CN107059914A - A kind of ring-type for being used for shallow overburden or naked rock area in water is embedded to set basis - Google Patents

A kind of ring-type for being used for shallow overburden or naked rock area in water is embedded to set basis Download PDF

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Publication number
CN107059914A
CN107059914A CN201710464778.1A CN201710464778A CN107059914A CN 107059914 A CN107059914 A CN 107059914A CN 201710464778 A CN201710464778 A CN 201710464778A CN 107059914 A CN107059914 A CN 107059914A
Authority
CN
China
Prior art keywords
open caisson
water
ring
type
prefabricated
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
CN201710464778.1A
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Chinese (zh)
Inventor
严爱国
文望青
王鹏宇
崔苗苗
史娣
尹书军
张晓江
罗春林
周继
李的平
李桂林
张�杰
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 Siyuan Survey and Design Group Co Ltd
Original Assignee
China Railway Siyuan Survey and Design Group 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 Siyuan Survey and Design Group Co Ltd filed Critical China Railway Siyuan Survey and Design Group Co Ltd
Priority to CN201710464778.1A priority Critical patent/CN107059914A/en
Publication of CN107059914A publication Critical patent/CN107059914A/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
    • E02D23/00Caissons; Construction or placing of caissons
    • E02D23/02Caissons able to be floated on water and to be lowered into water in situ
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00Foundations as substructures
    • E02D27/01Flat foundations
    • E02D27/04Flat foundations in water or on quicksand
    • 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

Abstract

The invention discloses a kind of embedded setting basis of ring-type for being used for shallow overburden or naked rock area in water, it includes foundation trench, prefabricated open caisson and the embedding rock concrete being located on water-bed basement rock, the bottom of prefabricated open caisson is located in foundation trench, and embedding rock concrete is filled between prefabricated open caisson and foundation trench;Foundation trench is the annular groove extended straight down;The shape that annular groove is intercepted along level cross-sectionn matches with prefabricated open caisson along the shape that level cross-sectionn is intercepted.The present invention is simple in construction, easy for operation, it has fully absorbed the advantage and disadvantage of traditional foundation in water, by set on water-bed basement rock annular groove, using prefabricated double-wall steel open caisson and after pour embedding rock concrete technology measure, solve large-diameter deep drilling collection multi-column pier foundation and well foundation and a series of problems faced applied in shallow overburden regional and naked rock area.

Description

A kind of ring-type for being used for shallow overburden or naked rock area in water is embedded to set basis
Technical field
The present invention relates to base form is set in a kind of water, belong to technical field of bridge engineering, and in particular to a kind of main The embedded setting basis of the ring-type of shallow overburden or naked rock area that build foundation in water applied to river, lake, sea etc..
Background technology
With the rapid development of the national economy, transport development demand surges, build both at home and abroad and prepare to build it is big Type bridge is more and more, and with the appearance of bridge spanning the sea, span of bridge is increasing.These length, big bridge majority are built in On the anxious big rivers of the depth of water, stream or bad environments sea, often run into rock stratum embedding multiple compared with deep, exposed bedrock, geological conditions The problem such as miscellaneous, is highly detrimental to bridge construction, and the difficulty that basis is built is also bigger.Therefore typically realized using foundation in water form Long, big bridge on the anxious big rivers of the depth of water, stream or bad environments marine construction.
Foundation in water form conventional at present mainly has large-diameter deep drilling collection multi-column pier foundation and a well foundation, but its Shallow overburden is regional and the application of naked rock area faces problems with:
1st, large-diameter deep drilling collection multi-column pier foundation, key dimension is huge, structure to the change in riverbed, the changing for condition such as wash away Become, adaptability is poor;Substantially, the accurate difficulty in computation of pile foundation is larger for efficiency of pile groups.Operation platform, guiding need to be separately set during construction Many complicated technologies such as frame, steel cofferdam, operation at sea tedious process, activity duration are long.
2nd, conventional arrangement well foundation, it is necessary first to carry out underwater demolition, scarfing cinder at the bottom, opened the bottom with big machinery Supporting course is dug, taper type rock pit is formed, workload is excavated greatly, levelling difficulty.
3rd, regional for waves whipped up by the wind rolled turbulently, open caisson decentralization is accurately positioned difficulty;After open caisson decentralization in place, protection against erosion around open caisson (river bottom protection) layer constructional difficulties and construction workload is big.
A kind of construction method of pile foundation bucket foundation is for example disclosed in Chinese invention patent CN102644293B.The base Plinth is made up of staving and pile foundation, and staving includes upper wall body, lower wall, cover plate, upper spacer, lower clapboard.Lower wall top sets lid Plate, inside sets lower clapboard, forms lower wall cavity.Upper wall body is set on cover plate, and it is empty that inside is provided with wall body in upper spacer, formation Chamber.The aqueous vapor valve and filling concrete valve of the upper wall body cavity of connection and lower wall cavity are set on cover plate.Staving is constructed in make-up base After the completion of carry out sinking, by water filling in upper wall body cavity and lower wall cavity water suction be main sinking means, when staving reaches Bottom concrete and bucket inner concrete are poured in lower wall cavity after to design depth of penetration, stake and staving connection is realized.Though The right invention can be used for deep-water bridge foundation of constructing, still, and its well foundation excacation amount is big, work waterborne when installing open caisson Industry tedious process, activity duration are long.
The content of the invention
In order to solve the above technical problems, being used for shallow overburden or the ring in naked rock area in water present invention employs such a Shape is embedded to set basis, and its intensity is high, rigidity is big, design and construction is convenient.
The invention discloses a kind of embedded setting basis of ring-type for being used for shallow overburden or naked rock area in water, including position In the foundation trench on water-bed basement rock, prefabricated open caisson and embedding rock concrete, the bottom of prefabricated open caisson is located in foundation trench, prefabricated open caisson and base Embedding rock concrete is filled between groove;Foundation trench is the annular groove extended straight down;Annular groove is intercepted along level cross-sectionn Shape match with prefabricated open caisson along the shape that level cross-sectionn is intercepted.
In a kind of preferred embodiment of the present invention, annular groove includes vertical inner wall, vertical outer wall and horizontal bottom; Vertical inner wall and vertical outer wall are arranged vertically both with respect to horizontal bottom.
In a kind of preferred embodiment of the present invention, annular groove along being shaped as of intercepting of level cross-sectionn it is circular, Oval ring-type or polygon ring-type.
In a kind of preferred embodiment of the present invention, prefabricated open caisson is included outside the open caisson inwall that is parallel to each other and open caisson Wall;Reinforcement is provided between open caisson inwall and open caisson outer wall.
In a kind of preferred embodiment of the present invention, top horizontal support is additionally provided with the top of prefabricated open caisson;Top Horizontal support includes being mutually perpendicular to the first support group and the second support group of arrangement;The two ends of first support group and the second support group Two ends it is affixed with open caisson inwall.
In a kind of preferred embodiment of the present invention, reinforcement includes horizontal radial support and horizontal support brace;Water Flat radial support along prefabricated open caisson circumferentially;Horizontal support brace is connected between horizontal radial support.
In a kind of preferred embodiment of the present invention, filled with embedding between the open caisson inwall of vertical inner wall and prefabricated open caisson Rock concrete;Embedding rock concrete is filled between vertical open caisson outer wall and the open caisson outer wall of prefabricated open caisson.
In a kind of preferred embodiment of the present invention, annular groove is coaxially arranged with prefabricated open caisson.
In a kind of preferred embodiment of the present invention, prefabricated open caisson along being shaped as of intercepting of level cross-sectionn it is circular, Oval ring-type or polygon ring-type.
In a kind of preferred embodiment of the present invention, the spacing between vertical inner wall and vertical outer wall is more than prefabricated open caisson Wall thickness.
The beneficial effects of the invention are as follows:The present invention is simple in construction, easy for operation, and it has fully absorbed base in traditional water The advantage and disadvantage of plinth, by water-bed basement rock set annular groove, using prefabricated double-wall steel open caisson and after pour embedding rock concrete skill Art measure, solves large-diameter deep drilling collection multi-column pier foundation and well foundation and is faced in the regional and naked rock area application of shallow overburden A series of problems, its advantage is mainly reflected in following several respects:
1st, the present invention is by using prefabricated double-wall steel open caisson so that caisson structure is compact, globality and stability are good, stress Clearly, structure design is facilitated;The forms such as shape circle, polygon, ellipse by designing double-wall steel open caisson cross section are realized The stable construction on basis is set under various construction environments.
2nd, underwater construction process of the invention is few, construction technology is simple, and construction risk is low, it is only necessary to the shallow overburden in water Or the annular recess of definite shape is excavated on the basement rock in naked rock area, you can the rapid positioning sinking of open caisson is realized, is set simultaneously Open caisson can use land fabrication, and transportation by driving to job site disposably sinks to design specified location, will a large amount of live aquatic works Change into prefabrication on the bank.
3rd, water-bed to excavate that workload is small, building materials consumption is few, construction cost is low.Only need using groover in Rock Excavate annular foundation trench, it is not necessary to which large area excavates rock pit, bottom excavation workload is small, and construction cost is low.
4th, well sinking positioning precision is high.The shape that the present invention is intercepted along level cross-sectionn by designing annular groove with it is pre- Open caisson processed matches along the shape that level cross-sectionn is intercepted so that the annular foundation trench that seabed is set can aid in open caisson to be accurately positioned (annular groove can play rear on earth below spacing guide effect, annular groove need to only finely tune so that annular in sinking watching Groove is coaxially arranged with prefabricated open caisson, and the construction for setting basis can be quickly and efficiently realized after the completion of then subsequently pouring).
5th, protection against erosion (river bottom protection) layer easy construction around open caisson, workload is small.Open caisson is accurately transferred to annular foundation trench bottom Afterwards, pour embedding rock concrete, it is not necessary to which protection against erosion (river bottom protection) work is additionally set between prefabricated double-wall steel open caisson and ring-type foundation trench Journey..
Brief description of the drawings
Fig. 1, which is that a kind of ring-type for being used for shallow overburden or naked rock area in water of the embodiment of the present invention is embedded, sets basis Structural representation;
Fig. 2, which is that a kind of ring-type for being used for shallow overburden or naked rock area in water of the embodiment of the present invention is embedded, sets basis Sectional view;
Fig. 3, which is that a kind of ring-type for being used for shallow overburden or naked rock area in water of the embodiment of the present invention is embedded, sets basis Foundation trench structural representation;
Fig. 4, which is that a kind of ring-type for being used for shallow overburden or naked rock area in water of the embodiment of the present invention is embedded, sets basis Foundation trench structural representation (vertical view);
Fig. 5, which is that a kind of ring-type for being used for shallow overburden or naked rock area in water of the embodiment of the present invention is embedded, sets basis Prefabricated open caisson (is located in foundation trench) sectional schematic diagram;
Fig. 6, which is that a kind of ring-type for being used for shallow overburden or naked rock area in water of the embodiment of the present invention is embedded, sets basis Prefabricated open caisson (top) sectional schematic diagram;
In figure:1- foundation trenches, 2- prefabricated open caissons, the embedding rock concrete of 3-, 1.1- vertical inner walls, the vertical outer walls of 1.2-, 1.3- water Planar base surface, 2.1- open caisson inwalls, 2.2- open caisson outer walls, 2.3- reinforcements, 2.4- top horizontal supports, the supports of 2.4-1- first Group, 2.4-2- the second support groups, the support of 2.3-1- horizontal radials, 2.3-2- horizontal support braces, A- basement rock.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, not For limiting the present invention.
Set by a kind of description of the invention ring-type for being used for shallow overburden or naked rock area in water shown in the drawings is embedded The structural representation for putting basis understands that the present invention is sets base form in a kind of water, and being mainly used in river, lake, sea etc. will repair Build shallow overburden (naked rock) area of deep water foundation, its foundation trench 1 for including being located on the basement rock of the bottom (shown in accompanying drawing for ring-type Foundation trench, but can be according to different waters and the horizontal cross-sectional shapes of the change foundation trench of geographical environment during practice of construction), ring-type Foundation trench is to excavate out the ring-type foundation ditch for meeting projected depth on rock stratum by groover;Prefabricated open caisson 2 (can be prior art In double-wall steel open caisson) and embedding rock concrete 3, the bottom of prefabricated open caisson 2 is installed in foundation trench 1, prefabricated open caisson 2 and foundation trench 1 it Between be filled with embedding rock concrete 3;Foundation trench 1 is the annular groove extended straight down;Annular groove is intercepted along level cross-sectionn Shape matches with prefabricated open caisson 2 along the shape that level cross-sectionn is intercepted, and (annular groove in the present invention not refers in particular to specification Toroidal cavity in accompanying drawing, as long as the groove is annular along the horizontal cross sectional geometry perpendicular to its axis);The present invention is logical Crossing annular groove and the form fit of prefabricated open caisson 2 realizes the quick positioning and sinking of prefabricated open caisson 2, while recessed using annular The reasonable design of groove shape so that setting basis of the invention goes for various operating modes.Annular groove includes vertical inner wall 1.1st, vertical outer wall 1.2 and horizontal bottom 1.3, vertical inner wall 1.1 and vertical outer wall 1.2 are coaxial and are arranged parallel to;Vertically Inwall 1.1 and vertical outer wall 1.2 are arranged vertically both with respect to horizontal bottom 1.3, vertical inner wall 1.1 and vertical outer wall 1.2 and Horizontal bottom 1.3 defines the ring-type foundation trench for installing prefabricated open caisson 2;Annular groove is along being shaped as that level cross-sectionn is intercepted Circular, oval ring-type or polygon ring-type.Prefabricated open caisson 2 includes the open caisson inwall 2.1 and open caisson outer wall 2.2 being parallel to each other; Reinforcement 2.3 is provided between open caisson inwall 2.1 and open caisson outer wall 2.2;The top of prefabricated open caisson 2 is additionally provided with top water and supported Frame 2.4;Top horizontal support 2.4 includes the first support group 2.4-1 and the second support group 2.4-2 for being mutually perpendicular to arrangement;First Support group 2.4-1 two ends and the second support group 2.4-2 two ends are affixed with open caisson inwall 2.1 (being in " # " shape in figure).Plus Strengthening tendons 2.3 includes horizontal radial and supports 2.3-1 and horizontal support brace 2.3-2;Horizontal radial supports 2.3-1 along prefabricated open caisson 2 Circumferentially;Horizontal support brace 2.3-2 is connected between horizontal radial support 2.3-1;Vertical inner wall 1.1 and prefabricated open caisson Embedding rock concrete 3 is filled between 2 open caisson inwall 2.1;The open caisson outer wall 2.2 of vertical open caisson outer wall 1.2 and prefabricated open caisson 2 it Between be filled with embedding rock concrete 3.Prefabricated open caisson 2 is shaped as circular, oval ring-type or polygon along what level cross-sectionn was intercepted Ring-type;Spacing between vertical inner wall 1.1 and vertical outer wall 1.2 is more than the wall thickness of prefabricated open caisson 2.
During using the present invention, dock manufacture assembling on the coast first, manufacture method is with conventional steel structure sinking well basis, each portion / pass through welding assembly;;Secondly, the ring-type foundation ditch for meeting projected depth is excavated out on rock stratum by large-scale grooving ship; Then above after the completion of open caisson manufacture by large ship transportation by driving to ring-type foundation trench;Finally when open caisson is accurately transferred to rock foundation trench Behind bottom, embedding rock concrete is poured between prefabricated open caisson and ring-type foundation trench, the embedded setting basis of ring-type is formed;Above step is applied Bottom concrete, open caisson inner concrete, the construction of open caisson cover plate are carried out after the completion of work again, construction method is with conventional well foundation.
The unfavorable factor when present invention reduces the Bridge Construction across great rivers and bay straits as far as possible is (at such as bridge site The depth of water, tide are anxious, shipping is frequent) interference to construction operation, set using land fabrication basic components and then directly and apply in water A large amount of live aquatic works are changed into prefabrication on the bank by work, are not only greatly reduced constructional difficulties and are accelerated construction speed.
Present invention can apply to shallow overburden or the naked rock area that river, lake, sea etc. will build foundation in water, it can not only meet The demand of bridge foundation structure stress, durability, its economy and exploitativeness are also superior to base form conventional at present.
It should be appreciated that the embodiment of the present invention is these are only, but protection scope of the present invention is not limited to In this, any those skilled in the art disclosed herein technical scope in, the change that can readily occur in or replace Change, should all be included within the scope of the present invention.

Claims (10)

1. a kind of ring-type for being used for shallow overburden or naked rock area in water is embedded to set basis, including on water-bed basement rock Foundation trench (1), prefabricated open caisson (2) and embedding rock concrete (3), the bottom of the prefabricated open caisson (2) are located in the foundation trench (1), institute State and the embedding rock concrete (3) is filled between prefabricated open caisson (2) and the foundation trench (1);It is characterized in that:The foundation trench (1) For the annular groove extended straight down;Shape and the prefabricated open caisson (2) that the annular groove is intercepted along level cross-sectionn Match along the shape that level cross-sectionn is intercepted.
2. a kind of ring-type for being used for shallow overburden or naked rock area in water according to claim 1 is embedded to set basis, It is characterized in that:The annular groove includes vertical inner wall (1.1), vertical outer wall (1.2) and horizontal bottom (1.3);It is described perpendicular Straight inwall (1.1) and the vertical outer wall (1.2) are arranged vertically both with respect to the horizontal bottom (1.3).
3. it is according to claim 1 or 2 it is a kind of be used for water in shallow overburden or naked rock area the embedded setting base of ring-type Plinth, it is characterised in that:The annular groove is shaped as circular, oval ring-type or many side rings along what level cross-sectionn was intercepted Shape.
4. a kind of ring-type for being used for shallow overburden or naked rock area in water according to claim 1 is embedded to set basis, It is characterized in that:The prefabricated open caisson (2) includes the open caisson inwall (2.1) and open caisson outer wall (2.2) being parallel to each other;The open caisson Reinforcement (2.3) is provided between inwall (2.1) and the open caisson outer wall (2.2).
5. a kind of ring-type for being used for shallow overburden or naked rock area in water according to claim 4 is embedded to set basis, It is characterized in that:Top horizontal support (2.4) is additionally provided with the top of the prefabricated open caisson (2);The top horizontal support (2.4) the first support group (2.4-1) and the second support group (2.4-2) for being mutually perpendicular to arrangement are included;The first support group The two ends of (2.4-1) and the two ends of the second support group (2.4-2) are affixed with the open caisson inwall (2.1).
6. a kind of ring-type for being used for shallow overburden or naked rock area in water according to claim 4 is embedded to set basis, It is characterized in that:The reinforcement (2.3) includes horizontal radial support (2.3-1) and horizontal support brace (2.3-2);The water Flat radial support (2.3-1) along the prefabricated open caisson (2) circumferentially;It is affixed between the horizontal radial support (2.3-1) There is the horizontal support brace (2.3-2).
7. a kind of ring-type for being used for shallow overburden or naked rock area in water according to claim 2 is embedded to set basis, It is characterized in that:Mixed between the vertical inner wall (1.1) and the open caisson inwall (2.1) of the prefabricated open caisson (2) filled with embedding rock Solidifying soil (3);Mixed between the vertical open caisson outer wall (1.2) and the open caisson outer wall (2.2) of the prefabricated open caisson (2) filled with embedding rock Solidifying soil (3).
8. a kind of ring-type for being used for shallow overburden or naked rock area in water according to claim 2 is embedded to set basis, It is characterized in that:The annular groove and the prefabricated open caisson (2) are coaxially arranged.
9. a kind of ring-type for being used for shallow overburden or naked rock area in water according to claim 1 is embedded to set basis, It is characterized in that:The prefabricated open caisson (2) is shaped as circular, oval ring-type or many side rings along what level cross-sectionn was intercepted Shape.
10. a kind of ring-type for being used for shallow overburden or naked rock area in water according to claim 2 is embedded to set basis, It is characterized in that:Spacing between the vertical inner wall (1.1) and the vertical outer wall (1.2) is more than the prefabricated open caisson (2) Wall thickness.
CN201710464778.1A 2017-06-19 2017-06-19 A kind of ring-type for being used for shallow overburden or naked rock area in water is embedded to set basis Pending CN107059914A (en)

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CN201710464778.1A CN107059914A (en) 2017-06-19 2017-06-19 A kind of ring-type for being used for shallow overburden or naked rock area in water is embedded to set basis

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710464778.1A CN107059914A (en) 2017-06-19 2017-06-19 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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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO20171829A1 (en) * 2017-11-17 2019-05-20 Comrod As Method of forming a free space for a mast element.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO20171829A1 (en) * 2017-11-17 2019-05-20 Comrod As Method of forming a free space for a mast element.
NO344819B1 (en) * 2017-11-17 2020-05-04 Comrod As Method for creating a clearance for a mast element in a ground.

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