CN107354946A - A kind of supporting construction of encorbelmenting for foundation pit steel support - Google Patents
A kind of supporting construction of encorbelmenting for foundation pit steel support Download PDFInfo
- Publication number
- CN107354946A CN107354946A CN201710703106.1A CN201710703106A CN107354946A CN 107354946 A CN107354946 A CN 107354946A CN 201710703106 A CN201710703106 A CN 201710703106A CN 107354946 A CN107354946 A CN 107354946A
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- China
- Prior art keywords
- coupling beam
- steel
- encorbelmenting
- stand column
- bracing members
- 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.)
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 85
- 239000010959 steel Substances 0.000 title claims abstract description 85
- 238000010276 construction Methods 0.000 title claims abstract description 29
- 230000008878 coupling Effects 0.000 claims abstract description 58
- 238000010168 coupling process Methods 0.000 claims abstract description 58
- 238000005859 coupling reaction Methods 0.000 claims abstract description 58
- 239000000725 suspension Substances 0.000 claims abstract description 4
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 238000009412 basement excavation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Foundations (AREA)
Abstract
The invention discloses a kind of supporting construction of encorbelmenting for foundation pit steel support, it includes：It is vertically arranged in foundation ditch and perpendicular to the stand column pile for the bracing members being respectively set up in parallel；The steel coupling beam being fixedly mounted through the stand column pile and its middle part with stand column pile, its both ends stretches out in the stand column pile and forms cantilever design, and the steel coupling beam be arranged at below each bracing members and with each bracing members traversed by, to be supported to each bracing members；And more drag-lines, one end of each drag-line is fixedly connected with the position being located in stand column pile above steel coupling beam, the other end is each individually fixed in the diverse location on two cantilever ends of steel coupling beam, and the support of encorbelmenting to steel coupling beam is realized in a manner of this is with steel coupling beam formation oblique pull suspension cable.Steel coupling beam and the lattice column in stand column pile are connected by the supporting construction of encorbelmenting of the present invention using multiple zips, and encorbelmenting for long length can be realized in the case where not increasing stand column pile, reliable and stable support is formed to more bracing members.
Description
Technical field
The invention belongs to base pit engineering technical field, and in particular to a kind of supporting construction of encorbelmenting for foundation pit steel support.
Background technology
In Metro station excavation engineering, bracing members are often designed and needed as a kind of conventional supporting member, its stability
The key factor of consideration.Generally, can be vertical by increasing in bracing members stability deficiency to ensure bracing members stability
The vertical supporting system of stanchion and steel coupling beam composition meets bracing members stability requirement, that is, sets stand column pile and lattice column, will
Firm coupling beam is erected on lattice column and with this cross-brace bracing members, keeps it stable.
Above-mentioned support scheme usually occurs that steel coupling beam is encorbelmented the situations of bracing members, i.e. lattice column two in design and construction
The steel coupling beam at end forms cantilever design, and bracing members are arranged on the cantilever of the steel coupling beam.By steel coupling beam inherently safe and stably
The requirement of property, steel coupling beam cantilever span be not easy it is long, typically no more than 2m, and the single bracing members that can only encorbelment.To overcome
Drawbacks described above, common solution method are in one end increase stand column pile of encorbelmenting, and reduce cantilever span, still, this increase column
On the one hand the scheme of stake adds engineering cost and construction period, on the other hand, excessive stand column pile is unfavorable for base in foundation ditch
The excavation operation in hole, and there is also problem for the assembly connection between excessive stand column pile or lattice column and steel coupling beam.Therefore, have
Necessity proposes a kind of supporting construction of encorbelmenting suitable for foundation pit steel support, the defects of to overcome existing supporting construction to bring.
The content of the invention
For the disadvantages described above or Improvement requirement of prior art, the invention provides a kind of encorbelmenting for foundation pit steel support
Supporting construction, it is improved and optimizated by structure, and steel coupling beam and the lattice column in stand column pile are connected using multiple zips,
The structure type of similar suspension bridge is formed, so as to realize encorbelmenting for long length in the case where not increasing stand column pile, to more
More bracing members form reliable and stable support, avoid traditional foundation ditch that the stability hidden danger of support and excessive stand column pile are brought of encorbelmenting
Construction trouble and assembly connection problem.
To achieve the above object, according to one aspect of the present invention, there is provided a kind of support of encorbelmenting for foundation pit steel support
Structure, it is characterised in that including：
It is vertically arranged in foundation ditch and perpendicular to the stand column pile for the bracing members being respectively set up in parallel；
Steel coupling beam, it is fixedly mounted through the stand column pile and its middle part with stand column pile, and its both ends stretches out in the column
Stake simultaneously forms cantilever design, and the steel coupling beam be arranged at below each bracing members and with each bracing members traversed by, to each bracing members
It is supported；And
Drag-line, it is more, and one end of each drag-line is fixedly connected with the position being located in stand column pile above steel coupling beam, separately
One end is each individually fixed in the diverse location on two cantilever ends of steel coupling beam, real in a manner of this is with steel coupling beam formation oblique pull suspension cable
Now to the support of encorbelmenting of steel coupling beam.
As a further improvement on the present invention, more than two bracing members are supported by each cantilever end of steel coupling beam.
As a further improvement on the present invention, it is provided with drawing between any two bracing members on each cantilever end of steel coupling beam
Rope.
As a further improvement on the present invention, the drag-line is steel strand wires.
As a further improvement on the present invention, the drag-line is connected by fixed angle steel with steel coupling beam.
As a further improvement on the present invention, the drag-line is connected by fixed angle steel with stand column pile.
As a further improvement on the present invention, the stand column pile upper end is provided with lattice column, the steel coupling beam and the lattice
Structure post is fixedly mounted.
As a further improvement on the present invention, shown steel coupling beam is vertically arranged with each bracing members.
In general, by the contemplated above technical scheme of the present invention compared with prior art, have below beneficial to effect
Fruit：
(1) supporting construction of encorbelmenting of the invention, it leads to its cantilever end by setting drag-line to the both ends cantilever of steel coupling beam
Cross drag-line and stand column pile fixed strain, use for reference the principle of cable-stayed bridge stress, vertical load load being converted into stand column pile, most
The bearing capacity for the performance stand column pile changed greatly, not only considerably increases the cantilever span of steel coupling beam, while it is more with steel branch to encorbelment
Support；
(2) supporting construction of encorbelmenting of the invention, solves the problems, such as that steel coupling beam cantilever span is small, optimizes the cloth of stand column pile
Put, the principle for using for reference cable-stayed bridge has played the vertical bearing capacity of stand column pile to greatest extent, and reliable in quality, construction is convenient, peace
It is complete economical, there are all engineerings of stand column pile support bracing members suitable for foundation ditch.
Brief description of the drawings
Fig. 1 is the overlooking the structure diagram of the supporting construction of encorbelmenting of one embodiment of the invention；
Fig. 2 is diagrammatic cross-section of the supporting construction along A-A directions of encorbelmenting in Fig. 1；
In all of the figs, same reference represents identical technical characteristic, is specially：1- stand column pile, 2- lattices
Post, 3- steel coupling beams, 4- bracing members, 5- drag-lines, 6- fix angle steel.
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 the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
In addition, as long as technical characteristic involved in each embodiment of invention described below is each other not
Conflict can is formed to be mutually combined.
Fig. 1 is the overlooking the structure diagram of the supporting construction of encorbelmenting of one embodiment of the invention；Fig. 2 is encorbelmenting in Fig. 1
Diagrammatic cross-section of the supporting construction along A-A directions, wherein 1- stand column pile, 2- lattice columns, 3- steel coupling beams, 4- bracing members, 5- drag-lines,
6- fixes angle steel.
As illustrated in fig. 1 and 2, the supporting construction of encorbelmenting for foundation pit steel support of the embodiment of the present invention, it includes stand column pile
1st, steel coupling beam 3 and drag-line 5.Wherein, stand column pile 1 is vertically arranged in foundation ditch, and perpendicular to being disposed in parallel on foundation ditch absolute altitude face
Each bracing members 4.
In a preferred embodiment, the top of stand column pile 1 sets lattice column 2, and it is similarly vertical direction arrangement, with this from base
Cheat it is protruding under on bracing members 4, for the pillar as steel coupling beam 3.
As illustrated in fig. 1 and 2, steel coupling beam 3 passes through lattice column 2, and middle part and the lattice column 2 of lattice column 2 are fixedly mounted, steel coupling beam
3 both ends stretch out in lattice column 2 and form cantilever design (or being cantilevered structure).The steel coupling beam 3 is in strip, positioned at each steel branch
The lower section of support 4, and its upper surface contacts with each bottom surface of bracing members 4 and intersected, and is preferably mutually perpendicular to, to enter to each bracing members 4
Row support.
As illustrated in fig. 1 and 2, more than two bracing members are supported by each cantilever end of steel coupling beam 3, i.e., each cantilever end
On have at least two bracing members being set up in parallel, such as two, three, four, or more.
For preferably stable support, the supporting construction in this programme also includes more drag-lines 5, and drag-line is preferably steel strand
Line, naturally it is also possible to be the various ropes or other elements for meeting corresponding tensile strength.One end of each drag-line 5 is consolidated with lattice column
Fixed, fixing point is located at the top of steel coupling beam 3, pulling force, drag-line quantity and the cantilever design that its specific height is born according to drag-line
Bracing members quantity supported etc. is calculated.
The other end of drag-line 5 is fixedly connected with the cantilever end of steel coupling beam 3, in this way by steel coupling beam 3 and drag-line 5 and column
The similar stayed bridge structure of the composition of stake 1, so as to effectively supporting steel coupling beam, the stress of transmission steel coupling beam 3, so as to effectively
Support more bracing members 4.
In a preferred embodiment, the quantity of drag-line 5 is even number root, at least two, or four, the six roots of sensation, eight
Root or more even number root, particular number determine according to factors such as the length of cantilever end, bracing members quantity.More preferably, both ends
The quantity of drag-line 5 is identical and is symmetrical arranged.
In preferred embodiment, the position between any two bracing members 4 on each cantilever end of steel coupling beam 3 is all connected with
There is drag-line 5.In a more preferred embodiment, the outside of the outermost bracing members 4 of each cantilever end is also connected with drag-line 5.
The supporting construction of encorbelmenting of this programme, by setting stayed structure, the cantilever span of steel coupling beam can be increased, use for reference oblique pull
The principle of bridge stress, vertical load load being converted into stand column pile, the maximized bearing capacity for playing stand column pile, not only
The cantilever span of steel coupling beam is considerably increased, while it is more with bracing members to encorbelment, solve that conventional solution method is a series of to ask
Topic.
In a preferred embodiment, drag-line 5 is connected with lattice column 2 and steel coupling beam 3 respectively by fixed angle steel 6, certainly
Fixation can also be attached using other connectors.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, all any modification, equivalent and improvement made within the spirit and principles of the invention etc., all should be included
Within protection scope of the present invention.
Claims (8)
- A kind of 1. supporting construction of encorbelmenting for foundation pit steel support, it is characterised in that including：It is vertically arranged in foundation ditch and perpendicular to the stand column pile for the bracing members being respectively set up in parallel；Steel coupling beam, it is fixedly mounted through the stand column pile and its middle part with stand column pile, and its both ends stretches out in the stand column pile simultaneously Form cantilever design, and the steel coupling beam be arranged at below each bracing members and with each bracing members traversed by, to be carried out to each bracing members Support；AndDrag-line, it is more, and one end of each drag-line is fixedly connected with the position being located in stand column pile above steel coupling beam, the other end Diverse location on two cantilever ends of steel coupling beam is each individually fixed in, is realized in a manner of this forms oblique pull suspension cable with steel coupling beam pair The support of encorbelmenting of steel coupling beam.
- 2. the supporting construction of encorbelmenting according to claim 1 for foundation pit steel support, wherein, each cantilever of steel coupling beam More than two bracing members are supported by end.
- 3. the supporting construction of encorbelmenting according to claim 1 or 2 for foundation pit steel support, wherein, each of steel coupling beam is hanged On arm end drag-line is provided between any two bracing members.
- 4. the supporting construction of encorbelmenting according to any one of claim 1 to 3 for foundation pit steel support, wherein, the drawing Rope is steel strand wires.
- 5. the supporting construction of encorbelmenting according to any one of claim 1 to 4 for foundation pit steel support, wherein, the drawing Rope is connected by fixed angle steel with steel coupling beam.
- 6. the supporting construction of encorbelmenting according to any one of claim 1 to 5 for foundation pit steel support, wherein, the drawing Rope is connected by fixed angle steel with stand column pile.
- 7. the supporting construction of encorbelmenting according to any one of claim 1 to 6 for foundation pit steel support, wherein, it is described vertical Stanchion upper end is provided with lattice column, and the steel coupling beam is fixedly mounted with the lattice column.
- 8. the supporting construction of encorbelmenting according to any one of claim 1 to 7 for foundation pit steel support, wherein, shown steel Coupling beam is vertically arranged with each bracing members.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710703106.1A CN107354946A (en) | 2017-08-16 | 2017-08-16 | A kind of supporting construction of encorbelmenting for foundation pit steel support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710703106.1A CN107354946A (en) | 2017-08-16 | 2017-08-16 | A kind of supporting construction of encorbelmenting for foundation pit steel support |
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| Publication Number | Publication Date |
|---|---|
| CN107354946A true CN107354946A (en) | 2017-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710703106.1A Pending CN107354946A (en) | 2017-08-16 | 2017-08-16 | A kind of supporting construction of encorbelmenting for foundation pit steel support |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108316315A (en) * | 2018-03-29 | 2018-07-24 | 中铁第四勘察设计院集团有限公司 | It is a kind of to exempt to set up the vertical stability structure of stanchion suitable for foundation pit |
| CN109024611A (en) * | 2018-08-16 | 2018-12-18 | 中船勘察设计研究院有限公司 | Across support of tunnel large span stand column device |
| CN111691546A (en) * | 2020-04-30 | 2020-09-22 | 海南大学 | Anti-seismic cantilever structure |
| CN111764406A (en) * | 2020-08-19 | 2020-10-13 | 中国五冶集团有限公司 | Adjustable inhaul cable |
| CN112575789A (en) * | 2020-11-30 | 2021-03-30 | 广西大学 | Diagonal space truss foundation pit inner support system |
| CN114544872A (en) * | 2022-02-11 | 2022-05-27 | 清华大学 | Be used for open-air simulation of forest to heat device |
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| CN205347899U (en) * | 2016-02-23 | 2016-06-29 | 四川中德空铁科技有限公司 | Monorail train pillar construction |
| CN105862878A (en) * | 2016-05-30 | 2016-08-17 | 建研地基基础工程有限责任公司 | Supporting system for deep foundation pit |
| CN207176694U (en) * | 2017-08-16 | 2018-04-03 | 中铁第四勘察设计院集团有限公司 | A kind of supporting construction of encorbelmenting for foundation pit steel support |
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| US20150052694A1 (en) * | 2012-06-01 | 2015-02-26 | Ihi Infrastructure Systems Co., Ltd. | Method for replacing sloped cables, and temporary hanger for replacing sloped cables |
| CN103291116A (en) * | 2013-05-20 | 2013-09-11 | 中国十五冶金建设集团有限公司 | Grid-type formwork supporting and operating platform for construction of water tank on top of inverted-cone water tower |
| CN203403422U (en) * | 2013-06-06 | 2014-01-22 | 广西建工集团第五建筑工程有限责任公司 | Long-span reinforced concrete inner support structure of rectangular deep foundation pit |
| CN103321410A (en) * | 2013-06-26 | 2013-09-25 | 青岛建安建设集团有限公司 | Overhang diagonal form at exposed corner and method for erecting form |
| CN103967018A (en) * | 2014-05-09 | 2014-08-06 | 深圳市工勘岩土集团有限公司 | Deep and large foundation pit angle supporting horizontal shearing resistance structure |
| CN204040436U (en) * | 2014-08-07 | 2014-12-24 | 龙元建设集团股份有限公司 | For the self-balancing steel builder's jack of overlength cantilevered structure framed bent construction |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108316315A (en) * | 2018-03-29 | 2018-07-24 | 中铁第四勘察设计院集团有限公司 | It is a kind of to exempt to set up the vertical stability structure of stanchion suitable for foundation pit |
| CN109024611A (en) * | 2018-08-16 | 2018-12-18 | 中船勘察设计研究院有限公司 | Across support of tunnel large span stand column device |
| CN111691546A (en) * | 2020-04-30 | 2020-09-22 | 海南大学 | Anti-seismic cantilever structure |
| CN111764406A (en) * | 2020-08-19 | 2020-10-13 | 中国五冶集团有限公司 | Adjustable inhaul cable |
| CN112575789A (en) * | 2020-11-30 | 2021-03-30 | 广西大学 | Diagonal space truss foundation pit inner support system |
| CN114544872A (en) * | 2022-02-11 | 2022-05-27 | 清华大学 | Be used for open-air simulation of forest to heat device |
| CN114544872B (en) * | 2022-02-11 | 2023-03-10 | 清华大学 | Be used for open-air simulation of forest to heat device |
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Application publication date: 20171117 |