CN104975596A - Steel pipe pile driving device for low-clearance work and construction method - Google Patents
Steel pipe pile driving device for low-clearance work and construction method Download PDFInfo
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- CN104975596A CN104975596A CN201510422828.0A CN201510422828A CN104975596A CN 104975596 A CN104975596 A CN 104975596A CN 201510422828 A CN201510422828 A CN 201510422828A CN 104975596 A CN104975596 A CN 104975596A
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Abstract
The invention relates to a steel pipe pile driving device for low-clearance work and a construction method and belongs to the technical field of constructional engineering. The steel pipe pile driving device for low-clearance work and the construction method are used for solving the problems that the pile driving construction period is long and the pile driving construction cost is high under the condition that the clearance above a construction field is limited. The steel pipe pile driving device for low-clearance work comprises an annular hammering plate, a limiting plate, a rotary pile frame and a drop hammer, wherein a through hole is formed in the middle of the limiting plate; the rotary pile frame is mounted on the limiting plate, and a motor rotor and a power device are arranged on the rotary pile frame; the drop hammer is hung on the rotary pile frame. The construction method comprises the steps that firstly, the limiting plate is fixed to the ground; secondly, an initial pile section is hoisted, so that the upper end of the first pile section is higher than the ground by a certain distance; thirdly, a first standard section is hoisted and is fixedly connected with the initial pile section; fourthly, the drop hammer is started, so that the drop hammer is made to knock the annular hammering plate repeatedly, in this way, a steel pipe pile is driven to sink to a designed position, and the rotary pile frame is adjusted to the horizontal position; and fifthly, other sections are hoisted one by one, steel pipe standard sections are welded, the drop hammer is started to drive the steel pipe pile to sink to the designed position, and thus pile driving construction of the whole steel pipe pile is completed.
Description
Technical field
The present invention relates to construction engineering technical field, the steel pipe pile pile-sinking device of particularly a kind of low clearance operation and construction method.
Background technology
Pile foundation has that distortion is little, bearing capacity is high, be applicable to mechanized construction, and can give full play to the advantages such as the supporting capacity of deep soil, is therefore widely used in the foundation basic construction of industry and civil building engineering.Compared with other pile-type, there is obvious superiority the aspects such as the penetration capability of steel pipe pile, resistant to bending rigidity, bearing capacity of single pile and spreading welding.
But steel pipe pile sinking construction generally needs open construction plant, the especially sinking apparatus of extra-high building, such as pile frame or handling appliance are usually up to tens meters.When there is high voltage cable, existing building (or structure) etc. above steel pipe pile construction operation place and having headroom limit for height to require, conventional pile sinking mode cannot be adopted to carry out steel pipe pile sinking construction.Usual employing temporarily removes the field quadratic method of obstruction to ensure the sinking construction of steel pipe pile, is recovered after to be onstructed again, and this can cause the prolongation of duration and produce the flat operating expenses of huge complementary field.
Summary of the invention
The object of the present invention is to provide a kind of steel pipe pile pile-sinking device and construction method of low clearance operation, when for solving that above construction plant, headroom is restricted, adopt the field quadratic method removing obstruction to ensure the sinking construction of steel pipe pile, thus cause long in time limit, that cost is high problem.
For solving the problems of the technologies described above, technical scheme of the present invention is as follows:
A steel pipe pile pile-sinking device for low clearance operation, described steel pipe pile is saved by some end to end and Steel tube standards communicated and forms, and described steel pipe pile pile-sinking device comprises: annular hammering plate, and described annular hammering plate is arranged in first pile section; Limiting plate, described limiting plate is fixedly installed on described steel pipe pile and treats on the ground of pile sinking position, and the middle part of described limiting plate is provided with one and saves with described Steel tube standard the through hole matched; Be installed on the rotatable pile frame above described limiting plate, described rotatable pile frame is provided with motor rotor and power set; Be hung on dropping hammer of being connected with described motor rotor on described rotatable pile frame and by cable wire, described in drop hammer and can move reciprocatingly along the stake heart of described steel pipe pile and annular hammering plate described in hammering.
Further, described annular hammering plate is provided with bracing members along its radius, and described bracing members is fixedly connected with first pile section inwall.
Further, described bracing members is 4, and 4 described bracing members are symmetrical arranged along described annular hammering plate circumference.
Further, be also provided with reinforcement steel plate between described bracing members and first pile section inwall, the height of described reinforcement steel plate is greater than the height of described bracing members.
Further, the outside being positioned at the described reinforcement steel plate above described bracing members is provided with buffer layer.
Further, described annular hammering plate upper surface is laid with yielding rubber pad.
Further, described limiting plate is provided with installing hole.
The construction method of the steel pipe pile pile-sinking device of low clearance operation, comprises the steps:
Step one, treat pile sinking position at described steel pipe pile ground on fix described limiting plate;
Step 2, lift described first pile section, described first pile section is sunk under the restriction of described through hole, and stops the sinking of described first pile section when the top certain distance above ground level of described first pile section;
Step 3, lift the first standard knot, make described first standard knot dock with described first pile section and be welded and fixed;
Step 4, install on described limiting plate described rotatable pile frame, lifting described in drop hammer, drop hammer described in making and aim at the stake heart of described steel pipe pile;
Step 5, start described power set, drop hammer described in making along the described stake heart and to move reciprocatingly annular hammering plate described in hammering, thus drive described steel pipe pile to sink down into design attitude, and described rotatable pile frame is regulated to make described rotatable pile frame parallel with described limiting plate;
Step 6, lift the second standard knot, make described second standard knot dock with described first standard knot and be welded and fixed;
Step 7, install on described limiting plate described rotatable pile frame, lifting described in drop hammer, drop hammer described in making and aim at the stake heart of described steel pipe pile; Start described power set, drop hammer described in making along the described stake heart and to move reciprocatingly annular hammering plate described in hammering, thus drive described steel pipe pile to sink down into design attitude, and regulate described rotatable pile frame to make described rotatable pile frame parallel with described limiting plate;
Step 8, repeating said steps six to described step 7, until complete the piling construction of whole described steel pipe pile.
Further, in described step 2, certain distance is 60cm ~ 80cm.
Compared with prior art, the technique effect that the present invention is useful is:
1, the steel pipe pile pile-sinking device of low clearance operation provided by the invention, comprise the annular hammering plate be arranged in first pile section, be fixedly installed on the ground limiting plate that steel pipe pile treats pile sinking position, the middle part of limiting plate is provided with one and saves with Steel tube standard the through hole matched; Be installed on the rotatable pile frame above limiting plate, rotatable pile frame is provided with motor rotor and power set; Be hung on dropping hammer of being connected with motor rotor on rotatable pile frame and by cable wire, drop hammer and can move reciprocatingly along the stake heart of steel pipe pile and hammering annular hammering plate.In piling construction process, direct hammering of dropping hammer is arranged on the annular hammering plate of the first pile section inside of steel pipe pile, compared with traditional pile-sinking method, the whereabouts scope of dropping hammer is become steel pipe pile pile body from steel pipe pile pile body top inner, thus reduce the requirement of steel pipe pile sinking construction to top construction headroom, and then normal steel pipe pile sinking construction under realizing adapting to place low-headroom condition.And steel pipe pile treats that the limiting plate that the ground of pile sinking position is fixedly installed facilitates first pile section to rely on the location of self gravitation sinking, and ensures the piling construction precision of first pile section.By installing rotatable pile frame above limiting plate, when carrying out the lifting of Steel tube standard joint and carry out the weld job of Steel tube standard joint above limiting plate, regulate rotatable pile frame to horizontal level, make rotatable pile frame parallel to the ground, thus vacate working space.After operation to be welded completes, again erect rotatable pile frame, make rotatable pile frame as the hoisting bracket dropped hammer.This pile-sinking device structure is simply firm, effectively reduces construction cost, improves construction quality and efficiency of construction.
2, the construction method of the steel pipe pile pile sinking of the low clearance operation of confession of the present invention, limiting plate is fixed on the ground first above pile sinking position; Secondly the first pile section of lifting, and make to stop sinking during the certain distance above ground level of first pile section stake top; Then lift the first standard knot, complete being welded to connect of the first standard knot and first pile section; Then start and drop hammer, make to drop hammer along the stake heart and do straight reciprocating motion hammering annular hammering plate, thus drive steel pipe pile to sink down into design attitude, and the rotatable pile frame that simultaneously fell; Then lift the second standard knot, and complete being welded and fixed of the second standard knot and the first standard knot; Then rotatable pile frame is turned to vertical position, make to drop hammer and aim at the stake heart of steel pipe pile, startup is dropped hammer to make to drop hammer along the stake heart and is done straight reciprocating motion hammering annular hammering plate, thus drives steel pipe pile to sink down into design attitude, and rotatable pile frame is turned to horizontal level; And repeat welded steel pipe standard knot section by section, and startup is dropped hammer, drive steel pipe pile sinks down into design attitude, thus completes the piling construction of whole steel pipe pile.This construction method reduces the requirement to upper clearance in steel pipe pile sinking construction process, can adapt to the piling construction of steel pipe pile under low-headroom condition, and easy and simple to handle, saves construction period and cost, has good promotional value.
Accompanying drawing explanation
Fig. 1 is the structural representation of the steel pipe pile pile-sinking device of the low clearance operation of one embodiment of the invention;
Fig. 2 is the scheme of installation of annular hammering plate in the steel pipe pile pile-sinking device of the low clearance operation of one embodiment of the invention;
Fig. 3 is the A-A sectional view of Fig. 2;
Fig. 4 is the structural representation of the limiting plate of the steel pipe pile pile-sinking device of the low clearance operation of one embodiment of the invention;
Fig. 5 to Figure 11 is the schematic diagram of construction method step one to the step 7 of the steel pipe pile pile sinking of the low clearance operation of one embodiment of the invention.
In figure:
The first pile section of 1-; 2-first standard knot; 3-second standard knot; 10-annular hammering plate; 11-bracing members; 12-reinforcement steel plate; 13-buffer layer; 14-yielding rubber pad; 20-limiting plate; 21-through hole; 22-pile frame installing hole; The rotatable pile frame of 30-; 31-drops hammer.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the steel pipe pile pile-sinking device of the low clearance operation that the present invention proposes and construction method are described in further detail.According to the following describes and claims, advantages and features of the invention will be clearer.It should be noted that, accompanying drawing all adopts the form that simplifies very much and all uses non-ratio accurately, only in order to object that is convenient, the aid illustration embodiment of the present invention lucidly.For sake of convenience, hereinafter described " on ", D score is consistent with the upper and lower direction of accompanying drawing, but this can not become the restriction of technical solution of the present invention.
The invention provides steel pipe pile pile-sinking device and the construction method of low clearance operation, for solving in steel pipe pile sinking construction, during owing to being subject to the restriction of place headway, adopting the method removing obstruction to carry out piling construction and cause claim for eot and the high problem of construction cost.
The structure composition of the steel pipe pile pile-sinking device of low clearance operation of the present invention is described in detail below in conjunction with Fig. 1 to Fig. 4.
Embodiment one
A steel pipe pile pile-sinking device for low clearance operation, steel pipe pile is saved by some end to end and Steel tube standards communicated and forms, and steel pipe pile pile-sinking device comprises annular hammering plate 10, and annular hammering plate 10 is arranged in first pile section 1; Limiting plate 20, limiting plate 20 is fixedly installed on steel pipe pile and treats on the ground of pile sinking position, and the middle part of limiting plate 20 is provided with one and saves with Steel tube standard the through hole 21 matched; Be installed on the rotatable pile frame 30 above limiting plate 20, rotatable pile frame 30 is provided with motor rotor and power set; Be hung on be connected with motor rotor on rotatable pile frame 30 and by cable wire drop hammer 31, dropping hammer 31 can move reciprocatingly along the stake heart of steel pipe pile and hammering annular hammering plate 10.
Specifically, steel pipe pile is saved by some end to end and Steel tube standards communicated and is welded section by section.The length of general Steel tube standard joint is 3-4 rice, and the length of whole steel pipe pile is about 30-40 rice.The action principle of the steel pipe pile pile-sinking device of low clearance operation of the present invention changes conventional hammering steel pipe pile pile body top to the method for forcing steel pipe pile to sink, and select hammering to be arranged on the annular hammering plate 10 of first pile section 1 inside of steel pipe pile, drop hammer 31 whereabouts scope become steel pipe pile pile body from steel pipe pile pile body top inner, thus reduce the requirement of steel pipe pile sinking construction to top construction headroom, and then normal steel pipe pile sinking construction under realizing adapting to place low-headroom condition.And steel pipe pile treats that the limiting plate 20 that the ground of pile sinking position is fixedly installed offers the through hole 21 of aperture slightly larger than first pile section 1 external diameter, with the location facilitating first pile section 1 to rely on self gravitation to sink, and ensures the piling construction precision of first pile section 1.The rotatable pile frame of installation is fixed by offering pile frame installing hole 22 on limiting plate 20, when carrying out the lifting of Steel tube standard joint and carry out the weld job of Steel tube standard joint above limiting plate 20, regulate rotatable pile frame 30 to horizontal level, make rotatable pile frame 30 parallel to the ground, thus vacate working space.After operation to be welded completes, again erect rotatable pile frame 30, make rotatable pile frame 30 as drop hammer 31 hoisting bracket.
Especially, in order to strengthen the pile strength of first pile section 1, first pile section 1 inwall is fixedly connected with bracing members 11, and bracing members 11 is arranged along the radius of annular hammering plate 10.Bracing members 11 is 4, and 4 bracing members 11 annularly hammering plate 10 circumference are symmetrical arranged.And (" soil plug effect " refers to open end steel pipe pile pile driving process, and a pile-end soil part is pressed against periphery, and a part pours in pipe and formed " soil plug " due to " the soil plug effect " of steel pipe pile in sinking watching; Soil plug is subject to the effect of tube wall frictional resistance will produce certain compression, soil plug height and inaccessible degree thereof and soil nature, caliber, wall thickness and to enter the factors such as the degree of depth of bearing stratum relevant, the bearing capacity of inaccessible degree direct influence end resistance performance and destruction proterties and stake.), for ensureing that the soil body clamp-oning steel pipe pile inside does not affect the 31 hammerings annular hammering plates 10 that drop hammer, annular hammering plate 10 and bracing members 11 are arranged on apart from about 2.0m place above first pile section 1 bottom.Meanwhile, in order to reduce 31 impacts that produce first pile section 1 of hammering annular hammering plate 10 repeatedly of dropping hammer, be also provided with reinforcement steel plate 12 between bracing members 11 and first pile section 1 inwall, the height of reinforcement steel plate 12 is greater than the height of bracing members 11.In addition, the outside being positioned at the reinforcement steel plate 12 above bracing members 11 is provided with buffer layer 13.Therefore, annular hammering plate 10 bear drop hammer 31 hammer force so that drive pile body to sink, bracing members 11 is set and reinforcement steel plate 12 is strengthened first pile section 1 pile strength, and be provided with buffer layer 13 on reinforcement steel plate 12 surface being positioned at annular hammering plate 10 upper end, reduce first pile section 1 because of the possibility even destroyed that deforms by hammer force, improve efficiency of construction and pile quality.While like this, in order to the vibration reducing annular hammering plate 10 and drop hammer between 31, reduce the loss of hammer force, annular hammering plate 10 upper surface is laid with yielding rubber pad 14.
Accordingly, the present embodiment additionally provides a kind of construction method of steel pipe pile pile sinking of low clearance operation.Incorporated by reference to reference to figure 5 to Figure 11, a kind of construction method of steel pipe pile pile sinking of low clearance operation, comprises the following steps:
As shown in Figure 5, S001: determine steel pipe pile pile sinking position and make marks on ground, limiting plate 20 is fixed on the ground for the treatment of pile sinking position at steel pipe pile;
As shown in Figure 6, S002: lift first pile section 1, first pile section 1 is sunk under the restriction of through hole 21, and the sinking of first pile section 1 is stopped when the top certain distance above ground level of first pile section 1, remove the silt on first pile section 1 top, water or greasy dirt simultaneously, the iron rust Angle polishing machine on first pile section 1 top plan and inclined-plane polishes, to prepare to be welded to connect the first standard knot 2;
As shown in Figure 7, S003: lift the first standard knot 2, makes the first standard knot 2 right with first pile section 1
Connect and be welded and fixed;
As shown in Figure 8, S004: rotatable pile frame 30 is installed on limiting plate and be adjusted to vertical position, lifting drops hammer 31, the stake heart of the 31 aligning steel pipe piles that make to drop hammer;
As shown in Figure 9, S005: start power set, making to drop hammer 31 to move reciprocatingly hammering annular hammering plate 10 along the stake heart, thus drives steel pipe pile to sink down into design attitude, and regulates rotatable pile frame 30 to horizontal level namely parallel to the ground;
As shown in Figure 10, S006: lift the second standard knot 3, makes the second standard knot 3 dock with the first standard knot 2 and be welded and fixed;
As shown in figure 11, S007: rotatable pile frame 30 is adjusted to vertical position, the stake heart of the 31 aligning steel pipe piles that make to drop hammer; Start power set, making to drop hammer 31 to move reciprocatingly hammering annular hammering plate 10 along the stake heart, thus drives steel pipe pile to sink down into design attitude, and regulates rotatable pile frame 30 to horizontal level;
S008: repeat S006 to S007, until complete the piling construction of whole steel pipe pile.
Especially, in step S002, certain distance is 60cm ~ 80cm, to facilitate the follow-up construction being welded to connect the first standard knot.
In sum, the steel pipe pile pile-sinking device of low clearance operation of the present invention, comprise the annular hammering plate be arranged in first pile section, be fixedly installed on the ground limiting plate that steel pipe pile treats pile sinking position, the middle part of limiting plate is provided with one and saves with Steel tube standard the through hole matched; Be installed on the rotatable pile frame above limiting plate, rotatable pile frame is provided with motor rotor and power set; Be hung on dropping hammer of being connected with motor rotor on rotatable pile frame and by cable wire, drop hammer and can move reciprocatingly along the stake heart of steel pipe pile and hammering annular hammering plate.In piling construction process, direct hammering of dropping hammer is arranged on the annular hammering plate of the first pile section inside of steel pipe pile, compared with traditional pile-sinking method, the whereabouts scope of dropping hammer is become steel pipe pile pile body from steel pipe pile pile body top inner, thus reduce the requirement of steel pipe pile sinking construction to top construction headroom, and then normal steel pipe pile sinking construction under realizing adapting to place low-headroom condition.And steel pipe pile treats that the limiting plate that the ground of pile sinking position is fixedly installed offers the through hole of aperture slightly larger than first pile section external diameter, with the location facilitating first pile section to rely on self gravitation sinking, and ensure the piling construction precision of first pile section.The rotatable pile frame of installation is fixed by offering pile frame installing hole on limiting plate, when carrying out the lifting of Steel tube standard joint and carry out the weld job of Steel tube standard joint above limiting plate, adjustment was fallen rotatable pile frame, made rotatable pile frame parallel to the ground, thus vacateed working space.After operation to be welded completes, again erect rotatable pile frame, make rotatable pile frame as the hoisting bracket dropped hammer.In addition, bracing members is set and reinforcement steel plate is strengthened first pile section pile strength, and be provided with buffer layer at the reinforcement surface of steel plate being positioned at annular hammering plate upper end, reduce first pile section because of the possibility even destroyed that deforms by hammer force, improve efficiency of construction and pile quality.This pile-sinking device structure is simply firm, effectively reduces construction cost, improves construction quality and efficiency of construction.The construction method of the steel pipe pile pile-sinking device of low clearance operation of the present invention, limiting plate is fixed on the ground first above pile sinking position; Secondly the first pile section of lifting, and make to stop sinking during the certain distance above ground level of first pile section stake top; Then lift the first standard knot, complete being welded to connect of the first standard knot and first pile section; Then start and drop hammer, make to drop hammer along the stake heart and do straight reciprocating motion hammering annular hammering plate, thus drive steel pipe pile to sink down into design attitude, and the rotatable pile frame that simultaneously fell; Then lift the second standard knot, and complete being welded and fixed of the second standard knot and the first standard knot; Then rotatable pile frame is turned to vertical position, make to drop hammer and aim at the stake heart of steel pipe pile, startup is dropped hammer to make to drop hammer along the stake heart and is done straight reciprocating motion hammering annular hammering plate, thus drives steel pipe pile to sink down into design attitude, and rotatable pile frame is turned to horizontal level; And repeat welded steel pipe standard knot section by section, and startup is dropped hammer, drive steel pipe pile sinks down into design attitude, thus completes the piling construction of whole steel pipe pile.This construction method reduces the requirement to upper clearance in steel pipe pile sinking construction process, can adapt to the piling construction of steel pipe pile under low-headroom condition, and easy and simple to handle, saves construction period and cost, has good promotional value.
Foregoing description is only the description to present pre-ferred embodiments, any restriction not to the scope of the invention, and any change that the those of ordinary skill in field of the present invention does according to above-mentioned disclosure, modification, all belong to the protection domain of claims.
Claims (9)
1. a steel pipe pile pile-sinking device for low clearance operation, described steel pipe pile is saved by some end to end and Steel tube standards communicated and forms, and it is characterized in that, described steel pipe pile pile-sinking device comprises:
Annular hammering plate, described annular hammering plate is arranged in first pile section;
Limiting plate, described limiting plate is fixedly installed on described steel pipe pile and treats on the ground of pile sinking position, and the middle part of described limiting plate is provided with one and saves with described Steel tube standard the through hole matched;
Be installed on the rotatable pile frame above described limiting plate, described rotatable pile frame is provided with motor rotor and power set;
Be hung on dropping hammer of being connected with described motor rotor on described rotatable pile frame and by cable wire, described in drop hammer and can move reciprocatingly along the stake heart of described steel pipe pile and annular hammering plate described in hammering.
2. the steel pipe pile pile-sinking device of low clearance operation as claimed in claim 1, it is characterized in that, described annular hammering plate is provided with bracing members along its radius, and described bracing members is fixedly connected with first pile section inwall.
3. the steel pipe pile pile-sinking device of low clearance operation as claimed in claim 1, it is characterized in that, described bracing members is 4, and 4 described bracing members are symmetrical arranged along described annular hammering plate circumference.
4. the steel pipe pile pile-sinking device of low clearance operation as claimed in claim 1, it is characterized in that, be also provided with reinforcement steel plate between described bracing members and first pile section inwall, the height of described reinforcement steel plate is greater than the height of described bracing members.
5. the steel pipe pile pile-sinking device of low clearance operation as claimed in claim 4, it is characterized in that, the outside being positioned at the described reinforcement steel plate above described bracing members is provided with buffer layer.
6. the steel pipe pile pile-sinking device of low clearance operation as claimed in claim 1, it is characterized in that, described annular hammering plate upper surface is laid with yielding rubber pad.
7. the steel pipe pile pile-sinking device of low clearance operation as claimed in claim 1, it is characterized in that, described limiting plate is provided with installing hole.
8. the construction method of the steel pipe pile pile-sinking device of the low clearance operation as described in any one of claim 1 to 7, is characterized in that, comprise the steps:
Step one, treat pile sinking position at described steel pipe pile ground on fix described limiting plate;
Step 2, lift described first pile section, described first pile section is sunk under the restriction of described through hole, and stops the sinking of described first pile section when the top certain distance above ground level of described first pile section;
Step 3, lift the first standard knot, make described first standard knot dock with described first pile section and be welded and fixed;
Step 4, install on described limiting plate described rotatable pile frame, lifting described in drop hammer, drop hammer described in making and aim at the stake heart of described steel pipe pile;
Step 5, start described power set, drop hammer described in making along the described stake heart and to move reciprocatingly annular hammering plate described in hammering, thus drive described steel pipe pile to sink down into design attitude, and described rotatable pile frame is regulated to make described rotatable pile frame parallel with described limiting plate;
Step 6, lift the second standard knot, make described second standard knot dock with described first standard knot and be welded and fixed;
Step 7, install on described limiting plate described rotatable pile frame, lifting described in drop hammer, drop hammer described in making and aim at the stake heart of described steel pipe pile; Start described power set, drop hammer described in making along the described stake heart and to move reciprocatingly annular hammering plate described in hammering, thus drive described steel pipe pile to sink down into design attitude, and regulate described rotatable pile frame to make described rotatable pile frame parallel with described limiting plate;
Step 8, repeating said steps six to described step 7, until complete the piling construction of whole described steel pipe pile.
9. the construction method of the steel pipe pile pile-sinking device of low clearance operation as claimed in claim 8, it is characterized in that, in described step 2, certain distance is 60cm ~ 80cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510422828.0A CN104975596A (en) | 2015-07-17 | 2015-07-17 | Steel pipe pile driving device for low-clearance work and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510422828.0A CN104975596A (en) | 2015-07-17 | 2015-07-17 | Steel pipe pile driving device for low-clearance work and construction method |
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| CN104975596A true CN104975596A (en) | 2015-10-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510422828.0A Pending CN104975596A (en) | 2015-07-17 | 2015-07-17 | Steel pipe pile driving device for low-clearance work and construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108385674A (en) * | 2018-04-08 | 2018-08-10 | 毕建宏 | High-bearing capacity thin-wall steel tube concrete pile construction method and device and its application |
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| JPH01190822A (en) * | 1988-01-27 | 1989-07-31 | Sumitomo Metal Ind Ltd | Head structure for steel pipe pile |
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| CN108385674A (en) * | 2018-04-08 | 2018-08-10 | 毕建宏 | High-bearing capacity thin-wall steel tube concrete pile construction method and device and its application |
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Application publication date: 20151014 |