, the construction is simple and convenient, and the like; when the line foundation earth is poor in physical mechanical property and the up-pull load is large, the security and the reliability of the foundation are greatly improved as three anchor ropes are adopted; and therefore, the foundation structure is applicable to loess regions with large up-pull forces and poor physical mechanical properties of the foundation earth, for example, line foundations of voltage grades more than 330kV.

Description

The board-like three rope foundation structures of transmission tower
Technical field
The present invention is a kind of transmission tower equipment, specifically the basic fixed structure of transmission tower.
Background technology
In heavy thickness Canal in Loess Area, pole and tower foundation mainly adopts " heavy excavation " foundation class, draw and dig spread foundation class, explosion expanded piling foundation class basis." heavy excavation " foundation class means and is embedded in the foundation ditch that digs in advance and the basis of backfill being tamped, it be with the backfill of disturbance is formed the resistance to plucking soil body keep basic on pull out stable.Draw and dig spread foundation class and mean and be poured into machinery or the basis of manually drawing in the native tire that scrapes out with concrete and cage of reinforcement, it be with the resistance to plucking soil body of natural formation keep basis on pull out stable.Explosion expanded piling foundation class means and to be poured into the stub of the bellend in the shaping native tire of explosive expansion basis with concrete and cage of reinforcement, and its resistance to plucking soil body is substantially close to intact natural soil.
The key dimension of " heavy excavation " foundation class determines by its resistance to plucking stability the subject of knowledge and the object of knowledge, in order to pull out the requirement of stability on meeting, must strengthen key dimension, improve foundation cost, simultaneously because spoir is more, also larger to the destruction of environment.Draw and dig spread foundation class and be suitable in the cohesive soil of anhydrous infiltration foundation ditch, simultaneously pile foundation regulation and stipulation, as basis adopts pile foundation, essential bearing stratum need through collapsible loess, and therefore this basis is not suitable for heavy thickness Collapsible Loess District.Explosion expanded piling foundation class difficulty of construction is comparatively large and technique and dimensional gaughing have certain difficulty.
Summary of the invention
In order to solve the problem, the invention provides a kind of board-like three rope foundation structures of transmission tower being applicable to large thick Canal in Loess Area.
Object of the present invention carrys out specific implementation by the following technical programs:
The board-like three rope foundation structures of transmission tower, comprise the lower plate that a upper plate being laid on earth's surface and three are embedded in underground, connect respectively by a steel strand rope between described upper plate and each lower plate, three described lower plates are that yi word pattern is arranged, the length being positioned at middle steel strand rope is greater than the length of the steel strand rope being positioned at both sides, the length of the steel strand rope of both sides is equal, each described steel strand rope outside is between the upper and lower plates provided with a gum cover pipe, the two ends of each described gum cover pipe contact with a lower plate with upper plate respectively, anticorrosive packing is filled with at described glue inside pipe casing, the two ends of described steel strand rope are respectively equipped with an anchor head, are provided with carrying backing plate between the anchor head on top and upper plate, are provided with lower carrying backing plate between the anchor head of bottom and lower plate, be positioned at middle described on carry backing plate upper and have four stone bolt be arranged symmetrically with, described stone bolt runs through upper plate, and is fixedly connected with the cast backing plate being cast in upper plate bottom surface.Described upper plate, lower plate are Reinforced Concrete Materials moulding by casting.
Described upper plate adopts rectangular structure, and the area of upper plate is much larger than the area sum of three lower plates.
The board-like three rope foundation structures of transmission tower provided by the invention, based on upper plate, protective cap uses, having power transmission fringe conditions improves distinct, give full play to the physical and mechanical property of various material, investment reduction, the advantages such as the high and easy construction of safety reliability, when circuit foundation soil physico-mechanical properties is poor, when uplift load is large, three rope foundation structures are compared with single rope can reduce cutting depth with two rope foundation structures, owing to adopting 3 anchor cables, therefore greatly underlying security and reliability is improved, therefore to be applicable to uplift force large on this basis, the Canal in Loess Area of foundation soil physico-mechanical properties difference, as 330kV above line tower foundation.
This foundation structure is flexible foundation, adopts this foundation structure can improve the ability of shaft tower opposing dynamic load; Spoir amount can be reduced simultaneously, preserve the ecological environment; And convenient disassembly, as this basis does not re-use, steel strand directly can be cut off, excavate upper plate, reduce basic projects amount; And double for the load transmission mechanism ground wire that does can be used.This foundation structure load transmission is clear and definite, and structural calculation is easier with construction.Use three anchor cable bases can improve basic reliability, when an anchor cable produces surrender or destroys, other two anchor cables can bear the uplift load on basis, can require that the uplift resistance of every root anchor cable meets the requirement of half uplift load in the design.
Accompanying drawing explanation
According to drawings and embodiments the present invention is described in further detail below.
Fig. 1 is the structure chart of the board-like three rope foundation structures of transmission tower described in the embodiment of the present invention.
Fig. 2 is the earth's surface top view of the board-like three rope foundation structures of transmission tower described in the embodiment of the present invention.
Detailed description of the invention
As shown in Figure 1-2, the board-like three rope foundation structures of transmission tower described in the embodiment of the present invention, comprise the lower plate 2 that a upper plate 1 being laid on earth's surface and three are embedded in underground, connect respectively by a steel strand rope 3 between described upper plate 1 and each lower plate 2, three described lower plates 2 are arranged in yi word pattern, the length being positioned at middle steel strand rope 3 is greater than the length of the steel strand rope 3 being positioned at both sides, the length of the steel strand rope 3 of both sides is equal, each described steel strand rope 3 outside between upper plate 1 and lower plate 2 is provided with a gum cover pipe 4, the two ends of each described gum cover pipe 4 contact with a lower plate 2 with upper plate 1 respectively, anticorrosive packing 5 is filled with in described gum cover pipe 4 inside, the two ends of described steel strand rope 3 are respectively equipped with an anchor head 61,62, are provided with carrying backing plate 71 between the anchor head 61 on top and upper plate 1, are provided with lower carrying backing plate 72 between the anchor head 62 of bottom and lower plate 2, be positioned at middle described on carry backing plate 61 upper and have four stone bolt be arranged symmetrically with 8, described stone bolt 8 runs through upper plate 1, and is fixedly connected with the cast backing plate 9 being cast in upper plate 1 bottom surface.Described upper plate 1, lower plate 2 are Reinforced Concrete Materials moulding by casting.Described upper plate 1 adopts rectangular structure, and the area of upper plate 1 is much larger than the area sum of three lower plates 2.
The board-like three rope foundation structures of transmission tower provided by the invention, based on upper plate, protective cap uses, having power transmission fringe conditions improves distinct, give full play to the physical and mechanical property of various material, investment reduction, the advantages such as the high and easy construction of safety reliability, when circuit foundation soil physico-mechanical properties is poor, when uplift load is large, three rope foundation structures are compared with single rope can reduce cutting depth with two rope foundation structures, owing to adopting 3 anchor cables, therefore greatly underlying security and reliability is improved, therefore to be applicable to uplift force large on this basis, the Canal in Loess Area of foundation soil physico-mechanical properties difference, as 330kV above line tower foundation.
This foundation structure is flexible foundation, adopts this foundation structure can improve the ability of shaft tower opposing dynamic load; Spoir amount can be reduced simultaneously, preserve the ecological environment; And convenient disassembly, as this basis does not re-use, steel strand directly can be cut off, excavate upper plate, reduce basic projects amount; And double for the load transmission mechanism ground wire that does can be used.This foundation structure load transmission is clear and definite, and structural calculation is easier with construction.Use three anchor cable bases can improve basic reliability, when an anchor cable produces surrender or destroys, other two anchor cables can bear the uplift load on basis, can require that the uplift resistance of every root anchor cable meets the requirement of half uplift load in the design.

Claims (2)

1. the board-like three rope foundation structures of transmission tower, comprise the lower plate that a upper plate being laid on earth's surface and three are embedded in underground, it is characterized in that, connect between described upper plate and each lower plate respectively by a steel strand rope, three described lower plates are that yi word pattern is arranged, the length being positioned at middle steel strand rope is greater than the length of the steel strand rope being positioned at both sides, the length of the steel strand rope of both sides is equal, during if do not re-used dismounting, is directly cut off by steel strand, excavate upper plate
Described steel strand rope outside between upper plate and each lower plate is provided with a gum cover pipe, and the two ends of each described gum cover pipe contact with a lower plate with upper plate respectively, are filled with anticorrosive packing at described glue inside pipe casing,
Described upper plate, lower plate are Reinforced Concrete Materials moulding by casting,
The two ends of described steel strand rope are respectively equipped with an anchor head, are provided with carrying backing plate between the anchor head on top and upper plate, are provided with lower carrying backing plate between the anchor head of bottom and lower plate,
Be positioned at middle described on carry backing plate upper and have four stone bolt be arranged symmetrically with, described stone bolt runs through upper plate, and is fixedly connected with the cast backing plate being cast in upper plate bottom surface.
2. the board-like three rope foundation structures of transmission tower as claimed in claim 1, it is characterized in that, described upper plate adopts rectangular structure, and the area of upper plate is greater than the area sum of three lower plates.
CN201210383544.1A 2012-10-11 2012-10-11 Transmission tower plate-type three-rope foundation structure Active CN102900094B (en)

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CN102900094B true CN102900094B (en) 2015-02-04

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105040723B (en) * 2015-07-22 2017-01-25 国家电网公司 Structure for preventing sand backfill and treating concrete pole up-pulling and construction method thereof
CN105442627B (en) * 2016-01-19 2018-09-14 温州电力设计有限公司 A kind of assembled plate rope basis
CN105888356A (en) * 2016-05-11 2016-08-24 成都市东方电力线路构件厂 Iron tower with foundation structure reinforced
CN107227745A (en) * 2017-06-22 2017-10-03 国网浙江省电力公司台州供电公司 A kind of group's anchor cable mat foundation of power transmission tower
CN110528561A (en) * 2019-08-27 2019-12-03 西安理工大学 A kind of transmission line of electricity joint three anchor slab basis fixed structure of plate stem

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101063509A (en) * 2006-04-30 2007-10-31 通用电气公司 Tower adapter, method of producing a tower foundation and tower foundation
KR100946573B1 (en) * 2009-12-08 2010-03-11 파슨스 브링커호프 아시아 리미티드 Steel base with adjusting leveling and construction method using the same
CN201874004U (en) * 2009-09-25 2011-06-22 山东电力集团公司日照供电公司 Foundation employing rock bottom-enlarging anchor pile for overhead power transmission line
CN102277877A (en) * 2010-04-30 2011-12-14 通用电气公司 Apparatus and method for producing a concrete foundation
CN202469390U (en) * 2012-03-19 2012-10-03 宁波浩渤工贸有限公司 Foundation bolt
CN202881967U (en) * 2012-10-11 2013-04-17 甘肃省电力公司电力经济技术研究院 Transmission tower plate type three-cable base structure

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101063509A (en) * 2006-04-30 2007-10-31 通用电气公司 Tower adapter, method of producing a tower foundation and tower foundation
CN201874004U (en) * 2009-09-25 2011-06-22 山东电力集团公司日照供电公司 Foundation employing rock bottom-enlarging anchor pile for overhead power transmission line
KR100946573B1 (en) * 2009-12-08 2010-03-11 파슨스 브링커호프 아시아 리미티드 Steel base with adjusting leveling and construction method using the same
CN102277877A (en) * 2010-04-30 2011-12-14 通用电气公司 Apparatus and method for producing a concrete foundation
CN202469390U (en) * 2012-03-19 2012-10-03 宁波浩渤工贸有限公司 Foundation bolt
CN202881967U (en) * 2012-10-11 2013-04-17 甘肃省电力公司电力经济技术研究院 Transmission tower plate type three-cable base structure

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