CN208379609U - A kind of variable cross-section bonded prestressed concrete support construction - Google Patents
A kind of variable cross-section bonded prestressed concrete support construction Download PDFInfo
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- CN208379609U CN208379609U CN201820875649.1U CN201820875649U CN208379609U CN 208379609 U CN208379609 U CN 208379609U CN 201820875649 U CN201820875649 U CN 201820875649U CN 208379609 U CN208379609 U CN 208379609U
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- supporting beam
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- steel strand
- strand wires
- prestressed concrete
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Abstract
The utility model relates to base pit engineering fields, disclose a kind of variable cross-section bonded prestressed concrete support construction, including support pile, the top of support pile is equipped with support rod and supporting beam, and steel strand wires are equipped in supporting beam, are equipped with support tube in the supporting beam, the steel strand wires are arranged in support tube, it is uniformly provided with several grout holes on the support tube, the grouting mouth with grout hole face is offered in the supporting beam, cement slurry is filled between the bellows and steel strand wires.After cement slurry is dry, steel strand wires are fixed cement slurry with support tube is connected.When supporting beam is removed, cement slurry is bonded together with steel strand wires, and steel strand wires are fixed in the cement slurry after drying; steel strand wires can not be sprung back when being broken, to protect to personnel, prevent safety accident; mechanical and personal injury risk is avoided, the safety of construction is improved.
Description
Technical field
The utility model relates to base pit engineering field, in particular to a kind of variable cross-section bonded prestressed concrete support knot
Structure.
Background technique
In base pit engineering field, inner supporting structure generallys use reinforced concrete structure form, to resist by soil pressure
The significant horizontal power generated with ground load, inner support need to be arranged to the very big horizontal shore of geometric dimension, prop up in level
Support beam crossover sites will also arrange column with rest supporting beam.
Currently, the Chinese patent that Authorization Notice No. is CN203821400U discloses foundation pit pre-loaded support struts structure, wrap
Include vertical soil blocking component, crown beam and purlin beam.Crown beam and purlin beam are reinforced beam, and crown beam, which pours, is connected to vertical gear
The top end face of native component, vertical soil blocking component anchor into crown beam, are disposed with first sleeve in crown beam, and the is equipped in first sleeve
One presstressed reinforcing steel, the first presstressed reinforcing steel use the pre- steel strand wires of soap-free emulsion polymeization, are provided at the both ends support of crown beam to the first prestressing force
Muscle applies prestressed anchorage.The support construction rigidity is big, span is big, increases foundation pit construction working space, the earthwork is facilitated to open
Digging and Underground Construction, improve construction efficiency, reduce cost.
During foundation pit construction, supporting as a kind of temporary structure, support needs to remove at the end of underground engineering construction,
When unbonded prestressed concrete is removed, steel strand wires are in high stress tight state, since steel strand wires non-binding can carry out freedom
Sliding, when steel strand wires disconnect or remove when, steel strand wires be easy to happen rebound to personnel generate unexpected injury, safety compared with
It is low.
Utility model content
The purpose of the utility model is to provide a kind of variable cross-section bonded prestressed concrete support constructions, have safety
The high advantage of property.
The above-mentioned technical purpose of the utility model has the technical scheme that a kind of variable cross-section has bonding
Prestressed concrete support construction, including support pile, the top of support pile are equipped with support rod and supporting beam, are equipped with steel in supporting beam
Twisted wire, the supporting beam is interior to be equipped with support tube, and the steel strand wires are arranged in support tube, if being uniformly provided on the support tube
Dry grout hole offers the grouting mouth with grout hole face in the supporting beam, is filled between the support tube and steel strand wires
Cement slurry.
By using above-mentioned technical proposal, when installation, support pile is installed in foundation pit, supporting beam and support rod are fixed on
Support pile is fixed in the upper end of support pile.Steel strand wires are penetrated in support tube, support tube is packed into supporting beam, fill Jiangkou
With grout hole face.Using punching jack tension steel strand wires and steel strand wires are locked, Grouting Pipe is deeply in the milk mouth from grouting mouth
It is interior, start to cement slurry is injected in support tube, cement slurry is wrapped in outside steel strand wires.After cement slurry is dry, cement slurry is by steel strand wires
It is fixed and is connected with support tube.When supporting beam is removed, cement slurry is bonded together with steel strand wires, the cement slurry pair after drying
Steel strand wires are fixed, and steel strand wires can not be sprung back when being broken, to protect to personnel, prevent safety accident, avoid
Mechanical and personal injury risk, improves the safety of construction.
The utility model is further arranged to: the support rod and supporting beam form " mouth " font, the supporting beam and branch
Support beam is oppositely arranged, and the supporting beam is non-uniform beam, and the supporting beam includes horizontal lateral surface and inwardly projecting arc
Face.
By using above-mentioned technical proposal, foundation pit is generally rectangular, and support rod and supporting beam form " mouth " font and foundation pit
It fits.Four sides of foundation pit are facing each other respectively at two supporting beams and support rod.The side of foundation pit applies supporting beam
The both ends of pressure, supporting beam are connected with support rod, and support rod applies support force to the both ends of supporting beam.The length of supporting beam is longer
Middle position is easy to produce amount of deflection.The middle position of supporting beam is set as arcwall face, and the section in the middle position of supporting beam is larger, adds
The structural strength of strong supporting beam, improves the stability of structure.In addition, the pressure suffered by among supporting beam is greater than supporting beam two sides
Pressure, supporting beam are sized to arc-shaped, instead of traditional rectangular strip supporting beam, save material according to stress, save at
This.
The utility model is further arranged to: several vertical empty stomaches through supporting beam are offered in the supporting beam.
By using above-mentioned technical proposal, dig several empty stomaches through supporting beam in supporting beam, save material, save at
This.When underground, major project is constructed from the bottom up, underground external wall only has 1.0m to 2.0m apart from support pile space, and personnel enter and leave
It can seem when foundation pit more crowded.When personnel enter and leave foundation pit dismounting support construction, need to carry many construction materials, underground external wall
The smaller flowing for being not easy to personnel in space between support pile.The setting of empty stomach increases the discrepancy space of personnel, is convenient for
Construction personnel's flows up and down, and improves working efficiency.
The utility model is further arranged to: the steel strand wires are set in arcwall face.
By using above-mentioned technical proposal, the pressure that arcwall face is born is larger, and steel strand wires are set in arcwall face to arc
Face is supported, and improves the structural strength of arcwall face.
The utility model is further arranged to: the support tube is metal bellows.
By using above-mentioned technical proposal, steel strand wires are easy to happen sliding or deformation, metal bellows in stretching process
With certain deformability, it can be matched with steel strand wires and guarantee support tube to the package action of steel strand wires.In addition, metal wave
Line pipe has the ripple to rise and fall, increases the contact area between metal bellows and cement slurry, improves bonding force between the two.
The utility model is further arranged to: being equipped with angle between the support rod and supporting beam and is supported.
By using above-mentioned technical proposal, the stable framework of triangle, branch are formed between angle support, support rod and supporting beam
Structure between strut and supporting beam is relatively stable, is unlikely to deform, and support effect is preferable.
The utility model is further arranged to: the both ends of the angle support are equipped with the inner concave of " Qian " font, the support
Beam and support rod inlay card are in inner concave.
By using above-mentioned technical proposal, when support rod and supporting beam are connected with angle support, supporting beam and support rod inlay card
In in the inner concave of angle support, angle support is larger with the contact area of support rod and supporting beam, connects relatively stable.
The utility model is further arranged to: reinforced steel is equipped in the supporting beam.
By using above-mentioned technical proposal, reinforced steel enhances the structural strength of supporting beam.
In conclusion the utility model has the following beneficial effects:
1, by the setting of support tube, when supporting beam is removed, cement slurry is bonded together with steel strand wires, the water after drying
Steel strand wires are fixed in mud, and steel strand wires can not be sprung back when being broken, to protect to personnel, prevent safe thing
Therefore mechanical and personal injury risk is avoided, improve the safety of construction；
2, by the setting of non-uniform beam, among supporting beam suffered by pressure be greater than the pressure of supporting beam two sides, supporting beam
It is sized to arc-shaped according to stress, instead of traditional rectangular strip supporting beam, saves material, save cost；
3, by the setting of empty stomach, the setting of empty stomach increases the discrepancy space of personnel, and upper convenient for construction personnel flows down
It is dynamic, improve working efficiency.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of embodiment；
Fig. 2 is the schematic cross-sectional view of A-A in Fig. 1.
In figure: 1, support pile；2, support rod；3, supporting beam；4, steel strand wires；5, support tube；6, grout hole；7, be in the milk mouth；
8, cement slurry；9, lateral surface；10, arcwall face；11, on an empty stomach；12, angle supports；13, inner concave；14, reinforced steel.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing.
Embodiment:
A kind of variable cross-section bonded prestressed concrete support construction, such as Fig. 1 and Fig. 2, including support pile 1, support pile 1
Top is equipped with support rod 2 and supporting beam 3, is equipped with steel strand wires 4 in supporting beam 3.Support rod 2 and supporting beam 3 are all armored concrete
Beam.Support pile 1 surrounds that " mouth " font is identical as foundation pit shape, and the upper end of support pile 1 anchors into support rod 2 and supporting beam 3.Support
Bar 2 and supporting beam 3 are carried out shaping and are supported to support pile 1.
Such as Fig. 1, supporting beam 3 is non-uniform beam, including towards the lateral surface 9 for being located at outside and towards the arcwall face of inner cavity
10, lateral surface 9 is horizontally disposed to fit with foundation pit, larger with the contact area of foundation pit, guarantees support effect.It is worn in supporting beam 3
Structural strength equipped with reinforced steel 14 to enhance supporting beam 3.
Such as Fig. 1, inwardly protruding 10 middle position of arcwall face is arc, and two sides are connected more smooth with support rod 2.Arcwall face
The area of section of 10 two sides is less than the area of section in middle position.The length of supporting beam 3 is longer, and middle position, which is easy to produce, scratches
Degree.The section in the middle position of arcwall face 10 is larger, larger to the support force of foundation pit, and the structural strength of supporting beam 3 is higher, structure
It is relatively stable.
Such as Fig. 1, the middle position of supporting beam 3 offers several vertical empty stomaches 11 through supporting beam 3,11 reduces on an empty stomach
The volume of supporting beam 3 reduces consumptive material, save the cost.Moreover, when underground major project is constructed from the bottom up, underground external wall away from
There was only 1.0m to 2.0m from 1 space of support pile, personnel can seem more crowded when entering and leaving foundation pit.Personnel enter and leave foundation pit dismounting support
When structure, need to carry many construction materials, the smaller stream for being not easy to personnel in space of the underground external wall between support pile 1
It is dynamic.11 setting increases the discrepancy space of personnel on an empty stomach, convenient for flowing up and down for construction personnel, improves working efficiency.
Such as Fig. 1 and Fig. 2, arcwall face 10 is interior to be equipped with support tube 5, and support tube 5 is metal bellows, is equipped in support tube 5
Steel strand wires 4.Inserting hole identical with 10 inner cavity of arcwall face there are two setting on lateral surface 9, the both ends of steel strand wires 4 are worn from two respectively
Jack is pierced by, and steel strand wires 4 are carried out tensioning positioning by anchorage.
Such as Fig. 1 and Fig. 2,3 upper surface of supporting beam is uniformly provided with several grouting mouths 7, offers on support tube 5 and grouting mouth
The grout hole 6 of 7 faces.After 4 tensioning of steel strand wires, Grouting Pipe is protruded into grout hole 6 from grouting mouth 7 and is sealed, is started to support
Cement slurry 8 is injected in pipe 5, then cement slurry 8 is bonded together with the steel strand wires 4 after tensioning.After cement slurry 8 is dry, cement slurry 8 will
Steel strand wires 4 are fixed with support tube 5 to be connected.When supporting beam 3 is removed, cement slurry 8 is bonded together with steel strand wires 4, dry
Steel strand wires 4 are fixed in cement slurry 8 afterwards, and steel strand wires 4 can not be sprung back when being broken, to protect personnel, prevent from sending out
Raw safety accident, avoids mechanical and personal injury risk, improves the safety of construction.
Such as Fig. 1 and Fig. 2, angle support 12 is equipped between support rod 2 and supporting beam 3, the both ends of angle support 12 are equipped with " Qian " word
The inner concave 13 of shape, the supporting beam 3 and 2 inlay card of support rod in inner concave 13, angle support 12, support rod 2 and supporting beam 3 it
Between formed triangle stable framework, the structure between support rod 2 and supporting beam 3 is relatively stable, be unlikely to deform, support effect compared with
It is good.
This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability
Field technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but
As long as all by the protection of Patent Law in the scope of the claims of the utility model.
Claims (8)
1. a kind of variable cross-section bonded prestressed concrete support construction, including support pile (1), the top of support pile (1) are equipped with
Support rod (2) and supporting beam (3), supporting beam (3) is interior to be equipped with steel strand wires (4), it is characterised in that: is equipped in the supporting beam (3)
Support tube (5), the steel strand wires (4) are arranged in support tube (5), are uniformly provided with several grout holes on the support tube (5)
(6), it is offered on the supporting beam (3) and the grouting mouth (7) of grout hole (6) face, the support tube (5) and steel strand wires (4)
Between be filled with cement slurry (8).
2. a kind of variable cross-section bonded prestressed concrete support construction according to claim 1, it is characterised in that: described
Support rod (2) and supporting beam (3) form " mouth " font, and the supporting beam (3) is oppositely arranged with supporting beam (3), the supporting beam
It (3) is non-uniform beam, the supporting beam (3) includes horizontal lateral surface (9) and inwardly projecting arcwall face (10).
3. a kind of variable cross-section bonded prestressed concrete support construction according to claim 2, it is characterised in that: described
Several vertical empty stomaches (11) through supporting beam (3) are offered in supporting beam (3).
4. a kind of variable cross-section bonded prestressed concrete support construction according to claim 3, it is characterised in that: described
Steel strand wires (4) are set in arcwall face (10).
5. a kind of variable cross-section bonded prestressed concrete support construction according to claim 1, it is characterised in that: described
Support tube (5) is metal bellows.
6. a kind of variable cross-section bonded prestressed concrete support construction according to claim 1, it is characterised in that: described
Angle support (12) is equipped between support rod (2) and supporting beam (3).
7. a kind of variable cross-section bonded prestressed concrete support construction according to claim 6, it is characterised in that: described
Angle supports the both ends of (12) to be equipped with the inner concave (13) of " Qian " font, and the supporting beam (3) and support rod (2) inlay card are in inner concave
(13) in.
8. a kind of variable cross-section bonded prestressed concrete support construction according to claim 1, it is characterised in that: described
Reinforced steel (14) are equipped in supporting beam (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820875649.1U CN208379609U (en) | 2018-06-05 | 2018-06-05 | A kind of variable cross-section bonded prestressed concrete support construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820875649.1U CN208379609U (en) | 2018-06-05 | 2018-06-05 | A kind of variable cross-section bonded prestressed concrete support construction |
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| Publication Number | Publication Date |
|---|---|
| CN208379609U true CN208379609U (en) | 2019-01-15 |
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ID=64969596
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820875649.1U Active CN208379609U (en) | 2018-06-05 | 2018-06-05 | A kind of variable cross-section bonded prestressed concrete support construction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115305924A (en) * | 2022-08-30 | 2022-11-08 | 甘肃中建市政工程勘察设计研究院有限公司 | Prestress construction method for reducing deformation of deep foundation pit |
-
2018
- 2018-06-05 CN CN201820875649.1U patent/CN208379609U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115305924A (en) * | 2022-08-30 | 2022-11-08 | 甘肃中建市政工程勘察设计研究院有限公司 | Prestress construction method for reducing deformation of deep foundation pit |
| CN115305924B (en) * | 2022-08-30 | 2023-10-27 | 甘肃中建市政工程勘察设计研究院有限公司 | Prestress construction method for reducing deformation of deep foundation pit |
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