CN204898660U - Resistance to compression resistance to plucking composite pile under A corrosive environment - Google Patents
Resistance to compression resistance to plucking composite pile under A corrosive environment Download PDFInfo
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- CN204898660U CN204898660U CN201520358089.9U CN201520358089U CN204898660U CN 204898660 U CN204898660 U CN 204898660U CN 201520358089 U CN201520358089 U CN 201520358089U CN 204898660 U CN204898660 U CN 204898660U
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- pile
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- plucking
- tube core
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Abstract
The utility model provides a resistance to compression resistance to plucking composite pile under A corrosive environment, it comprises an at least pile cutoff, and respectively this pile cutoff comprises excel in prestressed concrete pipe pile and tensile resistance to compression tube core, this tensile resistance to compression tube core and prestressed concrete pipe pile's the interior wall connection of should excelling in. Adopt material and construction method commonly used for resistance to compression tensile composite pile not only reaches the operation requirement that can satisfy under the special ambient condition, also congeals native precast pile than mixing of normal adoption at present and has improved the durability, the economical rationality has been realized, construction convenience's effect. Just the utility model discloses a material and construction method commonly used make it to reach performance and the life requirement that can satisfy under the special ambient condition.
Description
Technical field
The utility model belongs to composite pile field, espespecially a kind of resistance to compression resistance to plucking composite pile be applicable under corrosive environment.
Background technology
At present, along with the development of process of industrialization, industrial enterprise and realty industry increase rapidly, soil is also more and more nervous, in order to alleviate the Land Demand of growing tension, many local governments take to be pushed ahead in coastline periphery coastal mode of filling out sea, open up new soil to be used for adding the area such as Industry Development Area, development district of new technology.But these regional groundwater table are high, underground water or soil have corrosivity in various degree to reinforcing bar and concrete, SO in the regional underground water had, soil
4 2-, CL
-ion concentration is high, the condition of strong corrosive environment of the regulation that has been up to state standards, and the buoyancy that building or structure self local or entirety descend water to produce irresistibly, some technical measures guarantee construction of structures stabilities need be adopted.For the stability against floating sex chromosome mosaicism in general environment area, the method for elongated employing is increase counterweight, sets up the measure such as anti-float anchor rod and uplift pile.But increase counterweight to affect cannot be arranged on coastal area by space enrironment, and set up anti-float anchor rod and cannot be applied in the environment of deep-etching, therefore, cause in the environment of deep-etching, usually adopt the method for anti-floating (pulling out) stake to ensure the stability of building.
And in the prior art, generally adopt prefabricated reinforced concrete uplift pile only.Because concrete component is SO in water and soil
4 2-, CL
-under the corrosion working conditions that ion concentration is high, first SO
4 2-ion pair concrete surface prolonged permeation, SO
4 2-ion and concrete produce chemical reaction and cause concrete to produce fine be full of cracks, and concrete cover is corroded; Then through CL
-the prolonged permeation of ion corrodes, once reach rebar surface, and CL
-with reinforcing bar generation chemical reaction, reinforcing bar starts corrosion, CL
-be crystal corrosion to the corrosion of reinforcing bar, the volume of reinforcing bar starts to expand, and causes concrete to chap, causes the stripping of concrete cover, finally cause reinforced concrete member intensity greatly to decline.Therefore in " Code for design of corrosion prevention of industrial buildings " GB50046-2008, under regulation strong corrosive environment condition, concrete pile should adopt precast reinforced concrete pile, but the decay resistance of raising pile concrete should be taked, increase the safeguard procedures such as concrete affluence amount or external coating erosion shield, to solve SO in underground water or soil
4 2-, CL
-the endurance issues of the concrete pile under the condition of the corrosive environment that ion concentration is high.
And improve the concrete measure that pile body coagulates the corrosion resistance protection of soil, the method of usual employing improves strength grade of concrete, the portland cement adopting sulfate resistance, the Admixture mixing sulfate resistance and mineral admixture etc. to improve concrete anti-permeability performance, reduces concrete cracking; Increase pile body protective layer thickness to ensure bearing capacity of pile; Pile body external coating erosion shield etc.; But it is good that concrete characteristic is compressive property, tension is weak, under tension stress, concrete component is work with cracking, and this certainly will cause in use procedure, even if adopt the durability of the pile body of above measure prefabricated reinforced concrete uplift pile also to have a greatly reduced quality.
And exist in work progress corrosion-inhibiting coating friction damage, uplift pile work with cracking, preformed pile longer time the problem such as transport difficult
Utility model content
The purpose of this utility model, is to provide a kind of resistance to compression resistance to plucking composite pile be applicable under corrosive environment, can in coastal sea-filling region briny environment, underground water or soil SO
4 2-, CL
-under the condition of the corrosive environment that ion concentration is high, solve build, structure own wt can not meet stability requirement, need adopt that measure guarantee is built, the problem of structure stability.
For achieving the above object, the utility model is by the following technical solutions:
A resistance to compression resistance to plucking composite pile under corrosive environment, it is made up of at least one pile cutoff, and respectively this pile cutoff is made up of high-strength prestressed concrete pipe pile and tension resistance to compression tube core, and this tension resistance to compression tube core is connected with the inwall of this high-strength prestressed concrete pipe pile.
In a preferred embodiment, when carrying out upper and lower pile extension by plural pile cutoff, two neighbouring these pile cutofves by the pile joint steel plate that is provided with in this upper pile cutoff lower end with under the cuff that is provided with of this pile cutoff upper end be connected, the inwall embolism of this tension resistance to compression tube core and this high-strength prestressed concrete pipe pile is bonding.
In a preferred embodiment, when carrying out upper and lower pile extension by plural pile cutoff, this pile cutoff joint gone up most is long is maximum joint length.
In a preferred embodiment, each described tension resistance to compression tube core forms by arranging reinforcing cage in slightly expanded concrete tube core.
In a preferred embodiment, described reinforcing cage is aided with tube core reinforcing cage spiral stirrup by tube core anti-punching shear bar and forms.
In a preferred embodiment, the length of the described reinforcing cage in same described pile cutoff is identical with described high-strength prestressed concrete pipe pile, and the described reinforcing cage external diameter in same described pile cutoff is that described high-strength prestressed concrete pipe pile internal diameter deducts 100mm.
In a preferred embodiment, the inwall of described high-strength prestressed concrete pipe pile is rough inner surface.
In a preferred embodiment, the described pile cutoff bottom of lowermost end is provided with pile top, and this pile cutoff of top connects cushion cap or sole plate.
In a preferred embodiment, described is cross steel pile top or tapered steel pile top, is provided with bed course below described cushion cap or described sole plate.
In a preferred embodiment, described pile joint steel plate and described cuff are arranged with thermal contraction polyethylene mantle respectively.
The utility model beneficial effect is: adopt conventional material and constructure scheme, resistance to compression tension composite pile is not only reached can meet the instructions for use under special environment condition, and also the normal coagulation adopted coagulates native preformed pile and improves durability comparatively at present; Achieve economical rationality, the effect of easy construction.And the utility model adopts conventional material and construction method, make it to reach and can meet functional performance under special environment condition and life requirement.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the stressed schematic diagram in inside of the present utility model.
Fig. 3 is the stressed schematic diagram of overall structure of the present utility model.
Detailed description of the invention
Below only with embodiment, the enforcement aspect that the utility model is possible is described, but and be not used to limit the utility model institute for protect category, first give chat bright.
As shown in Figure 1 to Figure 3, the utility model provides the composite pile of the resistance to compression resistance to plucking under a kind of corrosive environment, it is made up of at least one pile cutoff 10, respectively this pile cutoff 10 is made up of high-strength prestressed concrete pipe pile 2 and tension resistance to compression tube core 3, and this tension resistance to compression tube core 3 is connected with the inwall of this high-strength prestressed concrete pipe pile 2.
Time long for demand stake, can be formed by multiple pile cutoff about 10 pile extension, neighbouring two these pile cutofves 10 by the pile joint steel plate 8 that is provided with in this upper pile cutoff 10 lower end with under the cuff 9 that is provided with of this pile cutoff 10 upper end be connected.Owing to using in corrosive environment, for pile joint steel plate 8 and cuff 9, thicker steel plate need be adopted to make, increase the corrosion allowance adding steel part; Or pile joint steel plate 8 and cuff 9 can be adopted to be arranged with the mode of thermal contraction polyethylene mantle, to protect.Consider that high-strength prestressed concrete pipe pile 2 upper end is subject to larger pulling force, pulling force reduces gradually with the degree of depth, during for needs high-strength prestressed concrete pipe pile 2 pile extension, the joint length of the high-strength prestressed concrete pipe pile 2 of this pile cutoff 10 gone up most in use procedure should adopt maximum joint long, and the joint of this pile cutoff 10 namely gone up most is long is maximum joint length.
As Fig. 1 shows, in a preferred embodiment, each described tension resistance to compression tube core 3 forms by arranging reinforcing cage 12 in slightly expanded concrete tube core 11.
Preferably, described reinforcing cage 12 is aided with tube core reinforcing cage spiral stirrup 5 by tube core anti-punching shear bar 4 and forms.
In concrete enforcement, for the use of, this pile cutoff 10 bottom of lowermost end is provided with pile top 1, and this pile cutoff 10 of top connects cushion cap 6 or sole plate.
With regard to an embodiment, force-mechanism of the present utility model is described below:
In pile body resistance to plucking process of the present utility model, buoyancy (pulling force that the pile body of the present utility model is subject to) F1 of superstructure (cushion cap 6 or sole plate) transmits vertical tension by tension resistance to compression tube core 3; The tension resistance to compression tube core 3 of the resistance to compression resistance to plucking composite pile under corrosive environment is microdilatancy reinforced concrete structure, produces microdilatancy Horizontal Tension to high-strength prestressed concrete pipe pile 2.As shown in Figure 1, preferably, the inwall 13 of high-strength prestressed concrete pipe pile 2 is rough inner surface, makes tension resistance to compression tube core 3 and high-strength prestressed concrete pipe pile 2 produce cementation, forms cementation power F2; Due to the microdilatancy tension force F3 of tension resistance to compression tube core 3 and the cementation of tension resistance to compression tube core 3 and high-strength prestressed concrete pipe pile 2, make to produce embolism effect between tension resistance to compression tube core 3 and high-strength prestressed concrete pipe pile, realize under embolism effect compared with the resistance to compression resistance to plucking composite pile under corrosive environment mass action (the microdilatancy Horizontal Tension of tension resistance to compression tube core 3 pairs of high-strength prestressed concrete pipe piles 2 and cementation, as shown in Figure 2); Finally resist pile body vertical tension by the side friction F4 of the pile peripheral earth compared with the resistance to compression resistance to plucking composite pile under corrosive environment, realize resistance to plucking object (as shown in Figure 3).
In actual use, the high-strength prestressed concrete pipe pile 2 that the resistance to compression resistance to plucking composite pile under corrosive environment adopts, adopt the model that wall thickness is thinner, such as diameter is the stake of 500mm as far as possible, preferably adopts 100mm wall thickness; Diameter is the stake of 600mm, preferably adopt 110mm wall thickness, make the tube core diameter of high-strength prestressed concrete pipe pile as far as possible large, when same unit for single-pile vertical anti-pulling bearing capacity, effective uplift effect of the die sections of high-strength prestressed concrete pipe pile 2 can be improved after inserting tension resistance to compression tube core 3, and according to the tube core cross section of high-strength prestressed concrete pipe pile 2 and pulling force determination tube core tensile reinforcement 4; Tension resistance to compression tube core 3 by with the effect of high-strength prestressed concrete pipe pile 2 embolism by pull transfer to high-strength prestressed concrete pipe pile 2, vertical tension is produced to high-strength prestressed concrete pipe pile 2.High-strength prestressed concrete pipe pile 2 is due to the compressive pre-stress of the prestressed reinforcement of self, under force-free state, its pile concrete is in pressured state, in use by controlling the pile body uplift resistance of high-strength prestressed concrete pipe pile 2, the pile concrete of high-strength prestressed concrete pipe pile 2 is made not produce tensile stress, the pile body of such high-strength prestressed concrete pipe pile 2 would not produce crack, ensure that the anti-permeability performance of high-strength prestressed concrete pipe pile 2, also ensure that tension resistance to compression tube core 3 is not by underground water and soil balance simultaneously, ensure that the durability of resistance to compression tension composite pile.
Now illustrate with a preferred embodiment, procedure of processing during Specific construction.
First carry out high-strength prestressed concrete pipe pile 2 to purchase, this is very convenient in coastal area buying; Pile top 1 can be cross steel pile top or tapered steel pile top according to soil property situation, to carry out back cover to the resistance to compression resistance to plucking composite pile under corrosive environment, then adopts static pressure or impact pile driving all can carry out pile follower;
Treat that high-strength prestressed concrete pipe pile 2 is constructed complete; According to the concrete pipe core diameter assembling reinforcement cage 12 of high-strength prestressed concrete pipe pile 2, the length of reinforcing cage 12 is with high-strength prestressed concrete pipe pile 2, the quantity of tube core anti-punching shear bar 4 requires to arrange according to anti-pulling capacity, and the external diameter of reinforcing cage 12 is that the internal diameter of high-strength prestressed concrete pipe pile 2 deducts 100mm; The topping of such steel bar stress cage 12 is 50mm, and the pile lining of high-strength prestressed concrete pipe pile 2 becomes the protection partition wall of tension resistance to compression tube core 3 simultaneously.
Treat that reinforcing cage 12 is in place, adopt C40 microdilatancy pea gravel concreten to carry out the filling core of the tube core of high-strength prestressed concrete pipe pile 2, form slightly expanded concrete tube core 11, so far pile is complete.
After 28 days, the concrete of slightly expanded concrete tube core 11 reaches design strength, carries out test pile, meets after bearing capacity until test pile, can carry out pile foundation full-scale construction; After the pile foundation construction stage, qualifiedly after testing Superstructure Construction can be carried out.For convenience of follow-up use, this tube core anti-punching shear bar in this pile cutoff gone up most protrudes out the length of 40 times of these tube core anti-punching shear bar diameters.
In sum, the utility model not only realizes its resistance to plucking advantage, also pile body degree of safety is substantially increased for bearing vertical pressure, for bearing vertical pressure and bear the building of vertical tension, structure pile foundation again, use the resistance to compression resistance to plucking composite pile under corrosive environment can obtain the effect of killing two birds with one stone, not only save cost, meet functional performance requirement under special environment condition simultaneously.
And the resistance to compression resistance to plucking composite pile under corrosive environment is according to gathering materials on the spot, the principle of easy construction adopts high-strength prestressed concrete pipe pile and tension resistance to compression tube core composition, and tension resistance to compression tube core is reinforcing bar+slightly expanded concrete structure; In pile body resistance to plucking process, superstructure buoyancy transmits vertical tension by tension resistance to compression tube core 3, is formed the mass action of the resistance to compression resistance to plucking composite pile under corrosive environment by high-strength prestressed concrete pipe pile 2 and the embolism effect of tension resistance to compression tube core 3; Finally resist pile body vertical tension by the side friction of pile peripheral earth, realize resistance to plucking object; Wherein the steel concrete of tension resistance to compression tube core 3 is the stressed major part of resistance to plucking, the good endurance of high-strength prestressed concrete pipe pile own is as the protection wall of tension resistance to compression tube core 3, make the resistance to compression resistance to plucking composite pile under corrosive environment namely can meet resistance to plucking function, also can meet requirement for anticorrosion; Solve the problems such as corrosion-inhibiting coating friction damage in precast reinforced concrete pile work progress, uplift pile work with cracking, the longer transport difficult of preformed pile; SO in water, soil can be met again simultaneously
4 2-, CL
-the life requirement of the corrosive environment concrete structure member that ion concentration is high; Construction technology is simple, good endurance.
Claims (10)
1. the resistance to compression resistance to plucking composite pile under a corrosive environment, it is characterized in that, it is made up of at least one pile cutoff, and respectively this pile cutoff is made up of high-strength prestressed concrete pipe pile and tension resistance to compression tube core, and this tension resistance to compression tube core is connected with the inwall of this high-strength prestressed concrete pipe pile.
2. the resistance to compression resistance to plucking composite pile under corrosive environment according to claim 1, it is characterized in that, when carrying out upper and lower pile extension by plural pile cutoff, two neighbouring these pile cutofves by the pile joint steel plate that is provided with in this upper pile cutoff lower end with under the cuff that is provided with of this pile cutoff upper end be connected, the inwall embolism of this tension resistance to compression tube core and this high-strength prestressed concrete pipe pile is bonding.
3. the resistance to compression resistance to plucking composite pile under corrosive environment according to claim 1 and 2, is characterized in that, when carrying out upper and lower pile extension by plural pile cutoff, this pile cutoff joint gone up most is long is maximum joint length.
4. the resistance to compression resistance to plucking composite pile under corrosive environment according to claim 1 and 2, is characterized in that, each described tension resistance to compression tube core forms by arranging reinforcing cage in slightly expanded concrete tube core.
5. the resistance to compression resistance to plucking composite pile under corrosive environment according to claim 4, is characterized in that, described reinforcing cage is aided with tube core reinforcing cage spiral stirrup by tube core anti-punching shear bar and forms; And/or,
This tube core anti-punching shear bar in this pile cutoff gone up most protrudes out the length of 40 times of these tube core anti-punching shear bar diameters.
6. the resistance to compression resistance to plucking composite pile under corrosive environment according to claim 4, it is characterized in that, the length of the described reinforcing cage in same described pile cutoff is identical with described high-strength prestressed concrete pipe pile, and the described reinforcing cage external diameter in same described pile cutoff is that described high-strength prestressed concrete pipe pile internal diameter deducts 100mm.
7. the resistance to compression resistance to plucking composite pile under corrosive environment according to claim 1 and 2, is characterized in that, the inwall of described high-strength prestressed concrete pipe pile is rough inner surface.
8. the resistance to compression resistance to plucking composite pile under corrosive environment according to claim 1 and 2, is characterized in that, the described pile cutoff bottom of lowermost end is provided with pile top, and this pile cutoff of top connects cushion cap or sole plate.
9. the resistance to compression resistance to plucking composite pile under corrosive environment according to claim 8, is characterized in that, described pile top is cross steel pile top or tapered steel pile top, is provided with bed course below described cushion cap or described sole plate.
10. the resistance to compression resistance to plucking composite pile under corrosive environment according to claim 2, is characterized in that, described pile joint steel plate and described cuff are arranged with thermal contraction polyethylene mantle respectively.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520358089.9U CN204898660U (en) | 2015-05-28 | 2015-05-28 | Resistance to compression resistance to plucking composite pile under A corrosive environment |
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| CN201520358089.9U CN204898660U (en) | 2015-05-28 | 2015-05-28 | Resistance to compression resistance to plucking composite pile under A corrosive environment |
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| CN204898660U true CN204898660U (en) | 2015-12-23 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107366283A (en) * | 2017-08-24 | 2017-11-21 | 国家电网公司 | A kind of transmission line of electricity prefabricated tubular pile corrosion protection design method |
| CN110847167A (en) * | 2019-11-27 | 2020-02-28 | 研建创科(北京)科技有限公司 | Combined enhanced uplift anchor rod device and construction method |
-
2015
- 2015-05-28 CN CN201520358089.9U patent/CN204898660U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107366283A (en) * | 2017-08-24 | 2017-11-21 | 国家电网公司 | A kind of transmission line of electricity prefabricated tubular pile corrosion protection design method |
| CN110847167A (en) * | 2019-11-27 | 2020-02-28 | 研建创科(北京)科技有限公司 | Combined enhanced uplift anchor rod device and construction method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151223 Termination date: 20200528 |
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| CF01 | Termination of patent right due to non-payment of annual fee |