CN202164596U - Composite construction of steel pipe sheet piles - Google Patents
Composite construction of steel pipe sheet piles Download PDFInfo
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- CN202164596U CN202164596U CN2011202273880U CN201120227388U CN202164596U CN 202164596 U CN202164596 U CN 202164596U CN 2011202273880 U CN2011202273880 U CN 2011202273880U CN 201120227388 U CN201120227388 U CN 201120227388U CN 202164596 U CN202164596 U CN 202164596U
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Abstract
The utility model discloses a composite construction of a plurality of steel pipe sheet piles, comprising a plurality of vertical steel pipe piles, a plurality of convex steel pipe piles and a plurality of concave steel pipe piles. The convex steel pipe piles and the concave steel pipe piles with corresponding quantity are sequentially arranged among the steel pipe piles. The outer-edge pipe wall of each steel pipe pile is respectively provided with a convex plate connector and a concave plate connector with two symmetrical positions and different opening directions. Two sides of each steel pipe pile and each concave steel pipe pile are respectively and integratively bent into a first connecting flange and a second connecting flange which are symmetrical with each other, wherein the first connecting flange is buckled to the convex plate connector with the corresponding position and the second connecting flange, and the second connecting flange is buckled to the concave plate connector with the corresponding position. Therefore, the directivity problem of pilling does not need to be considered, the condition of construction mistake can be effectively reduced, and the convenience and the efficiency of construction can be further greatly improved.
Description
Technical field
The special-purpose sheet pile wall of a kind of Foundation Design of the utility model is particularly relevant for a kind of steel pipe sheet pile composite construction.
Background technology
Steel pipe pile and steel sheet pile are unit integral in the coffering, because of its stable material quality, reliable in quality, in coffering, are widely used already.Similarly be when constructing base configurations such as bridge pier, the upright bulkhead wall of extra large side, all can apply to a large amount of steel pipe piles and steel sheet pile especially, be beneficial to the carrying out of coffering.Generally speaking, the main considered of coffering stable with the antiseepage requirement, more can be, and different security grade and standard are arranged according to the construction environment of different depth, to guarantee after coffering is accomplished best stability and barrier properties being provided.
Someone attempts steel pipe pile and steel sheet pile one solder joint is steel pipe sheet pile, hopes further strengthening stability and barrier properties, and for example TaiWan, China letters patent book number is counted " the binding structure of steel pipe sheet pile and steel pipe sheet pile " I295331 number.Face is welded with the sheet material of H shaped steel around in the steel pipe pile both sides, and size and structure have nothing in common with each other to constitute pin and box sub, and male joint is to form the more small-sized wing plate medial surface of female joint and the space that the web face is centered on of being embedded in.So when a plurality of steel pipe sheet pile of assembly, but the upright steel sheet pile of individual groups for want of, and the anxiety of directionality restriction can't adjusted and have to the spacing of steel pipe sheet pile, and the shape of steel pipe sheet pile probably is unfavorable for piling up carrying.In addition; When being made for to the H shaped steel of female joint or being central cutout; Supply the male joint of T shape to embed, possibly cause the structural deterioration of H shaped steel, T shape or the male joint of C shape then must be extended with one section sufficient length; To arrive the female joint of position, probably be difficult to avoid not receiving stress flexural deformation at another H shaped steel middle position.
Therefore, generally in coffering, be still with the binding of steel pipe pile and steel sheet pile and construct,, have more lower cost and practicality to avoid taking place the problems referred to above as formant.In the coffering that utilizes steel pipe pile and steel sheet pile, normally with steel pipe pile as king pile, and between two steel pipe piles, get suitable distance, so that a plurality of steel sheet piles to be set betwixt.Yet; The opening of the hookup of steel pipe pile was towards same direction in the past; When construction must each steel pipe pile of reasonable care direction is set, if because of carelessness wherein a steel pipe pile mistake is set, then must remove in regular turn by wrong steel pipe pile is set backward; And the action of driving piles again, so the convenience and the efficient of construction have been reduced significantly.
The utility model content
In order to solve above-mentioned problem, the main purpose of the utility model is to provide a kind of steel pipe sheet pile composite construction, needn't consider the directional problems of driving piles, and effectively reduces the wrong situation of construction, more significantly promotes the convenience and the efficient of construction.
The purpose of the utility model and solve its technical problem and adopt following technical scheme to realize.
The utility model discloses a kind of steel pipe sheet pile composite construction; Comprise a plurality of steel pipe piles that stand vertically; Between between those steel pipe piles, be provided with at least one steel sheet pile; The outer rim tube wall of each steel pipe pile is provided with a two positions symmetry and opening flange hookup and the notch board hookup towards different directions; The both sides one of each steel sheet pile is bent into first coupling flange and second coupling flange of two symmetries, and wherein those first coupling flanges fasten this flange hookup to correspondence position with upright slide guide mode, and those second coupling flanges fasten this notch board hookup to correspondence position with upright slide guide mode.
The purpose of the utility model and solve its technical problem and also can adopt following technical measures further to realize.
Preferably, those steel pipe piles are the cylinder rigid body of hollow.
Preferably, this flange hookup and this notch board hookup solder bond are in the outer rim tube wall of each steel pipe pile.
Preferably, the length of those steel pipe piles is more than or equal to arbitrary length of those male steel sheet piles and those spill steel sheet piles.
Preferably, arbitrary width of those male steel sheet piles and those spill steel sheet piles is not more than the radius of those steel pipe piles.
Preferably, those steel pipe piles are the square column rigid body of hollow.
Preferably, those steel pipe piles are the circular columns rigid body of hollow.
Further, each steel sheet pile is made up of a male steel sheet pile and a spill steel sheet pile, and this first coupling flange is formed at the both sides of this male steel sheet pile, and this second coupling flange is formed at the both sides of this spill steel sheet pile.
Those steel sheet piles can be the concavo-convex steel sheet pile of S shape bending.
Those steel sheet piles can be in-line.
Can find out that by above technical scheme the steel pipe sheet pile composite construction of the utility model has the following advantages and effect:
Can be by steel pipe pile, male steel sheet pile and spill steel sheet pile as one of them technological means; Because the outer rim tube wall of each steel pipe pile is provided with two positions symmetry and opening flange hookup and the notch board hookup towards different directions; And the coupling flange of male steel sheet pile fastens to the flange hookup of correspondence position and the coupling flange of spill steel sheet pile, and the coupling flange of spill steel sheet pile fastens the notch board hookup to correspondence position.Therefore, needn't consider the directional problems of driving piles, effectively reduce the wrong situation of construction, more significantly promote the convenience and the efficient of construction.
Description of drawings
Fig. 1: according to the schematic perspective view of a kind of steel pipe sheet pile composite construction of first specific embodiment of the utility model.
Fig. 2: according to the sectional perspective enlarged drawing of the steel pipe sheet pile composite construction of first specific embodiment of the utility model.
Fig. 3: according to the sectional schematic diagram and the partial enlarged drawing of the steel pipe sheet pile composite construction of first specific embodiment of the utility model.
Fig. 4: according to the schematic perspective view of steel pipe sheet pile composite construction in a variant of first specific embodiment of the utility model.
Fig. 5: according to the sectional schematic diagram of steel pipe sheet pile composite construction in a variant of first specific embodiment of the utility model.
Fig. 6: according to the sectional schematic diagram of a kind of steel pipe sheet pile composite construction of second specific embodiment of the utility model.
Fig. 7: according to the schematic perspective view of a kind of steel pipe sheet pile composite construction of the 3rd specific embodiment of the utility model.
Fig. 8: according to the sectional schematic diagram of the steel pipe sheet pile composite construction of the 3rd specific embodiment of the utility model.
Fig. 9: according to the schematic perspective view of steel pipe sheet pile composite construction in a variant of the 3rd specific embodiment of the utility model.
Figure 10: according to the sectional schematic diagram of steel pipe sheet pile composite construction in a variant of the 3rd specific embodiment of the utility model.
[critical element symbol description]
100 steel pipe sheet pile composite constructions;
110 steel pipe piles;
111 flange hookups; 112 notch board hookups;
120 male steel sheet piles; 121 first coupling flanges;
130 spill steel sheet piles; 131 second coupling flanges;
200 steel pipe sheet pile composite constructions;
220 male steel sheet piles;
300 steel pipe sheet pile composite constructions;
311 hookups;
320 steel sheet piles; 321 coupling flanges.
The specific embodiment
Below will cooperate appended diagram to specify the embodiment of the utility model; It should be noted that so those diagrams are the sketch map of product, the shape and the dimension scale of the actual enforcement that is shown as; Only as a kind of concrete design of putting property of choosing, so that clearer description to be provided.In the equivalence embodiment of different application, the shape of element, size and quantity all can dwindle, amplify or simplify.
According to first specific embodiment of the utility model, a kind of steel pipe sheet pile composite construction is illustrated in the schematic perspective view of Fig. 1, the sectional perspective enlarged drawing of Fig. 2, sectional schematic diagram and the partial enlarged drawing of Fig. 3.This steel pipe sheet pile composite construction 100 comprises a plurality of steel pipe pile that stands vertically 110, a plurality of male steel sheet pile 120 and a plurality of spill steel sheet pile 130.
See also Fig. 1 and shown in Figure 2; Be provided with quantity corresponding at least one male steel sheet pile 120 and at least one spill steel sheet pile 130 between those steel pipe piles 110 between in regular turn, for example: between two steel pipe piles 110, can be provided with a male steel sheet pile 120 and a spill steel sheet pile 130.In the present embodiment, those steel pipe piles 110 can be the cylinder rigid body of hollow, for example can be seamless steel pipe or via the made steel pipe of electric arc electric welding, so that preferable barrier properties to be provided.In another variant, like Fig. 4 and shown in Figure 5, those steel pipe piles 110 can be the square column rigid body of hollow, make the exterior marginal tube wall energy of each steel pipe pile 110 that comparatively smooth bonding surface is provided, with can be in response to different construction environments.Perhaps, in other possible preferable kenel, the section configuration of those steel pipe piles 110 also can be regular hexagon, octagon or the like, with in response to various engineering demand.In detail; The length of those steel pipe piles 110 can equal arbitrary length of those male steel sheet piles 120 and those spill steel sheet piles 130; For example: the length of each steel pipe pile 110 and the length of each steel sheet pile all can be 28 meters (m); After those steel pipe piles 110 and those steel sheet piles set up, each steel pipe pile 110 appear the position that appears that the position is aligned in each steel sheet pile.Perhaps; The length of those steel pipe piles 110 can be greater than the arbitrary length of those male steel sheet piles 120 with those spill steel sheet piles 130; For example: the length system of each steel pipe pile 110 can be 31 meters (m); And the length of each steel sheet pile can be 28 meters (m), so identification that is beneficial to construct and location are given prominence to than the position that appears of those steel sheet piles in the position that appears of those steel pipe piles 110 after piling is accomplished.In addition; The exterior marginal tube wall thickness of those steel pipe piles 110 can be between 13 millimeters (mm) to 15 millimeters (mm); And those steel pipe piles 110 can mate in response to different length has corresponding thickness; Usually the length of those steel pipe piles 110 is long more, and then the thickness of those steel pipe pile 110 outer rim tube walls is also big more.
See also Fig. 2 and shown in Figure 3, the outer rim tube wall of each steel pipe pile 110 is provided with a two positions symmetry and opening flange hookup 111 and the notch board hookup 112 towards different directions, and the opening indication is the caulking groove opening of hookup.For example; In Fig. 2; This flange hookup 111 can be incorporated into the right-hand of each steel pipe pile 110,112 lefts that are incorporated into each steel pipe pile 110 of this notch board hookup so that this flange hookup 111 and this notch board hookup 112 can balanced configurations in each steel pipe pile 110 and not limited by directionality.In the present embodiment, this flange hookup 111 is the strip button hook with welded plate face with this notch board hookup 112, forms the caulking groove of a little opening in the button hook.In a preferable form; But the welded plate face solder bond of this flange hookup 111 and this notch board hookup 112 is in the outer rim tube wall of each steel pipe pile 110; Even can be by a plurality of fixtures (not drawing among the figure), for example before welding: rivet, bolt or the like be fixed to each steel pipe pile 110 with this flange hookup 111 with this notch board hookup 112 in advance; Further carry out the welding action again, to reach firm and seamless marriage relation.In another variant; This flange hookup 111 also can increase number of configured in response to the construction demand with this notch board hookup 112; To cooperate construction environment at that time; For example: be positioned at the steel pipe pile that cofferdam corner or reinforcement are used, its flange hookup 111 can many assembly place the exterior marginal tube wall with notch board hookup 112, to change the orientation of those steel pipe piles 110.
The both sides one of each male steel sheet pile 120 is bent into first coupling flange 121 of two symmetries, and the both sides one of each spill steel sheet pile 130 is bent into second coupling flange 131 of two symmetries.Wherein, The front end of those first coupling flanges 121 back bends towards the body of affiliated male steel sheet pile 120; And the front end of those second coupling flanges 131 also back bends towards the body of affiliated spill steel sheet pile 130, can not laterally take off the fastening relation of pulling out so can provide firmer.In a preferable kenel, between the plate body of each male steel sheet pile 120 and those first coupling flanges 121, and all can be integrated structure between the plate body of each spill steel sheet pile 130 and those second coupling flanges 131.Wherein, Alleged " one-body molded " be meant between the body and those first coupling flanges 121 of each male steel sheet pile 120, and neither needs utilize extra binding member to combine between the body of each spill steel sheet pile 130 and those second coupling flanges 131.
See also shown in Figure 3 again; Those first coupling flanges 121 fasten this flange hookup 111 and those second coupling flanges 131 to correspondence position with upright slide guide mode, and those second coupling flanges 131 fasten this notch board hookup 112 to correspondence position with upright slide guide mode.Generally speaking; When setting up those steel pipe piles 110 with those steel sheet piles; Those steel pipe piles 110 are accomplished in advance and are set and be fixed in construction place, and are reserved with certain clearance between those steel pipe piles 110, are beneficial to the setting of those male steel sheet piles 120 and those spill steel sheet piles 130.In the present embodiment; Arbitrary width of those male steel sheet piles 120 and those spill steel sheet piles 130 can be not more than the radius of those steel pipe piles 110; For example: the radius system of each steel pipe pile 110 can be 735 millimeters (mm), and the width of each male steel sheet pile 120 and each spill steel sheet pile 130 system can be 600 millimeters (mm).So; Gap between those steel pipe piles 110 is not more than the length of the diameter of a steel pipe pile 110; To guarantee after fastening those male steel sheet piles 120 and those spill steel sheet piles 130, can make those steel pipe piles 110, those male steel sheet piles 120 reach tight and seamless connection relation with those spill steel sheet piles 130.Perhaps; Change in the kenel one; Gap between those steel pipe piles 110 is greater than the length of the diameter of a steel pipe pile 110, between two steel pipe piles 110 can between be provided with two male steel sheet piles 120 and two spill steel sheet piles 130, so can adjust the quantity that is provided with of those steel pipe piles 110, those male steel sheet piles 120 and those spill steel sheet piles 130; And then change the section modulus of this steel pipe sheet pile composite construction 100, to meet the requirement of construction environment.Wherein, Be referred to as " section modulus (section modulus) " and be defined as " section to the area inertia moment of neutral axis/by the distance of neutral axis " to section top (or bottom); Common various different construction environments all have the regulation of considering of its section modulus; In general the section modulus of a structure is big more, and its flexing resistance is also good more.
In the utility model; Can concern a wherein technological means of conduct by the particular combination of those steel pipe piles 110, those male steel sheet piles 120 and those spill steel sheet piles 130; Because those flange hookups 111 and corresponding those notch board hookup 112 balanced configurations are in the outer rim tube wall of each steel pipe pile 110; And the opening of those flange hookups 111 and those notch board hookups 112 is towards different directions; So when piling, needn't consider the direction that is provided with of those steel pipe piles 110; Can guarantee that all those first coupling flanges 121 can fasten those flange hookups 111 and those second coupling flanges 131 to correspondence position, and guarantee that those second coupling flanges 131 can fasten those notch board hookups 112 to correspondence position.Therefore, the utility model can be considered the directional problems of driving piles, and effectively reduces the wrong situation of construction, more significantly promotes the convenience and the efficient of construction.
According to second specific embodiment of the utility model, another kind of steel pipe sheet pile composite construction is illustrated in Fig. 6.This steel pipe sheet pile composite construction 200 comprises the concavo-convex steel sheet pile of a plurality of steel pipe piles that stand vertically 110 and the bending of a plurality of S shapes.Wherein identical with first embodiment critical element will indicate with same-sign, so no longer detailed giving given unnecessary details.
In the present embodiment; Be provided with at least one concavo-convex steel sheet pile between between those steel pipe piles 110; Can constitute by 220 of two male steel sheet piles; The outer rim tube wall of each steel pipe pile 110 is provided with a two positions symmetry and opening flange hookup 111 and the notch board hookup 112 towards different directions; The both sides one of each male steel sheet pile 220 is bent into first coupling flange 121 and second coupling flange 131 of two symmetries, and wherein those first coupling flanges 121 fasten this flange hookup 111 to correspondence position with upright slide guide mode, and those second coupling flanges 131 fasten this notch board hookup 112 to correspondence position with upright slide guide mode.First coupling flange 121 and second coupling flange 131 of adjacent male steel sheet pile 220 can fasten each other.Therefore, can shorten engineering time and the complexity that reduces construction, more preferable barrier properties can be provided.
According to the 3rd specific embodiment of the utility model, another kind of steel pipe sheet pile composite construction is illustrated in Fig. 7 and Fig. 8.This steel pipe sheet pile composite construction 300 comprises a plurality of steel pipe piles that stand vertically 110 and a plurality of steel sheet piles 320 that are in-line.Wherein identical with first embodiment critical element will indicate with same-sign, so no longer detailed giving given unnecessary details.
In the present embodiment; Be provided with at least one steel sheet pile 320 between between those steel pipe piles 110; The outer rim tube wall of each steel pipe pile 110 is provided with two positions symmetry and the opening hookup 311 towards different directions; The both sides of each steel sheet pile 320 are two symmetries and the opening coupling flange 321 towards different directions, and wherein those coupling flanges 321 fasten those hookups 311 to correspondence position with upright slide guide mode.Therefore, can under the prerequisite of directionality of not considering to drive piles, accomplish the upright action of group of this steel pipe sheet pile composite construction 300 apace.In an alternate embodiment; Like Fig. 9 and shown in Figure 10; Those steel pipe piles 110 also can be the square column rigid body of hollow; After those steel pipe piles 110 and those steel sheet piles 320 make up, make this steel pipe sheet pile composite construction 300 that firm and more smooth stress surface is provided, to bear the impact of various external force.
The above embodiment is the preferred embodiment that proves absolutely that the utility model is lifted, and the protection domain of the utility model is not limited thereto.Being equal to that the technician in present technique field is done on the utility model basis substitutes or conversion, all within the protection domain of the utility model.The protection domain of the utility model is as the criterion with claims.
Claims (10)
1. steel pipe sheet pile composite construction; It is characterized in that; Comprise a plurality of steel pipe piles that stand vertically; Between between those steel pipe piles, be provided with at least one steel sheet pile, the outer rim tube wall of each steel pipe pile is provided with a two positions symmetry and opening flange hookup and the notch board hookup towards different directions, and the both sides one of each steel sheet pile is bent into first coupling flange and second coupling flange of two symmetries; Wherein those first coupling flanges fasten this flange hookup to correspondence position with upright slide guide mode, and those second coupling flanges fasten this notch board hookup to correspondence position with upright slide guide mode.
2. steel pipe sheet pile composite construction according to claim 1 is characterized in that, those steel pipe piles are the cylinder rigid body of hollow.
3. steel pipe sheet pile composite construction according to claim 1 is characterized in that, this flange hookup and this notch board hookup solder bond are in the outer rim tube wall of each steel pipe pile.
4. steel pipe sheet pile composite construction according to claim 1 is characterized in that, the length of those steel pipe piles is more than or equal to arbitrary length of those male steel sheet piles and those spill steel sheet piles.
5. steel pipe sheet pile composite construction according to claim 1 is characterized in that, arbitrary width of those male steel sheet piles and those spill steel sheet piles is not more than the radius of those steel pipe piles.
6. steel pipe sheet pile composite construction according to claim 1 is characterized in that, those steel pipe piles are the square column rigid body of hollow.
7. steel pipe sheet pile composite construction according to claim 1 is characterized in that, those steel pipe piles are the circular columns rigid body of hollow.
8. according to each described steel pipe sheet pile composite construction of claim 1 to 7; It is characterized in that; Each steel sheet pile is made up of a male steel sheet pile and a spill steel sheet pile; This first coupling flange is formed at the both sides of this male steel sheet pile, and this second coupling flange is formed at the both sides of this spill steel sheet pile.
9. according to each described steel pipe sheet pile composite construction of claim 1 to 7, it is characterized in that those steel sheet piles are the concavo-convex steel sheet pile of S shape bending.
10. according to each described steel pipe sheet pile composite construction of claim 1 to 7, it is characterized in that those steel sheet piles are in-line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202273880U CN202164596U (en) | 2011-06-30 | 2011-06-30 | Composite construction of steel pipe sheet piles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202273880U CN202164596U (en) | 2011-06-30 | 2011-06-30 | Composite construction of steel pipe sheet piles |
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| CN202164596U true CN202164596U (en) | 2012-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011202273880U Ceased CN202164596U (en) | 2011-06-30 | 2011-06-30 | Composite construction of steel pipe sheet piles |
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| CN (1) | CN202164596U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102877463A (en) * | 2012-09-28 | 2013-01-16 | 中国建筑第六工程局有限公司 | Recyclable foundation pit support pipe pile and application and recovery method thereof |
| CN105064375A (en) * | 2015-08-17 | 2015-11-18 | 化学工业岩土工程有限公司 | Construction method of retaining and water stopping structure of foundation pit support |
| CN105804102A (en) * | 2016-04-01 | 2016-07-27 | 上海城建市政工程（集团）有限公司 | Construction method for water cofferdam with double-barrel-shaped buckle piles |
| CN106192990A (en) * | 2016-09-22 | 2016-12-07 | 中船第九设计研究院工程有限公司 | A kind of steel pipe fore shaft node stake and making thereof |
| CN108049392A (en) * | 2017-11-16 | 2018-05-18 | 中国三冶集团有限公司 | A kind of steel plate pilework and water discharge method with drain function |
| CN108330952A (en) * | 2012-05-01 | 2018-07-27 | 新日铁住金株式会社 | The manufacturing method of steel wall |
| CN109183779A (en) * | 2018-11-08 | 2019-01-11 | 大连大学 | A kind of steel pipe steel plate combination stake building enclosure |
| CN114960623A (en) * | 2022-06-29 | 2022-08-30 | 湖北道泽勘测设计院有限公司 | Basic structure and construction method of PSLC construction method pile |
-
2011
- 2011-06-30 CN CN2011202273880U patent/CN202164596U/en not_active Ceased
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108330952A (en) * | 2012-05-01 | 2018-07-27 | 新日铁住金株式会社 | The manufacturing method of steel wall |
| CN102877463A (en) * | 2012-09-28 | 2013-01-16 | 中国建筑第六工程局有限公司 | Recyclable foundation pit support pipe pile and application and recovery method thereof |
| CN102877463B (en) * | 2012-09-28 | 2015-01-07 | 中国建筑第六工程局有限公司 | Recyclable foundation pit support pipe pile and application and recovery method thereof |
| CN105064375A (en) * | 2015-08-17 | 2015-11-18 | 化学工业岩土工程有限公司 | Construction method of retaining and water stopping structure of foundation pit support |
| CN105804102A (en) * | 2016-04-01 | 2016-07-27 | 上海城建市政工程（集团）有限公司 | Construction method for water cofferdam with double-barrel-shaped buckle piles |
| CN106192990A (en) * | 2016-09-22 | 2016-12-07 | 中船第九设计研究院工程有限公司 | A kind of steel pipe fore shaft node stake and making thereof |
| CN108049392A (en) * | 2017-11-16 | 2018-05-18 | 中国三冶集团有限公司 | A kind of steel plate pilework and water discharge method with drain function |
| CN109183779A (en) * | 2018-11-08 | 2019-01-11 | 大连大学 | A kind of steel pipe steel plate combination stake building enclosure |
| CN114960623A (en) * | 2022-06-29 | 2022-08-30 | 湖北道泽勘测设计院有限公司 | Basic structure and construction method of PSLC construction method pile |
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Decision date of declaring invalidation: 20200618 Decision number of declaring invalidation: 44785 Granted publication date: 20120314 |
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