CN207987917U - A kind of frost-cracking-preventing steel-pipe pile suitable for frost zone bridge subaqueous work - Google Patents
A kind of frost-cracking-preventing steel-pipe pile suitable for frost zone bridge subaqueous work Download PDFInfo
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- CN207987917U CN207987917U CN201820368127.2U CN201820368127U CN207987917U CN 207987917 U CN207987917 U CN 207987917U CN 201820368127 U CN201820368127 U CN 201820368127U CN 207987917 U CN207987917 U CN 207987917U
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Abstract
The utility model is related to a kind of frost-cracking-preventing steel-pipe piles suitable for frost zone bridge subaqueous work, including steel pipe pile body, steel pipe pile body lower end inserting piling is in water-bed rock stratum, there is the water level of certain altitude in steel pipe pile body, a float floated in water is equipped in steel pipe pile body, the float is that have the soft impermeable material of the column of certain length, the top surface of float is higher than certain altitude on water level in steel-pipe pile, bottom surface is located in steel-pipe pile certain depth under the water surface, which is frost zone maximum gauge ice sheet bottom surface or less.
Description
Technical field
The utility model is related to technical field of bridge construction, and in particular to a kind of suitable for the antifreeze of frost zone bridge construction
Split steel-pipe pile.
Background technology
When bridge subaqueous work, to set up the falseworks such as steel trestle, steel platform and construct for bridge substructure.Temporarily
The construction of holder is mainly steel-pipe pile+main spandrel girder+distribution beam+floorings, and wherein steel-pipe pile is usually located at water (river, river, lake)
In, lower end inserting piling enters in water-bed rock stratum, and upper end protrudes from the water surface, supports spandrel girder, there is the water level of certain altitude in steel-pipe pile.
In the area construction for having ice period, the water surface can freeze in winter, form ice sheet.Since the water in steel-pipe pile can equally freeze,
Under the action of frost-heave force, brittle break can be generated to steel-pipe pile, steel-pipe pile spalling can be led to steel pipe pile bearing capacity when serious
And falsework structural stability declines, and generates security risk.
Invention content
The purpose of this utility model is that being provided a kind of suitable for frost zone by the present situation of bursting by freezing for frost zone steel-pipe pile
The frost-cracking-preventing steel-pipe pile of bridge subaqueous work.
The technical solution of the utility model is as follows：
A kind of frost-cracking-preventing steel-pipe pile suitable for frost zone bridge subaqueous work, including steel pipe pile body, steel pipe pile body
Lower end inserting piling is in the water level for having certain altitude in water-bed projected depth, steel pipe pile body, it is characterised in that：The steel pipe pile body
It is inside equipped with a float floated in water, the float is that have the soft impermeable material of the column of certain length, the float
Higher than certain altitude on the water surface in steel pipe pile body, certain depth under the water surface is goed deep into steel pipe pile body in bottom surface for top surface.
The utility model is provided with the float of soft impermeable material in steel-pipe pile, the water freezing expansion in steel-pipe pile
When, soft impermeable material is squeezed collapsible by ice sheet, thus gives ice sheet enough expansion space, it is possible to prevente effectively from ice sheet to
Outer expansion causes brittle break and bursting by freezing phenomenon to steel-pipe pile, has ensured the stable structure of steel pipe pile bearing capacity and falsework
Property.
Description of the drawings
Fig. 1 is the vertical structure sectional view of the utility model；
Fig. 2 is a kind of overlooking structure diagram figure of embodiment of the utility model.
Specific implementation mode
As shown in Figure 1, the utility model includes steel pipe pile body 1,1 lower end inserting piling of steel pipe pile body is deep in bottom design
It spends, there is the water level of certain altitude in steel pipe pile body.Height of water level inside and outside usual steel pipe pile body is consistent, so that steel pipe pile pipe
Inside and outside hydraulic pressure suffered by wall is consistent.A float 2 floated in water is equipped in steel pipe pile body, the float 2, which is one section, to be had centainly
The soft impermeable material of column of height, the top surface of the float is higher than certain altitude on the water surface in steel pipe pile body, bottom surface
Go deep into steel pipe pile body certain depth under the water surface.
The utility model is when it is implemented, the depth under the water surface in steel pipe pile body is goed deep into float bottom surface, according to construction
When the freezed in winter of frost zone depending on the maximum gauge of ice sheet 3, it is ensured that float bottom surface is located at a depthkeeping under most thick ice sheet bottom surface
Degree.The ice sheet maximum gauge of frost zone can be obtained according to construction area winter climate investigation over the years.
Facility work area ice sheet maximum gauge is H, and the length that float is located at the water surface (ice face) or more is h1, and float bottom surface is goed deep into
Length under most thick ice sheet bottom is h2, then the total length L of float should be：L=h1+H+h2
When it is implemented, float top surface is generally made to be higher by steel pipe pile body the more than the water surface at least 20cm, float bottom surface position
In water surface depth below, it is traditionally arranged to be less than at least 20cm below 3 maximum gauge bottom surface of ice sheet.
Float uses soft impermeable material, can be shunk when being to be squeezed by ice sheet, ice sheet is made inwardly to expand, avoided
Expansion damages steel-pipe pile to ice sheet outward.To give ice sheet enough inside expansion spaces, sky may be configured as in the middle part of float
The heart.
The cross section of float may be configured as round, polygon or quincunx.As shown in Fig. 2, the float of quincunx cross section
It is more advantageous to when being squeezed to contract.
As shown in Figure 1, to make float that enough length be kept to be located at the water surface hereinafter, a weight can be connected in the bottom of float
4.The gravity of the weight 4 is equal to the buoyancy of float in water.Plummet can be used in weight, can also be with mixed with the quality such as plummet
Solidifying soil block.
To keep float position in steel-pipe pile placed in the middle, can be welded less than at float upper end in the steel-pipe pile inner body wall
One upper limit hoop 5, higher than welding position-limited hoop 6 at float lower end, the upper limit hoop and lower limit hoop be all include one by
The annulus that reinforcing bar or steel plate turn to, annulus outside are welded with steel-pipe pile inner wall, and uniform welding 4 is distinguished into steel-pipe pile in inside
The gag lever post facing each other 7 that the heart extends, 7 length of each gag lever post is identical, every two opposite the distance between 7 front ends of gag lever post
Equal to or more than the diameter of float.
The utility model is constructed for frost zone, in winter, when the water freezing in steel-pipe pile, since float is soft material
Material, ice sheet can inwardly squeeze float when expanding, without outside expansion damage steel-pipe pile, to prevent steel-pipe pile bursting by freezing.
Claims (6)
1. a kind of frost-cracking-preventing steel-pipe pile suitable for frost zone bridge subaqueous work, including steel pipe pile body, under steel pipe pile body
Hold inserting piling in the water level for having certain altitude in water-bed projected depth, steel pipe pile body, it is characterised in that：In the steel pipe pile body
Float in water is floated on equipped with one, the float is that have the soft impermeable material of the column of certain length, the top of the float
Higher than certain altitude on the water surface in steel pipe pile body, certain depth under the water surface is goed deep into steel pipe pile body in bottom surface in face.
2. the frost-cracking-preventing steel-pipe pile according to claim 1 suitable for frost zone bridge subaqueous work, it is characterised in that：Institute
It states float top surface and is higher by steel pipe pile body more than water level at least 20cm, it is less than ice that float bottom surface, which is located at water surface depth below,
Freeze area maximum gauge ice sheet bottom surface or less at least 20cm.
3. the frost-cracking-preventing steel-pipe pile according to claim 1 suitable for frost zone bridge subaqueous work, it is characterised in that：Institute
The middle part for stating float is hollow.
4. the frost-cracking-preventing steel-pipe pile according to claim 1 suitable for frost zone bridge subaqueous work, it is characterised in that：Institute
The cross section for stating float is round, polygon or quincunx.
5. the frost-cracking-preventing steel-pipe pile according to claim 1 suitable for frost zone bridge subaqueous work, it is characterised in that：Institute
The bottom for stating float connects a weight, and the gravity of the weight is equal to the buoyancy of float in water.
6. the frost-cracking-preventing steel-pipe pile according to claim 1 suitable for frost zone bridge subaqueous work, it is characterised in that：
Less than a upper limit hoop is welded at float upper end in the steel-pipe pile inner body wall, higher than one lower limit of welding at float lower end
It binds round, 4 isometric limits facing each other extended to steel pipe pile center of uniform welding is distinguished on the upper limit hoop and lower limit hoop
Position bar, the distance between every two opposite gag lever post front ends are equal to or more than the diameter of float.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820368127.2U CN207987917U (en) | 2018-03-17 | 2018-03-17 | A kind of frost-cracking-preventing steel-pipe pile suitable for frost zone bridge subaqueous work |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820368127.2U CN207987917U (en) | 2018-03-17 | 2018-03-17 | A kind of frost-cracking-preventing steel-pipe pile suitable for frost zone bridge subaqueous work |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207987917U true CN207987917U (en) | 2018-10-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820368127.2U Active CN207987917U (en) | 2018-03-17 | 2018-03-17 | A kind of frost-cracking-preventing steel-pipe pile suitable for frost zone bridge subaqueous work |
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| Country | Link |
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| CN (1) | CN207987917U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108360503A (en) * | 2018-03-17 | 2018-08-03 | 中交路桥建设有限公司 | A kind of frost-cracking-preventing steel-pipe pile suitable for frost zone bridge subaqueous work |
-
2018
- 2018-03-17 CN CN201820368127.2U patent/CN207987917U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108360503A (en) * | 2018-03-17 | 2018-08-03 | 中交路桥建设有限公司 | A kind of frost-cracking-preventing steel-pipe pile suitable for frost zone bridge subaqueous work |
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