CN109356168A - A kind of bracing members segmented head - Google Patents
A kind of bracing members segmented head Download PDFInfo
- Publication number
- CN109356168A CN109356168A CN201811434647.XA CN201811434647A CN109356168A CN 109356168 A CN109356168 A CN 109356168A CN 201811434647 A CN201811434647 A CN 201811434647A CN 109356168 A CN109356168 A CN 109356168A
- Authority
- CN
- China
- Prior art keywords
- bracing members
- plate
- bottom plate
- limit plate
- outer cylinder
- 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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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 25
- 230000001681 protective effect Effects 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000009827 uniform distribution Methods 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 description 11
- 239000010959 steel Substances 0.000 description 11
- 239000000463 material Substances 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000009466 transformation 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
- 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)
- Bridges Or Land Bridges (AREA)
Abstract
This application provides a kind of bracing members segmented heads, including pedestal, the outer barrel component being flexibly connected with the pedestal, at least two screw rods that the pedestal includes bottom plate, is mounted on the bottom plate, nut is threaded on screw rod, the outer barrel component includes outer cylinder, the limit plate for being mounted on described outer cylinder one end, the aperture passed through for screw rod is provided on the limit plate, the nut is between the bottom plate and the limit plate, by rotating nuts, the distance between limit plate and bottom plate are adjusted.A kind of bracing members segmented head of the application increases screw rod, the movable end for being also easy to produce axle power loss is fixed in nut, it is ensured that active end position is not loosened because of drift, and generates axle power loss.Before routinely obtaining bracing members erection and finishing, remove jack, bolt is adjusted to far from support end face and obtains side, and is tightened, it is ensured that nut fastening.Even if drift loosens, still it is supported by screw rod, avoids the loss of bracing members axle power.
Description
Technical field
This application involves a kind of bracing members segmented heads.
Background technique
With flourishing for urban rail transit in China construction, open-cut foundation ditch engineering quantity gradually increases, cutting depth
Gradually deepen, the complicated multiplicity of structure type.For subway station multidigit in urban center section, surrounding enviroment are complicated, building and each
Class pipeline is intensive, and the requirement to pattern foundation pit supporting structure effect and Deformation control is higher and higher.
Because its erection is fast, light-weight, recyclable etc., that many advantages become inner supporting structure to steel pipe support is preferred.Steel pipe support
System is fabricated construction, and weak link is the active end structure especially in node at connecting node, globality poor at this
And it is more weak, inner support system destroys almost all and starts to result from this, then whole loosenings, unstability to occur, falls etc. to break
It is bad.Bracing members itself have larger intensity redundancy, and statistical engineering accident data is it is found that steel strength deficiency causes to lose the feelings of destruction
Condition ratio very little.As the key structure of power transmission in system, active header structure is applying prestressing force, axle power transmitting and is keeping, adjusts
The case where section length etc., determines the intensity and rigidity of whole bracing members.
Bracing members segmented head traditional at present is all made of spigot-and-socket, is locked using the wedge type block of different size to segmented head
It is fixed, but under such operating mode, even buckle since gad block processing quality is bad, point contact stress lower wedge block is compressed,
The factors such as site operation is lack of standardization, after jack oil pressure dump, gad block is difficult to effectively lock bracing members prestressing force, brace pre axial force
It often loses more, it is difficult to the design requirement of bracing members effective axial force is realized, to build (structure) to foundation pit enclosure structure and periphery
The Deformation control for building object generates risk hidden danger.
In recent years, steel support shaft force servo system is achieved fast-developing and is widely applied in theoretical and engineering, will
Axial force of the supports is changed by the passive compression under deforming that relaxes actively to pressurize, can be according to the deformation control close to deep basal pit protected object
System requires the deformation regulation for actively carrying out foundation pit enclosure structure.Steel support shaft force servo system includes hydraulic system, support system
And observing and controlling system, whole system equipment cost is expensive, and later maintenance administration fee is also higher, it is difficult to carry out in base pit engineering big
Area popularizes application.Furthermore subtract if causing axial force of the supports to collapse after the classes failure such as its hydraulic system appearance oil circuit booster,
Disaster consequence may be generated to foundation pit itself and surrounding enviroment.
Based on deficiency present in traditional bracing members and axle power servo-system and limitation, the application, which is intended to research and develop, a kind of can have
Effect, which is protected, carries brace pre axial force, novel active header structure that is economical and practical, being widely applied deep foundation pit support.
Summary of the invention
The application technical problems to be solved are to provide a kind of bracing members segmented head that can effectively protect and carry brace pre axial force.
In order to solve the above-mentioned technical problem, this application provides a kind of bracing members segmented head, the bracing members segmented heads
Including pedestal, the outer barrel component being flexibly connected with the pedestal, the pedestal includes bottom plate, is mounted on the bottom plate
At least two screw rods, nut is threaded on screw rod, the outer barrel component includes outer cylinder, is mounted on the outer cylinder one
The limit plate at end is provided with the aperture passed through for screw rod on the limit plate, and the nut is located at the bottom plate and institute
Between the limit plate stated, by rotating nuts, the distance between limit plate and bottom plate are adjusted.
Preferably, the pedestal further includes an inner cylinder, and the one end of the inner cylinder is fixed on the bottom plate, institute
The other end for the inner cylinder stated is protruded into the outer cylinder, be additionally provided on the inner cylinder extend along its length for wedge
The card slot of shape block insertion.
Preferably, the outer barrel component includes two limit plates being arranged along the radial symmetric of outer cylinder, described in two
The channel passed through for the inner cylinder, the part difference of the limit plate being located on the outside of outer cylinder edge are formed between limit plate
Offer an aperture.
Preferably, it is mutually fixedly connected between the limit plate and the outer cylinder by two protective plates, described is anti-
One edge of backplate is axially arranged along outer cylinder, and is mutually fixedly connected with the outer wall of outer cylinder, the other edge of the protective plate with
The limit plate is fixedly connected, and the free end of the screw rod is located between two protective plates.
Preferably, the other end far from the pedestal of the outer cylinder is provided with ring flange.
Preferably, the pedestal further includes multiple support plates on the bottom plate, and the one of the support plate
Edge is axially arranged along inner cylinder, and is mutually fixedly connected with the outer wall of inner cylinder, the other edge of the support plate and the bottom
The inner surface of plate is mutually fixedly connected.
Preferably, the pedestal further includes at least one stiffening plate on the bottom plate, the stiffening plate
It is arranged perpendicular to the bottom plate.
Preferably, the aperture of the limit plate is that limit edges of boards edge is recessed inwardly the U-shaped card slot to be formed.
Preferably, the nut is along the multiple slots of its circumference uniform distribution.
A kind of bracing members segmented head of the application increases screw rod, nut carries out the movable end for being also easy to produce axle power loss
It is fixed, it is ensured that active end position is not loosened because of drift, and generates axle power loss.Before bracing members erection finishes, removes jack,
Bolt is adjusted to the side far from support end face, and is tightened, it is ensured that nut fastening.Avoid the loss of bracing members axle power.
Detailed description of the invention
Fig. 1 is to indicate bracing members segmented head side view provided by the present application.
Fig. 2 is to indicate bracing members segmented head top view provided by the present application.
Fig. 3 is to indicate bracing members segmented head pedestal front view provided by the present application.
Fig. 4 is to indicate bracing members segmented head base vertical view provided by the present application.
Fig. 5 is to indicate bracing members segmented head outer cylinder front view provided by the present application.
Fig. 6 is to indicate limit steel plate structure figure provided by the present application.
Fig. 7 is to indicate positioning shoulder guard structure chart provided by the present application.
Wherein: 1, bottom plate, 2, support plate, 3, stiffening plate, 4, inner cylinder, 5, nut, 6, screw rod, 7, limit plate, 8, protective plate,
9, outer cylinder, 10, ring flange.
Specific embodiment
The application is described further in the following with reference to the drawings and specific embodiments, so that those skilled in the art can be with
It more fully understands the application and can be practiced, but illustrated embodiment is not as the restriction to the application.
As shown, a kind of bracing members movable end, the bracing members segmented head includes pedestal and the pedestal activity
9 component of outer cylinder of connection, the pedestal includes bottom plate 1, at least two screw rods 6 that are mounted on the bottom plate 1, screw rod 6
On be threaded with nut 5,9 component of outer cylinder includes outer cylinder 9, the limit plate 7 for being mounted on described 9 one end of outer cylinder, institute
The aperture passed through for screw rod 6 is provided on the limit plate 7 stated, the nut 5 is located at the bottom plate 1 and the limit plate
Between 7, by rotating nuts 5, the distance between limit plate 7 and bottom plate 1 are adjusted.Preferably, 9 diameter of bracing members segmented head outer cylinder
For 609mm, wall thickness 20mm.The pedestal further includes an inner cylinder 4, and the one end of the inner cylinder 4 is fixed on the bottom
On plate 1, the other end of the inner cylinder 4 is protruded into the outer cylinder 9, and side along its length is additionally provided on the inner cylinder 4
To the card slot of extension being inserted into for wedge block.9 component of outer cylinder includes two limits being arranged along the radial symmetric of outer cylinder 9
Plate 7, forms the channel passed through for the inner cylinder 4 between limit plate 7 described in two, and the limit plate 7 is located at outer cylinder 9
Part on the outside of edge offers an aperture respectively.Pass through two protective plates 8 between the limit plate 7 and the outer cylinder 9
It is mutually fixedly connected, an edge of the protective plate 8 is mutually fixedly connected, institute along the axial setting of outer cylinder 9 with the outer wall of outer cylinder 9
The other edge for the protective plate 8 stated is fixedly connected with the limit plate 7, and the free end of the screw rod 6, which is located at two, to be prevented
Between backplate 8.The other end far from the pedestal of the outer cylinder 9 is provided with ring flange 10.The pedestal also wraps
Include the multiple support plates 2 being set on the bottom plate 1, an edge of the support plate 2 along the axial setting of inner cylinder 4, and with it is interior
The outer wall of cylinder 4 is mutually fixedly connected, and the other edge of the support plate 2 is mutually fixedly connected with the inner surface of the bottom plate 1.Institute
The pedestal stated further includes at least one stiffening plate 3 on the bottom plate 1, and the stiffening plate 3 is perpendicular to the bottom
Plate 1 is arranged.The aperture of the limit plate 7 is that 7 edge of limit plate is recessed inwardly the U-shaped card slot to be formed.In one embodiment,
The limit plate 7 is welded on the end of outer cylinder 9, and the protective plate 8 is welded on the outer wall of limit plate 7 and outer cylinder 9, described
Support plate 2 and stiffening plate 3 be welded on the inner surface of the bottom plate 1.
Fastening screw 6 uses M82 × 650mm, spiral shell referring to related data in national standard GB/T12359-2008 " trapezoidal thread "
Away from 16mm, screw rod strength grade is 8.8J.5 structure type of fastening nut is outer circular, outside nut 5Along circle
Zhou Junbu 8~12The hole of deep 21mm.Fastening screw 6 and fastening nut 5 select material to be added for the material of 45# steel
Work, by modifier treatment after processing, material yield strength can reach 640MPa, 6 intensity of screw rod: sectional area * compression strength is
5281 × 640=3379840N.
Fastening limit 7 size of the steel plate a height of 1000mm × 750mm of long *, to meet 2 jack and 2 fastened screw rods
Installation and operation require.Positioning shoulder guard 8 is the pentagon steel plate for including a right angle, outside one of right-angle side and steel pipe
Cylinder 9 outside vertical penetrations welding, another right-angle side and fastening limit steel plate penetration weld rib plate penetration welding are sheared: welding is cut
Area * weld seam shearing resistance is (300 × 20 × 2) × 160=1920000N.
A kind of bracing members segmented head of the application, increase screw rod 6, nut 5 to be also easy to produce axle power loss movable end into
Row is fixed, it is ensured that active end position is not loosened because of drift, and generates axle power loss.It is set up in bracing members and finishes, removes jack
Before, bolt is adjusted to the side far from support end face, and is tightened, it is ensured that nut 5 fastens.Avoid the loss of bracing members axle power.
Embodiment described above is only the preferred embodiment lifted to absolutely prove the application, the protection model of the application
It encloses without being limited thereto.Those skilled in the art made equivalent substitute or transformation on the basis of the application, in the application
Protection scope within.The protection scope of the application is subject to claims.
Claims (9)
1. a kind of bracing members segmented head, which is characterized in that the bracing members segmented head includes pedestal and the pedestal activity
The outer barrel component of connection,
At least two screw rods that the pedestal includes bottom plate, is mounted on the bottom plate are threaded with nut on screw rod,
The outer barrel component includes outer cylinder, the limit plate for being mounted on described outer cylinder one end, is provided on the limit plate
For the aperture that screw rod passes through, the nut, by rotating nuts, is adjusted between the bottom plate and the limit plate
The distance between limit plate and bottom plate.
2. a kind of bracing members segmented head as described in claim 1, which is characterized in that the pedestal further includes an inner cylinder, institute
The one end for the inner cylinder stated is fixed on the bottom plate, and the other end of the inner cylinder is protruded into the outer cylinder, described
Inner cylinder on be additionally provided with extend along its length for wedge block insertion card slot.
3. a kind of bracing members segmented head as claimed in claim 2, which is characterized in that the outer barrel component includes along outer cylinder
Two limit plates of radial symmetric setting form the channel passed through for the inner cylinder between limit plate described in two, described
Limit plate be located at outer cylinder edge on the outside of part offer an aperture respectively.
4. a kind of bracing members segmented head as claimed in claim 3, which is characterized in that the limit plate and the outer cylinder it
Between be mutually fixedly connected by two protective plates, an edge of the protective plate is axially arranged along outer cylinder, and the outer wall with outer cylinder
It is mutually fixedly connected, the other edge of the protective plate is fixedly connected with the limit plate, the free end of the screw rod
Between two protective plates.
5. a kind of bracing members segmented head as described in claim 1, which is characterized in that the separate pedestal of the outer cylinder
The other end be provided with ring flange.
6. a kind of bracing members segmented head as described in claim 1, which is characterized in that the pedestal further includes set on described
Multiple support plates on bottom plate, along the axial setting of inner cylinder, and with the outer wall of inner cylinder, mutually fixation connects at an edge of the support plate
It connects, the other edge of the support plate is mutually fixedly connected with the inner surface of the bottom plate.
7. a kind of bracing members segmented head as described in claim 1, which is characterized in that the pedestal further includes set on described
At least one stiffening plate on bottom plate, the stiffening plate are arranged perpendicular to the bottom plate.
8. a kind of bracing members segmented head as described in claim 1, which is characterized in that the aperture of the limit plate is limit plate
Edge is recessed inwardly the U-shaped card slot to be formed.
9. a kind of bracing members segmented head as described in claim 1, which is characterized in that the nut is multiple along its circumference uniform distribution
Slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811434647.XA CN109356168A (en) | 2018-11-28 | 2018-11-28 | A kind of bracing members segmented head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811434647.XA CN109356168A (en) | 2018-11-28 | 2018-11-28 | A kind of bracing members segmented head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109356168A true CN109356168A (en) | 2019-02-19 |
Family
ID=65343166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811434647.XA Pending CN109356168A (en) | 2018-11-28 | 2018-11-28 | A kind of bracing members segmented head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109356168A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110004941A (en) * | 2019-05-14 | 2019-07-12 | 戴向胜 | Mechanical lock movable end |
| CN110424400A (en) * | 2019-07-02 | 2019-11-08 | 浙江工业大学 | A kind of guarantor's power device for shaped steel combination support |
| CN110424401A (en) * | 2019-07-02 | 2019-11-08 | 浙江工业大学 | A kind of extension type locking prestressing apparatus for shaped steel combination support |
| CN111997411A (en) * | 2020-07-15 | 2020-11-27 | 中建三局第一建设工程有限责任公司 | Post-cast strip supporting device and supporting method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110004941A (en) * | 2019-05-14 | 2019-07-12 | 戴向胜 | Mechanical lock movable end |
| CN110424400A (en) * | 2019-07-02 | 2019-11-08 | 浙江工业大学 | A kind of guarantor's power device for shaped steel combination support |
| CN110424401A (en) * | 2019-07-02 | 2019-11-08 | 浙江工业大学 | A kind of extension type locking prestressing apparatus for shaped steel combination support |
| CN111997411A (en) * | 2020-07-15 | 2020-11-27 | 中建三局第一建设工程有限责任公司 | Post-cast strip supporting device and supporting method |
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