CN105421479A - Large-scale wading ring-shaped rigid foundation and construction method thereof - Google Patents

Large-scale wading ring-shaped rigid foundation and construction method thereof Download PDF

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Publication number
CN105421479A
CN105421479A CN201510827477.1A CN201510827477A CN105421479A CN 105421479 A CN105421479 A CN 105421479A CN 201510827477 A CN201510827477 A CN 201510827477A CN 105421479 A CN105421479 A CN 105421479A
Authority
CN
China
Prior art keywords
concrete
well wall
ring
foundation
wall
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
CN201510827477.1A
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Chinese (zh)
Inventor
别业山
徐力
刘俊锋
谭国宏
张金涛
梅新咏
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.)
China Railway Major Bridge Reconnaissance and Design Institute Co Ltd
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China Railway Major Bridge Reconnaissance and Design Institute 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 China Railway Major Bridge Reconnaissance and Design Institute Co Ltd filed Critical China Railway Major Bridge Reconnaissance and Design Institute Co Ltd
Priority to CN201510827477.1A priority Critical patent/CN105421479A/en
Publication of CN105421479A publication Critical patent/CN105421479A/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
    • E02D27/32Foundations for special purposes
    • E02D27/42Foundations for poles, masts or chimneys
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00Foundations as substructures
    • E02D27/32Foundations for special purposes
    • E02D27/52Submerged foundations, i.e. submerged in open water
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2200/00Geometrical or physical properties
    • E02D2200/16Shapes
    • E02D2200/1607Shapes round, e.g. circle
    • E02D2200/1614Shapes round, e.g. circle made from single element
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00Materials
    • E02D2300/0004Synthetics
    • E02D2300/0018Cement used as binder
    • E02D2300/002Concrete
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00Materials
    • E02D2300/0026Metals
    • E02D2300/0029Steel; Iron

Abstract

The invention relates to a large-scale wading ring-shaped rigid foundation and a construction method thereof. An inner well wall is arranged in the position, 20-25 m away from an outer well wall, of the interior of the outer well wall. A sealed ring-shaped body is formed by placing a ring-shaped cover plate on the upper portion of the inner well wall and the upper portion of the outer well wall and pouring ring-shaped bottoming concrete to the lower portion of the inner well wall and the lower portion of the outer well wall. Partition walls are arranged between the inner well wall and the outer well wall. The construction method comprises the steps that 1, after being manufactured in the land or a dock, foundation base section steel shells of steel shell concrete enter the water and are floatingly transported to a scene to be positioned precisely, watering and sinking are conducted, and after a bed is stable, the steel shell concrete is poured; 2, the well walls and the partition walls are heightened through reinforced concrete and sunken through soil sampling, when soil is sunken to a design elevation, bottom clearing is conducted, and the bottoming concrete is poured; and 3, top cover plate concrete is poured, and an overall ring-shaped forced structure is formed. According to the large-scale wading ring-shaped rigid foundation and the construction method thereof, the foundation is designed to be a ring-shaped deeply-buried-type rigid foundation in accordance with a high-rise structure with the characteristics of being large in electric tower foundation horizontal force, bending moment and foundation top surface construction size, and a part with the small stress in the middle is hollowed out skillfully; compared with an ordinary sunk well foundation, a large number of materials are saved, and the integrity, the loaded property and the economy are good.

Description

Large-scale annular rigid basis and the construction method thereof of paddling
Technical field
The present invention relates to a kind of large-scale annular rigid basis and construction method thereof of paddling.
Background technology
Electrical network, when crossing over great rivers or bay, is difficult to because the water surface is wider accomplish that one across leap, needs in water, arrange electric tower.Particularly in THE LOWER YANGTZE VALLEY or marine site, shipping is busy, and waterway classification is higher, and electric tower span must strengthen.The electric tower span planned to build at present reaches 2.6km, and king-tower height reaches 465m, and electric tower bottom size reaches 85 × 85m.Because the depth of water is large compared with dark and basic local scour, basic drift is about 45m; But waters navigation grade is high, the ship power of hitting reaches 1.29 ten thousand tons; Electricity tower height degree 465m, the horizontal force that wind-force causes reaches 9200 tons, the 2500000 tons of rice of moment of flexure at the bottom of tower.Because electric tower adopts steel work, from heavy and light, therefore basic stress feature is that vertical force is little, and horizontal force is large, and moment of flexure is large.According to engineering geological conditions and state-of-the art, basis can adopt multi-column pier foundation and open caisson foundation.According to multi-column pier foundation, because pile foundation drift reaches 45m, basis opposing horizontal loading ability, basic scale is large, less economical.Open caisson foundation is rigid foundation, and opposing horizontal loading ability is strong, but electric tower bottom is of a size of 85 × 85m, and therefore open caisson foundation size is by orecontrolling factor, and non-stress controls, and engineering quantity is large, and economy is not good enough.
Existing common open caisson foundation structure is shown in Fig. 3,4, has two loop partition walls 4 in the borehole wall 1, has the partition wall in the sensing center of circle of several connection boreholes wall, ring-type partition wall.Above the borehole wall by circular cover, be the entirety closed by circular bottom concrete envelope below.
Summary of the invention
The object of the invention is to be intended to propose one for above-mentioned present situation and better can adapt to tall and slender structure, as electric tower foundation loading characteristic, structure stress is reasonable, large-scale annular rigid basis and the construction method thereof of paddling of good economy performance.
The implementation of the object of the invention is, large-scale annular rigid basis of paddling, and in the outer borehole wall, there is the borehole wall at 20-25m place, above inner well wall with annular cover plate, be a ring bodies closed by annular bottom concrete envelope below, have partition wall in the middle of inner well wall;
The inner well wall at coxopodite place and the partition wall 4 of centre adopt steel-shelled concrete, and the inner well wall at all the other places and the partition wall of centre adopt steel concrete.
The construction method on large-scale annular rigid basis of paddling, adopt steel-shelled concrete basic coxopodite box hat land manufacture complete or after dock manufacture transportation by driving accurately locate to scene, sinking of pouring water, after-pouring box hat inner concrete stablized by implantation; The water surface adopts steel concrete carry out the borehole wall and partition wall connects height and sinking of fetching earth, carry out the end clearly after sinking to design altitude, build bottom concrete; Then build lamina tecti concrete, form an integral ring-shaped force structure.
The present invention is according to tall and slender structure, as large in electric tower foundation horizontal force, moment of flexure is large, the feature that basis end face construction size is large, by basic engineering deep embeded type rigid foundation circlewise, cleverly stressed for centre smaller portions are emptied, save material in a large number compared with common open caisson foundation, its globality, stress performance, good economy performance.
Accompanying drawing explanation
Fig. 1 is structure sectional elevation schematic diagram of the present invention,
Fig. 2 is the A-A direction view of Fig. 1,
Fig. 3 is common open caisson foundation structure sectional elevation schematic diagram,
Fig. 4 is the B-B direction view of Fig. 3.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail.
With reference to Fig. 1, Fig. 2, in the outer borehole wall 1 on large-scale annular rigid basis of paddling, there is the borehole wall 6 at 20-25m place, above inner well wall with annular cover plate 3, be a ring bodies closed by annular bottom concrete 2 envelope below, there is partition wall 4 inner well wall centre.
The inner well wall at coxopodite place and the partition wall 4 of centre adopt steel-shelled concrete, vertical height 45m; The inner well wall at all the other places and the partition wall of centre adopt steel concrete, vertical height 29.5m.
The large-scale annular rigid basis height overall 74.5m that paddles, inner well wall thickness is taken as 1.8m according to the size of actual Water And Earth Pressures, the thick 1.2m of partition wall 4, establishes 20 wellholes altogether, single well size 16 × 16m.The thick 5m of bottom concrete 2, the thick 6m of lamina tecti 3.Lamina tecti is arranged 4 suspension columns 5, single suspension column diameter 5m, adjacent suspension column spacing 85m.
Box hat inside and outside wall plate thickness is 10mm, and arrange horizontal truss every 1.5m in the height direction and support and horizontal loops, horizontal truss is connected with wallboard inside and outside box hat by horizontal loops, and horizontal truss adopts ∠ 100 × 8mm angle steel.
Large-scale annular rigid foundation outline of paddling also can be designed to rectangle or polygon as required.
Large-scale construction method of paddling annular rigid basis is, adopt steel-shelled concrete basic coxopodite box hat land or after dock manufacture transportation by driving accurately locate to scene, sinking of pouring water, after-pouring box hat inner concrete stablized by implantation; The water surface adopt steel concrete carry out the borehole wall and partition wall connects height, and sinking of fetching earth, carry out the end clearly after sinking to design altitude, build bottom concrete; Then build lamina tecti concrete, form an integral ring-shaped force structure.

Claims (6)

1. large-scale annular rigid basis of paddling, is characterized in that: in the outer borehole wall, there is the borehole wall at 20-25m place, above inner well wall with annular cover plate, be a ring bodies closed by annular bottom concrete envelope below, have partition wall in the middle of inner well wall;
The inner well wall at coxopodite place and the partition wall of centre adopt steel-shelled concrete, and the inner well wall at all the other places and the partition wall of centre adopt steel concrete.
2. large-scale annular rigid basis of paddling according to claim 1, is characterized in that: steel-shelled concrete vertical height 45m, steel concrete vertical height 29.5m.
3. large-scale annular rigid basis of paddling according to claim 1, is characterized in that: the thick 1.8m of inner well wall, partition wall (4) thick 1.2m, establishes 20 wellholes altogether.
4. large-scale annular rigid basis of paddling according to claim 1, is characterized in that: bottom concrete (2) thick 5m, lamina tecti (3) thick 6m; Lamina tecti is arranged 4 suspension columns (5), adjacent suspension column spacing 85m.
5. large-scale annular rigid basis of paddling according to claim 1, is characterized in that: box hat inside and outside wall thickness of slab 10mm, and arrange horizontal truss every 1.5m in the height direction and support and horizontal loops, horizontal truss is connected with wallboard inside and outside box hat by horizontal loops.
6. the construction method on large-scale annular rigid basis of paddling according to claim 1, it is characterized in that: adopt steel-shelled concrete basic coxopodite box hat land manufacture complete or after dock manufacture transportation by driving accurately locate to scene, pour water sinking, after-pouring box hat inner concrete stablized by implantation; The water surface adopts steel concrete carry out the borehole wall and partition wall connects height and sinking of fetching earth, carry out the end clearly after sinking to design altitude, build bottom concrete; Then build lamina tecti concrete, form an integral ring-shaped force structure.
CN201510827477.1A 2015-11-24 2015-11-24 Large-scale wading ring-shaped rigid foundation and construction method thereof Pending CN105421479A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510827477.1A CN105421479A (en) 2015-11-24 2015-11-24 Large-scale wading ring-shaped rigid foundation and construction method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510827477.1A CN105421479A (en) 2015-11-24 2015-11-24 Large-scale wading ring-shaped rigid foundation and construction method thereof

Publications (1)

Publication Number Publication Date
CN105421479A true CN105421479A (en) 2016-03-23

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106088155A (en) * 2016-07-22 2016-11-09 中交航局第二工程有限公司 Box hat immersed tube tunnel tube coupling prefabricated transportation by driving fitting-out technique
CN107059914A (en) * 2017-06-19 2017-08-18 中铁第四勘察设计院集团有限公司 A kind of ring-type for being used for shallow overburden or naked rock area in water is embedded to set basis

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001207948A (en) * 2000-01-21 2001-08-03 Pc Bridge Co Ltd Composite foundation structure for marine installation type wind power generation and its constructing method
CN101962957A (en) * 2010-09-30 2011-02-02 中铁大桥勘测设计院有限公司 Sunk well structure and construction method thereof
CN202280067U (en) * 2011-10-13 2012-06-20 中国化学工程第十三建设有限公司 Dual-wall concrete sunk well
CN202706049U (en) * 2012-07-20 2013-01-30 天津津滨石化设备有限公司 Reinforced concrete basin open caisson

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001207948A (en) * 2000-01-21 2001-08-03 Pc Bridge Co Ltd Composite foundation structure for marine installation type wind power generation and its constructing method
CN101962957A (en) * 2010-09-30 2011-02-02 中铁大桥勘测设计院有限公司 Sunk well structure and construction method thereof
CN202280067U (en) * 2011-10-13 2012-06-20 中国化学工程第十三建设有限公司 Dual-wall concrete sunk well
CN202706049U (en) * 2012-07-20 2013-01-30 天津津滨石化设备有限公司 Reinforced concrete basin open caisson

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106088155A (en) * 2016-07-22 2016-11-09 中交航局第二工程有限公司 Box hat immersed tube tunnel tube coupling prefabricated transportation by driving fitting-out technique
CN107059914A (en) * 2017-06-19 2017-08-18 中铁第四勘察设计院集团有限公司 A kind of ring-type for being used for shallow overburden or naked rock area in water is embedded to set basis

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Application publication date: 20160323